T-type joint single-side-welding double-side-forming groove machining technology method

Abstract

The invention discloses a T-type joint single-side-welding double-side-forming groove machining technology method. The T-type joint single-side-welding double-side-forming groove machining technology method comprises the following steps: machine machining allowance is reserved on a base plate in the thickness direction in advance; an upright plate installing and welding position line is determined on the base plate; a boss is machined on the base plate corresponding to the installing and welding position line in advance, the width of the truncated edge of the boss after the truncated edge is machined is L, and circular corners R1 are chamfered at two sides of the boss; a groove in the side face of an upright plate is machined to be a slope with an inclined angle a, the bottom of the groove is machined to be a circular arc face R2, and the width of the root portion of the groove is L; the machining height of the truncated edge of the upright plate is L; the upright plate and the base plate are assembled, so that a half-U-type groove is formed; single side welding is conducted on the half-U-type groove in an argon tungsten-arc welding mode. The T-type joint single-side-welding double-side-forming groove machining technology method can effectively overcome the shortages such as incomplete fusion which occurs in the root portion of a welding seam and extrusion and cracks of pointed corners and fusion forming quality at two sides of base metal on the root portion of the welding seam is good.

Description

technical field [0001] The invention relates to a groove processing method, in particular to a T-shaped joint single-sided welding double-sided forming groove processing method, which belongs to the technical field of groove welding. [0002] Background technique [0003] According to the shape of the groove, the groove is divided into I-shaped, T-shaped, V-shaped, Y-shaped, double-Y-shaped, U-shaped, double-U-shaped, single-sided V-shaped, double-unilateral Y-shaped and J-shaped, etc. . In the structure of welding products in our country, there are many T-shaped fillet joints. For example, in the shipbuilding industry, bridge manufacturing industry, and various structural products of boilers and pressure vessels, the weld types of T-shaped fillet joints mainly include the following two types : [0004] 1. No groove fillet welding, such as figure 1 As shown, there is no bevel on the A and B surfaces on both sides of the vertical plate 1, and the welding between the verti...

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Problems solved by technology

[0008] The purpose of the present invention is to provide a T-shaped joint single-sided welding and double-sided forming groove processing method to solve the problem of existing T-shaped joints, especially on one side. The T-shaped joint with a closed cavity has welding defects during welding, and the quality of the reverse side of the weld root is not good, and the technical problem that 100% UT flaw detection cannot be achieved can effectively solve the above-mentioned problems in the prior art

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