光銘廠家直銷(xiāo)最實(shí)惠 刀盤(pán) 檔板 絞肉機(jī)刀片 粉末干粉壓制（PM）五金產(chǎn)品工藝及制品簡(jiǎn)介： 粉末冶金制品式以金屬粉末如:鐵粉﹑銅粉﹑不銹鋼粉等包括混入有非金屬粉末)為原料,用成形—燒結(jié)法 生產(chǎn)而成的,傳統(tǒng)的工藝流程為:混料—壓制—燒結(jié)—整形—后處理,即首先將配制的高純度的混合粉裝與 模具中,于一定的壓力下壓制成形,然后將壓坯在可控氣氛爐中,在低于基體材料熔點(diǎn)的溫度下進(jìn)行燒結(jié), 使粉末顆粒之間形成冶金結(jié)合. 粉末冶金工藝的優(yōu)點(diǎn)： 1.不需要或只需極少量切削加工, 2.材料移用率可高達(dá)97 %, 3.零件尺寸的制造公差較小且具有再現(xiàn)性, 4.材料成分可調(diào),5.零件表面光潔度較好, 6.可通過(guò)熱處理提高強(qiáng)度和耐磨性, 7.對(duì)于自潤(rùn)滑或過(guò)濾用,可提供具有可控孔隙度的材料或制品, 8.可制造其他金屬成形工藝不能制造的,形狀復(fù)雜或奇特的零件, 9.適于中等至大批量零件生產(chǎn).

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