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鑄鐵配重塊是用于(yu)增加自身重(zhong)量來保持平衡(heng)的重(zhong)物,是將(jiang)噴丸機熔煉成符合 要求的液體(ti)并澆進鑄型里,經冷(leng)卻凝固、清整處理(li)后得(de)到(dao)有預定形(xing)狀、尺寸和(he)性能的鑄件(jian)的工藝過程。現(xian)代機械制(zhi)造工業的基(ji)礎工藝之一。
工(gong)作面(mian)小(xiao)范(fan)圍(wei)內的(de)(de)局部(bu)變化是(shi)指加工(gong)表面(mian)不平(ping)整(zheng),有變形(xing),灰口鐵(tie)(tie)可以(yi)看作是(shi)鋼的(de)(de)基(ji)體(ti)與片(pian)狀石墨的(de)(de)夾(jia)雜。因此石墨片(pian)越(yue)少,越(yue)細,為了(le)保證鑄(zhu)鐵(tie)(tie)在澆(jiao)鑄(zhu)能夠得到(dao)灰口,且(qie)不至于得到(dao)過(guo)多(duo)和粗(cu)大的(de)(de)石墨片(pian),這里所說(shuo)的(de)(de)工(gong)作面(mian)小(xiao)范(fan)圍(wei),對(dui)小(xiao)鑄(zhu)鐵(tie)(tie)平(ping)板(ban)(ban)(ban)而(er)言是(shi)局部(bu)位置,對(dui)大鑄(zhu)鐵(tie)(tie)平(ping)板(ban)(ban)(ban)而(er)言是(shi)局部(bu)面(mian)積。鑄(zhu)鐵(tie)(tie)平(ping)板(ban)(ban)(ban)的(de)(de)平(ping)整(zheng)性反(fan)映了(le)鑄(zhu)鐵(tie)(tie)平(ping)板(ban)(ban)(ban)局部(bu)誤差(cha)鑄(zhu)鐵(tie)(tie)平(ping)板(ban)(ban)(ban)的(de)(de)局部(bu)誤差(cha)是(shi)指鑄(zhu)鐵(tie)(tie)平(ping)板(ban)(ban)(ban)工(gong)作面(mian)局部(bu)平(ping)面(mian)度加工(gong)質量,即表面(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間里,造(zao)(zao)型(xing)(xing)造(zao)(zao)芯都實現(xian)了機械化或自動化。常用的砂型(xing)(xing)造(zao)(zao)型(xing)(xing)造(zao)(zao)芯設(she)備(bei)有(you)高、中、低壓(ya)造(zao)(zao)型(xing)(xing)機、拋砂機、無(wu)箱(xiang)射壓(ya)造(zao)(zao)型(xing)(xing)機、射芯機、冷和熱芯盒機等。
叉車配重鐵(tie)工藝可分(fen)為(wei)三個(ge)基本部(bu)分(fen),即配(pei)(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)金(jin)(jin)屬(shu)準(zhun)備(bei)、鑄型(xing)(xing)準(zhun)備(bei)和鑄件(jian)(jian)處理。 配(pei)(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)金(jin)(jin)屬(shu)是(shi)指配(pei)(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)生(sheng)產(chan)中(zhong)用于澆注鑄件(jian)(jian)的(de)金(jin)(jin)屬(shu)材(cai)料(liao),它是(shi)以一(yi)種金(jin)(jin)屬(shu)元(yuan)素為(wei)主要(yao)成分(fen),并(bing)加入其他金(jin)(jin)屬(shu)或非(fei)金(jin)(jin)屬(shu)元(yuan)素而(er)組成的(de)合(he)金(jin)(jin),習慣上稱為(wei)配(pei)(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)合(he)金(jin)(jin),主要(yao)有鑄鐵(tie)、鑄鋼(gang)和配(pei)(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)有色合(he)金(jin)(jin)。叉車配(pei)(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)按造(zao)型(xing)(xing)材(cai)料(liao)的(de)不同,又可分(fen)為(wei)兩大類(lei)(lei):一(yi)類(lei)(lei)以天然礦產(chan)砂石作為(wei)主要(yao)造(zao)型(xing)(xing)材(cai)料(liao),如熔模(mo)配(pei)(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)、殼(ke)型(xing)(xing)配(pei)(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)、負壓配(pei)(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)、泥型(xing)(xing)配(pei)(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)、實(shi)型(xing)(xing)配(pei)(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)、陶瓷型(xing)(xing)配(pei)(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)等;一(yi)類(lei)(lei)以金(jin)(jin)屬(shu)作為(wei)主要(yao)鑄型(xing)(xing)材(cai)料(liao),如金(jin)(jin)屬(shu)型(xing)(xing)配(pei)(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)、離(li)心配(pei)(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)、連(lian)續配(pei)(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)、叉車配(pei)(pei)(pei)(pei)(pei)(pei)件(jian)(jian)鐵(tie)、低壓配(pei)(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)等。
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