Tool for weakening welding stress of super-long tubular column

Abstract

The utility model provides a tool for weakening welding stress of a super-long tubular column, which comprises a cylindrical stress weakening cavity, the rear end of the cylindrical stress weakening cavity is connected with a stress weakening cavity controller, the front side and the rear side of the cylindrical stress weakening cavity are respectively provided with a stress weakening cavity heat preservation sleeve bag, and the stress weakening cavity controller is connected with the stress weakening cavity controller. The stress weakening cavity heat preservation sleeve bag is sleeved with a heat preservation sleeve bag rolling belt. The cylindrical stress weakening cavity comprises a stress weakening heat transfer cylinder which is arranged on the innermost layer and is directly attached to the super-long tubular column, and the outer surface of the stress weakening heat transfer cylinder is wrapped with a stress weakening heating pipe; the stress weakening work is carried out on the welding position of the super-long tubular column in the two modes of electric heating and ultrasonic vibration, distribution and retention of welding stress are effectively reduced, the welding stress at the welding position is promoted to be slowly dispersed or weakened and dissipated through aging vibration and electric heating, weakening of the welding stress at the welding position of the super-long tubular column is guaranteed, and the welding quality is improved. And the welding firmness degree and stability of the super-long tubular column are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel structure buildings, and particularly relates to a tooling for weakening the welding stress of an ultra-long circular pipe column. Background Technique

[0002] When welding butt joint weldments of austenitic stainless steel, welding deformation may cause large or high-precision parts to deviate from the expected geometric tolerance requirements, and even cause gaps, misalignments or overlaps during subsequent assembly processes. Tensile residual stress near the welding area will increase the possibility of fatigue damage, stress corrosion cracking and brittle fracture. Local deformation correction and residual stress elimination of weldments are important links in the post-welding treatment process. Common correction processes include mechanical peening, flame correction and induction heating correction, etc. However, deformation and stress coexist. If the orthopedic external force and temperature are not properly controlled, new internal stress and harmful phases will be generated, and even the mechanical properties of the material will be reduced. Residual stress is usually eliminated by heat treatment and vibration method, which makes the welding deformation correction and residual stress elimination require multiple different process procedures, and the implementation process is relatively cumbersome.

[0003] Heat treatment for stress relief is the simplest and most effective method. To completely eliminate the residual stress after welding of austenitic stainless steel, solution treatment at 950°C to 1150°C is generally selected, and water quenching is required for cooling. Otherwise, carbides will precipitate during slow cooling, but water quenching will also introduce new cooling stress. The cost of overall post-weld heat treatment for large welded parts is extremely high, and it is rarely used in engineering applications. In addition, the precipitation temperature of σ phase and carbides in austenitic stainless steel is about 600°C to 950°C. When stress relief treatment is carried out at this temperature, there is a risk of sensitization and intergranular corrosion. When stress relief treatment is carried out at 400°C to 600°C, if the holding time is too long, carbides will also precipitate at the grain boundaries, but if the holding time is too short, the welding residual stress cannot be fully eliminated. When the temperature is below 400°C, the effect of eliminating welding residual stress is not obvious. In summary, when correcting the welding deformation of austenitic stainless steel, the newly introduced orthopedic stress needs to be considered, and when eliminating the residual stress, attention needs to be paid to the dimensional stability during the heat treatment process and the mechanical properties of austenitic stainless steel. In addition, the implementation efficiency and cost requirements of engineering applications also need to be taken into account.

[0004] However, it is difficult to obtain the best welding stress weakening or elimination effect for ultra-long circular pipe columns only by using heat treatment method. Other methods need to be combined to weaken or eliminate the welding stress through multiple methods in combination to achieve the best effect. Content of the Utility Model

[0005] The purpose of the present utility model is to provide a tooling for weakening the welding stress of an ultra-long circular pipe column. By fixing an ultra-thick plate special-shaped component at three points and weakening the stress at the welding joint of the ultra-long circular pipe column through two forms of electric heating and ultrasonic vibration, the distribution and retention of the welding stress are effectively reduced. Through aging vibration and electric heating, the welding stress at the welding joint is slowly dispersed or weakened and dissipated, ensuring the weakening of the welding stress at the welding joint of the ultra-long circular pipe column, and greatly improving the welding firmness and stability of the ultra-long circular pipe column.

[0006] To achieve the purpose of the present utility model, the technical solution adopted is:

[0007] A tooling for weakening the welding stress of an ultra-long circular pipe column includes a cylindrical stress weakening cavity. A stress weakening cavity controller is connected to the rear end of the cylindrical stress weakening cavity. Stress weakening cavity heat preservation sleeve bags are installed on both the front and rear sides of the cylindrical stress weakening cavity, and heat preservation sleeve bag rolling tapes are sleeved on the stress weakening cavity heat preservation sleeve bags; the cylindrical stress weakening cavity includes a stress weakening heat transfer cylinder directly attached to the ultra-long circular pipe column at the innermost layer. The outer surface of the stress weakening heat transfer cylinder is wrapped with a stress weakening heating pipe, and the surface of the stress weakening heating pipe is wrapped with a heating pipe heat insulation cylinder; a number of ultrasonic vibration balls are evenly distributed on the outer surface of the heating pipe heat insulation cylinder, and the ultrasonic vibration balls are connected in series through vibration ball control lines. A heating temperature sensing probe passing through the heating pipe heat insulation cylinder, the stress weakening heat transfer cylinder, and the stress weakening heating pipe is installed inside the cylindrical stress weakening cavity.

[0008] Preferably, a controller charging plug is installed on one side of the stress weakening cavity controller, and the other side is directly connected to the cylindrical stress weakening cavity through a weakening cavity conducting wire and a weakening cavity control line.

[0009] Preferably, a weakening cavity control switch is installed on the cylindrical stress weakening cavity, and the weakening cavity control switch is electrically connected to the stress weakening cavity controller through a weakening cavity conducting wire and a weakening cavity control line.

[0010] Preferably, the cylindrical stress weakening cavity further includes a weakening cavity protective housing. A number of ultrasonic vibration balls are evenly distributed between the weakening cavity protective housing and the heating pipe heat insulation cylinder, and a solid soft and sound-transmitting glue is filled between the ultrasonic vibration balls.

[0011] Preferably, a heating pipe conducting wire is connected to the tail of the stress weakening heating pipe, and the heating pipe conducting wire and the vibration ball control line are electrically connected to the stress weakening cavity controller through the weakening cavity control switch.

[0012] Preferably, the stress weakening heating pipe includes a heating pipe heating wire, the outer surface of the heating pipe heating wire is wrapped with a heating pipe heat-conducting copper layer, and the outer surface of the heating pipe heat-conducting copper layer is wrapped with a heating pipe heat-conducting graphene layer.

[0013] Preferably, the thickness of the heating wire of the heating tube is 1-2 times the thickness of the heat-conducting copper layer of the heating tube, and the thickness of the heat-conducting copper layer of the heating tube is 1-2 times the thickness of the heat-conducting graphene layer of the heating tube.

[0014] Preferably, the thickness of the heat-insulating and heat-preserving cylinder of the heating tube is 1-2 times the thickness of the stress-weakening heating tube, and the thickness of the stress-weakening heating tube is 1-2 times the thickness of the stress-weakening heat-transfer cylinder.

[0015] The utility model provides a tooling for weakening the welding stress of an ultra-long circular pipe column, which has the following advantages:

[0016] In the utility model, the stress at the welding joint of the ultra-long circular pipe column is weakened through two forms of electric heating and ultrasonic vibration, effectively reducing the distribution and retention of the welding stress. Through aging vibration and electric heating, the welding stress at the welding joint is slowly dispersed or weakened and dissipated, ensuring the weakening of the welding stress at the welding joint of the ultra-long circular pipe column, and greatly improving the welding firmness and stability of the ultra-long circular pipe column. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the tooling for weakening the welding stress of the ultra-long circular pipe column of the present utility model;

[0018] Figure 2 It is a schematic diagram of the side sectional structure of the cylindrical stress-weakening cavity of the tooling for weakening the welding stress of the ultra-long circular pipe column of the present utility model;

[0019] Figure 3 It is a schematic diagram of the semi-sectional structure of the cylindrical stress-weakening cavity of the tooling for weakening the welding stress of the ultra-long circular pipe column of the present utility model;

[0020] Figure 4 It is a schematic diagram of the sectional structure of the stress-weakening heating tube of the tooling for weakening the welding stress of the ultra-long circular pipe column of the present utility model;

[0021] In the figure: 1. Cylindrical stress-weakening cavity; 2. Stress-weakening cavity controller; 3. Stress-weakening cavity heat-insulating sleeve bag; 4. Controller charging plug; 5. Weakening cavity conducting wire; 6. Weakening cavity control wire; 7. Weakening cavity control switch; 8. Weakening cavity protective housing; 9. Ultrasonic vibration ball; 10. Vibration ball control wire; 11. Heating tube heat-insulating and heat-preserving cylinder; 12. Stress-weakening heat-transfer cylinder; 13. Stress-weakening heating tube; 14. Heating temperature sensing probe; 15. Heating tube conducting wire; 16. Heat-insulating sleeve bag tying belt; 17. Heating tube heating wire; 18. Heating tube heat-conducting copper layer; 19. Heating tube heat-conducting graphene layer. DETAILED DESCRIPTION OF THE INVENTION

[0022] The present utility model will be further described and explained below in conjunction with specific embodiments and the accompanying drawings of the specification.

[0023] In order to make the objectives, technical solutions and advantages of the present utility model more clear and understandable, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the scope of protection of the present utility model.

[0024] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "horizontal", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0025] As Figure 1 shown, a tooling for weakening the welding stress of an ultra-long circular pipe column includes a cylindrical stress weakening cavity 1. A stress weakening cavity controller 2 is connected to the rear end of the cylindrical stress weakening cavity 1. Stress weakening cavity heat preservation bags 3 are installed on both the front and rear sides of the cylindrical stress weakening cavity 1. A controller charging plug 4 is installed on one side of the stress weakening cavity controller 2, and the other side is directly connected to the cylindrical stress weakening cavity 1 through a weakening cavity conducting wire 5 and a weakening cavity control wire 6. A weakening cavity control switch 7 is installed on the cylindrical stress weakening cavity 1, and the weakening cavity control switch 7 is electrically connected to the stress weakening cavity controller 2 through the weakening cavity conducting wire 5 and the weakening cavity control wire 6.

[0026] As Figure 2 、 3 shown, a tooling for weakening the welding stress of an ultra-long circular pipe column, the cylindrical stress weakening cavity 1 includes a stress weakening heat transfer cylinder 12 arranged on the innermost layer and directly attached to the ultra-long circular pipe column. A stress weakening heating tube 13 is wrapped around the outer surface of the stress weakening heat transfer cylinder 12, and a heating tube heat insulation and heat preservation cylinder 11 is wrapped around the surface of the stress weakening heating tube 13. A number of ultrasonic vibration balls 9 are evenly arranged on the outer surface of the heating tube heat insulation and heat preservation cylinder 11. The ultrasonic vibration balls 9 are connected in series through a vibration ball control wire 10. A heating temperature sensing probe 14 passing through the heating tube heat insulation and heat preservation cylinder 11, the stress weakening heat transfer cylinder 12 and the stress weakening heating tube 13 is installed inside the cylindrical stress weakening cavity 1.

[0027] As Figure 2 、 3As shown in the figure, a tooling for weakening the welding stress of an ultra-long circular pipe column is provided. A heating tube lead wire 15 is connected to the tail of the stress weakening heating tube 13. The heating tube lead wire 15 and the vibration ball control line 10 are electrically connected to the stress weakening cavity controller 2 through the weakening cavity control switch 7. The thickness of the heating tube heat insulation cylinder 11 is 1-2 times that of the stress weakening heating tube 13, and the thickness of the stress weakening heating tube 13 is 1-2 times that of the stress weakening heat transfer cylinder 12. The cylindrical stress weakening cavity 1 further includes a weakening cavity protective sleeve 8. A number of ultrasonic vibration balls 9 are evenly arranged between the weakening cavity protective sleeve 8 and the heating tube heat insulation cylinder 11, and a solid soft plastic sound transmission glue is filled between the ultrasonic vibration balls 9.

[0028] As Figure 3 shown in the figure, a tooling for weakening the welding stress of an ultra-long circular pipe column is provided. A heat insulation sleeve strap 16 is sleeved on the stress weakening cavity heat insulation sleeve bag 3.

[0029] As Figure 4 shown in the figure, a tooling for weakening the welding stress of an ultra-long circular pipe column is provided. The stress weakening heating tube 13 includes a heating tube heating wire 17. The outer surface of the heating tube heating wire 17 is wrapped with a heating tube heat conducting copper layer 18, and the outer surface of the heating tube heat conducting copper layer 18 is wrapped with a heating tube heat conducting graphene layer 19. The thickness of the heating tube heating wire 17 is 1-2 times that of the heating tube heat conducting copper layer 18, and the thickness of the heating tube heat conducting copper layer 18 is 1-2 times that of the heating tube heat conducting graphene layer 19.

[0030] During operation, first insert the ultra-long circular pipe column into the cylindrical stress weakening cavity 1 and move it to the welding position on the ultra-long circular pipe column. Plug in the controller charging plug 4. At this time, the stress weakening cavity controller 2 is powered on and starts. Input the temperature to be heated, the power and frequency of ultrasonic vibration through the control buttons on the stress weakening cavity controller 2, and start the weakening cavity control switch 7 on the cylindrical stress weakening cavity 1. At this time, the stress weakening heating tube 13 and the ultrasonic vibration balls 9 will start and work simultaneously.

[0031] The stress weakening heating tube 13 electrically heats the welding position on the ultra-long circular pipe column. The heating temperature of the stress weakening heating tube 13 is monitored in real time through the heating temperature sensing probe 14 and fed back to the stress weakening cavity controller 2. The solder at the welding point will slowly release the welding stress at high temperature. When the stress weakening heating tube 13 starts to heat, use the heat insulation sleeve strap 16 to firmly tie the stress weakening cavity heat insulation sleeve bags 3 on both sides of the cylindrical stress weakening cavity 1 to the outer surface of the ultra-long circular pipe column for heat insulation to avoid heat loss during electric heating. The ultrasonic vibration balls 9 will also vibrate and work simultaneously to release the welding stress at the welding point through vibration. Finally, the welding stress is released by simultaneously performing aging work on the welding point through heating and vibration.

[0032] In the present utility model, stress weakening work is carried out on the welded joints of the ultra-long round pipe columns through two forms of electric heating and ultrasonic vibration, effectively reducing the distribution and retention of welding stress. Through aging vibration and electric heating, the welding stress at the welded joints is slowly dispersed or weakened and dissipated, ensuring the weakening of the welding stress at the welded joints of the ultra-long round pipe columns, and greatly improving the welding firmness and stability of the ultra-long round pipe columns.

[0033] The technical solutions disclosed in the embodiments of the present utility model have been introduced in detail above. Specific embodiments are used in this article to elaborate on the principles and implementation manners of the embodiments of the present utility model. The descriptions of the above embodiments are only applicable to helping understand the principles of the embodiments of the present utility model; at the same time, for those of ordinary skill in the art, based on the embodiments of the present utility model, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. A tooling for weakening the welding stress of an ultra-long circular pipe column, characterized in that, It includes a cylindrical stress weakening cavity (1). A stress weakening cavity controller (2) is connected to the rear end of the cylindrical stress weakening cavity (1). Stress weakening cavity heat preservation sleeve bags (3) are installed on both the front and rear sides of the cylindrical stress weakening cavity (1), and heat preservation sleeve bag rolling tapes (16) are sleeved on the stress weakening cavity heat preservation sleeve bags (3). The cylindrical stress weakening cavity (1) includes a stress weakening heat transfer cylinder (12) arranged on the innermost layer in direct contact with the ultra-long round tube column. A stress weakening heating tube (13) is wrapped on the outer surface of the stress weakening heat transfer cylinder (12), and a heating tube heat insulation cylinder (11) is wrapped on the surface of the stress weakening heating tube (13). A number of ultrasonic vibration balls (9) are evenly distributed on the outer surface of the heating tube heat insulation cylinder (11). The ultrasonic vibration balls (9) are connected in series through vibration ball control lines (10). A heating temperature sensing probe (14) passing through the heating tube heat insulation cylinder (11), the stress weakening heat transfer cylinder (12), and the stress weakening heating tube (13) is installed inside the cylindrical stress weakening cavity (1).

2. The tooling for weakening the welding stress of an ultra-long circular pipe column according to claim 1, characterized in that, A controller charging plug (4) is installed on one side of the stress weakening cavity controller (2), and the cylindrical stress weakening cavity (1) is directly connected to the other side through a weakening cavity conducting wire (5) and a weakening cavity control line (6).

3. The tooling for weakening the welding stress of an ultra-long circular pipe column according to claim 2, wherein A weakening cavity control switch (7) is installed on the cylindrical stress weakening cavity (1). The weakening cavity control switch (7) is electrically connected to the stress weakening cavity controller (2) through the weakening cavity conducting wire (5) and the weakening cavity control line (6).

4. The tooling for weakening the welding stress of the ultra-long circular pipe column according to claim 3, characterized in that The cylindrical stress weakening cavity (1) further includes a weakening cavity protective housing (8). A number of ultrasonic vibration balls (9) are evenly distributed between the weakening cavity protective housing (8) and the heating tube heat insulation cylinder (11), and a solid soft sound transmission glue is filled between the ultrasonic vibration balls (9).

5. The tooling for weakening the welding stress of an ultra-long circular pipe column according to claim 1 or 2, characterized in that, A heating tube conducting wire (15) is connected to the tail of the stress weakening heating tube (13). The heating tube conducting wire (15) and the vibration ball control line (10) are electrically connected to the stress weakening cavity controller (2) through the weakening cavity control switch (7).

6. The tooling for weakening the welding stress of the ultra-long circular pipe column according to claim 5, characterized in that, The stress weakening heating tube (13) includes a heating tube heating wire (17). A heating tube heat conducting copper layer (18) is wrapped on the outer surface of the heating tube heating wire (17), and a heating tube heat conducting graphene layer (19) is wrapped on the outer surface of the heating tube heat conducting copper layer (18).

7. The tooling for weakening the welding stress of the ultra-long circular pipe column according to claim 6, characterized in that The thickness of the heating tube heating wire (17) is 1 - 2 times the thickness of the heating tube heat conducting copper layer (18), and the thickness of the heating tube heat conducting copper layer (18) is 1 - 2 times the thickness of the heating tube heat conducting graphene layer (19).

8. The tooling for weakening the welding stress of an ultra-long circular pipe column according to claim 1, characterized in that, The thickness of the heating tube heat insulation cylinder (11) is 1 - 2 times the thickness of the stress weakening heating tube (13), and the thickness of the stress weakening heating tube (13) is 1 - 2 times the thickness of the stress weakening heat transfer cylinder (12).

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