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.
Small make up today to tell you something about foundry casting metal casting and machining is introduced.
Is often used in foundry casting in the manufacture process of sand mold, the sand mould is the main sand on raw materials, and with the binder, water, etc.
Sand mold material must have a certain bond strength, in order to be shaped into the required shape and can resist high temperature molten iron scouring and won't collapse.
Foundry casting in order to make consistent shape within the sand mold and the shape of the casting cavity, when making use of must use wood model, when making use of known as the wooden hot molten iron after cooling will be smaller, therefore, the size of the block model needs to be on the basis of the original size according to the shrinkage in casting.
Corresponding thickening of foundry casting to machining surface, its hollow castings made from sand core and the corresponding core wood pattern, had the wood pattern, can double cavity mould.
In manufacturing sand mold, want to consider how sand box up and down to remove the wooden separately, also consider the molten iron from where flow, how to fill the cavity in order to get high quality castings.
After sand mold is made, can casting, and the molten iron is poured into the sand mold cavity.
When pouring, hot metal temperature in 1250 & ndash;
1350 degrees, melting temperature is higher.
Then pass desanding, repair, and grinding process, such as to become a qualified castings.
Above is about foundry casting metal casting and machining is introduced, the hope can help to you.
Today small make up to you at this point, let's see you next time.
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