Check patentability & draft patents in minutes with Patsnap Eureka AI!

Method for preparing tensile sample of steel cord

A technique for tensile specimens and steel cords, applied in the field of tensile specimen preparation of steel cords, can solve the problems of high price, large amount of specimens, troublesome replacement of fixtures, etc., and achieves simple and flexible operation and accurate test results. , the effect of low production cost

Inactive Publication Date: 2009-10-21
中华人民共和国辽宁出入境检验检疫局
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are: ①The price is expensive, and the price of a set of fixtures is about 10,000 US dollars
② The amount of sample is large, and a steel cord sample needs to be 1.5 meters long
③ Fixtures are troublesome to replace and usually need to be installed on a special tensile testing machine, which is not suitable for users who frequently change fixtures

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing tensile sample of steel cord
  • Method for preparing tensile sample of steel cord

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] according to Figure 1-2 Shown, a kind of steel cord tensile sample preparation method, its steps are as follows:

[0018] ①Cut a 460mm sample from the whole roll of steel cord, wrap both ends with 0.5mm copper wire, the winding length is 5-10mm, the winding force does not need to be large, and it is enough to ensure that the steel cord does not loose strands;

[0019] ② Untwist the two ends of the steel cord sample into a broom head shape. When untwisting, gently force the steel wires to separate at an angle of 30° to 45°. Be careful not to bend the steel wires repeatedly to avoid breaking the steel wires;

[0020] ③Hot dipping: Dip the broom head vertically into the zinc chloride solution for 1 to 2 seconds, take it out and transfer it to a molten tin bath for tin plating for 1 to 2 seconds; the tin used for hot dipping is ordinary commercially available solder, melted The temperature can be hot-plated to the surface of the steel wire with tin;

[0021] ④ Casting: P...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a method for preparing a tensile sample of a steel cord. The method comprises the following steps: (1) fixing; (2) backtwisting; (3)hot galvanizing; and (4) casting. The method has the advantages of simple and flexible operation, low production cost and accurate test result; and the sample of the steel cord can be prepared according to an actually needed length, a special tensile test clamp for the steel cord is not needed for the sample, so that the test can be carried out on the common tensile tester.

Description

technical field [0001] The invention relates to the technical field of steel cord preparation, in particular to a method for preparing steel cord tensile samples. Background technique [0002] Steel cord has the advantages of high strength, good flexibility, fatigue resistance, good bonding, etc., and is widely used as the skeleton material of radial tires and strip rubber products. The mechanical performance indicators of steel cord mainly include: breaking force, elongation, breaking strength, breaking strain, elastic modulus, etc., and these properties must be measured by tensile tests. Since the steel cord is twisted with many very thin steel wires, the diameter is small and the strength is high, the first problem to be solved in the tensile test is how to clamp the steel cord sample on the testing machine, and how to During the process, do not slide, do not loose strands, and the multi-strand steel wires are evenly stressed. The steel cords must be broken at the same t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01N1/28
Inventor 董秀文李岩曹志军李永平
Owner 中华人民共和国辽宁出入境检验检疫局
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com