Gas carburizing

The mechanical property of steel depends on the amount of carbon content. Carbonization is a heat treatment method to penetrate and diffuse carbon on the material surface by heating the low carbonization material in a gas. (it’s literally ‘carbonization’.)
Then, apply hardening after carbonization to harden the surface and the central part will become extremely tough. This is applied for a lot of parts like gears and shafts that are required to have strength and abrasion resistance.

Metallographic structure and treatment condition

Ferrite + perlite
before treatment

Martensite high hardness,
wear resistance
after treatment

Gas Carbonitriding quenching

Generally, carbonization treatment is done at high temperature at approximately 930°. For that reason, deformation caused by hardening can be big. Carbonitriding can make the carbonization treatment possible at the low temperature of about 800° by mixing a little amount of nitrogen gas in the carbonization gas and penetrating and diffusing the carbon and nitrogen on the surface of the material. In addition to that, it is also applicable for those lower consistency steels with less amount of alloy content by using the nitrogen effect on the surface.

Metallographic structure and treatment condition

Ferrite + perlite
before treatment

Martensite high hardness,
wear resistance
after treatment

 

Equipment

Batch type gas carbonization furnace
Batch type gas carbonization furnace
Pit type gas carbonization furnace
Pit type carburizing furnace
 

The factroy is able to do

Kaita Factory
Kaita Factory

9-9 Tsukimi-machi, Kaita-cho, Aki-gun,
Hiroshima-ken, 736-0034, Japan
Tel. +81-(0)82-822-2957
Fax. +81-(0)82-822-7294
Shiwa Factory
Shiwa Factory

190-1 Aza Fukasako, Kanmuri, Shiwa-cho,
Higashi-Hiroshima-shi, 739-0265, Japan
Tel. +81-(0)82-420-5511
Fax. +81-(0)82-420-5615
Tokai Factory
Tokai Factory

138 Kasuga, Takaoka-Shinmachi,
Toyota-shi, Aichi-ken, 473-0921, Japan
Tel. +81-(0)565-52-3631
Fax. +81-(0)565-53-4611
Kariya Factory
Kariya Factory

46-1 Shimonagare, Ichiriyama-cho,
Kariya-shi, Aichi-ken, 448-0002, Japan
Tel. +81-(0)566-35-0361
Fax. +81-(0)566-35-0362
Hofu Factory
Hofu Factory

26-1 Shintukiji-cho, Hofu-shi,
Yamaguchi-ken, 747-0824, Japan
Tel. +81-(0)835-25-3737
Fax. +81-(0)835-25-8626
 
 

Contact Us

Nagato Heat Treatment (Thailand) Co., Ltd.
7 /379 Moo 6, Tambol Mabyangporn, Amphur Pluakdaeng, Rayong, Thailand
Tel. +66-(0)38-027-473  Fax. +66-(0)38-027-475