Introduction of different types of casting methods

Introduction of different types of casting methods

25 Jun 2021

Many people don't know what kinds of casting methods are. Below, I will introduce several casting processes for you.

(1) Sand casting

Sand casting: A casting method for producing castings in sand. Steel, iron and most non-ferrous alloy castings can be obtained by sand casting methods.

(2) Investment casting

Investment casting: usually refers to making a pattern made of fusible materials, covering the surface of the pattern with several layers of refractory materials to form a shell, and then melting the pattern out of the shell to obtain a mold without a parting surface. After high temperature baking Then, the casting program can be filled with sand and poured. Often referred to as "lost wax casting".

(3) Die casting

Die casting: It uses high pressure to press molten metal into a precision metal mold cavity at high speed. The molten metal is cooled and solidified under pressure to form a casting.

(4) Low pressure casting

Low pressure casting: refers to the method of filling the mold with liquid metal under lower pressure (0.02~0.06MPa) and crystallizing under pressure to form castings.

(5) Centrifugal casting

Centrifugal casting: is a casting method in which molten metal is poured into a rotating mold, and the mold is filled under the action of centrifugal force to solidify and shape.

(6) Gravity die casting

Metal mold casting: refers to a molding method in which liquid metal is filled with a metal mold under the action of gravity and cooled and solidified in the mold to obtain a casting.

(7) Vacuum die casting

Vacuum casting: An advanced die-casting process that eliminates or significantly reduces the pores and dissolved gases in the die-casting parts by removing the gas in the die-casting mold cavity during the die-casting process, thereby improving the mechanical properties and surface quality of the die-casting parts.

(8) Squeezing die casting

Squeeze casting: is a method of solidifying, flowing and forming liquid or semi-solid metal under high pressure to directly obtain parts or blanks. It has the advantages of high utilization rate of liquid metal, simplified process and stable quality. It is an energy-saving metal forming technology with potential application prospects.

(9) Lost foam casting (Lost foam casting)

Lost foam casting (also known as solid casting): It is to combine paraffin wax or foam models similar in size and shape to the castings to form clusters. After brushing and drying refractory coatings, they are buried in dry quartz sand for vibration modeling. It is a new type of casting method in which the mold is vaporized by pouring under pressure, and the liquid metal occupies the position of the mold.

Application: Continuous casting can be used to cast steel, iron, copper alloys, aluminum alloys, magnesium alloys and other long castings with constant cross-sectional shapes, such as ingots, slabs, billets, tubes, etc.