TW200730641A - Nitriding and quenching product and preparation thereof - Google Patents

Nitriding and quenching product and preparation thereof

Info

Publication number
TW200730641A
TW200730641A TW095105096A TW95105096A TW200730641A TW 200730641 A TW200730641 A TW 200730641A TW 095105096 A TW095105096 A TW 095105096A TW 95105096 A TW95105096 A TW 95105096A TW 200730641 A TW200730641 A TW 200730641A
Authority
TW
Taiwan
Prior art keywords
furnace
nitrogen
kept
flow rate
taken out
Prior art date
Application number
TW095105096A
Other languages
Chinese (zh)
Other versions
TWI360579B (en
Inventor
Kojiro Inaba
Tadao Inaba
Original Assignee
Yuki Koshuha Kabushiki Kaisha
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yuki Koshuha Kabushiki Kaisha filed Critical Yuki Koshuha Kabushiki Kaisha
Priority to TW095105096A priority Critical patent/TW200730641A/en
Publication of TW200730641A publication Critical patent/TW200730641A/en
Application granted granted Critical
Publication of TWI360579B publication Critical patent/TWI360579B/zh

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  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Abstract

The object of the present invention is to prevent iron or iron alloy from producing compound layer and perform nitrogen infiltration treatment in a shorter time to achieve the expected depth of nitrogen diffusion layer, and subsequent quenching treatment to acquire the hardened layer with sufficiently high hardness. The solution of the present invention is to place the processed SPCC material inside the furnace with a capacity of 4 cm3. The furnace is evacuated to 100 Pa and nitrogen is introduced to a pressure of 1 atmospheric pressure. The temperature of the furnace is kept at 720 DEG C and ammonia gas in a flow rate of 4 l/min and nitrogen gas in a flow rate of 1 m3/h are introduced continuously into the furnace while the exhausted gases are discharged continuously from the exhausting outlet. The process articles are kept at such a condition for 20 minutes and then taken out from the furnace and thrown immediately into an oil cooling device adjusted at 80 DEG C. The processed articles are taken out when their temperature reaches below 150 DEG C, and further cooled to room temperature.
TW095105096A 2006-02-15 2006-02-15 Nitriding and quenching product and preparation thereof TW200730641A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW095105096A TW200730641A (en) 2006-02-15 2006-02-15 Nitriding and quenching product and preparation thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW095105096A TW200730641A (en) 2006-02-15 2006-02-15 Nitriding and quenching product and preparation thereof

Publications (2)

Publication Number Publication Date
TW200730641A true TW200730641A (en) 2007-08-16
TWI360579B TWI360579B (en) 2012-03-21

Family

ID=46728230

Family Applications (1)

Application Number Title Priority Date Filing Date
TW095105096A TW200730641A (en) 2006-02-15 2006-02-15 Nitriding and quenching product and preparation thereof

Country Status (1)

Country Link
TW (1) TW200730641A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI399441B (en) * 2007-10-24 2013-06-21 Nippon Steel & Sumitomo Metal Corp Induction hardening steel component or parts with pre-carbonitriding treatment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI399441B (en) * 2007-10-24 2013-06-21 Nippon Steel & Sumitomo Metal Corp Induction hardening steel component or parts with pre-carbonitriding treatment

Also Published As

Publication number Publication date
TWI360579B (en) 2012-03-21

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MM4A Annulment or lapse of patent due to non-payment of fees