T-type high energy beam welding joint shear strength test piece and manufacturing method thereof

Abstract

The invention provides a T-type high energy beam welding joint shear strength test piece and a manufacturing method of the T-type high energy beam welding joint shear strength test piece. The T-type high energy beam welding joint shear strength test piece is applied to a shear-bearing capacity test of a T-type high energy beam overlap joint welding line with a greater difference between material wall thicknesses at two sides; the shear strength test piece comprises two or three test piece upper plates and one test piece lower plate; the materials and the thicknesses of the test piece upper plates are the same and the test piece upper plates are on the same plane; the test piece upper plates are respectively welded on the test piece lower plate by two welding lines through high energy beam welding; the two welding lines are parallel; the manufacturing method comprises the following steps of: determining the materials of the test piece according to parent materials at two sides of the welding lines in the product; assembling the test pieces to be welded at the upper and lower sides in place; welding two parallel welding lines with the same parameters on the test pieces; cutting sheet materials at upper sides of the middle parts of the two welding lines; and machining a certain quantity of dynamic test pieces on the test piece according to a GB / T2651-2008 Welding Joint Tensile Test Method.

Description

technical field [0001] The invention relates to a welded joint test piece and a manufacturing method thereof, in particular to a T-shaped high-energy beam welded joint shear strength test piece and a manufacturing method thereof. Background technique [0002] In high-energy beam welding such as laser welding and electron beam welding, T-joint lap welds are a relatively common form of joints, such as figure 1 shown. In actual use, this type of joint is mostly subjected to shear force, so the shear resistance of the joint is the main indicator of joint performance. The current national standards "Sampling Method for Mechanical Performance Test of Welded Joints" (GB2649-89) and "Tensile Test Method for Welded Joints" (GB / T2651-2008) clearly stipulate the production and testing methods of tensile test pieces for welded joints. Among them, the shear strength test method of lap welds is usually as follows: figure 2 shown. These methods measure the shear resistance of lap join...

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Problems solved by technology

[0003] The invention provides a shear strength test piece of a T-shaped high-energy beam welded joint and a manufacturing method thereof, which solves the problem of testing the shear resistance of a T-shaped high-energy beam lap joint weld with a large difference in wall thickness on both sides

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