Sealing method

A technology of silicone rubber and negative mold, which is applied in the field of model processing, can solve the problems of difficult control of sealing and fastening force, low success rate of pouring model at one time, high casting cost, etc., and achieve the effects of small error, avoiding deformation and good sealing effect

Active Publication Date: 2013-09-04
CHINA AVIATION POWER MACHINE INST
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The purpose of the present invention is to provide a sealing method to solve the problem of poor pouring or large dimensional errors of the pouring model. The one-time success rate of the casting model is low, and multiple pours are often required to obtain a quali

Method used

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  • Sealing method

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Embodiment Construction

[0022] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

[0023] figure 1 It is a schematic flow sheet of the sealing method of the preferred embodiment of the present invention, as figure 1 As shown, the sealing method carries out the same material, the same equipment and the same process vacuum pouring method to the silicone rubber negative mold, and the sealing includes the following steps: (1), carrying out the silicone rubber negative mold on the manufacturing equipment of the silicone rubber negative mold Pretreatment; (2), using the manufacturing equipment of the silicone rubber negative mold to seal the silicone rubber negative mold; (3), the treatment after the silicone rubber negative mold is sealed. The same material, same pouring equipment and same pouring process are used for the silicone rub...

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Abstract

The invention discloses a sealing method, which seals a silicone rubber female die through a method of identical material, equipment and process vacuum casting. The sealing method comprises the following steps: (1), pretreating silicone rubber female die on manufacture equipment of the silicone rubber female die; (2), sealing the silicone rubber female die through the manufacture equipment of the silicone rubber female die; and (3), treating the sealed silicone rubber female die. The silicone rubber female die is subjected to identical material, casting equipment and casting equipment to realize the sealing of the silicone rubber female die subjected to die opening, additive deformation is hardly produced, the sealing effect is good, the method is convenient to operate, and large additive deformation is not produced to a model. Raw material which is the same with that of the silicone rubber female die is taken as sealing material, a sealing layer and the model can perfectly form a whole body, the leakage of casting fluid and deformation caused by high fastening force are avoided, the sealing success rate and the sealing quality are improved, the physical dimension of a photoelasticity model for female die casting is accurate, and the error is small.

Description

technical field [0001] The invention relates to the technical field of model processing, in particular to a photoelastic model sealing method. Background technique [0002] At present, the stress distribution of the test piece obtained by the photoelastic test is the main technical means used to evaluate the working stress in the product prototype design, and plays an important role in the strength analysis of product design. The object of the photoelasticity test is the photoelastic model. Most of the photoelastic models produced by the casting method of the prototype are not suitable for mechanical processing, and the vacuum casting method is usually used for casting. When casting the photoelastic model, the silicone rubber model is often used as the female mold. After the silicone rubber female mold is opened, it needs to be sealed and then the photoelastic model is poured. The quality of the seal directly affects the quality of the photoelastic model and the casting succ...

Claims

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Application Information

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IPC IPC(8): B29C39/26B29C39/42
Inventor 郭天才刘飞春夏清
Owner CHINA AVIATION POWER MACHINE INST
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