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鑄鐵配重塊是用于增加(jia)自身重量(liang)來保持(chi)平衡的(de)重物,是將噴丸(wan)機(ji)熔煉(lian)成符合 要求的(de)液體并澆進鑄型里,經冷卻凝固(gu)、清整處理后得到有預定形(xing)狀、尺寸(cun)和性(xing)能的(de)鑄件(jian)的(de)工(gong)(gong)藝(yi)過程。現代機(ji)械制造工(gong)(gong)業的(de)基礎工(gong)(gong)藝(yi)之一。
工(gong)(gong)作面(mian)小范(fan)圍內的局(ju)部(bu)(bu)變化是(shi)指加(jia)工(gong)(gong)表面(mian)不平(ping)整,有變形,灰(hui)口鐵可以(yi)看作是(shi)鋼的基體(ti)與片狀石墨的夾雜(za)。因此石墨片越少(shao),越細,為了保證(zheng)鑄鐵在澆鑄能夠得(de)到灰(hui)口,且(qie)不至于得(de)到過多和(he)粗(cu)大的石墨片,這里所說的工(gong)(gong)作面(mian)小范(fan)圍,對小鑄鐵平(ping)板(ban)而言是(shi)局(ju)部(bu)(bu)位置,對大鑄鐵平(ping)板(ban)而言是(shi)局(ju)部(bu)(bu)面(mian)積。鑄鐵平(ping)板(ban)的平(ping)整性(xing)反映(ying)了鑄鐵平(ping)板(ban)局(ju)部(bu)(bu)誤差鑄鐵平(ping)板(ban)的局(ju)部(bu)(bu)誤差是(shi)指鑄鐵平(ping)板(ban)工(gong)(gong)作面(mian)局(ju)部(bu)(bu)平(ping)面(mian)度加(jia)工(gong)(gong)質量,即表面(mian)粗(cu)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(che)間里,造(zao)型(xing)造(zao)芯都實現了機(ji)(ji)(ji)械化或自動(dong)化。常用的砂型(xing)造(zao)型(xing)造(zao)芯設備有高、中、低壓(ya)(ya)造(zao)型(xing)機(ji)(ji)(ji)、拋砂機(ji)(ji)(ji)、無箱射壓(ya)(ya)造(zao)型(xing)機(ji)(ji)(ji)、射芯機(ji)(ji)(ji)、冷(leng)和(he)熱芯盒(he)機(ji)(ji)(ji)等。
叉車配重鐵(tie)工(gong)藝可分為(wei)三個基本部分,即配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)金(jin)屬準備(bei)、鑄型(xing)(xing)準備(bei)和(he)鑄件處(chu)理。 配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)金(jin)屬是指配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)生產(chan)中用(yong)于(yu)澆注鑄件的金(jin)屬材(cai)料(liao),它是以一(yi)種金(jin)屬元素為(wei)主(zhu)要成分,并(bing)加(jia)入其他金(jin)屬或非金(jin)屬元素而(er)組成的合金(jin),習慣上稱為(wei)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)合金(jin),主(zhu)要有(you)(you)鑄鐵(tie)、鑄鋼和(he)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)有(you)(you)色合金(jin)。叉(cha)車(che)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)按造型(xing)(xing)材(cai)料(liao)的不同,又可分為(wei)兩大類(lei):一(yi)類(lei)以天然礦(kuang)產(chan)砂(sha)石作(zuo)為(wei)主(zhu)要造型(xing)(xing)材(cai)料(liao),如熔模配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)、殼型(xing)(xing)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)、負壓配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)、泥型(xing)(xing)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)、實型(xing)(xing)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)、陶瓷型(xing)(xing)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)等;一(yi)類(lei)以金(jin)屬作(zuo)為(wei)主(zhu)要鑄型(xing)(xing)材(cai)料(liao),如金(jin)屬型(xing)(xing)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)、離(li)心(xin)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)、連續配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)、叉(cha)車(che)配(pei)(pei)(pei)件鐵(tie)、低壓配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)等。
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