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LY/T 1461-2008: Specification for defibrator abrasive disc
Status: Valid LY/T 1461: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| LY/T 1461-2008 | English | 149 |
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Specification for defibrator abrasive disc
| Valid |
LY/T 1461-2008
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| LY/T 1461-1999 | English | 199 |
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(Hot mill grinding technical conditions)
| Obsolete |
LY/T 1461-1999
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PDF similar to LY/T 1461-2008
Basic data | Standard ID | LY/T 1461-2008 (LY/T1461-2008) | | Description (Translated English) | Specification for defibrator abrasive disc | | Sector / Industry | Forestry Industry Standard (Recommended) | | Classification of Chinese Standard | B97 | | Classification of International Standard | 79.120.99 | | Word Count Estimation | 5,551 | | Date of Issue | 2008-09-03 | | Date of Implementation | 2008-12-01 | | Older Standard (superseded by this standard) | LY/T 1461-1999 | | Quoted Standard | GB/T 191; GB/T 230.1; GB/T 1184-1996; GB/T 9239.1-2006; GB/T 13384 | | Regulation (derived from) | Industry standard filing Notice No. 10 of 2008 | | Issuing agency(ies) | State Forestry Administration | | Summary | This standard specifies requirements for hot mill grinding, inspection rules and signs, transportation, packaging, storage and so on. This standard applies to wood and non-wood fiber separation plant with a hot mill grinding. | LY/T 1461-2008: Specification for defibrator abrasive disc---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Specification for defibrator abrasive disc
ICS 79.120.99
B97
People's Republic of China Forestry Industry Standard
Replacing LY/T 1461-1999
Thermal mill grinding technology conditions
Released on.2008-09-03
2008-12-01 implementation
State Forestry Administration released
Foreword
This standard replaces LY/T 1461-1999 "Technical Conditions for Refining Grinding Machines".
The main differences between this standard and LY/T 1461-1999 are as follows.
---The hardness of the grinding teeth is greatly improved;
--- Improve the geometric accuracy and shape position accuracy of the grinding disc;
--- Balanced quality level has been improved, increasing the dynamic balance requirements of rotating grinding pieces.
This standard is proposed and managed by the National Technical Committee for Wood-based Panel Machinery Standardization.
This standard was drafted. Wood Industry Research Institute of China Academy of Forestry, Shanghai Huanghai Grinding Film Co., Ltd., Jilin Chengxin Industrial Co., Ltd.
Limited liability company.
The main drafters of this standard. Ouyang Lin, Zhu Weimin, Peng Zhicheng.
The previous versions of the standards replaced by this standard are.
---ZBB97032-1988, LY/T 1461-1999.
Thermal mill grinding technology conditions
1 Scope
This standard specifies the requirements, inspection rules and signs, transportation, packaging, storage, etc. of the grinding machine.
This standard applies to the grinding of hot and wood mills for the separation of wood and non-wood plant fibers.
2 Normative references
The terms in the following documents become the terms of this standard by reference to this standard. All dated references, followed by all
Modifications (not including errata content) or revisions do not apply to this standard, however, parties to agreements based on this standard are encouraged to study
Is it possible to use the latest version of these files? For undated references, the latest edition applies to this standard.
GB/T 191 packaging storage and transportation pictorial signs (GB/T 191-2008, ISO 780.1997, MOD)
GB/T 230.1 Metallic Rockwell hardness test - Part 1. Test methods (A, B, C, D, E, F, G, H, K, N, T scales)
[GB/T 230.1-2004, ISO 6508-1.1999 Metalicmaterials-Rockwel hardnesstest-Part 1.Test
Method(scalesA, B, C, D, E, F, G, H, K, N, T), MOD]
GB/T 1184-1996 Shape and position tolerances without tolerance values (eqv ISO 2768-2.1989)
GB/T 9239.1-2006 Mechanical vibration constant (rigid) rotor balance quality requirements Part 1. Specification and balance tolerance
Inspection (ISO 1940-1.2003, IDT)
General technical conditions for GB/T 13384 mechanical and electrical product packaging
3 requirements
3.1 Grinding material should be 9Cr18Mo, ferrochrome or a material with high corrosion resistance, high hardness and certain toughness.
3.2 According to GB/T 230.1, the hardness of the grinding disc is tested, the hardness is HRC52~62, and the hardness of the same group of grinding discs should be small.
At HRC2.
3.3 There must be no casting defects in the grinding parts of the grinding disc.
3.4 The surface roughness of each part of the grinding disc is as follows.
a) grinding the top of the tooth Ra1.6;
b) grinding plate mounting base Ra1.6;
c) two sides of the grinding plate Ra3.2;
d) Grinding tooth groove Ra25.
3.5 The flatness of the surface of the grinding plate installation shall comply with the requirements of Class 5 of the tolerance class in Table B1 of GB/T 1184-1996.
3.6 The flatness of the tooth top of the grinding grinding center shall comply with the requirements of the tolerance class 5 in Table B1 of GB/T 1184-1996.
3.7 The parallelism of the top surface of the grinding disc to the mounting surface of the grinding disc should meet the tolerance level of Table B3 of GB/T 1184-1996
Level 5 regulations.
3.8 The thickness of the same set of grinding discs is 0.02mm.
3.9 After the assembly of the grinding disc, the clearance between the adjacent two grinding discs shall not exceed 0.3 mm.
3.10 The same group of rotating grinding discs should be balanced after calibration and balance, and the balance quality grade should conform to G1 in GB/T 9239.1-2006.
Level requirements.
3.11 The same set of moving grinding discs after school balance shall be numbered sequentially with red paint on the back, and the static grinding discs shall be numbered sequentially with yellow paint.
4 Inspection rules
4.1 Factory inspection
4.1.1 Each set of products should be factory tested before leaving the factory.
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