Adjustable preset powder laying device used for laser cladding

Abstract

The invention discloses an adjustable preset powder laying device used for laser cladding. The adjustable preset powder laying device comprises a workbench, a base plate arranged above the workbench and a base plate clamping mechanism installed on the workbench and used for fixing the base plate. A frame assembly with an adjustable length and width is arranged on the base plate, a frame clamping mechanism used for fixing the frame assembly is installed on the base plate clamping mechanism, and a movable beam mechanism with an adjustable height is arranged on the frame assembly. The movable beam mechanism comprises two guiding blocks and a middle block arranged between the two guiding blocks. A dual-directional lead screw used for driving the guiding blocks to move back and forth is arranged on the middle block in a penetrating mode in the horizontal direction, and a retractable curtain capable of stretching out and drawing back is arranged below the dual-directional lead screw. The adjustable preset powder laying device used for laser cladding is simple in structure and novel and reasonable in design, during preset powder feeding laser cladding, the power laying thickness and area can be accurately controlled during laser cladding preset powder laying, the adjustable effect of the powder laying area and thickness can be achieved, and operation is convenient.

Description

technical field [0001] The invention belongs to the technical field of laser cladding, and in particular relates to an adjustable preset powder spreading device for laser cladding. Background technique [0002] Since the 1980s, laser cladding technology has developed rapidly, and has become a research hotspot at home and abroad. Laser cladding technology is to use high-energy density laser beams to rapidly melt alloy powders with different components and properties on the surface of the substrate to form an alloy layer with completely different components and properties from the substrate. It is an important laser surface modification technology. . Laser cladding technology has great technical and economic benefits, and is widely used in machinery manufacturing and maintenance, automobile manufacturing, textile machinery, navigation and aerospace, and petrochemical industries. According to different powder feeding methods, this technology can be divided into synchronous po...

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Problems solved by technology

[0003] Now, the commonly used preset powder spreading method is manual powder spreading, which is difficult to control the thickness and area of ​​powder spreading

There is another way of powder spreading is to place the substrate to be processed on the servo workbench, and place a powder feeder directly above the workbench. The powder feeder can send powder evenly, and the movement of the workbench is controlled by writing a program. The powder can be evenly sprinkled on the substrate. This method has the advantages of high productivity, good forming accuracy, and greatly reduces the unevenness of the cladding layer, but the thickness of the powder cannot be controlled. Due to the rolling properties of the powder, the powder The specific area is difficult to control, and the powder uniformity at the edge is poor, wasting material

Some scientific research institutions sometimes need to precisely control the thickness and area of ​​powder coating when conducting preset powder feeding laser cladding experiments, but lack of special experimental equipment, so they can only order a special mold. Although this method can control The thickness and area of ​​powder spreading, but the thickness of powder spreading and the area of ​​powder spreading are not adjustable, which has great limitations

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