Adhesive wax for investment casting

Abstract

The invention provides an adhesive wax for investment casting. The adhesive wax is prepared from, by weight, 30-60% of polyolefin, 30-60% of hydrogenated petroleum resin, 1-10% of paraffin, 1-15% of Fischer-Tropsch wax, 1-5% of beewax and 0-1% of an antioxidant. The adhesive wax for investment casting does not smoke at the application temperature of 140 DEG C, no irritating odor is generated, andthe adhesive wax is environmentally friendly and efficient; the adhesive strength is high, and a die set cannot fall down in the storage and transportation processes.

Description

technical field [0001] The invention relates to the field of industrial waxes, in particular to an adhesive wax for investment casting. Background technique [0002] Investment casting, also known as "lost wax casting", is usually to coat several layers of refractory material on the surface of the wax mold, and then make a shell after it is hardened and dried, then put the shell into a steam generator, and the water vapor will A method in which the wax pattern is melted and flowed out, then fired at a high temperature, and finally poured into the shell to obtain a casting. Castings obtained by the investment casting process have high dimensional accuracy and surface finish. [0003] The injected wax model needs to be assembled to enter the next shell-making process. The investment model is to combine the wax model that forms the casting and the wax model that forms the gating system to form a module. There are two main methods: 1. Welding method: Melt the inner gate of the...

AI Technical Summary

Problems solved by technology

[0008] The use temperature of the bonding wax for investment casting is relatively high, generally around 140°C. The bonding wax with rosin and its modified rosin as the base material will smoke at the use temperature, and the rosin emits an unpleasant smell. The environment of the operating room, and has a certain impact on human health