Bearing Wujin casting segregation control device and control method

Abstract

The invention discloses a bearing white metal casting segregation control device. The bearing white metal casting segregation control device comprises a centrifugal casting machine which is provided with a rotating shaft and a chuck connected with the front end of the rotating shaft, a tile body, a front end cover provided with a pouring hole and connected with the front end of the tile body, a back end cover connected with the back end of the tile body and the front end of the chuck, an adjusting base arranged on the front side of the front end cover and provided with a white metal temperature sensor opposite to the pouring hole, a cooling water nozzle set arranged on the upper side of the periphery of the tile body, an adjustment base provided with a tile body temperature sensor oppositeto the outer side of the periphery of the tile body, a rotating shaft driving and speed adjusting device provided with a servo motor, and a controller electrically connected with the white metal temperature sensor, the tile body temperature sensor, an environmental temperature sensor and the servo motor. The bearing white metal casting segregation control device cannot enable CuSn5 and SnSb compounds with high densities in molten white metal to gather and segregate to the outer side of a lining layer in the centrifugal casting process, and improves the bonding force between the white metal and the tile body and the bearing capacity of a bearing.

Description

technical field [0001] The invention relates to the field of bearing manufacturing, in particular to a bearing black metal casting segregation control device and control method. Background technique [0002] The heavy-duty rotating rotors of nuclear power plants and large-scale thermal power / hydropower plants weigh tens to hundreds of tons, and their radial bearings are often high-load-bearing sliding bearings lined with Babbitt alloy (hereinafter referred to as Wujin); Wujin is mainly composed of antimony Combined with copper as a hardening element, tin and lead as a soft phase matrix, it has high strength, hardness, and good anti-friction properties; connecting the black gold and the tile body of the sliding bearing through centrifugal casting can improve the bonding force between the black gold and the tile body , to prevent defects such as pores and shrinkage in black gold castings; due to the different densities of antimony copper compounds and tin and lead matrices, du...

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Problems solved by technology

[0002] The heavy-duty rotating rotors of nuclear power plants and large-scale thermal power / hydropower plants weigh tens to hundreds of tons, and their radial bearings are often high-load-bearing sliding bearings lined with Babbitt alloy (hereinafter referred to as Wujin); Wujin is mainly composed of antimony Combined with copper as a hardening element, tin and lead as a soft phase matrix, it has high strength, hardness, and good anti-friction properties; connecting the black gold and the tile body of the sliding bearing through centrifugal casting can improve the bonding force between the black gold and the tile body , to prevent defects such as pores and shrinkage in black gold castings; due to the different densities of antimony copper compounds and tin and lead matrices, during the centrifugal casting process, the dense CuSn5 and SnSb compounds in molten black gold exist under the action of centrifugal force. The accumulation on the outside of the lining produces specific gravity segregation, which reduces the bonding force between the Ugin and the tile body and the lack of bearing capacity; therefore, it is necessary to design a centrifugal casting process that does not make the CuSn5 and SnSb compounds with high density in the molten Ugin flow into the lining. Agglomeration and segregation on the outside, a bearing segregation control device and control method for casting segregation to improve the bonding force between the urn and the tile body and the bearing capacity of the bearing, have become urgent problems to be solved

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