Mould material module hot water dewaxing method for wax mould precision casting process

Abstract

The invention discloses a mould material module hot water dewaxing method for a wax mould precision casting process, belonging to the field of mould manufacture. The hot water dewaxing method comprises the following steps of: A) preparing dewaxing solution, wherein the dewaxing solution is mixed liquid of water and ammonium chloride (NH4Cl); B) storing a mould material module at room temperature; and C) putting the mould material module into the dewaxing solution for dewaxing. By adopting the method, wax and alkaline matter sodium silicate in the wax mould module can be effectively removed and the wax mould is not damaged.

Description

technical field [0001] The invention discloses a hot water dewaxing method for a mold material module suitable for a wax mold precision casting process, and belongs to the field of mold manufacturing. Especially for the dewaxing of molding material modules. Background technique [0002] In the field of investment casting, the use of wax as raw material is more and more widely used, but in the actual use process, because the shell of sodium silicate needs to be used when the wax mold is formed, how to timely assemble the wax mold Implementing effective dewaxing and removing sodium silicate is a very difficult problem. [0003] Then there was an invention titled as a wax mold molding process for integral castings, the patent number is CN201110164002.0, the application date was June 17, 2011, and the disclosure date was a patented technical solution on November 23, 2011. In the fifth step of the patented technology, the method of dewaxing is required. The technical solution i...

AI Technical Summary

Problems solved by technology

In the fifth step of the patented technology, the method of dewaxing is required. The technical solution is: put the cast wax mold that has been sanded twice into the dewaxing water pool for dewaxing treatment, and high-temperature steam is introduced into the dewaxing water pool Keep the water temperature at 90°C-98°C, soak the casting wax mold for 35-45 minutes and then take it out to obtain an aluminum sand mold; although the above-mentioned patented technical scheme can remove part of the wax, this method adopts the method of heating water to remove the wax. Therefore, nothing can be done about the sodium silicate in the wax pattern module, and then, the purpose of dewaxing cannot be effectively achieved