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鑄鐵配重塊是(shi)用于增(zeng)加自身重量來保持平衡的重物(wu),是(shi)將噴丸機(ji)熔煉成符合 要求的液體并(bing)澆(jiao)進鑄型里,經冷卻凝固、清整處理后得到有預定形狀、尺寸(cun)和性能的鑄件(jian)的工藝過(guo)程(cheng)。現(xian)代機(ji)械制造(zao)工業(ye)的基礎工藝之一。
工(gong)(gong)作(zuo)面(mian)(mian)(mian)小(xiao)(xiao)范圍內(nei)的(de)(de)局部(bu)(bu)變(bian)化是(shi)(shi)指(zhi)加(jia)工(gong)(gong)表面(mian)(mian)(mian)不平(ping)(ping)(ping)(ping)整,有變(bian)形,灰口鐵(tie)可(ke)以看作(zuo)是(shi)(shi)鋼(gang)的(de)(de)基體與(yu)片(pian)狀(zhuang)石墨的(de)(de)夾雜。因此石墨片(pian)越少,越細(xi),為了保證鑄(zhu)鐵(tie)在澆鑄(zhu)能夠(gou)得到(dao)灰口,且(qie)不至于得到(dao)過多和粗大的(de)(de)石墨片(pian),這里(li)所說的(de)(de)工(gong)(gong)作(zuo)面(mian)(mian)(mian)小(xiao)(xiao)范圍,對小(xiao)(xiao)鑄(zhu)鐵(tie)平(ping)(ping)(ping)(ping)板而(er)言是(shi)(shi)局部(bu)(bu)位置,對大鑄(zhu)鐵(tie)平(ping)(ping)(ping)(ping)板而(er)言是(shi)(shi)局部(bu)(bu)面(mian)(mian)(mian)積。鑄(zhu)鐵(tie)平(ping)(ping)(ping)(ping)板的(de)(de)平(ping)(ping)(ping)(ping)整性反映了鑄(zhu)鐵(tie)平(ping)(ping)(ping)(ping)板局部(bu)(bu)誤差(cha)鑄(zhu)鐵(tie)平(ping)(ping)(ping)(ping)板的(de)(de)局部(bu)(bu)誤差(cha)是(shi)(shi)指(zhi)鑄(zhu)鐵(tie)平(ping)(ping)(ping)(ping)板工(gong)(gong)作(zuo)面(mian)(mian)(mian)局部(bu)(bu)平(ping)(ping)(ping)(ping)面(mian)(mian)(mian)度(du)加(jia)工(gong)(gong)質量,即表面(mian)(mian)(mian)粗糙度(du)。
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間里,造型(xing)造芯(xin)都實現了機(ji)械化或自動化。常(chang)用的砂型(xing)造型(xing)造芯(xin)設備有(you)高(gao)、中、低壓造型(xing)機(ji)、拋砂機(ji)、無(wu)箱(xiang)射壓造型(xing)機(ji)、射芯(xin)機(ji)、冷和(he)熱芯(xin)盒機(ji)等(deng)。
叉車配重鐵(tie)(tie)工藝可分為(wei)三個(ge)基(ji)本部分,即配(pei)(pei)(pei)(pei)重(zhong)(zhong)鐵(tie)(tie)金(jin)屬(shu)(shu)(shu)準(zhun)備(bei)、鑄型(xing)(xing)準(zhun)備(bei)和鑄件處理。 配(pei)(pei)(pei)(pei)重(zhong)(zhong)鐵(tie)(tie)金(jin)屬(shu)(shu)(shu)是指配(pei)(pei)(pei)(pei)重(zhong)(zhong)鐵(tie)(tie)生產中用于澆(jiao)注鑄件的金(jin)屬(shu)(shu)(shu)材(cai)料(liao)(liao),它是以一(yi)(yi)種金(jin)屬(shu)(shu)(shu)元素為(wei)主(zhu)要(yao)(yao)成分,并加入其他金(jin)屬(shu)(shu)(shu)或非金(jin)屬(shu)(shu)(shu)元素而(er)組成的合(he)金(jin),習慣上稱為(wei)配(pei)(pei)(pei)(pei)重(zhong)(zhong)鐵(tie)(tie)合(he)金(jin),主(zhu)要(yao)(yao)有鑄鐵(tie)(tie)、鑄鋼(gang)和配(pei)(pei)(pei)(pei)重(zhong)(zhong)鐵(tie)(tie)有色合(he)金(jin)。叉車配(pei)(pei)(pei)(pei)重(zhong)(zhong)鐵(tie)(tie)按造型(xing)(xing)材(cai)料(liao)(liao)的不同,又可分為(wei)兩(liang)大類:一(yi)(yi)類以天然礦產砂石作為(wei)主(zhu)要(yao)(yao)造型(xing)(xing)材(cai)料(liao)(liao),如(ru)熔模(mo)配(pei)(pei)(pei)(pei)重(zhong)(zhong)鐵(tie)(tie)、殼型(xing)(xing)配(pei)(pei)(pei)(pei)重(zhong)(zhong)鐵(tie)(tie)、負壓配(pei)(pei)(pei)(pei)重(zhong)(zhong)鐵(tie)(tie)、泥型(xing)(xing)配(pei)(pei)(pei)(pei)重(zhong)(zhong)鐵(tie)(tie)、實型(xing)(xing)配(pei)(pei)(pei)(pei)重(zhong)(zhong)鐵(tie)(tie)、陶瓷型(xing)(xing)配(pei)(pei)(pei)(pei)重(zhong)(zhong)鐵(tie)(tie)等;一(yi)(yi)類以金(jin)屬(shu)(shu)(shu)作為(wei)主(zhu)要(yao)(yao)鑄型(xing)(xing)材(cai)料(liao)(liao),如(ru)金(jin)屬(shu)(shu)(shu)型(xing)(xing)配(pei)(pei)(pei)(pei)重(zhong)(zhong)鐵(tie)(tie)、離心配(pei)(pei)(pei)(pei)重(zhong)(zhong)鐵(tie)(tie)、連(lian)續(xu)配(pei)(pei)(pei)(pei)重(zhong)(zhong)鐵(tie)(tie)、叉車配(pei)(pei)(pei)(pei)件鐵(tie)(tie)、低壓配(pei)(pei)(pei)(pei)重(zhong)(zhong)鐵(tie)(tie)等。
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