Sample tool for tensile test of end welding seam of thin plate

Abstract

The invention discloses a sample tool for a thin plate end joint weld tensile test, and belongs to the field of lamella heat exchangers; the sample tool comprises a first thin plate test piece and a second thin plate test piece, the lower side of one end of the first thin plate test piece is provided with the second thin plate test piece, and the end of the first thin plate test piece and the end of the second thin plate test piece are welded to form an end joint weld; the other end of the thin plate test piece II is welded with a compensation test block II to form a butt welding seam, the upper side and the lower side of the other end of the thin plate test piece I are respectively and fixedly provided with a compensation test block I, the upper side of the other end of the compensation test block II is fixedly provided with a compensation test block I, and each compensation test block I and each compensation test block II are respectively and fixedly arranged with a universal tensile testing machine. The sample tool is simple in structure and suitable for the end joint weld tensile test of all thin plates, and the stress directions of the thin plates on the same side of the end joint weld can be changed from the same direction to the back direction, so that the purpose of detecting the tensile strength of the end joint is achieved, and the problem that at present, the thin plate end joint weld cannot be directly subjected to the tensile stress test is solved.

Description

technical field [0001] The invention relates to the technical field of plate-shell heat exchangers, in particular to a sample tooling for tensile tests of thin plate end welds. Background technique [0002] The plate and shell heat exchanger is a heat exchanger with plate tubes as heat transfer elements. It is mainly composed of two parts: a plate bundle composed of plate tubes and a shell. The plate and shell heat exchanger uses the plate surface as the heat transfer surface, which has the advantages of high heat transfer efficiency, compact structure, small size, high temperature resistance, high pressure resistance, smooth plate surface, and is not easy to scale. The maximum working temperature of the plate-shell heat exchanger can reach 800°C, the maximum working pressure can reach 6.3MPa, and its heat transfer coefficient is about twice that of the shell-and-tube heat exchanger. [0003] The plate tube is the core component of the plate and shell heat exchanger for he...

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Problems solved by technology

[0004] Since the thickness of the thin plate on both sides of the end weld is relatively thin, usually only 0.6-1.2mm, and the thin plate is on the same side of the weld, it is not possible to directly perform a tensile stress test on the end weld of the thin plate. Currently, for the thin plate There is no good solution for the tensile stress test of the end weld

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