Process for spaying MoS2 on bearing bush without alloy layer

An alloy layer and process technology, used in coatings, devices for coating liquids on surfaces, pre-treatment surfaces, etc., can solve problems such as difficulty in spraying MoS2, reduce scratches, improve dry wear resistance, and reduce pollution. Effect

Active Publication Date: 2013-06-12
YANTAI CHUNSHENG SLIDING BEARING
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Problems solved by technology

[0004] The invention proposes a technique of spraying MoS2 on bearing pads with no alloy layer, which solves the problem that it is difficult to spray MoS2 on bearing pads without alloy layers in the prior art

Method used

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  • Process for spaying MoS2 on bearing bush without alloy layer

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Embodiment Construction

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0021] Such as figure 1 Shown, is the flow chart of the alloy-free layer bearing pad spraying MoS2 process of the present invention, which includes the following steps:

[0022] 1) Cleaning; place the finely bored steel back layer in an ultrasonic cleaning machine filled with a neutral cleaning agent for cleaning at a temperature of 60-70°C for 2-8 minutes;

[0023] 2) Pickling; put the steel back layer in 100-120g / L dilute hydrochloric acid, and wash it at room t...

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Abstract

The invention provides a process for spaying MoS2 on a bearing bush without an alloy layer, and aims to solve the problem in the prior art of spaying MoS2 on the bearing bush without the alloy layer. The process comprises the following steps of cleaning, pickling, fresh water cleaning, steel titanizing, cold water rinsing, hot water rinsing, spraying, oven-drying, steel back burnishing, sintering and the like of a steel back layer, wherein before pickling, the steel back layer after being cleaned can be firstly placed in tap water for cleaning; and before spraying, steel back layer after being rinsed by hot water can be firstly placed in an oven for oven-drying. The process is safe and environment-friendly in the implementation process; as galvanizing is omitted, pollution to the environment can be efficiently reduced; and the bearing bush produced by adopting the process has better dry grinding resistance, meshing resistance, corrosion resistance and wear resistance, and can reduce scuffing on the inner surface of the bearing bush in the installation and use process, so that the service lives of the bearing bush and lubricant in the bearing bush can be prolonged.

Description

technical field [0001] The invention relates to the technical field of bearing pad production, in particular to a technique for spraying MoS2 on a bearing pad without an alloy layer. Background technique [0002] At present, there are generally two types of bearing pad materials used in high-horsepower diesel engines in our country, one is aluminum-based materials, and the other is copper-lead materials. In general, the pressure on the main bearing bush is relatively small, so the main bearing bush is generally made of aluminum-based materials, and the connecting rod bush is generally made of copper-lead material because of the high blast pressure that the engine bears during the operation of the engine. . The fatigue strength of copper-lead materials is above 125 MPa, which is far greater than that of aluminum-based materials. Since the alloy layer of aluminum-based materials is relatively soft, electroplating is generally not required, while copper-lead materials have hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D1/36B05D3/00
Inventor 于贵海孙淑利
Owner YANTAI CHUNSHENG SLIDING BEARING
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