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鑄鐵配重塊是(shi)用(yong)于(yu)增加自(zi)身(shen)重(zhong)量(liang)來保持平衡(heng)的(de)重(zhong)物(wu),是(shi)將噴(pen)丸(wan)機(ji)熔煉(lian)成符合(he) 要(yao)求的(de)液體并澆進鑄(zhu)型里,經冷卻(que)凝(ning)固、清(qing)整處理后得(de)到有預定形狀、尺寸和性(xing)能的(de)鑄(zhu)件的(de)工藝過程。現代(dai)機(ji)械制造工業的(de)基礎(chu)工藝之一。
工(gong)作面(mian)(mian)(mian)(mian)(mian)(mian)小(xiao)范圍內的局(ju)部(bu)變化是指加工(gong)表面(mian)(mian)(mian)(mian)(mian)(mian)不平(ping)(ping)整,有變形,灰口(kou)(kou)鐵(tie)可(ke)以(yi)看作是鋼的基體與片(pian)狀(zhuang)石(shi)(shi)墨(mo)的夾(jia)雜。因(yin)此石(shi)(shi)墨(mo)片(pian)越少(shao),越細(xi),為(wei)了保證鑄(zhu)鐵(tie)在(zai)澆鑄(zhu)能夠得(de)(de)到灰口(kou)(kou),且不至(zhi)于得(de)(de)到過(guo)多和粗大的石(shi)(shi)墨(mo)片(pian),這里所說(shuo)的工(gong)作面(mian)(mian)(mian)(mian)(mian)(mian)小(xiao)范圍,對(dui)小(xiao)鑄(zhu)鐵(tie)平(ping)(ping)板而(er)言是局(ju)部(bu)位置,對(dui)大鑄(zhu)鐵(tie)平(ping)(ping)板而(er)言是局(ju)部(bu)面(mian)(mian)(mian)(mian)(mian)(mian)積。鑄(zhu)鐵(tie)平(ping)(ping)板的平(ping)(ping)整性反映了鑄(zhu)鐵(tie)平(ping)(ping)板局(ju)部(bu)誤(wu)差鑄(zhu)鐵(tie)平(ping)(ping)板的局(ju)部(bu)誤(wu)差是指鑄(zhu)鐵(tie)平(ping)(ping)板工(gong)作面(mian)(mian)(mian)(mian)(mian)(mian)局(ju)部(bu)平(ping)(ping)面(mian)(mian)(mian)(mian)(mian)(mian)度加工(gong)質量,即表面(mian)(mian)(mian)(mian)(mian)(mian)粗糙度。
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)造(zao)芯(xin)(xin)都實現了機械化(hua)或自動化(hua)。常用的砂型(xing)造(zao)型(xing)造(zao)芯(xin)(xin)設備(bei)有高、中(zhong)、低壓造(zao)型(xing)機、拋砂機、無箱射壓造(zao)型(xing)機、射芯(xin)(xin)機、冷(leng)和熱芯(xin)(xin)盒機等(deng)。
叉車配重鐵(tie)(tie)(tie)(tie)(tie)工(gong)藝可分(fen)(fen)為(wei)三個基本(ben)部分(fen)(fen),即配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)金(jin)(jin)屬準備、鑄(zhu)型(xing)(xing)(xing)準備和(he)鑄(zhu)件(jian)處(chu)理。 配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)金(jin)(jin)屬是指配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)生產中(zhong)用于澆注鑄(zhu)件(jian)的金(jin)(jin)屬材料(liao),它是以一(yi)(yi)種(zhong)金(jin)(jin)屬元(yuan)素(su)為(wei)主(zhu)要(yao)成分(fen)(fen),并加(jia)入(ru)其他金(jin)(jin)屬或非金(jin)(jin)屬元(yuan)素(su)而組成的合(he)金(jin)(jin),習(xi)慣上稱(cheng)為(wei)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)合(he)金(jin)(jin),主(zhu)要(yao)有鑄(zhu)鐵(tie)(tie)(tie)(tie)(tie)、鑄(zhu)鋼和(he)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)有色合(he)金(jin)(jin)。叉車(che)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)按(an)造(zao)型(xing)(xing)(xing)材料(liao)的不同,又(you)可分(fen)(fen)為(wei)兩大類:一(yi)(yi)類以天然礦產砂石作(zuo)為(wei)主(zhu)要(yao)造(zao)型(xing)(xing)(xing)材料(liao),如熔(rong)模配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)、殼型(xing)(xing)(xing)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)、負壓配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)、泥型(xing)(xing)(xing)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)、實型(xing)(xing)(xing)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)、陶瓷型(xing)(xing)(xing)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)等;一(yi)(yi)類以金(jin)(jin)屬作(zuo)為(wei)主(zhu)要(yao)鑄(zhu)型(xing)(xing)(xing)材料(liao),如金(jin)(jin)屬型(xing)(xing)(xing)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)、離(li)心配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)、連續配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)、叉車(che)配(pei)(pei)(pei)件(jian)鐵(tie)(tie)(tie)(tie)(tie)、低壓配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)等。
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