The manufacturing process of thermostatic faucets can be divided into sand casting, manual metal mold casting, gravity casting, or low-pressure casting.
Gravity casting refers to a process in which molten metal is injected into a mold under the action of the earth's gravity, also known as gravity casting. Generalized gravity casting includes sand casting, metal casting, investment casting, lost foam casting, mud casting, etc.; narrow gravity casting mainly refers to metal casting.
Low-pressure casting is a method of filling a cavity with liquid metal under pressure to form a casting. Because of the lower pressure used, it is called low-pressure casting. Low-pressure casting includes processes such as liquid lifting, mold filling, crusting (sand casting), pressurization, pressure holding (crystal solidification), and exhaust (pressure relief).
When turning the sand, first place the lower half of the mold on the flat plate, put the sandbox to fill the sand and level it, and after the lower mold is formed, turn the sand mold 180 degrees, put the upper half, sprinkle the parting agent, and put on the sand. Fill the sandbox, fill it with sand and flatten it, turn the upper sandbox 180 degrees, take out the upper and lower half molds, and then turn the upper mold 180 degrees and close the lower mold. After the sand mold is finished, wait for pouring.
Metal casting, commonly known as hard mold casting, is a process in which castings are made of metal materials, and molten metal is poured into the mold under gravity to obtain castings. Because a pair of metal molds can be poured hundreds to tens of thousands of times, metal mold casting is also called permanent mold casting. Metal mold casting is not only suitable for the mass production of non-ferrous alloy castings such as aluminum alloys and magnesium alloys with complex shapes, but also for the production of iron and steel metal castings and ingots.