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鑄鐵配重塊是用(yong)于增(zeng)加自身重量來保(bao)持(chi)平衡的(de)重物,是將噴丸機(ji)(ji)熔煉成符合(he) 要(yao)求的(de)液體并澆進鑄(zhu)型里,經冷卻凝固(gu)、清整處理后得到有(you)預(yu)定形狀、尺寸和性(xing)能的(de)鑄(zhu)件(jian)的(de)工(gong)藝過程。現(xian)代機(ji)(ji)械制(zhi)造(zao)工(gong)業的(de)基礎(chu)工(gong)藝之一。
工(gong)作面(mian)(mian)小(xiao)范(fan)圍(wei)內的局部(bu)變化是(shi)指加工(gong)表面(mian)(mian)不平(ping)(ping)整,有變形(xing),灰口鐵可以(yi)看作是(shi)鋼的基體與片狀(zhuang)石墨(mo)的夾雜(za)。因此石墨(mo)片越(yue)少,越(yue)細,為了保證(zheng)鑄(zhu)鐵在澆鑄(zhu)能夠得(de)到灰口,且不至(zhi)于得(de)到過多和粗大的石墨(mo)片,這(zhe)里(li)所說的工(gong)作面(mian)(mian)小(xiao)范(fan)圍(wei),對小(xiao)鑄(zhu)鐵平(ping)(ping)板(ban)而(er)言(yan)是(shi)局部(bu)位置,對大鑄(zhu)鐵平(ping)(ping)板(ban)而(er)言(yan)是(shi)局部(bu)面(mian)(mian)積(ji)。鑄(zhu)鐵平(ping)(ping)板(ban)的平(ping)(ping)整性反映(ying)了鑄(zhu)鐵平(ping)(ping)板(ban)局部(bu)誤差鑄(zhu)鐵平(ping)(ping)板(ban)的局部(bu)誤差是(shi)指鑄(zhu)鐵平(ping)(ping)板(ban)工(gong)作面(mian)(mian)局部(bu)平(ping)(ping)面(mian)(mian)度加工(gong)質(zhi)量,即表面(mian)(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(zao)型(xing)(xing)造(zao)芯(xin)都實現了(le)機械化或自動化。常(chang)用的砂(sha)型(xing)(xing)造(zao)型(xing)(xing)造(zao)芯(xin)設(she)備有高、中(zhong)、低壓(ya)造(zao)型(xing)(xing)機、拋砂(sha)機、無箱射(she)壓(ya)造(zao)型(xing)(xing)機、射(she)芯(xin)機、冷和(he)熱芯(xin)盒機等(deng)。
叉車配重鐵(tie)(tie)(tie)(tie)(tie)工(gong)藝(yi)可分為(wei)三(san)個基本部分,即(ji)配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)金(jin)屬(shu)準(zhun)備、鑄型(xing)準(zhun)備和(he)鑄件(jian)處理。 配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)金(jin)屬(shu)是指配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)生產(chan)中(zhong)用于澆注鑄件(jian)的金(jin)屬(shu)材(cai)料(liao),它是以(yi)一種金(jin)屬(shu)元素(su)為(wei)主要(yao)成分,并(bing)加入其他金(jin)屬(shu)或非金(jin)屬(shu)元素(su)而組成的合(he)金(jin),習慣上(shang)稱為(wei)配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)合(he)金(jin),主要(yao)有鑄鐵(tie)(tie)(tie)(tie)(tie)、鑄鋼和(he)配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)有色(se)合(he)金(jin)。叉(cha)車配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)按造(zao)型(xing)材(cai)料(liao)的不同,又可分為(wei)兩大(da)類:一類以(yi)天然(ran)礦產(chan)砂石作為(wei)主要(yao)造(zao)型(xing)材(cai)料(liao),如熔模配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)、殼型(xing)配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)、負(fu)壓配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)、泥型(xing)配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)、實型(xing)配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)、陶瓷型(xing)配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)等(deng);一類以(yi)金(jin)屬(shu)作為(wei)主要(yao)鑄型(xing)材(cai)料(liao),如金(jin)屬(shu)型(xing)配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)、離心配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)、連(lian)續配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)、叉(cha)車配(pei)(pei)(pei)(pei)件(jian)鐵(tie)(tie)(tie)(tie)(tie)、低壓配(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)等(deng)。
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