GB/T 43491-2023
Steel wire ropes—Creep testing method (English Version)

Standard No.

GB/T 43491-2023

Language

Chinese, Available in English version

Release Date

2023

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 43491-2023

Introduction

Introduction

GB/T 43491-2023 "Wire Rope Creep Test Method" is an important standard that aims to regulate the creep performance determination of wire ropes under constant load. The standard was drafted by Guizhou Wire Rope Co., Ltd. and other units, and is mainly applicable to the creep property research and quality control of wire ropes in the industrial field.

Comparison of standard frameworks

Standard dimensions	GB/T 43491—2023	International advanced level	Comparison with old standards
Scope of application	Determination of creep properties of wire rope under constant load	In line with international standards, suitable for testing a variety of materials	Limited to specific types of wire ropes
Test equipment	Requires force fluctuation range ≤0.5%, calibration accuracy level 1 or higher	Uses high-precision sensors and automated control systems	Equipment accuracy is low, no detailed calibration specifications
Specimen preparation	Specimens should be straight, undamaged, and securely tied at both ends	Pay attention to surface treatment and dimensional accuracy	No clear requirements for bundling method and specimen status
Test procedure	Includes preloading, temperature control and data recording	Use dynamic loading and environmental simulation technology	Only static test conditions are specified
Data processing	Introduce temperature compensation formula to ensure accurate results	Apply complex data analysis software	Only simple calculation of elongation

Implementation advice

Equipment selection and calibration

It is recommended to use a high-precision testing machine, such as a tensile testing machine that meets Class 1 accuracy. Perform regular calibration in accordance with GB/T16825.1 and ensure that the gauge length of the measuring device meets the standard requirements.

Staff training

Operators must undergo professional training and be familiar with the basic principles and operating procedures of creep tests. It is recommended to organize technical exchanges and practical exercises regularly to improve test efficiency and accuracy.

Environmental control

The test should be carried out in an environment with a temperature fluctuation range of ≤±2℃ to ensure that the measuring device is protected from mechanical vibration and electromagnetic interference. For large wire rope specimens, it is recommended to take shock-absorbing measures to reduce external interference.

Data recording and analysis

Use professional data analysis software to process the test data, especially when temperature compensation is required. It is recommended to record data every 1 hour for at least 200 hours, and draw creep curves in time to observe changes in wire rope performance.