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据美刊Materials Engineering Vol.97,No.1及No.4报导,美国Kennametal公司最近研究成功了一种比重比铅大50—60％的粉末钨合金,其主要成分是钨95％,粘结剂5％。烧结后的成品,多为圆棒形。其直径由1/8时至7吋;长度可达50吋。也可以制成其他形状。重量由几克至450公斤。这种粉末钨合金加热到1900°F(1038℃)后放八冷水中不会产生裂纹。在1700°F(927℃)的高温下可以长期工作。粉末钨合金的主要特点是比重大,故可用作配重、平衡块、飞轮缘及放射线防护等。它在磁场内不带磁性,可在磁场内校准用。其热膨胀系数小,用一般工具就能加工出高精密度的零件。粉末钨合金的防腐性
According to the American Journal of Materials Engineering Vol. 97, No. 1 and No. 4 reported that the United States Kennametal company recently succeeded in the study of a 50-60% larger than the proportion of lead powder tungsten alloy, the main component is 95% tungsten, bonding Agent 5%. After sintering the finished product, mostly round bar-shaped. Its diameter from 1/8 to 7 inches; length of up to 50 inches. Other shapes can also be made. Weight from a few grams to 450 kg. This powder tungsten alloy is heated to 1900 ° F (1038 ° C) and placed in eight cold water without cracking. Long-term operation at high temperatures of 1700 ° F (927 ° C). Powder tungsten alloy is the main characteristic of large proportion, it can be used as counterweight, balance block, flywheel edge and radiation protection. It is not magnetic in the magnetic field can be calibrated in the magnetic field. The thermal expansion coefficient is small, with the general tools can produce high-precision parts. Anticorrosion of powder tungsten alloy