Welding aging treatment device for hard alloy rotary file head
Through the heat treatment and vibration treatment of the aging treatment device for the cemented carbide rotary file head welding, the problem of the brittle edge of the file becomes after welding is solved, and the welding strength and durability of the file are improved.
Patent Information
- Application Number
- CN202421205478.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-30
AI Technical Summary
During the welding process, the cemented carbide rotary file head is prone to desoldering and cracks in the welding holes, resulting in the file edge becoming brittle, easy to collapse and not durable.
A cemented carbide rotary file head welding aging treatment device is designed, including a heat treatment part and a vibration treatment part. The heat treatment unit heats the welded file head through an electric thermal insulation box to eliminate internal stress; the vibration treatment unit performs abrasive vibration treatment on the file head through a vibration box to further release internal stress.
Through heat treatment and vibration treatment, the internal stress in welding is effectively eliminated, the welding strength between the carbide rotary file head and the steel handle is increased, and the service life of the file is extended.
Smart Images
Figure CN222455143U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of welding treatment of carbide rotary files, in particular to a welding aging treatment device for carbide rotary file heads. Background Art
[0002] At present, the existing technology in China mainly uses carbide head blanks with holes and steel handles with protrusions for welding carbide rotary file heads. Brass HL105 is used as solder and the high-frequency heating temperature is 1050-1150℃. The welding performance is unstable and desoldering and cracks at the welding holes are prone to occur. The blade of the carbide rotary file becomes brittle after toothing, is prone to chipping and is not durable.
[0003] The reason for the above problems is that the welding temperature is too high, which leads to serious oxidation of cemented carbide materials and aggravates the excessive welding internal stress caused by the different thermal expansion coefficients of steel and cemented carbide. Therefore, how to eliminate the welding internal stress is the key to solving this problem. Summary of the invention
[0004] In order to solve the above problems, the utility model provides the following solutions:
[0005] A device for welding aging treatment of carbide rotary file heads comprises a feed part, a heat treatment part, a conveying part, a vibration treatment part and a discharge part connected from the front end to the rear end; the heat treatment part comprises an electric heating insulation box, an electric heating feed port is arranged at the top of the electric heating insulation box, an electric heating discharge port is arranged at the bottom of the electric heating insulation box, a heating layer is arranged on the inner wall of the electric heating insulation box, and an insulation layer is arranged between the heating layer and the inner wall of the electric heating insulation box; the feed part comprises a feed bin, and an outlet at the bottom of the feed bin is connected with the electric heating feed port; the vibration treatment part comprises a vibration box, a vibration feed port is arranged at one end of the vibration box, a vibration discharge port is arranged at the other end of the vibration box, the electric heating discharge port is connected to the vibration feed port through a front end conveying device, and the vibration discharge port is connected to the discharge part through a rear end conveying device; the discharge part is a finished product storage box.
[0006] Furthermore, an electric heating feed baffle is arranged in the electric heating feed port, an electric heating discharge baffle is arranged in the electric heating discharge port, and a temperature detector is arranged in the electric heating insulation box, and the temperature detector is electrically connected to the electric heating feed baffle and the electric heating discharge baffle.
[0007] Furthermore, the front-end conveying device includes a conveying box, a conveying belt is arranged in the conveying box, and a coolant is filled in the side wall of the conveying box.
[0008] Furthermore, a vibration device is arranged outside the vibration box, and steel balls or ceramic balls are filled in the vibration box.
[0009] Furthermore, the upper end of the feed bin is connected to a bin to be processed, an automatic feed baffle is provided at the bottom of the bin to be processed, a metering sensor is provided on the automatic feed baffle, and the metering sensor is electrically or signal-connected to the automatic feed baffle.
[0010] Furthermore, the feed bin is funnel-shaped with an inner diameter gradually decreasing from top to bottom.
[0011] The beneficial effects of the utility model are:
[0012] The welded carbide rotary file head is heated by the heat treatment unit, and the file head and the steel handle are deformed by high temperature heating to eliminate the internal stress for the first time. After the heating is completed, it is cooled by the front-end device and then enters the vibration unit for abrasive vibration treatment. The internal stress of the welding point is further released through resonance, thereby increasing the welding strength between the carbide rotary file head and the steel handle. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the structure of the utility model;
[0014] Figure 2 This is a schematic diagram of the welding of carbide rotary file heads.
[0015] 1. Material bin to be processed; 2. Automatic feed baffle; 3. Feed bin; 4. Electric heating feed port; 5. Electric heating insulation box; 6. Heating layer; 7. Insulation layer; 8. Electric heating discharge port; 9. Front conveyor; 10. Cooling liquid; 11. Vibration feed port; 12. Vibration box; 13. Vibration device; 14. Vibration discharge port; 15. Rear conveyor; 16. Discharge part; 17. Carbide rotary file head; 18. Welding layer; 19. Steel handle. DETAILED DESCRIPTION
[0016] The utility model is now described in detail with reference to the accompanying drawings:
[0017] Example 1: Figure 1-Figure 2As shown, a device for treating the welding aging of a cemented carbide rotary file head comprises a feeding part, a heat treatment part, a conveying part, a vibration treatment part and a discharging part 16 connected thereto from the front end to the rear end; the heat treatment part comprises an electric heating insulation box 7, an electric heating feeding port 4 is arranged on the top of the electric heating insulation box 7, an electric heating discharging port 8 is arranged on the bottom of the electric heating insulation box 7, a heating layer 6 is arranged on the inner wall of the electric heating insulation box 5, and an insulation layer 7 is arranged between the heating layer 6 and the inner wall of the electric heating insulation box 5; the feeding part comprises a feeding bin 3, and an outlet at the bottom of the feeding bin 3 is connected to the electric heating feeding port 4; the vibration treatment part comprises a vibration box 12, a vibration feeding port 11 is arranged at one end of the vibration box 12, a vibration discharging port 14 is arranged at the other end of the vibration box 12, the electric heating discharging port 8 is connected to the vibration feeding port 11 through a front end conveying device 9, and the vibration discharging port 14 is connected to the discharging part 16 through a rear end conveying device 15; the discharging part 16 is a finished product storage box.
[0018] An electric heating feed baffle is arranged in the electric heating feed port 4, an electric heating discharge baffle is arranged in the electric heating discharge port 8, and a temperature detector is arranged in the electric heating insulation box 5, and the temperature detector is electrically connected to the electric heating feed baffle and the electric heating discharge baffle.
[0019] The front-end conveying device comprises a conveying box, a conveying belt is arranged in the conveying box, and a cooling liquid 10 is filled in the side wall of the conveying box.
[0020] A vibration device 13 is provided outside the vibration box 12, and steel balls or ceramic balls are filled in the vibration box 12. The upper end of the feed bin 3 is connected to the material bin to be processed 1, and an automatic feed baffle 2 is provided at the bottom of the material bin to be processed 1. A metering sensor is provided on the automatic feed baffle 2, and the metering sensor is electrically connected or signal-connected to the automatic feed baffle 2. The feed bin 3 is funnel-shaped with an inner diameter gradually decreasing from top to bottom.
[0021] The bottom of the carbide rotary file head 17 and the top end of the steel handle 19 are ground flat, and then the top end of the steel handle is welded to the bottom of the carbide rotary file head. The welded carbide rotary file head is put into the device for aging treatment to eliminate the internal stress of the welding layer 18.
[0022] The welded carbide rotary file head is placed in the material bin 1 to be processed and slowly cooled for 4 hours until the temperature is 200-350°C. When the carbide rotary file head placed in the material bin 1 to be processed reaches the preset weight or the preset time, the automatic feeding baffle 2 is opened to allow the file head to be processed to enter the feeding bin 3. At this time, the electric heating insulation box 5 is started, and the heating layer 6 heats the electric heating insulation box 5. When the inside of the electric heating insulation box 5 reaches the preset temperature, the electric heating feeding baffle is opened, and the file head to be processed enters the electric heating insulation box 5 for heating. Low-temperature heating treatment or high-temperature heating treatment can be performed according to the material of the file head. When low-temperature heating treatment is required, the temperature range of the electric heating insulation box 5 is maintained at 100-200°C, and the heating time is generally 10-100 hours; when high-temperature heating treatment is required, the temperature of the electric heating insulation box 5 is maintained at 250-500°C, and the heating time is generally 1-48 hours.
[0023] When the processing time is reached, the electric heating discharge baffle is opened, and the carbide rotary file head enters the front end conveying device 9. The coolant in the side wall of the front end conveying device 9 brings out the temperature of the carbide rotary file head for cooling. When the carbide rotary file head reaches the tail end of the front end conveying device 9, the cooling is completed. At this time, the temperature of the carbide rotary file head is maintained below 100°C, and then it enters the vibration box 12 through the vibration feed port 11. The vibration device 13 is started to vibrate the vibration box 12. By setting the frequency of the vibration device 13, the vibration frequency of the steel ball or ceramic ball in the vibration box 12 resonates with the carbide rotary file head. The vibration treatment time is 0.5-1 hour, so that the internal stress of the weld is further released.
[0024] After the vibration treatment, the carbide rotary file head enters the rear-end conveying device 15 through the outlet of the vibration box 12, and finally enters the discharging part 16 to wait for the next process.
[0025] The utility model heats the welded carbide rotary file head through a heat treatment part, heats the file head and the steel handle at high temperature to deform them, thereby eliminating the internal stress for the first time, and after the heating is completed, cools them through a front end device and enters the vibration part for abrasive vibration treatment, further releases the internal stress at the welding point through resonance, thereby increasing the welding strength between the carbide rotary file head and the steel handle.
Claims
1. A device for treating a hard alloy rotary file head welding aging, characterized in that: It includes a feeding part, a heat treatment part, a conveying part, a vibration processing part and a discharging part which are connected from the front end to the rear end; the heat treatment part includes an electric heating insulation box, an electric heating feeding port is arranged on the top of the electric heating insulation box, an electric heating discharging port is arranged on the bottom of the electric heating insulation box, a heating layer is arranged on the inner wall of the electric heating insulation box, and an insulation layer is arranged between the heating layer and the inner wall of the electric heating insulation box; the feeding part includes a feeding bin, and the bottom outlet of the feeding bin is connected with the electric heating feeding port; the vibration processing part includes a vibration box, a vibration feeding port is arranged at one end of the vibration box, a vibration discharging port is arranged at the other end of the vibration box, the electric heating discharging port is connected to the vibration feeding port through a front end conveying device, and the vibration discharging port is connected to the discharging part through a rear end conveying device; the discharging part is a finished product storage box.
2. A device for treating a hard alloy rotary file head for welding aging as claimed in claim 1, characterized in that: An electric heating feed baffle is arranged in the electric heating feed port, an electric heating discharge baffle is arranged in the electric heating discharge port, and a temperature detector is arranged in the electric heating insulation box, and the temperature detector is electrically connected to the electric heating feed baffle and the electric heating discharge baffle.
3. A device for treating a hard alloy rotary file head for welding aging as claimed in claim 1, characterized in that: The front-end conveying device comprises a conveying box, a conveying belt is arranged in the conveying box, and a cooling liquid is filled in the side wall of the conveying box.
4. A device for treating a hard alloy rotary file head for welding aging as claimed in claim 1, characterized in that: A vibration device is arranged outside the vibration box, and steel balls or ceramic balls are filled in the vibration box.
5. A device for treating a hard alloy rotary file head for welding aging as claimed in claim 1, characterized in that: The upper end of the feed bin is connected to a bin to be processed, an automatic feed baffle is arranged at the bottom of the bin to be processed, a metering sensor is arranged on the automatic feed baffle, and the metering sensor is electrically connected or signal-connected to the automatic feed baffle.
6. A device for treating a hard alloy rotary file head during welding aging as claimed in claim 1, characterized in that: The feed bin is in the shape of a funnel with an inner diameter gradually decreasing from top to bottom.