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鑄鐵配重塊是(shi)用于(yu)增加自(zi)身重(zhong)量來(lai)保(bao)持平衡的重(zhong)物(wu),是(shi)將噴丸機(ji)熔煉(lian)成符(fu)合(he) 要(yao)求的液體并澆進鑄型里,經冷卻凝固、清(qing)整處理后(hou)得到有(you)預(yu)定形狀、尺寸和性能的鑄件的工(gong)藝過(guo)程(cheng)。現代機(ji)械制造(zao)工(gong)業的基礎工(gong)藝之(zhi)一。
工作(zuo)面(mian)(mian)小(xiao)范圍內的(de)局(ju)部(bu)(bu)變化(hua)是(shi)(shi)指(zhi)加(jia)工表面(mian)(mian)不平(ping)(ping)整,有變形,灰口(kou)鐵(tie)(tie)(tie)可以看作(zuo)是(shi)(shi)鋼的(de)基體(ti)與片狀石墨的(de)夾雜(za)。因(yin)此石墨片越(yue)(yue)少,越(yue)(yue)細(xi),為了保證(zheng)鑄(zhu)鐵(tie)(tie)(tie)在澆鑄(zhu)能(neng)夠(gou)得到(dao)灰口(kou),且不至于得到(dao)過多和粗大的(de)石墨片,這里所說的(de)工作(zuo)面(mian)(mian)小(xiao)范圍,對小(xiao)鑄(zhu)鐵(tie)(tie)(tie)平(ping)(ping)板(ban)(ban)而言是(shi)(shi)局(ju)部(bu)(bu)位(wei)置,對大鑄(zhu)鐵(tie)(tie)(tie)平(ping)(ping)板(ban)(ban)而言是(shi)(shi)局(ju)部(bu)(bu)面(mian)(mian)積(ji)。鑄(zhu)鐵(tie)(tie)(tie)平(ping)(ping)板(ban)(ban)的(de)平(ping)(ping)整性反映了鑄(zhu)鐵(tie)(tie)(tie)平(ping)(ping)板(ban)(ban)局(ju)部(bu)(bu)誤差鑄(zhu)鐵(tie)(tie)(tie)平(ping)(ping)板(ban)(ban)的(de)局(ju)部(bu)(bu)誤差是(shi)(shi)指(zhi)鑄(zhu)鐵(tie)(tie)(tie)平(ping)(ping)板(ban)(ban)工作(zuo)面(mian)(mian)局(ju)部(bu)(bu)平(ping)(ping)面(mian)(mian)度加(jia)工質量,即表面(mian)(mian)粗糙(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(che)間里,造(zao)型造(zao)芯(xin)都(dou)實現了機械化(hua)或(huo)自動化(hua)。常(chang)用的砂型造(zao)型造(zao)芯(xin)設備有高、中、低(di)壓(ya)(ya)造(zao)型機、拋砂機、無箱射壓(ya)(ya)造(zao)型機、射芯(xin)機、冷和熱芯(xin)盒機等。
叉車配重鐵(tie)(tie)(tie)(tie)(tie)工藝(yi)可分為(wei)三個基本部分,即配(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)金(jin)(jin)屬(shu)(shu)準備、鑄型(xing)(xing)準備和(he)鑄件(jian)處理。 配(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)金(jin)(jin)屬(shu)(shu)是(shi)指配(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)生(sheng)產中用于澆(jiao)注鑄件(jian)的(de)金(jin)(jin)屬(shu)(shu)材料,它(ta)是(shi)以一種(zhong)金(jin)(jin)屬(shu)(shu)元(yuan)素為(wei)主要(yao)成分,并加入其他金(jin)(jin)屬(shu)(shu)或非金(jin)(jin)屬(shu)(shu)元(yuan)素而組成的(de)合(he)金(jin)(jin),習慣(guan)上(shang)稱為(wei)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)合(he)金(jin)(jin),主要(yao)有鑄鐵(tie)(tie)(tie)(tie)(tie)、鑄鋼和(he)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)有色合(he)金(jin)(jin)。叉(cha)車(che)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)按造(zao)型(xing)(xing)材料的(de)不同(tong),又(you)可分為(wei)兩大類:一類以天然礦產砂(sha)石作(zuo)為(wei)主要(yao)造(zao)型(xing)(xing)材料,如熔模配(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)、殼型(xing)(xing)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)、負壓配(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)、泥型(xing)(xing)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)、實型(xing)(xing)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)、陶瓷型(xing)(xing)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)等;一類以金(jin)(jin)屬(shu)(shu)作(zuo)為(wei)主要(yao)鑄型(xing)(xing)材料,如金(jin)(jin)屬(shu)(shu)型(xing)(xing)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)、離心配(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)、連續配(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)、叉(cha)車(che)配(pei)(pei)(pei)件(jian)鐵(tie)(tie)(tie)(tie)(tie)、低壓配(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)等。
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