GB/T 6971-2007 English PDF

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GB/T 6971-2007: Test method for feed mills
Status: Valid

GB/T 6971: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 6971-2007	289	Add to Cart	3 days	Test method for feed mills	Valid
GB/T 6971-1986	959	Add to Cart	6 days	Test method for feed mills	Obsolete

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Basic data

Standard ID: GB/T 6971-2007 (GB/T6971-2007)
Description (Translated English): Test method for feed mills
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: B93
Classification of International Standard: 65.060.99
Word Count Estimation: 11,197
Date of Issue: 2007-11-01
Date of Implementation: 2008-01-01
Older Standard (superseded by this standard): GB/T 6971-1986
Regulation (derived from): China National Standard Approval Announcement2007 No.12 (Total No.112)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the feed mill test conditions and requirements, prepare test, pilot projects and methods. This standard applies to the feed mill.

GB/T 6971-2007: Test method for feed mills

---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.
Test method for feed mills ICS 65.060.99 B93 National Standards of People's Republic of China Replacing GB/T 6971-1986 Standard Test Method for feed mill Posted 2007-11-01 2008-01-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard is GB/T 6971-1986 "Test Method for feed mill" amendments. Compared with GB/T 6971-1986 Main Changes are as follows. --- Only retained the original standard 2.4 or reliability; --- Increased 5.3 hammer and flat tooth life testing and safety checks 5.4; --- Cancel the original standard recording forms; --- Original standard in Appendix B to "corn quality standards"; --- Increased the determination of the unit or the equipment in the mill stand-alone. Since the implementation of this standard replaces GB/T 6971-1986; Appendix A of this standard is an informative annex, Annex B normative appendix. The standard proposed by China Machinery Industry Federation. This standard by the National Standardization Technical Committee of agricultural machinery. This standard was drafted. Chinese Academy of Agricultural Mechanization Sciences, Jiangsu Shepherd Group, Guangzhou Xi Jinda Machinery Co., Ltd., Kunming Gone Ye Machinery Manufacturing Co., Ltd. Drafters of this standard. Chen Ge, Wang, Wang Ye complex, Yefang Bing, Qi Huichang. This standard replaces the previous standard published case. --- GB/T 6971-1986; --- NJ147-1977. Standard Test Method for feed mill

1 Scope

This standard specifies the test conditions and requirements for feed mill, to prepare, test items and test methods. This standard applies to the feed mill.

2 Normative reference standard

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 3768 Determination of sound pressure of sound power levels of noise sources using an enveloping surface reflectance measuring surface Simple Method GB/T 9239.1-2006 mechanical vibration steady state (rigid) rotor balance quality requirements - Part 1. specification of tolerance and balance Test (ISO 1940-1.2003, IDT) GB/T 10362 maize determination of moisture content GB 10395.1 Tractors and machinery for agriculture and forestry - Safety requirements - Part 1. General (GB 10395.1-2001, eqv ISO 4254-1. 1989) GB 10396 agricultural and forestry tractors and machinery, lawn and garden equipment - Safety signs and hazard pictorials - General principles (GB 10396- 2006, ISO 11684.1995, MOD) JB/T 9822.2 hammer mill feed hammer JB/T 9832.2-1999 agricultural and forestry tractors and machinery paint film adhesion method of pressing and cutting performance measurement method

3 Test conditions and requirements

3.1 Environmental conditions 3.1.1 The test area shall be large and easy to expand the experimental work. 3.1.2 The test site shall not exceed the natural wind speed 3m/s. 3.1.3 The test voltage shall comply with the following requirements. --- Three-phase motor is 380V ± 5%; --- Single-phase motor is 220V ± 5%; --- When the operator's manual should be applicable as otherwise provided in accordance with its provisions voltage voltage test. 3.1.4 The test shall be calibrated conditions in machines, test average load level of the motor is 85% to 110%. 3.2 Requirements for test equipment 3.2.1 The test equipment should be effective verification period. 3.2.2 Test before the start of the response was identified with state of the art equipment in good condition. 3.2.3 Test in Appendix A. with the main equipment 3.3 Requirements test material 3.3.1 Test material shall comply with product instructions, not provided for in the material should be given priority secondary or not less than two jade Meter test. Corn test weight should be 660kg/m3 ~ 770kg/m3. If the applicable provisions are not included in the material can optionally its corn In a material. If the provision applies only to crush straw vine-like substance, its provisions should be combined with local conditions to select the test material. 3.3.2 Test material moisture content. grain in 12% to 18%; straw vine-like substance of 8% to 17%. 3.3.3 Test various materials shall contain may cause damage to test prototype inclusions. ......

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