HY introduces you to the casting process

Die casting

It is a metal casting process characterized by applying high pressure to molten metal using a mold cavity, usually machined from a stronger alloy.

Sand mold casting

Sand mold casting requires placing a finished part model or wooden model (pattern) in the sand, and then filling the sand around the pattern. After the pattern is taken out of the box, the sand will form a casting mold. In order to take out the model before pouring the metal, the casting mold should be made into two or more parts; during the mold making process, holes and vents for pouring metal into the mold must be left to form a pouring system. After the metal liquid is poured into the mold, it is kept for an appropriate period of time until the metal solidifies. After the parts were removed, the molds were destroyed, so new molds had to be made for each casting.

Investment casting

Also known as lost wax casting, it includes processes such as pressing wax, trimming wax, forming trees, dipping slurry, melting wax, pouring molten metal and post-processing. Lost wax casting uses wax to make a wax pattern of the part to be cast, and then coats the wax pattern with mud, which is the clay mold. After the clay mold is dried, it is fired into a pottery mold. Once fired, all the wax mold melts and disappears, leaving only the pottery mold. Generally, the pouring port is left when making the mud mold, and then the molten metal is poured into the pouring port. After cooling, the required parts are made.

Die forging

It is a forging method that uses a die to form a blank on a special die forging equipment to obtain a forging. According to different equipment, die forging is divided into hammer die forging, crank press die forging, flat forging machine die forging, friction press die forging, etc. Under the action of a pair of counter-rotating dies, plastic deformation occurs to obtain the required forgings. It is a special form of forming rolling (longitudinal rolling).

Forging

It is a processing method that uses forging machinery to exert pressure on metal blanks to cause plastic deformation to obtain forgings with certain mechanical properties, shapes and sizes. It is one of the two major components of forging (forging and stamping). Forging can eliminate defects such as loose as-cast metal produced during the smelting process and optimize the microstructure. At the same time, due to the preservation of complete metal streamlines, the mechanical properties of forgings are generally better than castings of the same material. Important parts in related machinery with high loads and severe working conditions mostly use forgings, except for simple shapes that can be rolled plates, profiles or welded parts.