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鑄鐵配重塊是用于增(zeng)加(jia)自身重(zhong)量來(lai)保(bao)持平衡的(de)(de)重(zhong)物(wu),是將(jiang)噴丸(wan)機熔煉成符(fu)合(he) 要求的(de)(de)液體并澆進(jin)鑄型里,經冷卻凝固(gu)、清整處理后得到有預定形狀、尺寸(cun)和性能的(de)(de)鑄件的(de)(de)工(gong)(gong)藝過(guo)程。現代(dai)機械制造工(gong)(gong)業的(de)(de)基礎工(gong)(gong)藝之一。
工作(zuo)(zuo)面(mian)小(xiao)范圍(wei)(wei)內的(de)(de)局(ju)部(bu)變化(hua)是(shi)(shi)(shi)指加(jia)工表面(mian)不(bu)平(ping)(ping)整,有變形,灰(hui)口鐵(tie)可(ke)以看作(zuo)(zuo)是(shi)(shi)(shi)鋼的(de)(de)基體與片(pian)狀石墨(mo)的(de)(de)夾雜(za)。因(yin)此(ci)石墨(mo)片(pian)越少,越細,為了(le)(le)保證鑄(zhu)鐵(tie)在澆鑄(zhu)能夠(gou)得到灰(hui)口,且不(bu)至于(yu)得到過多和粗大的(de)(de)石墨(mo)片(pian),這里所說(shuo)的(de)(de)工作(zuo)(zuo)面(mian)小(xiao)范圍(wei)(wei),對小(xiao)鑄(zhu)鐵(tie)平(ping)(ping)板(ban)(ban)而言是(shi)(shi)(shi)局(ju)部(bu)位置,對大鑄(zhu)鐵(tie)平(ping)(ping)板(ban)(ban)而言是(shi)(shi)(shi)局(ju)部(bu)面(mian)積。鑄(zhu)鐵(tie)平(ping)(ping)板(ban)(ban)的(de)(de)平(ping)(ping)整性反映了(le)(le)鑄(zhu)鐵(tie)平(ping)(ping)板(ban)(ban)局(ju)部(bu)誤差鑄(zhu)鐵(tie)平(ping)(ping)板(ban)(ban)的(de)(de)局(ju)部(bu)誤差是(shi)(shi)(shi)指鑄(zhu)鐵(tie)平(ping)(ping)板(ban)(ban)工作(zuo)(zuo)面(mian)局(ju)部(bu)平(ping)(ping)面(mian)度加(jia)工質量,即表面(mian)粗糙(cao)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(li),造(zao)型(xing)造(zao)芯(xin)都實現了機械化或自動(dong)化。常用(yong)的砂型(xing)造(zao)型(xing)造(zao)芯(xin)設備(bei)有(you)高、中、低壓造(zao)型(xing)機、拋砂機、無箱射(she)壓造(zao)型(xing)機、射(she)芯(xin)機、冷和(he)熱芯(xin)盒機等。
叉車配重鐵(tie)(tie)工藝可(ke)分(fen)(fen)為(wei)(wei)(wei)三個(ge)基本部分(fen)(fen),即配(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)金(jin)(jin)(jin)(jin)屬(shu)準(zhun)備、鑄(zhu)型(xing)(xing)準(zhun)備和鑄(zhu)件(jian)處理。 配(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)金(jin)(jin)(jin)(jin)屬(shu)是(shi)指配(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)生產(chan)中用于澆注鑄(zhu)件(jian)的金(jin)(jin)(jin)(jin)屬(shu)材(cai)(cai)料(liao),它是(shi)以(yi)一(yi)種金(jin)(jin)(jin)(jin)屬(shu)元(yuan)素為(wei)(wei)(wei)主(zhu)要成(cheng)分(fen)(fen),并加入(ru)其(qi)他(ta)金(jin)(jin)(jin)(jin)屬(shu)或非金(jin)(jin)(jin)(jin)屬(shu)元(yuan)素而組成(cheng)的合金(jin)(jin)(jin)(jin),習慣上稱為(wei)(wei)(wei)配(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)合金(jin)(jin)(jin)(jin),主(zhu)要有(you)鑄(zhu)鐵(tie)(tie)、鑄(zhu)鋼和配(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)有(you)色合金(jin)(jin)(jin)(jin)。叉(cha)車配(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)按造型(xing)(xing)材(cai)(cai)料(liao)的不(bu)同,又可(ke)分(fen)(fen)為(wei)(wei)(wei)兩大(da)類:一(yi)類以(yi)天(tian)然礦產(chan)砂石(shi)作為(wei)(wei)(wei)主(zhu)要造型(xing)(xing)材(cai)(cai)料(liao),如熔模(mo)配(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)、殼型(xing)(xing)配(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)、負壓(ya)(ya)配(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)、泥型(xing)(xing)配(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)、實型(xing)(xing)配(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)、陶(tao)瓷型(xing)(xing)配(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)等;一(yi)類以(yi)金(jin)(jin)(jin)(jin)屬(shu)作為(wei)(wei)(wei)主(zhu)要鑄(zhu)型(xing)(xing)材(cai)(cai)料(liao),如金(jin)(jin)(jin)(jin)屬(shu)型(xing)(xing)配(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)、離(li)心配(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)、連續配(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)、叉(cha)車配(pei)(pei)件(jian)鐵(tie)(tie)、低壓(ya)(ya)配(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)等。
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