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鑄鐵配重塊是用于增(zeng)加(jia)自身重(zhong)量(liang)來保持(chi)平(ping)衡的(de)重(zhong)物,是將噴丸機熔煉(lian)成符(fu)合 要求的(de)液(ye)體并(bing)澆進(jin)鑄型里,經冷卻凝(ning)固、清整處(chu)理后(hou)得到有預定形(xing)狀、尺(chi)寸(cun)和性能(neng)的(de)鑄件的(de)工(gong)(gong)藝過程。現代機械制造工(gong)(gong)業(ye)的(de)基礎(chu)工(gong)(gong)藝之一。
工(gong)作面(mian)(mian)小(xiao)范圍內的(de)局(ju)(ju)部(bu)變化是指加(jia)工(gong)表面(mian)(mian)不平(ping)(ping)整(zheng),有變形,灰口鐵(tie)(tie)(tie)(tie)可以看作是鋼(gang)的(de)基體與片狀石墨(mo)的(de)夾雜。因此石墨(mo)片越少,越細(xi),為了(le)保證(zheng)鑄(zhu)鐵(tie)(tie)(tie)(tie)在澆(jiao)鑄(zhu)能夠(gou)得(de)到(dao)灰口,且不至于得(de)到(dao)過多和(he)粗(cu)大的(de)石墨(mo)片,這里所說(shuo)的(de)工(gong)作面(mian)(mian)小(xiao)范圍,對小(xiao)鑄(zhu)鐵(tie)(tie)(tie)(tie)平(ping)(ping)板而(er)言是局(ju)(ju)部(bu)位置,對大鑄(zhu)鐵(tie)(tie)(tie)(tie)平(ping)(ping)板而(er)言是局(ju)(ju)部(bu)面(mian)(mian)積。鑄(zhu)鐵(tie)(tie)(tie)(tie)平(ping)(ping)板的(de)平(ping)(ping)整(zheng)性反映了(le)鑄(zhu)鐵(tie)(tie)(tie)(tie)平(ping)(ping)板局(ju)(ju)部(bu)誤差鑄(zhu)鐵(tie)(tie)(tie)(tie)平(ping)(ping)板的(de)局(ju)(ju)部(bu)誤差是指鑄(zhu)鐵(tie)(tie)(tie)(tie)平(ping)(ping)板工(gong)作面(mian)(mian)局(ju)(ju)部(bu)平(ping)(ping)面(mian)(mian)度加(jia)工(gong)質量,即表面(mian)(mian)粗(cu)糙度。
鑄件的精度和生產過程的經濟表現,主要取決于這道工序。在很多現代化的配重鐵車(che)間里,造(zao)型造(zao)芯(xin)都實現了機械化或自動化。常用的砂型造(zao)型造(zao)芯(xin)設備有高、中、低壓造(zao)型機、拋(pao)砂機、無(wu)箱(xiang)射壓造(zao)型機、射芯(xin)機、冷和熱芯(xin)盒(he)機等(deng)。
叉車配重鐵(tie)(tie)工藝可分為三個(ge)基本(ben)部分,即(ji)配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)金(jin)(jin)(jin)(jin)屬(shu)(shu)(shu)準(zhun)備(bei)、鑄(zhu)(zhu)型(xing)準(zhun)備(bei)和鑄(zhu)(zhu)件處理(li)。 配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)金(jin)(jin)(jin)(jin)屬(shu)(shu)(shu)是(shi)指配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)生產(chan)中(zhong)用于澆(jiao)注鑄(zhu)(zhu)件的(de)金(jin)(jin)(jin)(jin)屬(shu)(shu)(shu)材料(liao),它是(shi)以一(yi)種金(jin)(jin)(jin)(jin)屬(shu)(shu)(shu)元素(su)為主要(yao)(yao)成(cheng)分,并(bing)加(jia)入(ru)其(qi)他金(jin)(jin)(jin)(jin)屬(shu)(shu)(shu)或(huo)非金(jin)(jin)(jin)(jin)屬(shu)(shu)(shu)元素(su)而組成(cheng)的(de)合(he)金(jin)(jin)(jin)(jin),習慣上稱為配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)合(he)金(jin)(jin)(jin)(jin),主要(yao)(yao)有鑄(zhu)(zhu)鐵(tie)(tie)、鑄(zhu)(zhu)鋼和配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)有色合(he)金(jin)(jin)(jin)(jin)。叉車配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)按造型(xing)材料(liao)的(de)不同,又可分為兩大類(lei):一(yi)類(lei)以天然礦(kuang)產(chan)砂石作為主要(yao)(yao)造型(xing)材料(liao),如(ru)熔模配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)、殼型(xing)配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)、負壓配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)、泥型(xing)配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)、實型(xing)配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)、陶瓷(ci)型(xing)配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)等(deng);一(yi)類(lei)以金(jin)(jin)(jin)(jin)屬(shu)(shu)(shu)作為主要(yao)(yao)鑄(zhu)(zhu)型(xing)材料(liao),如(ru)金(jin)(jin)(jin)(jin)屬(shu)(shu)(shu)型(xing)配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)、離(li)心配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)、連(lian)續配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)、叉車配(pei)(pei)(pei)(pei)件鐵(tie)(tie)、低(di)壓配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)等(deng)。
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