Novel intertillage blade laser automatic surfacing method

Abstract

The invention discloses a novel intertillage blade laser automatic surfacing method which comprises the following steps: 1) placing an intertillage blade to be subjected to surfacing on a tool of surfacing equipment, and clamping and fixing the intertillage blade; 2) when the equipment is started and runs stably; (3) the laser head is controlled to move through the demonstrator, the plane of the laser head is parallel to the workpiece, the laser focal length is adjusted, the powder feeding angle is adjusted, and the running path is planned; (4) the robot is moved to a space point and a pre-welding cladding area, and is polished to metal luster; (5) the laser head is moved to the arcing position, the laser power is set to be 2800W, the welding speed is set to be 350mm, the cladding thickness is set to be 0.5 mm-0. 7mm, and surfacing of the titanium nitride alloy is started; and (6) for welded products, heat preservation cotton is coated for slow cooling, and rapid cooling of the workpieces is avoided. According to the invention, a layer of titanium nitride material is deposited on the blade part of the cutter body through process improvement, so that the hardness of the blade part is increased (greater than 70 HRC), the service life is greatly prolonged (the service life reaches 1200-1300 mu after improvement), and the use cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of surfacing, in particular to a new laser automatic surfacing method for a cultivator blade. BACKGROUND

[0002] In production practice, the service life of ordinary cultivator blades is short, and they need to be replaced frequently. The cost is high due to tool wear. The existing technology often quenches the blade body by 65Mn to ensure that the blade body meets the hardness of HRC48-54 and the handle meets the hardness of HRC38-45, so as to improve the service life of the cultivator blade, which can reach 200-300 mu of service life.

[0003] However, there are still problems of insufficient hardness of the blade part and short service life. SUMMARY

[0004] The present application provides a new laser automatic surfacing method for a cultivator blade, which improves the process to deposit a layer of titanium nitride material on the blade part, increases the hardness of the blade part (>70HRC), greatly increases the service life (after improvement, the service life reaches 1200-1300 mu), and reduces the use cost.

[0005] Technical scheme: The laser automatic surfacing method for a new cultivator blade comprises the following steps:

[0006] 1) Place the cultivator blade to be surfacing on the tooling of the surfacing equipment and clamp and fix it;

[0007] 2) Turn on the robot main power supply, laser power supply and cooling water tank, and wait for the equipment to run stably;

[0008] 3) Control the mobile laser head through the teach pendant, make the plane of the laser head parallel to the workpiece, adjust the laser focal length, adjust the powder feeding angle, and plan the running path;

[0009] 4) Move the robot to the space point and the pre-welding cladding area, and polish to a metallic luster;

[0010] 5) Move the laser head to the arc striking position, set the laser power to 2800W, the welding speed to 350mm, and the cladding thickness to 0.5-0.7mm, and start surfacing titanium nitride alloy;

[0011] 6) After welding, wrap the product with heat preservation cotton for slow cooling to prevent rapid cooling of the workpiece.

[0012] In the step 1), the curved blade surface of the cultivator blade is not allowed to have cracks, overburning or burrs less than 0.2mm; the two sides of the curved blade are flat, and the blade edge is smooth; and the installation hole deviation is less than 1mm.

[0013] The step 3) adjusts the laser focus, and ensures that the light spot energy is concentrated.

[0014] The step 5) is that the welding seam is fused on the tillage blade, and the welding seam extends from the cutting position of the blade to the position close to the handle.

[0015] The step 1) is that the surfacing equipment is provided with a robot, a laser, an optical system, a welding head, a cooling system and a control system.

[0016] Beneficial effects: Compared with the prior art, the present application has the following remarkable advantages: the present application fuses a layer of titanium nitride material on the blade of the blade body through process improvement, increases the hardness of the blade (> 70HRC), greatly increases the service life (the service life reaches 1200-1300 mu after improvement), and reduces the use cost. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The surfacing effect of the present application is shown Figure One ;

[0018] Figure 2 The surfacing effect of the present application is shown Figure Two . DETAILED DESCRIPTION

[0019] The technical solutions of the present application will be further described below in combination with the drawings and specific embodiments.

[0020] The novel laser automatic surfacing method of the tillage blade of the present application comprises the following steps:

[0021] 1) The tillage blade to be surfaced is placed on the tooling of the surfacing equipment and clamped and fixed; the curved blade surface of the tillage blade is not allowed to have cracks, overburning and burrs less than 0.2mm; the two sides of the curved blade are flat, and the blade edge is smooth; the installation hole deviation is less than 1mm. The surfacing equipment is provided with a robot, a laser, an optical system, a welding head, a cooling system and a control system.

[0022] 2) Turn on the total power supply of the robot, the power supply of the laser and the cooling water tank, and wait for the equipment to run stably.

[0023] 3) Control the movement of the laser head through the teaching device, make the plane of the laser head parallel to the workpiece, adjust the laser focus, adjust the powder feeding angle, plan the running path; adjust the laser focus to ensure that the light spot energy is concentrated.

[0024] 4) Move the robot to the space point, fuse the area before welding, and polish to metal luster.

[0025] 5) move the laser head to the arc starting position, set the laser power to 2800W, the welding speed to 350mm, the cladding thickness to 0.5mm-0.7mm, and start the surfacing of the titanium nitride alloy; the weld is cladded at the tiller blade, and the weld extends from the blade cutting position to the position close to the handle.

[0026] 6) after the welding is completed, the product after the welding is covered with heat preservation cotton for slow cooling, and rapid cooling of the workpiece is avoided.

[0027] The application improves the process to cladding a layer of titanium nitride material at the blade of the blade body, increases the hardness of the blade (>70HRC), greatly increases the service life (the service life reaches 1200-1300 mu after the improvement), and reduces the use cost.

Claims

1. A novel laser automatic build-up welding method for a new cultivator blade, characterized by: It comprises the following steps: 1) Put the middle plough blade to be surfacing to the tooling of surfacing equipment, clamping and fixing; 2) Turn on the total power supply of robot, the power supply of laser, and the cooling water tank, and wait for the equipment to run stably; 3) Control the mobile laser head through the teach pendant, make the plane of the laser head parallel to the workpiece, adjust the laser focal length, adjust the powder feeding angle, and plan the running path; 4) Move the robot to the space point, weld the cladding area before welding, and polish to the metal luster; 5) Move the laser head to the arc striking position, set the laser power to 2800W, the welding speed to 350mm, and the cladding thickness to 0.5mm-0.7mm, and start the surfacing of titanium nitride alloy; 6) After the welding is completed, cover the product after welding with heat preservation cotton for slow cooling, and prevent the workpiece from being cooled quickly.

2. The novel laser automatic build-up welding method for a new cultivator blade according to claim 1, characterized by: The curved blade surface of the middle plough blade in step 1) is not allowed to have cracks, overburning, and burrs less than 0.2mm; the two sides of the curved blade are flat, and the blade edge is smooth in transition; and the installation hole deviation is less than 1mm.

3. The novel laser automatic build-up welding method of a cultivator blade according to claim 1, characterized by: In step 3), the laser focal length is adjusted to ensure that the light spot energy is concentrated.

4. The novel laser automatic build-up welding method of a cultivator blade according to claim 1, characterized by: In step 5), the weld is cladded at the blade edge of the middle plough blade, and the weld extends from the cutting position of the blade edge to the position close to the handle.

5. The novel laser automatic build-up welding method of a cultivator blade according to claim 1, characterized by: In step 1), the surfacing equipment is provided with a robot, a laser, an optical system, a welding head, a cooling system, and a control system.

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