Detection method for softness of steel wires

A detection method and technology for steel wire, which is applied in the direction of applying stable tension/pressure to test the strength of the material, which can solve the problems such as the softness and broken wire of the steel wire that cannot be well reflected, so as to reduce the production defect rate and detect The effect of low cost and simple equipment

Inactive Publication Date: 2015-04-29
JIANGSU XINGDA STEEL TYPE CORD
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AI Technical Summary

Problems solved by technology

[0002] Usually, the inspection items of steel wire include: appearance, size, strength, torsion, etc. When the steel wire has high hardness and rigidity due to certain factors, it is very easy to cause wire breakage in the subsequent twisting process, and the above inspection items It cannot reflect the softness of the steel wire rod well.

Method used

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  • Detection method for softness of steel wires

Examples

Experimental program
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Effect test

Embodiment 1

[0018] see figure 1 , a method for detecting the softness of steel wire rods, comprising the steps of:

[0019] 1. select the sample steel wire rod 5 to be tested with a diameter of 0.30 mm, form a circle of 10 cm according to the size of the standard sample ring 2, and fix the seam head on the seam head ring 1 of the test plate (4) with a dial;

[0020] ② Hang a gravity source 3 with a mass M=10g at the lowest point of the steel wire 5 to be tested, so that the steel wire 5 to be tested is stretched naturally, and record the elongation of the steel wire 5 to be tested △h=18mm;

[0021] ③According to the formula R=△h / M, calculate the value of softness, where R is the softness, and substituting the data into the formula to calculate the softness R is 1.8mm / g.

Embodiment 2

[0023] A method for detecting the softness of steel wire rods, comprising the steps of:

[0024] ① select the sample steel wire rod 5 to be tested with a diameter of 0.35 mm, circle it into a circle of 10 cm according to the size of the standard sample ring 2, and fix the seam head on the seam head ring 1 of the test plate 4 with a dial;

[0025] ② Hang a gravity source 3 with a mass M=10g at the lowest point of the steel wire 5 to be tested, so that the steel wire 5 to be tested is stretched naturally, and record the elongation of the steel wire 5 to be tested △h=9mm;

[0026] ③According to the formula R=△h / M, calculate the value of softness, where R is the softness, and substituting the data into the formula to calculate the softness R is 0.9mm / g.

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Abstract

The invention discloses a detection method for the softness of steel wires. The detection method comprises the following steps that (1) a steel wire sample to be detected is circled into a certain circle diameter according a standard sample circle, and a sewing head is fixed on a detection plate with a dial; (2) a gravity source with certain weight is suspended at the lowest point of the steel wire sample to be detected, so that the steel wire sample to be detected is naturally drawn, the elongation delta h of the steel wire sample is recorded, and M is the mass of the suspended gravity source; and (3) the value of the softness is calculated according to a formula R=delta h/M, wherein R is the softness. The detection method disclosed by the invention has the advantages that the operation is simple and fast, the used equipment is simple, the detection cost is low, the softness of the steel wire can be rapidly and effectively reflected on a production site in a direct manner, so that whether the processability of the steel wire for a steel cord meets the requirement or not can be rapidly and comprehensively detected out; and the detection device is simple and is convenient in use, so that the production can be better guided and the defective rate in production can be reduced.

Description

technical field [0001] The invention relates to a method for detecting the softness of steel wire rods, in particular to a method for detecting the softness of steel wire rods for steel cord production. technical background [0002] Usually, the inspection items of steel wire include: appearance, size, strength, torsion, etc. When the steel wire has high hardness and rigidity due to certain factors, it is very easy to cause wire breakage in the subsequent twisting process, and the above inspection items It cannot reflect the softness of the steel wire rod well. Therefore, it is an urgent need in the industry to develop a method that can effectively detect the softness of steel wire rods. Contents of the invention [0003] The purpose of the present invention is to overcome the above disadvantages and provide a method for detecting the softness of steel wire rods with simple operation. [0004] The present invention is achieved through the following technical solutions: ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/14
Inventor 倪自飞王威石荣珠姚利丽底华芳
Owner JIANGSU XINGDA STEEL TYPE CORD
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