Introduction of Common Casting Process
water glass sand casting
Sand casting crusher wear-resistant parts are still very common in the local area, such as jaw plate, high chromium plate hammer, crushing wall, rolling mortar wall, etc., because in crusher equipment, as a relatively large wear-resistant casting, the accuracy is relatively not very high, especially for jaw plate, the finished products hardly need lathe grinding, and the crushing wall, rolling mortar wall, roller skin, etc. are only parts of the casting that need lathe grinding, therefore, it is especially suitable for sand casting, because the wear-resistant parts of the crushing equipment such as sand casting jaw plate, high chromium plate hammer, crushing wall, rolling mortar wall, roller skin, etc. are more than 20% more durable than other products such as lost foam casting process.
lost foam casting
Lost foam casting "is also known as" gasification mold modeling "," foam polystyrene plastic mold casting "," solid casting "or" cavity-free casting. The essence of this casting method is to use foamed polystyrene plastic instead of ordinary patterns. After the patterns are made, molten metal is poured into the mold without taking out the patterns. Under the thermal action of hot liquid metal, the foamed plastic mold vaporizes, burns and disappears. The molten metal replaces the space occupied by the original foamed plastic mold, and the required casting can be obtained after cooling and solidification.
V method casting
V method casting and lost foam casting, also known as negative pressure casting, is named after the English vacuum (vacuum) word "V. It is different from the traditional sand casting in that no adhesive is used. Method V casting uses a plastic film to seal the sand box, and the air in the mold is pumped out by a vacuum suction system. There is a pressure difference between the inside and outside of the mold, so that the dry sand is compacted to form the required mold cavity. The casting is solidified through the lower core, the box is closed and the pouring is vacuumed to remove the negative pressure, and the sand is collapsed to obtain the casting.
resin sand casting
Resin sand castings are collectively referred to as molding sand and core sand that has been coated with a layer of solid resin film on the surface of sand grains before molding and core making, which is called coated sand, also known as shell (core) sand. Resin sand casting is to mix the original sand and resin to form resin sand, the resin sand into the mold cavity, through heating or catalyst method to make its molding, molding the core of the mud and then put into the casting mold for casting. Resin sand castings have the characteristics of small surface roughness, high dimensional accuracy and good quality.