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鑄鐵配重塊是用于增加自(zi)身重量(liang)來保持平衡(heng)的(de)重物,是將噴丸機(ji)熔煉成符合(he) 要(yao)求的(de)液體并澆進鑄型里,經冷卻凝固、清整處理(li)后得到有預(yu)定形狀、尺(chi)寸和性能(neng)的(de)鑄件(jian)的(de)工(gong)藝(yi)過(guo)程(cheng)。現代(dai)機(ji)械(xie)制造工(gong)業(ye)的(de)基礎工(gong)藝(yi)之一。
工(gong)作(zuo)(zuo)(zuo)面(mian)小范(fan)圍內(nei)的(de)局(ju)(ju)部(bu)變化(hua)是(shi)(shi)指(zhi)加工(gong)表面(mian)不平(ping)(ping)整,有變形,灰口鐵(tie)(tie)可以看作(zuo)(zuo)(zuo)是(shi)(shi)鋼的(de)基體與片狀(zhuang)石(shi)(shi)墨的(de)夾雜。因此石(shi)(shi)墨片越(yue)少,越(yue)細(xi),為了(le)保證鑄(zhu)(zhu)(zhu)(zhu)鐵(tie)(tie)在(zai)澆(jiao)鑄(zhu)(zhu)(zhu)(zhu)能夠得到灰口,且(qie)不至于得到過多和粗大的(de)石(shi)(shi)墨片,這里所說(shuo)的(de)工(gong)作(zuo)(zuo)(zuo)面(mian)小范(fan)圍,對小鑄(zhu)(zhu)(zhu)(zhu)鐵(tie)(tie)平(ping)(ping)板而(er)言是(shi)(shi)局(ju)(ju)部(bu)位置,對大鑄(zhu)(zhu)(zhu)(zhu)鐵(tie)(tie)平(ping)(ping)板而(er)言是(shi)(shi)局(ju)(ju)部(bu)面(mian)積(ji)。鑄(zhu)(zhu)(zhu)(zhu)鐵(tie)(tie)平(ping)(ping)板的(de)平(ping)(ping)整性反映了(le)鑄(zhu)(zhu)(zhu)(zhu)鐵(tie)(tie)平(ping)(ping)板局(ju)(ju)部(bu)誤差鑄(zhu)(zhu)(zhu)(zhu)鐵(tie)(tie)平(ping)(ping)板的(de)局(ju)(ju)部(bu)誤差是(shi)(shi)指(zhi)鑄(zhu)(zhu)(zhu)(zhu)鐵(tie)(tie)平(ping)(ping)板工(gong)作(zuo)(zuo)(zuo)面(mian)局(ju)(ju)部(bu)平(ping)(ping)面(mian)度加工(gong)質量,即表面(mian)粗糙度。
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,造型造芯都實現了機械化(hua)或自動化(hua)。常用的砂型造型造芯設備有高、中、低壓(ya)造型機、拋砂機、無(wu)箱射(she)壓(ya)造型機、射(she)芯機、冷和熱芯盒機等。
叉車配重鐵工藝(yi)可分為(wei)三個(ge)基本(ben)部分,即(ji)配重(zhong)(zhong)(zhong)鐵金(jin)(jin)屬準備、鑄(zhu)型(xing)準備和(he)(he)鑄(zhu)件(jian)處理。 配重(zhong)(zhong)(zhong)鐵金(jin)(jin)屬是指(zhi)配重(zhong)(zhong)(zhong)鐵生產(chan)中(zhong)用(yong)于(yu)澆注鑄(zhu)件(jian)的金(jin)(jin)屬材(cai)(cai)料(liao)(liao),它是以(yi)一(yi)種金(jin)(jin)屬元(yuan)素(su)為(wei)主要(yao)成分,并(bing)加(jia)入其他金(jin)(jin)屬或非(fei)金(jin)(jin)屬元(yuan)素(su)而組成的合(he)(he)金(jin)(jin),習慣(guan)上稱為(wei)配重(zhong)(zhong)(zhong)鐵合(he)(he)金(jin)(jin),主要(yao)有鑄(zhu)鐵、鑄(zhu)鋼和(he)(he)配重(zhong)(zhong)(zhong)鐵有色合(he)(he)金(jin)(jin)。叉車(che)配重(zhong)(zhong)(zhong)鐵按造(zao)型(xing)材(cai)(cai)料(liao)(liao)的不同,又(you)可分為(wei)兩(liang)大類:一(yi)類以(yi)天然礦產(chan)砂石作為(wei)主要(yao)造(zao)型(xing)材(cai)(cai)料(liao)(liao),如(ru)熔模配重(zhong)(zhong)(zhong)鐵、殼型(xing)配重(zhong)(zhong)(zhong)鐵、負壓配重(zhong)(zhong)(zhong)鐵、泥型(xing)配重(zhong)(zhong)(zhong)鐵、實(shi)型(xing)配重(zhong)(zhong)(zhong)鐵、陶(tao)瓷(ci)型(xing)配重(zhong)(zhong)(zhong)鐵等(deng);一(yi)類以(yi)金(jin)(jin)屬作為(wei)主要(yao)鑄(zhu)型(xing)材(cai)(cai)料(liao)(liao),如(ru)金(jin)(jin)屬型(xing)配重(zhong)(zhong)(zhong)鐵、離心(xin)配重(zhong)(zhong)(zhong)鐵、連續配重(zhong)(zhong)(zhong)鐵、叉車(che)配件(jian)鐵、低壓配重(zhong)(zhong)(zhong)鐵等(deng)。
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