国标gb t4295-93是什么?
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碳化钨粉的技术条件是GB/T4295—93,一般执行的是企业内控标准,部分企业技术条件见表6-6-42、表6-6-43。
表6-6-42 碳化钨粉质量规格
类 别 费氏平均粒度(μ) 总碳量(%) 游离碳(%)
WC-1 ≤1.0 6.08~6.18 ≤0.08
WC-2 1~1.99 6.08~6.18 ≤0.08
WC-3 2~3.99 6.08~6.18 ≤0.08
WC-4 4~5.99 6.08~6.18 ≤0.08
WC-5 6~7.99 6.08~6.18 ≤0.08
WC-6 8~11.99 6.08~6.18 ≤0.08
WC-7 12~15.99 6.08~6.18 ≤0.08
WC-8 ≥16 6.08~7.18 ≤0.08
表6-6-43 碳化钨粉化学成分指标
级别\含量% WC Fe Mo Al Si Ca Mn Mg Ni Na
FWC-1 ≥99.8 ≤0.04 ≤0.010 ≤0.001 ≤0.01 ≤0.005 ≤ 0.002 ≤0.002 ≤0.005 ≤0.003
FWC-2 ≥99.7 ≤0.06 ≤0.015 ≤0.002 ≤0.01 ≤0.008 ≤ 0.002 ≤0.004 ≤0.008 ≤0.005
表6-6-42 碳化钨粉质量规格
类 别 费氏平均粒度(μ) 总碳量(%) 游离碳(%)
WC-1 ≤1.0 6.08~6.18 ≤0.08
WC-2 1~1.99 6.08~6.18 ≤0.08
WC-3 2~3.99 6.08~6.18 ≤0.08
WC-4 4~5.99 6.08~6.18 ≤0.08
WC-5 6~7.99 6.08~6.18 ≤0.08
WC-6 8~11.99 6.08~6.18 ≤0.08
WC-7 12~15.99 6.08~6.18 ≤0.08
WC-8 ≥16 6.08~7.18 ≤0.08
表6-6-43 碳化钨粉化学成分指标
级别\含量% WC Fe Mo Al Si Ca Mn Mg Ni Na
FWC-1 ≥99.8 ≤0.04 ≤0.010 ≤0.001 ≤0.01 ≤0.005 ≤ 0.002 ≤0.002 ≤0.005 ≤0.003
FWC-2 ≥99.7 ≤0.06 ≤0.015 ≤0.002 ≤0.01 ≤0.008 ≤ 0.002 ≤0.004 ≤0.008 ≤0.005
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