三輥軋管機(jī)對(duì)穿孔毛管的壁厚糾偏能力分析
ANALYSIS OF PIERCED SHELL ECCENTRICITY REDUCTION BY THREE-ROLL PIPE MILL
-
摘要: 針對(duì)三輥軋管機(jī)的壁厚糾偏能力問(wèn)題,采用初等解析的方法,系統(tǒng)分析了軋制變形區(qū)對(duì)穿孔毛管壁厚偏心的糾正特點(diǎn),并通過(guò)現(xiàn)場(chǎng)實(shí)驗(yàn)研究了三輥軋管機(jī)對(duì)厚、中、薄規(guī)格穿孔毛管的壁厚偏心的糾正效果。研究結(jié)果表明,三輥軋管機(jī)對(duì)較厚壁毛管的壁厚糾偏效果明顯,而且其變形區(qū)的減徑段對(duì)糾偏起主要作用,而減壁區(qū)和輾軋區(qū)的糾偏能力很小,其糾正量?jī)H為毛管原壁厚偏心的1/9。Abstract: To determine the ability of the three-roll pipe mill for reducing the shell’s eccentricity,the roll deformation zones’characteristics in reducing eccentricity of the pierced shell were systematically analyzed with the elementary analytical method.Furthermore,experimental operations were conducted to investigate how the three-roll pipe mill reduces the eccentricity of pierced shells with heavy/medium/light W.T.s.The research result shows that the three-roll pipe mill provides the best eccentricity reducing effect on shells with rather heavy walls and that O.D.reducing section fo the roll deformation zone plays a major role in shell eccentricity reduction,while both W.T.reducing section and finishing section of the zone provide so little effect on shell eccentricity reduction that only one nineth reduction of the original shell W.T.can be obtained.
下載: