CN-116713573-B - Welding auxiliary device and welding method

CN116713573BCN 116713573 BCN116713573 BCN 116713573BCN-116713573-B

Abstract

The invention belongs to the technical field of welding, and discloses a welding auxiliary device and a welding method. The welding auxiliary device comprises a straightening assembly and a supporting plate, wherein the straightening assembly comprises a pressing clamping block, the pressing clamping block is arranged on a welding test plate and abuts against the welding test plate along the length direction of the welding test plate, the supporting plate is arranged on the side face of a welding platform and used for supporting the welding test plate, and an avoidance groove is formed in the supporting plate and used for accommodating an FGB gasket. The welding auxiliary device is used for enhancing the rigidity of the welding test plate, preventing the welding test plate from bending deformation in the welding process, improving the welding quality, avoiding the need of leveling the welding test plate and the automatic welding trolley, having simple construction process and high welding efficiency, effectively preventing welding flux from adhering to a welding platform below after the FGB pad is welded in the welding process, and saving the subsequent processing time and flow.

Inventors

WANG MENGGUO
SHAO DANDAN
LI YUNJUN
LI KUI
WEI NAN
DU WEI

Assignees

广州文冲船厂有限责任公司

Dates

Publication Date: 20260505
Application Date: 20230725

Claims (4)

1. The welding method is characterized in that a welding auxiliary device is used, and the welding auxiliary device comprises: the straightening assembly (1), the straightening assembly (1) comprises a pressing clamping block (11), and the pressing clamping block (11) is arranged on the welding test plate (100) and is abutted against the welding test plate (100) along the length direction of the welding test plate (100); The support plate (2), the support plate (2) is arranged on the side face of the welding platform (200), the support plate (2) is used for supporting the welding test plate (100), the support plate (2) is provided with an avoidance groove (21), and the avoidance groove (21) is used for accommodating the FGB gasket (500); The straightening assembly (1) further comprises a stud (12) and a nut (13), wherein the stud (12) is arranged on the welding test plate (100), and the compression fixture block (11) is arranged on the stud (12) in a penetrating manner and is abutted against the welding test plate (100); The two support plates (2) are arranged at intervals on the side surfaces of the welding platform (200), the upper surfaces of the two support plates (2) are positioned at the same horizontal height, and the length of the pressing clamping block (11) is smaller than the distance between the two support plates (2); The method comprises the following steps: S1, mounting the compression clamping block (11) on the back surface of the welding test plate (100), and enabling the compression clamping block (11) to be abutted against the welding test plate (100); s2, arranging the supporting plate (2) on the side surface of the welding platform (200); s3, placing the back surface of the welding test plate (100) on the supporting plate (2), and adjusting the position of the welding test plate (100) to enable the FGB gasket (500) on the back surface of the welding test plate (100) to be positioned in the avoidance groove (21) so as to enable the back surface of the welding test plate (100) to be in smooth and full contact with the supporting plate (2); S4, placing a rail (400) for guiding the automatic welding trolley (300) to move on the welding platform (200), and adjusting the direction of the rail (400) to enable the length direction of the rail (400) to be parallel to the extending direction of a welding groove of the welding test plate (100); S5, placing the automatic welding trolley (300) on the rail (400), starting the automatic welding trolley (300), and welding the welding groove; The straightening assembly (1) further comprises a stud (12) and a nut (13), and the step S1 of installing the compression fixture block (11) on the back surface of the welding test plate (100) comprises the following steps: uniformly welding studs (12) on the back surface of the welding test plate (100) along the length direction; the compression clamping block (11) is arranged on the stud (12) in a penetrating way and is abutted against the welding test plate (100); Screwing a nut (13) on the stud (12) to enable the nut (13) to lean against the compression clamping block (11) so as to enable the compression clamping block (11) to be tightly attached to the welding test plate (100); in step S2, disposing the support plate (2) on the side of the welding platform (200) includes: two support plates (2) are arranged on the side face of the welding platform (200) according to the same horizontal height, and the distance between the two support plates (2) is larger than the length of the pressing clamping block (11); After the welding groove is welded, the method further comprises the following steps: -removing the straightening assembly (1).
2. The assembly welding method according to claim 1, wherein a plurality of studs (12) are uniformly arranged along the length direction of the welding test plate (100).
3. The assembly welding method according to claim 1, wherein the straightening assembly (1) further comprises a spacer (14), the spacer (14) being arranged between the nut (13) and the compression block (11).
4. The mounting method according to claim 1, characterized in that the distance between the upper surface of the support plate (2) and the upper surface of the mounting platform (200) is equal to the thickness of the welding test plate (100).

Description

Welding auxiliary device and welding method Technical Field The invention relates to the technical field of welding, in particular to a welding auxiliary device and a welding method. Background The FGB single-sided submerged-arc automatic welding is a high-efficiency submerged-arc automatic welding process which is characterized in that a ceramic liner containing glass fiber cloth is stuck on the back surface of a groove, and a narrow-gap V-shaped groove is filled with iron powder with a certain height, so that single-sided welding double-sided forming is realized, and the FGB single-sided submerged-arc automatic welding has higher requirements on parameters such as blanking precision, assembly precision and the like of the welding groove, otherwise, welding defects such as incomplete welding, burning-through, cracks and the like are easy to occur. Because the welding requirement of the FGB single-sided submerged arc automatic welding is high, a large number of welding process development tests, welding process assessment, welder training, welder examination, production tests and the like aiming at the FGB single-sided submerged arc automatic welding are required to be carried out, and the assembly and the welding of the FGB single-sided submerged arc automatic welding test plate are required to be carried out. The existing FGB single-sided submerged-arc automatic welding method comprises the steps of pre-assembling two welding test plates and FGB gaskets to be welded together, then cushioning the welding test plates and rail backing plates on a welding platform by adopting wedge-shaped iron tips, leveling the upper surfaces of the welding test plates and the rail backing plates by adjusting the wedge-shaped iron tips, then temporarily welding wedge-shaped iron pieces with the welding test plates and the rail backing plates, so that the upper surfaces of all parts are smooth, the rail and submerged-arc automatic welding trolley are convenient to set, and finally welding grooves on the welding test plates by using the automatic welding trolley. Disclosure of Invention The invention aims to provide a welding auxiliary device and a welding method, which can improve welding stability without leveling. To achieve the purpose, the invention adopts the following technical scheme: welding auxiliary device, comprising: the straightening assembly comprises a pressing fixture block which is arranged on the welding test plate and is abutted against the welding test plate along the length direction of the welding test plate; The backup pad, the backup pad sets up the side at the welding platform, the backup pad is used for bearing welding test board, set up in the backup pad and dodge the groove, dodge the groove and be used for holding FGB liner. Preferably, the straightening assembly further comprises a stud and a nut, the stud is arranged on the welding test plate, and the pressing fixture block penetrates through the stud and is abutted to the welding test plate. Preferably, a plurality of studs are uniformly arranged along the length direction of the welding test plate. Preferably, the straightening assembly further comprises a spacer disposed between the nut and the compression block. Preferably, the distance between the upper surface of the support plate and the upper surface of the welding platform is equal to the thickness of the welding test plate. Preferably, two support plates are arranged at intervals on the side surfaces of the welding platform, the upper surfaces of the two support plates are located at the same horizontal height, and the length of the pressing clamping block is smaller than the distance between the two support plates. The welding method, which uses the welding auxiliary device, comprises the following steps: s1, mounting the compression fixture block on the back surface of the welding test plate, and enabling the compression fixture block to be abutted against the welding test plate; s2, arranging the supporting plate on the side surface of the welding platform; S3, placing the back surface of the welding test plate on the supporting plate, and adjusting the position of the welding test plate to enable the FGB gasket on the back surface of the welding test plate to be positioned in the avoidance groove so as to enable the back surface of the welding test plate to be in smooth and full contact with the supporting plate; s4, placing a rail guiding the automatic welding trolley to move on the welding platform and the welding test plate, and adjusting the direction of the rail to enable the length direction of the rail to be parallel to the extending direction of a welding groove of the welding test plate; s5, placing the automatic welding trolley on the rail, starting the automatic welding trolley, and welding the welding groove. Preferably, the straightening assembly further includes a stud and a nut, and the mounting the pressing fixture block on the back of the welding test plate in step