GB/T 33930-2017High-pressure rolling mill for mine—Restore specifications of extrusion roll (English PDF)
矿用高压辊磨机 挤压辊修复规范
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
July 12, 2017
Implementation date
February 1, 2018
Scope
GB/T 33930-2017 is the English-translated version of 矿用高压辊磨机 挤压辊修复规范.
GB/T 33930-2017 is the specification for repairing the press rolls of high pressure roller mills for mines, and covers the terms and definitions, the repair of surfacing (weld overlay) press rolls, the repair of studded press rolls, the inspection of repair quality, and packaging, transport and storage.
It applies to the repair of both the surfacing press roll and the studded press roll of mine high pressure roller mills.
It defines the welded roll, the studded roll, on-line repair, where the worn overlay layer and studs are repaired or replaced without removing the roll from the machine body, and off-line repair, where the roll is taken out of the equipment to be brought back to its original size and performance.
For the surfacing press roll it allows repair by automatic welding machine surfacing or by manual welding, including submerged arc welding and arc welding. It cites GB/T 13384, GB/T 17493, GB/T 17854 and JB/T 3223. It was issued on 12 July 2017 and has applied since 1 February 2018.
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Document preview — GB/T 33930-2017
National Standard of the People's Republic of China
- ICS
- 73.120
- Classification
- D 94
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative reference documents
- 3 Terms and definitions
- 4 Surfacing squeeze roller repair
Foreword
This standard is drafted in accordance with the rules given in GB/T 1.1-2009.
1 Scope
This standard specifies the terms and definitions for the repair of squeeze rollers for mining high pressure roller mills, the repair of surfacing squeeze rollers, the repair of column nail press rollers, Repair quality inspection, packaging, transportation and storage.
This standard applies to mine high pressure roller mill surfacing squeeze roller and column nail squeeze roller repair.
2 Normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this document. For undated references, the latest edition (including all modifications) applies to this document.
General specification for packaging of electromechanical products GB/T 13384
GB/T 17493 low alloy steel flux cored wire
Stainless steel welding wire and flux for submerged arc welding GB/T 17854
JB/T 3223 quality management rules for welding materials
General technical requirements for heavy machinery - Part 15: Nondestructive testing of forged steel
3 Terms and definitions
The following terms and definitions apply to this document.
3.1 Surfacing press roll
Direct contact with the material of the squeeze roller surface only using surfacing wear-resistant material of the squeeze roller structure.
3.2 Stud nail extrusion stud
And the material directly in contact with the extrusion roller roll surface with a wear-resistant alloy studs to squeeze the roller structure, column nails and other forms of adhesive and roll On the column nail hole to achieve the installation.
3.3 Online repair
In the case where the pressing roller does not remove the apparatus main body, the roll surface surfacing layer, the column nail and the like are worn, and the damaged portion is repaired, replaced, Parts to restore the original size and performance of the repair method.
3.4 Offline repair
Will be squeezed out of the equipment to repair the body, so that the roll surface surfacing layer, column nails and other wear parts to restore the original size and performance of the repair method.
4 Surfacing squeeze roller repair
4.1 Repair program
Surfacing crimping roller can be used automatic welding machine surfacing or manual welding method for roller repair, including submerged arc welding or arc welding
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Normative references
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Related Standards
GB/T 13384-2008 — General specifications for packing of mechanical and electrical product
GB/T 17493-2018 — Tubular cored electrodes for creep-resisting steels
GB/T 17854-2018 — Solid wire electrodes /flux combinations for submerged arc welding of stainless steels
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