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鑄鐵配重塊是用于增(zeng)加自身重量來保(bao)持平衡的重物(wu),是將噴丸機(ji)熔(rong)煉成(cheng)符(fu)合 要求的液體并澆進鑄型里,經冷卻凝(ning)固、清整處理后得到有預定形狀、尺寸和性(xing)能的鑄件的工(gong)(gong)藝(yi)過程。現(xian)代機(ji)械制造工(gong)(gong)業的基礎工(gong)(gong)藝(yi)之(zhi)一。
工作面小(xiao)范(fan)圍內的局部(bu)(bu)變化是(shi)指加工表面不平(ping)(ping)整,有變形(xing),灰口(kou)(kou)鐵可以看(kan)作是(shi)鋼的基體與片狀(zhuang)石墨的夾雜。因此石墨片越(yue)少(shao),越(yue)細,為了保證鑄(zhu)鐵在澆鑄(zhu)能夠得(de)到灰口(kou)(kou),且不至(zhi)于得(de)到過多和粗大(da)的石墨片,這里(li)所說的工作面小(xiao)范(fan)圍,對小(xiao)鑄(zhu)鐵平(ping)(ping)板(ban)而言(yan)是(shi)局部(bu)(bu)位置,對大(da)鑄(zhu)鐵平(ping)(ping)板(ban)而言(yan)是(shi)局部(bu)(bu)面積。鑄(zhu)鐵平(ping)(ping)板(ban)的平(ping)(ping)整性(xing)反映了鑄(zhu)鐵平(ping)(ping)板(ban)局部(bu)(bu)誤(wu)差鑄(zhu)鐵平(ping)(ping)板(ban)的局部(bu)(bu)誤(wu)差是(shi)指鑄(zhu)鐵平(ping)(ping)板(ban)工作面局部(bu)(bu)平(ping)(ping)面度加工質(zhi)量(liang),即表面粗糙度。
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)(zao)型(xing)(xing)(xing)造(zao)(zao)芯(xin)(xin)都實現了(le)機(ji)(ji)械化(hua)或(huo)自動化(hua)。常用的砂型(xing)(xing)(xing)造(zao)(zao)型(xing)(xing)(xing)造(zao)(zao)芯(xin)(xin)設(she)備有高、中、低壓造(zao)(zao)型(xing)(xing)(xing)機(ji)(ji)、拋砂機(ji)(ji)、無箱(xiang)射(she)壓造(zao)(zao)型(xing)(xing)(xing)機(ji)(ji)、射(she)芯(xin)(xin)機(ji)(ji)、冷和熱芯(xin)(xin)盒機(ji)(ji)等。
叉車配重鐵(tie)(tie)(tie)(tie)(tie)(tie)工藝可分為(wei)(wei)(wei)三個基(ji)本(ben)部分,即配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)(tie)金(jin)(jin)(jin)(jin)屬(shu)準(zhun)備、鑄(zhu)型(xing)(xing)(xing)準(zhun)備和鑄(zhu)件處理。 配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)(tie)金(jin)(jin)(jin)(jin)屬(shu)是指配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)(tie)生(sheng)產(chan)中用(yong)于澆注(zhu)鑄(zhu)件的(de)金(jin)(jin)(jin)(jin)屬(shu)材(cai)(cai)料,它是以(yi)一(yi)種金(jin)(jin)(jin)(jin)屬(shu)元素為(wei)(wei)(wei)主(zhu)要(yao)成分,并(bing)加入其他金(jin)(jin)(jin)(jin)屬(shu)或非金(jin)(jin)(jin)(jin)屬(shu)元素而組成的(de)合(he)金(jin)(jin)(jin)(jin),習(xi)慣上稱為(wei)(wei)(wei)配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)(tie)合(he)金(jin)(jin)(jin)(jin),主(zhu)要(yao)有鑄(zhu)鐵(tie)(tie)(tie)(tie)(tie)(tie)、鑄(zhu)鋼和配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)(tie)有色合(he)金(jin)(jin)(jin)(jin)。叉(cha)(cha)車配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)(tie)按(an)造型(xing)(xing)(xing)材(cai)(cai)料的(de)不同,又(you)可分為(wei)(wei)(wei)兩(liang)大類:一(yi)類以(yi)天然礦產(chan)砂石作為(wei)(wei)(wei)主(zhu)要(yao)造型(xing)(xing)(xing)材(cai)(cai)料,如熔模配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)(tie)、殼型(xing)(xing)(xing)配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)(tie)、負壓配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)(tie)、泥型(xing)(xing)(xing)配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)(tie)、實(shi)型(xing)(xing)(xing)配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)(tie)、陶瓷型(xing)(xing)(xing)配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)(tie)等;一(yi)類以(yi)金(jin)(jin)(jin)(jin)屬(shu)作為(wei)(wei)(wei)主(zhu)要(yao)鑄(zhu)型(xing)(xing)(xing)材(cai)(cai)料,如金(jin)(jin)(jin)(jin)屬(shu)型(xing)(xing)(xing)配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)(tie)、離心配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)(tie)、連續配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)(tie)、叉(cha)(cha)車配(pei)(pei)(pei)(pei)(pei)件鐵(tie)(tie)(tie)(tie)(tie)(tie)、低壓配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)(tie)(tie)等。
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