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

A metal casting and aluminum bronze technology, which is applied in the field of metal casting for manufacturing aluminum bronze explosion-proof hammers, can solve the problems of easy cracking of aluminum bronze explosion-proof hammers, high rejection rate, and coarse structure, and avoid shrinkage and porosity defects. , High production efficiency, uniform and fine grain effect

Active Publication Date: 2020-04-28
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 for manufacturing aluminum bronze explosion-proof hammer and method thereof
  • Metal casting mold for manufacturing aluminum bronze explosion-proof hammer and method thereof
  • Metal casting mold for manufacturing aluminum bronze explosion-proof hammer and method thereof

Examples

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Comparison scheme
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 casting mold for manufacturing an aluminum bronze explosion-proof hammer. The metal casting mold comprises an upper half mold and a lower half mold which are horizontally parted, wherein an upper casting mold half cavity is formed in the upper half mold; a lower casting mold half cavity corresponding to the upper casting mold half cavity is correspondingly formed in the lower half mold; an upper half core is arranged in the center of the top surface of the upper casting mold half cavity; a lower half core is arranged in the center of the bottom surface of the lower casting mold half cavity; an exhaust passage is formed in the parting surface of the upper half mold and the lower half mold on the outer side of an explosion-proof hammer head cavity; an upper pressure head is arranged on the upper half mold; a storage cavity is formed in the center of the lower half mold; a lower pressure head is arranged at the bottom of the storage cavity; and a runner isarranged between the storage cavity and the lower casting mold half cavity. The invention further relates to a method for manufacturing the aluminum bronze explosion-proof hammer by using the metal casting mold, so that the problems of low density, thick and large structure and being prone to block jumping in use in the production of the aluminum bronze explosion-proof hammer head in the prior art of casting are solved.

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 Applications(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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