A cooling water tank for welding experiments

Abstract

The utility model discloses a cooling water tank for welding experiment, including the water tank main part, the water tank main part includes the cooling tank and the drainage tank with the partition of middle part, is provided with overflow port on the partition, is provided with the lifting plate on the overflow port, is provided with the sieve basket for holding work piece on the cooling tank top, is provided with the water distribution pipe below, is provided with a plurality of shower nozzles on the water distribution pipe, is provided with the drain pipe below the drainage tank, still include the thermocouple of fixed in the welding spare surface, the utility model discloses structure, through rotatable water distribution pipe, has improved the uniformity of water temperature in the cooling box, through the lifting plate, can carry out effective control to liquid level, guarantees the cooling of welding process and after welding. Simultaneously through the control water inflow, to the change of temperature has played certain control function, has provided good guarantee for experiment.

Description

Technical Field

[0001] This utility model belongs to the technical field of welding testing devices, specifically relating to a cooling water tank for welding experiments. Background Technology

[0002] In the production process of steel plates, weldability testing is frequently required. For example, the "drop hammer test method for non-plastic transformation temperature of ferritic steel" involves welding. In welding procedure qualification and testing, in order to better test the welding effect, it is necessary to strictly control the temperature and changes during the welding and cooling processes. The cooling process of the welded specimen from high temperature to room temperature (especially the t8 / 5 cooling time from 800℃ to 500℃) has a decisive influence on its final metallographic structure and mechanical properties (such as toughness and strength).

[0003] Existing testing procedures typically employ either steel plate cooling or water tank cooling. Steel plate cooling results in slow cooling rates. Furthermore, existing cooling water tanks are generally simple in function, mostly providing only a constant-temperature, stagnant water environment, and cannot control the cooling rate of the weldment. This leads to poor repeatability and comparability of experimental data, making it difficult to simulate the cooling conditions required by specific welding process specifications. Utility Model Content

[0004] The purpose of this invention is to provide a cooling water tank for welding experiments, so as to overcome the shortcomings of the prior art and achieve uniform and controllable cooling of the weldment during the cooling process.

[0005] This utility model is achieved through the following technical solution: a cooling water tank for welding experiments, characterized in that: it includes a tank body, the tank body includes a cooling tank and a drainage tank separated by a partition in the middle, an overflow port is provided on the partition, and a lifting plate is provided on the overflow port; a sieve basket for holding workpieces is provided above the cooling tank, and a water distribution pipe is provided below the cooling tank, with multiple nozzles provided on the water distribution pipe; a drainage pipe is provided below the drainage tank; and a thermocouple is also included fixed to the surface of the weldment.

[0006] Furthermore: A lifting plate that cooperates with the overflow port is installed on the partition. The lifting plate is slidably engaged with the partition and rotates with the lower end of the lifting screw. The main body of the lifting screw is threadedly engaged with the lifting plate beam installed on the partition.

[0007] Furthermore, it also includes a weldment fixing assembly, which includes a T-shaped groove disposed on the side wall of the cooling tank and a fixing beam spanning above the cooling tank. The fixing beam is engaged with the T-shaped groove by T-bolts and has multiple threaded holes thereon, with fixing bolts with locking nuts disposed in the threaded holes.

[0008] Furthermore: the water distribution pipe is rotatably installed inside the cooling tank, and a swing arm is provided on the water distribution pipe; it also includes a reciprocating telescopic rod, the two ends of which are respectively hinged to the cooling tank and the swing arm.

[0009] The beneficial effects of this invention are as follows: The structure of this invention, through the rotatable water distribution pipe, improves the uniformity of water temperature in the cooling tank; the lifting plate allows for effective control of the liquid level, ensuring cooling during and after the welding process. Simultaneously, controlling the inlet water flow rate plays a certain role in controlling temperature changes, providing a good guarantee for the experiment. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0011] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0012] Figure 3 This is a schematic diagram of the assembly structure of the lifting plate of this utility model.

[0013] Figure 4 This is a front view of a portion of the structure of this utility model.

[0014] Explanation of the serial numbers in the diagram: 1 is the main body of the water tank, 2 is the partition plate, 3 is the cooling tank, 4 is the drainage tank, 5 is the overflow port, 6 is the lifting plate, 7 is the sieve basket, 8 is the water distribution pipe, 9 is the nozzle, 10 is the drainage pipe, 11 is the thermocouple, 12 is the lifting screw, 13 is the welded fixing assembly, 14 is the T-slot, 15 is the fixing beam, 16 is the T-bolt, 17 is the threaded hole, 18 is the lock nut, 19 is the fixing bolt, 20 is the swing arm, 21 is the reciprocating telescopic rod, 22 is the control valve, 23 is the welded part, 24 is the slide, 25 is the lifting plate crossbeam, 26 is the support block, 27 is the insertion slot, and 28 is the insertion fixing plate. Detailed Implementation

[0015] The preferred embodiment of this utility model will be described in further detail below with reference to the accompanying drawings. This section describes a specific embodiment of this utility model, but it should not be construed as limiting the scope of protection of this utility model.

[0016] Reference Appendix Figure 1-4This utility model provides a cooling water tank for welding experiments, including a tank body 1, which is divided into a cooling tank 3 and a drainage tank 4 by a partition 2 in the middle. An overflow port 5 is provided on the partition 2, and a lifting plate 6 is provided on the overflow port 5. The water level in the cooling tank can be adjusted by raising and lowering the lifting plate 6. A sieve basket 7 for holding workpieces is provided at the top inside the cooling tank 3, and a water distribution pipe 8 is provided at the bottom. The water distribution pipe is connected to a water source or a circulating water tank through a pipeline. An adjustable control valve 22 is provided on the pipeline. Multiple nozzles 9 are provided on the water distribution pipe 8, which are arranged in one or two rows. A drainage pipe 10 is provided below the drainage tank 4 and is connected to the circulating water tank or a drain pipeline. It also includes a thermocouple 11 welded and fixed to the surface of the workpiece 23 by a capacitor discharge spot welding machine. A V-shaped or straight weld joint can be provided between the two workpieces as needed, and the thermocouple is located near the weld joint.

[0017] Preferably, a support block 26 is provided inside the cooling tank 3, and an insertion groove 27 is provided through the support block. Inverted L-shaped insertion fixing plates 28 are provided on both sides or around the screen basket 7. The insertion fixing plates are inserted into the insertion groove to achieve stable installation of the screen basket.

[0018] Preferred: The sieve basket is bucket-shaped, with multiple water passage holes on the bottom and sides.

[0019] Preferably, a lifting plate 6 is provided on the partition 2 to cooperate with the overflow port 5. The lifting plate 6 and the partition 2 are slidably engaged through a sliding groove 24 provided on the partition and are rotatably engaged with a lifting screw 12. The lifting screw 12 is threadedly engaged with the lifting plate crossbeam 25 provided on the partition 2 and can be locked by a lock nut. The height of the lifting plate can be adjusted by rotating the lifting screw.

[0020] Preferably, it also includes a weldment fixing assembly 13, which includes a T-shaped groove 14 disposed on the side wall of the cooling tank 3 and a fixing beam 15 spanning above the cooling tank 3. The fixing beam 15 is engaged with the T-shaped groove 14 by a T-bolt 16 and has a plurality of threaded holes 17 thereon. A fixing bolt 19 with a locking nut 18 is disposed in the threaded hole 17.

[0021] Preferably, the water distribution pipe 8 is rotatably disposed inside the cooling tank 3, and a swing arm 20 is provided on the water distribution pipe 8; it also includes a reciprocating telescopic rod 21, the two ends of which are hinged to the cooling tank 3 and the swing arm 20 respectively. The free end of the reciprocating telescopic rod 21 can reciprocate and extend, thereby driving the water distribution pipe to reciprocate and rotate within a certain angle range through the swing arm, so that the incoming water can better mix with the water in the cooling tank and quickly achieve uniform temperature.

[0022] The working process of this utility model is as follows.

[0023] Place the two workpieces to be welded in the sieve basket. Move the two fixed beams above the workpieces, leaving space for welding operations. Secure the fixed beams to the cooling tank using T-bolts, then rotate the bolts to hold the workpieces in place and tighten the lock nuts. Open control valve 22 to inject water into the cooling tank through the water distribution pipe, while simultaneously adjusting the height of the lifting plate to control the liquid level. At the start of welding, maintain the liquid level at approximately half the height of the workpieces, ensuring it does not affect the weld joint position. After welding, readjust the height of the lifting plate until the liquid level covers the weld joint (2-5mm above the weld joint) and lock the lifting plate.

[0024] Observe the temperature changes. When the temperature drops faster than the ideal rate, reduce the opening of the control valve to decrease the water inflow, thus increasing the overall water temperature in the cooling tank. Conversely, when the temperature drops too slowly, increase the opening of the control valve to increase the water inflow, thus decreasing the overall water temperature in the cooling tank. For specimens of the same specifications, the cooling rate can also be controlled by adjusting the liquid level using a lifting plate. A higher liquid level results in faster cooling, and a lower liquid level results in slower cooling. When the temperature reaches the required level, stop the water inflow, lower the lifting plate, and drain the water from the cooling tank until the liquid level is below the screen basket. Remove the welding fixture and take out the workpiece.

[0025] In summary, the structure of this utility model can effectively control the cooling process of the weldment, providing a reliable experimental platform for welding process research.

Claims

1. A cooling water tank for welding experiments, characterized in that: The system includes a water tank body (1), which includes a cooling tank (3) and a drainage tank (4) separated by a partition (2) in the middle. An overflow port (5) is provided on the partition (2), and a lifting plate (6) is provided on the overflow port (5). A sieve basket (7) for holding workpieces is provided above the cooling tank (3), and a water distribution pipe (8) is provided below it. Multiple nozzles (9) are provided on the water distribution pipe (8). A drainage pipe (10) is provided below the drainage tank (4). It also includes thermocouples (11) fixed to the surface of the weldment.

2. The cooling water tank for welding experiments according to claim 1, characterized in that: A lifting plate (6) that cooperates with the overflow port (5) is installed on the partition (2). The lifting plate (6) slides with the partition (2) and rotates with the lower end of the lifting screw (12). The main body of the lifting screw (12) is threadedly connected with the lifting plate beam (25) installed on the partition (2).

3. A cooling water tank for welding experiments according to claim 1, characterized in that: It also includes a welding component fixing assembly (13), which includes a T-shaped groove (14) provided on the side wall of the cooling tank (3) and a fixing beam (15) spanning above the cooling tank (3). The fixing beam (15) is engaged with the T-shaped groove (14) by a T-bolt (16) and has multiple threaded holes (17) thereon. A fixing bolt (19) with a locking nut (18) is provided in the threaded hole (17).

4. A cooling water tank for welding experiments according to claim 1, characterized in that: The water distribution pipe (8) is rotatably installed inside the cooling tank (3), and a swing arm (20) is provided on the water distribution pipe (8); it also includes a reciprocating telescopic rod (21), the two ends of which are hinged to the cooling tank (3) and the swing arm (20) respectively.

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