A welding process to prevent distortion of composite wear plate

Abstract

This invention discloses a welding process to prevent deformation of composite wear-resistant plates, specifically including the following steps: Step 1, sample selection; Step 2, pressure testing; Step 3, leveling and tilting; Step 4, welding; and Step 5, data recording. This invention relates to the field of composite wear-resistant plate processing technology. This welding process to prevent deformation of composite wear-resistant plates involves cutting measurement samples proportionally from the composite wear-resistant plates to be welded. Using a measuring column and a first pressure sensor, the deformation pressure exerted on the two welded samples is measured and used as a standard pressure. The pressure test is then used to obtain the tilt angle required for welding the corresponding composite wear-resistant plates. This allows the two composite wear-resistant plates to be placed according to the tested tilt angle before welding, ensuring that the direction of deformation after welding is opposite to and the value is equal to the deformation before welding, thus achieving minimal deformation or even complete deformation reduction.

Description

Technical Field

[0001] This invention relates to the field of composite wear-resistant plate processing technology, specifically a welding process to prevent deformation of composite wear-resistant plates. Background Technology

[0002] Composite wear-resistant steel plates are widely used in industries such as metallurgy, building materials, chemicals, and power. They can effectively reduce the impact and wear of materials, extending the service life of equipment components. Utilizing the weldability of composite wear-resistant steel plates, large or structurally complex components can be fabricated according to drawings or required dimensions.

[0003] Traditional manufacturing methods involve assembling pre-cut composite wear-resistant plates according to blueprints and then welding them. Due to significant differences in the chemical composition and properties of the wear-resistant layer, substrate, and welding materials, substantial stress concentration occurs at the weld joints. This causes angular and bending deformations in the wear-resistant plate components due to welding stress, leading to cracks in the wear-resistant layer. Subsequent correction of the deformed areas is necessary, typically using heat straightening or mechanical straightening methods. Heat straightening can eliminate significant shape deviations but can alter the crystal structure of the heated areas, affecting the component's mechanical properties. Mechanical straightening methods include static pressure straightening and hammering; however, excessive mechanical force or impact can cause cracks in the wear-resistant layer, and in severe cases, localized peeling. Conversely, insufficient force will fail to achieve the desired correction, resulting in low work efficiency. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a welding process to prevent deformation of composite wear-resistant plates, solving the problem that conventional composite wear-resistant plates are prone to deformation during welding, and that mechanical correction after deformation can easily reduce the quality of the composite wear-resistant plates.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a welding process for preventing deformation of composite wear-resistant plates, specifically including the following steps:

[0006] Step 1, Sample Selection: Divide the composite wear-resistant plate to be welded into equal proportions along the direction perpendicular to the welding edge, and cut it according to the proportions to obtain several small composite wear-resistant plates as measurement samples;

[0007] Step 2, Pressure Test: Place the two measurement samples from Step 1 on the lifting test platform, raise the lifting test platform so that the measurement samples are in contact with the bottom of the measuring column, and then weld the two measurement samples. During the welding process, the two measurement samples deform and tilt due to stress changes, causing the measurement samples to press upward against the measuring column with the first pressure sensor. After the welding is completed, record the pressure value measured by the first pressure sensor.

[0008] Step 3, Leveling and Tilting: Take another measurement sample, tilt it at a certain angle, and use the pressure value measured in Step 2 as the standard pressure. Control the pressure application component to squeeze the tilted measurement sample according to the standard pressure. Observe whether the measurement sample returns to a horizontal state. If yes, record the tilt angle under the standard pressure. If no, adjust the tilt angle of the measurement sample until the measurement sample returns to a horizontal state under the action of the standard pressure. Record the tilt angle of the measurement sample before it returns to a horizontal state.

[0009] Step 4, Welding: Take two composite wear-resistant plates to be welded, place them at an angle according to the angle obtained in Step 3, and then weld them to obtain a welded part that is horizontal after welding.

[0010] Step 5: Data Recording: Record the thickness of the wear-resistant layer and the steel plate in the composite wear-resistant plate to be welded, and record the welding material to obtain the tilt angle of the corresponding composite wear-resistant plate and welding material welding.

[0011] By adopting the above technical solution, measurement samples are cut out proportionally from the composite wear-resistant plates to be welded. The pressure exerted by the deformation of the two measurement samples after welding is measured using the cooperation of the measuring column and the first pressure sensor. This measured pressure is used as the standard pressure. By pressing a new measurement sample with the standard pressure, the required tilt angle for welding the corresponding composite wear-resistant plates can be obtained. This allows the two composite wear-resistant plates to be placed at the tested tilt angle before welding, so that the direction of deformation after welding is opposite to the deformation before welding and the values ​​are equal, achieving the goal of small deformation or even no deformation.

[0012] The invention is further configured such that: the lifting detection platform includes a base, and movable platforms are slidably installed on both the left and right sides of the base through guide rails, wherein four guide rails are provided, two guide rails are fixedly installed on one side of the movable platform, and movable holes adapted to the guide rails are opened on the front and rear sides of both the left and right sides of the base; a first electric telescopic rod is fixedly installed on the top of the base, and a first receiving platform is fixedly installed on the telescopic end of the first electric telescopic rod; a second electric telescopic rod is fixedly installed on the top of each of the two movable platforms, and a second receiving platform is fixedly installed on the telescopic end of the second electric telescopic rod; when tilting the measurement sample in step three, the measurement sample is placed on the first receiving platform and the second receiving platform, and then the second electric telescopic rod is controlled to retract, thereby adjusting the tilt angle of the measurement sample.

[0013] By adopting the above technical solution, the placement and tilt adjustment of the measurement sample can be realized by using the cooperation of the first electric telescopic rod and two second electric telescopic rods. This not only makes the sample easy to use, but also provides convenience for deformation and pressure testing.

[0014] The invention is further configured such that: the rear parts of the left and right sides of the top of the base are fixedly connected to the mounting plates by connecting brackets, the bottom of the mounting plates are fixedly installed with mounting cylinders, the first pressure sensor is fixedly installed at the top of the inner cavity of the mounting cylinder, the bottom of the first pressure sensor is fixedly connected with a balance spring, the bottom of the balance spring is fixedly connected to the top of the measuring column, and the outer surface of the measuring column is in sliding contact with the inside of the mounting cylinder, wherein the balance spring suspends the measuring column and maintains a balanced state, and when the measuring column is subjected to an upward compressive force, the pressure balance spring is compressed to compress the first pressure sensor.

[0015] By adopting the above technical solution and using the setting of the balance spring, the measuring column is pulled so that when the measuring column is in a suspended state, it will not exert pressure on the measuring sample, thereby avoiding the measuring column from affecting the measurement results.

[0016] The present invention is further configured such that: the pressure application component includes an I-shaped block and a third electric telescopic rod, the third electric telescopic rod is inserted through and fixedly installed in the I-shaped block, and a second pressure sensor is fixedly connected to the telescopic end of the third electric telescopic rod; the I-shaped block is slidably installed between two assembly plates, and limit stops are fixedly connected to the front and rear sides of the two assembly plates by bolts.

[0017] By adopting the above technical solution, the I-shaped block slidably installed between the two assembly plates is used as a carrier, allowing the third electric telescopic rod and the second pressure sensor to slide between the two assembly plates. This provides sufficient space for welding the two test samples, while the sliding adjustment facilitates the leveling and tilting process, making it simple and convenient to use.

[0018] The present invention is further configured such that: in step two, two test samples are placed on the first receiving platform, and the contact area between the test samples and the top edge line of the first receiving platform is marked as a detection line.

[0019] The present invention is further configured such that: in step three, when the pressure application component squeezes the tilted measurement sample according to the standard pressure, a line is drawn on another measurement sample according to the position of the detection line, and then the line on the measurement sample is aligned with the top edge of the first receiving platform.

[0020] The present invention is further configured such that friction pads are embedded and fixed on both the left and right sides of the top of the second receiving platform, wherein the left and right sides of the top of the second receiving platform are provided with reserved slots, and the friction pads are embedded in the reserved slots.

[0021] This invention provides a welding process to prevent deformation of composite wear-resistant plates. It has the following beneficial effects:

[0022] (1) The welding process for preventing deformation of composite wear-resistant plates involves cutting out measurement samples from the composite wear-resistant plates to be welded according to a certain ratio, and using the cooperation of a measuring column and a first pressure sensor to measure the pressure that causes deformation of the two measurement samples after welding. This pressure is used as a standard pressure. By pressing a new measurement sample according to the standard pressure, the required tilt angle for welding the corresponding composite wear-resistant plates can be obtained. This allows the two composite wear-resistant plates to be welded to be placed according to the tested tilt angle before welding, so that the direction of deformation after welding is opposite to the deformation before welding and the values ​​are equal, thus achieving the purpose of small deformation or even deformation.

[0023] (2) The welding process for preventing deformation of the composite wear-resistant plate utilizes the cooperation of the first electric telescopic rod and two second electric telescopic rods to realize the placement and tilt adjustment of the measurement sample. It is convenient to use and provides convenience for deformation pressure testing of the measurement sample. The setting of the balance spring realizes the traction of the measurement column, so that the measurement column will not exert pressure on the measurement sample when it is in a suspended state, thereby avoiding the measurement column from affecting the measurement results.

[0024] (3) The welding process for preventing deformation of composite wear-resistant plates utilizes an I-shaped block that is slidably installed between two assembly plates as a carrier, allowing the third electric telescopic rod and the second pressure sensor to slide between the two assembly plates. This provides sufficient space for welding the two test samples, while the sliding adjustment facilitates the leveling and tilting steps. It is simple and convenient to use. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the process of the present invention;

[0026] Figure 2 This is a schematic diagram of the external structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the pressure application component of the present invention;

[0028] Figure 4 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A;

[0029] Figure 5 This is a schematic diagram of the internal structure of the mounting cylinder of the present invention;

[0030] Figure 6 This is a schematic diagram of the structure of the test sample of this invention when it is laid flat;

[0031] Figure 7 This is a schematic diagram of the structure of the test sample of the present invention when it is placed at an angle;

[0032] Figure 8This is a schematic diagram showing the proportional division of the composite wear-resistant plate to be welded according to the present invention.

[0033] In the diagram, 1. Lifting detection platform; 2. Measuring column; 3. First pressure sensor; 4. Pressure application component; 5. Base; 6. Moving platform; 7. First electric telescopic rod; 8. First receiving platform; 9. Second electric telescopic rod; 10. Second receiving platform; 11. Assembly plate; 12. Mounting cylinder; 13. Balance spring; 14. I-shaped block; 15. Third electric telescopic rod; 16. Second pressure sensor; 17. Limiting stop bar; 18. Friction pad. Detailed Implementation

[0034] 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 scope of protection of the present invention.

[0035] Please see Figure 1-8 This invention provides a technical solution: a welding process to prevent deformation of composite wear-resistant plates, specifically including the following steps:

[0036] Step 1: Sample Selection: Divide the composite wear-resistant plate to be welded into equal proportions along the direction perpendicular to the welding edge, as shown in the attached diagram. Figure 8 As shown, attached Figure 8 A composite wear-resistant plate to be welded was displayed, with... Figure 8 The left or right side of the composite wear-resistant plate to be welded is shown, and the marking method is as follows: Figure 8 The dashed lines at the vertical welding edge are shown, and the plates are cut to scale to obtain several small composite wear-resistant plates as measurement samples.

[0037] Step 2, Stress Test: As attached Figure 6As shown, the first electric telescopic rod 7 and the second electric telescopic rod 9 are controlled to extend and retract until the top of the first receiving platform 8 and the top of the second receiving platform 10 are on the same horizontal plane. A measurement sample from step one is placed on the left side of the first receiving platform 8 and the second receiving platform 10 set on the left side. A measurement sample from step one is placed on the right side of the first receiving platform 8 and the second receiving platform 10 set on the right side. During the process, the part of the test sample that contacts the top edge line of the first receiving platform 8 is marked as a detection line. Then, the first electric telescopic rod 7 and the second electric telescopic rod 9 are controlled to extend so that the composite wear-resistant plate to be welded contacts the bottom end of the measuring column 2. Welding material is added between the two composite wear-resistant plates to be welded for welding. During the welding process, the two measurement samples deform and tilt due to stress changes, causing the measurement samples to press upward against the measuring column 2. The measuring column 2 presses upward against the balance spring 13, which in turn presses against the first pressure sensor 3. After the welding is completed, the pressure value measured by the first pressure sensor 3 is recorded.

[0038] Step 3, Leveling and Tilting: After obtaining the pressure value in Step 2, remove the two welded measurement samples and take another measurement sample. Draw a line on the other measurement sample according to the detection line position. Place the measurement sample on the first receiving platform 8 and the second receiving platform 10. Control the second electric telescopic rod 9 to retract, thereby adjusting the tilt angle of the measurement sample. Then, align the line on the measurement sample with the top edge of the first receiving platform 8. Using the pressure value measured in Step 2 as the standard pressure, pull the I-shaped block 14 forward, causing the third electric telescopic rod 15 to slide forward. Then, control the third electric telescopic rod 15 to extend, so that the second pressure sensor 16 contacts the tilted measurement sample until the second pressure sensor 16 reaches the standard pressure. Observe whether the measurement sample returns to a horizontal state. If yes, record the tilt angle under the standard pressure. If no, repeat the above operation to adjust the tilt angle of the measurement sample until the measurement sample returns to a horizontal state under the action of the standard pressure. Record the tilt angle of the measurement sample before it returns to a horizontal state.

[0039] Step 4, Welding: Take two composite wear-resistant plates to be welded, place them at an angle according to the angle obtained in Step 3, and then weld them to obtain a welded part that is horizontal after welding.

[0040] Step 5: Data Recording: Record the thickness of the wear-resistant layer and the steel plate in the composite wear-resistant plate to be welded, and record the welding material to obtain the tilt angle of the corresponding composite wear-resistant plate and welding material welding.

[0041] In summary, this invention causes a certain deformation of the composite wear-resistant plate before welding. During welding, based on the tilt angle obtained from the test, the direction of deformation after welding is opposite to that before welding and the values ​​are equal, thereby achieving the goal of small overall deformation or even no deformation of the composite wear-resistant plate after welding.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding process for preventing deformation of composite wear-resistant plates, characterized in that: Specifically, the following steps are included: Step 1, Sample Selection: Divide the composite wear-resistant plate to be welded into equal proportions along the direction perpendicular to the welding edge, and cut it according to the proportions to obtain several small composite wear-resistant plates as measurement samples; Step 2, Pressure Test: Place the two measurement samples from Step 1 on the lifting test platform (1), raise the lifting test platform (1) so that the measurement samples are attached to the bottom of the measuring column (2), and then weld the two measurement samples. During the welding process, the two measurement samples deform and tilt due to stress changes, causing the measurement samples to press upward against the measuring column (2) with the first pressure sensor (3). After the welding is completed, record the pressure value measured by the first pressure sensor (3). Step 3, Leveling and tilting: Take another measurement sample, tilt it at a certain angle, and use the pressure value measured in step 2 as the standard pressure. Control the pressure application component (4) to squeeze the tilted measurement sample according to the standard pressure. Observe whether the measurement sample returns to a horizontal state. If yes, record the tilt angle under the standard pressure. If no, adjust the tilt angle of the measurement sample until the measurement sample returns to a horizontal state under the action of the standard pressure. Record the tilt angle of the measurement sample before it returns to a horizontal state. Step 4, Welding: Take two composite wear-resistant plates to be welded, place them at an angle according to the angle obtained in Step 3, and then weld them to obtain a welded part that is horizontal after welding. Step 5: Data Recording: Record the thickness of the wear-resistant layer and the steel plate in the composite wear-resistant plate to be welded, and record the welding material to obtain the tilt angle of the corresponding composite wear-resistant plate and welding material welding. The lifting testing platform (1) includes a base (5). On both sides of the base (5), a movable platform (6) is slidably installed through a guide rail. A first electric telescopic rod (7) is fixedly installed on the top of the base (5), and a first receiving platform (8) is fixedly installed on the telescopic end of the first electric telescopic rod (7). A second electric telescopic rod (9) is fixedly installed on the top of the two movable platforms (6), and a second receiving platform (10) is fixedly installed on the telescopic end of the second electric telescopic rod (9). The rear of the top left and right sides of the base (5) are fixedly connected to the assembly plate (11) by the connecting frame. The bottom of the assembly plate (11) is fixedly installed with the mounting cylinder (12). The first pressure sensor (3) is fixedly installed on the top of the inner cavity of the mounting cylinder (12). The bottom of the first pressure sensor (3) is fixedly connected with the balance spring (13). The bottom of the balance spring (13) is fixedly connected to the top of the measuring column (2), and the outer surface of the measuring column (2) slides in contact with the inside of the mounting cylinder (12). The pressure application component (4) includes an I-shaped block (14) and a third electric telescopic rod (15). The third electric telescopic rod (15) passes through and is fixedly installed in the I-shaped block (14), and a second pressure sensor (16) is fixedly connected to the telescopic end of the third electric telescopic rod (15). The I-shaped block (14) is slidably installed between two assembly plates (11), and limit stops (17) are fixedly connected to the front and rear sides of the two assembly plates (11) by bolts. In step two, two test samples are placed on the first receiving platform (8), and the part of the test sample that contacts the top edge of the first receiving platform (8) is marked with a line as a detection line; In step three, when the pressure application component (4) squeezes the tilted measurement sample according to the standard pressure, a line is drawn on another measurement sample according to the position of the detection line, and then the line on the measurement sample is attached to the top edge of the first receiving platform (8).

2. The welding process for preventing deformation of composite wear-resistant plates according to claim 1, characterized in that: In step three, when tilting the measurement sample, the measurement sample is placed on the first receiving platform (8) and the second receiving platform (10), and then the second electric telescopic rod (9) is controlled to retract, thereby adjusting the tilt angle of the measurement sample.

3. The welding process for preventing deformation of composite wear-resistant plates according to claim 1, characterized in that: Friction pads (18) are embedded and fixed on both the left and right sides of the top of the second receiving platform (10).

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