一、北美 1987年金属粉末产量为290,300吨,比1986年增加6％。铁粉产量同期增加6.6％,创217,597吨的新记录,其中用于粉末冶金零件和摩擦材料的铁粉增加5.9％,创184,697吨的新记录。1988年第一季度比1987年同期的铁粉产量增加7.3％。北美近几年来铜粉产量稳定下降,但1987年回升,达19,300吨,比1986年增加10％。碳化钨粉 First, the North American metal powder production in 1987 was 290,300 tons, an increase of 6% over 1986. Output of iron powder increased 6.6% over the same period, creating a new record of 217,597 tons. Of the total, iron powder used for powder metallurgy parts and friction materials increased 5.9% to a new record of 184,697 tons. Iron production in the first quarter of 1988 over the same period of 1987 increased by 7.3%. Copper production in North America has been steadily declining in recent years, but recovered to 19,300 tons in 1987, an increase of 10% over 1986. Tungsten carbide powder