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Pouring experiment method for overall breaking force of steel wire rope

A technology of whole rope breaking and pouring test, which is applied in the direction of applying stable tension/pressure to test the strength of materials, can solve the problems of unsuitable use in testing and high cost of materials, and is conducive to the determination of design and process parameters, raw materials low cost effect

Inactive Publication Date: 2010-06-23
ANGANG STEEL WIRE ROPE
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The use of non-alloy casting method is not suitable for testing due to the high cost of the selected materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The whole rope breaking tensile test method of steel wire rope, this method adopts the method of epoxy resin pouring to carry out the tensile test, the composition of raw materials used is prepared according to the following composition and weight ratio: 10 parts of epoxy resin, 0.4 parts of ethylenediamine, dibutyl ester 5 parts, 6 parts of quartz sand, 3 parts of talcum powder.

[0020] Described test method comprises the steps:

[0021] 1) Epoxy resin, ethylenediamine, and dibutyl fat are stirred evenly according to the weight ratio and used when pouring;

[0022] 2) Heat the prepared casting mold to 60-70°C, pour the evenly stirred mixture of epoxy resin, ethylenediamine and dibutyl fat into the mold, add quartz sand and talcum powder according to the weight ratio, and then pour ;

[0023] 3) Keep the poured steel wire rope head for 12-16 hours to be cured, and then carry out the tensile test.

Embodiment 2

[0025] The test method of breaking tensile force pouring of the whole steel wire rope, the method adopts the method of pouring epoxy resin to carry out the tensile test, and the composition of the raw materials used is prepared according to the following ingredients and weight ratios: 8 parts of epoxy resin, 0.2 parts of ethylenediamine, dibutyl ester 3 parts, 4 parts of quartz sand, 1 part of talcum powder. Test method is the same as embodiment 1.

Embodiment 3

[0027] The test method of breaking tensile force pouring of the whole steel wire rope, the method adopts the method of pouring epoxy resin to carry out the tensile test, and the raw materials used are prepared according to the following ingredients and weight ratios: 15 parts of epoxy resin, 0.6 parts of ethylenediamine, dibutyl ester 8 parts, 8 parts of quartz sand, 5 parts of talcum powder. Test method is the same as embodiment 1.

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Abstract

The invention relates to a pouring experiment method for overall breaking force of a steel wire rope. In the method, an epoxy resin pouring method is adopted for a tensile test; and raw materials adopted by the method comprise the following components according to parts by weight: 8-15 parts of epoxy resin, 0.2-0.6 part of ethidene diamine, 3-8 parts of DBP, 4-8 parts of quartz sand and 1-5 parts of talcum powder. Compared with the prior art, the method has the beneficial effect that a contrast experiment is carried out by steel wire ropes with five types of structures such as 6V*34+NF, 6V*37S+NF and the like as well as more than 30 specifications by two methods; resin pouring can improve the breaking force of the whole steel wire rope by 10% compared with alloy pouring; the test data of the method is closer to the real breaking force of the steel wire rope, which is more favourable for design of the steel wire rope and determination of technological parameters; and raw material cost is lower.

Description

technical field [0001] The invention relates to a test method for casting a steel wire rope under breaking tension. Background technique [0002] In the prior art, there are mainly four methods for measuring the breaking force of the whole rope: [0003] 1. Pouring method: pour the loose head of the sample with molten metal, cool it to room temperature, and clamp it in the jaw seat of the testing machine to perform the tensile test. Generally, the diameter of the steel wire rope is more than 20mm. At present, the whole rope test of the steel wire rope is generally used this method. [0004] 2. Sleeve pressure method: the method of compressing the sample head with a sleeve and clamping it in the jaws of the testing machine for tensile testing. This method is generally used for crimping of steel wire ropes with a diameter of more than 15 mm. It is mainly to test the firmness of the combination of the sleeve and the steel wire rope. Special crimping equipment is required, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08
Inventor 向卫国何德怀邢永晟赵东升王成华巴红
Owner ANGANG STEEL WIRE ROPE
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