Device and method for preparing static stretching sample of steel wire with section diameter being 2-10mm

A technology for tensile specimens and steel wires, applied in the preparation of test samples, measuring devices, sampling, etc., can solve the problem of inability to accurately obtain conventional mechanical performance indicators, inability to obtain accurate stress and strain values, and difficulty in obtaining effective data guidance Steel wire and other problems, to achieve the effect of good sample performance, simple structure and good cooling effect
CN105699151AInactive Publication Date: 2016-06-22GUIZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
GUIZHOU UNIV
Publication Date
2016-06-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a device and a method for preparing a static stretching sample of a steel wire with a section diameter being 2-10mm. The device comprises a drum and a drum cover, the middle of the inner bottom of the drum is provided with a blind taper hole, the drum cover is arranged at the upper end of the drum wall which forms a cavity, the middle of the drum cover is provided with a through hole and a sprue, the lower side of the drum cover is provided with an arc transition surface protruding downwards, and the outer wall of the cavity is provided with a water inlet and a water outlet. One end of the stretching sample is vertically put into the device, and cooling water is fed into the cavity to solidify poured molten metal Sn. The device and the method for preparing the static stretching sample of the steel wire with the section diameter being 2-10mm have universality; by cooling outside the drum, solidification time of metal Sn solution can be shortened, and influences of overhigh temperature of molten metal Sn solution on textures of metal materials are avoided; due to self-positioning of the metal materials by the blind taper hole of the drum, positioning accuracy is realized while thickness uniformity of surrounding solidified metal Sn is guaranteed; in addition, the device has the advantages of structural simplicity, light weight, convenience, small size, convenience in assembly and disassembly, low manufacturing cost, time saving, labor saving and the like.
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Description

technical field

[0001] The invention relates to a sample preparation method and device for a steel wire static tensile sample with a section diameter of 2-10mm, and belongs to the technical field of sample preparation of metal materials for material analysis and testing. Background technique

[0002] The uniaxial tensile test is an important test method for the mechanical properties of metals. Yield strength, tensile strength, elongation after fracture and reduction of area can be determined through this test. Carry out machining as a standard sample, and use the method of directly clamping the steel wire to easily cause the clamping part to break or be damaged, so that the conventional mechanical performance indicators cannot be accurately obtained, and the accurate stress and strain values ​​cannot be obtained. The test data is inaccurate and unreliable , the accuracy is poor, which makes it more difficult to solve the processing index, and it is difficult to obtain effe...

Claims

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