GB 4374.7-1984 Chemical analysis methods for magnesium powder and aluminum-magnesium alloy powders - Gravimetric method for determination of hydrochloric acid insoluble matter

time: 2024-08-04 11:25:46
  • GB 4374.7-1984
  • Abolished

Basic Information

standard classification number

  • Standard ICS number:

    Metallurgy>>Non-ferrous metals>>77.120.20 Magnesium and magnesium alloys
  • China Standard Classification Number:

    Metallurgy>>Metal Chemical Analysis Methods>>H12 Light Metal and Its Alloy Analysis Methods

associated standards

Publication information

Other Information

  • Review date:

    2004-10-14
  • Drafting Organization:

    Northeast Light Alloy Processing Plant
  • Focal point Organization:

    National Technical Committee for Standardization of Nonferrous Metals
  • Publishing Department:

    China Nonferrous Metals Industry Association
  • Competent Authority:

    China Nonferrous Metals Industry Association
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Summary:

GB 4374.7-1984 Chemical analysis methods for magnesium powder and aluminum-magnesium alloy powders Gravimetric determination of hydrochloric acid insoluble matter GB4374.7-1984 standard download decompression password: www.bzxz.net
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Some standard content:

中华人民共和国国家标准
镁粉和铝镁合金粉化学分析方法重量法测定盐酸不溶物量
Methods for chemical analysis of magnesium powdersand aluminium -magnesium alloy powdersThe gravimetric method for the determinationof insoluble content in hydrochloric acid本标准适用1镁粉中盐酸不溶物量的测定。测定范固:不人于0.20%。本标准遵宇GB1467-78《治金产品化学分析方法标准的总则及般规定》,方法提要
UDC 669.721 + 669
715'721-492
GB 4374.7-84
试样用盐酸溶解后,过滤并灼烧残渣,根据盐酸不溶物质量计算其百分含量。试剂
2.1盐酸(1+1)。
2.2硝酸银溶液(1%)。
高温炉。
分析步骤
4.1测定数量
行测两份试样,取其均值
4.2试样量
称取5.00g试样。
4.3测定bzxz.net
4.3.1将试样(4.2)置于500ml烧杯中,用少量水润湖。4.3.2缓慢加人90ml盐酸(2.1),待试样完全溶解后点沸1min,取下,用定滤纸过滤,并用热水洗涤至滤出液用硝酸银溶液(2.2)检查无氨离了反应为出。4.3.3将滤纸及語酸不溶物(4.3.2置于己灼烧并称至恒肚的瓷址蜗中,先1炉灰化,然后催高温炉」700C灼烧40min,取壮,置于「燥器中,冷即全室温,称最,并重复灼烧全恒最。5
分析结果的计算
按下武让算喆酸不溶物的百分舍鼠:盐酸不溶物(%)
式中:m,--增埚利盐酸不溶物的质量,g;国家标准局19840430发布
19850401实施
充许差
性蜗的质最,;
试样最,g。
GB4374.7-84
实验室之间分析结果的差值应不大下表所列允许差。战酸不溶物鼠
.0.050
-.05 ~ 1.10
0.10~0.20
附加说明:
本标准由中华人民共利用金工业部提出,本标准的东北轻合金加!负资起草本标准山东北轻合金加广、西北加广起草。本标准主要起草人尤贵法、“亚车。162
充许差
-HTi KAoNi KAca-
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