YB/T 4635-2017_English: PDF (YB/T4635-2017)
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| YB/T 4635-2017 | English | 110 |
Add to Cart
|
0--9 seconds. Auto-delivery
|
Precision Steel Strip for Retractor Spring of Vehicle Safety-Belts
| Valid |
YB/T 4635-2017
|
| Standard ID | YB/T 4635-2017 (YB/T4635-2017) | | Description (Translated English) | (Automotive safety belt coil spring with precision steel) | | Sector / Industry | Ferrous Metallurgy Industry Standard (Recommended) | | Word Count Estimation | 6,645 | | Date of Issue | 2017-11-07 | | Date of Implementation | 2018-04-01 | | Regulation (derived from) | Ministry of Industry and Information Technology Bulletin 2017 No. 48 | | Summary | This standard specifies the classification and marking, ordering content, dimensions, shape, weight, technical requirements, test methods, inspection rules, packaging, marking and quality certificates of precision steel belts for automobile seat belt coil springs. |
YB/T 4635-2017
YB
FERROUS METALLURGY INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.50
H 46
Precision Steel Strip for Retractor Spring of Vehicle Safety-Belts
ISSUED ON: NOVEMBER 07, 2017
IMPLEMENTED ON: APRIL 01, 2018
Issued by: Ministry of Industry and Information Technology of the People’s
Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Classification and Labelling ... 4
4 Order Contents ... 5
5 Size, Shape and Weight ... 6
6 Technical Requirements ... 7
7 Test Methods ... 8
8 Inspection Rules ... 8
9 Packaging, Marking and Quality Certificate ... 9
Precision Steel Strip for Retractor Spring of Vehicle Safety-Belts
1 Scope
This Standard specifies the classification and labeling, order content, size, shape, weight,
technical requirements, test methods, inspection rules, packaging, marking and quality
certificate of precision steel strip for retractor spring of vehicle safety-belts.
This Standard is applicable to the manufacture of precision steel strip for retractor spring of
vehicle safety-belts (hereinafter referred to as steel strip); and other similar uses can also refer
to this Standard.
2 Normative References
The following documents are essential to the application of this document. For the dated
documents, only the versions with the dates indicated are applicable to this document; for the
undated documents, only the latest version (including all the amendments) is applicable to this
document.
GB/T 224 Determination of the Depth of Decarburization of Steels
GB/T 228.1 Metallic Materials - Tensile Testing - Part 1: Method of Test at Room
Temperature
GB/T 247 General Rule of Package, Mark and Certification for Steel Plates and Strips
GB/T 2975 Steel and Steel Products - Location and Preparation of Test Pieces for
Mechanical Testing
GB/T 4340.1 Metallic Materials - Vickers Hardness Test - Part 1: Test Method
GB/T 17505 Steel and Steel Products - General Technical Delivery Requirements
YB/T 081 Rule for Rounding off of Numerical Values and Judgement of Testing Values
for Technical Standards of Metallurgy
3 Classification and Labelling
3.1 Classification
7 Test Methods
7.1 The chemical composition of the steel strip is usually accepted by checking the original
quality certificate of the steel mill.
7.2 The inspection items and test methods of the steel strip shall comply with the provisions of
Table 6.
7.3 The thickness of the steel strip shall be measured by a micrometer with an accuracy of 0.001
mm; and the thickness shall be measured at the center of the width of the steel strip.
7.4 The width of the steel strip shall be measured by a caliper with an accuracy of 0.01 mm.
7.5 During the tensile test of the steel strip, the width of the specimen shall be equal to the width
of the steel strip; and shall be taken along the rolling direction of the steel strip.
8 Inspection Rules
8.1 The quality of the steel strip shall be checked and accepted by the quality inspection
department of the supplier.
8.2 The steel strip shall be accepted in batches. Each batch shall be composed of individually
packaged steel strips with the same designation and specification.
8.3 The sampling quantity, sampling location and sampling method of the steel strip shall
comply with the provisions of Table 6.
8.4 The reinspection and judging rules of the steel strip shall comply with the provisions of
GB/T 17505.
8.5 The rounding-off rules of numerical values shall comply with the provisions of YB/T 081.
......
|