GB/T 34905-2017 English PDF

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GB/T 34905-2017: Sintered metal materials -- Determination of the level of cleanliness of powder-metallurgy parts
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 34905-2017	119	Add to Cart	3 days	Sintered metal materials -- Determination of the level of cleanliness of powder-metallurgy parts	Valid

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Basic data

Standard ID: GB/T 34905-2017 (GB/T34905-2017)
Description (Translated English): Sintered metal materials -- Determination of the level of cleanliness of powder-metallurgy parts
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H16
Classification of International Standard: 77.160
Word Count Estimation: 6,674
Date of Issue: 2017-11-01
Date of Implementation: 2018-05-01
Regulation (derived from): National Standard Announcement 2017 No. 29
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

GB/T 34905-2017: Sintered metal materials -- Determination of the level of cleanliness of powder-metallurgy parts

---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.
Sintered metal materials-Determination of the level of cleanliness of powder-metallurgy parts ICS 77.160 H16 National Standards of People's Republic of China Sintered metal materials powder metallurgy components Determination of cleanliness (ISO 28279.2010, MOD) Posted.2017-11-01 2018-05-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard uses the redrafted law to amend the use of ISO 28279.2010 "sintered metal powder metallurgy parts cleanliness Determination. " This standard compared with the ISO 28279.2010 in the structure made the following adjustments. --- National standards 5.1.1,5.1.2,5.1.3,5.1.4 corresponding to the international standards 5.1,5.2,5.3,5.4; --- National standards 5.2.1,5.2.2,5.2.3,5.2.4,5.2.5 corresponding to the international standards 5.5,5.6,5.7,5.8,5.9; --- National standards 5.3.1,5.3.2 corresponding to the international standards 5.10,5.11; --- The last paragraph of the international standard content, as Chapter 8, in line with China's standards for writing habits. This standard and ISO 28279.2010 compared to the existence of technical differences. The clauses covered by these differences have been marked by the vertical single line (|) at the margin of the outer margin. The specific differences are as follows. --- International Standard Chapter 2 (symbols and units) N test sample number, the original unit was "-", changed to "pieces", the actual use of mining The unit is "piece"; --- The International Standard Chapter 3 (Principle) in the magnifying glass, stereo microscope replaced by microscope, the use of multiple amplification in international standards Mirror, stereo microscope, microscope, before and after the presentation confusion, the actual operation of the microscope to meet the test requirements, to protect Standard content consistent before and after the uniform use of microscope; --- Remove the international standard 4.12 in "stereomicroscope (at least 10 times)", uniform use of the microscope; --- Removed the international standard 5.11 and Figure 3 "stereo microscope", unified use of the microscope; --- Removed the international standard 5.6 in the "operation, to ensure that the solvent fully wet powder metallurgy parts," the corresponding national standard 5.2.2 has covered this content; --- In the International Standard Chapter 7 (test report) added. "F) filter the solvent information; g) pollutant extraction method; h) filter material Information "to make the report more complete and objective; --- The last paragraph of international standards, "In the case of supply and demand can be agreed to replace other pore filters, solvents and extraction of pollution Material method ", an increase of the amount of solvent can be replaced to ensure that the surface of large parts for the cleanliness of the required solution dose. This standard is proposed and managed by China Machinery Industry Federation. This standard was drafted by. East New Material Group Co., Ltd., Shanghai Automotive Powder Metallurgy Co., Ltd., Jiangsu MSC Haw Par Ball Group Co., Ltd., Yangzhou Paul to get Technology Industrial Co., Ltd., Chongqing Huafu Industrial Co., Ltd.. The drafters of this standard. Bao Chong Xi, Maozeng Guang, Zhang Zhiyong, Qin Xiaodong, Shen Chengxiu, official Jinsong, Lei phase Bing, Zhong Huahui, Wang Chunguan, Wang Jinsong, Cao Hongbin, Feng Weili. Sintered metal materials powder metallurgy components Determination of cleanliness

1 Scope

This standard specifies the quality of the powder metallurgy parts surface contaminants and the determination of the nature of the method (ie, PM parts cleanliness). This standard applies to the measurement of cleanliness of parts manufactured by powder metallurgy process.

2 symbols and units

For the purpose of this standard, the following symbols and units are used. Symbol Interpretation Unit C The quality of the pollutant mg / piece m1 before cleaning clean, dry 5μm filter quality (4.4) g m2 After filtration with contaminants, dried 5μm filter quality (4.4) g N Test sample quantity

3 principle

The powder metallurgy parts with a filtered solvent pressure washing, and then washed the solvent again filtered to obtain parts Surface contaminants. The filtered residue was weighed and examined with a microscope to determine its nature.

4 instruments

4.1 filter funnel. 4.2 filter bottle, the minimum volume of 2L. 4.3 vacuum pump. 4.4 filter, pore size of 5μm, made of polyester (this material is preferred) or polyamide (depending on the type of solvent selection filter), diameter 20mm ~ 50mm. 4.5 filter, the maximum pore size of 1μm, made of polyester material (preferred use of this material), polyamide or cellulose (according to the choice of solvent filter class Type), diameter 20mm ~ 50mm. 4.6 analytical balance, the minimum range of 20g, accuracy 0.0001g. 4.7 Petri dish without cover. 4.8 oven, the temperature of at least 100 ℃, accuracy of 10 ℃. 4.9 dryer. 4.10 liquid pressure gun. 4.11 Solvent (petroleum spirit). 4.12 microscope. 4.13 Microscope slides. 4.14 flat stainless steel clamp. ......

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