JPS55120448A - Production of metal mold - Google Patents

Production of metal mold

Info

Publication number
JPS55120448A
JPS55120448A JP2720179A JP2720179A JPS55120448A JP S55120448 A JPS55120448 A JP S55120448A JP 2720179 A JP2720179 A JP 2720179A JP 2720179 A JP2720179 A JP 2720179A JP S55120448 A JPS55120448 A JP S55120448A
Authority
JP
Japan
Prior art keywords
metal
iron
weight
mold
copper
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.)
Granted
Application number
JP2720179A
Other languages
Japanese (ja)
Other versions
JPS6249137B2 (en
Inventor
Atsushi Watanabe
Masaru Sakota
Hiroshi Kumon
Shunichi Kawaguchi
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.)
Mazda Motor Corp
Original Assignee
Mazda Motor Corp
Toyo Kogyo Co Ltd
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 Mazda Motor Corp, Toyo Kogyo Co Ltd filed Critical Mazda Motor Corp
Priority to JP2720179A priority Critical patent/JPS55120448A/en
Publication of JPS55120448A publication Critical patent/JPS55120448A/en
Publication of JPS6249137B2 publication Critical patent/JPS6249137B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

PURPOSE: To inexpensively obtain the metal mold of good surface accuracy by placing copper brazing material via metal-made filter on the mixture of iron powder and iron-base aggregate packed in a mold, placing a weight via non-metal-made plate and heating the same to the specified temperature.
CONSTITUTION: The mixture of iron powder 2 and iron-base aggregate 3 is packed in the metal mold forming hole of a mold 1, and a metal-made filter 5 is placed over the entire top surface thereof, on which green compact 6 of copper or copper alloy to become brazing material is placed. Thence, a non-metal made plate 7 and weight 8 are subsequently placed thereof, after which these are heated in a gas furnace at the temperature lower than the melting point of iron but higher than the melting point of the copper to let the green compact 6 infilter into the mixture 4 through the filter 5, whereby backing is done. By giving a weight by the weight 8, the floating of the aggregate 3 is prevented, the surface accuracy improved and the cutting amount reduced or eliminated to lower working cost, whereby the metal mold of high strength is obtained.
COPYRIGHT: (C)1980,JPO&Japio
JP2720179A 1979-03-07 1979-03-07 Production of metal mold Granted JPS55120448A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2720179A JPS55120448A (en) 1979-03-07 1979-03-07 Production of metal mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2720179A JPS55120448A (en) 1979-03-07 1979-03-07 Production of metal mold

Publications (2)

Publication Number Publication Date
JPS55120448A true JPS55120448A (en) 1980-09-16
JPS6249137B2 JPS6249137B2 (en) 1987-10-17

Family

ID=12214471

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2720179A Granted JPS55120448A (en) 1979-03-07 1979-03-07 Production of metal mold

Country Status (1)

Country Link
JP (1) JPS55120448A (en)

Also Published As

Publication number Publication date
JPS6249137B2 (en) 1987-10-17

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