Synchronous gas cooling device for laser cladding

Abstract

The utility model discloses a laser cladding synchronous gas cooling device which comprises a gas storage bottle, a gas pipe, a joint, a spiral copper pipe, a liquid nitrogen tank, a base plate, a rotating shaft bracket, a pressing strip, a base plate bracket, a pressing plate screw, a fastening screw, an XY mobile platform, an adjustable bracket, a fixing screw, a gas blowing port, a supporting plate, a bracket and a leveling base. A gas inlet of the spiral copper pipe is connected with a gas storage bottle through a gas pipe, an outlet of the spiral copper pipe is connected with a gas blowing opening in the XY moving platform, and a fixed base plate support is arranged above the XY moving platform. In the cladding process, synchronous following cooling is carried out at a certain distance behind a heat source, most of heat is rapidly taken away, an effective chilling effect is achieved, control over residual stress and deformation of a base plate is facilitated, the cooling speed of a molten pool is increased through following chilling, and therefore the purpose of refining grains is achieved, and the cladding quality is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of laser cladding equipment, and in particular relates to a gas cooling device for a laser cladding workpiece. Background Art

[0002] Laser cladding technology is an advanced metal material surface modification technology. It adds special cladding materials on the surface of the substrate, uses a high-energy laser beam to quickly melt and solidify it, and forms a good metallurgical bonding state with the substrate. However, high heat input may lead to problems such as uneven microstructure of the cladding layer, coarse grains, reduced hardness, and excessive dilution rate. In addition, there is a high temperature gradient in the heated area, so it is very easy to produce complex residual stress fields and deformations, affecting the quality of the cladding layer and part assembly. Therefore, the development of a laser cladding cooling device that can effectively reduce stress and refine grains is of great significance to improving the quality of the laser cladding layer. Summary of the invention

[0003] The utility model designs a laser cladding synchronous gas cooling device to solve the problems of coarse grains of the cladding layer, reduced hardness, excessive dilution rate, large residual stress and substrate deformation caused by high heat input.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a laser cladding synchronous gas cooling device, comprising: a gas storage bottle, an air pipe, a joint, a spiral copper tube, a liquid nitrogen tank, a substrate, a rotating shaft bracket, a pressure strip, a substrate bracket, a pressure plate screw, a locking screw, an XY movable platform, an adjustable bracket, a locking screw, an air blow port, a support plate, a bracket, and a leveling base; characterized in that: the air inlet of the spiral copper tube is connected to the gas storage bottle through the air pipe, and the outlet is connected to the air blow port on the XY movable platform, an adjustable bracket is installed on the XY movable platform, the air blow port is connected to the adjustable angle bracket through a threaded connection, the XY movable platform is fixed on the support plate, the support plate is connected to the bracket through a locking screw, the lower end of the bracket is connected to the leveling base, the pressure strip fixes the substrate to the substrate bracket through the pressure plate screw, the substrate bracket is installed on the rotating shaft bracket and fixed with a locking screw.

[0005] The beneficial effects of the utility model are: quick installation, convenient adjustment, synchronous operation, synchronous follow-up cooling of a certain distance behind the heat source during the cladding process, quickly taking away most of the heat, playing an effective quenching effect, and helping to control the residual stress and deformation of the substrate. The follow-up quenching speeds up the cooling rate of the molten pool, thereby achieving the purpose of refining the grains and improving the cladding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced one by one below. Obviously, the drawings in the following description are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0007] Figure 1 It is a schematic diagram of the overall structure of a laser cladding synchronous gas cooling device of the utility model;

[0008] Figure 2 It is a partially enlarged schematic diagram of an adjustable bracket and an air blowing port of a laser cladding synchronous gas cooling device of the utility model.

[0009] In the figure: 1. gas cylinder, 2. gas pipe, 3. joint, 4. spiral copper tube, 5. liquid nitrogen tank, 6. base plate, 7. rotating shaft bracket, 8. pressure bar, 9. base plate bracket, 10. pressure plate screw, 11. set screw, 12. XY moving platform, 13. adjustable bracket, 14. fixing screw, 15. blowing port, 16. support plate, 17. bracket, 18. leveling base. DETAILED DESCRIPTION

[0010] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached manual. Figure 1 The layout is described in detail, such as: the position relationship of top, bottom, front, back, left, right, inside, outside, etc. is based on the instructions attached Figure 1 direction to determine.

[0011] Embodiment 1, a laser cladding synchronous gas cooling device, comprising: a gas storage bottle 1, an air pipe 2, a joint 3, a spiral copper tube 4, a liquid nitrogen tank 5, a substrate 6, a rotating shaft bracket 7, a pressure strip 8, a substrate bracket 9, a pressure plate screw 10, a set screw 11, an XY moving platform 12, an adjustable bracket 13, a fixing screw 14, an air blowing port 15, a support plate 16, a bracket 17, and a leveling base 18; characterized in that: the air inlet of the spiral copper tube 4 is connected to the gas storage bottle 1 through the air pipe 2, and the outlet is connected to the XY The blowing port 15 on the mobile platform 12 is connected, an adjustable bracket 13 is installed on the XY mobile platform 12, the blowing port 15 is connected to the adjustable angle bracket 13 by a thread, the XY mobile platform 12 is fixed on the support plate 16, the support plate 16 is connected to the bracket 17 by a fixing screw 14, the lower end of the bracket 17 is connected to a leveling base 18, the pressure strip 8 fixes the substrate 6 on the substrate bracket 9 by the pressure plate screw 10, the substrate bracket 9 is installed on the rotating shaft bracket 7, and is fixed with a set screw 11.

[0012] In practical operation, first rotate the leveling base 18, place the bracket 17 steadily under the cladding head, adjust the fixing screws 14 to raise the support plate 16 to a suitable position, and fix the XY mobile platform 12 on the support plate 16. Then place the substrate 6 on the substrate bracket 9, adjust the position of the pressure strip 8, and fix it with the clamping screws 10. The substrate bracket 9 can be rotated and fixed with the set screws 11. The adjustable bracket 13 is fixed on the XY mobile platform 12, and the blowing port 15 fixed on the adjustable bracket 13 by threads can fine-tune the distance from the molten pool. Finally, the gas cylinder 1 is connected to the air inlet of the spiral copper tube 4 through the air pipe 2, and the air outlet is connected to the blowing port 15 through the air pipe 2. Pour the liquid nitrogen tank into the liquid nitrogen tank 5, turn on the control switches of the gas cylinder 1 and the XY mobile platform 12, and realize follow-up cooling during the cladding process.

[0013] The above shows the installation process and usage of the utility model. Those skilled in the art should understand that the utility model is not affected by the above content. The introduction and implementation method of the above structure are only used to illustrate the utility model. Without departing from the spirit and scope of the utility model, simple changes and substitutions by those skilled in the art are within the protection scope of the utility model.

Claims

1. A laser cladding synchronous gas cooling device, comprising: Gas storage bottle (1), gas pipe (2), joint (3), spiral copper tube (4), liquid nitrogen tank (5), base plate (6), rotating shaft bracket (7), pressure strip (8), base plate bracket (9), pressure plate screw (10), set screw (11), XY movable platform (12), adjustable bracket (13), fixing screw (14), air blowing port (15), support plate (16), bracket (17), leveling base (18); characterized in that: the air inlet of the spiral copper tube (4) is connected to the gas storage bottle (1) through the gas pipe (2), and the outlet is connected to the XY movable platform (12). The adjustable bracket (13) is connected with an air blowing port (15), and the adjustable bracket (13) is installed on the XY movable platform (12). The air blowing port (15) is connected to the adjustable bracket (13) by a thread. The XY movable platform (12) is fixed on a support plate (16), and the support plate (16) is connected with a bracket (17) by a fixing screw (14). The lower end of the bracket (17) is connected with a leveling base (18). The pressure strip (8) fixes the substrate (6) on the substrate bracket (9) by a pressure plate screw (10). The substrate bracket (9) is installed on the rotating shaft bracket (7) and fixed by a set screw (11).

Images