Steel wire ropes for balance
1 Scope
This document specifies the classification, ordering information, materials, technical requirements, inspection and test methods, qualification criteria, acceptance, safety, use and maintenance, packaging, marking, and quality certificate of steel wire ropes for balance (hereinafter referred to as "steel wire ropes").
This document is applicable to round steel wire ropes and flat steel wire ropes for balance in coal, metal, non-metal and other mines.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 228.1 Metallic materials - Tensile testing - Part 1: Method of test at room temperature
GB/T 238 Metallic materials - Wire - Reverse bend test
GB/T 239.1 Metallic materials - Wire - Part 1: Simple torsion test
GB/T 2104 Steel wire ropes - Packing, marking and certificate - General requirements
GB/T 8358 Steel wire ropes - Determination of measured breaking force
GB/T 8706 Steel wire ropes - Vocabulary, designation and classification
GB/T 21965 Steel wire ropes - Vocabulary for acceptance and defect
GB/T 29086 Steel wire ropes - Safety - Use and maintenance
NB/SH/T 0387 Wire rope greases
NB/SH/T 6019 Lubricating grease and maintenance oil for wire rope of friction hoist
YB/T 081 Rule for rounding off of numberical values and judgment of testing values for technical standards of metallurgy
YB/T 4452 Fibre cores for steel wire ropes
YB/T 5343 Steel wire for ropes
YB/T 5357 Steel wire and wire products - Zinc or zinc-aluminum alloy coating
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 8706 apply.
4 Classification
4.1 The classification of steel wire ropes according to structure shall meet the requirements of GB/T 8706, as shown in Table 1. If the purchaser does not clearly specify the specific structure of the steel wire rope, the manufacturer may determine it on their own within the same group in Table 1.
4.2 The round steel wire ropes are classified into right interactive laying and left interactive laying according to the laying type and laying direction, as shown in Figures 1a) and 1b). The laying method of inner rope for multi-stand ropes in groups 4 to 9 in Table 1 shall be determined by the manufacturer.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
5 Order information
6 Material
7 Technical requirements
8 Inspection and test methods
9 Qualification criteria
10 Acceptance
11 Safety, use and maintenance
12 Packaging, marking and quality certificate
Annex A (Normative) Mechanical property of steel wire ropes
