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鑄鐵配重塊是(shi)用于(yu)增加(jia)自身重(zhong)量(liang)來保(bao)持平衡的(de)重(zhong)物(wu),是(shi)將(jiang)噴丸(wan)機熔煉成符合(he) 要(yao)求的(de)液體并澆進鑄型里,經冷(leng)卻凝(ning)固(gu)、清(qing)整(zheng)處理后得到有預(yu)定形狀、尺寸和(he)性能的(de)鑄件的(de)工(gong)(gong)藝過程。現(xian)代機械制造(zao)工(gong)(gong)業(ye)的(de)基礎工(gong)(gong)藝之一(yi)。
工(gong)作面(mian)小范(fan)圍內的(de)(de)局(ju)(ju)部(bu)變化(hua)是(shi)指加(jia)工(gong)表面(mian)不平(ping)(ping)整,有(you)變形,灰(hui)口鐵(tie)可(ke)以看作是(shi)鋼的(de)(de)基體與片(pian)狀石(shi)墨(mo)的(de)(de)夾雜。因此石(shi)墨(mo)片(pian)越少,越細,為了(le)保證鑄鐵(tie)在澆鑄能夠(gou)得(de)到灰(hui)口,且不至于得(de)到過(guo)多和粗(cu)大的(de)(de)石(shi)墨(mo)片(pian),這里所說(shuo)的(de)(de)工(gong)作面(mian)小范(fan)圍,對小鑄鐵(tie)平(ping)(ping)板(ban)(ban)而(er)(er)言是(shi)局(ju)(ju)部(bu)位置,對大鑄鐵(tie)平(ping)(ping)板(ban)(ban)而(er)(er)言是(shi)局(ju)(ju)部(bu)面(mian)積。鑄鐵(tie)平(ping)(ping)板(ban)(ban)的(de)(de)平(ping)(ping)整性反映了(le)鑄鐵(tie)平(ping)(ping)板(ban)(ban)局(ju)(ju)部(bu)誤差(cha)鑄鐵(tie)平(ping)(ping)板(ban)(ban)的(de)(de)局(ju)(ju)部(bu)誤差(cha)是(shi)指鑄鐵(tie)平(ping)(ping)板(ban)(ban)工(gong)作面(mian)局(ju)(ju)部(bu)平(ping)(ping)面(mian)度加(jia)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)型(xing)(xing)造(zao)芯都實現了(le)機(ji)(ji)械(xie)化或自(zi)動化。常(chang)用(yong)的砂型(xing)(xing)造(zao)型(xing)(xing)造(zao)芯設備(bei)有高、中、低壓(ya)造(zao)型(xing)(xing)機(ji)(ji)、拋砂機(ji)(ji)、無箱射壓(ya)造(zao)型(xing)(xing)機(ji)(ji)、射芯機(ji)(ji)、冷和熱芯盒機(ji)(ji)等(deng)。
叉車配重鐵(tie)(tie)工藝可(ke)分為(wei)(wei)三(san)個基(ji)本部分,即配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)金(jin)(jin)屬(shu)(shu)準備、鑄型準備和鑄件處理。 配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)金(jin)(jin)屬(shu)(shu)是(shi)指配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)生產中用于澆注鑄件的(de)(de)金(jin)(jin)屬(shu)(shu)材料(liao)(liao),它是(shi)以一(yi)種金(jin)(jin)屬(shu)(shu)元(yuan)素為(wei)(wei)主(zhu)要(yao)成(cheng)分,并加入(ru)其他金(jin)(jin)屬(shu)(shu)或非(fei)金(jin)(jin)屬(shu)(shu)元(yuan)素而組成(cheng)的(de)(de)合金(jin)(jin),習慣上稱(cheng)為(wei)(wei)配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)合金(jin)(jin),主(zhu)要(yao)有鑄鐵(tie)(tie)、鑄鋼(gang)和配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)有色合金(jin)(jin)。叉車配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)按(an)造型材料(liao)(liao)的(de)(de)不同,又(you)可(ke)分為(wei)(wei)兩大(da)類:一(yi)類以天然(ran)礦產砂石(shi)作為(wei)(wei)主(zhu)要(yao)造型材料(liao)(liao),如(ru)熔模配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)、殼(ke)型配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)、負壓配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)、泥(ni)型配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)、實型配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)、陶(tao)瓷型配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)等(deng);一(yi)類以金(jin)(jin)屬(shu)(shu)作為(wei)(wei)主(zhu)要(yao)鑄型材料(liao)(liao),如(ru)金(jin)(jin)屬(shu)(shu)型配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)、離心配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)、連(lian)續(xu)配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)、叉車配(pei)(pei)(pei)(pei)(pei)件鐵(tie)(tie)、低(di)壓配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)等(deng)。
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