Sealing method

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...

AI Technical Summary

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 success rate of the casting model is low at one time, and it often takes multiple pours to obtain a qualified photoelastic model. The efficiency is low, and the pouring cost is high due to the large waste; the fastening force of the seal is not easy to control, and improper fastening force may easily lead to technical problems such as leakage or large additional deformation

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