GB/T 25651-2010Hammer crusher - Hammerhead ablation (English PDF)
锤式破碎机 锤头磨耗
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
December 1, 2010
Implementation date
March 1, 2011
Scope
GB/T 25651-2010 is the English-translated version of 锤式破碎机 锤头磨耗.
GB/T 25651-2010 specifies the terms and definitions, the technical requirements, the test methods, the material saving evaluation value, the inspection rules and the nominal rating label for the hammerhead ablation and the hammerhead material utilization of hammer crushers.
Clause 1 applies it to the hammerhead ablation and hammerhead material utilization of PCD type hammer crushers, which it lists as PCD and 2PCD, and of PC type hammer crushers, which it lists as PC, PCK, PCX, PCKW, PCZ and PCL among others.
Clause 3 defines six terms on top of those established in GB/T 7679.5: the standard conditions, fixed as clay-free limestone with a bulk density of 1.6 t/m3, humidity not over 8%, silicon content below 2% and compressive strength of 120 MPa to 140 MPa; hammerhead ablation, the metal wear of the whole set of hammerheads per tonne of material handled, expressed in g/t, under those standard conditions and a given reduction ratio; the grade of hammerhead ablation, a three level classification of that wear in which grade 1 is the smallest wear and grade 3 the largest; the rated grade of hammerhead ablation, which the manufacturer declares for the crusher when it leaves the factory; the using rate of material in the hammerhead; and the grade of that using rate, likewise in three levels, with grade 1 the highest utilization and grade 3 the lowest.
The draft on the page stops at the end of clause 3, so the technical requirements, test methods, inspection rules and labelling clauses announced in clause 1 are not shown.
Clause 2 cites GB/T 321-2005 and GB/T 7679.5.
The foreword states that this is the first release of the standard, that it was proposed by the China Machinery Industry Federation and is handled by the National Mining Machinery Standardization Technical Committee (SAC/TC88), and that it was drafted by Shanghai Road and Bridge Construction Machinery Co., Ltd., Luoyang Mining Machinery Engineering Design Institute Co., Ltd., Zhejiang Mine Machinery Co., Ltd. and a Shandong mining machinery company whose name the draft garbles. It was issued on 2010-12-01 and has applied since 2011-03-01.
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Document preview — GB/T 25651-2010
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 references
- 3 Terms and Definitions GB/T
Foreword
The standard proposed by China Machinery Industry Federation.
1 Scope
This standard specifies the terms and definitions hammer crusher hammer and hammer wear material utilization, technical requirements, test methods, hammer festival Material saving evaluation value, inspection rules and nominal rating label.
This standard applies to PCD type (PCD, 2PCD) and PC-type (PC, PCK, PCX, PCKW, PCZ, PCL, etc.) hammer crusher Hammer and hammer wear material utilization.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 321-2005 priority number and priority number system (ISO 3. 1973, IDT)
GB/T 7679.5 mining machinery - Part 5: Crushing grinding equipment
3 Terms and Definitions
GB/T 7679.5 and established the following terms and definitions apply to this standard.
3.1 Standard conditions
Broken material bulk density of 1.6t/m3, humidity no more than 8% silicon content of less than 2%, the compressive strength of 120 MPa ~ 140MPa, clay-free limestone.
3.2 Hammer wear
Hammer crusher at a predetermined standard conditions and crushing than in the case, every material handling 1t whole equipment hammer wear amount of the metal in g/t FIG.
3.3 Hammer wear rating
Hammer wear grade is a hierarchical method hammer crusher hammer metal wear volume size. In accordance with the standard amount of wear of the hammer To determine the size, divided into three grades 1,2,3. Level 1 represents the minimum amount of wear, the wear amount represents the maximum level three.
3.4 Rated hammer wear rating
When the hammer crusher factory, hammer crusher hammer by the manufacturer in accordance with the provisions of this standard and wear levels.
3.5 Hammerhead material utilization
Hammer crusher under the specified standard conditions and a certain reduction ratio condition, the material can hammer the average ratio of the amount of wear.
3.6 Hammerhead material utilization level
Hammerhead Hammerhead material utilization level indicates the amount of material utilization hammer crusher level of a hierarchical method. In accordance with the standard hammer wood Determining the level of material utilization, divided into three grades 1,2,3. Level 1 is the highest efficiency, level 3 represents the lowest utilization.
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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.
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Related Standards
GB/T 321-2005 — Preferred numbers -- Series of preferred numbers
GB/T 7679.5-2025 — Mining machinery terminology — Part 5: Crushing and grinding equipment
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