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GB/T 28369-2012 English PDF

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GB/T 28369-2012: Ferroalloys -- Experimental methods for the evaluation of the quality variation and methods for checking the precision of sampling
Status: Valid
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GB/T 28369-2012English299 Add to Cart 3 days [Need to translate] Ferroalloys -- Experimental methods for the evaluation of the quality variation and methods for checking the precision of sampling Valid GB/T 28369-2012

PDF similar to GB/T 28369-2012


Standard similar to GB/T 28369-2012

GB/T 28296   GB/T 25050   GB/T 25051   GB/T 25049   GB/T 28372   GB/T 28371   

Basic data

Standard ID GB/T 28369-2012 (GB/T28369-2012)
Description (Translated English) Ferroalloys -- Experimental methods for the evaluation of the quality variation and methods for checking the precision of sampling
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H42
Classification of International Standard 77.100
Word Count Estimation 13,114
Quoted Standard GB/T 2272; GB/T 3282; GB/T 3648; GB/T 3649; GB/T 3795; GB/T 4008; GB/T 4009; GB/T 4010; GB/T 4139; GB/T 5683; GB/T 7737; GB/T 18249; GB/T 28371; GB/T 28372
Adopted Standard ISO 7087-1984, MOD
Regulation (derived from) National Standards Bulletin 2012 No. 9
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 evaluation of quality fluctuations ferroalloy test method described in order to determine the relevant standard random sampling and grading sampling parameters. It also provides a random sampling inspection and classification s

GB/T 28369-2012: Ferroalloys -- Experimental methods for the evaluation of the quality variation and methods for checking the precision of sampling


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ICS77.100 H42 National Standards of People's Republic of China Inspection and evaluation of quality variation ferroalloy Standard Test Method for Sampling Accuracy (ISO 7087. 1984, MOD) Issued on. 2013-02-01 2012-05-11 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard rule according to GB/T 1.1-2009 given draft. This revised standard adopts ISO 7087. 1984 "ferro-alloys - Assessment of quality variation and test methods for checking the precision of sampling" (in English). The standard structure and technical content (except document Normative) and ISO 7087. 1984 is consistent; normative references carve Do not replace the corresponding ISO standards with the corresponding national standards. with the GB/T 28372 instead of ISO 3713, replaced by GB/T 4010 ISO 4552, using GB/T 2272 instead of ISO 5445, using GB/T 3795 instead of ISO 5446, using GB/T 4008 instead of ISO 5447, With GB/T 5683 instead of ISO 5448, using GB/T 4009 instead of ISO 5449, using GB/T 3648 instead of ISO 5450, with GB/T 4139 instead of ISO 5451, using GB/T 3649 instead of ISO 5452, using GB/T 7737 instead of ISO 5453, using GB/T 3282 Instead of ISO 5454, using GB/T 18249 instead of ISO 7347, using GB/T 28371 instead of ISO 7373. The standard proposed by China Iron and Steel Association. This standard by the national pig iron and ferroalloy Standardization Technical Committee (SAC/TC318) centralized. This standard was drafted. China Steel Group Co., Ltd., Metallurgical Industry Information Standards Institute Jilin Ferroalloy. The main drafters of this standard. Liuxian Cheng, Wang Shuang, Chen Zibin. Inspection and evaluation of quality variation ferroalloy Standard Test Method for Sampling Accuracy

1 Scope

This standard specifies the test method for evaluating the quality of ferroalloy fluctuations, in order to determine the relevant criteria described in the random sampling and sample classification Parameters. It also provides for the inspection and classification random sampling sampling sampling accuracy.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated edition applies to this article Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 2272 ferrosilicon (GB/T 2272-2009, ISO 5445. 1980, MOD) GB/T 3282 ferrotitanium (GB/T 3282-2006, ISO 5454. 1980, MOD) GB/T 3648 tungsten iron GB/T 3649 ferromolybdenum (GB/T 3649-2008, ISO 5452. 1980, MOD) GB/T 3795 ferromanganese (GB/T 3795-2006, ISO 5446. 1980, MOD) GB/T 4008 manganese silicon alloy (GB/T 4008-2008, ISO 5447. 1980, MOD) GB/T 4009 SILICOCHROMIUM (GB/T 4009-2008, ISO 5449. 1980, MOD) GB/T 4010 ferroalloy chemical analysis and preparation of samples (GB/T 4010-1994, ISO 4552. 1987, MOD) GB/T 4139 ferrovanadium (GB/T 4139-2004, ISO 5451. 1980, MOD) GB/T 5683 ferrochrome (GB/T 5683-2008, ISO 5448. 1981, MOD) GB/T 7737 Ferroniobium GB/T 18249 Check ferroalloy sampling and test methods of sample preparation deviation (GB/T 18249-2000, eqvISO 7347. 1987) Test methods for accuracy GB/T 28371 alloy sample checks and dividing (GB/T 28371-2012, ISO 7373. 1987, MOD) GB/T 28372 ferroalloy sampling and sample preparation General (GB/T 28372-2012, ISO 3713. 1987, MOD) General requirements 3 tests 3.1 Quality fluctuations Quality Evaluation fluctuations ferroalloy uniformity of scale, with a standard deviation σ represented to represent. It should be among a random sample of parts like Standard from standard deviation (σi) sampling and grading of the packaging unit between deviation (σb) and the standard deviation within the packaging unit (σW). Note 1. The random sample suitable for bulk (can not be broken or crushed) delivery ferroalloy batch. Note 2. The classification applies to the sample delivery batch packaging unit. 3.2 Quality Characteristics For determining the quality characteristics of quality fluctuations are given in the relevant standard ferroalloy sampling method.

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