Roller out-of-order roughening processing method based on fiber laser

A technology of fiber laser and processing method, which is applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of steel plate deep drawing performance influence, complicated control equipment, and irregular roughened point appearance, etc., and achieves improved surface Appearance quality and service life, improved wear resistance and service life, uniform density distribution

Inactive Publication Date: 2014-03-19
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of orderly texturing of laser texturing equipment, the Chinese patent "A Laser Texturing Treatment Method for Roll Surface" (publication number: CN101642778A) proposes to speed up the movement rate of the laser texturing head along the axial direction of the roll and increase the helix inclination , formed as figure 2 The spiral uniform lattice is shown, but although the distribution of textured pits is non-linear in the circumferential direction and length direction of the roll, it is orderly along the direction of the thread inclination angle. When the roll rolls the strip, it is also It will affect the reflection effect of the board surface at different angles
The Chinese patent "A Processing Method for Multi-Head Las

Method used

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  • Roller out-of-order roughening processing method based on fiber laser
  • Roller out-of-order roughening processing method based on fiber laser
  • Roller out-of-order roughening processing method based on fiber laser

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Experimental program
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Effect test

Embodiment 1

[0037] The processed roll 3 is placed on the roll shaft 4 of the CNC machine tool 2, and is tightened by the top 5; the CNC machine tool 2 is started to make the processed roll 3 rotate around its axis; at the same time, the driving mechanism in the CNC machine tool 2 Control the texturing platform 7 on the translation guide rail 6 to move parallel to the axial direction of the processed roll 3; drive the laser focusing head 8 located on the texturing platform to move back and forth along the axial direction of the processed roll 3. The laser focusing head 8 receives the pulsed laser light emitted by the laser 1, and sends a pulsed laser beam to the processed roll 3 at regular intervals. The staggered array of high-density and uniform small micro-pit lattices formed by the short-range helix δ of the inclination angle, thereby performing texturing processing on the processed roll 3 .

[0038] In this embodiment, the material of the processed roll 3 is 9Cr3Mo, its diameter d=60m...

Embodiment 2

[0043] Embodiment 2 is basically the same as Embodiment 1, except that the material of processed roll 3 in Embodiment 2 is 9Cr2W, its diameter d=50mm, and its total length is 4000mm; the wavelength of fiber pulse laser is 1.6μm, the frequency is 3000Hz, and the conversion period t is 10s, and the length of the helix δ is 500mm. Table 2 shows the rotational speed ω of part of the processed roll 3 and the traverse speed v of the laser focusing head 8 along the axial direction of the processed roll 3 .

[0044] Table 2

[0045] ω (rpm)

[0046] The shape of the textured lattice on the processed roll 3 treated in Example 2 is also substantially the same as that in Example 1.

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Abstract

The invention discloses a roller out-of-order roughening processing method based on a fiber laser. The method comprises the following steps: (1) a roller to be processed is driven to rotate around the axis lead of the roller, and the rotational speed omega of the roller is made to change randomly according to a set period t; (2) a laser focusing head is aligned with the surface of the roller to be processed and is made to move horizontally back and forth in the axial direction of the roller to be processed; (3) the horizontal moving speed v of the laser focusing head is under coupling control so that a motion trail of the laser focusing head relative to the roller to be processed can form short-range spiral lines delta with varying pitches and varying dip angles, wherein the short-range spiral lines delta are arranged in a staggered mode; (4) the fiber laser is used for emitting pulse laser beams to the laser focusing head at fixed time, and the pulse laser beams after being focused can be used for processing high-density uniform roughening dot matrixes with small dimples, corresponding to the short-range spiral lines delta, on the surface of the roller to be processed. According to the roller processed through the roller out-of-order roughening processing method, the short-range spiral high-density dot matrixes which are arranged in a staggered mode and distributed uniformly are formed on the surface of the roller, so that the wear resistance of the processed roller is greatly improved, and the service life of the processed roller is prolonged.

Description

technical field [0001] The invention relates to a laser roughening processing technology on the surface of a roll, in particular to a method for roughening a roll based on a fiber laser. Background technique [0002] The surface morphology of cold-rolled sheet steel has an important influence on the plate shape, deep drawability, elongation and coating performance, and the surface morphology of cold-rolled sheet steel depends to a large extent on the work rolls and Surface topography of the leveling roll. Therefore, in the cold-rolled sheet production process, it is required to roughen the roll surfaces of the cold-rolled work rolls and leveling rolls, and then roll out the cold-rolled textured steel plates that meet the special process requirements of users. [0003] So far, the development of roll texturing technology and equipment has gone through three stages: shot peening texturing, electric spark texturing and laser texturing developed in the 1990s. Shot peening text...

Claims

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Application Information

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IPC IPC(8): B23K26/00B23K26/08
CPCB23K26/0823B23K26/36
Inventor 蔡珍韩斌汪荣刘洋汪水泽郑江鹏
Owner 武汉钢铁有限公司
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