Welding aid and method of welding thereof

Abstract

The present application belongs to the technical field of welding, and discloses a welding auxiliary part and a welding method thereof. The welding auxiliary part comprises a first abutting part, the first abutting part being capable of being mounted on a taper pipe. The welding auxiliary part further comprises a second abutting part, the second abutting part being capable of being welded with the first abutting part and a base respectively. The taper pipe is welded on the base. A first plane is formed on the second abutting part, the first plane being parallel to an axis of the taper pipe and being perpendicular to a horizontal plane. The problem of inaccurate positioning caused by the offset and thermal deformation of the taper pipe during welding in the prior art is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding, in particular to a welding auxiliary part and a welding method thereof. BACKGROUND

[0002] In the field of welding technology, it is often necessary to weld a conical pipe on an arc surface, but a large amount of heat will be generated during the welding process, and the large amount of heat will cause the arc surface below to deform, which will cause the conical pipe and the arc surface to be welded to be out of position. At the same time, the heat will also cause the flange at the upper end of the conical pipe to deform, and the axis of the conical pipe will deviate from the horizontal plane, causing other parts fixedly connected to the flange to deviate, resulting in inaccurate positioning of the parts. SUMMARY

[0003] The purpose of the present application is to provide a welding auxiliary part and a welding method, which solves the problem of inaccurate positioning caused by the deviation and thermal deformation of the conical pipe during welding in the prior art.

[0004] To achieve this purpose, the present application adopts the following technical solution: the present application provides a welding auxiliary part, which comprises a first abutting part, the first abutting part being capable of being installed on a conical pipe, the welding auxiliary part further comprising a second abutting part, the second abutting part being capable of being welded with the first abutting part and a base respectively, the conical pipe being welded on the base, a first plane being formed on the second abutting part, the first plane being parallel to the axis of the conical pipe, and the first plane being perpendicular to the horizontal plane.

[0005] Preferably, the base is arc-shaped, and the bottom of the conical pipe is connected to the arc-shaped surface.

[0006] Preferably, the first abutting part comprises a first abutting surface and a connecting surface, the first abutting surface being connected to the first plane, and the first abutting part being connected to the conical pipe through the connecting surface.

[0007] Preferably, a flange is installed at the top of the conical pipe.

[0008] Preferably, the first abutting part is integrally formed with the flange at the top of the conical pipe, or the first abutting part is installed on the side wall of the conical pipe.

[0009] Preferably, the second abutting part is plate-shaped, one side of the second abutting part close to the conical pipe being the first plane, a second plane being formed on the second abutting part along the thickness direction, and the second plane being connected to the base.

[0010] A welding method of a welding auxiliary part, comprising the welding auxiliary part of any one of the above, further comprising the following steps:

[0011] S1, place the cone pipe on the preset arc surface of the base, select four points on the circumference of the contact surface between the cone pipe and the base for spot welding;

[0012] S2, weld the first plane of the second abutting piece on the first abutting surface, weld the second plane on the arc surface, and make the second abutting piece perpendicular to the horizontal plane;

[0013] S3, fully weld between the cone pipe and the base.

[0014] Beneficial effect: first, the cone pipe and the base are spot welded, the relative position of the cone pipe and the base is pre-fixed, then the second abutting piece is welded with the cone pipe and the base respectively, the heat generated by the above welding is transmitted to the second abutting piece and the first abutting piece, at the same time, the position between the cone pipe and the base is locked after this step, finally, the cone pipe and the base are fully welded, since the position of the cone pipe and the base has been fixed by the second abutting piece, the heat deformation generated by welding will not cause the position of the cone pipe to deviate from the preset position, so as to improve the accuracy of welding the cone pipe. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the main body diagram of the cone pipe of the present application;

[0016] Figure 2 is the short cone pipe diagram of the present application;

[0017] Figure 3 is the long cone pipe diagram of the present application;

[0018] Figure 4 is the side view of the cone pipe welding of the present application.

[0019] In the figure: 1-first abutting piece; 11-first abutting surface; 2-second abutting piece; 21-first plane; 22-second plane; 3-base; 4-cone pipe. DETAILED DESCRIPTION

[0020] The present application will be further described in detail below in combination with the drawings and examples. It can be understood that the specific examples described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, in order to facilitate the description, only the parts related to the present application are shown in the drawings, not all the structures.

[0021] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0022] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0023] In the description of the present embodiment, the terms "up", "down", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0024] Under the prior art, the conical pipe is welded to the arc-shaped base, the installation position of the conical pipe needs to be determined first, and after the determination is completed, the joint between the conical pipe and the base is fully welded. However, a large amount of heat generated by full welding will cause thermal deformation of the base and the conical pipe, resulting in that the finished product after the final welding is offset from the preset position. Since the flange is also arranged on the upper end of the conical pipe, the subsequent part positioning is not accurate, and the flange on the upper end of the conical pipe cannot be connected.

[0025] In order to solve the above problems, as shown in Figures 1 to 4 The present application provides a welding auxiliary part, which comprises a first abutting part 1, the first abutting part 1 can be installed on a conical pipe 4, the welding auxiliary part further comprises a second abutting part 2, the second abutting part 2 can be welded with the first abutting part 1 and a base 3 respectively, the conical pipe 4 is welded on the base 3, a first plane 21 is formed on the second abutting part 2, the first plane 21 is parallel to the axis of the conical pipe 4, and the first plane 21 is perpendicular to the horizontal plane.

[0026] The second abutting piece 2 is connected with the first abutting piece 1 and the base 3 respectively, and the total welding heat generated during the connection is transmitted to the second abutting piece 2 and the first abutting piece 1 respectively. Since the second abutting piece 2 does not directly contact the taper pipe 4, a part of the heat generated by the total welding can be dissipated, the thermal deformation of the taper pipe 4 at the position of the first welding piece is reduced, the offset between the flange at the upper end of the taper pipe 4 and the preset position is reduced, and the parts connected with the flange can be smoothly butted.

[0027] The base 3 of the present application is arc-shaped, the bottom of the taper pipe 4 is connected with the arc-shaped surface, the bottom end surface of the taper pipe 4 is also inwardly recessed to form an arc surface opposite to the arc surface, and the connection position of the base 3 and the taper pipe 4 is selected to be point-welded at two groups of highest points and lowest points, so that the taper pipe 4 and the base 3 are pre-positioned, the connection of the second abutting piece 2 is facilitated, and since the heat generated by the point welding is smaller than the heat generated by the total welding, the deformation between the taper pipe 4 and the base 3 will not occur after the point welding, and the connection of the flange with other parts will not be affected.

[0028] As shown in Figure 2 and Figure 3 The first abutting piece 1 of the present application comprises a first abutting surface 11 and a connecting surface, the first abutting surface 11 is connected with the first plane 21, and the first abutting piece 1 is connected with the taper pipe 4 through the connecting surface.

[0029] The first abutting piece 1 can avoid the direct connection of the second abutting piece 2 with the taper pipe 4, and the total welding is only performed between the first abutting piece 1 and the second abutting piece 2. The heat generated by the total welding is attenuated after being transmitted to the taper pipe 4, and the thermal deformation of the taper pipe 4 is reduced.

[0030] The first abutting piece 1 of the present application is installed at the top of the taper pipe 4 or the first abutting piece 1 is installed at the side wall of the taper pipe 4. When the length of the taper pipe 4 is moderate, the flange on the taper pipe 4 can be integrally formed with the first abutting piece 1, and the connection of the second abutting piece 2 is facilitated. When the length of the taper pipe 4 is too long, the diameter of the upper end of the taper pipe 4 is small, and the first abutting piece 1 can be installed at the middle segment of the side wall of the taper pipe 4, so that the length of the first abutting piece 1 is not too long, and the positioning accuracy of the taper pipe 4 is not affected.

[0031] The second abutting piece 2 of the present application is plate-shaped, one side of the second abutting piece 2 close to the taper pipe 4 is the first plane 21, and the second plane 22 is formed in the thickness direction of the second abutting piece 2, and the second plane 22 is connected with the base 3, so that the material cost of the second abutting piece 2 is reduced.

[0032] It should be particularly noted that the second abutting piece 2 can be of any shape, as long as it can be connected with the first abutting piece 1 and the second abutting piece 2 respectively, and then it can be selected.

[0033] A welding method of a welding auxiliary part, comprising the following steps:

[0034] S1, placing the cone pipe 4 on the preset arc surface of the base 3, selecting four points on the circumference of the contact surface between the cone pipe 4 and the base 3 for spot welding;

[0035] The position of the cone pipe 4 and the base 3 is pre-fixed by spot welding, so that the cone pipe 4 is prevented from deviating when the second abutting piece 2 is connected subsequently.

[0036] S2, welding the first plane 21 of the second abutting piece 2 on the first abutting surface 11, welding the second plane 22 on the arc surface, and making the second abutting piece 2 perpendicular to the horizontal plane;

[0037] S3, fully welding between the cone pipe 4 and the base 3.

[0038] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present application. Here, it is unnecessary and impossible to enumerate all the implementation modes. Any modification, equivalent substitution and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A welding method of a welding auxiliary, the welding auxiliary comprising a first abutting piece (1), the first abutting piece (1) being mountable on a taper pipe (4), the welding auxiliary further comprising a second abutting piece (2), the second abutting piece (2) being weldable with the first abutting piece (1) and a base (3) respectively, the taper pipe (4) being welded on the base (3), the second abutting piece (2) being formed with a first plane (21), the first plane (21) being parallel to an axis of the taper pipe (4), the first plane (21) being perpendicular to a horizontal plane; the first abutting piece (1) comprising a first abutting surface (11) and a connecting surface, the first abutting surface (11) being connected with the first plane (21), the first abutting piece (1) being connected with the taper pipe (4) through the connecting surface, a flange being mounted on a top of the taper pipe (4), the first abutting piece (1) being integrally formed with the flange on the top of the taper pipe (4) or the first abutting piece (1) being mounted on a side wall of the taper pipe (4); the base (3) being arc-shaped, a bottom of the taper pipe (4) being connected with an arc surface; the second abutting piece (2) being plate-shaped, a side of the second abutting piece (2) close to the taper pipe (4) being the first plane (21), the second abutting piece (2) being formed with a second plane (22) along a thickness direction, the second plane (22) being connected with the base (3); the welding method of the welding auxiliary comprising the following steps: S1, placing the taper pipe (4) on a preset arc surface of the base (3), and selecting four points on a periphery of a contact surface between the taper pipe (4) and the base (3) for spot welding; S2, welding the first plane (21) of the second abutting piece (2) on the first abutting surface (11), welding the second plane (22) on the arc surface, and making the second abutting piece (2) perpendicular to the horizontal plane; S3, fully welding between the taper pipe (4) and the base (3).

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