A method of using water -soluble wax to make hollow wax molds

Abstract

The invention discloses a method for preparing a hollow wax mold by utilization of water-soluble wax, and relates to the technical field of dewaxing casting. The method comprises the following steps: first, a water-soluble wax core original mold is prepared; second, a water-soluble wax core mold is prepared; third, sample testing of the water-soluble wax core mold is carried out; fourth, a water-soluble wax core is prepared; fifth, a wax mold is prepared; sixth, melting of the water-soluble wax core is carried out, and therefore a hollow wax mold is obtained. The beneficial effects of the method are that, the method solves the technical problem that all-around hollowing cannot be achieved when a special-shaped hollow workpiece is prepared in the traditional wax casting technology; all-around hollowing is achieved by utilization of water soluble wax, workpiece weight is lowered, the wall thickness of the prepared hollow wax mold is uniform, and the yield is raised.

Description

【Technical field】 [0001] The invention relates to a lost-wax casting technology, more specifically, the invention relates to a method for making special-shaped hollow workpieces by using water-soluble wax. 【Background technique】 [0002] Modern lost wax casting is the main means of jewelry production at present. Lost wax casting is essentially precision casting in mechanical processing methods. The application of precision casting to mass production of jewelry is a prominent feature of the jewelry manufacturing industry. Lost wax casting in jewelry manufacturing It can meet the needs of mass production, and can also take into account the change of style or variety, so it occupies an important position in the production mode of jewelry manufacturing industry. The casting methods of lost wax casting include vacuum casting, centrifugal casting, vacuum pressure casting and vacuum centrifugal casting. Casting, etc., is currently the main means of mass production in the jewelry ma...

AI Technical Summary

Problems solved by technology

[0003] When the lost wax casting technology is used to produce special-shaped hollow workpieces, the silicone hanging mold technology is generally used. The silicone hanging mold technology first makes a silicone mold, then pours the melted wax into the silicone mold, and manually turns the silicone mold to make the wax adhere. On the silicone mold, the hollow wax mold can be obtained after the wax liquid is solidified; the hollow wax mold made by this manufacturing method has defects such as uneven wall thickness and small patterns cannot be reflected, and it is still impossible to achieve all-round hollowness. , leading to an increase in the weight of the workpiece and an increase in waste products in the subsequent production process, resulting in an increase in cost; in addition, due to the uneven thickness of the wax mold, the thickness of the workpiece cannot be made uniform, so that the shrinkage of the workpiece is serious, especially for large workpieces, the shrinkage rate reaches 5%. -8%, and is not yet ready for production at scale

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