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Technology for manufacturing paper pouring gate pipe for casting

A sprue pipe and paper technology, which is applied in casting molding equipment, manufacturing tools, casting molds, etc., can solve the problems of insufficient strength and complex production, and achieve the effects of excellent performance, simple preparation and improved strength.

Inactive Publication Date: 2016-08-10
湖州炜炎环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, it still has the disadvantages of complicated production and insufficient strength. The present invention aims to provide a process for preparing a paper sprue tube for casting, which is simple to prepare and has excellent performance, especially greatly improved strength.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A process for preparing a paper sprue tube for casting, characterized in that the steps are as follows:

[0023] (1) Pulping waste paper;

[0024] (2) According to parts by weight, 70 parts of waste paper pulp, 8 parts of corundum powder, 12 parts of bauxite powder, 10 parts of binder, 0.5 part of plant ash, and stir evenly;

[0025] The binder is clay;

[0026] (3) Put the adjusted pulp into the molding machine to form a round tube;

[0027] (4) Put the round tube-shaped pulp wool into the shaping mold, and heat-press shaping;

[0028] (5) High temperature drying;

[0029] (6) The surface of the dried pulp pipe is sprayed with protective paint;

[0030] (7) After drying or air drying, they can be boxed and shipped.

[0031] Results: Compared with the paper sprue tube for casting disclosed in 201510723033.3, its strength was increased by 31%.

Embodiment 2

[0033] A process for preparing a paper sprue tube for casting, characterized in that the steps are as follows:

[0034] (1) Pulping waste paper;

[0035] (2) According to parts by weight, 70 parts of waste paper pulp, 10 parts of corundum powder, 10 parts of bauxite powder, 10 parts of binder, 0.5 parts of plant ash, and stir evenly;

[0036] The binder is clay;

[0037] (3) Put the adjusted pulp into the molding machine to form a round tube;

[0038] (4) Put the round tube-shaped pulp wool into the shaping mold, and heat-press shaping;

[0039] (5) High temperature drying;

[0040] (6) The surface of the dried pulp pipe is sprayed with protective paint;

[0041] (7) After drying or air drying, they can be boxed and shipped.

[0042] Results: Compared with the paper sprue tube for casting disclosed in 201510723033.3, its strength has been increased by 55%.

Embodiment 3

[0044] A process for preparing a paper sprue tube for casting, characterized in that the steps are as follows:

[0045] (1) Pulping waste paper;

[0046] (2) According to parts by weight, 70 parts of waste paper pulp, 9 parts of corundum powder, 11 parts of bauxite powder, 10 parts of binder, 0.5 part of plant ash, and stir evenly;

[0047] The binder is clay;

[0048] (3) Put the adjusted pulp into the molding machine to form a round tube;

[0049] (4) Put the round tube-shaped pulp wool into the shaping mold, and heat-press shaping;

[0050] (5) High temperature drying;

[0051] (6) The surface of the dried pulp pipe is sprayed with protective paint;

[0052] (7) After drying or air drying, they can be boxed and shipped.

[0053] Results: Compared with the paper sprue tube for casting disclosed in 201510723033.3, its strength is increased by 40%.

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PUM

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Abstract

The invention discloses a technology for manufacturing a paper pouring gate pipe for casting. The technology includes the steps that firstly, waste paper is crushed into pulp; secondly, by weight, 70 parts of the waste paper pulp, 8-10 parts of emery powder, 10-12 parts of bauxite powder, 10 parts of a bonding agent and 0.5 part of plant ash are evenly stirred; thirdly, stirred pulp is put into a forming machine to form a round pipe shape; fourthly, a paper pulp blank in the round pipe shape is put into a shaping die to be subjected to hot-pressing shaping; fifthly, high-temperature drying is conducted; sixthly, a protective coating is sprayed on the surface of the dried paper pulp pipe; and seventhly, the pipe can be boxed and delivered after being dried or aired. By means of the technology, manufacturing is simple, the performance is good, and especially the strength is greatly improved.

Description

technical field [0001] The invention belongs to the field of casting auxiliary materials in the metal casting industry, and in particular relates to a process for preparing a paper sprue tube for casting. Background technique [0002] Environmentally friendly refractory pipes (fiber pipes) for casting are mainly used in foundry enterprises in heavy industry. This product is used in the connection channel between casting molds and molding sand. The temperature of molten iron at about 1600 ° C flows into the cavity through the pipe for cooling and forming. The purpose of the product is to isolate the molding sand and prevent the molten iron from bringing the molding sand into the cavity at high temperature, resulting in unqualified casting quality. This product is used to improve the casting quality and reduce the scrap rate. The requirement for the refractory pipe is that it can withstand high temperature within a few seconds or minutes of contacting the high-temperature molt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/08B22C1/00
CPCB22C9/082B22C1/00
Inventor 姚伟
Owner 湖州炜炎环保科技股份有限公司
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