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鑄鐵配重塊是用于增加自身(shen)重量(liang)來保持平衡的重物(wu),是將噴(pen)丸機(ji)熔煉(lian)成符合 要求的液(ye)體并澆進鑄(zhu)型里,經(jing)冷卻(que)凝(ning)固、清整處理后得到有預定(ding)形狀(zhuang)、尺(chi)寸和(he)性能(neng)的鑄(zhu)件(jian)的工(gong)(gong)藝過程。現(xian)代機(ji)械(xie)制(zhi)造工(gong)(gong)業的基(ji)礎工(gong)(gong)藝之一。
工(gong)作(zuo)面(mian)(mian)(mian)小范圍(wei)內的(de)(de)局(ju)部變化是(shi)(shi)指加工(gong)表面(mian)(mian)(mian)不平(ping)整,有變形,灰口(kou)鐵(tie)可以看作(zuo)是(shi)(shi)鋼的(de)(de)基體(ti)與片(pian)狀石(shi)墨(mo)的(de)(de)夾雜。因此石(shi)墨(mo)片(pian)越少(shao),越細,為了(le)保證鑄鐵(tie)在(zai)澆鑄能夠得(de)到灰口(kou),且(qie)不至于得(de)到過(guo)多和粗大的(de)(de)石(shi)墨(mo)片(pian),這里所說的(de)(de)工(gong)作(zuo)面(mian)(mian)(mian)小范圍(wei),對(dui)(dui)小鑄鐵(tie)平(ping)板(ban)(ban)而(er)言(yan)是(shi)(shi)局(ju)部位置,對(dui)(dui)大鑄鐵(tie)平(ping)板(ban)(ban)而(er)言(yan)是(shi)(shi)局(ju)部面(mian)(mian)(mian)積。鑄鐵(tie)平(ping)板(ban)(ban)的(de)(de)平(ping)整性(xing)反映了(le)鑄鐵(tie)平(ping)板(ban)(ban)局(ju)部誤(wu)差(cha)鑄鐵(tie)平(ping)板(ban)(ban)的(de)(de)局(ju)部誤(wu)差(cha)是(shi)(shi)指鑄鐵(tie)平(ping)板(ban)(ban)工(gong)作(zuo)面(mian)(mian)(mian)局(ju)部平(ping)面(mian)(mian)(mian)度(du)加工(gong)質量,即表面(mian)(mian)(mian)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間里,造(zao)型(xing)造(zao)芯(xin)都實現了(le)機械化或自動化。常用的砂型(xing)造(zao)型(xing)造(zao)芯(xin)設備有(you)高(gao)、中、低壓造(zao)型(xing)機、拋砂機、無箱(xiang)射壓造(zao)型(xing)機、射芯(xin)機、冷和熱芯(xin)盒機等。
叉車配重鐵(tie)(tie)(tie)(tie)工藝可分(fen)為(wei)三個基本(ben)部分(fen),即配(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(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)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)金(jin)(jin)屬(shu)(shu)(shu)是指配(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)生(sheng)產(chan)(chan)中用于澆注鑄件(jian)的(de)金(jin)(jin)屬(shu)(shu)(shu)材(cai)料(liao),它是以一(yi)種金(jin)(jin)屬(shu)(shu)(shu)元素為(wei)主(zhu)要(yao)成(cheng)分(fen),并(bing)加入(ru)其(qi)他(ta)金(jin)(jin)屬(shu)(shu)(shu)或非(fei)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)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)合(he)金(jin)(jin),主(zhu)要(yao)有鑄鐵(tie)(tie)(tie)(tie)、鑄鋼和配(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)有色合(he)金(jin)(jin)。叉(cha)車配(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)按(an)造型(xing)材(cai)料(liao)的(de)不同,又可分(fen)為(wei)兩大(da)類:一(yi)類以天(tian)然礦(kuang)產(chan)(chan)砂(sha)石作為(wei)主(zhu)要(yao)造型(xing)材(cai)料(liao),如熔模配(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)、殼型(xing)配(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)、負壓配(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)、泥型(xing)配(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)、實(shi)型(xing)配(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)、陶瓷(ci)型(xing)配(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)等(deng);一(yi)類以金(jin)(jin)屬(shu)(shu)(shu)作為(wei)主(zhu)要(yao)鑄型(xing)材(cai)料(liao),如金(jin)(jin)屬(shu)(shu)(shu)型(xing)配(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)、離心配(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)、連(lian)續配(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)、叉(cha)車配(pei)(pei)件(jian)鐵(tie)(tie)(tie)(tie)、低(di)壓配(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)等(deng)。
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