Precise casting and rapid molding method for multi-cavity automobile exhaust gas treatment system part and detection device for castings

A technology of automobile exhaust and treatment system, applied in casting molding equipment, mold components, cores, etc., can solve the problems of scrap casting, time-consuming, laborious and other problems, and achieve no blockage, accurate angle, and meet the requirements of samples and drawings. Effect

Inactive Publication Date: 2015-05-27
WENZHOU CHANGJIA VALVE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After time-consuming and labor-intensive work, as long as there is a little carelessness or a slight loophole in a certain detail in the process, it may cause all castings to be scrapped

Method used

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  • Precise casting and rapid molding method for multi-cavity automobile exhaust gas treatment system part and detection device for castings
  • Precise casting and rapid molding method for multi-cavity automobile exhaust gas treatment system part and detection device for castings
  • Precise casting and rapid molding method for multi-cavity automobile exhaust gas treatment system part and detection device for castings

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Experimental program
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Embodiment Construction

[0024] The present invention discloses a method for precision casting and rapid prototyping of automobile exhaust treatment system components with multi-cavity structure, comprising:

[0025] 1. Model making

[0026] a. The wax-type mold of the main shell is made. The gate of the wax-type mold of the main shell is designed as a top casting process. Area=(1.1-1.2):(1.25-1.35):1; A centrifugal hot top riser is added between the cross gate and the inner gate to facilitate feeding and scum during pouring. The ratio of the section modulus is (1.3-1.8): 1. The inner runner is cylindrical or square, with a length of 3-5mm. The hot top riser is connected with the horizontal gate and the vertical gate. The gate enters the riser along the tangential direction, while the inner gate communicates with the cavity along the bottom surface of the riser; the wax pattern combination is designed as two rows of four groups, that is, four wax patterns. The gate is designed to be upward and obliq...

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Abstract

The invention discloses a precise casting and rapid molding method for a multi-cavity automobile exhaust gas treatment system part. The method comprises the following steps: step one, making a mould; step two, making a shell; step three, de-waxing; step four, baking, smelting and pouring the shell; step five, post-treating; and step six, testing. The requirements of samples and blueprints can be met. The invention further provides a detection device used in the precise casting and rapid molding method. A wax-type cavity processed and molded according to the precise casting and rapid molding method for parts of the multi-cavity automobile exhaust gas treatment system of the invention has smooth and neat interior and is free of blockage; at the same time, the wax pieces are more precise in sizes and the cavities are more accurate in sizes and angles. Furthermore, the detection device used in the method is much lower in manufacturing and material costs when compared with a three-dimensional positioning detector in the market, and the detection device is capable of rapidly performing three-dimensional positioning detections on castings of multi-cavity structural parts.

Description

technical field [0001] The invention relates to a rapid prototyping method for precision casting of parts of an automobile tail gas treatment system with a multi-cavity structure. The invention also relates to a detection device for castings produced by the above method. Background technique [0002] At present, there are many equipment and machinery in the automotive field and aerospace field that are not on the same plane, with multiple cavities, multiple structures, and wall thickness layers that vary according to different parts. These spare parts are basically made of silica sol precision casting. Due to the diversification and irregularity of their structures, and the structural parameters, angles and other precision requirements of these parts are very high. Therefore, the modeling and subsequent inspection of silica sol precision casting And other links bring a lot of work intensity and extremely demanding process requirements. After consuming time and effort, as l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/04B22C9/24B22C23/00
CPCB22C9/043B22C9/24B22C23/00
Inventor 周孙良陈彬魏大明金双权
Owner WENZHOU CHANGJIA VALVE CO LTD
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