Surface treatment process for anti-seizure side plate

Abstract

The invention discloses a surface treatment process for an anti-seizure side plate. The surface treatment process comprises the following steps: a, performing one steam treatment on a side plate blank; b, removing burrs; c, performing secondary steam treatment, and thus forming Fe3O4 by using water in the air and iron, wherein the steam temperature is controlled at 550-570 DEG C, and generated Fe3O4 molecular crystals compactly adhere to an iron substrate to form a Fe3O4 protection film. According to the surface treatment process for the anti-seizure side plate, a hard layer of 0.1-0.2 millimeter is formed on the surface of a powder metallurgy side plate through secondary steam treatment, so that the original hardness HRB100 is increased to HV300, and the side plate is smooth and free from deformation in the surface, black in the metallic luster, low in the friction coefficient and resistant to wear, and has good anti-seizure capability and higher rust resistance.

Description

technical field [0001] The invention relates to the field of power-assisted oil pumps for automobile steering systems. Background technique [0002] Automobile steering has been realized by mechanical steering machines for many years. Mechanical steering machines include rack-and-pinion type and recirculating ball type. This type of steering torque is relatively large, and the operation flexibility is poor. The driver is prone to fatigue and poor safety during operation. With the continuous development of our country's economy, the continuous improvement of people's living standards, the increasing demand for driving comfort, and the rapid development of the automobile industry, the heavy-duty models with high-horsepower engines are on the rise, and the steering force is gradually increasing. It cannot meet the development of the automobile industry. The hydraulic power steering system is an effective method to reduce the steering force and reduce the labor intensity of ...

AI Technical Summary

Problems solved by technology

[0002] The steering of automobiles has been realized by mechanical steering machines for many years. Mechanical steering machines include rack and pinion type and recirculating ball type. This type of steering torque is relatively large, the operation flexibility is poor, and the driver is prone to fatigue and poor safety during operation.

With the continuous development of our country's economy, the continuous improvement of people's living standards, the increasing demand for driving comfort, and the rapid development of the automobile industry, the heavy-duty models with high-horsepower engines are on the rise, and the steering force is gradually increasing. It cannot meet the development of the automobile industry. The hydraulic power steering system is an effective method to reduce the steering force and reduce the labor intensity of the driver. The power steering pump is the basic functional part that provides pressure and flow for the hydraulic power steering system. The strength of the plate and the high failure rate on the matching wear

During the use of the phosphated side plate, it was found that under the long-term working conditions of the vane power steering pump, the finishing end face of the side plate was severely worn, and the volumetric efficiency was reduced, which eventually led to the failure of the steering pump and was eroded by air in the air. , the surface of the side plate is easy to rust, and the strength of the side plate is not enough to meet the long-term use in complex road conditions

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