GB/T 35841-2018 English PDF (GBT35841-2018)

This standard specifies the contents of ordering, grade presentation method, size, shape, weight, technical requirements, test methods, inspection rules, packaging, markings, and quality certificates for high strength steel plates for dump truck structures. This standard applies to the manufacture of high strength steel plates for large mine dump trucks with a thickness of 3 mm ~ 80 mm.

GB/T 35841-2018
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.10
H 46
High strength steel plate for dump truck structure
ISSUED ON. FEBRUARY 06, 2018
IMPLEMENTED ON. NOVEMBER 01, 2018
Issued by. General Administration of Quality Supervision, Inspection and Quarantine;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Order contents ... 6
4 Grade representation methods ... 6
5 Size, shape, weight ... 7
6 Technical requirements ... 7
7 Test methods ... 10
8 Inspection rules ... 11
9 Packaging, marking and quality certificates ... 11
Appendix A (Informative) Carbon equivalent reference value ... 12
High strength steel plate for dump truck structure
1 Scope
This standard specifies the contents of ordering, grade presentation method, size, shape, weight, technical requirements, test methods, inspection rules, packaging, markings, and quality certificates for high strength steel plates for dump truck structures.
This standard applies to the manufacture of high strength steel plates
(hereinafter referred to as steel plates) for large mine dump trucks with a thickness of 3 mm ~ 80 mm.
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) are applicable to this standard.
GB/T 222 Permissible tolerances for chemical composition of steel products GB/T 223.5 Steel and iron - Determination of acid-soluble silicon and total silicon content - Reduced molybdosilicate spectrophotometric method
GB/T 223.9 Iron steel and alloy - Determination of aluminum content - Chrom azurol S photometric method
GB/T 223.11 Iron, steel and alloy - Determination of chromium content - Visual titration or potentiometric titration method
GB/T 223.14 Methods for chemical analysis of iron, steel and alloy - The N- Benzoy-N-Phenylhydroxylamine extraction photometric method for the
determination of vanadium content
GB/T 223.18 Methods for chemical analysis of iron, steel and alloy - The sodium thiosulfate separation iodimetric method for the determination of copper content
GB/T 223.23 Iron, steel and alloy - Determination of nickel content - The dimethylglyoxime spectrophotometric method
GB/T 223.26 Iron, steel and alloy - Determination of molybdenum content - The thiocyanate spectrophotometric method
GB/T 223.40 Iron, steel and alloy - Determination of niobium content by the Sulphochlorophenol S spectrophotometric method
GB/T 223.62 Methods for chemical analysis of iron, steel and alloy - The butyl acetate extraction photometric method for the determination of
phosphorus content
GB/T 223.63 Methods for chemical analysis of iron, steel and alloy - The sodium (potassium) sodium periodate photometric method for the
determination of manganese content
GB/T 223.69 Iron, steel and alloy-Determination of carbon contents - Gas- volumetric method after combustion in the pipe furnace
GB/T 223.72 Iron, steel and alloy - Determination of sulfur content -
Gravimetric method
GB/T 228.1 Metallic materials - Tensile testing - Part 1 . Method of test at room temperature
GB/T 229 Metallic materials - Charpy pendulum impact test method
GB/T 247 General rule of package mark and certification for steel plates (sheets) and strips
GB/T 709 Dimension, shape, weight and tolerances for hot rolled sheets and strips
GB/T 2970 Method for ultrasonic testing of thicker steel plates
GB/T 2975 Steel and steel products - Location and preparation of test pieces for mechanical testing
GB/T 4336 Carbon and low-alloy steel - Determination of multi-element
contents - Spark discharge atomic emission spectrometric method (routine method)
GB/T 8170 Rules of rounding off for numerical values & expression and
judgement of limiting values
GB/T 14977 General requirement for surface condition of hot-rolled steel plates
GB/T 17505 Steel and steel products General technical delivery
requirements
GB/T 20066 Steel and iron - Sampling and preparation of samples for the 6.5.2 The surface of the steel plate is allowed to have a thin layer of iron oxide skin, rust, surface roughness, scratches, indentations and other local
imperfections caused by the peeling of the pressed iron oxide skin which do not affect the surface defect inspection, but its depth shall not exceed the half of the thickness tolerance, and it shall guarantee the minimum thickness of the steel plate.
6.5.3 Steel plates are not permitted to be repair welded.
6.5.4 In addition to the provisions for welding repairs, through negotiation between the supplier and the purchaser, and as noted in the contract, the surface quality may also follow the provisions of GB/T 14977.
6.6 Ultrasonic testing
In accordance with the requirements of the purchaser, ultrasonic testing shall be carried out for each steel sheet with a thickness of not less than 16 mm, the test method shall be in accordance with the provisions of GB/T 2970 and be qualified in grade III. After mutual consultation, other testing criteria can also be used. The specific testing criteria and qualification levels shall be specified in the contract.
6.7 Special requirements
After negotiations between supplier and the purchaser, it may put forward to other special requirements for the steel plate.
7 Test methods
7.1 The test method for the chemical composition of the steel shall be in accordance with GB/T 223.5, GB/T 223.9, GB/T 223.11, GB/T 223.14, GB/T
223.18, GB/T 223.23, GB/T 223.26 , GB/T 223.40, GB/T 223.62, GB/T 223.63, GB/T 223.69, GB/T 223.72, GB/T4336, GB/T20123, GB/T 20125, or otherwise in accordance with the general method, but in case of arbitration, it shall be in accordance with the provisions of GB/T 223.5, GB/T 223.9, GB/T 223.11, GB/T 223.14, GB/T 223.18, GB/T 223.23, GB/T 223.26, GB/T 223. 40, GB/T 223.62, GB/T 223.63, GB/T 223.69, GB/T 223.72.
7.2 The test items and test methods for steel plates are to comply with the requirements of Table 4.
Table 4 -- Test items, sampling quantity, sampling direction, sampling
method and test method of steel plate
No. Test item Sampling quantity
Sampling
direction
Sampling
method Test methods
1 Chemical composition 1/furnace - GB/T 20066 See 7.1