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鑄鐵配重塊是(shi)用于(yu)增加自(zi)身(shen)重量(liang)來(lai)保持平(ping)衡的(de)(de)重物,是(shi)將噴丸機熔煉成(cheng)符合 要(yao)求的(de)(de)液體并(bing)澆(jiao)進鑄(zhu)型里,經(jing)冷(leng)卻(que)凝固(gu)、清整(zheng)處理(li)后得到有(you)預定(ding)形狀、尺寸和(he)性能的(de)(de)鑄(zhu)件的(de)(de)工(gong)藝過程。現代機械制造工(gong)業(ye)的(de)(de)基礎(chu)工(gong)藝之(zhi)一。
工作(zuo)面(mian)(mian)(mian)小(xiao)范(fan)圍(wei)(wei)內的局部(bu)(bu)(bu)變化(hua)是(shi)指加工表面(mian)(mian)(mian)不平(ping)(ping)(ping)整(zheng)(zheng),有變形(xing),灰口鐵(tie)(tie)(tie)可以看作(zuo)是(shi)鋼的基(ji)體(ti)與片狀(zhuang)石墨(mo)的夾雜。因此(ci)石墨(mo)片越少,越細,為(wei)了(le)保證鑄(zhu)(zhu)鐵(tie)(tie)(tie)在澆(jiao)鑄(zhu)(zhu)能夠(gou)得(de)到灰口,且(qie)不至于得(de)到過多和粗大(da)的石墨(mo)片,這里所說(shuo)的工作(zuo)面(mian)(mian)(mian)小(xiao)范(fan)圍(wei)(wei),對小(xiao)鑄(zhu)(zhu)鐵(tie)(tie)(tie)平(ping)(ping)(ping)板(ban)而言是(shi)局部(bu)(bu)(bu)位置(zhi),對大(da)鑄(zhu)(zhu)鐵(tie)(tie)(tie)平(ping)(ping)(ping)板(ban)而言是(shi)局部(bu)(bu)(bu)面(mian)(mian)(mian)積。鑄(zhu)(zhu)鐵(tie)(tie)(tie)平(ping)(ping)(ping)板(ban)的平(ping)(ping)(ping)整(zheng)(zheng)性反(fan)映(ying)了(le)鑄(zhu)(zhu)鐵(tie)(tie)(tie)平(ping)(ping)(ping)板(ban)局部(bu)(bu)(bu)誤(wu)(wu)差(cha)鑄(zhu)(zhu)鐵(tie)(tie)(tie)平(ping)(ping)(ping)板(ban)的局部(bu)(bu)(bu)誤(wu)(wu)差(cha)是(shi)指鑄(zhu)(zhu)鐵(tie)(tie)(tie)平(ping)(ping)(ping)板(ban)工作(zuo)面(mian)(mian)(mian)局部(bu)(bu)(bu)平(ping)(ping)(ping)面(mian)(mian)(mian)度加工質量,即表面(mian)(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,造型(xing)造芯(xin)(xin)都實現(xian)了機(ji)械化或自動(dong)化。常用的砂型(xing)造型(xing)造芯(xin)(xin)設(she)備有高、中、低壓(ya)造型(xing)機(ji)、拋砂機(ji)、無箱射(she)壓(ya)造型(xing)機(ji)、射(she)芯(xin)(xin)機(ji)、冷和熱芯(xin)(xin)盒(he)機(ji)等(deng)。
叉車配重鐵(tie)(tie)(tie)工藝可分(fen)為(wei)三個基本部分(fen),即配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)金屬(shu)(shu)(shu)(shu)(shu)準備、鑄型(xing)準備和鑄件(jian)(jian)處理。 配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)金屬(shu)(shu)(shu)(shu)(shu)是指(zhi)配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)生(sheng)產中用于澆(jiao)注鑄件(jian)(jian)的金屬(shu)(shu)(shu)(shu)(shu)材(cai)料,它(ta)是以(yi)(yi)一種金屬(shu)(shu)(shu)(shu)(shu)元素為(wei)主(zhu)要(yao)成分(fen),并加入其他金屬(shu)(shu)(shu)(shu)(shu)或(huo)非金屬(shu)(shu)(shu)(shu)(shu)元素而組成的合(he)金,習慣上稱為(wei)配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)合(he)金,主(zhu)要(yao)有鑄鐵(tie)(tie)(tie)、鑄鋼(gang)和配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)有色合(he)金。叉(cha)車配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)按造型(xing)材(cai)料的不同,又可分(fen)為(wei)兩大類:一類以(yi)(yi)天然(ran)礦(kuang)產砂(sha)石作為(wei)主(zhu)要(yao)造型(xing)材(cai)料,如熔模配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)、殼型(xing)配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)、負(fu)壓配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)、泥型(xing)配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)、實型(xing)配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)、陶瓷型(xing)配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)等(deng);一類以(yi)(yi)金屬(shu)(shu)(shu)(shu)(shu)作為(wei)主(zhu)要(yao)鑄型(xing)材(cai)料,如金屬(shu)(shu)(shu)(shu)(shu)型(xing)配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)、離心配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)、連續(xu)配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)、叉(cha)車配(pei)(pei)(pei)(pei)(pei)件(jian)(jian)鐵(tie)(tie)(tie)、低壓配(pei)(pei)(pei)(pei)(pei)重(zhong)(zhong)(zhong)(zhong)(zhong)鐵(tie)(tie)(tie)等(deng)。
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