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鑄鐵配重塊是用于(yu)增加自身重(zhong)量來(lai)保持(chi)平(ping)衡(heng)的(de)重(zhong)物(wu),是將(jiang)噴(pen)丸機熔煉成符合 要求的(de)液體并(bing)澆進鑄(zhu)(zhu)型里(li),經冷卻凝固、清整處理后(hou)得到(dao)有預(yu)定形狀、尺寸(cun)和性能的(de)鑄(zhu)(zhu)件的(de)工藝(yi)(yi)過程。現代機械制造工業(ye)的(de)基礎(chu)工藝(yi)(yi)之一。
工(gong)(gong)作面(mian)小(xiao)(xiao)范圍(wei)內的(de)局(ju)部(bu)變化是(shi)指加工(gong)(gong)表面(mian)不平(ping)(ping)(ping)整(zheng),有變形(xing),灰(hui)口鐵(tie)可以看作是(shi)鋼的(de)基體(ti)與(yu)片狀石墨(mo)(mo)的(de)夾雜。因此石墨(mo)(mo)片越少,越細,為了保(bao)證(zheng)鑄(zhu)(zhu)鐵(tie)在(zai)澆鑄(zhu)(zhu)能夠得到(dao)(dao)灰(hui)口,且不至于(yu)得到(dao)(dao)過多和(he)粗大(da)(da)的(de)石墨(mo)(mo)片,這(zhe)里所說的(de)工(gong)(gong)作面(mian)小(xiao)(xiao)范圍(wei),對(dui)小(xiao)(xiao)鑄(zhu)(zhu)鐵(tie)平(ping)(ping)(ping)板(ban)(ban)而言是(shi)局(ju)部(bu)位置,對(dui)大(da)(da)鑄(zhu)(zhu)鐵(tie)平(ping)(ping)(ping)板(ban)(ban)而言是(shi)局(ju)部(bu)面(mian)積。鑄(zhu)(zhu)鐵(tie)平(ping)(ping)(ping)板(ban)(ban)的(de)平(ping)(ping)(ping)整(zheng)性反映了鑄(zhu)(zhu)鐵(tie)平(ping)(ping)(ping)板(ban)(ban)局(ju)部(bu)誤差鑄(zhu)(zhu)鐵(tie)平(ping)(ping)(ping)板(ban)(ban)的(de)局(ju)部(bu)誤差是(shi)指鑄(zhu)(zhu)鐵(tie)平(ping)(ping)(ping)板(ban)(ban)工(gong)(gong)作面(mian)局(ju)部(bu)平(ping)(ping)(ping)面(mian)度加工(gong)(gong)質量,即表面(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(li),造(zao)(zao)型(xing)(xing)造(zao)(zao)芯(xin)都實現了(le)機械化或自動化。常用的砂型(xing)(xing)造(zao)(zao)型(xing)(xing)造(zao)(zao)芯(xin)設備有高、中(zhong)、低壓造(zao)(zao)型(xing)(xing)機、拋砂機、無箱(xiang)射壓造(zao)(zao)型(xing)(xing)機、射芯(xin)機、冷和熱芯(xin)盒機等。
叉車配重鐵(tie)(tie)(tie)工藝(yi)可(ke)分(fen)為三個基本部分(fen),即配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)金(jin)屬(shu)(shu)(shu)準備、鑄(zhu)型(xing)準備和鑄(zhu)件(jian)處理。 配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)金(jin)屬(shu)(shu)(shu)是(shi)指配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)生產中用于澆注鑄(zhu)件(jian)的金(jin)屬(shu)(shu)(shu)材(cai)料(liao),它是(shi)以(yi)一種金(jin)屬(shu)(shu)(shu)元素為主要(yao)(yao)成分(fen),并加入(ru)其他金(jin)屬(shu)(shu)(shu)或非金(jin)屬(shu)(shu)(shu)元素而組成的合(he)(he)金(jin),習慣上稱為配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)合(he)(he)金(jin),主要(yao)(yao)有鑄(zhu)鐵(tie)(tie)(tie)、鑄(zhu)鋼和配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)有色(se)合(he)(he)金(jin)。叉車配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)按造(zao)型(xing)材(cai)料(liao)的不同,又(you)可(ke)分(fen)為兩大類(lei):一類(lei)以(yi)天(tian)然礦產砂石作為主要(yao)(yao)造(zao)型(xing)材(cai)料(liao),如熔模配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)、殼型(xing)配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)、負(fu)壓配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)、泥型(xing)配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)、實型(xing)配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)、陶瓷型(xing)配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)等;一類(lei)以(yi)金(jin)屬(shu)(shu)(shu)作為主要(yao)(yao)鑄(zhu)型(xing)材(cai)料(liao),如金(jin)屬(shu)(shu)(shu)型(xing)配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)、離心配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)、連續配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)、叉車配(pei)(pei)(pei)(pei)(pei)件(jian)鐵(tie)(tie)(tie)、低壓配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)等。
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