Method for producing inspection well cover and evanescent mold for casting inspection well cover

A production method and manhole cover technology, which are applied in casting molding equipment, casting molds, casting mold components, etc., can solve the problems of serious environmental pollution, complex production process, and many production process points, and achieve serious environmental pollution and process yield. Low, labor-intensive effect

Active Publication Date: 2014-08-27
湖南金龙智造科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This production method has low process yield, high labor intensity, large draft angle, and serious environmental pollution; and there are many production process points, complex production process, and low production efficiency.

Method used

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  • Method for producing inspection well cover and evanescent mold for casting inspection well cover
  • Method for producing inspection well cover and evanescent mold for casting inspection well cover

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: see figure 1 and figure 2 , the lost pattern of casting manhole cover has the first lost pattern 1; the second lost pattern 2; the lost pattern of the sprue buffer chamber 7; the lost pattern of the runner 8; the lost pattern of the sprue 5; ; ceramic connecting sleeve 6; a plurality of coated sand supports 3, the first disappearing pattern 1 and the second disappearing pattern 2 are connected symmetrically with six coated sand supports 3; the sprue buffer chamber disappearing pattern 7 is located in the The bottom of the runner disappearing pattern 8 is integrated with it; the two ends of the runner disappearing pattern 8 are respectively connected with the inner runner disappearing pattern 9 of the first disappearing pattern 1 and the second disappearing pattern 2; the sprue The disappearing pattern 5 and its integrated sprue cup disappearing pattern 4 are connected to the runner disappearing pattern 8 through a ceramic connecting sleeve 6 .

[0022] ...

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PUM

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Abstract

The invention discloses a method for producing an inspection well cover and an evanescent mold for casting the inspection well cover. A first evanescent pattern (1) and a second evanescent pattern (2) are symmetrically connected through at least three supports (3). A sprue buffer room evanescent pattern (7) is communicated with a cross gate evanescent pattern (8); the cross gate evanescent pattern (8) is communicated with an ingate evanescent pattern body (9) of the first evanescent pattern (1) and an ingate evanescent pattern body (9) of the second evanescent pattern (2), and therefore a pattern set is formed. According to dry sand slight shock modeling, one or more identical or different pattern sets are placed into a sand box. In the sand filling process, a sprue evanescent pattern (5), a sprue cup evanescent pattern (4) and each pattern set are connected into a whole through a connection sleeve (6). Negative pressure pouring is achieved.

Description

technical field [0001] The invention relates to the technical field of ferrous metal casting, in particular to a production method of a manhole cover, and also relates to a lost foam casting manhole cover. Background technique [0002] The traditional manhole cover production method is a production method of green sand molding, core and box, and then pouring molding. This production method has low process yield, high labor intensity, large draft angle and serious environmental pollution; moreover, there are many production process points, complex production process and low production efficiency. It is a heavily polluting, low-efficiency production method. Contents of the invention [0003] The invention proposes a production method of the manhole cover and casting lost foam of the manhole cover, adopts the anti-deformation lost foam process, and has a high yield rate of the process. [0004] In order to solve the foregoing technical problems, on the one hand, the present...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C7/02B22C9/04
Inventor 黄为廖成智陈建平童攀
Owner 湖南金龙智造科技股份有限公司
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