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鑄鐵配重塊是(shi)用于增加自(zi)身重量來保持(chi)平衡的重物,是(shi)將(jiang)噴(pen)丸機熔煉成符(fu)合 要求(qiu)的液(ye)體并澆進鑄型里,經(jing)冷卻凝(ning)固、清整處理后得(de)到有預定形狀、尺寸(cun)和性能的鑄件的工藝過程。現代機械制造工業的基礎工藝之一。
工(gong)作(zuo)面(mian)(mian)小范(fan)圍內(nei)的局(ju)部(bu)變化(hua)是(shi)指加工(gong)表面(mian)(mian)不(bu)平(ping)整(zheng),有(you)變形,灰口鐵(tie)可以看作(zuo)是(shi)鋼的基體與片狀石(shi)墨的夾(jia)雜。因此石(shi)墨片越少,越細,為了(le)保證(zheng)鑄(zhu)鐵(tie)在澆鑄(zhu)能夠得到灰口,且不(bu)至于得到過多和粗大的石(shi)墨片,這里(li)所說的工(gong)作(zuo)面(mian)(mian)小范(fan)圍,對(dui)小鑄(zhu)鐵(tie)平(ping)板(ban)而(er)言是(shi)局(ju)部(bu)位置,對(dui)大鑄(zhu)鐵(tie)平(ping)板(ban)而(er)言是(shi)局(ju)部(bu)面(mian)(mian)積。鑄(zhu)鐵(tie)平(ping)板(ban)的平(ping)整(zheng)性(xing)反映了(le)鑄(zhu)鐵(tie)平(ping)板(ban)局(ju)部(bu)誤差鑄(zhu)鐵(tie)平(ping)板(ban)的局(ju)部(bu)誤差是(shi)指鑄(zhu)鐵(tie)平(ping)板(ban)工(gong)作(zuo)面(mian)(mian)局(ju)部(bu)平(ping)面(mian)(mian)度(du)(du)加工(gong)質量,即表面(mian)(mian)粗糙度(du)(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,造型(xing)(xing)造芯都實現了機械化或(huo)自(zi)動化。常用的砂(sha)(sha)型(xing)(xing)造型(xing)(xing)造芯設備有高、中、低壓造型(xing)(xing)機、拋砂(sha)(sha)機、無(wu)箱射(she)壓造型(xing)(xing)機、射(she)芯機、冷和熱(re)芯盒機等。
叉車配重鐵(tie)工藝可分(fen)為三個基(ji)本(ben)部分(fen),即配(pei)重(zhong)(zhong)(zhong)鐵(tie)金(jin)屬(shu)準(zhun)備、鑄(zhu)(zhu)型(xing)(xing)準(zhun)備和鑄(zhu)(zhu)件(jian)處(chu)理。 配(pei)重(zhong)(zhong)(zhong)鐵(tie)金(jin)屬(shu)是(shi)指配(pei)重(zhong)(zhong)(zhong)鐵(tie)生產(chan)中用于澆(jiao)注鑄(zhu)(zhu)件(jian)的金(jin)屬(shu)材(cai)料(liao)(liao),它是(shi)以一種(zhong)金(jin)屬(shu)元(yuan)素(su)為主(zhu)要(yao)成分(fen),并加入其他金(jin)屬(shu)或非金(jin)屬(shu)元(yuan)素(su)而組成的合金(jin),習慣上稱為配(pei)重(zhong)(zhong)(zhong)鐵(tie)合金(jin),主(zhu)要(yao)有鑄(zhu)(zhu)鐵(tie)、鑄(zhu)(zhu)鋼和配(pei)重(zhong)(zhong)(zhong)鐵(tie)有色合金(jin)。叉車(che)(che)配(pei)重(zhong)(zhong)(zhong)鐵(tie)按造型(xing)(xing)材(cai)料(liao)(liao)的不同,又(you)可分(fen)為兩大(da)類:一類以天然礦產(chan)砂石作為主(zhu)要(yao)造型(xing)(xing)材(cai)料(liao)(liao),如熔模配(pei)重(zhong)(zhong)(zhong)鐵(tie)、殼型(xing)(xing)配(pei)重(zhong)(zhong)(zhong)鐵(tie)、負(fu)壓配(pei)重(zhong)(zhong)(zhong)鐵(tie)、泥型(xing)(xing)配(pei)重(zhong)(zhong)(zhong)鐵(tie)、實型(xing)(xing)配(pei)重(zhong)(zhong)(zhong)鐵(tie)、陶瓷型(xing)(xing)配(pei)重(zhong)(zhong)(zhong)鐵(tie)等;一類以金(jin)屬(shu)作為主(zhu)要(yao)鑄(zhu)(zhu)型(xing)(xing)材(cai)料(liao)(liao),如金(jin)屬(shu)型(xing)(xing)配(pei)重(zhong)(zhong)(zhong)鐵(tie)、離心(xin)配(pei)重(zhong)(zhong)(zhong)鐵(tie)、連續(xu)配(pei)重(zhong)(zhong)(zhong)鐵(tie)、叉車(che)(che)配(pei)件(jian)鐵(tie)、低壓配(pei)重(zhong)(zhong)(zhong)鐵(tie)等。
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