CN204321394U - A kind of thin plate splicing weld industry device - Google Patents

Abstract

The utility model discloses a thin plate splicing welding deformation control device, which belongs to the field of welding deformation control. The device includes a strip pressing device, an argon filling table, and a wedge iron. The strip-shaped pressing device includes a fixing seat at the end and a pressing plate in the middle. The two ends of the pressing plate are fixedly connected with the fixing seat; there is at least one bolt in each fixing seat, and the fixing seat is connected with the argon filling platform through bolts. The pressing plate has The upper oblique plane, the lower oblique plane and the pressure application surface parallel to the upper surface of the argon filling table, the projection of the pressure plate on the argon filling table is a rectangle, and the argon filling table is equipped with an argon filling tank with the opening facing upwards, inside the argon filling tank The two ends of the tube are respectively equipped with an argon tube interface and an air outlet. The strip pressing device is distributed on both sides of the argon filling tank, parallel to the argon filling tank. By adopting the device, the welding deformation can be greatly reduced, the calibration workload can be reduced, and the production efficiency can be improved.

Description

A thin plate splicing welding deformation control device

technical field

The utility model relates to a thin plate splicing and welding deformation control device, which is suitable for the splicing welding deformation control of manual tungsten argon arc welding swing welding of various thin plates, especially for the splicing effect of some steel thin plates with large thermal expansion coefficients, which belongs to welding Deformation control technology field.

Background technique

As far as the applicant knows, in the civil engineering of the nuclear island of the VVER1000 nuclear power plant designed in Russia, a large number of stainless steel lining plates need to be spliced. The lining is made of 022Cr19Ni10 austenitic stainless steel with a plate thickness of 4mm. The welding method is usually manual tungsten argon arc welding (swing welding). Since welding is an uneven heating process, and the stainless steel plate is thin, the austenitic stainless steel material has a large thermal expansion coefficient and a small thermal conductivity after heating, and it is extremely easy to produce welding deformation such as misalignment and bulging after welding. At present, compression of both sides of the weld is usually used to reduce welding deformation. When the welding method adopts manual tungsten argon arc swing welding, in order not to affect the swing space of the welding torch when the welder is welding, the pressing tool is too far away from the weld bevel, so that the stiffness of the weld area is insufficient, and the welding deformation cannot be well controlled , It is difficult to correct after deformation, and cannot meet the construction progress and quality requirements of nuclear power plants.

Utility model content

The purpose of this utility model is: in view of the above problems, to provide a thin plate splicing welding deformation control device, which can greatly reduce the distance between the pressing tooling and the two sides of the weld bevel, and increase the pressing force on both sides of the weld bevel , so as to reduce welding deformation, reduce correction workload and improve production efficiency.

In order to achieve the above object, the technical scheme of the utility model is as follows:

A thin plate splicing and welding deformation control device, including a strip-shaped pressing device, an argon-filled table, and a wedge iron, characterized in that: the strip-shaped pressing device includes a fixing seat at the end and a pressing plate at the middle, and the pressing plate The two ends are fixedly connected to the fixed seat; each fixed seat is provided with at least one bolt, and the fixed seat is connected to the argon filling platform through bolts, and the pressure plate has an upper oblique plane, a lower oblique plane and a The pressure surface of the upper surface, the projection of the pressure plate on the argon filling table is rectangular, the argon filling table is provided with an argon filling tank with the opening facing upward, and the two ends inside the argon filling tank are respectively provided with an argon gas pipe interface and an air outlet. The strip-shaped pressing device is distributed on both sides of the argon filling tank, parallel to the argon filling tank.

The fixing seat at the end of the bar-shaped pressing device is fixed on the argon filling table to prevent the pressing plate from shaking, so as to effectively fix the position of the thin plate when pressing the thin plate and improve the welding accuracy. The pressing surface of the pressing plate compresses the thin plate to be welded, and the wedge iron squeezes under the downward inclined plane of the pressing plate to further compress the thin plate. The argon gas tank is equipped with an argon tube interface and an air outlet. During welding, argon enters from the argon tube interface and is discharged from the air outlet to protect the metal from oxidation.

Preferably, at least two ribs are fixed on the lower surface of the argon filling platform. The ribs can improve the strength of the argon charging platform and play a supporting role.

Preferably, the included angle between the upper oblique plane of the pressure plate and the upper surface of the argon charging platform is 20°-30°. This angle range can ensure that the upper oblique plane of the pressure plate does not affect the swing space of the welding torch during manual argon tungsten arc swing welding. The included angle between the lower oblique plane of the pressure plate and the upper surface of the argon filling platform is 14°-17°.

Preferably, the width of the pressing surface is greater than 8mm. The larger the width of the pressing surface, the larger the pressing area of the thin plate to be welded, which can more effectively reduce the welding deformation.

Preferably, the length of the argon-filled groove is greater than the length of the weld seam of the thin plate to be welded, the width is greater than the width of the weld seam, and its depth is 10 mm to 20 mm.

Preferably, the angle of the wedge head is equal to the angle between the lower oblique plane of the pressure plate and the upper surface of the argon filling table; the length of the wedge iron is less than or equal to the length of the pressure plate.

Preferably, a handle is provided on the outer edge of the fixing seat. After the welding is completed, the bolt can be unscrewed, and the bar-shaped pressing device can be lifted by the handle to replace the next weldment.

Description of drawings

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail, wherein:

Fig. 1 is a structural schematic diagram of a thin plate splicing welding deformation control device of the present invention;

Fig. 2 is a schematic diagram of the cross-sectional structure of the pressing plate in Embodiment 1 of the utility model;

Fig. 3 is a schematic cross-sectional structure diagram of the fixing seat of Embodiment 1 of the utility model;

Fig. 4 is a schematic diagram of placement of stainless steel thin plates to be welded according to Embodiment 1 of the present invention.

Detailed ways

In order to better understand the utility model, a specific embodiment of the utility model will be described in detail below in conjunction with the accompanying drawings.

Embodiment one

As shown in Figure 1, the utility model includes a strip pressing device, an argon filling table 3, and a wedge iron 10. Wherein, the strip-shaped pressing device includes a fixing seat 1 and a pressing plate 2 located at the end. On the upper surface of the argon filling table 3 is provided an argon filling groove 7 with an opening facing upward. Two strip-shaped pressing devices are placed in parallel on the argon filling table 3, and are respectively parallel to the argon filling tank 7, and the two are equidistantly distributed on both sides of the argon filling tank 7. One end of the argon filling tank 7 is provided with an argon gas pipe interface 8, and the other end is provided with an air hole. During welding, argon gas enters from the argon gas pipe interface 8 and is discharged from the gas outlet to protect the metal from oxidation. The lower surface of the argon filling platform 3 is fixed with three ribs 9 parallel to each other and having the same length as the argon filling platform 3 . The ribs 9 can improve the strength of the argon filling platform 3 and play a supporting role. As shown in FIGS. 1 and 3 , the bar-shaped pressing device is connected to the argon filling platform 3 through the bolts 13 on the fixing base 1 . Two bolts 13 are arranged inside each fixing seat 1 , and a bolt hole is arranged on the position corresponding to each bolt 13 on the argon charging table 3 , and nuts 12 are fixed outside the bolt holes. When in use, the strip pressing device and the argon filling platform 3 are tightly connected by tightening the bolts 13 . As shown in FIG. 2 , the projection of the pressing plate 2 on the argon filling platform 3 is a rectangle, which has an upper oblique plane 4 , a lower oblique plane 5 and a pressing surface 6 parallel to the upper surface of the argon filling platform 3 . Both ends of the pressing plate 2 are fixedly connected with the fixing seat 1 .

As shown in Figure 2, the included angle between the upper oblique plane 4 of the pressure plate 2 and the upper surface of the argon charging platform 3 is 24°, which can ensure that the upper oblique plane of the pressure plate does not affect the welding torch during manual argon tungsten arc swing welding In the swinging space, the included angle between the lower oblique plane 5 and the upper surface of the argon charging table 3 is 16°, and at the same time, the angle of the wedge head of the wedge iron 10 is 16°, which are the same, so that the wedge iron 10 can be better inserted into the pressure plate 2 and the weldment, so as to compress the thin plate to be welded. The length of wedge iron 10 is less than the length of pressing plate 2. The width of the pressing surface 6 is 10mm, and it is symmetrically distributed on both sides of the argon-filled tank 7. The wider pressing surface 6 is beneficial to compress a larger area and prevent deformation of the weldment.

Figure 4 is a schematic diagram of the placement of stainless steel sheets to be welded. As shown in the figure, two stainless steel sheets 14 are tightly pressed by the pressure plate 2 on the argon-filling table 3, and the two parts to be welded are butted, and the weld seam is located directly above the argon-filling tank 7 , the depth of the argon-filled tank 7 is 10mm, its length is greater than the length of the weld, and its width is greater than the width of the weld, which is conducive to fully surrounding the weld with argon and preventing the metal from being oxidized. A handle 11 is provided on the outer edge of the fixing base 1 . After the welding is completed, the bolt 13 can be unscrewed, and the strip pressing device is lifted by the handle 11, so as to replace the next weldment.

In addition to the above embodiments, the utility model can also have other implementations. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the utility model.

Claims (7)

1. A thin plate splicing and welding deformation control device, including a strip pressing device, an argon filling table, and a wedge iron, characterized in that: The strip-shaped pressing device includes a fixing seat (1) at the end and a pressing plate (2) at the middle, and the two ends of the pressing plate (2) are fixedly connected with the fixing seat (1); each fixing seat (1) There is at least one bolt inside, and the fixed seat (1) is connected with the argon filling platform (3) through bolts; the pressure plate (2) has an upper oblique plane (4), a lower oblique plane (5) and a The pressure surface (6) on the upper surface of the argon charging platform (3), the projection of the pressing plate (2) on the argon charging platform (3) is a rectangle; The argon filling station (3) is provided with an argon filling tank (7) with an opening facing upwards, and the two ends inside the argon filling tank (7) are respectively provided with an argon gas pipe interface (8) and an air outlet; The strip-shaped pressing device is distributed on both sides of the argon filling tank (7), parallel to the argon filling tank (7). 2. A thin plate splicing welding deformation control device according to claim 1, characterized in that: at least two ribs (9) are fixed on the lower surface of the argon filling table. 3. A thin plate splicing and welding deformation control device according to claim 1, characterized in that: the angle between the upper oblique plane (4) of the pressing plate (2) and the upper surface of the argon filling table (3) is 20°~30°; the included angle between the lower oblique plane (5) of the pressure plate (2) and the upper surface of the argon filling table (3) is 14°~17°. 4. A thin plate splicing and welding deformation control device according to claim 1, characterized in that: the width of the pressing surface (6) is greater than 8mm. 5. A thin plate splicing welding deformation control device according to claim 1, characterized in that: the length of the argon-filled tank (7) is greater than the length of the weld seam of the thin plate to be welded, and the width is greater than the width of the weld seam, which The depth is 10mm~20mm. 6. A thin plate splicing and welding deformation control device according to claim 1, characterized in that: the angle of the wedge head of the wedge iron (10) is equal to the angle between the downward oblique plane (5) of the pressing plate (2) and the The included angle of the upper surface of the argon charging platform (3); the length of the wedge iron (10) is less than or equal to the length of the pressing plate (2). 7. A thin plate splicing and welding deformation control device according to claim 1, characterized in that: the outer edge of the fixing seat (1) is provided with a handle (11).