Laser cladding method for mining hydraulic support column and mining stainless steel hydraulic column

Abstract

The invention relates to a laser cladding method for a mining hydraulic column and a mining hydraulic column. The laser cladding method for a mining hydraulic column comprises the steps as follows: a laser beam and a nickel-based alloy powder stream output by a powder feeder are utilized to form helical scanning along the surface of a movable column of a column body 1; the section of the laser beam output by a laser head is set into a (15-20mm)*(1.5-2.5mm) rectangular spot, the scanning linear velocity of the laser beam is set at 480-720 mm/min, and the output power of the laser for outputting the laser beam is set at 7200-7400 W, wherein the nickel-based alloy powder output by the powder feeder contains the following components in percentage by weight: not more than 0.15% of C, 0.5-1.0% of Si, 0.4-0.8% of Mn, 17.5-19.5% of Cr, 21-25% of Ni and the balance of Fe; and a mining hydraulic column with a laser cladding layer (2) which has a thickness of 0.4-0.7 mm and is formed by laser cladding of the nickel-based alloy powder is arranged on the movable column of the column body (1). Thus, the service life of the column is prolonged.

Description

[0001] 1. Technical field [0002] The invention relates to a laser cladding method for a mining hydraulic support column and a mining stainless steel hydraulic column, in particular to a mining stainless steel hydraulic column suitable for use in mines where the pH exceeds the standard. 2. Background technology [0003] In mining production, in order to ensure the production safety of the mine road, it is necessary to use the mine hydraulic support for support in the mine road. The mine hydraulic column is an important supporting part in the hydraulic support. In the existing mine hydraulic column In order to prolong the service life of the column and reduce the corrosion of the surface of the column, the surface plating method is usually used to prevent rust and corrosion on the surface. Due to the poor wear resistance of the plating layer, its service life is 1-1.5 years. The iron layer is prone to peeling and peeling, so that the emulsion will corrode the surface of the ...

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Problems solved by technology

[0003] In mining production, in order to ensure the production safety of the mine road, it is necessary to use the mine hydraulic support for support in the mine road. The mine hydraulic column is an important supporting part in the hydraulic support. In the existing mine hydraulic column In order to prolong the service life of the column and reduce the corrosion of the surface of the column, the surface plating method is usually used to prevent rust and corrosion on the surface. Due to the poor wear resistance of the plating layer, its service life is 1-1.5 years. The iron layer is prone to peeling and peeling, so that the emulsion will corrode the surface of the column, affect the use effect of the hydraulic support, and greatly reduce the service life of the mining hydraulic column

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