GB/T 33159-2016 in English
VALIDSteel cord test method
- Issued on:2016-10-13
- Implemented on:2017-09-01
- File Format:PDF
- Delivery:Within 1 day
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| Standard No: | GB/T 33159-2016 |
| Document status: | VALID |
| Title in English: | Steel cord test method |
| Title in Chinese: | 钢帘线试验方法 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Within 1 day |
| Issued on: | 2016-10-13 |
| Implemented on: | 2017-09-01 |
| ICS Classification: | 77.140.65-Steel wire, wire ropes and link chains |
| Chinese Classification: | H49-Steel wire and wire rope |
| Professional Classification: | GB-National Standard |
| Related Keywords: | steel cord test method introduction gb/t
machine test steel cord steel cord test methods standard dimensions technical requirements test methods scope steel cord steel cord products |
| Related Topics: | car cord
GB/T 33159 GBT33159 GB/T 33159-2016 OTR steel cord Forging line test method Partition marking method experimental method |
《GB/T 33159-2016钢帘线试验方法》由TC183（全国钢标准化技术委员会）归口，TC183SC3（全国钢标准化技术委员会盘条及钢丝分会）执行，主管部门为中国钢铁工业协会。
Introduction
GB/T 33159-2016 Overview of Steel Cord Test Methods
| Standard Dimensions | Technical Requirements | Test Methods | Scope of Application |
|---|---|---|---|
| Appearance Quality | No Back Wire, Core Protrusion and Other Defects | Visual Inspection Method | All Steel Cord Products |
| Dimensional Properties | Tolerance Range ±0.015mm | Micrometer Measurement Method | Diameter Measurement and Twist Length Test |
| Mechanical Properties | Breaking force ≥ 80kN, elastic modulus ≥ 12GPa | Tensile testing machine test | Steel cord for radial tires |
Explanation of professional terms and practical application cases
Twist pitch: Refers to the twist pitch of each strand of steel cord, usually quantified by the untwisting method or the trace method. For example, when testing the twist pitch, if an untwisting instrument is used, it is necessary to ensure that the clamp tension is controlled below 5N to avoid affecting the test accuracy.
Bow height: Indicates the straightness of the steel cord. The smaller the bow height value, the straighter the steel cord. For example, in actual production, a bow height ≤3mm is considered a qualified standard.
Implementation Suggestions
- Establish a standardized testing laboratory equipped with instruments and equipment that meet the accuracy requirements, such as normal micrometers and tensile testing machines.
- Train professional technicians to ensure that operators are familiar with standard methods and precautions.
- In actual production, regularly calibrate test equipment to ensure that measurement errors are within the allowable range.
- Develop differentiated test plans for different types of steel cord products, such as test parameter adjustments for high elongation and ordinary types.
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