Vacuum casting process method of photoelastic model

Abstract

The invention relates to a vacuum casting process method of a photoelastic model. A vacuum casting forming machine and a silicon rubber female mold arranged in the vacuum casting forming machine are used for casting forming, the automation degree is high, the errors are few, and in addition, the harm to human bodies by harmful gas released in the casting process because of artificial participation is avoided. The process comprises the following steps that: step 1, epoxy resin 128 and succnic acid are respectively weighed according to the weight proportion being 100:30-35 in accordance with the photoelastic model to be cast, in addition, the epoxy resin 128 and the succnic acid are uniformly mixed under the vacuum condition of a vacuum stirring temperature control room, the purity of raw materials is improved, and the nonuniformity of materials is avoided; step 2, after a forming chamber of the model is subjected to vacuum pumping, the poxy resin 128 and the succnic acid uniformly mixed in the step 1 are filled into the silicon rubber female mold, and the casting forming is carried out; and step 3, the photoelastic model after the cast forming is solidified.

Description

technical field [0001] The invention relates to the field of casting molding of plastic models, in particular to a vacuum casting process method for photoelastic models. Background technique [0002] The traditional photoelastic model casting process requires multiple manual participation, and the harmful gas discharged during the heating and stirring process will cause harm to the human body. In addition, the traditional photoelastic model casting process is more suitable for casting ordinary plastic models. When the traditional photoelastic model casting process is used to cast the photoelastic model for photoelastic experiments, there are "clouds" (referring to the material of the material) in the model. In the dark field of the photoelastic instrument, the phenomenon of irregular "cloud-like" bright lines) appears when rubbing, and severe "clouds" will affect the optical performance of the photoelastic model. Moreover, the photoelastic model casted by the traditional ph...

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Problems solved by technology

[0003] The object of the present invention is to provide a vacuum pouring process for a photoelastic model with a high degree of automation, no damage to the human body during the pouring process, and good casting quality, so as to solve the problem that the traditional photoelastic model casting process will cause damage to the human body and affect the photoelasticity. Technical issues of optical and mechanical properties of the model

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