Guangdong Stainless Steel CastingAlloy steel castings have a history of more than one hundred years. The industrial use of alloy steel was about the second half of the 19th century. At that time, because of the continuous increase in the production value and utilization of steel, the machinery manufacturing industry needed to deal with the processing and cutting of steel. In 1868, the British RFMushet invented a self-hardening steel with a clear composition of 2.5%Mn-7%W. Increase the cutting speed to 5 m/min. Following the development of commerce and transportation, a 158.5-meter span bridge was built on the Mississippi River using chromium steel (1.5-2.0% Cr) in the United States in 1870; because of difficulties in processing components, some industrial countries later switched to nickel steel. (3.5% Ni) to build long-span bridges. At the same time, some countries also use nickel steel to build warships. With the development of engineering technology, it is required to accelerate the rolling speed of machinery. In 1901, high-carbon chromium rolling bearing steel was presented in Western Europe. In 1910, an 18W-4Cr-1V high-speed tool steel was developed, which further increased the cutting speed to 30 m/min. It can be seen that the emergence and development of alloy steel are accustomed to the requirements of social productivity development, especially inseparable from the needs of machinery manufacturing, transportation and military industry.

From the 1920s onwards, because the electric arc furnace steelmaking method was popularized and used, it created favorable conditions for the production of many alloy steels. The development of the chemical industry and the power industry promoted the expansion of alloy steel types, so stainless steel and heat-resistant steel appeared during this period. In 1920, the German E. Maurer invented the 18-8 type stainless acid-resistant steel. In 1929, Fe-Cr-Al resistance wire was presented in the United States. By 1939, Germany began to use austenitic resistance in the power industry. Hot steel. From the Second World War to the 1960s, high-strength steel and ultra-high-strength steel were mainly developed. Due to the needs of the aviation industry and the development of rocket technology, many new high-strength steel and ultra-high-strength steel types were presented, such as Deposition hardening high-strength stainless steel and various low-alloy high-strength steels are its representative steel types. In the 1960s, many new metallurgical technologies, especially the refined technology outside the furnace, were widely adopted. Alloy steel castings began to develop in the direction of high purity, high precision and ultra-low carbon, and also presented maraging steel and ultra-pure ferrite. Body stainless steel and other new steel grades. There are thousands of alloy steel grades and tens of thousands of specifications used internationally. The output value of alloy steel accounts for about 10% of the total output value of steel.Dongguan Precision CastingIt is an important metal material used in many national economic construction and national defense construction.

Stainless steel precision casting or investment casting, silica sol process. It is a casting process with little or no cutting. It is an excellent process technology in the foundry industry. It has a wide range of applications and is not only suitable for various types and alloys.Dongguan Precision CastingMoreover, the dimensional accuracy and surface quality of the produced castings are higher than other casting methods. Even the complex, high-temperature resistant, and difficult-to-process castings that are difficult to cast by other casting methods can be cast by investment casting.