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Method for hardening sand mold by CO2 blowing

A gas hardening, sand molding technology, applied in the direction of casting mold, core, mold composition, etc.

Inactive Publication Date: 2005-11-30
鑫工艺(上海)材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a method that can effectively overcome the deficiencies in the existing sand mold manufacturing process, and can make the overall hardening efficiency of the sand mold high and uniform, CO 2 CO with less gas consumption and no box leakage due to improper blow hole setting during pouring 2 The method of air blow hardening sand mold

Method used

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Embodiment Construction

[0017] The method of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0018] exist figure 1 with figure 2 In, using the CO of the present invention 2 When the sand mold is manufactured by the method of blowing and hardening the sand mold, the casting mold 2 is first set in the sand box 1, and then a number of round rods 6 are inserted into a number of corresponding positioning holes 4 on a side wall 5 of the sand box 1 provided with the positioning holes 4, Keep a certain vertical distance between the round rod 6 and the surface of the mold 2, cross the top of the mold 2 horizontally, and keep a certain distance between the top 7 of the round rod and the other side wall 8 of the sand box to ensure the thickness of the sand layer there. , and pour part of the molding sand 3, and fill the sand on the lower side of the round rod 6 for positioning; then fill the sand and shape it according to the con...

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Abstract

This invention relates to blowing with CO2 and hardening sand mould method. on one side wall of casting box or casting frame, set location holes according to given certain size and amount; when preparing sand mould, for different mould shapes, insert round bars crossed horizontally mould top to nearby of another side wall to wall holes accorded with blowing hole diameter and amount; on the base that ensures keep certain sand layer thickness between bar and mould surface and certain distance between its top and another side of sand box, fall moulding sand, ram and locate; after forming, draw out bar, form blowing air hole; cover plant plate on sand box top, blow CO2 till sand mould change to hard. This invention can fit to all cavities variety request; the product has advantages of well quality, even harden, easy to demould and convenient to convey.

Description

technical field [0001] The invention relates to a casting sand mold blow hardening process, especially a CO 2 A method of hardening casting sand molds by air blowing. Background technique [0002] Sand casting, commonly known as "sand foundry", is a casting method that uses sand molding. Its working process is: 1. Manufacturing mold, that is, making a mold with wood or metal that is basically the same shape as the actual casting; 2. Manufacturing sand mold, that is, placing the mold in a sand box or a sand frame, filling the molding sand, and pounding the sand. , Shaping, leaving a cavity in the sand after taking out the mold, and it becomes a sand mold; 3. Pouring, that is, pouring molten metal into the sand mold; 4. Shaking and cleaning, that is, taking it out of the sand mold after the metal condenses. Making sand molds is an important and critical part of it. In order to make the sand mold harden and not deform, the general sand mold adopts the method of compaction an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/12
Inventor 于有根朱筠周联山
Owner 鑫工艺(上海)材料科技有限公司
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