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.