Multi-layer multi-element electroplated high-strength bearing bush and its processing method
A high-strength, bearing technology, used in bearings, bearing components, shafts and bearings, etc., can solve the problems of poor anti-seizure performance, low fatigue resistance, poor corrosion resistance, etc., and achieve good corrosion resistance, high fatigue strength, Good oil-free anti-seize effect
Active Publication Date: 2016-12-14
烟台大丰轴瓦有限责任公司
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Problems solved by technology
[0002] The existing bearing bush is 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 fatigue strength and Euro III, Euro IV, Euro V emission requirements for engines with high specific pressure requirements, and low reliability problems in marine diesel engines
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[0024] The present invention provides a multi-layer multi-element electroplated high-strength bearing bush, which includes 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 on the alloy layer 2 in sequence A gate layer 3 and several layers of multi-element alloy layers 4 are plated, the gate layer 3 is composed of a mixed solution of a nickel layer, a nickel-tin layer and a copper layer, and the weight ratio of the gate layer 3 is 1:1:1, so The multi-element alloy layer 4 is composed of a solution mixed with a copper layer, a tin layer, a lead layer, an indium layer, a ceramic layer and a 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%. The thickness is: 0-0.02mm, and the total thickness of several multi-element alloy layers is 0.01-0.06mm.
[0025] A method for processing the m...
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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 electroplated high-strength bearing bush and a processing method thereof. Background technique [0002] The existing bearing bush is 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 fatigue strength and Engines with high specific pressure requirements require Euro III, Euro IV, and Euro V emission requirements, and there are problems of low reliability 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 requirements, and to provide...
Claims
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IPC IPC(8): F16C33/06F16C33/12F16C33/14C25D7/10
Inventor 木俭朴
Owner 烟台大丰轴瓦有限责任公司