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Tohoku Steel Co., Ltd.
AND OR

Precision Processed Products

We minimize costs with our integrated manufacturing system, from materials, to forging, cutting, and heat treatment.

  • Our material processing and development technologies are based on special steel expertise.
  • We can reduce total cost by implementing NNS (near net shape) via cold-/warm-forging of materials that are said difficult to be forged in general.
  • High-quality, high-precision processing technology for automobile parts and semiconductor manufacturing equipment parts.
  • We also deal in composite processed using a special production methods.
  • Our quality assurance system is certified with ISO9001.

Flow from material development to maching process

素材開発~機械加工までのフロー

1. Cold-/warm-forged NNS products

Material Method Features Applied Product Example Usage
DSUSXM7
Soft magnetic materials
Cold die steel
After NNS forging with 400t and 600t transfer presses, vacuum and controlled atmosphere heat treatment are performed. Near net shaping is performed via cold/warm multistage pressing to lower total cost.
Product
Fuel injection parts
High-pressure pump parts
EPS parts

Product Examples

2. Cold-forging & machining

Material Method Features Applied Product Example Usage
DSUSXM7
Soft magnetic materials
Cold dies steel
Machining is performed with the method mentioned above plus CNC lathe etc. Near net shaping with multistage pressing is performed along with heat treatment and cutting to maximize the material's special properties.
Product
Fuel injection parts
High-pressure pump parts
EPS parts

Product Example1

Product Example1

3. Machined products

Material Method Features Applied Product Example Usage
High Ni type SUS
Co type heat-resistant alloy
Ni, Ti alloys
After rough processing of round, square or profile materials, vacuum heat treatment is performed, and the important parts are precision finished. Cutting process of materials that are difficult to cut
- Cutting of high-hardness materials (HRC40 to 52)
- Cutting of low-expansion materials
- Cutting of round bar made of low-expansion materials, and cutting of pipe materials can be done.
Product
Ultrasonic motor parts
Protective cover parts
Sensor parts
Optical Denso parts
SUS316L
SUS316L clean material
Cutting of high cleanliness material (stainless steel with a low level of inclusions or impurities) with high complexity and precision requirements
- High-hardness cutting via special plastic forming
- Mirror-like finishing of portions that contact with gas or liquid (Surface roughness is 0.7S or lower.)
Product
Semiconductor production
Device parts
Valve parts for medical devices

4. Processed composite products

Material Method Features Applied Product Example Usage
NiPermalloy
High saturated magnetic flux density material
Electromagnetic stainless steel
Closed die forged products and plate materials are used, which are punched, bent, and etched after vacuum heat treatment, and special processing is performed, such as laminating or welding. Our special processing technology is used for processed composite products
- Plate press forming
- Etching
- Laminating
Product
Electromagnetic valve parts
Linear guides
Electromagnetic motor cores
Resolver cores

Queries / orders

Contact information regarding precision processed products
Tokyo Office Phone: +81-3-3270-1851 Fax: +81-3-5255-6775
Nagoya Office Phone: +81-52-221-9381 Fax: +81-52-219-1681
Osaka Office Phone: +81-6-6202-5465 Fax: +81-6-6233-2307
Sendai Office Phone: +81-22-248-3151 Fax: +81-22-304-1021
Click here to contact us via email

Equipment List



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