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鑄鐵配重塊是用于增加自身重量來保持(chi)平衡的重物(wu),是將噴丸機(ji)熔煉成(cheng)符合 要求的液(ye)體(ti)并澆(jiao)進鑄型里,經冷(leng)卻凝固、清整處理后得到有(you)預定形狀、尺寸和性能的鑄件的工(gong)藝(yi)過程。現代(dai)機(ji)械制造工(gong)業的基礎(chu)工(gong)藝(yi)之一。
工(gong)作(zuo)面小(xiao)范圍內的(de)(de)局(ju)部(bu)變化是指(zhi)加工(gong)表面不平(ping)整,有變形,灰口鐵(tie)(tie)可以看作(zuo)是鋼的(de)(de)基體與片狀(zhuang)石(shi)(shi)墨的(de)(de)夾雜。因此(ci)石(shi)(shi)墨片越少,越細,為了(le)保證鑄(zhu)鐵(tie)(tie)在澆鑄(zhu)能夠得(de)到(dao)灰口,且不至于(yu)得(de)到(dao)過多(duo)和粗(cu)(cu)大的(de)(de)石(shi)(shi)墨片,這里所說的(de)(de)工(gong)作(zuo)面小(xiao)范圍,對小(xiao)鑄(zhu)鐵(tie)(tie)平(ping)板而言是局(ju)部(bu)位置(zhi),對大鑄(zhu)鐵(tie)(tie)平(ping)板而言是局(ju)部(bu)面積。鑄(zhu)鐵(tie)(tie)平(ping)板的(de)(de)平(ping)整性反(fan)映(ying)了(le)鑄(zhu)鐵(tie)(tie)平(ping)板局(ju)部(bu)誤差(cha)鑄(zhu)鐵(tie)(tie)平(ping)板的(de)(de)局(ju)部(bu)誤差(cha)是指(zhi)鑄(zhu)鐵(tie)(tie)平(ping)板工(gong)作(zuo)面局(ju)部(bu)平(ping)面度加工(gong)質(zhi)量,即表面粗(cu)(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(jian)里(li),造(zao)(zao)型(xing)(xing)(xing)造(zao)(zao)芯(xin)都實現了(le)機(ji)械化或自動化。常(chang)用的砂型(xing)(xing)(xing)造(zao)(zao)型(xing)(xing)(xing)造(zao)(zao)芯(xin)設備有(you)高(gao)、中(zhong)、低(di)壓造(zao)(zao)型(xing)(xing)(xing)機(ji)、拋(pao)砂機(ji)、無箱射壓造(zao)(zao)型(xing)(xing)(xing)機(ji)、射芯(xin)機(ji)、冷和熱芯(xin)盒(he)機(ji)等。
叉車配重鐵(tie)工(gong)藝可分為三個基(ji)本部分,即配(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)金(jin)(jin)(jin)屬(shu)(shu)準(zhun)備、鑄(zhu)型(xing)準(zhun)備和鑄(zhu)件處理。 配(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)金(jin)(jin)(jin)屬(shu)(shu)是指配(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)生產(chan)中用(yong)于(yu)澆(jiao)注鑄(zhu)件的(de)金(jin)(jin)(jin)屬(shu)(shu)材(cai)料(liao)(liao),它是以一(yi)種金(jin)(jin)(jin)屬(shu)(shu)元(yuan)素(su)為主要(yao)成分,并加入其他金(jin)(jin)(jin)屬(shu)(shu)或(huo)非(fei)金(jin)(jin)(jin)屬(shu)(shu)元(yuan)素(su)而組成的(de)合金(jin)(jin)(jin),習慣上稱為配(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)合金(jin)(jin)(jin),主要(yao)有鑄(zhu)鐵(tie)、鑄(zhu)鋼和配(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)有色合金(jin)(jin)(jin)。叉(cha)車配(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)按造(zao)型(xing)材(cai)料(liao)(liao)的(de)不同,又可分為兩大類:一(yi)類以天然(ran)礦(kuang)產(chan)砂石作(zuo)為主要(yao)造(zao)型(xing)材(cai)料(liao)(liao),如熔模配(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)、殼型(xing)配(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)、負壓配(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)、泥(ni)型(xing)配(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)、實型(xing)配(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)、陶瓷型(xing)配(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)等(deng);一(yi)類以金(jin)(jin)(jin)屬(shu)(shu)作(zuo)為主要(yao)鑄(zhu)型(xing)材(cai)料(liao)(liao),如金(jin)(jin)(jin)屬(shu)(shu)型(xing)配(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)、離(li)心配(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)、連續(xu)配(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)、叉(cha)車配(pei)(pei)件鐵(tie)、低壓配(pei)(pei)重(zhong)(zhong)(zhong)鐵(tie)等(deng)。
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