1. Die-casting machine is a series of industrial casting machines that hydraulically inject non-ferrous metals into a mold under pressure to cool and form, and then obtain solid metal castings after the mold is opened. It was originally used for die-casting type. With the progress of science and technology and industrial production, especially with the development of industries such as automobiles, motorcycles, and household appliances, die-casting technology has achieved extremely rapid development.
2. There are different opinions on the origin of die casting, but according to literature reports in 1905, H.H. Doehler successfully developed die-casting machines, die-cast zinc, tin, and copper alloy castings for industrial production. Wagner then designed a gooseneck pneumatic die casting machine for the production of aluminum alloy castings.
3. Czech engineer Jesef Pfolak designed a cold press chamber die casting machine. Since the crucible for storing molten alloy is separated from the injection chamber, it can significantly increase the injection force and make it more suitable for industrial production. Therefore, the die-casting technology has taken a big step forward. Aluminum, magnesium, copper and other alloys can all be produced by die casting. Since the entire die-casting process is completed on the die-casting machine, with the demand for the quality, output and expanded application of die-casting parts, new and higher requirements have been put forward on die-casting equipment, and the emergence of new die-casting machines and new processes The adoption of new technologies has promoted the more rapid development of die-casting production. For example, in order to eliminate pores, shrinkage holes, and shrinkage porosity in die castings and improve the quality of castings, double punch (or precision, speed, and density) die casting has appeared; in order to increase the injection speed and achieve an instantaneous increase in the injection force for The molten alloy was effectively pressurized to increase the density of the casting, and a die-casting machine with a four-stage injection system was developed. For another example, in the die-casting production process, in addition to the equipment for automatic pouring, automatic pick-up and automatic lubrication, a complete set of test instruments is also installed to detect and control various process parameters during the die-casting process. They are the display and monitoring device of injection force and injection speed, the automatic control device of combined force and the application of electronic computer.
4. In the past 40 years, with the progress of science and technology and industrial production, especially with the development of industries such as automobiles, motorcycles, and household appliances, as well as energy conservation and raw material saving, die-casting technology has gained extreme Rapid development. Die-casting production not only occupies a leading position in non-ferrous alloy casting, but also has become an important part of modern industry. In recent years, some countries have relied on technological progress to promote thinner and lighter castings. As a result, the concept of using casting output to evaluate the development of a country's casting technology has changed to using the level of technological progress as an important basis for measuring a country's casting level.
