Precise metal part strengthened by laser cladding

Abstract

The utility model provides a kind of precision metal parts of laser cladding strengthening belongs to metal parts field, including gear, gear top is equipped with mounting hole, gear top is embedded and is equipped with heat-absorbing ring, gear outside wall is equipped with multiple first radiating rods, and the one end of multiple first radiating rods is connected with the outside wall of heat-absorbing ring, gear top is equipped with multiple second radiating rods, and the one end of multiple second radiating rods is connected with the inside wall of heat-absorbing ring, and the one end of multiple second radiating rods is equipped with radiating ring, the utility model is equipped with heat-absorbing ring, heat-absorbing ring can absorb the heat generated by gear, and heat dissipation is carried out by first radiating rod, second radiating rod and radiating ring, can avoid heat accumulation, guarantee the service life of cladding layer.

Description

Technical Field

[0001] This utility model relates to the field of metal parts, and more specifically, to a precision metal part strengthened by laser cladding. Background Technology

[0002] Laser cladding technology refers to the process of placing a selected coating material on the surface of a substrate using different filler methods, and then irradiating it with a laser to melt it and a thin layer on the substrate surface at the same time. After rapid solidification, a surface coating with extremely low dilution and metallurgical bonding with the substrate material is formed, thereby significantly improving the wear resistance, corrosion resistance, heat resistance, oxidation resistance and electrical properties of the substrate material surface. Laser cladding technology is required in the production of precision metal parts.

[0003] Currently, during the laser cladding process, residual tensile stress is generated between the substrate and the cladding layer due to the difference in their coefficients of thermal expansion, especially at the interface where stress concentration occurs. When the gears are running, heat is generated, and if the heat is not dissipated in time, it will affect the service life of the cladding layer. How to invent a precision metal part strengthened by laser cladding to improve these problems has become an urgent problem to be solved by those skilled in the art. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a precision metal component strengthened by laser cladding, which aims to improve the problem that residual tensile stress is generated between the substrate and the cladding layer due to the difference in thermal expansion coefficients during the current laser cladding process, especially the stress concentration at the interface, which generates heat when the gear is running, and the failure to dissipate the heat in time will affect the service life of the cladding layer.

[0005] This utility model is implemented as follows:

[0006] This utility model provides a precision metal component strengthened by laser cladding, including a gear. The gear has a mounting hole on its top, and a heat-absorbing ring is embedded in the top of the gear. Multiple sets of first heat-dissipating rods are installed through the outer wall of the gear, with one end of each set of first heat-dissipating rods connected to the outer wall of the heat-absorbing ring. Multiple sets of second heat-dissipating rods are installed through the top of the gear, with one end of each set of second heat-dissipating rods connected to the inner wall of the heat-absorbing ring. One end of each set of second heat-dissipating rods is provided with a heat-dissipating ring.

[0007] Preferably, the first heat sink is located inside the teeth of the gear, and the second heat sink is L-shaped.

[0008] Preferably, the top of the gear has multiple sets of heat dissipation grooves, and the inside of the heat dissipation grooves is in contact with the outer wall of the heat dissipation ring.

[0009] Preferably, the heat dissipation ring is disposed close to the top of the gear, and heat dissipation holes are evenly distributed on the top of the heat dissipation ring.

[0010] Preferably, the heat-absorbing ring is embedded below the cladding layer and is made of copper alloy.

[0011] The beneficial effects of this utility model are:

[0012] 1. This utility model incorporates a heat-absorbing ring, which absorbs the heat generated by the gear and dissipates it through the first heat dissipation rod, the second heat dissipation rod, and the heat dissipation ring, thereby preventing heat accumulation and ensuring the service life of the cladding layer.

[0013] 2. This utility model improves the heat dissipation effect by setting heat dissipation holes and heat dissipation grooves. The heat dissipation holes are distributed all over the surface of the heat dissipation ring, thereby increasing the contact surface between the heat dissipation ring and the air. At the same time, with the help of the heat dissipation grooves, the air can quickly dissipate the heat on the surface of the heat dissipation ring, further improving the heat dissipation effect. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0017] Figure 3 This is a utility model Figure 2 Enlarged view of the structure at point A in the middle.

[0018] In the diagram: 1. Gear; 2. Heat dissipation groove; 3. Heat absorption ring; 4. Heat dissipation ring; 5. First heat dissipation rod; 6. Second heat dissipation rod; 7. Heat dissipation hole. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] Example, refer to Figures 1-3A precision metal component strengthened by laser cladding includes a gear 1. The gear 1 has a mounting hole at its top, and a heat-absorbing ring 3 is embedded in the top of the gear 1. The heat-absorbing ring 3 is embedded below the cladding layer and is made of copper alloy. Multiple sets of first heat-dissipating rods 5 are installed through the outer wall of the gear 1. One end of each set of first heat-dissipating rods 5 is connected to the outer wall of the heat-absorbing ring 3. Multiple sets of second heat-dissipating rods 6 are installed through the top of the gear 1. The first heat-dissipating rods 5 are located inside the teeth of the gear 1. The second heat-dissipating rods 6 are L-shaped and one end of each set of second heat-dissipating rods 6 is connected to the inner wall of the heat-absorbing ring 3. A heat-dissipating ring 4 is provided at one end of each set of second heat-dissipating rods 6.

[0021] It should be noted that: the first heat sink 5 passes through the tooth root hole and is laser-sealed at the end; the second heat sink 6 is brazed to connect the heat absorption ring 3 and the heat dissipation ring 4.

[0022] The top of the gear 1 has multiple sets of heat dissipation grooves 2. The inside of the heat dissipation grooves 2 is in contact with the outer wall of the heat dissipation ring 4. The heat dissipation ring 4 is set close to the top of the gear 1, and heat dissipation holes 7 are evenly opened on the top of the heat dissipation ring 4.

[0023] It should be noted that when gear 1 rotates, heat dissipation groove 2 forms an air flow channel. When the gear rotates at high speed, heat dissipation groove 2 generates a "pumping effect", which accelerates the inflow of external cold air and the exhaust of internal hot air. At the same time, heat dissipation holes 7 are distributed all over the surface of heat dissipation ring, thereby increasing the contact surface between heat dissipation ring 4 and air and improving the heat dissipation effect.

[0024] Working principle: When gear 1 is working, heat absorption ring 3 absorbs the heat of gear 1, first heat dissipation rod 5 directly conducts the heat from the root of the gear to the outer edge of the gear, second heat dissipation rod 6 transfers the heat to heat dissipation ring 4, and heat dissipation is achieved through forced convection through heat dissipation holes 7. When gear 1 rotates, heat dissipation groove 2 forms an air flow channel. When the gear rotates at high speed, heat dissipation groove 2 generates a "pumping effect", which accelerates the inflow of external cold air and the discharge of internal hot air.

[0025] It should be noted that the specific model and specifications need to be selected and determined based on the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be described in detail here.

[0026] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A precision metal component strengthened by laser cladding, comprising a gear (1), wherein the gear (1) has a mounting hole on its top, characterized in that, A heat-absorbing ring (3) is embedded in the top of the gear (1). Multiple sets of first heat-dissipating rods (5) are installed through the outer wall of the gear (1). One end of each set of first heat-dissipating rods (5) is connected to the outer wall of the heat-absorbing ring (3). Multiple sets of second heat-dissipating rods (6) are installed through the top of the gear (1). One end of each set of second heat-dissipating rods (6) is connected to the inner wall of the heat-absorbing ring (3). One end of each set of second heat-dissipating rods (6) is provided with a heat-dissipating ring (4).

2. The precision metal component strengthened by laser cladding according to claim 1, characterized in that, The first heat sink (5) is located inside the teeth of the gear (1), and the second heat sink (6) is arranged in an L shape.

3. The precision metal component strengthened by laser cladding according to claim 1, characterized in that, The gear (1) has multiple sets of heat dissipation grooves (2) on its top, and the inside of the heat dissipation grooves (2) is in contact with the outer wall of the heat dissipation ring (4).

4. The precision metal component strengthened by laser cladding according to claim 1, characterized in that, The heat dissipation ring (4) is set close to the top of the gear (1), and heat dissipation holes (7) are evenly opened on the top of the heat dissipation ring (4).

5. A precision metal component strengthened by laser cladding according to claim 1, characterized in that, The heat-absorbing ring (3) is embedded below the cladding layer and is made of copper alloy.

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