A-trac manufactures Cylinder Liners in gray cast iron using Centrifugal Casting. Special chemical compositions are also used to ensure corrosion resistance properties and enhanced lubrication. Centrifugal Casting Process is known to be the best method for manufacturing Cylinder Liners. In centrifugal casting, a permanent mould is rotated continuously about its axis at high speeds as the molten metal is poured. The centrifugal force causes the metal to distribute itself evenly around the die. The resulting casting is a fine-grained casting with a very fine-grained outer diameter, owing to chilling against the mould surface. Impurities and inclusions float to the surface of the inside diameter, which can be machined away.

Air Cooled Cylinder Liners are made from special “Shell Moulding Process” having wear resisting close grained iron casting to ensure long life and efficient cooling.

Product Range

Air Cooled

Water Cooled

Dry Type

Production Capacity
1.2 million pieces per annum

Size Range (In mm): Bore Diameter - 46.00 to 222.25

Total Length: 150.00 to 330

Finishes: Semi-finished & Fully-finished

Chemical Composition

Name. Chromium

Minimum: 0.25

Maximum: 0.50

Name. Carbon                

Minimum: 3.00

Maximum: 3.50

Name. Silicon                  

Minimum: 2.00

Maximum: 2.50

Name. Manganese

Minimum: 0.50

Maximum: 0.80

Name. Phosporus

Minimum: 0.30

Maximum: 0.50

Name. Sulphur

Max. 0.05

* custom

Other than above, we can cast material compositions using Chromium, Molybdenum, Nickel, Copper, Boron or as per customer specifications meeting to international standards

Micro Structure

Predominant distribution A, permitted B and D Size 4~6

Pearlite (Max 2% ferrite)

Dispersed network of steadite

Carbides Max. 1%

Hardness (BHN): 209 to 240

Tensile: 210 to 275 n/mm2

A-trac has pioneered the design, development and manufacturing of cost-effective, high-performance Engine Valves for various applications. We have the capacity and capability to develop and supply high-performance Engine Valves as per your requirements in accordance to the chemical and metallurgical specifications specified by you.

Intake and exhaust valves used in internal combustion engine are made from different materials to operate under different conditions. Inlet Engine Valves are made from Chrome Silicon Alloy Steel and Exhaust Engine Valves are made from Chrome Nickel Silicon Alloy Steel (to operate under high temperature and high stress conditions). Engine Valves are also supplied with Liquid Nitriding Process or Hard Chrome Plating which increases the surface hardening of the stem. With every valve design we strive to maximize durability through higher fatigue resistance and tensile strength.

Production Capacity

3.6 million pieces per annum

Material

21/4 N, BI-METAL, EN18D, EN-24, EN-52

Hardness (HRC)

21/4 N

48 to 53

BI-METAL, EN18D, EN-24, EN-52

54 to 57

Engine Valve Types

Mono-Metal Valves

Bi-Metal Valves

Seat Stellite

Tip & Seat Induction Hardening

Chrome Plated

With Scrapper

Stainless Steels with or without Tufftriding

Hard Chrome/Nitrided Stem

Profile & Through Hardened Grooves

Shrouded

Reduced Stem

Size Range (In mm)

Valve Stem Diameter: 4.45 to 19.00

Valve Head Diameter: 15.20 to 87.20

Valve Length: 61 to 276.50

Arrow Pistons are manufactured using high strength alloys and employing advanced manufacturing techniques to provide flawless quality which is entirely significant to boost the performance of an engine. The high conductivity of these materials promotes cool running and optimum performance and the light but robust design ensures efficient operation over extended periods of time. Resistance to wear ring grooves, skins and gudgeon pin hole is greatly increased to ensure dimensional stability in service. All alloy piston castings are correctly heat treated and aged for maximum strength and durability.

Being a leading manufacturer and exporter of Pistons in India, we specialize in manufacturing these pistons in custom designs and dimensions to meet the specifications and demands of our customers across the World. All our Pistons are made with strict adherence to international standards and can be used as OEM replacements across a wide range of vehicles.

TYPES:

Alfin Type

Steel Strip Type

Cooling Gallery

Normal Piston

Production Capacity: 0.6 million pieces per annum

Material: Aluminium

Hardness (HRB): 70

Chemical Composition

Name: Copper (Cu)  

Minimum: 1.00

Maximum: 1.50

Name: Magnesium (Mg) 

Minimum: 1.00

Maximum: 1.50

Name: Silicon (Si)    

Minimum: 12.00

Maximum: 14.00

Name: Manganese (Mn)

Max: 0.20

Aluminium (Al)   

Other than above, we can offer material compositions using Iron, Nickel, Zink, Lead, Tin, Titanium or as per customer specifications meeting to international standards

Piston rings are individually cast and close material control ensures high tensile strength, resistance to wear and scuffing and to collapse at operating temperatures. Each Ring is double turned, barrel honed and ground to maximum accuracy for smoother performance and low fuel consumption.

Valve Guides are made from two kinds of materials

• Grey Cast Iron
• CuZnAI-alloy

GREY CAST IRON of perlitic structure with high phosphorous content. The perlitic structure and the reticular phosphide distribution along with the good graphite formation give high wear resistance and improved running properties in poor lubrication condition.

CuZnAI- alloy guides have excellent wear resistance and low coefficient of friction. Used for highest stressed guides. All our Cast Iron Guides are manufactured having minimum hardness of 95 HRB (210 BHN).