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鑄鐵配重塊是(shi)用于(yu)增加(jia)自身重(zhong)量來(lai)保持平衡(heng)的重(zhong)物,是(shi)將(jiang)噴丸機(ji)熔煉成符合 要求的液體并(bing)澆進鑄(zhu)(zhu)型里,經冷卻凝固、清整處理后得(de)到有預定形狀(zhuang)、尺寸和(he)性(xing)能(neng)的鑄(zhu)(zhu)件的工(gong)藝(yi)過程。現代機(ji)械制(zhi)造工(gong)業的基礎工(gong)藝(yi)之(zhi)一。
工(gong)作(zuo)面(mian)小(xiao)范圍內(nei)的(de)局(ju)部(bu)變化是指加(jia)工(gong)表(biao)(biao)面(mian)不(bu)平(ping)(ping)(ping)整,有變形,灰口鐵(tie)可以看作(zuo)是鋼的(de)基(ji)體與片狀石(shi)(shi)墨(mo)的(de)夾雜。因此石(shi)(shi)墨(mo)片越少,越細,為了保(bao)證鑄鐵(tie)在澆鑄能夠得(de)到灰口,且(qie)不(bu)至于得(de)到過(guo)多和粗大(da)的(de)石(shi)(shi)墨(mo)片,這(zhe)里所說的(de)工(gong)作(zuo)面(mian)小(xiao)范圍,對(dui)小(xiao)鑄鐵(tie)平(ping)(ping)(ping)板而言是局(ju)部(bu)位置,對(dui)大(da)鑄鐵(tie)平(ping)(ping)(ping)板而言是局(ju)部(bu)面(mian)積(ji)。鑄鐵(tie)平(ping)(ping)(ping)板的(de)平(ping)(ping)(ping)整性反(fan)映了鑄鐵(tie)平(ping)(ping)(ping)板局(ju)部(bu)誤差(cha)鑄鐵(tie)平(ping)(ping)(ping)板的(de)局(ju)部(bu)誤差(cha)是指鑄鐵(tie)平(ping)(ping)(ping)板工(gong)作(zuo)面(mian)局(ju)部(bu)平(ping)(ping)(ping)面(mian)度(du)加(jia)工(gong)質量(liang),即(ji)表(biao)(biao)面(mian)粗糙(cao)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(li),造(zao)(zao)型造(zao)(zao)芯(xin)都實現了機(ji)械化(hua)或自動化(hua)。常用的砂型造(zao)(zao)型造(zao)(zao)芯(xin)設(she)備(bei)有高(gao)、中、低壓(ya)造(zao)(zao)型機(ji)、拋砂機(ji)、無箱(xiang)射壓(ya)造(zao)(zao)型機(ji)、射芯(xin)機(ji)、冷和熱芯(xin)盒機(ji)等。
叉車配重鐵(tie)(tie)(tie)工(gong)藝可(ke)分為三個基本部分,即配(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)金(jin)(jin)(jin)(jin)(jin)屬準(zhun)備、鑄型準(zhun)備和鑄件處理。 配(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)金(jin)(jin)(jin)(jin)(jin)屬是指配(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)生產中(zhong)用于(yu)澆注鑄件的金(jin)(jin)(jin)(jin)(jin)屬材料(liao),它是以一種金(jin)(jin)(jin)(jin)(jin)屬元素(su)為主(zhu)要(yao)成(cheng)分,并加入其他金(jin)(jin)(jin)(jin)(jin)屬或非(fei)金(jin)(jin)(jin)(jin)(jin)屬元素(su)而組成(cheng)的合金(jin)(jin)(jin)(jin)(jin),習慣上稱為配(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)合金(jin)(jin)(jin)(jin)(jin),主(zhu)要(yao)有鑄鐵(tie)(tie)(tie)、鑄鋼和配(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)有色合金(jin)(jin)(jin)(jin)(jin)。叉車配(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)按造(zao)型材料(liao)的不(bu)同(tong),又可(ke)分為兩大(da)類:一類以天然礦產砂石作為主(zhu)要(yao)造(zao)型材料(liao),如(ru)熔模配(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)、殼型配(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)、負壓配(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)、泥型配(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)、實型配(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)、陶瓷型配(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)等(deng);一類以金(jin)(jin)(jin)(jin)(jin)屬作為主(zhu)要(yao)鑄型材料(liao),如(ru)金(jin)(jin)(jin)(jin)(jin)屬型配(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)、離心(xin)配(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)、連(lian)續(xu)配(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)、叉車配(pei)件鐵(tie)(tie)(tie)、低壓配(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)等(deng)。
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