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Die forging production technology for hard copper alloy explosion-proof instrument

A production process, copper alloy technology, applied in aluminum bronze alloy explosion-proof tool die forging production process, beryllium bronze field, can solve the problems of poor quality, short service life, low strength of explosion-proof tools, etc., to achieve high density and long service life. Effect

Active Publication Date: 2009-05-13
HEBEI BOTOU SAFETY TOOLS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The explosion-proof tools produced by this process have low strength, poor quality and short service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] According to the proportioning composition of beryllium bronze and aluminum bronze explosion-proof tool alloy materials, the invention is adapted to the percentage composition of manufacturing tool materials, and the raw materials are added to the smelting furnace for alloy smelting according to the production process. The smelting temperature reaches 1100°C to start sand casting. Stir and evenly pour the copper liquid with qualified smelting temperature into the sand mold or steel tire gate to form casting hair damage. The above-mentioned qualified blanks of castings are then reheated to 780℃, and then the blanks are taken out, and the blanks are delayed for 5 seconds until the temperature drops to 700℃. At this time, the mold is preheated to 300℃ and placed in the forging equipment. Calendering is used in the mold to prepare for calendering; the upper and lower molds of the calendering equipment must be calibrated before starting up, and then the heated blanks are put int...

Embodiment 2

[0015] According to the proportioning composition of beryllium bronze and aluminum bronze explosion-proof tool alloy materials, the invention is adapted to the percentage composition of manufacturing tool materials, and the raw materials are added to the smelting furnace for alloy smelting according to the production process. The smelting temperature reaches 1080 ℃ to start sand casting. Stir and evenly pour the copper liquid with qualified smelting temperature into the sand mold or steel tire gate to form casting hair damage. The above-mentioned qualified blanks for castings are reheated to 770°C and the blanks are taken out, and the blanks are delayed for 7 seconds to reduce the temperature to 690°C. At this time, the mold is preheated to 280°C and placed in the forging equipment. Calendering is used in the mold to prepare for calendering; the upper and lower molds of the calendering equipment must be calibrated before starting up, and then the heated blanks are put into the mol...

Embodiment 3

[0017] According to the proportioning composition of beryllium bronze and aluminum bronze explosion-proof tool alloy materials, the invention is adapted to the percentage composition of manufacturing tool materials, and the raw materials are added to the smelting furnace for alloy smelting according to the production process. The smelting temperature reached 1120°C to start sand casting. Stir and evenly pour the copper liquid with qualified smelting temperature into the sand mold or steel tire gate to form casting hair damage. The above-mentioned qualified blanks of castings are then reheated to 790°C and the blanks are taken out, and the blanks are delayed for 10 seconds until the temperature drops to 710°C. At this time, the mold is preheated to 320°C and placed in the forging equipment. Calendering is used in the mold to prepare for calendering; the upper and lower molds of the calendering equipment must be calibrated before starting up, and then the heated blanks are put into ...

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Abstract

The die forging process of producing beryllium bronze and aluminum bronze alloy anti-explosive tool includes the following steps; smelting the alloy with proper materials at 1080-1120 deg.c, casting with the molten alloy to form casting blank, heating the casting blank for the second time at 770-790 deg.c, taking out the blank and delaying 5-10 sec to make its temperature lower to 690-710 deg.c and rolling pressing via setting the blank into die preheated to 280-320 deg.c. The die forged product thus produced has no bending, no deformation, high density and long service life.

Description

Technical field [0001] The invention relates to a die forging production process of beryllium bronze and aluminum bronze alloy explosion-proof tools. technical background [0002] At present, ordinary explosion-proof tools are composed of beryllium bronze and aluminum bronze alloy materials. The production process is based on the proportion of beryllium bronze and aluminum bronze explosion-proof tool alloy materials and is adapted to the percentage composition of the manufacturing tool materials. This raw material is added according to the production process. The smelting furnace performs alloy smelting. After melting, the temperature reaches 1100℃±20℃ to start sand casting. Stir and evenly pour the copper liquid with qualified melting temperature into the sand mold or steel tire gate to form casting hair damage. Then the key parts of the machine are processed, and the surface is polished and polished to a qualified product. The explosion-proof tools produced by this process have...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P23/04
Inventor 杨栋江
Owner HEBEI BOTOU SAFETY TOOLS CO LTD
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