JPS558442A - High speed tool steel - Google Patents

High speed tool steel

Info

Publication number
JPS558442A
JPS558442A JP8052478A JP8052478A JPS558442A JP S558442 A JPS558442 A JP S558442A JP 8052478 A JP8052478 A JP 8052478A JP 8052478 A JP8052478 A JP 8052478A JP S558442 A JPS558442 A JP S558442A
Authority
JP
Japan
Prior art keywords
high speed
speed tool
steel
tool steel
ratio
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP8052478A
Other languages
Japanese (ja)
Inventor
Kiyokazu Tsujifuchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nachi Fujikoshi Corp
Original Assignee
Nachi Fujikoshi Corp
Fujikoshi KK
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 Nachi Fujikoshi Corp, Fujikoshi KK filed Critical Nachi Fujikoshi Corp
Priority to JP8052478A priority Critical patent/JPS558442A/en
Publication of JPS558442A publication Critical patent/JPS558442A/en
Pending legal-status Critical Current

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  • Heat Treatment Of Steel (AREA)

Abstract

PURPOSE: To improve wear resistance, toughness, and machinability of high C-high speed tool steel, by decreasing V content and specifying simultaneously the ratio V/ (W+2Mo).
CONSTITUTION: The steel comprises, by weight, 0.8W1.2 % C, 0.1W0.6 % Si, 0.1W 0.6 % Mn, 3.0W5.0 % Cr, 1.0W3.0 % W, 7.0W10.0 % Mo, 2.2W2.8 % V, 4.0W 6.0 % Co, 0.01W0.10 % Zr, the balance being Fe and impurities, having a ratio by weight 0.15 ≥ V/(W+2Mo) ≥ 0.10. The high speed tool steel is easily melted and refined by a method used for other high speed tool steels, and is hot worked, i.e., forged, rolled in the same way as other high speed tool steels. The steel is softened by, after working, heat-treatment at 800W900°C and gradual cooling, and is hardened to HRC 63W68 by oil hardening at 1,160W1,250°C, then by tempering at 520W580°C.
COPYRIGHT: (C)1980,JPO&Japio
JP8052478A 1978-07-04 1978-07-04 High speed tool steel Pending JPS558442A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8052478A JPS558442A (en) 1978-07-04 1978-07-04 High speed tool steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8052478A JPS558442A (en) 1978-07-04 1978-07-04 High speed tool steel

Publications (1)

Publication Number Publication Date
JPS558442A true JPS558442A (en) 1980-01-22

Family

ID=13720696

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8052478A Pending JPS558442A (en) 1978-07-04 1978-07-04 High speed tool steel

Country Status (1)

Country Link
JP (1) JPS558442A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0219455A (en) * 1988-07-05 1990-01-23 Mitsubishi Electric Corp Thin film forming device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52120217A (en) * 1976-04-02 1977-10-08 Daido Steel Co Ltd Modification of carbide in the mo high speed tool steel containing co

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52120217A (en) * 1976-04-02 1977-10-08 Daido Steel Co Ltd Modification of carbide in the mo high speed tool steel containing co

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0219455A (en) * 1988-07-05 1990-01-23 Mitsubishi Electric Corp Thin film forming device

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