Method for strengthening scraper by laser

A technology of laser strengthening and scraper machine, which is applied in laser welding equipment, coating, metal material coating technology, etc., can solve problems such as uneven use, and achieve the effects of prolonging service life, uniform thickness, and good anti-corrosion performance

Active Publication Date: 2011-02-16
SHANDONG ENERGY HEAVY EQUIP GRP DAZU REMANUFACTURING CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the shortcomings of the existing scraper machine in homogeneous production but inhomogeneous use, the present invention pro

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for laser strengthening a scraper machine, comprising the following steps:

[0026] 1) Grinding the surface of the scraper machine, removing rust and slag, and cleaning the surface with alcohol to degrease;

[0027] 2) Cooperating with the feed movement of the X linear axis and Y linear axis of the laser head, powder feeding and laser cladding are carried out synchronously in one working step. The laser output power is 6.8kw, the scanning speed is 600mm / min, and the powder feeding rate is 18g / min, the laser beam is a 15*2.5 broadband rectangular spot, cladding the metal powder to the parts that are easy to wear, forming a laser strengthening layer with a cladding thickness of 3mm; the weight percentage of the selected metal powder material is: 65.93% Fe, 0.07% C, 0.8% Si, 0.6% Mn, 18.1% Cr, 12.2% Ni, 2.3% Mo.

[0028] The average microhardness of the laser-strengthened scraper after laser cladding is HV800, and the Rockwell hardness is HRC65.

[0029] The las...

Embodiment 2

[0031] A method for laser strengthening a scraper machine, comprising the following steps:

[0032] (1) Grinding the surface of the scraper machine, removing rust and slag, and cleaning the surface with alcohol to degrease;

[0033] (2) Cooperating with the feed movement of the X linear axis and Y linear axis of the laser head, powder feeding and laser cladding are carried out synchronously in one step; the laser output power is 6.8kW, and the laser scanning line speed is 600mm / min. The rate is 18g / min, the laser beam is a 15*2.5 wide-band rectangular spot, and the metal powder is clad to the parts that are easy to wear to form multiple layers of laser strengthening layers; the multiple layers of laser strengthening layers include the bottom layer placed on the surface of the scraper machine, More than one intermediate layer and a surface layer located above the intermediate layer;

[0034] The weight percentage of the metal powder material selected for the bottom layer is: 0...

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Abstract

The invention discloses a method for strengthening a scraper by laser, belonging to the technical field of laser cladding. The technical scheme of the invention is as follows: the method for strengthening the scraper by laser comprises the following steps: 1), polishing the surface of the scraper, scaling, deslagging, and carrying out deoiling cleaning on the surface with alcohol; 2), synchronously carrying out powder feeding and laser cladding in one work step under the feed motion coordination of an X linear axle and a Y linear axle of a laser head, wherein the laser output power is 6.8kw, the scanning speed is 600 mm/min, the powder feeding rate is 18g/min, and laser beams are 15*2.5 broadband rectangular light spots; and cladding metal powder at a wearing position to form a laser enhanced layer with cladding thickness of 3mm, wherein the selected metal powder materials comprises the following components in percentage by weight: 65.93% of Fe, 0.07% of C, 0.8% of Si, 0.6% of Mn, 18.1% of Cr, 12.2% of Ni and 2.3% of Mo. In the method, laser energy beams are adopted to strengthen the wearing position by using a laser cladding method, thereby improving the hardness and the wear-resistance of the wearing position, delaying the wear rate and enabling the wearing position and the whole machine to be simultaneously failed.

Description

technical field [0001] The invention relates to a laser strengthening method for a scraper machine, which uses laser cladding technology to form a strengthening layer on the surface of the scraper machine, and belongs to the technical field of laser cladding. Background technique [0002] The conveyor that uses a scraper chain to transport bulk materials in the tank is called a scraper conveyor, or scraper machine for short. [0003] In the current coal mining face, the role of the scraper conveyor is not only to transport coal and materials, but also the running track of the coal mining machine, so it has become an indispensable main equipment in the modern coal mining process. The scraper conveyor can keep running continuously, and the production can go on normally, otherwise, the entire coal mining face will be in a state of shutdown, causing the entire production to be interrupted. [0004] The scraper is an important means of transportation for conveying materials in c...

Claims

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Application Information

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IPC IPC(8): B23K26/34C23C24/10
Inventor 李希勇李伦实周峰杜柏奇杨庆东
Owner SHANDONG ENERGY HEAVY EQUIP GRP DAZU REMANUFACTURING CO LTD
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