WD-7 Medium-Low Temperature Powder | Global Trade leader ecrobot

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WD-7 Medium-Low Temperature Powder

Posting date : Mar 28, 2014

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CHEMICAL | Inorganic

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28-

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WD-7 is a medium-low temperature powder with heavy silicone treatment and higher tap density, especially suitable for aluminum elements. Elements stuffed with this material are proposed to be annealed at 300℃ for 1.5 hours or at 420℃ for 15mins. Chemical Analysis (%) MgO CaO Al2O2 Fe2O3 SiO2 ≥94.0 ≤1.5 ≤0.9 ≤0.5 ≤2.5 Particle Distribution Mesh ＋40 ＋60 ＋80 ＋140 ＋200 ＋325 －325 Dia(um) ＋425 ＋250 ＋180 ＋106 ＋75 ＋45 －45 Quantity (%) 0－1 26－38 16－24 18－28 6－14 8－14 0－8 Tap Density 2.36－2.50g/cm3 Flow 3# Ford Cup（φ2.165mm－2.185mm）：160－240s/100g 4# Ford Cup（φ3.97mm－4.01mm）：34－40s/100g Electrical Property Testing Condition Tube ……Copper coated iron Reduction ……φ8.0mm→φ6.6mm Wire ……0Cr25A15，φ0.30mm Helix ……φ2.3mm Heated length ……30.0cm－32.0cm Energized period ……15 mins Remark: Forusers’reference, the chart here shows typical values of performance by this type of powder.