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鍛造:主要是在高(gao)溫下用擠(ji)壓的方法成型。可以細(xi)化(hua)制件中(zhong)的晶(jing)粒。
鑄造和鍛(duan)造電爐(lu)(lu)爐(lu)(lu)襯(chen)的(de)打(da)爐(lu)(lu)料選(xuan)擇:需要根據(ju)各自的(de)爐(lu)(lu)噸位大小、出水溫度、熔(rong)煉的(de)金屬(shu)情況(kuang)等來(lai)選(xuan)擇,對于施工工藝的(de)選(xuan)擇盡可能(neng)的(de)選(xuan)擇經驗豐富的(de)爐(lu)(lu)工,并(bing)且根據(ju)爐(lu)(lu)料廠家的(de)現場(chang)指(zhi)導(dao)建議,“因地適宜”的(de)選(xuan)擇爐(lu)(lu)料和打(da)爐(lu)(lu)。
6、鑄(zhu)(zhu)造工(gong)藝通常(chang)包括(kuo):①鑄(zhu)(zhu)型(xing)(xing)(xing)(xing)(xing)(使液態金(jin)屬(shu)(shu)(shu)成為(wei)固態鑄(zhu)(zhu)件(jian)的容器)準(zhun)備,鑄(zhu)(zhu)型(xing)(xing)(xing)(xing)(xing)按所用材料可分(fen)為(wei)砂型(xing)(xing)(xing)(xing)(xing)、金(jin)屬(shu)(shu)(shu)型(xing)(xing)(xing)(xing)(xing)、陶瓷型(xing)(xing)(xing)(xing)(xing)、泥(ni)型(xing)(xing)(xing)(xing)(xing)、石墨(mo)型(xing)(xing)(xing)(xing)(xing)等,按使用次數可分(fen)為(wei)一(yi)次性(xing)型(xing)(xing)(xing)(xing)(xing)、半(ban)型(xing)(xing)(xing)(xing)(xing)和(he)型(xing)(xing)(xing)(xing)(xing),鑄(zhu)(zhu)型(xing)(xing)(xing)(xing)(xing)準(zhun)備的優劣(lie)是影響鑄(zhu)(zhu)件(jian)質量的主要因素;②鑄(zhu)(zhu)造金(jin)屬(shu)(shu)(shu)的熔(rong)化與澆注(zhu),鑄(zhu)(zhu)造金(jin)屬(shu)(shu)(shu)(鑄(zhu)(zhu)造合(he)金(jin))主要有鑄(zhu)(zhu)鐵、鑄(zhu)(zhu)鋼(gang)和(he)鑄(zhu)(zhu)造有色合(he)金(jin);③鑄(zhu)(zhu)件(jian)處(chu)(chu)理和(he)檢驗,鑄(zhu)(zhu)件(jian)處(chu)(chu)理包括(kuo)清除型(xing)(xing)(xing)(xing)(xing)芯和(he)鑄(zhu)(zhu)件(jian)表面異物(wu)、切除澆冒口、鏟磨(mo)毛(mao)刺和(he)披縫等凸出物(wu)以及熱處(chu)(chu)理、整(zheng)形、防(fang)銹處(chu)(chu)理和(he)粗(cu)加(jia)工(gong)等。