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鑄鐵配重塊是(shi)用(yong)于增加自身重(zhong)量來保持平衡的重(zhong)物,是(shi)將噴(pen)丸機熔煉成符合 要求的液(ye)體并澆進鑄型里,經冷卻(que)凝固、清(qing)整(zheng)處理(li)后得到有預(yu)定形(xing)狀、尺寸(cun)和性能(neng)的鑄件(jian)的工(gong)藝過(guo)程。現代機械制造工(gong)業的基礎(chu)工(gong)藝之一(yi)。
工(gong)作(zuo)(zuo)面(mian)小(xiao)范圍內的局部(bu)(bu)變(bian)化是(shi)(shi)(shi)指(zhi)加(jia)工(gong)表面(mian)不平(ping)(ping)整(zheng),有變(bian)形,灰口鐵(tie)(tie)可(ke)以看作(zuo)(zuo)是(shi)(shi)(shi)鋼的基體與(yu)片狀石(shi)墨的夾雜。因(yin)此石(shi)墨片越少,越細,為了保(bao)證鑄鐵(tie)(tie)在澆鑄能(neng)夠得到灰口,且不至于得到過多和粗大(da)的石(shi)墨片,這里所說的工(gong)作(zuo)(zuo)面(mian)小(xiao)范圍,對(dui)小(xiao)鑄鐵(tie)(tie)平(ping)(ping)板而(er)言(yan)是(shi)(shi)(shi)局部(bu)(bu)位置,對(dui)大(da)鑄鐵(tie)(tie)平(ping)(ping)板而(er)言(yan)是(shi)(shi)(shi)局部(bu)(bu)面(mian)積。鑄鐵(tie)(tie)平(ping)(ping)板的平(ping)(ping)整(zheng)性反映了鑄鐵(tie)(tie)平(ping)(ping)板局部(bu)(bu)誤(wu)(wu)差鑄鐵(tie)(tie)平(ping)(ping)板的局部(bu)(bu)誤(wu)(wu)差是(shi)(shi)(shi)指(zhi)鑄鐵(tie)(tie)平(ping)(ping)板工(gong)作(zuo)(zuo)面(mian)局部(bu)(bu)平(ping)(ping)面(mian)度(du)加(jia)工(gong)質量,即表面(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間(jian)里,造(zao)型造(zao)芯(xin)(xin)都實(shi)現了機(ji)(ji)械化或自動化。常(chang)用的砂型造(zao)型造(zao)芯(xin)(xin)設備有高(gao)、中、低(di)壓造(zao)型機(ji)(ji)、拋砂機(ji)(ji)、無箱(xiang)射壓造(zao)型機(ji)(ji)、射芯(xin)(xin)機(ji)(ji)、冷和(he)熱芯(xin)(xin)盒機(ji)(ji)等(deng)。
叉車配重鐵(tie)(tie)(tie)(tie)工藝可分為(wei)三(san)個基(ji)本部(bu)分,即配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)金(jin)(jin)(jin)(jin)(jin)(jin)屬(shu)準備(bei)、鑄(zhu)(zhu)型(xing)(xing)(xing)(xing)準備(bei)和鑄(zhu)(zhu)件(jian)處理。 配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)金(jin)(jin)(jin)(jin)(jin)(jin)屬(shu)是指配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)生(sheng)產(chan)中用于澆注鑄(zhu)(zhu)件(jian)的金(jin)(jin)(jin)(jin)(jin)(jin)屬(shu)材(cai)料,它(ta)是以(yi)一種(zhong)金(jin)(jin)(jin)(jin)(jin)(jin)屬(shu)元(yuan)素為(wei)主(zhu)要(yao)成(cheng)(cheng)分,并(bing)加入(ru)其他金(jin)(jin)(jin)(jin)(jin)(jin)屬(shu)或非金(jin)(jin)(jin)(jin)(jin)(jin)屬(shu)元(yuan)素而組成(cheng)(cheng)的合(he)金(jin)(jin)(jin)(jin)(jin)(jin),習慣上(shang)稱為(wei)配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)合(he)金(jin)(jin)(jin)(jin)(jin)(jin),主(zhu)要(yao)有鑄(zhu)(zhu)鐵(tie)(tie)(tie)(tie)、鑄(zhu)(zhu)鋼和配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)有色(se)合(he)金(jin)(jin)(jin)(jin)(jin)(jin)。叉車配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)按(an)造型(xing)(xing)(xing)(xing)材(cai)料的不(bu)同,又可分為(wei)兩大類:一類以(yi)天然礦產(chan)砂石作為(wei)主(zhu)要(yao)造型(xing)(xing)(xing)(xing)材(cai)料,如(ru)熔模配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)、殼型(xing)(xing)(xing)(xing)配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)、負壓配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)、泥型(xing)(xing)(xing)(xing)配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)、實型(xing)(xing)(xing)(xing)配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)、陶瓷(ci)型(xing)(xing)(xing)(xing)配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)等;一類以(yi)金(jin)(jin)(jin)(jin)(jin)(jin)屬(shu)作為(wei)主(zhu)要(yao)鑄(zhu)(zhu)型(xing)(xing)(xing)(xing)材(cai)料,如(ru)金(jin)(jin)(jin)(jin)(jin)(jin)屬(shu)型(xing)(xing)(xing)(xing)配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)、離心配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)、連續配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)、叉車配(pei)(pei)(pei)(pei)(pei)件(jian)鐵(tie)(tie)(tie)(tie)、低(di)壓配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)等。
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