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Production method of manhole cover and lost foam of casting manhole cover

A production method and technology of manhole cover, applied in the direction of casting molding equipment, casting mold, casting mold composition, etc., can solve the problems of complex production process, many production process points, serious environmental pollution, etc., and achieve serious environmental pollution and high labor intensity , The effect of low process yield

Active Publication Date: 2016-08-17
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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  • Production method of manhole cover and lost foam of casting manhole cover
  • Production method of manhole cover and lost foam of casting manhole cover

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0022] The production process of the manhole cover casting embodiment is as f...

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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 manhole covers. The invention also relates to a lost foam casting manhole cover. Background technique [0002] The traditional production method of manhole cover is the production method of green sand modeling, core-fitting and pouring. This production method has low process yield, high labor intensity, large draft angle, serious environmental pollution; moreover, there are many production process points, the production process is complicated, and the production efficiency is low. It is a production method with heavy pollution and low efficiency. Summary of the invention [0003] The present invention proposes a production method of the manhole cover and the lost foam casting of the manhole cover, adopts the anti-deformation lost foam process, and has a high process yield. [0004] In order to solve the aforementioned technical problems, on the one ...

Claims

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Application Information

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Patent Type & Authority Patents(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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