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Composite sulfide solid lubricating film and preparation method thereof

A solid lubricating and sulfide technology, applied in the field of composite sulfide solid lubricating film layers and their preparation, can solve the problems of unsatisfactory lubricating properties of solid lubricating coatings, and achieve compact structure, promotion of adsorption and diffusion, and many crystal defects. Effect

Inactive Publication Date: 2013-11-13
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

[0006] With the development of science and technology, the existing FeS lubricating coatings are mostly obtained by sulfurizing directly on the steel substrate or on the iron coating, and the lubricating properties of the solid lubricating coatings processed by this process can no longer meet the requirements. The requirements of some special working conditions, therefore, the preparation method of solid lubricating coating needs to be innovated and expanded

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  • Composite sulfide solid lubricating film and preparation method thereof
  • Composite sulfide solid lubricating film and preparation method thereof
  • Composite sulfide solid lubricating film and preparation method thereof

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Embodiment Construction

[0028] The implementation process steps of the present invention are as follows:

[0029] 1. Self-made Ni-based cermet powder rich in Fe, W, and Mo. After drying, pre-set 1.5mm-2.5mm thick powder on the surface of No. 45 steel substrate, and then perform laser cladding treatment. The specific process parameters are: 5kW cross flow CO 2 Laser processing system, the power is 3400W~3600W, and the scanning speed is 180mm / min~200mm / min.

[0030] 2. Carry out surface treatment on the laser cladding layer, including fine grinding, mechanical polishing and ultrasonic cleaning, and cover and shield the non-sulfurizing surface.

[0031] 3. Perform low-temperature ion sulfurization treatment on the laser cladding layer. It is to connect the substrate after laser cladding to the cathode, and the furnace wall to the anode. When the vacuum reaches 1Trro, apply high-voltage direct current between the anode and the cathode. The sulfurizing temperature is 170°C-220°C, and the sulfur-containi...

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Abstract

The invention discloses a composite sulfide solid lubricating film and a preparation method thereof. A technical scheme provided in the invention is as follows: the composite sulfide solid lubricating film is characterized by comprising a laser cladded layer which is obtained by carrying out laser cladding on a substrate and a sulfide layer obtained through sulfurizing. The invention has the following beneficial effects: the composite sulfide solid lubricating film is formed on a laser cladded Ni-based metal ceramic coating after sulfurizing, there is no obvious border between the composite sulfide solid lubricating film and the laser cladded Ni-based metal ceramic coating, and thus the lubricating film has a compact structure and has strong bonding capacity with the laser cladded layer; metallurgical bonding between the Ni-based metal ceramic laser cladded layer and the substrate can be realized; the laser cladded layer is rich in the elements of Fe, W and Mo, the composite sulfide solid lubricating film containing FeS, WS2 and MoS2 can be obtained after sulfurizing, and the composite sulfide solid lubricating film has a small friction coefficient, small grinding depth, a compact structure and good wear resistance, corrosion resistance and anti-friction lubricating performance.

Description

technical field [0001] The invention relates to the technical field of metal material surface treatment, in particular to a composite sulfide solid lubricating film layer and a preparation method thereof. Background technique [0002] In order to improve the anti-friction and wear resistance and service life of parts, the usual methods are to increase surface hardness and add lubricating oil, but these measures are not always feasible. On the one hand, the increase in the surface hardness of the workpiece will intensify the wear of the counterpart; on the other hand, high hardness will cause a decrease in toughness, which is not conducive to resistance to fatigue wear. Moreover, under special circumstances such as high temperature, high pressure, and vacuum, lubricating oil cannot play a role. The use of solid lubrication is an effective way to overcome the above deficiencies. [0003] Solid lubrication refers to the use of solid powder, coating or composite materials inst...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C28/00C23C24/10C23C8/36C23C8/42C23C8/08C23C8/62
Inventor 韩彬王勇赵卫民韩涛李美艳孙建波万盛薛敏鹏
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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