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Rapid shell making method of shell for precision casting

A precision casting and rapid technology, which is used in casting molding equipment, molds, and machinery for cleaning/processing mold materials, etc., can solve problems such as low efficiency, inconvenient stirring and reclaiming operations, and achieve high efficiency and adjustable operation. Simple, convenient and safe

Active Publication Date: 2021-12-21
HUZHOU NANFENG MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, the mud mixing equipment in this utility model patent is inconvenient to carry out material retrieving operation while stirring, and the output speed is also constant, which is also very inefficient when performing large-scale wax mold sizing

Method used

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  • Rapid shell making method of shell for precision casting
  • Rapid shell making method of shell for precision casting
  • Rapid shell making method of shell for precision casting

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Experimental program
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Embodiment

[0025] Example: as attached Figure 1-4 Shown, a kind of fast shell-making method of mold shell for investment casting, its step comprises adding quick-drying complexing agent to mud, the composition of described fast-drying complexing agent comprises polyacrylamide, kaolin, bentonite and polyethylene wax , the slurry containing the quick-drying complexing agent is carried out wax model sizing operation in an open type mixer.

[0026] The open type mixer comprises a circular mixing bucket 1, a stirring column 2 arranged on the bottom plate of the circular mixing bucket 1, a connecting column 3 arranged at the upper position of the stirring column 2, and a connecting column 3 arranged on the connecting column 3 and the U-shaped stirring frame 4 for inserting the wax model group tree a inside, and the two columns and the bottom horizontal plate arranged on the U-shaped stirring frame 4 and used for the wax model group tree by rotating a The rotary pushing plate unit 5 that push...

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PUM

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Abstract

The invention belongs to the technical field of investment casting, and particularly relates to a rapid shell making method of a shell for precision casting. According to the method, a quick-drying complexing agent is added into an open type stirrer, and it is ensured that the quick-drying complexing agent is uniformly distributed in the shell in a manner of stirring and sizing at the same time, so that the shell manufacturing period of the shell is short, and the strength of the shell is high. The rapid shell making method has the following advantages that firstly, the formula of the quick-drying complexing agent has a basic slurry quick-drying forming effect, the open type stirrer conducts stirring all the time during sizing, and the quick-drying complexing agent is uniformly distributed in slurry; secondly, the open type stirrer can form a slurry polymerization port which is relatively attached to each other at the two sides of upper and lower wax mold group trees with different width sizes, so that sufficient feeding quantity is ensured; and thirdly, according to the overall dimension of the wax mold set trees, the opening and closing angle of a rotary push plate unit can be adjusted in a targeted and independent mode, the whole adjusting operation is simple and convenient, and changing after adjustment is not prone to happening.

Description

technical field [0001] The invention belongs to the technical field of investment casting, in particular to a rapid shell-making method for a mold shell for precision casting. Background technique [0002] For precision investment casting, it is necessary to ensure that the shell has a relatively short shell-making cycle, so as to reduce the collapse problem when the shell is formed, which is even more important for thin-walled castings such as impellers. [0003] Therefore, a quick-drying complexing agent is generally added to the mud, but the quick-drying complexing agent will continue to sink in the mud system in a static state, so when the upper mud is used, it will dry quickly because it has just been stirred. The content of complexing agent is appropriate. When the intermediate mud is used, the content of quick-drying complexing agent will be low. Similarly, when the mud is used in the end, it will be found that the amount of quick-drying complexing agent is too high. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/04B22C1/02B22C5/04
CPCB22C9/04B22C1/02B22C5/0472Y02P10/20
Inventor 谈敏姚建堂
Owner HUZHOU NANFENG MACHINERY MFG