Wet-type copper based powder metallurgy friction wafer and manufacturing method

Abstract

A wet copper-based powder metallurgy friction plate and its manufacturing method. The friction plate is mainly composed of a steel core plate in the middle and a friction layer on at least one side, and a layer of adhesive film is bonded to at least one side of the steel core plate , and a layer of friction layer is compounded on the adhesive film layer; the manufacturing method at least includes friction layer batching, mixing, pressing, sintering, assembling with steel core plate, oil tank processing, and is characterized in that the sintering adopts Pressureless sintering in a continuous sintering furnace. The sintered friction layer is dipped in a vacuum dipping tank at room temperature and dried, and then spliced ​​with the steel core plate. Before splicing, the surface of the steel core plate is coated with glue ; After splicing, it is made by pressurizing and curing on a flat vulcanizing machine; it has the characteristics of high processing efficiency, low cost, increased hardness and strength, and high dimensional accuracy.

Description

technical field [0001] The invention relates to a transmission friction plate and a manufacturing method, in particular to a friction plate and a manufacturing method for a transmission clutch made of copper-based powder metallurgy. Background technique [0002] The friction plate is one of the most important parts in various mechanical equipment. They use friction to work. To work reliably, the friction plate must have a sufficiently high and stable friction coefficient, high wear resistance, heat resistance, and high mechanical strength. , will not bite to death with the dual piece. The friction plate can be divided into metal, fiber reinforced resin base, such as asbestos, semi-metal, non-asbestos, paper base, carbon base, or powder metallurgy friction material according to the material. Powder metallurgy friction materials are widely used due to their high heat resistance, friction coefficient and wear resistance under various working conditions. The application range ...

AI Technical Summary

Problems solved by technology

Although the above-mentioned pressing and firing process makes the friction layer and the steel core plate have a higher bonding strength, there are still many disadvantages, such as the hardness and strength of the steel core plate are reduced after sintering and annealing, and the pressure transmission backing plate must be used to increase energy consumption during pressure sintering. The product is prone to pressure deviation, and the low melting point components in the friction layer are easily squeezed out, commonly known as alloy tumors, which reduces the friction performance of the friction plate and affects the appearance quality of the product. The cycle is longer and the cost is higher.

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