Flame Hardening

Services



Heat Treatment Services


Heat Treatment Services :

Heat treating is an essential phenomenon that is very much needed to manipulate the physical, as well as sometimes the chemical properties of a metal. Heat Treatment of ferrous alloys, involves heating and quenching of the related material at extreme temperatures to get the desired result, such as the hardening and softening of the same material. The size and composition of these crystallites play a pivotal role in determining the overall behaviour of the related metals. The process of heat treatment is designed to manipulate these governing properties of the metal through controlling the rate of diffusion or cooling. Heat treatment is basically used for improving or restoring the manufacturability of a product. Some of the most common forms of heat treatment methods include annealing, hardening, precipitation, case hardening, selective hardening, ageing and stress relieving.
Size - 1000 Ø X 3000 mm Length


 

HSS (M2, M3, M4, M35, PM 23) HIGH SPEED STEEL HEAT TREATMENT :

High Speed Tool Steel has very high carbon and vanadium contents for for exceptional abrasion resistance. It is well suited for premium cutting tools of all types, particularly those used for machining abrasive alloys, castings, and heat-treated materials. The high carbon content of this grade allows it to be hardened in excess of 65HRC. However, the high hardness and high vanadium carbide content make it more difficult to grind after heat treatment Tungsten high-speed tool steels are primarily used for cutting tools such as broaches, chasers, cutters, drills, hobs, reamers, and taps.
All high-speed tool steels depend on the solution of various complex alloy carbides during austenitizing to develop both their heat-resisting qualities and cutting ability. These carbides do not dissolve to any appreciable extent unless the steel is heated to temperatures approaching the melting point of the steel.
Furnace Size - (600 Ø X 800 mm Length)


TOOL STEEL HEAT TREATMENT  :

Tool steels are important materials and cover a wide range of compositions from simple plastic molding die steels or water-hardening carbon steels to very highly alloyed high-speed steels. Even more exotic compositions can be achieved by the powder metallurgy route, Tool steels usually contain significantly more alloying elements than alloy steels. Approximately 70 types of tool steels are available in India. The reason for so many types of tool steels is evolutionary development over a period of many years and the wide range of needs that they serve. Tool steels have properties that permit their use as tools for cutting and shaping metals and other materials both hot and cold. The tool steels are grouped into seven major groups, and subdivided into subgroups.
They are Water - Hardening, Shock-resisting, Cold-work, Hot-work, High-speed, Mold, Special-purpose If we are to see the true microstructure of steels, such as tool steels, we must properly prepare them. We are instrumental in providing our clients with an extensive range of hardening Tool Steel The clients can avail this steel in round, flat and square shapes, at affordable prices. Our range is procured from reliable vendors, who use quality raw material and technologically advanced machines for manufacturing the products.
Size - 600 Ø X 3000 mm Length




Austempering Or Ausquenching


Austempering Ductile Iron- ADI(Austempered Ductile Iron)

AUSTEMPERING is the isothermal transformation of a ferrous alloy at a temperature below that of pearlite formation and above that of martensite formation. Austempering of steel and nodular cast iron offers several potential advantages:

Processes available with us :

Increased ductility, toughness, and strength at a given hardness.
Reduced distortion, which lessens subsequent machining time, stock removal, sorting, inspection,        and scrap.
The shortest overall time cycle to through-harden within the hardness range of 35 to 55 HRC, with    resulting savings in energy and capital investment.

ADI offers this superior combination of properties because it can be cast like any other member of the Ductile Iron family, thus offering all the production advantages of a conventional Ductile Iron casting. Subsequently it is subjected to the austempering process to produce mechanical properties that are superior to conventional ductile iron, cast and forged aluminum and many cast and forged steels.
The yield strength of ADI is over three times that of the best cast or forged aluminum. In addition ADI weighs only 2.4 times more than aluminum and is 2.3 times stiffer. ADI is also 10% less dense than steel. The mechanical properties of Ductile Iron and ADI are primarily determined by the metal matrix. The matrix in conventional Ductile Iron is a controlled mixture of pearlite and ferrite. (Tempered martensitic matrices may be developed for wear resistance, but lack the ductility of either as-cast Ductile Iron or ADI). The properties of ADI are due to its unique matrix of acicular ferrite and carbon stabilized austenite; called Ausferrite.


Martempering Or Marquenching:

MARTEMPERING also known as ‘marquenching’, this treatment uses an elevated temperature quench. Components are heated to the austenitizing temperature range and quenched, normally in molten salt at a temperature above the martensitic transformation start point (Ms). Components are held in the quenching medium for sufficient time until the temperature of the component is uniform and then air cooled through the martensite formation range.
This is effectively a harden and temper operation at the same time, keeping distortion to a minimum. Subsequent tempering is carried out to improve the materials toughness.
Advantages:
Results in properties which combine good wear resistance, high strength, ductility and toughness with minimum distortion.
Furnace Size - (600 Ø X 800 mm Length)



Nitriding Services


Liquid Nitriding Services (ALFANIT, Tufftriding, Sursulf, Ferritic Nitrocarburizing)

We are renowned as one of the main Liquid Nitriding Services to our respected customers at pocket friendly rates. With the assistance of our well-informed workers, we provide services that are in harmony with the clients requirements. In addition to this, we are providing these services in changed as well as modified forms.

Alfanit Nitriding (Liquid Nitriding ) for Wear Resistance on finished components:
Alfanit is a Liquid Nitriding or Nitrocarburizing and Surface Hardening process used on fully finished    components.
Alfanit improves the life of the Ferrous Components especially on Engineering Parts, Sothat the    warranty claims can be reduced.

Advantages :

Alfanit improves the resistance to Wear, Seizure, Galling, Fatigue, Corrosion on Steels, Stainless  Steels and Cast Iron Components.
Fully Finished Components can be treated by Alfanit process as it gives least distortion.
Components which require shallow case depth by Carburising, Carbonitriding etc. can be changed    to  Alfanit Process.
Costlier High Alloyed Steels can be replaced by Alfanit treated Mild Steel or Low Alloyed Steel.

Typical Application : Automobile, Textile, Hydraulics, Heavy Machineries, Railways Military, Mining, Machine Tools Plastic, Glass, Aluminium Extrusion, Wire Cutting & Drawing, Pump, Forging, Die Casting etc.
Size - 1000 Ø X 4000 mm Length


 


Gas Nitriding Services

Gas Nitriding process provides several advantages for the alloys treated, such as high surface hardness, wear resistance, anti-galling, good fatigue life, corrosion resistance and improved sag resistance at temperatures up to the nitriding temperatures. Gas nitriding is typically done using ammonia with or without dilution of the atmosphere with dissociated ammonia or nitrogen (or nitrogen/hydrogen) in the temperature range of 925-1050°F (500-565°C). Ammonia (NH3) is allowed to flow over the parts to be hardened.Due to the temperature and the catalytic effect of the steel surface, the ammonia dissociates into atomic nitrogen and hydrogen in accordance with equation 2NH3 → 2N + 6H.
Size - 800 Ø X 1800 mm Length


 


Nitrocarburising for Wear Resistance 

Nitrocarburizing is a variation of the nitriding process. It is a thermochemical diffusion process where nitrogen, carbon, and to a very small degree, oxygen atoms diffuse into the surface of the steel part, forming a compound layer at the surface, and a diffusion layer. Nitrocarburizing is a shallow case variation of the nitriding process. Advantages of the process include the ability to harden materials which are not prehardened, the relatively low temperature of the process which minimizes distortion, and relative low cost in comparison to carburizing or other case hardening processes. This process is done mainly to provide an anti-wear resistance on surface layer and to improve fatigue resistance.

Size - 800 Ø X 1800 mm Length



QPQ For Wear and Corrosion Resistance


QPQ, Arcor, Knitcor (For Wear & Corrosion Resistance on fully finished components)

QPQ Corrosion Resistance is also known as Quench Polish Quench, Arcor, Knitcor Introduction : Corrosion can be prevented by various methods. One of them is to convert the surface layer of the metal to form a layer of Oxides. The process of corrosion, by virtue of the chemical reaction by the Oxidants with activators, forms Oxides of the corresponding metal and ultimately the material is destroyed. Knitcor process gives excellent resistance against Wear & Corrosion, Scuff, Fatigue etc. on Ferrous components and Safeguard from the destruction of the components. We have talented wide acknowledgment as a notable organization of the business offering high-class.
To gratify the needs of our customers, our organization is engrossed in providing Quench Polish Quench (KNITCOR) For Wear and Corrosion Resistance. A team of dexterous personnel and competent professionals offer these services with the use of the most progressive technologies and up-to-date equipment. Furthermore, these services are provided on a particular frame of time as per the shared consent by us and our respected patrons.

Typical applications :
Knitcor (QPQ)process can be used in the following industries :

Total elimination of distortion – hence treatment on fully finished components.
Elimination of finishing processes like Painting, Electro Plating, Coatings etc. for better     Anticorrosion.
Excellent resistance against Wear, Corrosion, Fatigue, Scuff etc.

Typical applications :

  • Automobile
  • Material Handling
  • Civil Engineering
  • Hydraulic
  • Defence
  • Household Appliance
  • Marine

Some of the typical components are:

  • Switch Gear Components
  • Lock Parts
  • Carburetor Components
  • Shock Absorber Rods
  • Bearing Cages
  • Ejector Pins for Plastic Moulding Machines
  • Coupling Joints
  • Polaroid Camera Parts
  • Engine Valves
  • Gas Piston Rod
  • Hydraulic Jack Rods
  • Screws and Washers for Sliding Panels
  • Telescopic Cylinder for Excavator
  • Industrial Burner Parts

Size - 1000 Ø X 2000 mm Length

 



Carbonitriding Services


Gas Carbonitriding Liquid :

Gas carbonitriding is similar to carburizing, except that small additions of nitrogen are added to the atmosphere and the temperature is slightly lower. Consequently, the case depth and therefore, the load carrying capability is not as high as with carburizing, but the wear resistance and dimensional control are often superior.
Carbonitriding has the further advantage that it can be performed on unalloyed steels, so that it can be used for small stampings or other types of machined parts to make a strong, wear resistant part economically.
Size - 1500 Ø X 2800 mm Length


 


Liquid Carbonitriding :

Liquid carbonitriding is the process of diffusion enrichment of the surface layer of a part with carbon and nitrogen provided by a molten salt.The process is carried out at the temperatures 820-860°C
Carbonitriding is used primarily to impart a hard, wear-resistant case, generally from 0.075 to 0.75 mm deep. A carbonitrided case has better hardenability than a carburized case (nitrogen increases the hardenability of steel; it is also an austenite stabilizer, and high nitrogen levels can result in retained austenite, particularly in alloy steels).
Consequently, by carbonitriding and quenching, a hardened case can be produced at less expense within the case-depth range indicated, using either carbon or low-alloy steel. Full hardness with less distortion can be achieved with oil quenching, or, in some instances, even gas quenching, employing a protective atmosphere as the quenching medium.
Benefits of heat treatment in salt baths:

Fast heating. A work part immersed into a molten salt is heated by heat transferred by conduction (combined with convection) through the liquid media (salt bath). The heat transfer rate in a liquid media is much greater than that in  other heating mechanisms: radiation, convection through a gas (e.g, air).
Heat Treatment of Metals Like Hardening, Austempering, Carburising, Gas Nitriding, Liquid  Nitriding, Oxidising, Steaming, Hardening, Tempering, Stress Relieving, Annealing, Normalising, Precipitation    Hardening, Induction Hardening, Nitro carburising, Carbonitriding.
Controlled cooling conditions during quenching. In conventional quenching operation either water or    oil are used as the quenching media. High cooling rate provided by water/oil may cause cracks and    distortions. Cooling in molten salt is slower and stops at lower temperature.
Low surface oxidation and decarburization. The contact of the hot work part with the atmosphere is    minimized when the part is treated in the salt bath.

Size - 1500 ØX 2800 mm Length


 


Copper Heat Treatment Services :

We are a coveted organization that is engaged in offering Copper Heat Treatment Services to customers. Our professionals work in close proximity with customers to render these services as per their choices and preferences. Furthermore, our quality controllers stringently check the entire treatment process on different parameters to ensure about flawlessness.
Size- 1000 Ø X 3000 mm Length


 


Aluminum Heat Treatment Services :

We are engaged in undertaking Aluminum Heat Treatment Services for our clients. Heat Treatment of aluminum alloys, employed to increase strength and hardness of the precipitation-hardenable wrought and cast alloys by Solutionising and Precipitation Hardening. These usually are referred to as the "heat-treatable" alloys to distinguish them from those alloys in which no significant strengthening can be achieved by heating and cooling. The latter, generally referred to as "non-heat-treatable" alloys, depend primarily on cold work to increase strength. Heating to decrease strength and increase ductility (annealing) is used with alloys of both types; metallurgical reactions may vary with type of alloy and with degree of softening desired. Except for the low-temperature stabilization treatment. We use technologically advanced furnaces while executing this job work.
Size - 1000 Ø X 3000 mm Length


 


Hardening and Tempering :

Martensitic or quench hardening, neutral hardening is a heat treatment used to achieve high hardness / strength on steel. It consists of austenitising, quenching and tempering, in order to retain a tempered martensite or bainite structure.teel can be treated by intense heat to give it different properties of hardness and softness. This depends on the amount of carbon in the steel (only high carbon steel can be hardened and tempered). Tempering is a low temperature (150°C to 650°C) heat treatment intended to remove the stresses and brittleness caused by quenching and to develop the required mechanical properties.

GAS HARDENING & TEMPERING (800 Ø X 2000 mm Length)
LIQUID HARDENING & TEMPERING (1500 Ø X 3000 mm Length)


 


Gas Carburising (Surface Hardening) :

Gas Carburising Process is a surface hardening process, which improves the case depth hardness of a component by diffusing carbon into the surface layer to improve wear and fatigue resistance. The work pieces are pre-heated and then held for a period of time at an elevated temperature in the austenitic region of the specific alloy, typically between 820 and 940°C. During the thermal cycle the components are subject to an enriched carbon atmosphere such that nascent species of carbon can diffuse into the surface layers of the component.
Size- 1000 Ø X 3000 mm Length


 


Liquid Carburising Service :

Liquid Carburizing is essentially the addition of carbon at the surface of low carbon steels at appropriate temperatures.Case hardening is achieved with the quenching of the high carbon surface layer that has a good fatigue and wear resistance. This layer is applied on a tough low carbon steel nucleus. Case hardening of the carburized steels is mainly a function of carbon content. When steel carbon contents exceed a certain percentage, hardness is not affected by further carbon addition. Additional carbon at this stage is not dissolved. Steel case hardening depth of the carburized steel depends upon the carburizing time and the surface carbon intensity.When the carburizing time is prolonged to obtain increased case depths, excessive free carbides may be formed. The micro-structural elements have an unfavorable effect on the distribution of residual stresses. Carburized steels generally have base carbon contents of pproximately 0.2% while the carburized layer has carbon contents in the range of 0.8% and 1%. Most carburized steels are deoxidized by the addition of aluminum. Due to the carbon content difference in the core and the case, their case hardening capability is also different.
Size - 3.0 mm C.D (1500 Ø X 2800 mm Length)



Annealing


Solution Annealing, Isothermal, Spheroidised Annealing


Spheroidize Annealing :

Spheroidize annealing is beneficial when subsequent machining and/or hardening is required (since the microstructure consists of rounded cementite particles in a ferrite matrix). The spheroidized condition is the true equilibrium state of the steel and is its softest condition. The spheroidized microstructure also ossesses good cold-forming characteristics. Generally, the larger the spheroids and the more distance between them, the greater the ability of the steel to be cold formed. The importance of prior condition in spheroidize nnealing applies to all steels regardless of carbon content, and the presence of coarse pearlite is ndesirable because of resistance to spheroidization
Full Annealing - (Size - 1000 X 3000 mm)


 


Solution Annealing :

Solution Annealing of stainless steel is a process which takes the carbides that have precipitated in the grain boundaries and dissolves then into the surrounding matrix. The austenitic stainless steel castings are typically solution annealed at temperatures more than 1040º C and rapidly cooled to prevent a repeat of carbide precipitation in the grain boundaries. Some alloys due to their low carbon content do not need a solution anneal due to carbide formation, but benefit from a solution anneal to achieve maximum corrosion resistance.


 


Full Annealing Service :

A full anneal typically results in the second most ductile state a metal can assume for metal alloy. It creates a new uniform microstructure with good dynamic properties. To perform a full anneal on steel for example, steel is heated to 50°C above the austenic temperature and held for sufficient time to allow the material to fully form austenite or austenite-cementite grain structure. The material is then allowed to cool slowly so that the equilibrium microstructure is obtained. In some cases this means the material is allowed to air cool. In other cases the material is allowed to furnace cool. The details of the process depend on the type of metal and the precise alloy involved. In any case the result is a more ductile material but a lower yield strength and a lower tensile strength. This process is also called LP annealing for lamellar pearlite in the steel industry as opposed to a process anneal, which does not specify a microstructure and only has the goal of softening the material. Often the material to be machined is annealed, and then subject to further heat treatment to achieve the final desired properties.



Normalising service


Normalising :

NORMALISING is a heat-treating process that is often considered from both thermal and microstructural standpoints. In the thermal sense, normalizing is an austenitizing heating cycle followed by cooling in still or slightly agitated air. Typically, the work is heated to a temperature about 55 °C above the upper critical line of the iron - iron carbide phase diagram, that is, above Ac3 for hypoeutectoid steels and above Acm for hypereutectoid steels. To be properly classed as a normalizing treatment, the heating portion of the process must produce a homogeneous austenitic phase (face-centered cubic, or fcc, crystal structure) prior to cooling.
Size – 3000 X 3000 x 2000 mm



Stress Relieving Services


Stress Relieving  :

STRESS-RELIEVING process is used to relieve stresses that remain locked in a structure as a consequence of a manufacturing sequence. This definition separates stress-relief heat treating from postweld heat treating in that the goal of postweld heat treating is to provide, in addition to the relief of residual stresses, some preferred metallurgical structure or properties. For example, most ferritic weldments are given postweld heat treatment to improve the fracture toughness of the heat-affected zones . Moreover, austenitic and nonferrous alloys are frequently postweld heat treated to improve resistance to environmental damage.
Stress-relief heat treating is the uniform heating of a structure, or portion thereof, to a suitable temperature below the transformation range (Ac1 for ferritic steels), holding at this temperature for a predetermined period of time, followed by uniform cooling. Care must be taken to ensure uniform cooling, particularly when a component is composed of variable section sizes. If the rate of cooling is not constant and uniform, new residual stresses can result that are equal to or greater than those that the heat-treating process was intended to relieve.
Stress-relief heat treating can reduce distortion and high stresses from welding that can affect service performance. The presence of residual stresses can lead to stress-corrosion cracking (SCC) near welds and in regions of a component that has been cold strained during processing. Furthermore, cold strain per se can produce a reduction in creep strength at elevated temperatures.
Size – 3000 X 3000 x 2000 mm



Flame Hardening Service


Flame Hardening :

Flame hardening in its simplest form is the heating up of steel to its hardening temperature by a flame and then quenching in water or oil. The gas used for the heating is a mixture of oxygen and usually acetylene although occasionally propane is employed. The gases are mixed in a burner unit whose shape is dictated by the part to be flame hardened.
Size- 1000 Ø X 3000 mm Length


Phosphating


Zinc Phosphate Coating Services :

Zinc Phosphate Coating Services is applied when increased corrosion resistance is required. Zinc phosphate withstands 240 hours of neutral salt test.A wide range of coating weights may be obtained : from very thin fine crystal films to heavy deposits with weight up to 4 g/ft2 (40 g/m2).
The coating color is gray of different tins : from light to dark. Finer zinc phosphate crystals produce darker color. Dark gray color is also characteristic for the high carbon steel substrates.
Zinc phosphate coatings may be applied by using immersion or spray technique.
Light and medium weight zinc coatings do not require substrate surface activation. The substrate surface should be acid activated prior to heavy coating deposition. Zinc phosphate is used not only for non-coated Steels and cast irons but also for galvanized (zinc plated) steel parts.
Size - Phosphating Zn & Mn (2000 Ø X 3000 mm Length)h


 


Manganese Phosphating Services :

Manganese phosphating is applied when wear resistance and anti-galling properties are required. Manganese phosphate also possesses the ability to retain oil, which further improves anti-friction properties and imparts corrosion resistance to the coated parts.Magnesium phosphating typically have black color with a slight brown tint, intensity of which depends on the content of manganese oxide in the coating. Manganese phosphate is applied by immersion method. The substrate surface should be acid activated prior to coating. The coating weight is typically in the range 500-4000 mg/ft2 (5-40 g/m2). Because of their good anti-friction properties and corrosion resistance iron phosphate coatings are widely used for combustion engine parts (camshafts, piston rings, cylinder liners, gear parts), weapon mechanisms and other parts working with friction. Oil treatment is commonly employed as post treatment.
Size- 1000 Ø X 3000 mm Length


 


Iron Phosphating :

Iron phosphating is applied when strong adhesion of a subsequent painting is required. In contrast to the solutions for Zinc phosphate and Manganese phosphate coatings, in which the metal ions are a constituent of the composition, to the iron phosphate solution iron ions are provided by the dissolving substrate. Iron phosphate coatings have very fine Grain structure. Iron phosphate is translucent therefore its color depends on the steel surface quality. The common color is blue or bluish-brown.Iron phosphate is applied mostly by spray (threestage or five-stage) method but immersion technique is also used. The coating weight is typically in the range 20-100 mg/ft2 (0.2-1.0 g/m2).
Size- 2000mm  Ø X 3000mm Length



Blackodising


Blackodising Corrosion Resistance :

Blackodising Corrosion Resistance is a conversion coating formed by a chemical reaction produced when parts are immersed in the alkaline aqueous salt solution operated at approximately 135º C. The reaction between the iron of the ferrous alloy and the hot oxide bath produces a magnitite (Fe3 O4) on the actual surface of the part. It is possible to oxidize non-ferrous metals under suitable conditions to form black oxides. It is possible to apply black oxide at room temperature, however it is not possible to achieve all of the benefits available from the "hot" oxide process. The cold black oxide process routinely shows color variation from part to part and the black material frequently rubs off in your hands.
In order to determine the appropriate after-finish, it must be evaluated which after-finish to use. The following factors should be considered:In order to determine the appropriate after-finish, it must be evaluated which after-finish to use. The following factors should be considered:

Length of protection required
Desired finished appearance (gloss/matte)

Storage conditions (humidity, vapor, temperature)
Final application

Size - 2000mm Ø x 3000mm Length


Shrink Fitting


Cryogenic Shrink Fitting (Any Size) :

There are a huge number of industries and applications which benefit from shrink fitting or removal. In practice, the methodology employed can vary from a simple manual approach where an operator assembles or disassembles the parts to fully automatic pneumatic or hydraulic press arrangements.

Industries and applications:

Railway - gearboxes, wheels, transmissions
Machine tools - lathe gearboxes, mills

Steel works - roll bearings, roll neck rings
Power generation - various generator components

Cement Industries rollers
Rerolling mill rollers

Automotive starter rings onto flywheels
Timing gears to crankshafts

 Motor stators into motor bodies
Motor shafts into stators

Removal and re-fitting of a gas turbine impeller
Removal and re-fitting of hollow bolts in electrical generators

Assembly of high precision roller bearings
Shrinkfitting of 2-stroke crankshafts for ship engines


 


Thermal Shrink Fitting services :

We are dealing in Thermal Shrink Fitting services.


Solid Lubricant Coatings-MoS2 (Alfa Moly Coating)


Full Annealing Service :

Creating a distinct position for ourselves in the industry, we are involved in offering our supreme-class Molykote Coating. We ensure that the services offered by us are timely implemented, highly consistent and reliable. All the services presented by us are widely required in varied sectors. Adding to this, our workers are highly knowledgeable and can maintain proper communication with the patrons.


 


MOLYKOTE (Molybdenum Disulfide Coatings - MoS2 Coatings) :

Molykote is a dry film lubricant, commonly used in applications where load bearing capacity, operating temperature and coefficient of friction are primary concerns. This coating provides effective lubrication in a wide range of loads, in many cases exceeding 250,000 psi. Moly coatings lubricate sacrificially by transferring lubricant between the two mating surfaces, which helps to reduce wear and coefficient of friction. Alfamoly is a specially bonded organic lubricant coating which contains solid lubricants like molybdenum di sulphide etc. Like Molykote, Alfamoly has the properties of anticorrosive and solid lubricity.


 


Xylan Coatings Service :

Xylan coating is the largest, most complete line of fluoropolymer coatings in the worlds. Xylan coatings in which we also cover, TEFLON, PTFE coating have a broad range of properties, which make them ideal for an infinite variety of applications. Xylan/PTFE coating on Bolts, Studs & Nuts is an ideal protestion in corrosive environments, salt water condition & specially for splash zone. Xylan coatings differ from traditional fluoropolymer coatings in one very important aspect : they are composite materials. Lubricants with the lowest-known coefficient of friction are combined with the newest high-temperature-resistant organic polymers. Together, they from “Plastic alloys” with unique properties:Xylan Coatings are a family of fluoropolymer coatings designed for use on various types of OEM components and fasteners, including Xylan coated bolts to prevent corrosion. Xylan is known a heteropolymeric substrate consisting of a repeating β-1,4-linked xylose backbone branched with acetyl, arabinofuranosyl, and 4-O-methyl glucuronyl groups (Figure 1). In addition, xylan may be cross linked to lignin by aromatic esters. In order to efficiently depolymerize xylan to the component monosaccharides, a mixture of different enzymatic functionalities are required, including endo-1, 4-β-xylanases.

Properties of Xylan Coating :

Tensile Strength (ASTM D1708) : 4000 - 5000 psi
Elongation (ASTM D1457) : 50.00%

Impact Strength (ASTM D256) : 13 ft - lb/in
Hardness (ASTM D2240) : 60 - 90 HB (shore D)

Abrasion Resistance (Tabor) : > 15 mg
Coefficient of Friction (ASTM D1894) : .15 - .35 static

Dielectric Strength (ASTM D149) : 1400 volts per mil
Use Temperature : -100°F to 500°xF max

 Melting Point : n/a



Testing of Materials Metallurgical Services


METAL Testing Services :

Chemical Analysis
Corrosion Testing

Fatigue Testing and Fracture Toughness
Mechanical Testing

Metallography
Physical Testing


 


Failure Analysis of Mechanical,Welded,Electrical,Petro Chemical Components

ALFA HEAT TECH provides a complete reliable, high quality materials testing services committed to maintaining your precise specifications while meeting your scheduling requirements. We enjoy the range of prime garnered by our esteemed customers, which means you can rely on a wider range of testing services for metals and alloys.
Our satisfied clients have been and continue to be our largest source of new clients. Their referrals and continued patronage are the best indicators of our performance. We look forward to providing you with the same degree of performance, quality and customer service.
Examples of failure analysis are almost everywhere. Whether it is a minor maintenance failure or a disaster of national significance, anyone can learn from analysing mistakes. We check and analyse the following parameters

Mechanical properties
Microscopic product features

Flaws and defects Material composition
Corrosion susceptibility

Steel/alloy identification
Metallography

Fractography
Grain size measurement

Impurity inclusions
Casting defects identification

Secondary phase distribution and identification
Micro indentation hardness

Tensile, compression, and flexural strength
Corrosion testing

Coatings analysis
Failure analysis.



Furnaces for Heat Treatment


Heat Treatment Furnaces

Car bottom furnace:
Furnaces of this type have a movable bottom (car). The car goes out of the furnace and may be loaded or unloaded with treated parts. The heating method may be either electric resistance or fuel/gas. Car bottom furnaces are suitable for various heat treatment operations of large and heavy parts.
Bell type furnace:
Furnaces of this type have a movable vertically heating bell and a stationary bottom with the treated parts. The heating method may be either electric resistance or fuel/gas. Bell type furnaces are suitable for coiled strip annealing and other heat treatments including operations in controllable atmosphere.
Vertical pit furnace:
Furnaces of this type are used for heat treatment of shaft like parts which are loaded vertically through the top of the furnace. The heating method may be either electric resistance or furnace oil/ LDO /gas.

 



Continuous Furnaces

Belt furnace: 
Furnaces of this type have a mesh belt conveyor moving through a long tube like furnace. The heating method may be either electric (resistance or induction) or fuel/gas. Belt furnaces are suitable for heat treatment of relatively small parts.
Roller furnace: 
Furnaces of this type have heat resistant steel rollers moving the parts through a long tube like furnace. The heating method may be either electric or fuel/gas. Roller furnaces are suitable for heat treatment of sheets, tubes and other long parts.
Pusher furnace: 
Furnaces of this type are used for heat treatment of shaft like parts which are loaded vertically through the top of the furnace. The heating method may be either electric resistance or furnace oil/ LDO /gas.

 



Salts For Heat Treatment

Salt baths have many advantages over other heat treatment processes, viz Rapid rate of heat transfer in the salt bath gives higher output Uniform and accurate control of temperature can be available through out the bath and the components.
A)SALTS FOR CARBURISING
ALFA CARB –I
Salt for Carburising with Working Range 760°-950°C ( ICI Equivalent –`Rapicarb-H’ )
ALFA CARB –II
Salt for Carburising with Working Range 800°-950°C (ICI Equivalent - `Rapicarb-S’ )


B) NEUTRAL SALTS

Industries and applications:

ALFA 660 Working Range 660°C-900°C ( ICI Equivalent - `NC 660’ )
ALFA 660 is used for hardening various tool steels, preheating high-speed steels hot work

Steels prior to hardening with ALFA 970. ALFA 660 is denser than ALFA 720, but
less soluble in water. ALFA 660 does not ecarburize the charge. The working range

can be increased upto 1000°C by covering the molten salt with ALFA
ECONOMISER. (225 gm per 100 kg ).

ALFA 720 Working Range 720 – 900°C ( ICI Equivalent - WS 720 )
ALFA 720 is a salt which neither carburise nor ecarburize the steel and it readily dissolves in water.


C ) SALTS FOR QUENCHING AND TEMPERING

 ALFA 540 Working Range 540-700°C ( ICI Equivalent – QS 540 )
ALFA 540 can be used for minimum distortion and less risk of cracks than in oil quenching.

ALFA 495 Working Range 495 – 700°C ( ICI Equivalent – QS 495 )
ALFA 330 Working Range 330 – 535°C (ICI Equivalent - TS 330 )

ALFA 330 can be used for the heat treatment of ALUMINIUM ALLOYS. After solutionising in ALFA    330, the same can be precipitation hardened in ALFA 150.
10. ALFA ECONOMISER ( Refer above )
11. ALFA 220 Working Range 220 – 550°C (ICI Equivalent – TS 220 )
12. ALFA 150 Working Range 150 – 550°C (ICI Equivalent - TS 150 )