Flame Hardening Services

Flame Hardening Services Specification

Condition
New

Type
Flame Hardening

Usage
Industrial

Structure
Robust

Pressure
Medium Pressure

Style
Surface Hardening

Material
Steel

Application
Gear, Shaft, Rail Tracks, and Machinery Components

Max Workpiece Length
Up to 4 meters

Operating Temperature
900 - 1100°C

Feature
Improved Wear Resistance

Service Mode
Onsite/Offsite

Cooling Process
Spray/Quenching

Surface Finish
High Precision

Service Duration
Depends on Component Size and Requirement

Hardening Depth
Up to 6 mm

Standards
ISO Certified

About Flame Hardening Services

Basically, it is to leave the core of the part soft and harden the surface. It is applied to mild steels, alloy steels, cast iron parts and generally medium carbon steels. In flame hardening, the surface is heated by flame without any significant temperature change in the interior of the part. The surface of the part is austenitized and then subjected to quenching.

Any desired surface of the steel is heated with a flame to the appropriate temperature. When the austenitization is completed, the steel is quenched and the surface is hardened. In flame hardening, the heat is mostly provided by oxy-acetylene, it can also be provided with the help of other devices. During the heating phase of the part, various gases are assisted. Gases such as acetylene and air can be used most of the time, and in some cases propane.

With the appropriate mechanisms that can be used, the part is easily heated and then cooled quickly. The hardening depth is adjusted by controlling the values such as flame intensity, heating time, rotational-advance movement speed. There are 4 different methods when applying flame hardening; There are different methods such as moving, forward moving, rotary motion and rotary-progressive motion. When applying flame hardening, it is most important that the person doing the work in manual mechanisms is highly skilled and beyond that, experienced. If excessive heating is applied to the part, both grain growth and cracks and distortions are seen after quenching. This is the biggest possible disadvantage of flame hardening.

In flame hardening, quenching at the end of heating is generally applied by spraying, valid for 4 different methods.
The duration of the flame hardening heat treatment is shorter compared to cementation and nitriding. Flame hardening, which is more suitable for cementation and nitration in terms of cost, is more ergonomic than other heat treatments. The devices used are portable and can be adjusted according to the environment and condition. Another important advantage of flame hardening is that it does not cause scale formation. Scale does not occur, besides, undesirable situations such as cracks, tensile stress or warping do not occur in the steel.

Precision Hardening for Industrial Strength

Our advanced flame hardening techniques improve the surface durability of steel components, supporting heavy-duty industrial needs. Using skilled application methods, we achieve high precision finishes and custom hardening depths, tailored for your specific machinery parts.

Flexible Service Modes Onsite & Offsite

To accommodate varying operational requirements, our flame hardening services are available both at your facility (onsite) or at ours (offsite). Our expert technicians ensure consistent quality and reliability, regardless of service location.

Certified Quality and Robust Construction

We adhere to stringent ISO standards, ensuring each project meets rigorous specifications for strength and safety. Our process is suited for medium pressure applications and supports long workpieces, making us a preferred partner for heavy industry in India.

FAQ's of Flame Hardening Services:

Q: How does flame hardening benefit industrial components like gears and shafts?

A: Flame hardening significantly improves the wear resistance and longevity of industrial parts by creating a hardened surface layer, particularly effective for gears, shafts, rail tracks, and machinery components subjected to continuous stress and friction.

Q: What is the typical process for flame hardening, and what cooling methods are used?

A: The process begins by heating the steel component's surface to 900-1100C with a flame source, followed by rapid cooling using spray or quenching. This creates a hardened layer (up to 6 mm deep) while retaining the core's toughness.

Q: When is onsite versus offsite flame hardening recommended?

A: Onsite hardening is ideal when transporting large or delicate equipment is impractical, while offsite services suit components that can easily be brought to our facility. Both options deliver equal quality and precision.

Q: Where are these flame hardening services available?

A: We provide flame hardening across India, catering to a range of industries requiring hardened gears, shafts, rail tracks, and machinery components. Services are available both at your site or at our state-of-the-art facility.

Q: What materials and sizes can be handled with this service?

A: Our process specializes in steel components and accommodates workpieces up to 4 meters in length. The robust setup is tailored for medium pressure, industrial-style surface hardening applications.

Q: What are the certified standards and quality measures for these services?

A: Our flame hardening solutions comply with ISO certification and are rigorously monitored for consistent surface finish, depth control, and material integrity, ensuring every treated part meets safety and performance requirements.