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GB/T 6971-2007Test method for feed mills (English PDF)

饲料粉碎机试验方法

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

November 1, 2007

Implementation date

January 1, 2008

Scope

GB/T 6971-2007 is the English-translated version of 饲料粉碎机试验方法.

GB/T 6971-2007 is the Chinese standard "Test method for feed mills". Its scope clause reads: 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. Its clauses include normative reference standard; test conditions and requirements.

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Document preview — GB/T 6971-2007

National Standard of the People's Republic of China

ICS: 65.060.99
Classification: B 93
Replacing: GB/T 6971-1986

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

1 Scope
2 Normative reference standard
3 Test conditions and requirements
3.1 Environmental conditions
3.2 Requirements for test equipment
3.3 Requirements test material

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.

......
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

Cited by

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Editions of GB/T 6971

Edition	Title	Revision	Status
GB/T 6971-2007	Test method for feed mills	current edition	Current
GB/T 6971-1986	Test method for feed mills	previous edition	Superseded

This page sells the current edition, GB/T 6971-2007. Earlier editions are listed for reference only.

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