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Metal gravity casting mould and method

A technology of gravity casting and metal mould, which is applied in the field of metal type gravity casting mold and casting, and metal type gravity casting. It can solve the problems of large waste gas discharge of redundant structures and increased air permeability of sand cores, so as to achieve good compactness and improve utilization Efficiency and less exhaust gas

Inactive Publication Date: 2012-10-03
MAIN PLAN NINGBO BATHROOM COLLECTIONS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to provide a metal type gravity casting mold and a casting method that can reduce the production process of castings and has a small amount of waste gas emission in the casting process, so as to solve the existing problems of existing metal type gravity castings that will produce redundant structures and The problem of large exhaust emissions
On the one hand, after the bonding material is burned, the air permeability of the sand core will increase. On the other hand, the thickness of the sand layer will be thinner after the exhaust channel is set in the inner cavity sand core, so that the gas can pass through the inner cavity sand core more easily. while discharging

Method used

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  • Metal gravity casting mould and method
  • Metal gravity casting mould and method

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Embodiment 1

[0022] Embodiment one, see figure 1 , a metal gravity casting mold, comprising a metal mold 1 and an inner cavity sand core 2.

[0023] The metal mold 1 includes a first mold half 11 and a second mold half 12 . A cavity 13 is provided in the metal mold 1 . A pouring hole 14 and four positioning holes 15 are provided on the metal mold 1 . Three of the four positioning holes 15 are through holes. The pouring hole 14 and the positioning hole 15 are arranged on the connecting surface of the first half mold 11 and the second half mold 12 . Casting holes are only offered on the first half mold 11. The positioning hole 15 is surrounded by a half on the first mold half and a half on the second mold half.

[0024] The inner cavity sand core 2 is formed by molding sand bonded together by a bonding material. The cavity core 2 is provided with four connecting heads 21 . The cavity core 2 is provided with an exhaust channel 22 extending from the end surface of one of the four connec...

Embodiment 2

[0026] Embodiment two, see image 3 , the difference with the first embodiment is: all the positioning holes 15 do not pass through the metal mold 1, that is, they are not through holes. The outlet 221 of the exhaust channel is arranged on the side of the positioning head 21 . An air passage 16 communicating with the outer surface of the metal mold 1 and the outlet 221 of the exhaust passage is provided in the metal mold. During the casting process, the gas in the exhaust through hole 22 is discharged to the outside of the metal mold 1 through the air channel 16 .

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Abstract

The invention relates to a metal gravity casting mould which comprises a metal mould and an inner cavity core. A plurality of positioning heads is arranged on the inner cavity core; the inner cavity core is internally provided with an exhaust channel; and the outlet of the exhaust channel is located on the positioning heads and communicated with the outside of the metal mould. Due to the adoption of the metal gravity casting mould and method, the production processes of the casts are reduced, and the amount of the exhaust emitted in the casting process is low. The metal gravity casting mould and method solve the problems of the existing metal gravity casting mould and method that the casts have unwanted structures and the exhaust emission amount is high.

Description

technical field [0001] The invention relates to metal type gravity casting, in particular to a metal type gravity casting mold and a casting method, and belongs to the field of gravity casting. Background technique [0002] Gravity casting refers to the process in which molten metal is poured into the mold under the action of the gravity of the earth, also known as gravity casting. Gravity casting includes sand casting, metal casting, investment casting, lost foam casting, mud casting, etc. Metal mold weight casting is a process in which heat-resistant alloy steel is used to make a hollow casting mold for casting and the molten metal is injected into the hollow casting mold by relying on the gravity of the earth. The casting mold in metal mold gravity casting can be used repeatedly, and every time the molten metal is poured, a casting is obtained, and the production efficiency is very high. The castings produced by gravity casting of metal molds not only have good dimensio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/02B22C9/06
Inventor 施清海
Owner MAIN PLAN NINGBO BATHROOM COLLECTIONS
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