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Self-lubricating wear-resisting coating for laser manufacturing hot rolled strip curling front guide ruler liner plate

A technology of wear-resistant coating and hot-rolled strip steel, which is applied in the field of alloy powder of self-lubricating wear-resistant coating to achieve the effect of reducing friction coefficient, good self-lubricating performance and improving self-lubricating performance

Inactive Publication Date: 2017-04-26
沈阳大陆激光工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since there is no corresponding material in the field of laser cladding for this material at present, after special research and development, discussion and development, and through the analysis of the wear mechanism system of the guide ruler liner, a laser composite self-lubricating material that is resistant to high temperature wear has been developed. has become a matter of urgency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The guide liner of the hot rolling production line of a steel factory in Nanjing is in use, and the guide liner fails due to excessive high temperature wear within 20 hours on average.

[0018] After using the application method of the present invention for laser cladding manufacturing, the laser cladding parameters are: power: 1200W, spot diameter: 1.8mm, scanning speed: 25mm / s, powder placement thickness: 0.5mm. Use the self-lubricating alloy powder with a particle size of 150 mesh used in the laser manufacturing of the front guide liner plate for hot-rolled steel coiling for cladding, and its components (mass percentage) are: Cr: 13.8%; Co: 7.5% ; Si: 0.35%; N: 0.4%; Nb: 0.3%; W: 10%; B: 8.5%;

[0019] After proper cladding process design, the size and precision required by the original design will be restored. The upper machine is in service under actual working conditions, and it can still be used online after 130 hours of use (the original use is 20 hours). That...

Embodiment 2

[0021] During the use of the guide liner of a steel factory in Hebei, the use time is only 8 hours, and the wear depth is more than 6mm, which seriously affects the work efficiency of the production line.

[0022] Use this material for laser cladding. The laser cladding parameters are "power: 1500W, spot diameter: 1.8mm, scanning speed: 30mm / s, powder thickness: 0.5mm." The powder with a particle size of 230 mesh is used for cladding, and the composition is: Cr: 13.5%; Co: 8.6%; Si: 0.35%; N: 0.45%; Nb: 0.36%; W: 12%; B; 11%;

[0023] After proper laser cladding design, the original size and precision are restored to meet the design requirements. Assembled to the hot rolling line for on-line test, the test result has been used from only 8 hours to 50 hours, and the service life has increased to more than 6 times, far exceeding the design index.

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Abstract

The invention discloses a self-lubricating wear-resisting coating for a laser manufacturing hot rolled strip curling front guide ruler liner plate. The self-lubricating wear-resisting coating is characterized in that alloy powder of the laser cladding self-lubricating wear-resisting coating comprises Cr, Co and Si and is characterized by further comprising N, Nb, W and B, wherein the alloy powder includes, by mass percent, 8%-18% of Cr, 5%-10% of Co, 0.1%-0.5% of Si, 0.3%-0.5% of N, 0.1%-0.5% of Nb, 8%-16% of W, 8%-12% of B and the balance Ni. Due to optimal design of technology parameters of laser cladding and the ratio of all element components in the powder material, the high-temperature-wear-resistance hardness of the hot rolled strip curling front guide ruler liner plate obtained after cladding completely conforms to the design index, and in addition, the service life is greatly prolonged and is prolonged by at least 6 times.

Description

technical field [0001] The present invention relates to a self-lubricating coating for the guide rail lining, in particular to an alloy powder with high temperature wear resistance and a self-lubricating and wear-resistant coating for the laser manufacturing of the guide rail lining before hot-rolled strip coiling , belonging to the C23C24 / 10(2006.01) I technical field in the International Patent Classification. Background technique [0002] The guide liner is an important equipment of the hot rolling production line, especially the guide liner before the coiling of the hot strip steel production line has a core effect on the final coil shape of the steel coil, and can be said to be one of the most important equipment affecting the qualified rate of finished products one. In recent years, with the increasing competition of hot-rolled coils, the coil shape has become an important control index in the production process. As an important equipment on the hot rolling line, the...

Claims

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Application Information

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IPC IPC(8): C23C24/10C22C19/05
CPCC23C24/103C22C19/056C22C19/057
Inventor 陈海涛张冬雪史建民董思远
Owner 沈阳大陆激光工程技术有限公司
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