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鑄鐵配重塊是用于增加(jia)自身重量來保持平衡(heng)的(de)重物,是將噴(pen)丸機熔煉成符合 要求的(de)液體(ti)并澆進鑄型里,經冷卻凝固、清整(zheng)處理后得到有預定形狀、尺(chi)寸(cun)和(he)性(xing)能的(de)鑄件的(de)工(gong)藝過程。現(xian)代機械(xie)制造工(gong)業的(de)基(ji)礎(chu)工(gong)藝之一。
工(gong)作面小范圍內的(de)(de)局(ju)部(bu)(bu)變化是指加(jia)工(gong)表(biao)面不(bu)平(ping)(ping)整,有變形,灰(hui)口鐵(tie)可(ke)以(yi)看(kan)作是鋼(gang)的(de)(de)基體與(yu)片(pian)狀石(shi)墨的(de)(de)夾雜。因此石(shi)墨片(pian)越(yue)少(shao),越(yue)細,為了保證鑄(zhu)鐵(tie)在澆鑄(zhu)能夠得到(dao)灰(hui)口,且不(bu)至(zhi)于得到(dao)過多和粗大(da)的(de)(de)石(shi)墨片(pian),這里所說的(de)(de)工(gong)作面小范圍,對小鑄(zhu)鐵(tie)平(ping)(ping)板而言是局(ju)部(bu)(bu)位置(zhi),對大(da)鑄(zhu)鐵(tie)平(ping)(ping)板而言是局(ju)部(bu)(bu)面積。鑄(zhu)鐵(tie)平(ping)(ping)板的(de)(de)平(ping)(ping)整性反映(ying)了鑄(zhu)鐵(tie)平(ping)(ping)板局(ju)部(bu)(bu)誤(wu)差鑄(zhu)鐵(tie)平(ping)(ping)板的(de)(de)局(ju)部(bu)(bu)誤(wu)差是指鑄(zhu)鐵(tie)平(ping)(ping)板工(gong)作面局(ju)部(bu)(bu)平(ping)(ping)面度(du)加(jia)工(gong)質(zhi)量,即(ji)表(biao)面粗糙度(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(che)間里,造(zao)型(xing)(xing)造(zao)芯(xin)(xin)(xin)都實(shi)現了機(ji)械化或自動化。常用的砂型(xing)(xing)造(zao)型(xing)(xing)造(zao)芯(xin)(xin)(xin)設備有高(gao)、中、低(di)壓造(zao)型(xing)(xing)機(ji)、拋砂機(ji)、無(wu)箱射壓造(zao)型(xing)(xing)機(ji)、射芯(xin)(xin)(xin)機(ji)、冷和(he)熱芯(xin)(xin)(xin)盒機(ji)等。
叉車配重鐵(tie)(tie)工(gong)藝可(ke)(ke)分(fen)(fen)為(wei)三(san)個基本部(bu)分(fen)(fen),即配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)金(jin)(jin)屬(shu)(shu)(shu)準備、鑄型(xing)準備和鑄件(jian)處(chu)理。 配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)金(jin)(jin)屬(shu)(shu)(shu)是(shi)(shi)指(zhi)配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)生產(chan)中(zhong)用于澆注鑄件(jian)的(de)金(jin)(jin)屬(shu)(shu)(shu)材料(liao)(liao),它是(shi)(shi)以一種金(jin)(jin)屬(shu)(shu)(shu)元素為(wei)主(zhu)(zhu)要(yao)成(cheng)分(fen)(fen),并(bing)加入其他(ta)金(jin)(jin)屬(shu)(shu)(shu)或非金(jin)(jin)屬(shu)(shu)(shu)元素而組成(cheng)的(de)合(he)金(jin)(jin),習慣上稱為(wei)配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)合(he)金(jin)(jin),主(zhu)(zhu)要(yao)有鑄鐵(tie)(tie)、鑄鋼和配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)有色合(he)金(jin)(jin)。叉(cha)車配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)按(an)造(zao)(zao)型(xing)材料(liao)(liao)的(de)不同,又可(ke)(ke)分(fen)(fen)為(wei)兩大類:一類以天然(ran)礦產(chan)砂石作(zuo)為(wei)主(zhu)(zhu)要(yao)造(zao)(zao)型(xing)材料(liao)(liao),如熔模配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)、殼型(xing)配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)、負壓配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)、泥型(xing)配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)、實型(xing)配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)、陶(tao)瓷型(xing)配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)等(deng);一類以金(jin)(jin)屬(shu)(shu)(shu)作(zuo)為(wei)主(zhu)(zhu)要(yao)鑄型(xing)材料(liao)(liao),如金(jin)(jin)屬(shu)(shu)(shu)型(xing)配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)、離心配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)、連續配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)、叉(cha)車配(pei)(pei)(pei)(pei)件(jian)鐵(tie)(tie)、低壓配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)等(deng)。
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