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鑄鐵配重塊是用(yong)于增加自身重(zhong)量來保持平(ping)衡的重(zhong)物,是將噴丸機熔煉(lian)成符合(he) 要求(qiu)的液體并澆進鑄型里(li),經冷卻凝(ning)固、清整處理后得到有預定形(xing)狀、尺寸和(he)性(xing)能的鑄件的工(gong)藝(yi)(yi)過程。現代機械制造(zao)工(gong)業的基礎工(gong)藝(yi)(yi)之一。
工作(zuo)面小范圍內的局(ju)部變(bian)化是指加(jia)工表面不(bu)(bu)平(ping)(ping)整,有變(bian)形,灰口鐵(tie)可以看(kan)作(zuo)是鋼的基體與片狀石(shi)墨(mo)(mo)的夾(jia)雜。因此(ci)石(shi)墨(mo)(mo)片越少,越細,為了保證鑄鐵(tie)在(zai)澆鑄能夠得到灰口,且不(bu)(bu)至于(yu)得到過多和粗大的石(shi)墨(mo)(mo)片,這(zhe)里所說的工作(zuo)面小范圍,對(dui)小鑄鐵(tie)平(ping)(ping)板(ban)而(er)言是局(ju)部位置(zhi),對(dui)大鑄鐵(tie)平(ping)(ping)板(ban)而(er)言是局(ju)部面積。鑄鐵(tie)平(ping)(ping)板(ban)的平(ping)(ping)整性(xing)反映了鑄鐵(tie)平(ping)(ping)板(ban)局(ju)部誤差(cha)(cha)鑄鐵(tie)平(ping)(ping)板(ban)的局(ju)部誤差(cha)(cha)是指鑄鐵(tie)平(ping)(ping)板(ban)工作(zuo)面局(ju)部平(ping)(ping)面度(du)加(jia)工質量,即(ji)表面粗糙度(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)間里,造(zao)(zao)型造(zao)(zao)芯(xin)都(dou)實現了機(ji)(ji)械化(hua)或自(zi)動化(hua)。常(chang)用的砂(sha)型造(zao)(zao)型造(zao)(zao)芯(xin)設備有(you)高、中、低壓造(zao)(zao)型機(ji)(ji)、拋砂(sha)機(ji)(ji)、無(wu)箱射(she)壓造(zao)(zao)型機(ji)(ji)、射(she)芯(xin)機(ji)(ji)、冷和熱(re)芯(xin)盒機(ji)(ji)等。
叉車配重鐵(tie)(tie)(tie)工藝可(ke)分(fen)為(wei)(wei)三個基本(ben)部(bu)分(fen),即配(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)金(jin)(jin)屬準備、鑄(zhu)(zhu)型(xing)(xing)準備和(he)鑄(zhu)(zhu)件(jian)(jian)處理(li)。 配(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)金(jin)(jin)屬是指(zhi)配(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)生產中用于澆注鑄(zhu)(zhu)件(jian)(jian)的金(jin)(jin)屬材料(liao)(liao),它是以一(yi)種金(jin)(jin)屬元(yuan)素為(wei)(wei)主要成(cheng)分(fen),并加入其他金(jin)(jin)屬或非金(jin)(jin)屬元(yuan)素而組成(cheng)的合金(jin)(jin),習(xi)慣上(shang)稱為(wei)(wei)配(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)合金(jin)(jin),主要有鑄(zhu)(zhu)鐵(tie)(tie)(tie)、鑄(zhu)(zhu)鋼和(he)配(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)有色合金(jin)(jin)。叉車配(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)按(an)造(zao)型(xing)(xing)材料(liao)(liao)的不同(tong),又(you)可(ke)分(fen)為(wei)(wei)兩大(da)類:一(yi)類以天然(ran)礦產砂(sha)石作(zuo)為(wei)(wei)主要造(zao)型(xing)(xing)材料(liao)(liao),如(ru)熔(rong)模配(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)、殼型(xing)(xing)配(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)、負壓(ya)配(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)、泥型(xing)(xing)配(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)、實型(xing)(xing)配(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)、陶(tao)瓷型(xing)(xing)配(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)等;一(yi)類以金(jin)(jin)屬作(zuo)為(wei)(wei)主要鑄(zhu)(zhu)型(xing)(xing)材料(liao)(liao),如(ru)金(jin)(jin)屬型(xing)(xing)配(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)、離心配(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)、連續配(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)、叉車配(pei)(pei)件(jian)(jian)鐵(tie)(tie)(tie)、低壓(ya)配(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)等。
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