在軋機軋制型材的過程中，通常都會經歷粗軋和精軋兩個工序，其中一個采用連續軋制，另一個采用其他非連續軋制的一種組合軋制法，常用于合金鋼軋制或舊有設備的改造。 其中，型材半連續軋制法有兩種形式，一種是粗軋為連續軋制，精軋為橫列式軋機的穿梭軋制或活套軋制；另一種是粗軋為橫列式軋機采用穿梭軋制，精軋為連續軋制。 

      目(mu)前(qian)，一些小(xiao)型(xing)車間(jian)采用的復二重軋(ya)(ya)(ya)(ya)(ya)機(ji)的軋(ya)(ya)(ya)(ya)(ya)制(zhi)(zhi)方法就屬于(yu)一種(zhong)特(te)殊(shu)的半連(lian)續軋(ya)(ya)(ya)(ya)(ya)制(zhi)(zhi)方法，它是在(zai)前(qian)后兩(liang)機(ji)架間(jian)實(shi)行(xing)連(lian)軋(ya)(ya)(ya)(ya)(ya)，在(zai)相鄰(lin)兩(liang)組軋(ya)(ya)(ya)(ya)(ya)機(ji)之間(jian)用圍(wei)盤進行(xing)活套軋(ya)(ya)(ya)(ya)(ya)制(zhi)(zhi)精(jing)軋(ya)(ya)(ya)(ya)(ya)過程(cheng)為連(lian)續軋(ya)(ya)(ya)(ya)(ya)制(zhi)(zhi)時(shi)，軋(ya)(ya)(ya)(ya)(ya)制(zhi)(zhi)速度(du)不(bu)(bu)受(shou)限(xian)制(zhi)(zhi)，產(chan)(chan)量高，但(dan)軋(ya)(ya)(ya)(ya)(ya)機(ji)調整復雜，改(gai)變產(chan)(chan)品(pin)(pin)品(pin)(pin)種(zhong)困難，生產(chan)(chan)不(bu)(bu)靈活，適于(yu)簡單斷面(mian)型(xing)材(cai)的少(shao)品(pin)(pin)種(zhong)批量生產(chan)(chan)。而它的精(jing)軋(ya)(ya)(ya)(ya)(ya)過程(cheng)為橫(heng)列式軋(ya)(ya)(ya)(ya)(ya)機(ji)穿梭軋(ya)(ya)(ya)(ya)(ya)制(zhi)(zhi)或(huo)活套軋(ya)(ya)(ya)(ya)(ya)制(zhi)(zhi)時(shi)，改(gai)變軋(ya)(ya)(ya)(ya)(ya)制(zhi)(zhi)品(pin)(pin)種(zhong)方便，但(dan)軋(ya)(ya)(ya)(ya)(ya)制(zhi)(zhi)速度(du)低，產(chan)(chan)量也低，適于(yu)異形(xing)斷面(mian)型(xing)材(cai)的軋(ya)(ya)(ya)(ya)(ya)制(zhi)(zhi)和多品(pin)(pin)種(zhong)小(xiao)批量生產(chan)(chan)。這種(zhong)設備(bei)布置緊湊、調整方便、可采用多線軋(ya)(ya)(ya)(ya)(ya)制(zhi)(zhi)，產(chan)(chan)量較(jiao)高等優點。 除了連(lian)續和半連(lian)續式軋(ya)(ya)(ya)(ya)(ya)制(zhi)(zhi)之外，軋(ya)(ya)(ya)(ya)(ya)機(ji)還可以采用切分軋(ya)(ya)(ya)(ya)(ya)制(zhi)(zhi)工藝來進行(xing)生產(chan)(chan)，在(zai)條件相同時(shi)，這種(zhong)工藝可降低鋼坯(pi)的加熱溫(wen)度(du)40℃左(zuo)右，燃料減少(shao)20%，電耗(hao)可降低15%，總的生產(chan)(chan)費(fei)用可降低10—15%。由此證明，分切軋(ya)(ya)(ya)(ya)(ya)制(zhi)(zhi)是降低生產(chan)(chan)成(cheng)本的易行(xing)而有(you)效的措施。 

      與普通軋(ya)(ya)制(zhi)(zhi)(zhi)(zhi)相比，分切軋(ya)(ya)制(zhi)(zhi)(zhi)(zhi)的(de)(de)產品(pin)精度(du)可提高5%—6%，原因是切分后兩線同(tong)時(shi)咬入，橫(heng)斷面(mian)變化不(bu)大，且頭尾溫差小負(fu)荷均(jun)勻(yun)。此(ci)外，切分軋(ya)(ya)制(zhi)(zhi)(zhi)(zhi)只在后3個機(ji)(ji)架進(jin)行(xing)，其余均(jun)為(wei)微張力和無(wu)張力軋(ya)(ya)制(zhi)(zhi)(zhi)(zhi)。當軋(ya)(ya)機(ji)(ji)用同(tong)樣尺寸的(de)(de)坯料生產同(tong)樣規格(ge)(ge)產品(pin)的(de)(de)時(shi)候，只需軋(ya)(ya)制(zhi)(zhi)(zhi)(zhi)1/2的(de)(de)斷面(mian)，因而可減(jian)少軋(ya)(ya)制(zhi)(zhi)(zhi)(zhi)道次，同(tong)時(shi)還能實現雙線或多(duo)線軋(ya)(ya)制(zhi)(zhi)(zhi)(zhi)，使軋(ya)(ya)機(ji)(ji)的(de)(de)產量(liang)大幅度(du)提高，這在生產小規格(ge)(ge)的(de)(de)產品(pin)時(shi)尤為(wei)重要(yao)。