Addresses
Factory Address
K-13, New # 64, 8Th Street, Ambattur Industrial Estate, Chennai -600 058.
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Service Overview

Heat treatment is a controlled thermal process used to alter the physical and mechanical properties of metal components — improving their strength, hardness, wear resistance, and overall performance. At R.K. Industries, heat treatment is an integral part of our value-added services, especially for cold forged or machined parts that require enhanced durability. By offering multiple heat treatment methods in-house, we provide precise, reliable, and repeatable metallurgical enhancements for critical applications across industries.

Our Capabilities

We operate a dedicated heat treatment setup designed to meet diverse strength, hardness, and metallurgical property requirements. Capabilities include:

Pit Furnaces (2 Units, 1-Ton Capacity) – Used for annealing and other thermal cycles
Annealing – Softens the metal for machining or stress relief
Induction Hardening – Selective surface hardening for high-wear areas
Case Hardening – Enhances surface durability while maintaining a tough core
Normalising – Refines grain structure and restores uniformity after forging
Integration with Forging & Machining Lines – Efficient batch processing for seamless transitions
Process Monitoring & Sample Validation – Backed by metallurgical testing

This in-house thermal capability reduces turnaround times and gives customers better control over part performance.

Process Flow

01

Material Analysis & Hardness Goal Setting

Define mechanical properties needed

02

Process Selection

Choose between annealing, hardening, or normalising

03

Temperature & Soak Control

Components heated using defined time-temp cycles

04

Cooling Strategy

Parts cooled using air, oil, or water based on the process

05

Hardness Testing

Post-treatment parts tested using Rockwell or Vickers systems

06

Metallurgical Review

Microstructure and grain validation as needed

Applications / Industries Served

Heat treatment enhances component performance where mechanical loads, friction, or wear are involved. We treat parts such as:

  • Typical Components: Shafts, gears, collars, hubs, spacers, flanges
  • Industries Served:
    • Automotive (Powertrain, Steering, Suspension)
    • Agricultural Machinery (Gear Trains, Transmission Parts)
    • Industrial Equipment (Rotating Components, Fasteners)
    • General Engineering (Pins, Sleeves, Wear Plates)

Whether to harden a gear tooth or soften a forged blank, our heat treatment ensures the part is ready for its application.

Quality & Inspection

Our heat treatment processes are closely monitored and validated using both mechanical and metallurgical inspection tools:

Hardness Testing: Digital Rockwell and Vickers testers
Sample Cutting & Microstructure Analysis: Metallurgical microscope with image analysis
Grain Flow & Case Depth Checks for case-hardened or induction-hardened parts
Batch Traceability: Every heat-treated lot is documented and tagged
Process Validation: Soak times, temperature logs, and cooling cycles recorded
Compliance with ISO 9001 and IATF Standards

This robust quality framework ensures our thermal processes consistently meet part performance requirements.

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