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鑄鐵配重塊是用(yong)于增(zeng)加(jia)自身重量(liang)來保(bao)持平衡的(de)重物(wu),是將噴丸機(ji)熔煉成符(fu)合 要求(qiu)的(de)液體(ti)并澆進鑄(zhu)型里,經(jing)冷卻凝固(gu)、清整處理后得(de)到有預(yu)定形狀、尺寸和性能的(de)鑄(zhu)件的(de)工藝過程。現(xian)代機(ji)械制造工業的(de)基礎工藝之一(yi)。
工(gong)作(zuo)面(mian)(mian)小范(fan)圍(wei)內的(de)局(ju)(ju)部(bu)變化是(shi)(shi)指加(jia)工(gong)表(biao)面(mian)(mian)不(bu)平(ping)(ping)(ping)整(zheng),有(you)變形,灰(hui)口(kou)鐵(tie)可以看作(zuo)是(shi)(shi)鋼(gang)的(de)基體與片狀石墨的(de)夾雜。因此(ci)石墨片越(yue)少,越(yue)細,為了保證鑄(zhu)鐵(tie)在澆鑄(zhu)能夠得(de)(de)到灰(hui)口(kou),且不(bu)至(zhi)于(yu)得(de)(de)到過多和(he)粗(cu)大(da)的(de)石墨片,這里所說的(de)工(gong)作(zuo)面(mian)(mian)小范(fan)圍(wei),對(dui)小鑄(zhu)鐵(tie)平(ping)(ping)(ping)板(ban)而言是(shi)(shi)局(ju)(ju)部(bu)位置,對(dui)大(da)鑄(zhu)鐵(tie)平(ping)(ping)(ping)板(ban)而言是(shi)(shi)局(ju)(ju)部(bu)面(mian)(mian)積。鑄(zhu)鐵(tie)平(ping)(ping)(ping)板(ban)的(de)平(ping)(ping)(ping)整(zheng)性(xing)反映(ying)了鑄(zhu)鐵(tie)平(ping)(ping)(ping)板(ban)局(ju)(ju)部(bu)誤差(cha)鑄(zhu)鐵(tie)平(ping)(ping)(ping)板(ban)的(de)局(ju)(ju)部(bu)誤差(cha)是(shi)(shi)指鑄(zhu)鐵(tie)平(ping)(ping)(ping)板(ban)工(gong)作(zuo)面(mian)(mian)局(ju)(ju)部(bu)平(ping)(ping)(ping)面(mian)(mian)度加(jia)工(gong)質量,即表(biao)面(mian)(mian)粗(cu)糙(cao)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,造(zao)型(xing)造(zao)芯(xin)都實現(xian)了機(ji)械化或自(zi)動化。常用的砂型(xing)造(zao)型(xing)造(zao)芯(xin)設備有高、中(zhong)、低壓造(zao)型(xing)機(ji)、拋砂機(ji)、無箱(xiang)射(she)壓造(zao)型(xing)機(ji)、射(she)芯(xin)機(ji)、冷和熱芯(xin)盒機(ji)等。
叉車配重鐵(tie)(tie)工藝(yi)可分(fen)為三個基(ji)本(ben)部(bu)分(fen),即配(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)金(jin)屬(shu)(shu)準(zhun)(zhun)備、鑄(zhu)(zhu)型(xing)(xing)準(zhun)(zhun)備和鑄(zhu)(zhu)件(jian)處(chu)理。 配(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)金(jin)屬(shu)(shu)是(shi)指配(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)生(sheng)產中用(yong)于(yu)澆注鑄(zhu)(zhu)件(jian)的金(jin)屬(shu)(shu)材(cai)料,它是(shi)以(yi)(yi)(yi)一種金(jin)屬(shu)(shu)元(yuan)素為主(zhu)要成分(fen),并加入其他金(jin)屬(shu)(shu)或非金(jin)屬(shu)(shu)元(yuan)素而組成的合金(jin),習慣上稱(cheng)為配(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)合金(jin),主(zhu)要有鑄(zhu)(zhu)鐵(tie)(tie)、鑄(zhu)(zhu)鋼和配(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)有色(se)合金(jin)。叉車配(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)按造型(xing)(xing)材(cai)料的不同,又可分(fen)為兩大類:一類以(yi)(yi)(yi)天然礦產砂(sha)石作(zuo)為主(zhu)要造型(xing)(xing)材(cai)料,如熔模配(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)、殼型(xing)(xing)配(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)、負壓(ya)配(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)、泥型(xing)(xing)配(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)、實型(xing)(xing)配(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)、陶瓷(ci)型(xing)(xing)配(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)等(deng);一類以(yi)(yi)(yi)金(jin)屬(shu)(shu)作(zuo)為主(zhu)要鑄(zhu)(zhu)型(xing)(xing)材(cai)料,如金(jin)屬(shu)(shu)型(xing)(xing)配(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)、離心配(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)、連續配(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)、叉車配(pei)件(jian)鐵(tie)(tie)、低(di)壓(ya)配(pei)重(zhong)(zhong)(zhong)鐵(tie)(tie)等(deng)。
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