Heat Treatment / Metal Technology Co. Ltd.

Metal Technology Co. Ltd.

Heat Treatment

What is heat treatment?

Heat treatment is the process of changing the property of materials by heating and cooling in order to meet utility purpose.

MTC introduced vacuum heat treatment furnace in 1972, and became the forefront in the trade. Today we have a large number of equipment including the largest size of vacuum furnace in Japan. We have been handling ideal heat treatment considering the property of materials.

What is heat treatment?

Heat treatment overview

01. Heat treatment using vacuum furnaces

We provide various types of heat treatment such as solution treatment, precipitation hardening, stabilizing, hardening, quenching & tempering, annealing, stress relieving, sintering, diffusion treatment. In total we have over forty vacuum furnaces in operation spread throughout our plants.

Purpose
  • To improve wear resistance, corrosion resistance, mechanical properties, and physical properties.
Features
  • Due to non-oxidizing treatment, machining is not required after heat treatment.
  • Oxidation can be avoided during heat treatment by use of a multi-chamber vacuum furnace.
  • With our large scale vacuum furnace, we can heat treat large bulk items as well as mass produce a large quantity at one time (max 2,000 mm square).
  • Heat treatment minimizes deformation and distortion.
Single-chamber vacuum furnace

Single-chamber vacuum furnace
Φ2,000×3,500H mm

Two-chamber vacuum furnace

Two-chamber vacuum furnace
380W×610L×300H mm

Three-chamber vacuum furnace

Three-chamber vacuum furnace
1200W×2000L×900H mm

02. Heat treatment using atmosphere furnace

The examples of this are heat treatment, selective oxidation, nitriding, carburizing, sub-zero treatment, etc. for parts and raw materials. In total we have over forty atmosphere furnaces in operation spread throughout our plants.

Purpose
  • To improve mechanical and physical properties.
  • To induce hydrogen adsorption into parts and materials.
  • To induce surface modification by atmosphere gas.
Features
  • A choice of three gases can be utilized to optimize heat treatment: hydrogen, argon gas, or nitrogen gas.
Heat treatment using atmosphere furnace

Strengths of MTC’s heat treatment

01. High quality

  • Capable of processing parts with high specification requirements for industries such as aviation and nuclear power.
  • We have many years of experience which provides high level of equipment, temperature, and maintenance management, special process, and outstanding quality management system.
  • Acquired Nadcap (the National Aerospace and Defense Contractors Accreditation Program) certification for the Shiga, Suzhou, and Himeji plants.
  • Certified Heat Treatment Specialists:
    Grade 1: 7 people
    Grade 2: 98 people (August 31, 2016)

02. Experience / Achievement

  • We have over 55 years of heat treatment experience and have accumulated a large technical database available to all our plants.
  • We have extensive experience in the nuclear power, aerospace, aircraft, and electric appliance industries where a high level of quality management are essential and required.

Heat treatment samples

Airplane part
Stress relief heat treatment of Ti-6Al-4V
Airplane part
Stress relief heat treatment of
Ti-6Al-4V
Solution treatment / age hardening of airplane parts
Manifold tube
Solution treatment / age hardening of airplane parts
Solution treatment /age hardening of precision castings
Stationary blade
Solution treatment /age hardening of precision castings

Ensuring a quality service through strict management systems

Quality Management System
Quality Management System
We are constantly striving to improve our quality control system.
Compact electron beam irradiation device

Contact Us

+81-3-5365-3035

+81-3-5365-3055

Any request about products, and ask for quotation can be made here. Other questions and requests about the company can also be made here.

Document download

  • Company information
  • Technology information (Japanese)
  • Technology information (English)
  • HIP unit list
  • Possible material combinations for brazing
  • Capability List
  • FAA Capability List
  • AM overview slides
  • MICROTRON Test Machine MIC1
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