Evolve Heat Tech LLP

Saraswati Industrial Complex, Howrah

In carburizing, carbon is diffused on the surface of the low carbon steel at high temperatures for a prolonged period followed by fast quenching to produce a hard case with a tough core. Commonly used in production of gears, bearings, pinions, transmission parts, etc. that require high wear resistance.

We perform Gas Carburizing in an atmospheric controlled Sealed quench Furnace fully controlled using SCADA system.

Facility to carburize upto 2 MM case depth on materials of different sizes and geometry with minimum distortion.

We do carburizing on alloys steels like SAE 8620, 16MnCr5, 20MnCr5, EN 353, SCM 415 etc.

Selective Carburizing: We perform Selective Carburizing by using Anti-Carb paste.

Hardening involves heating the steel to a high temperature followed by rapid quenching to increase its hardness and make it more wear-resistant.

Tempering involves re-heating the hardened steel to a lower temperature to reduce its brittleness and increase its toughness by relieving internal stresses while still retaining its desired hardness.

We perform Hardening in a Sealed Quench Furnace with an atmospheric protective environment which avoids scaling and decarburisation. The process is fully controlled by Scada System.

We have ability and facility to do through hardening of various carbon, alloy and tool steels with varying section thickness. Carbon steels like SAE 1030, SAE 1045, SAE 1050, SAE 1060, EN 8, EN 9, C45, C50, C40, etc. Alloy steels like SAE 4140, SAE 4340, SAE 52100, EN 18, EN 19, EN 24, 10B35, 15B25,etc. and various Tool Steels like S1, D2, D3,etc.

Annealing involves heating steel to a temperature usually above its recrystallization temperature, holding for a specific period of time and then cooling it slowly inside the furnace (furnace cooled) to relieve internal stresses, improve ductility, machinability, toughness, and reduce hardness.

Normalizing is a heat treatment process that involves heating steel above its critical temperature and then cooling it in still air to refine grain structure, improve strength and toughness.

Stress relieving is a lower-temperature process that reduces residual stress from fabrication, welding, cutting, cold-working without significantly altering material properties by slow cooling below critical temperature. The primary effect is the reduction of internal stresses, which improves dimensional stability and prevents distortion or cracking during further processing.