Brief history of die casting machine development

There are different opinions on the origin of die casting, but according to literature reports, it was first used for die casting movable type. As early as 1822, William? Dr Qiao Qi once built a casting machine with a daily output of 1.2 ~ 20000, which has shown the production potential of this technology. 1849, J.J.Sturgiss designed and manufactured the first manual piston hot chamber die casting machine, and obtained the patent right in the United States. 1885, Melson Taylor studied the previous patents and invented the printing die casting machine. At first, it was only used to produce low-melting-point lead and tin alloy castings. In the 1960s, it was used to produce zinc alloy die castings in 19. Die casting was widely used in industrial production at the beginning of last century, which was used to produce cash registers, phonographs and bicycles. 1904, British H.H. Franklin Company began to produce connecting rod bearings for automobiles by die casting, which pioneered the application of die casting parts in automobile industry. During the period of 1905, H.H.Doehler successfully developed die casting machines and zinc, tin and copper alloy castings for industrial production. Then Wagner designed a gooseneck pneumatic die casting machine to produce aluminum alloy castings.

Czech engineer Joseph? Jesef Pfolak designed a cold chamber die casting machine. Because the crucible for storing molten alloy is separated from the injection chamber, the injection force can be significantly improved, which makes it more suitable for industrial production and overcomes the shortcomings of the air pressure hot chamber die casting machine, thus making the die casting technology take a big step forward. Aluminum, magnesium, copper and other alloys can be produced by die casting. Because the whole 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 are put forward for die-casting equipment. The emergence of new die-casting machines and the adoption of new processes and technologies have promoted the faster development of die-casting production. For example, in order to eliminate porosity, shrinkage cavity and porosity in die casting and improve casting quality, double punch (or precision, speed and density) die casting appeared; In order to die-cast castings with inserts and realize vacuum die-casting, a fully vertical die-casting machine with horizontal parting appeared. In order to improve the injection speed and instantaneous injection force, so as to effectively pressurize the molten alloy and improve the density of castings, a die casting machine with three-stage injection system was developed. For another example, in the process of die casting production, in addition to automatic pouring, automatic parts taking and automatic lubrication mechanism, a whole set of testing instruments are installed to test and control the process parameters in the die casting process. They are the display and monitoring device of injection force and injection speed, the automatic control device of molding force and the application of computer.

In recent 40 years, with the progress of science and technology and industrial production, especially with the development of automobiles, motorcycles and household appliances, die casting technology has made extremely rapid development in terms of energy saving and raw material saving. Die casting production not only plays a leading role in nonferrous alloy casting, but also has become an important part of modern industry. In recent years, some countries rely on technological progress to make castings thinner and lighter, which leads to the change from the concept of evaluating a country's casting technology development level by casting output to the important basis of measuring a country's casting level by technological progress level. For example, the better brands of die casting machines in China are "Lijin", "Zhi Yi Mi" and "Baoyang". ...