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Metal casting mold and method for manufacturing aluminum bronze explosion-proof hammer

A metal casting and aluminum bronze technology is applied in the field of metal casting for manufacturing aluminum bronze explosion-proof hammers, which can solve the problems of easy cracking of aluminum bronze explosion-proof hammer heads, high scrap rate, coarse structure, etc., and achieves easy control of matching clearance and uniformity. High production efficiency, uniform and fine grains

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

[0004] The purpose of the present invention is to provide a metal casting mold for manufacturing aluminum bronze explosion-proof hammers and a method for manufacturing aluminum bronze explosion-proof hammer heads, so as to solve the problems of low density, coarse structure and easy use in the production of aluminum bronze explosion-proof hammer heads in the existing casting technology. The problem of jumping blocks, and at the same time solve the problem that the aluminum 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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  • Metal casting mold and method for manufacturing aluminum bronze explosion-proof hammer
  • Metal casting mold and method for manufacturing aluminum bronze explosion-proof hammer
  • Metal casting mold and method for manufacturing aluminum bronze explosion-proof hammer

Examples

Experimental program
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Effect test

Embodiment 1

[0038] A metal casting mold for manufacturing aluminum bronze explosion-proof hammers, which includes a horizontally divided 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.

[0039] 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 aluminum bronze explosion-proof hammer head.

[0040] 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 ...

Embodiment 2

[0048] A kind of method utilizing the metal mold of embodiment 1 to manufacture aluminum bronze explosion-proof hammer, it comprises the steps:

[0049] (1) Melting aluminum bronze alloy to obtain aluminum bronze alloy liquid; the aluminum bronze alloy includes the following components in mass percentage: Ni 5.5%, Fe 5.1% and the balance Cu; melting temperature is 1200°C.

[0050] (2) Clamping and locking the mold: pour the aluminum bronze alloy liquid into the material storage cavity 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 ) × 90 (MPa); pressure locking mold clamping is to use pressure equipment to directly compress the upper and lower molds. The pressurizing equipment is a hydraulic press, the nominal force of the main cylinder is 6000 kN, the upper extrusion c...

Embodiment 3

[0055] A kind of method utilizing the metal mold of embodiment 1 to manufacture aluminum bronze explosion-proof hammer, it comprises the steps:

[0056] (1) Melting and processing aluminum bronze alloy to obtain aluminum bronze alloy liquid; the aluminum bronze alloy includes the following components in mass percentage: Ni 8.0%, Fe 6.5% and the balance Cu; melting temperature is 1300°C.

[0057] (2) Clamping and locking the mold: pour the aluminum bronze alloy liquid into the material storage cavity 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).

[0058] (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 aluminum bronze alloy liquid in the storage chamber, so ...

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Abstract

The invention relates to a metal mold for manufacturing an aluminum bronze explosion-proof hammer, which includes a horizontally divided upper half mold and a lower half mold; A lower mold half-cavity corresponding to the upper mold half-cavity is provided, an upper half-core is arranged in the center of the top surface of the upper mold half-cavity, and a lower half-core is arranged in the center of the bottom surface of the lower mold half-cavity; The outside of the explosion-proof hammer head cavity is located on the parting surface of the upper half and the lower half, and an exhaust channel is provided; the upper half is provided with an upper pressure head; the center of the lower half is provided with a material storage cavity, the bottom of the storage cavity is provided with a lower pressure head; a flow channel is provided between the storage cavity and the lower mold half cavity. The present invention also relates to a method for manufacturing an aluminum 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 aluminum 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 metal mold and method for manufacturing an aluminum bronze explosion-proof hammer. Background technique [0002] Aluminum bronze explosion-proof hammer is a special tool used in flammable and explosive environments. When the hammer head impacts with objects, it does not produce tiny metal particles and sparks. At present, the manufacturing methods of aluminum bronze explosion-proof hammers include casting, forging, and combination of casting and forging. Among them, the casting of aluminum bronze explosion-proof hammers is to use sand molds to pour and solidify under gravity. Low density, rough surface, The problem of large size fluctuations; the forging of aluminum bronze explosion-proof hammerheads is to use aluminum bronze rods to plastically deform within the forging temperature range to obtain explosion-proof hammerhead blanks, and then process them into ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D17/22C22C9/06C22F1/08
CPCB22D17/22B22D17/2272C22C9/06C22F1/08
Inventor 邢书明高文静杨景华韩亮
Owner HEBEI BOTOU SAFETY TOOLS CO LTD
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