JPS55120448A - Production of metal mold - Google Patents
Production of metal moldInfo
- 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
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
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) |
-
1979
- 1979-03-07 JP JP2720179A patent/JPS55120448A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6249137B2 (en) | 1987-10-17 |
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