01. What is die casting?

  Die casting, or pressure casting. Its characteristic is to use the inner cavity of the mold to apply high pressure to the molten metal. Molds are typically machined from stronger alloys, a process somewhat similar to injection molding.

02. The history of die-casting

  In 1838, in order to make molds for movable type printing, people invented die-casting equipment. In 1849, a patent was issued for die-casting, a small manual machine used to produce printing press type. In 1885, Otto Mergenthaler invented the Linotype typesetting machine, and the traditional hand-pressed lettering molds had been replaced by die-casting. As consumer products continued to grow, Otto's inventions found more and more applications. Die casting can be used to manufacture parts and components in large quantities. In 1966, General Dynamics invented the precision die-casting process, which is sometimes called dual-punch die-casting. Historically, the principle of a die-casting machine is to die-cast materials into a fixed shape, which is suitable for mass production, thereby improving efficiency and reducing costs.

03.The design principles of die castings are:

a. Correctly select the material of die castings;

b. Reasonably determine the dimensional accuracy of die castings;

c. Try to make the wall thickness evenly distributed;

d. Add craft corners at each corner to avoid sharp corners.

04. Die-casting process

  Traditional die-casting is also high-pressure die-casting. The steps include mold preparation, filling, injection and shakeout, which are the basis for various modified die casting processes.

05.Die casting instrutment

a. Hot chamber die casting machine: zinc alloy, magnesium alloy, etc.

b. Cold chamber die casting machine: zinc alloy, magnesium alloy, aluminum alloy, copper alloy, etc.

c. Vertical die casting machine: zinc, aluminum, copper, lead, tin

  The difference between a hot chamber and a cold chamber lies in whether the injection system of the die casting machine is immersed in the metal solution. Die casting machines can also be divided into horizontal and vertical types.

  Casting equipment and molds are expensive, so the die-casting process is generally only used to manufacture large quantities of products. It is relatively easy to manufacture die-cast parts, which generally require only four main steps and the individual cost increment is very low. Die casting is particularly suitable for manufacturing a large number of small and medium-sized castings, so die casting is the most widely used among various casting processes. Compared with other casting technologies, die casting has a flatter surface and higher dimensional consistency.