Wood is made of wood and iron were not to burn? Strangely enough, how can you use it many times?. What a miracle!
The sand mold is mainly made of sand and mixed with binder and water. The sand mold material must have a certain bond strength so as to be molded into the desired shape and resist the erosion of high temperature molten iron without collapse.
In order to make the mold plastic into a cavity is consistent with the shape of the casting, must be made of wood model, called wood, in the manufacture of sand, sand box on how to separate the wood removed after in the cavity to the sand filling iron manufacturing, so the wood can be used repeatedly, in other words, don't touch the metal liquid wood!
Castings are based on the requirements of the pattern, first produced a qualified wood type, and then use this wooden shape, cast intoThe foundry is molten metal pouring into the mold cavity, and obtained the production method of the product after cooling solidificationCast iron parts are usually made of sand molds.
