Heavy-duty copper-steel composite bimetal plate, using copper alloy rich in rare metals, aluminum, nickel, manganese, titanium as the bearing working surface, the base steel is high-quality steel Q235, and the copper alloy (composite material) is made by high-temperature cladding method. Products that are metallurgically bonded to steel (substrate). The composite processing process is short, the equipment is simple, the environmental requirements are low, no pollution, environmental protection and green, replacing the sand mold and centrifugal casting complex process of the transfer gun. The high-temperature cladding method can facilitate the processing of copper-steel composite bimetallic plates with different copper layer thicknesses and steel layer thicknesses. The average level, the copper-steel junction is firmly bonded. Rare earth elements are added to the copper melt, and the rare earth can have a strong ability to remove oxygen and sulfur in the copper alloy melt, so that the copper melt can be purified. At the same time, the addition of rare earth can also reduce the surface crack defects and refine the grains of the copper alloy plate during the casting process. As a result, various properties of the copper alloy plate are greatly improved and improved, that is, the addition of rare earths greatly improves the tensile strength and wear resistance of the copper alloy plate. 

The copper-steel composite bimetallic plate for bearings is the first in China, and it is also the first in the application of domestic and international sugar press equipment. It is an upgraded product of traditional industrial products and technological upgrading, and is indispensable for the technological transformation of domestic sugar-making secondary entrepreneurship equipment. product and technical support. The bearing strength of the copper-steel composite bimetal bearing is 2-3 times larger than that of the traditional copper alloy bearing, and the wear resistance is 5-6 times larger. The copper alloy bearing bush is 3.74mm, with high wear resistance and high performance. The industry standard "Copper-steel clad bimetallic plates for bearings" presided over and compiled by the National Nonferrous Metals Standardization Technical Committee has passed the expert review meeting. The experts have confirmed that the standard fills the standard of copper-steel clad bimetallic plates for bearings in my country. Blank, the technical level has reached the domestic advanced level, the standard number: YS/T 1349-2020.
The copper-steel composite bimetallic plate for bearings can not only be used in the sugar industry, but also be applied to machinery and equipment materials in steel, mining, military, cement, paper, wind power, shipbuilding and other industries. The bearing products of domestic sugar-related enterprises are all transformed and replaced, and the market value of copper-steel composite bimetal bearings has reached 2 billion yuan. The bearing products of sugar-making enterprises in Southeast Asian countries have the same process as my country's sugar-making process, and the market value of copper-steel composite bimetal bearings has reached 800 million yuan. Yuan, the market value of copper-steel composite bimetallic bearings used in the cement industry reached 700 million yuan, and the market value of copper-steel composite bimetallic bearings used in the shipbuilding industry reached 1.1 billion yuan. It is expected that copper-steel composite bimetallic bearings will be applied to steel, mining, military, cement , papermaking, wind power, shipbuilding and other industries, the national annual market value of copper-steel composite bimetallic plates for bearings is as high as 6 billion yuan.

Product key technologies and innovations:

(1) The new material, rare earth copper alloy ZCuAl9Ni4Mn2, has been developed. The new material has excellent mechanical properties and process properties. The addition of rare earth can reduce the surface crack defects of copper alloy sheets during the casting process, and at the same time refine the grains. The tensile strength and wear resistance of the plate have been greatly improved.  

(2) The method of high temperature cladding is used to make the rare earth copper alloy material and the steel (substrate) to achieve metallurgical combination, and the rare earth copper steel composite bimetallic plate has been developed, with a large thickness copper layer (10-50mm) and a short composite processing process. , Low environmental requirements, no pollution, green and environmental protection. The tensile strength Rm is not less than 500 MPa (the composite layer does not crack after breaking), the elongation A after breaking is not less than 14%, and the composite layer does not crack in the 90° internal bending test.