A method of manufacturing beryllium bronze explosion-proof hammer

A beryllium bronze and beryllium manufacturing technology, applied in the field of explosion-proof tool manufacturing, can solve the problems of coarse structure, high rejection rate, easy cracking, etc., and achieve the effects of uniform and fine grains, high production efficiency, and high effective pressure.

Active Publication Date: 2021-09-07
HEBEI BOTOU SAFETY TOOLS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this invention is to provide a kind of manufacturing method of the metal mold of making beryllium bronze explosion-proof hammer and beryllium bronze explosion-proof hammer head, to solve the low density, coarse structure and easy use in the production of beryllium bronze explosion-proof hammer head existing casting technology. The problem of jumping blocks, and at the same time solve the problem that the beryllium bronze explosion-proof hammer head produced by the existing forging or casting and forging technology is easy to crack and lead to high scrap rate

Method used

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  • A method of manufacturing beryllium bronze explosion-proof hammer
  • A method of manufacturing beryllium bronze explosion-proof hammer
  • A method of manufacturing beryllium bronze explosion-proof hammer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A metal casting mold for manufacturing beryllium bronze explosion-proof hammer, which includes a horizontally split upper half-type 1 and a lower half-type 2; the upper half-type 1 is provided with an upper mold half cavity 3, and the lower half-type 2 A lower mold half cavity 4 corresponding to the upper mold half cavity 3 is arranged on the upper side, and the upper mold half cavity 3 and the lower mold half cavity 4 are closed to form an explosion-proof hammer head cavity.

[0041] The metal casting mold is made of hot work abrasive steel, and is horizontally parted. The parting surfaces of the upper half and the lower half of the mold are located on the horizontal center plane of the beryllium bronze explosion-proof hammer head.

[0042] The center of the top surface of the upper mold half cavity 3 is provided with an upper half core 5, and the center of the bottom surface of the lower mold half cavity 4 is provided with a lower half core 6, and the upper half core 5...

Embodiment 2

[0050] A kind of method utilizing metal mold in embodiment 1 to manufacture beryllium bronze explosion-proof hammer, it comprises the steps:

[0051] (1) Smelting and processing the beryllium bronze alloy to obtain a beryllium bronze alloy liquid; the beryllium bronze alloy includes the following components in mass percentage: Be 1.80% and the balance Cu, without Ni; the melting temperature is 1200°C.

[0052] (2) Clamping and locking the mold: pour the beryllium bronze alloy liquid into the storage chamber of the lower half mold by gravity within 2 to 5 seconds, close the upper half mold and the lower half mold and pressurize and lock, the pouring temperature It is 1200°C. The applied pressure (N) ≥ the horizontal projected area of ​​the entire cavity (mm 2 ) × 100 (MPa); Pressurized locking mold clamping is to use pressurized equipment to directly compress the upper and lower molds. The pressurizing equipment is a hydraulic press, the nominal force of the main cylinder is ...

Embodiment 3

[0057] A kind of method utilizing metal mold in embodiment 1 to manufacture beryllium bronze explosion-proof hammer, it comprises the steps:

[0058] (1) Smelting and treating the beryllium bronze alloy to obtain a beryllium bronze alloy liquid; the beryllium bronze alloy includes the following components in mass percentage: Be 2.00% and the balance Cu, without Ni; the melting temperature is 1300°C.

[0059] (2) Clamping and locking the mold: pour the beryllium bronze alloy liquid into the storage chamber of the lower half mold by gravity within 2 to 5 seconds, close the upper half mold and the lower half mold and pressurize and lock, the pouring temperature It is 1200°C. The applied pressure (N) ≥ the horizontal projected area of ​​the entire cavity (mm 2 )×160 (MPa).

[0060] (3) Pressurized solidification: within 1-3 seconds after the clamping pressure is added to the set value, the lower pressure head is used to push the beryllium bronze alloy liquid in the material stor...

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Abstract

The invention relates to a method for manufacturing a beryllium bronze explosion-proof hammer, which is formed by a metal mold, and the metal column includes an upper half mold and a lower half mold that are horizontally split; the upper mold half is provided with an upper mold half cavity, the lower mold half cavity is correspondingly provided with a lower mold half cavity corresponding to the upper mold half cavity, and an upper half core is arranged in the center of the top surface of the upper mold half cavity, and the lower mold half cavity The center of the bottom surface is provided with a lower half core; the outside of the explosion-proof hammer head cavity is provided with an exhaust channel on the parting surface of the upper half type and the lower half type; the upper half type is provided with an upper pressure head; the The center of the lower half mold is provided with a material storage cavity, and the bottom of the material storage cavity is provided with a lower pressure head; a flow channel is provided between the material storage cavity and the lower mold half cavity. The invention also relates to a method for manufacturing a beryllium bronze explosion-proof hammer by using the above-mentioned metal casting mold, so as to solve the problems of low density, coarse structure and easy jumping during use of the beryllium bronze explosion-proof hammer produced by the existing casting technology.

Description

technical field [0001] The invention relates to the field of manufacturing explosion-proof tools, in particular to a method for manufacturing a beryllium bronze explosion-proof hammer. Background technique [0002] Beryllium bronze explosion-proof hammer is a kind of safety tool used in flammable and explosive special occasions. An ideal explosion-proof tool. [0003] The traditional manufacturing methods of beryllium bronze explosion-proof hammers include casting, forging, and combination of casting and forging. Among them, the casting of beryllium bronze explosion-proof hammers is to use sand molds to pour and solidify under gravity. The problem of large fluctuations. The forging method of beryllium bronze explosion-proof hammer head is to plastically deform the bar within the forging temperature range to obtain the explosion-proof hammer head blank. This method requires a long process flow and a large tonnage of equipment. Prone to cracks leading to high scrap rate. T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D18/02C22C9/00
CPCB22D18/02C22C9/00
Inventor 邢书明高文静杨景华韩亮
Owner HEBEI BOTOU SAFETY TOOLS CO LTD
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