BG51115A1 - Process for vacuum nitriding of high-speed steel - Google Patents

Process for vacuum nitriding of high-speed steel

Info

Publication number
BG51115A1
BG51115A1 BG9369491A BG9369491A BG51115A1 BG 51115 A1 BG51115 A1 BG 51115A1 BG 9369491 A BG9369491 A BG 9369491A BG 9369491 A BG9369491 A BG 9369491A BG 51115 A1 BG51115 A1 BG 51115A1
Authority
BG
Bulgaria
Prior art keywords
hardening
steel
nitriding
speed steel
carried out
Prior art date
Application number
BG9369491A
Inventor
Velika M Uzunova
Original Assignee
Univ Tekhnicheski
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 Univ Tekhnicheski filed Critical Univ Tekhnicheski
Priority to BG9369491A priority Critical patent/BG51115A1/en
Publication of BG51115A1 publication Critical patent/BG51115A1/en

Links

Landscapes

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

Abstract

The method is applicable in the machine manufacturing industry for thermochemical treatment of tools, made from high-speed steel. It prevents the formation of brittle nitride phases upon reduced process duration. It also increases the impact toughness and durability of the steel in operating conditions. The nitriding is carried out prior to hardening the steels at a temperature from 600 to 750 degrees C for 15 to 30 minutes and a pressure of ammonia of 9.3-16.0 x 10<3>Pa. Immediately after the nitriding, the heating process continues in the same furnace until the hardening temperature is reached, which is followed by triple tempering. If the vacuum furnace cannot provide enough heat for hardening, the steel is cooled slowly and the hardening and tempering processes are carried out in other facilities.
BG9369491A 1991-01-23 1991-01-23 Process for vacuum nitriding of high-speed steel BG51115A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BG9369491A BG51115A1 (en) 1991-01-23 1991-01-23 Process for vacuum nitriding of high-speed steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BG9369491A BG51115A1 (en) 1991-01-23 1991-01-23 Process for vacuum nitriding of high-speed steel

Publications (1)

Publication Number Publication Date
BG51115A1 true BG51115A1 (en) 1993-02-15

Family

ID=3923484

Family Applications (1)

Application Number Title Priority Date Filing Date
BG9369491A BG51115A1 (en) 1991-01-23 1991-01-23 Process for vacuum nitriding of high-speed steel

Country Status (1)

Country Link
BG (1) BG51115A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9212416B2 (en) 2009-08-07 2015-12-15 Swagelok Company Low temperature carburization under soft vacuum
US9617632B2 (en) 2012-01-20 2017-04-11 Swagelok Company Concurrent flow of activating gas in low temperature carburization

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9212416B2 (en) 2009-08-07 2015-12-15 Swagelok Company Low temperature carburization under soft vacuum
US10156006B2 (en) 2009-08-07 2018-12-18 Swagelok Company Low temperature carburization under soft vacuum
US10934611B2 (en) 2009-08-07 2021-03-02 Swagelok Company Low temperature carburization under soft vacuum
US9617632B2 (en) 2012-01-20 2017-04-11 Swagelok Company Concurrent flow of activating gas in low temperature carburization
US10246766B2 (en) 2012-01-20 2019-04-02 Swagelok Company Concurrent flow of activating gas in low temperature carburization
US11035032B2 (en) 2012-01-20 2021-06-15 Swagelok Company Concurrent flow of activating gas in low temperature carburization

Similar Documents

Publication Publication Date Title
ATE335859T1 (en) DEVICE AND METHOD FOR TRANSPORTING METAL WORKPIECES AND SYSTEM FOR THE HEAT TREATMENT OF THESE WORKPIECES
BG51115A1 (en) Process for vacuum nitriding of high-speed steel
DE50001540D1 (en) Process for nitriding and / or nitrocarburizing higher alloy steels
BR8902345A (en) PROCESS FOR THERMAL TREATMENT OF CORROSION RESISTANT STEEL BODIES
US7267732B2 (en) Method for manufacturing steel parts by continuous copper-brazing and quench hardening
ES2080416T3 (en) PROCEDURE FOR THE TREATMENT OF STEELS AND REFRACTORY METALS.
KR100240043B1 (en) Heat treatment of die material
RU2109081C1 (en) Method for manufacturing steel part
SU789606A1 (en) Method of thermal treatment of chrome-nickel austenite-martensite steels
Altena Universal Vacuum Hardening Plant Application and Results
Lasday Hardening Outer Sections of Steel
UA34291A (en) A process for the heat treatment of articles
SU1759907A1 (en) Method of treating high-speed steel tools
JPS55125227A (en) Toughening method of small steel member for case hardening
Trusova Defects resulted from chemical and heat treatments of chromium-nickel steel articles and methods of their elimination
Zhang et al. High Pressure Gas Quenching Vacuum Furnace and the Home Made Auxiliary Facilities
Yuan et al. Influence of Compound Treatment on Microstructures and Mechanical Properties of 3 Cr 2 W 8 V Steel.(Retroactive Coverage)
Lin et al. The development of new alloy steel CSC 3055 for hot forging
JPS6233754A (en) Gas carburizing heat treatment
Preisser et al. Vacuum carburizing with gas quenching as a case-hardening process
Loser et al. High-pressure gas quenching with helium and hydrogen for the hardening of low-alloy steels
Wang et al. The Combined Process of Nitriding and Hardening for Steel GCr 15
UA15277A (en) Method for hardening tool from rapid steels
Hong The analysis of heat treatment in carburizing
UA12943A (en) Method for heat treatment of tool of intermediate-alloy steels