A high-power hot forging and upsetting welding machine and its welding process

Abstract

The application discloses a high-power hot-state forging upsetting welding machine and a welding process thereof, which comprises an electrode, a clamp group is arranged above the electrode, a supporting table is arranged below the electrode and is used for supporting a welding object, a deslagging mechanism is arranged at the outlet of the supporting table, and a clamp group is arranged above the deslagging mechanism. The application adopts a brand-new material connection process, and the material temperature change at a welding position is controlled through monitoring in the whole process, so that better welding quality is achieved. Compared with the prior art, the application is not affected by the voltage fluctuation on site, the difference in environmental temperature and the change in air humidity and the like, and has better applicability.

Description

Technical Field

[0001] This invention relates to the field of welding technology, and in particular to a high-power hot forging welding machine and its welding process. Background Technology

[0002] Many conductive materials can be welded together by heating them to their melting point or even boiling point. The principle of welding is to convert electrical energy into heat energy (such as in an electric furnace in a steel plant). Various materials to be welded are continuously heated at the welding point until the temperature reaches the material's melting point. Then, an external force (forging force) is applied to this point. This external force can be designed to be applied multiple times with varying intervals and forging forces according to process requirements. Under the action of multiple external forging forces, the two materials are permanently welded together. The external force follows the Nm / s power formula.

[0003] To date, large-section welded components worldwide have been joined using either flash welding or non-flash welding techniques, but the weld quality is controlled primarily by the welding current. This traditional method cannot avoid the impact of environmental changes on the weld quality. For example, fluctuations in on-site power supply voltage, differences in ambient temperature, and variations in air humidity can significantly affect the stability of the weld material. Summary of the Invention

[0004] To address the aforementioned technical problems, a high-power hot forging and upsetting welding machine and its welding process are provided.

[0005] To achieve the above objectives, in a preferred embodiment of the present invention, the present invention is configured to include an electrode, a clamping assembly above the electrode, a support platform below the electrode for supporting the weld, a slag removal mechanism at the outlet of the support platform, and a clamping assembly above the slag removal mechanism.

[0006] In a preferred embodiment of the present invention, a roller body is provided at the inlet of the support platform, and two rows of guide wheels are provided on the rear side of the roller body. The guide wheels are arranged in a transverse manner, and a gap channel is provided between the two guide wheels.

[0007] In a preferred embodiment of the present invention, the support seats on both sides of the roller are connected to the lifting cylinder.

[0008] In a preferred embodiment of the present invention, the slag removal mechanism includes slag removal blocks, the slag removal blocks are arranged in two symmetrical sets, and notches are opened on the mating side walls. After mating, the notches are in the shape of an I-beam. Both sides of the slag removal blocks are connected to telescopic cylinders.

[0009] In a preferred embodiment of the present invention, a roller and a guide wheel are provided at the outlet of the slag removal mechanism, and the roller and guide wheel have the same structure as those at the inlet of the support platform.

[0010] In a preferred embodiment of the present invention, a nucleation grain refiner is provided below the outlet of the slag removal mechanism.

[0011] In a preferred embodiment of the present invention, the electrode is further configured such that a fusion transformer is provided on the back side for control, and a cooling system is provided inside the fusion transformer for cooling.

[0012] In addition, a high-power hot forging and welding process is provided, including the following steps: Step 1: Place the welded material on a support platform and apply pressure to clamp the welded material; Step 2: Monitor the temperature of the weld in real time, and perform multiple forging and welding operations at multiple time periods when the temperature reaches 1560 degrees; Step 3: After the last forging and welding operation, the heating begins to decrease uniformly until it stops; Step 4: Remove burrs from the welded area.

[0013] In a preferred embodiment of the present invention, the second step of the invention may be further configured such that the multiple forging and upsetting processes include a first forging, a second forging, and a third forging. The first forging lasts for 25 ms and is continuously heated. When the temperature at the weld joint reaches 1650 degrees, a second forging lasts for 18 ms with a 10 ms interval is performed. After the second forging, the heating begins to decrease uniformly. When the temperature decreases to 8 seconds, a third forging lasts for 5 seconds begins. The temperature decrease stops when it reaches 730 degrees. A nucleus grain refiner is used for phase fusion between the second and third forging.

[0014] In a preferred embodiment of the present invention, the burr removal step in step four is further configured as follows: the two slag removal blocks are closed together, the welded material is placed in the closed notch, and the slag removal blocks move at a uniform speed to remove the metal burrs caused by the heating and welding forging.

[0015] Beneficial effects: The high-power hot forging and welding machine and its welding process of the present invention adopt a brand-new material connection process, and the material temperature change at the welding point is controlled by monitoring throughout the process to achieve better welding quality. Compared with the existing technology, this solution is not affected by on-site voltage fluctuations, differences in ambient temperature, and changes in air humidity, etc., and has better applicability. Attached Figure Description

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a schematic diagram showing the location of the cooling system of the present invention.

[0019] Figure 3 This is a three-dimensional schematic diagram of the present invention.

[0020] Figure 4 This is an enlarged schematic diagram of part A of the present invention.

[0021] Figure 5 This is an enlarged schematic diagram of part B of the present invention.

[0022] In the diagram, 1 is the clamping cylinder; 2 is the clamping assembly; 3 is the electrode; 4 is the positioning mechanism; 5 is the slag removal mechanism; 6 is the nucleus grain refiner; 7 is the welding transformer; 8 is the cooling system; 9 is the roller; 10 is the guide wheel; 11 is the slag removal block; and 12 is the telescopic cylinder. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0024] like Figure 1-5 As shown, a high-power hot forging and welding machine includes an electrode 3, a clamping assembly 2 above the electrode 3, and a support platform below the electrode 3 for supporting the material to be welded. A slag removal mechanism 5 is located at the outlet of the support platform, and the clamping assembly 2 is located above the slag removal mechanism 5. In use, the material to be welded is first clamped and pressed by the clamping assembly 2, and then heated and welded by the electrode. The slag and burrs generated after welding are removed by displacement by the slag removal mechanism 5.

[0025] A roller 9 is provided at the inlet of the support platform, and two rows of guide wheels 10 are provided on the rear side of the roller 9. The wheels of the guide wheels 10 are arranged in a horizontal direction, and a gap channel is provided between the two guide wheels 10. The gap channel is used to place the welded material and facilitates the conveying of the welded material.

[0026] The support seats on both sides of the roller 9 are connected to the lifting cylinder, and the lifting roller can control the height of the welded material.

[0027] The slag removal mechanism includes two symmetrical sets of slag removal blocks 11, with notches on the mating side walls. After mating, the notches are in the shape of an I-beam. Both sides of the slag removal blocks 11 are connected to telescopic cylinders 12, which can remove slag or burrs when moving.

[0028] A roller and a guide wheel are provided at the outlet of the slag removal mechanism 5, and the roller and guide wheel have the same structure as those at the inlet of the support platform.

[0029] Below the outlet of the slag removal mechanism 5, a nucleus grain refiner 6 is provided. Under the action of the compensator, the grains of the weld material at the weld joint are fully fused together, achieving permanent weld joint.

[0030] A welding transformer 7 is installed on the back of the electrode 3 for control, and a cooling system 8 is installed inside the welding transformer 7 to cool down and prevent the internal temperature from getting too high.

[0031] In addition, there is a high-power hot forging and welding process, which includes the following steps: Step 1: Place the material to be welded on a support platform and apply pressure to clamp it; Step 2: Monitor the temperature of the weld in real time, and perform multiple forging and welding operations at multiple time periods when the temperature reaches 1560 degrees; Step 3: After the last forging and welding operation, the heating is gradually reduced until it stops; Step 4: Remove burrs from the weld.

[0032] In step two, the multiple forging and upsetting processes include a first forging, a second forging, and a third forging. The first forging lasts for 25 ms and is continuously heated. When the temperature at the weld joint reaches 1650 degrees, a second forging lasts for 18 ms with a 10 ms interval is performed. After the second forging, the heating begins to decrease uniformly. When the temperature decreases to 8 seconds, a third forging lasts for 5 seconds begins. The temperature decrease stops when it reaches 730 degrees. A nucleus grain refiner is used for phase fusion between the second and third forging.

[0033] The burr removal step in step four involves closing the two slag removal blocks together, placing the welded material inside the closed gap, and then moving the slag removal blocks at a uniform speed to remove the metal burrs caused by the heated welding and forging process.

[0034] It should be noted that in this article, relational terms such as first and second are used only to distinguish one entity from another, and do not necessarily require or imply any such actual relationship or order between these entities.

[0035] The examples above are merely illustrative of the present invention and do not constitute a limitation on the scope of protection of the present invention. All designs that are the same as or similar to the present invention are within the scope of protection of the present invention.

Claims

1. A welding process of a high-power hot-state forging upsetting welding machine, using a high-power hot-state forging upsetting welding machine, a clamp group (2) is arranged above the electrode (3) of the high-power hot-state forging upsetting welding machine, a supporting table is arranged below the electrode (3) for supporting the welding object, a deslagging mechanism (5) is arranged at the outlet of the supporting table, and a clamp group (2) machine is arranged above the deslagging mechanism (5), a roller body (9) is arranged at the inlet of the supporting table, two rows of guide wheels (10) are arranged at the rear side of the roller body (9), the wheel bodies of the guide wheels (10) are arranged transversely, and a gap channel is arranged between the two guide wheels (10), and the supporting seats on both sides of the roller body (9) are connected with lifting cylinders, characterized in that, The method comprises the following steps: Step one: place the welding material on the support table and clamp it by pressing; Step two: monitor the temperature of the welding site in real time and perform multiple forging passes when the temperature reaches 1560 degrees; Step three: after the last forging pass, gradually decrease the temperature until it stops; Step four: remove the burrs from the welding site. In step two, the multiple forging passes include one, two, and three forging passes. The duration of the first forging pass is 25 ms, and the temperature is continuously raised. When the temperature of the welding site reaches 1650 degrees, perform the second forging pass with a duration of 18 ms and an interval of 10 ms. After the second forging pass, gradually decrease the temperature until it reaches 730 degrees. Start the third forging pass with a duration of 5 seconds when the temperature decreases to 8 seconds. Stop decreasing the temperature when the temperature decreases to 730 degrees. Use a fusion core grain refiner between the second and third forging passes to perform phase fusion.

2. The welding process of a high-power hot-state upsetting-forging machine according to claim 1, characterized in that, In step four, the burr removal step is to fold the two sides of the slag removal block, place the welding material in the gap, and move the slag removal block at a uniform speed to remove the metal burrs caused by heating and welding.

3. The welding process of a high-power hot-state upsetting-forging machine according to claim 1, characterized in that, The slag removal mechanism includes two symmetrically arranged slag removal blocks (11) with a gap on the fitting side wall. After fitting, the gap is H-shaped. The two sides of the slag removal block (11) are connected to the telescopic cylinder (12).

4. The welding process of a high-power hot upsetter as claimed in claim 3, wherein, A roller and a guide wheel are arranged at the outlet of the slag removal mechanism (5), which have the same structure as the structure at the inlet of the support table.

5. The welding process of a high-power hot upsetter as claimed in claim 1, wherein, A fusion core grain refiner (6) is arranged below the outlet of the slag removal mechanism (5).

6. The welding process of a high-power hot upsetter as claimed in claim 1, wherein, The back of the electrode (3) is provided with a welding transformer (7) for control, and the welding transformer (7) is provided with a cooling system (8) for cooling.

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