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鑄鐵配重塊是用于增加自身重量來保持平衡的(de)重物,是將噴丸機(ji)熔煉成符合(he) 要求(qiu)的(de)液體并澆(jiao)進鑄型里,經冷卻凝固、清整處理后得到有預定形狀(zhuang)、尺(chi)寸(cun)和性能的(de)鑄件的(de)工藝過(guo)程。現代(dai)機(ji)械制造工業的(de)基礎工藝之一。
工(gong)作面(mian)小范圍(wei)內的局(ju)部(bu)(bu)變(bian)(bian)化是(shi)指(zhi)加工(gong)表面(mian)不平(ping)(ping)整(zheng),有變(bian)(bian)形,灰口鐵(tie)(tie)可以看(kan)作是(shi)鋼的基(ji)體(ti)與(yu)片狀石(shi)墨的夾雜。因此石(shi)墨片越(yue)少,越(yue)細,為了保證鑄(zhu)(zhu)(zhu)(zhu)鐵(tie)(tie)在澆鑄(zhu)(zhu)(zhu)(zhu)能夠得到灰口,且(qie)不至于得到過多和粗(cu)大(da)的石(shi)墨片,這(zhe)里(li)所說的工(gong)作面(mian)小范圍(wei),對(dui)小鑄(zhu)(zhu)(zhu)(zhu)鐵(tie)(tie)平(ping)(ping)板(ban)而言是(shi)局(ju)部(bu)(bu)位置,對(dui)大(da)鑄(zhu)(zhu)(zhu)(zhu)鐵(tie)(tie)平(ping)(ping)板(ban)而言是(shi)局(ju)部(bu)(bu)面(mian)積。鑄(zhu)(zhu)(zhu)(zhu)鐵(tie)(tie)平(ping)(ping)板(ban)的平(ping)(ping)整(zheng)性(xing)反映(ying)了鑄(zhu)(zhu)(zhu)(zhu)鐵(tie)(tie)平(ping)(ping)板(ban)局(ju)部(bu)(bu)誤差(cha)鑄(zhu)(zhu)(zhu)(zhu)鐵(tie)(tie)平(ping)(ping)板(ban)的局(ju)部(bu)(bu)誤差(cha)是(shi)指(zhi)鑄(zhu)(zhu)(zhu)(zhu)鐵(tie)(tie)平(ping)(ping)板(ban)工(gong)作面(mian)局(ju)部(bu)(bu)平(ping)(ping)面(mian)度加工(gong)質量,即表面(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)型造(zao)芯(xin)都實現(xian)了機械化或自動(dong)化。常用的砂(sha)型造(zao)型造(zao)芯(xin)設備有高、中、低壓造(zao)型機、拋砂(sha)機、無箱射(she)壓造(zao)型機、射(she)芯(xin)機、冷(leng)和熱芯(xin)盒機等。
叉車配重鐵(tie)(tie)(tie)(tie)工藝可(ke)分(fen)(fen)為三個基本部分(fen)(fen),即配(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)金(jin)屬(shu)準備(bei)、鑄型(xing)準備(bei)和鑄件處理。 配(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)金(jin)屬(shu)是指配(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)生產中(zhong)用于澆注鑄件的(de)金(jin)屬(shu)材(cai)料,它(ta)是以一(yi)種金(jin)屬(shu)元素為主要成(cheng)分(fen)(fen),并加(jia)入其他金(jin)屬(shu)或非(fei)金(jin)屬(shu)元素而組成(cheng)的(de)合(he)(he)金(jin),習(xi)慣上稱為配(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)合(he)(he)金(jin),主要有鑄鐵(tie)(tie)(tie)(tie)、鑄鋼和配(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)有色合(he)(he)金(jin)。叉車(che)配(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)按造型(xing)材(cai)料的(de)不同(tong),又可(ke)分(fen)(fen)為兩大類:一(yi)類以天(tian)然礦產砂石作為主要造型(xing)材(cai)料,如熔模配(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)、殼型(xing)配(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)、負壓(ya)配(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)、泥型(xing)配(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)、實型(xing)配(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)、陶瓷型(xing)配(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)等;一(yi)類以金(jin)屬(shu)作為主要鑄型(xing)材(cai)料,如金(jin)屬(shu)型(xing)配(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)、離心配(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)、連續配(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)、叉車(che)配(pei)件鐵(tie)(tie)(tie)(tie)、低壓(ya)配(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)(tie)等。
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