Technology of utilizing liquid-solid rolling cladding method to prepare bimetallic bearing

Abstract

The invention discloses a technology of utilizing a liquid-solid rolling cladding method to prepare a bimetallic bearing. According to the technical scheme, the technology comprises the following steps: adopting the liquid-solid rolling cladding method combining a casting method with a composite method; directly pouring zinc-based aluminum alloy molten metal to a base metal; cooling, solidifying and rolling by water cooled rolls to produce a composite board without larger plastic deformation. The technology disclosed by the invention has the characteristics as follows: the bimetallic bearing alloy prepared by the technology is excellent in compression resistance, tension resistance, mechanical property, friction performance, high-temperature stability performance and casting property; meanwhile, the liquid-solid rolling cladding method is a near net-shape processing method organically combining the hot dip aluminum plating with aluminum alloy cast rolling, so that the method is high in combined strength, low in production cost, less in equipment investment, high in production efficiency, low in energy consumption and high in composite board binding strength, and further has a good market prospect.

Description

technical field

[0001] The invention discloses a process for preparing a bimetallic bearing by a liquid-solid phase rolling composite method. Background technique

[0002] Sliding bearings are one of the most important parts of machinery and equipment, bearing both the pressure of the journal and the friction and impact of its shaft. Therefore, the quality of the bearing directly affects the precision and life of the machine equipment. To ensure the working life of the bearing, it is very important to optimize the selection of bearing materials suitable for the working conditions of the bearing. With the continuous development of industrial production, the requirements for bearing alloys are getting higher and higher, and various mechanical equipment have different requirements for bearing performance. Although people have developed many types of bearing alloys to meet or meet their use requirements Material, but all can not find a kind of all-purpose material that all can...

Examples

Embodiment Construction

[0008] A process for preparing bimetallic bearings by a liquid-solid phase rolling composite method, which is characterized in that: the liquid-solid phase rolling composite method is a combination of a casting method and a composite method, and it directly pours molten metal of zinc-based aluminum alloy into the base metal In general, the composite plate is produced through the cooling, solidification and rolling action of the water-cooled roll without large plastic deformation.

[0009] The chemical composition (mass fraction) of zinc-based aluminum alloy is: aluminum 20%, copper 2%~6%, zinc as the balance.

[0010] Specific process: The steel strip is first pickled and alkali washed to remove rust and oil, and then polished by a wire brush to form a hill-shaped and easily broken surface hardened layer. After coating the flux, it is dried and heated by high-frequency induction equipment to At 600℃, contact with the smelted aluminum alloy melt at the gate, pass through water-...

technical field

[0001] The invention discloses a process for preparing a bimetallic bearing by a liquid-solid phase rolling composite method. Background technique

[0002] Sliding bearings are one of the most important parts of machinery and equipment, bearing both the pressure of the journal and the friction and impact of its shaft. Therefore, the quality of the bearing directly affects the precision and life of the machine equipment. To ensure the working life of the bearing, it is very important to optimize the selection of bearing materials suitable for the working conditions of the bearing. With the continuous development of industrial production, the requirements for bearing alloys are getting higher and higher, and various mechanical equipment have different requirements for bearing performance. Although people have developed many types of bearing alloys to meet or meet their use requirements Material, but all can not find a kind of all-purpose material that all can...

Examples

Embodiment Construction

[0008] A process for preparing bimetallic bearings by a liquid-solid phase rolling composite method, which is characterized in that: the liquid-solid phase rolling composite method is a combination of a casting method and a composite method, and it directly pours molten metal of zinc-based aluminum alloy into the base metal In general, the composite plate is produced through the cooling, solidification and rolling action of the water-cooled roll without large plastic deformation.

[0009] The chemical composition (mass fraction) of zinc-based aluminum alloy is: aluminum 20%, copper 2%~6%, zinc as the balance.

[0010] Specific process: The steel strip is first pickled and alkali washed to remove rust and oil, and then polished by a wire brush to form a hill-shaped and easily broken surface hardened layer. After coating the flux, it is dried and heated by high-frequency induction equipment to At 600℃, contact with the smelted aluminum alloy melt at the gate, pass through water-...