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鑄鐵配重塊是(shi)用(yong)于增加自身重(zhong)量(liang)來(lai)保(bao)持(chi)平衡的(de)重(zhong)物,是(shi)將噴丸機熔煉成符合 要(yao)求的(de)液體并澆進鑄型里,經冷卻凝固、清(qing)整(zheng)處理(li)后(hou)得到有預定形狀、尺寸和性(xing)能的(de)鑄件的(de)工藝過程。現(xian)代機械制(zhi)造工業的(de)基礎工藝之(zhi)一。
工(gong)作面(mian)(mian)(mian)(mian)(mian)小(xiao)范圍內的(de)(de)(de)局部(bu)變化是(shi)指加工(gong)表面(mian)(mian)(mian)(mian)(mian)不平(ping)(ping)(ping)整(zheng),有變形,灰(hui)口(kou)鐵(tie)可(ke)以看作是(shi)鋼的(de)(de)(de)基(ji)體與片(pian)狀石(shi)墨的(de)(de)(de)夾(jia)雜。因此石(shi)墨片(pian)越少(shao),越細,為了保證鑄(zhu)(zhu)鐵(tie)在澆鑄(zhu)(zhu)能夠(gou)得到(dao)灰(hui)口(kou),且不至于(yu)得到(dao)過多和粗(cu)大的(de)(de)(de)石(shi)墨片(pian),這里所說的(de)(de)(de)工(gong)作面(mian)(mian)(mian)(mian)(mian)小(xiao)范圍,對小(xiao)鑄(zhu)(zhu)鐵(tie)平(ping)(ping)(ping)板而言(yan)是(shi)局部(bu)位置,對大鑄(zhu)(zhu)鐵(tie)平(ping)(ping)(ping)板而言(yan)是(shi)局部(bu)面(mian)(mian)(mian)(mian)(mian)積。鑄(zhu)(zhu)鐵(tie)平(ping)(ping)(ping)板的(de)(de)(de)平(ping)(ping)(ping)整(zheng)性反映(ying)了鑄(zhu)(zhu)鐵(tie)平(ping)(ping)(ping)板局部(bu)誤(wu)差鑄(zhu)(zhu)鐵(tie)平(ping)(ping)(ping)板的(de)(de)(de)局部(bu)誤(wu)差是(shi)指鑄(zhu)(zhu)鐵(tie)平(ping)(ping)(ping)板工(gong)作面(mian)(mian)(mian)(mian)(mian)局部(bu)平(ping)(ping)(ping)面(mian)(mian)(mian)(mian)(mian)度加工(gong)質量,即表面(mian)(mian)(mian)(mian)(mian)粗(cu)糙度。
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間里(li),造(zao)(zao)型造(zao)(zao)芯都(dou)實現了機(ji)械化或自(zi)動化。常用(yong)的砂(sha)型造(zao)(zao)型造(zao)(zao)芯設備有高、中、低(di)壓(ya)造(zao)(zao)型機(ji)、拋砂(sha)機(ji)、無箱(xiang)射(she)壓(ya)造(zao)(zao)型機(ji)、射(she)芯機(ji)、冷和熱芯盒(he)機(ji)等。
叉車配重鐵工藝(yi)可分(fen)為(wei)(wei)三個基本(ben)部分(fen),即配(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵金(jin)(jin)屬(shu)(shu)準備、鑄(zhu)型(xing)(xing)準備和(he)(he)鑄(zhu)件(jian)處理。 配(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵金(jin)(jin)屬(shu)(shu)是指配(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵生產中用于澆注(zhu)鑄(zhu)件(jian)的金(jin)(jin)屬(shu)(shu)材(cai)(cai)料,它是以(yi)一(yi)種金(jin)(jin)屬(shu)(shu)元(yuan)素(su)為(wei)(wei)主(zhu)要成分(fen),并加入其他金(jin)(jin)屬(shu)(shu)或(huo)非(fei)金(jin)(jin)屬(shu)(shu)元(yuan)素(su)而組成的合金(jin)(jin),習慣(guan)上稱為(wei)(wei)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵合金(jin)(jin),主(zhu)要有鑄(zhu)鐵、鑄(zhu)鋼(gang)和(he)(he)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵有色合金(jin)(jin)。叉車(che)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵按造型(xing)(xing)材(cai)(cai)料的不同(tong),又可分(fen)為(wei)(wei)兩(liang)大類(lei):一(yi)類(lei)以(yi)天然礦(kuang)產砂(sha)石作為(wei)(wei)主(zhu)要造型(xing)(xing)材(cai)(cai)料,如(ru)熔模配(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵、殼型(xing)(xing)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵、負壓配(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵、泥型(xing)(xing)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵、實型(xing)(xing)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵、陶瓷型(xing)(xing)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵等;一(yi)類(lei)以(yi)金(jin)(jin)屬(shu)(shu)作為(wei)(wei)主(zhu)要鑄(zhu)型(xing)(xing)材(cai)(cai)料,如(ru)金(jin)(jin)屬(shu)(shu)型(xing)(xing)配(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵、離心配(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵、連續配(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵、叉車(che)配(pei)(pei)(pei)件(jian)鐵、低(di)壓配(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵等。
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