GB/T 35841-2018High strength steel plate for dump truck structure (English PDF)

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 Technical requirements

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.

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. […]