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鑄鐵配重塊是用于增加自身(shen)重量來(lai)保(bao)持平衡(heng)的重物,是將(jiang)噴丸機(ji)熔煉(lian)成(cheng)符合(he) 要求的液體并(bing)澆進鑄(zhu)型里,經(jing)冷卻(que)凝(ning)固、清整處(chu)理(li)后得到有預(yu)定形(xing)狀、尺寸(cun)和性(xing)能的鑄(zhu)件的工藝(yi)(yi)過程。現(xian)代機(ji)械制造(zao)工業的基礎工藝(yi)(yi)之一。
工(gong)作(zuo)面小(xiao)(xiao)范(fan)圍內的(de)(de)局(ju)(ju)部(bu)(bu)變化(hua)是(shi)指加工(gong)表面不(bu)平(ping)(ping)(ping)(ping)整,有變形(xing),灰口(kou)鐵(tie)可(ke)以看作(zuo)是(shi)鋼的(de)(de)基體與片狀石墨的(de)(de)夾雜。因此石墨片越少,越細,為了保證鑄(zhu)(zhu)(zhu)鐵(tie)在澆鑄(zhu)(zhu)(zhu)能夠得(de)到(dao)灰口(kou),且不(bu)至(zhi)于得(de)到(dao)過多和粗大(da)的(de)(de)石墨片,這里(li)所說的(de)(de)工(gong)作(zuo)面小(xiao)(xiao)范(fan)圍,對(dui)小(xiao)(xiao)鑄(zhu)(zhu)(zhu)鐵(tie)平(ping)(ping)(ping)(ping)板(ban)(ban)而言是(shi)局(ju)(ju)部(bu)(bu)位置,對(dui)大(da)鑄(zhu)(zhu)(zhu)鐵(tie)平(ping)(ping)(ping)(ping)板(ban)(ban)而言是(shi)局(ju)(ju)部(bu)(bu)面積。鑄(zhu)(zhu)(zhu)鐵(tie)平(ping)(ping)(ping)(ping)板(ban)(ban)的(de)(de)平(ping)(ping)(ping)(ping)整性(xing)反(fan)映了鑄(zhu)(zhu)(zhu)鐵(tie)平(ping)(ping)(ping)(ping)板(ban)(ban)局(ju)(ju)部(bu)(bu)誤差鑄(zhu)(zhu)(zhu)鐵(tie)平(ping)(ping)(ping)(ping)板(ban)(ban)的(de)(de)局(ju)(ju)部(bu)(bu)誤差是(shi)指鑄(zhu)(zhu)(zhu)鐵(tie)平(ping)(ping)(ping)(ping)板(ban)(ban)工(gong)作(zuo)面局(ju)(ju)部(bu)(bu)平(ping)(ping)(ping)(ping)面度(du)加工(gong)質量(liang),即表面粗糙度(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間里,造(zao)型(xing)造(zao)芯(xin)(xin)都實現了機(ji)(ji)(ji)械化(hua)或自(zi)動化(hua)。常用的砂型(xing)造(zao)型(xing)造(zao)芯(xin)(xin)設備有高(gao)、中、低壓造(zao)型(xing)機(ji)(ji)(ji)、拋砂機(ji)(ji)(ji)、無(wu)箱射壓造(zao)型(xing)機(ji)(ji)(ji)、射芯(xin)(xin)機(ji)(ji)(ji)、冷和熱芯(xin)(xin)盒(he)機(ji)(ji)(ji)等。
叉車配重鐵(tie)工藝可分為三個(ge)基(ji)本部(bu)分,即(ji)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)金屬(shu)準備、鑄(zhu)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)準備和(he)鑄(zhu)件(jian)處理。 配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)金屬(shu)是指配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)生(sheng)產(chan)中用于(yu)澆注鑄(zhu)件(jian)的(de)金屬(shu)材(cai)料,它是以一(yi)種金屬(shu)元素為主(zhu)要(yao)成分,并加入其(qi)他金屬(shu)或(huo)非金屬(shu)元素而組(zu)成的(de)合(he)金,習慣上稱為配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)合(he)金,主(zhu)要(yao)有鑄(zhu)鐵(tie)、鑄(zhu)鋼(gang)和(he)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)有色合(he)金。叉車配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)按(an)造型(xing)(xing)(xing)(xing)(xing)(xing)(xing)材(cai)料的(de)不(bu)同(tong),又可分為兩大類(lei):一(yi)類(lei)以天然礦產(chan)砂石(shi)作為主(zhu)要(yao)造型(xing)(xing)(xing)(xing)(xing)(xing)(xing)材(cai)料,如(ru)熔模配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)、殼型(xing)(xing)(xing)(xing)(xing)(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)(xing)(xing)(xing)(xing)(xing)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)、實型(xing)(xing)(xing)(xing)(xing)(xing)(xing)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)、陶瓷型(xing)(xing)(xing)(xing)(xing)(xing)(xing)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)等;一(yi)類(lei)以金屬(shu)作為主(zhu)要(yao)鑄(zhu)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)材(cai)料,如(ru)金屬(shu)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)、離(li)心配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)、連續配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)、叉車配(pei)(pei)(pei)件(jian)鐵(tie)、低(di)壓配(pei)(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)等。
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