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Improvement method for centrifugal casting silicon tube

A technology of centrifugal casting and silicone tubes, which is applied in applications, household utensils, tubular objects, etc. It can solve the problems of poor precision of extrusion molding process, easy to produce waste products, long development cycle, etc., achieve low cost, solve the problem of demoulding, The effect of simple structure

Inactive Publication Date: 2013-04-24
UNIV OF SCI & TECH OF CHINA
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AI Technical Summary

Problems solved by technology

The compression molding process requires expensive molds, long development cycles, and is highly prone to scrap
The precision of the extrusion molding process is poor, and the product has obvious defects
Therefore, neither of these two methods is suitable for the manufacture of silicone tubes with different wall thicknesses

Method used

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  • Improvement method for centrifugal casting silicon tube
  • Improvement method for centrifugal casting silicon tube
  • Improvement method for centrifugal casting silicon tube

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Embodiment Construction

[0027] Such as figure 2 As shown, the main process steps of centrifugal casting of silica gel tube of the present invention are:

[0028] (1) Construction of the centrifugal casting device. The centrifugal casting device mainly includes motor 1, coupling 2, stainless steel precision tube 3 (for casting) and bearing 4, such as figure 1 As shown, the motor 1 drives the stainless steel precision tube 3 to rotate at high speed through the coupling 2. The outer diameter of the bearing 4 and the stainless steel precision tube 3 is interference fit, and its function is to reduce the frictional resistance between the stainless steel precision tube 3 and the shaft seat during high-speed rotation;

[0029] (2) Preparation of release agent. will be a certain amount (as long as the ratio of V 1 Soak gelatin in pure water for 5 hours (the mass ratio of gelatin to water is 1:7). After the gelatin fully absorbs the water and expands, place the container containing the gelatin in a water...

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Abstract

The invention relates to an improvement method for a centrifugal casting silicon tube. The improvement method for the centrifugal casting silicon tube comprises the steps of (1) constructing a centrifugal casting device comprising a motor, a coupler, a stainless steel precise tube for casting and molding and a bearing; (2) preparing a mold release, immersing granulous gelatin with certain quantity in purified water for 5 hours, putting a container for containing the gelatin into a water bath after the gelatin fully absorbs moisture and expands, and heating until the gelatin is dissolved completely; (3) pouring the mold release; (4) preparing an RTV (room temperature vulcanization) silicon solution; (5) pouring and curing the silicon solution, namely, pouring a certain amount of silicon mixed solution after volume defoaming into the stainless steel precise tube, and under room temperature, driving the stainless steel tube by the high-speed rotation of the motor until the mixed solution is cured; and (6) demolding, and taking out the molded silicon tube after the cured gelatin is dissolved at the temperature of 35 DEG C. According to the invention, the problem of demolding of silicon tube machining is solved well, and the required silicon tube is manufactured effectively.

Description

technical field [0001] The invention relates to an improved method for centrifugally casting silicone tubes, belonging to the technical field of silicone tube preparation. Background technique [0002] Due to the influence of the activity of biological tissues in vitro, silicone tubes with excellent elastic properties are usually used in laboratories to simulate blood vessels or trachea to study the flow problems inside them. [0003] Traditional rubber hose processing mostly adopts molding or extrusion molding technology, as introduced in Document 1---Luo Shoujing, Chen Bingguang, Qi Pixiang. Liquid die forging and extrusion forging technology. Beijing: Chemical Industry Press, 2006. The compression molding process requires expensive tooling, has long development cycles, and is highly prone to scrap. The precision of the extrusion molding process is poor, and the product has obvious defects. Therefore, neither of these two methods is suitable for the manufacture of silico...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C41/04B29L23/00
Inventor 吴海军贾来兵尹协振
Owner UNIV OF SCI & TECH OF CHINA
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