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鑄鐵配重塊是用(yong)于增(zeng)加自身重(zhong)量(liang)來(lai)保持平衡的重(zhong)物,是將噴丸機熔煉成符合 要求的液體并澆進鑄(zhu)型里(li),經(jing)冷卻凝固、清整處理后得(de)到有預定形狀、尺寸(cun)和性能的鑄(zhu)件的工(gong)藝過(guo)程。現代機械(xie)制造工(gong)業的基礎工(gong)藝之一。
工(gong)(gong)作(zuo)面(mian)(mian)小范(fan)圍內的(de)局(ju)部(bu)變化(hua)是指加工(gong)(gong)表面(mian)(mian)不平(ping)(ping)整(zheng),有變形(xing),灰口(kou)鐵(tie)(tie)(tie)(tie)可以(yi)看(kan)作(zuo)是鋼(gang)的(de)基(ji)體與片(pian)狀石墨(mo)(mo)(mo)的(de)夾雜(za)。因此(ci)石墨(mo)(mo)(mo)片(pian)越少,越細,為了保證鑄鐵(tie)(tie)(tie)(tie)在澆鑄能夠得到(dao)灰口(kou),且不至于得到(dao)過多和粗(cu)大(da)的(de)石墨(mo)(mo)(mo)片(pian),這里所說的(de)工(gong)(gong)作(zuo)面(mian)(mian)小范(fan)圍,對小鑄鐵(tie)(tie)(tie)(tie)平(ping)(ping)板而(er)言(yan)(yan)是局(ju)部(bu)位置(zhi),對大(da)鑄鐵(tie)(tie)(tie)(tie)平(ping)(ping)板而(er)言(yan)(yan)是局(ju)部(bu)面(mian)(mian)積(ji)。鑄鐵(tie)(tie)(tie)(tie)平(ping)(ping)板的(de)平(ping)(ping)整(zheng)性反(fan)映了鑄鐵(tie)(tie)(tie)(tie)平(ping)(ping)板局(ju)部(bu)誤差鑄鐵(tie)(tie)(tie)(tie)平(ping)(ping)板的(de)局(ju)部(bu)誤差是指鑄鐵(tie)(tie)(tie)(tie)平(ping)(ping)板工(gong)(gong)作(zuo)面(mian)(mian)局(ju)部(bu)平(ping)(ping)面(mian)(mian)度加工(gong)(gong)質量,即表面(mian)(mian)粗(cu)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)(zao)(zao)(zao)型造(zao)(zao)(zao)(zao)芯都實現(xian)了機(ji)械化或自動化。常用的砂型造(zao)(zao)(zao)(zao)型造(zao)(zao)(zao)(zao)芯設(she)備有高、中、低(di)壓造(zao)(zao)(zao)(zao)型機(ji)、拋砂機(ji)、無(wu)箱射壓造(zao)(zao)(zao)(zao)型機(ji)、射芯機(ji)、冷和(he)熱芯盒(he)機(ji)等。
叉車配重鐵工藝可分(fen)(fen)為(wei)三個基本部分(fen)(fen),即(ji)配(pei)(pei)(pei)重(zhong)(zhong)鐵金(jin)(jin)(jin)屬(shu)準備(bei)、鑄(zhu)(zhu)型(xing)(xing)(xing)準備(bei)和鑄(zhu)(zhu)件處理。 配(pei)(pei)(pei)重(zhong)(zhong)鐵金(jin)(jin)(jin)屬(shu)是指(zhi)配(pei)(pei)(pei)重(zhong)(zhong)鐵生產(chan)中用于澆注鑄(zhu)(zhu)件的金(jin)(jin)(jin)屬(shu)材(cai)(cai)料,它是以(yi)(yi)一種金(jin)(jin)(jin)屬(shu)元素為(wei)主(zhu)要成分(fen)(fen),并加入其他金(jin)(jin)(jin)屬(shu)或(huo)非金(jin)(jin)(jin)屬(shu)元素而(er)組成的合(he)金(jin)(jin)(jin),習(xi)慣上稱為(wei)配(pei)(pei)(pei)重(zhong)(zhong)鐵合(he)金(jin)(jin)(jin),主(zhu)要有鑄(zhu)(zhu)鐵、鑄(zhu)(zhu)鋼和配(pei)(pei)(pei)重(zhong)(zhong)鐵有色合(he)金(jin)(jin)(jin)。叉(cha)車配(pei)(pei)(pei)重(zhong)(zhong)鐵按(an)造型(xing)(xing)(xing)材(cai)(cai)料的不同,又可分(fen)(fen)為(wei)兩大類(lei):一類(lei)以(yi)(yi)天然礦產(chan)砂石(shi)作(zuo)為(wei)主(zhu)要造型(xing)(xing)(xing)材(cai)(cai)料,如熔(rong)模配(pei)(pei)(pei)重(zhong)(zhong)鐵、殼型(xing)(xing)(xing)配(pei)(pei)(pei)重(zhong)(zhong)鐵、負壓配(pei)(pei)(pei)重(zhong)(zhong)鐵、泥型(xing)(xing)(xing)配(pei)(pei)(pei)重(zhong)(zhong)鐵、實型(xing)(xing)(xing)配(pei)(pei)(pei)重(zhong)(zhong)鐵、陶瓷(ci)型(xing)(xing)(xing)配(pei)(pei)(pei)重(zhong)(zhong)鐵等;一類(lei)以(yi)(yi)金(jin)(jin)(jin)屬(shu)作(zuo)為(wei)主(zhu)要鑄(zhu)(zhu)型(xing)(xing)(xing)材(cai)(cai)料,如金(jin)(jin)(jin)屬(shu)型(xing)(xing)(xing)配(pei)(pei)(pei)重(zhong)(zhong)鐵、離心配(pei)(pei)(pei)重(zhong)(zhong)鐵、連續配(pei)(pei)(pei)重(zhong)(zhong)鐵、叉(cha)車配(pei)(pei)(pei)件鐵、低壓配(pei)(pei)(pei)重(zhong)(zhong)鐵等。
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