Craft manufacturing flow for lost-wax casting value body with more than 8-inch caliber

A wax pattern making and valve body technology, applied in the directions of casting molds, casting mold components, manufacturing tools, etc., can solve the problems of easy cracking and falling off, difficulty in turning over, and bulky wax patterns, and achieve good product quality, beautiful product appearance, and finished products. high rate effect

Active Publication Date: 2010-12-29
江苏万恒铸业有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the process problems such as bulky wax pattern, difficult turning over, easy cracking, falling off and damage to the wax pattern, and specially provides a production process of a lost-wax precision casting valve body with a diameter of 8 inches or more

Method used

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  • Craft manufacturing flow for lost-wax casting value body with more than 8-inch caliber
  • Craft manufacturing flow for lost-wax casting value body with more than 8-inch caliber

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Experimental program
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Embodiment Construction

[0011] The manufacturing process of the valve body with a diameter of more than 8 inches in lost wax precision casting of the present invention is as follows:

[0012] 1. Wax pattern production: firstly make a wax pattern of the 8-inch valve body, and increase the strength of the flange side of the wax pattern of the valve body 1. The size of the reinforcing rib 2 is a wedge semicircle, the thickness of the upper opening is equal to the thickness of the flange of the valve 1, the radius of the semicircle is about 75% of the radius of the flange, and the boss of the upper opening is 100×90×100mm. Then make the feeding block 3, the feeding block 3 is 200×200×100mm, and the section of the connecting runner is 100×100mm. Make whole wax pattern again at last, go out feeding block 3, sprue cup 4, wax handle 5, vent hole 7 with integral molding, as a whole. A separate sprue is 150×120×150mm, and the whole valve body and reinforcing rib are integrally molded.

[0013] 2. Coating she...

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Abstract

The invention provides a craft manufacturing flow for lost-wax casting a value body with a more than 8-inch caliber, aiming to solve the craft difficult problems that a wax form is heavy, is difficult to turn, is easy to be damaged by cracking and shedding and the like. The invention adopts reinforcing ribs to enhance the strength of the value body and enlarge a welding contact area of a running gate system. The invention has simple manufacturing, high finished product ratio, good quality and the like; the product has smooth and beautiful appearance, stable size and small morpheme error; and shooting shows that the inner part of the product has no crack and shrinkage porosity phenomena, thus reaching the over second-level RT requirement.

Description

technical field [0001] The invention relates to a manufacturing process of a lost-wax precision casting valve body with a caliber of more than 8 inches. Background technique [0002] Valves over 8 inches are widely used in various infrastructure pipelines. At present, the production of valve body blanks mainly adopts sand casting, which has large errors in shape and position, rough surface, many internal defects, and shrinkage and looseness of the structure. And the authenticity rate is low. Contents of the invention [0003] The purpose of the present invention is to solve the process problems such as bulky wax pattern, difficult turning over, easy cracking, falling off and damage wax pattern, etc., and especially provides a production process of a lost-wax precision casting valve body with a diameter of more than 8 inches. [0004] The present invention is achieved through the following technical solutions: [0005] 1. Wax type production: firstly make the 8-inch valve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/04
Inventor 陈德苏赵爱民
Owner 江苏万恒铸业有限公司
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