JPH04263042A - Steel for molding die having high hardness and its manufacture - Google Patents

Steel for molding die having high hardness and its manufacture

Info

Publication number
JPH04263042A
JPH04263042A JP4277091A JP4277091A JPH04263042A JP H04263042 A JPH04263042 A JP H04263042A JP 4277091 A JP4277091 A JP 4277091A JP 4277091 A JP4277091 A JP 4277091A JP H04263042 A JPH04263042 A JP H04263042A
Authority
JP
Japan
Prior art keywords
steel
hardness
manufacture
molding die
executing
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
JP4277091A
Other languages
Japanese (ja)
Inventor
Kazuaki Matsumoto
Tetsuya Sanpei
Nakatsugu Abe
Toshio Matsuoka
Kazunori Yako
Original Assignee
Nkk Corp
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 Nkk Corp filed Critical Nkk Corp
Priority to JP4277091A priority Critical patent/JPH04263042A/en
Publication of JPH04263042A publication Critical patent/JPH04263042A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain a steel having high hardness of ≥43 points in HRC value and useful as a steel for a die for plastic molding.
CONSTITUTION: This is a steel for a forming die having high hardness which is constituted of, by weight, 0.05 to 0.20% C, 0.10 to 1.0% Si, 0.8 to 2.0% Mn, 2.5 to 3.5% Ni, 0.5 to 1.5% Al, 0.7 to 1.7% Cu, 0.1 to 0.5% Mo and the balance Fe with inevitable impurities and obtained at the time of heating it and thereafter executing a hot working by finishing the working at ≥700°C, thereafter immediately cooling it to ≤400°C at the cooling rate of that of air cooling or above to ≤50°C/sec, and furthermore, executing an aging treatment at 450 to 525°C for 1 to 100hr.
COPYRIGHT: (C)1992,JPO&Japio
JP4277091A 1991-02-15 1991-02-15 Steel for molding die having high hardness and its manufacture Pending JPH04263042A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4277091A JPH04263042A (en) 1991-02-15 1991-02-15 Steel for molding die having high hardness and its manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4277091A JPH04263042A (en) 1991-02-15 1991-02-15 Steel for molding die having high hardness and its manufacture

Publications (1)

Publication Number Publication Date
JPH04263042A true JPH04263042A (en) 1992-09-18

Family

ID=12645208

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4277091A Pending JPH04263042A (en) 1991-02-15 1991-02-15 Steel for molding die having high hardness and its manufacture

Country Status (1)

Country Link
JP (1) JPH04263042A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011153346A (en) * 2010-01-27 2011-08-11 Daido Steel Co Ltd Method for manufacturing resin molding die

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58221262A (en) * 1982-11-01 1983-12-22 Daido Steel Co Ltd Age hardening steel for metallic mold for plastic
JPS6067641A (en) * 1983-09-22 1985-04-18 Daido Steel Co Ltd Steel for aging hardened plastic mold
JPS6267152A (en) * 1985-09-18 1987-03-26 Hitachi Metals Ltd Tool steel for hot working
JPS63162811A (en) * 1986-12-26 1988-07-06 Kawasaki Steel Corp Manufacture of precipitation-hardening steel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58221262A (en) * 1982-11-01 1983-12-22 Daido Steel Co Ltd Age hardening steel for metallic mold for plastic
JPS6067641A (en) * 1983-09-22 1985-04-18 Daido Steel Co Ltd Steel for aging hardened plastic mold
JPS6267152A (en) * 1985-09-18 1987-03-26 Hitachi Metals Ltd Tool steel for hot working
JPS63162811A (en) * 1986-12-26 1988-07-06 Kawasaki Steel Corp Manufacture of precipitation-hardening steel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011153346A (en) * 2010-01-27 2011-08-11 Daido Steel Co Ltd Method for manufacturing resin molding die

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Legal Events

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A02 Decision of refusal

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Effective date: 19951017