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一、推力盘破坏情况简介潜水电泵示意图见图1。当电机启动初期允许水泵叶轮瞬时(几秒)上漂。上浮力使推力盘与上轴承摩擦,电泵正常运转后便脱离这种摩擦。推力盘用材为4Cr13,淬火加低温回火后使用,硬度控制在HRC52～56,尺寸为φ310×35mm,推力盘中心有轴孔并有键槽。该断裂失效推力盘与上轴承接触的水平面严重磨损,划痕严重,并有黑色附着物(是石墨轴承磨损物),氧化色严重,说明摩擦力大、温度高。磨损面有许多径向辐射裂纹,个别处有沿半径长度沿推力盘厚度的通
First, the thrust plate damage Brief introduction Submersible pump schematic shown in Figure 1. Allow the pump impeller to float momentarily (a few seconds) when the motor starts up. The buoyancy force makes the thrust plate friction with the upper bearing, and the electric pump is free from such friction after normal operation. Thrust disk material 4Cr13, quenching and tempering after use, hardness control HRC52 ~ 56, size φ310 × 35mm, the thrust plate center shaft hole and a keyway. The rupture failure of the thrust plate and the bearing contact with the surface of the serious wear and tear, serious scratches, and black attachment (graphite bearing wear), the color of the oxidation, indicating that friction, high temperature. Wear surface has many radial radiation cracks, somewhere along the length of the radial thickness of the thrust plate through