High-finish-degree antibacterial stainless steel pump valve casting and manufacturing method thereof

Abstract

The invention discloses a high-finish-degree antibacterial stainless steel pump valve casting. According to the stainless steel pump valve casting, the use amount of elements such as Cu, Zr and Ag is properly increased on the basis that low-carbon steel has good toughness and plasticity, good casting mold forming performance is given to a stainless steel casting material, the hardness and toughness are achieved, corrosion resistance is extremely excellent, the certain antibacterial property is achieved, the situation that the surface of the material breeds bacteria and consequently use is affected can be prevented, crystal nucleuses can be refined effectively through the added rare earth element, the surface quality of the casting is improved, shrinkage cavities are reduced, and a high-finish-degree material is obtained; and the deoxygenation and impurity removal effects are achieved through a composite refining agent of nanometer Ca-RE intermediate phase alloy powder loaded by honeycomb ceramic powder and graphene, the slagging speed is high, efficiency is high, the degree of purity of molten steel can be increased effectively, the performance of stainless steel heat-treated multiple times is stable, and the energy-saving and efficient production effects of products are achieved.

Description

technical field [0001] The invention relates to the technical field of stainless steel castings, in particular to a high-gloss antibacterial stainless steel pump valve casting and a preparation method thereof. Background technique [0002] Stainless steel pumps and valves are widely used in chemical, petrochemical, petroleum, papermaking, mining, electric power, liquefied gas, food, pharmaceutical, water supply and drainage, municipal, mechanical equipment, electronic industry, urban construction and other fields. The pump is a component that transports various media, and the valve is a control component in the pipeline fluid delivery system. It is used to change the passage section and the flow direction of the medium. Functions such as overflow and pressure relief, the two are often used together. [0003] Since stainless steel pumps and valves are exposed to a variety of media, which may be water, steam, oil, gas, mud, various corrosive media, liquid metal and radioactiv...

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Problems solved by technology

[0003] Since stainless steel pumps and valves are exposed to a variety of media, such as water, steam, oil, gas, mud, various corrosive media, liquid metal and radioactive fluids, etc., the performance requirements for pump and valve materials are relatively high. At present, the properties of pump and valve alloy steel on the market are uneven, which is far from meeting the production demand. It is urgent to start from the process and formula to obtain more high-quality and efficient stainless steel materials.