ings' target='_blank'>casting, refers to the use of clay bonded sand for casting, molding materials production is the process method has a long history, is also the most widely application scope.
With a long history dating back to thousands of years ago;
Its application scope, can be said that there is no place not all over the world.
Small make up today to tell you something about foundry core of casting sand mold casting, cleaning, what are the requirements.
Foundry casting in the process of making the first step is drawing, when making use of the traditional method is effective to obtain the casting drawings and the drawings sent to the foundry, such a process can be completed in the quotation, now more and more customers and foundry manufacturers use computer aided design to replace.
The mould in foundry casting using wood or other metal materials, in this process, we ask our engineer, make the mould size slightly larger than the finished product, the difference is called the shrinkage allowance.
The purpose is to molten metal mold role to ensure that the molten metal solidification and contraction, thus preventing the hole in the casting process.
Foundry casting for core making process, you just need to put the resin sand mould, to some extent, this will form the internal surface of the casting, so will eventually become the gap between the core and die casting, molding in the process of smelting molding need to prepare a pair of mold.
Usually involves mold molding supporting frame, pull out of the mould in the casting process of separation, in the previously placed core melt and then close the mold in the mold.
Foundry casting in the process of cleaning, its main purpose is to remove sand, polished and excess metal castings.
Welding, with the exception of sand can improve casting surface appearance was burned down sandy soil and scale are removed, to improve the surface appearance of the casting.
Heavy metal and other riser was clear.
Further welding and polishing the steps again.
Finally check the defects and the comprehensive quality.
Foundry casting finishing, before shipment, and processing.
According to the requirements of different customers we can do it again for the heat treatment, surface treatment, additional checks, etc.
The above is the core of foundry casting, cleaning, sorting requirements, hope can help you.
Today small make up to you at this point, let's see you next time.
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