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Investment rapid casting process

A rapid casting and process technology, applied in the field of investment casting, can solve problems such as damage, part deformation, and affecting product quality

Inactive Publication Date: 2017-05-10
重庆信安玻璃股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is very easy to knock the parts during the knocking process, resulting in deformation and damage of the parts, affecting the quality of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The rapid investment casting process includes the following steps:

[0020] The first step is to make an ice mold, so that the cavity of the ice mold is exactly the same shape as the casting, and the ice mold is a double-layer structure, and a cavity is formed between the double-layer structures;

[0021] The second step is to prepare ceramic slurry;

[0022] The third step is to pour the parting agent into the cavity of the ice mold under the environment of -10℃~-5℃, pour out all the parting agent after filling, and put the spiral strip asbestos in the cavity Pull rope with a width of 15mm and a helix pitch of 30mm to fill the cavity with ceramic slurry;

[0023] In the fourth step, the ceramic slurry is placed in an environment of -10°C to -5°C for 1 to 2 hours to fully gel the slurry;

[0024] The fifth step, after the ceramic slurry is fully gelled, take it out and place it at room temperature, and the ice mold will melt naturally to obtain a ceramic shell;

[00...

Embodiment 2

[0030] The rapid investment casting process includes the following steps:

[0031] The first step is to make an ice mold, so that the cavity of the ice mold is exactly the same shape as the casting, and the ice mold is a double-layer structure, and a cavity is formed between the double-layer structures;

[0032] The second step is to prepare ceramic slurry;

[0033] The third step is to pour the parting agent into the cavity of the ice mold under the environment of -10 ℃, pour out all the parting agent after filling, and put a spiral strip asbestos pull rope in the cavity, the width is 15mm, and the screw pitch is 30mm, fill the cavity with ceramic slurry;

[0034] In the fourth step, the ceramic slurry is placed at -10°C for 1 hour to fully gel the slurry;

[0035] The fifth step, after the ceramic slurry is fully gelled, take it out and place it at room temperature, and the ice mold will melt naturally to obtain a ceramic shell;

[0036] The sixth step is to bake the cera...

Embodiment 3

[0041] The rapid investment casting process includes the following steps:

[0042] The first step is to make an ice mold, so that the cavity of the ice mold is exactly the same shape as the casting, and the ice mold is a double-layer structure, and a cavity is formed between the double-layer structures;

[0043] The second step is to prepare ceramic slurry;

[0044] The third step is to pour the parting agent into the cavity of the ice mold under the environment of -5 ℃, pour out all the parting agent after filling, and put a spiral strip asbestos pull rope in the cavity, the width is 15mm, and the screw pitch is 30mm, fill the cavity with ceramic slurry;

[0045] In the fourth step, the ceramic slurry is placed at -5°C for 2 hours to fully gel the slurry;

[0046] The fifth step, after the ceramic slurry is fully gelled, take it out and place it at room temperature, and the ice mold will melt naturally to obtain a ceramic shell;

[0047] The sixth step is to bake the ceram...

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Abstract

The invention discloses a rapid investment casting technology. An ice mold is adopted to prepare a ceramic shell, and the ice mold can be automatically melt into water under a normal temperature, so that more problems about demolding cannot be involved. A release agent is smeared on the cavity surface of the ice mold by adopting a method of pouring into a parting agent; in addition, because a spiral asbestos rope is placed in the cavity of the ice mold, after the ceramic shell is formed, the asbestos rope can be reserved in the ceramic shell. When demolding is performed, the asbestos rope can be pulled so as to destroy the structure of the ceramic shell, so that the rapid investment casting technology can have the function of smashing the ceramic shell; after the ceramic shell is smashed, components can be conveniently taken out. The rapid investment casting technology disclosed by the invention is unique in conception, and changes a conventional manner of striking the ceramic shell, so that the components cannot be damaged by impact during demolding.

Description

technical field [0001] The invention relates to an investment casting technology, in particular to an investment rapid casting process. Background technique [0002] Investment casting usually refers to making patterns from fusible materials, covering the surface of the pattern with several layers of refractory materials to make a shell, and then melting the pattern and discharging the shell, so as to obtain a mold without a parting surface. After high-temperature roasting Ready-to-sand casting casting solution. The types of alloys that can be produced by investment casting include carbon steel, alloy steel, heat-resistant alloy, stainless steel, precision alloy, permanent magnet alloy, bearing alloy, copper alloy, aluminum alloy, titanium alloy and ductile iron. The shape of investment castings is generally more complex, the minimum diameter of the hole that can be cast on the casting can reach 0.5mm, and the minimum wall thickness of the casting is 0.3mm. In production, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/04
Inventor 唐昌兵
Owner 重庆信安玻璃股份有限公司
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