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鑄鐵配重塊是用于增加(jia)自(zi)身重量(liang)來保持(chi)平(ping)衡的(de)重物,是將噴丸(wan)機熔煉成符合 要求的(de)液體(ti)并澆(jiao)進鑄型里,經冷(leng)卻凝固、清整處理后得到有(you)預定形(xing)狀(zhuang)、尺寸和性能的(de)鑄件(jian)的(de)工(gong)(gong)藝過(guo)程(cheng)。現(xian)代機械制(zhi)造工(gong)(gong)業(ye)的(de)基礎工(gong)(gong)藝之一。
工(gong)作面(mian)小范圍內(nei)的(de)局(ju)部(bu)變化是(shi)指(zhi)加工(gong)表面(mian)不平(ping)(ping)整(zheng),有變形,灰口(kou)鐵可以(yi)看作是(shi)鋼(gang)的(de)基(ji)體(ti)與(yu)片(pian)狀(zhuang)石(shi)墨的(de)夾雜。因此石(shi)墨片(pian)越少,越細,為了保證鑄(zhu)鐵在澆(jiao)鑄(zhu)能夠得到灰口(kou),且不至(zhi)于(yu)得到過多和粗大的(de)石(shi)墨片(pian),這里所說的(de)工(gong)作面(mian)小范圍,對小鑄(zhu)鐵平(ping)(ping)板(ban)而(er)言(yan)是(shi)局(ju)部(bu)位置,對大鑄(zhu)鐵平(ping)(ping)板(ban)而(er)言(yan)是(shi)局(ju)部(bu)面(mian)積。鑄(zhu)鐵平(ping)(ping)板(ban)的(de)平(ping)(ping)整(zheng)性反映了鑄(zhu)鐵平(ping)(ping)板(ban)局(ju)部(bu)誤差鑄(zhu)鐵平(ping)(ping)板(ban)的(de)局(ju)部(bu)誤差是(shi)指(zhi)鑄(zhu)鐵平(ping)(ping)板(ban)工(gong)作面(mian)局(ju)部(bu)平(ping)(ping)面(mian)度(du)加工(gong)質(zhi)量,即(ji)表面(mian)粗糙度(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(che)間(jian)里,造型(xing)造芯(xin)都實現了機(ji)械化或自動(dong)化。常用的砂(sha)型(xing)造型(xing)造芯(xin)設(she)備有高、中、低壓造型(xing)機(ji)、拋砂(sha)機(ji)、無(wu)箱射壓造型(xing)機(ji)、射芯(xin)機(ji)、冷和熱芯(xin)盒(he)機(ji)等。
叉車配重鐵(tie)(tie)工藝可分為(wei)(wei)三個(ge)基本(ben)部(bu)分,即配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)金(jin)(jin)屬準備、鑄(zhu)(zhu)(zhu)(zhu)型(xing)(xing)(xing)準備和鑄(zhu)(zhu)(zhu)(zhu)件處(chu)理(li)。 配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)金(jin)(jin)屬是指(zhi)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)生產(chan)中(zhong)用于澆注鑄(zhu)(zhu)(zhu)(zhu)件的(de)(de)金(jin)(jin)屬材料,它是以一種金(jin)(jin)屬元素(su)為(wei)(wei)主(zhu)(zhu)要(yao)成分,并加(jia)入其(qi)他金(jin)(jin)屬或非金(jin)(jin)屬元素(su)而組成的(de)(de)合金(jin)(jin),習慣上稱為(wei)(wei)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)合金(jin)(jin),主(zhu)(zhu)要(yao)有鑄(zhu)(zhu)(zhu)(zhu)鐵(tie)(tie)、鑄(zhu)(zhu)(zhu)(zhu)鋼和配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)有色合金(jin)(jin)。叉車(che)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)按造(zao)型(xing)(xing)(xing)材料的(de)(de)不同,又可分為(wei)(wei)兩(liang)大類(lei):一類(lei)以天(tian)然礦產(chan)砂石(shi)作為(wei)(wei)主(zhu)(zhu)要(yao)造(zao)型(xing)(xing)(xing)材料,如熔模配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)、殼型(xing)(xing)(xing)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)、負壓配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)、泥(ni)型(xing)(xing)(xing)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)、實型(xing)(xing)(xing)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)、陶瓷型(xing)(xing)(xing)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)等;一類(lei)以金(jin)(jin)屬作為(wei)(wei)主(zhu)(zhu)要(yao)鑄(zhu)(zhu)(zhu)(zhu)型(xing)(xing)(xing)材料,如金(jin)(jin)屬型(xing)(xing)(xing)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)、離(li)心配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)、連續(xu)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)、叉車(che)配(pei)(pei)(pei)件鐵(tie)(tie)、低(di)壓配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)等。
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