Multi-layer multi-component electroplating high-strength bearing bush, shaft sleeve and bush and processing methods thereof
A high-strength, bearing technology, applied in the direction of shafts and bearings, bearings, bearing components, etc., can solve the problems of poor anti-seizure performance, low fatigue strength, poor corrosion resistance, etc., and achieve good corrosion resistance, high fatigue strength, Oil-free good anti-seize effect
Active Publication Date: 2011-02-09
烟台大丰轴瓦有限责任公司
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Problems solved by technology
[0002] The existing bearing pads and bushings are generally composed of a steel back layer and a bearing alloy layer. In the process of specific application, there are the following disadvantages: low fatigue resistance, poor wear resistance, poor seizure resistance, poor corrosion resistance, and cannot adapt to high Euro Ⅲ, Euro Ⅳ, Euro Ⅴ emission requirements for engines with high requirements for fatigue strength and high specific pressure, and the problem of low reliability in marine diesel engines
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[0031] The present invention provides a multi-layer multi-component electroplated high-strength bearing bush and bushing, including a steel back layer 1 and a bearing alloy layer 2. The bearing alloy layer 2 is plated on the outer surface of the steel back layer 1, and is characterized in that: A grid layer 3 and a multi-element alloy layer 4 are sequentially plated on the alloy layer;
[0032] The gate layer 3 is one layer;
[0033] The multi-element alloy layer 4 is several layers;
[0034] Described gate layer is made up of the mixed solution of nickel layer, nickel-tin layer and copper layer; The weight ratio of described three layers is 1:1:1;
[0035] The multi-element alloy layer is composed of a solution mixture of copper layer, tin layer, lead layer, indium layer, ceramic layer and bismuth layer, wherein the parts by weight of each component are: copper: 0% to 8%; tin: 10% to 96%; lead: 0-80%; indium: 0-12%; ceramics: 0-10%; bismuth: 0-20%;
[0036] The thickness o...
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Abstract
The invention relates to multi-layer multi-component electroplating high-strength bearing bush, a shaft sleeve and processing methods thereof. The multi-layer multi-component electroplating high-strength bearing bush comprises a steel back layer and a bearing alloy layer, wherein the bearing alloy layer is electroplated on the outer surface of the steel back layer. The multi-layer multi-component electroplating high-strength bearing bush is characterized in that a grid layer and a multi-component alloy layer are sequentially electroplated on the alloy layer. The methods comprise steps of hanging, degreasing, passivating, activating, electroplating and the like. The bearing bush and the shaft sleeve processed by the method have high fatigue strength, high abrasion resistance, good instant non-oil occlusion resistance and good corrosion resistance; and the invention provides a high-reliability bearing bush and a high-reliability shaft sleeve for marine diesel engines.
Description
technical field [0001] The invention relates to a multi-layer multi-element electroplating high-strength bearing bush, a shaft sleeve and a processing method thereof Background technique [0002] The existing bearing pads and bushings are generally composed of a steel back layer and a bearing alloy layer. In the process of specific application, there are the following disadvantages: low fatigue resistance, poor wear resistance, poor seizure resistance, poor corrosion resistance, and cannot adapt to high Euro III, Euro IV, and Euro V emission requirements for engines with high fatigue strength and high specific pressure requirements, and low reliability problems in marine diesel engines. Contents of the invention [0003] One of the purposes of the present invention is to provide engines with high fatigue strength, high wear resistance, instant oil-free anti-seizing performance, and good corrosion resistance for engines with Euro III, Euro IV, and Euro V emission requiremen...
Claims
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IPC IPC(8): F16C33/12F16C33/14F16C33/06C25D7/10
Inventor 木俭朴
Owner 烟台大丰轴瓦有限责任公司