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选用FSSS粒度为3μm～4μm的FW—1型工业钨粉，在湿氢中经1200℃1h的高温处理，粉末的粒度、粒形都产生了相应的变化，并具有良好的成型性能。该粉末在超高压条件下，生坯的相对质量密度可达90％以上。烧结实验证实，这种高密度的生坯，具有优良的烧结性能，经1800℃4h或2100℃1h烧结，其相对质量密度分别达到95．65％和94．76％。
The FW-1 type industrial tungsten powder with the FSSS particle size of 3μm ~ 4μm was selected and treated in high temperature at 1200 ℃ for 1h in wet hydrogen. The particle size and grain shape of the powder produced corresponding changes, and had good formability. The powder under the conditions of ultra-high pressure, the relative mass density of the green body up to 90%. Sintering experiments confirmed that this high-density green body has excellent sintering properties. After sintering at 1800 ℃ for 4h or 2100 ℃ for 1h, the relative mass density reached 95.65% and 94.76% respectively.