Manufacturing method of iron-based friction plate

Abstract

A manufacturing method of iron-based friction plates comprises the following processes: 1. furnishing, 2. mixing, 3. profiling, 4. sintering friction layer, 5. plating copper on core boards, 6. pressuring and compositing at intermediate temperature, and 7. processing an oil groove; the friction layer is added with a process of sintering the friction layer after the profiling, i.e. the friction layer after the profiling is sintered into the powder base of the friction layer in a bell-type pressure sintering furnace or an iron-based through continuous sintering furnace, the sintering temperature is 1050 DEG C-1100 DEG C, heat preserving for 2.5-3.5 hours, the atmosphere is ammonia decomposition gas; the core board plating is formed by the steps that copper plating the core board by electroplating to be prepared into the core board plated copper, the core board is hung at a cathode, a copper board is hung at an anode, electroplate liquid with copper ion is added into a plating tank, direct current is conducted into the plating tank, and electroplating time is adjusted according to the thickness of plating; the thickness of the plating is 0.005-0.01mm; and the invention is characterized in that the core board has high strength, the deformation is small, the yield at one step of checking is high, and the cost is low, the method is suitable for mass production, and the like.

Description

technical field [0001] The invention relates to a method for manufacturing an iron-based friction plate, which belongs to the technical field of powder metallurgy friction material technology. Background technique [0002] The iron-based friction plate is composed of a steel core plate and at least one side covered with a layer of iron-based friction material. The traditional iron-based friction plate manufacturing process adopts the method of high-temperature pressure sintering. The traditional process mainly includes: 1. Ingredients, 2. Mixing materials, 3. Pressing, 4. Core plate nickel plating, 5. Pressure sintering, 6. , Oil tank processing and other processes. [0003] Described batching, its composition ratio is shown in the table below: [0004] material name Fe Cu sn Pb C SiO 2 MoS 2 content(%) 60--75 1--7 1--5 2--6 5--9 3--7 1--5 Granularity (mesh) -200 -200 ...

AI Technical Summary

Problems solved by technology

[0015] The above-mentioned traditional manufacturing process can achieve a certain strength of the friction layer, and the steel core plate and the friction layer can be firmly connected; but the disadvantage of this process is that after the steel core plate is sintered at high temperature, its strength is seriously reduced, and the warping deformation is serious. It cannot meet the technical requirements of the product itself, and often needs to be heat-leveled to meet the drawing requirements