金屬軋制工藝學(xué)1軋制過程基本參數(shù)

1、n簡單軋制n變形區(qū)主要參數(shù)n實(shí)現(xiàn)軋制過程的條件n最大壓下量的計(jì)算及改善咬入的措施n三種典型的軋制情況1lLeL2bBeB3HheH110limniniilll 1dlnlxLxlllL2dlnbxBxbbBB3dlnhxHxhhHHlLbBHh11 1lnlnln0 hHHhLFLF0nFF0111222331nnnFFFFFFFF0123nnFF 0123nnFF 123n 0112112011nnnnHhhhhhHhh00nHhH00112100111111nnnnHhHhhhhhHHhh 121111n12300121nnnhhhhhHHhhH1d(s )dtdd1 d/dddxxzxx

2、xhhvtthhth22zzzvvvHhhHhlnlnzzHHvhhHhtHhv2 sin222zvvvv22zzvvvHhhHhHhR2HhvRHh2HhvRHhhvRH02()hFvRH FFh R 、0FF、lnlnxxlvlLlLtlLLvxxvvxvEBOBOEROEcosOER22HhhEB2 (1 cos )(1 cos )HhRD(1 cos )hD (1 cos )hD (1 cos )hD (1 cos )hD (1 cos )hD 2221 cos2sin2222hR（弧度）57.3()hR度ABE2BFR2(/2)ABRhR h ABR2ABBF BE22HhhBEFB

3、AsinlR2hOER24hlR h 222lROElR hAEO222AEAOOEsinxPPcosxTf Nf PxxPTtanfPTf PTTfPcosxTTsinxPPsincosPTsintancosTPTfPtanftanftanftanftanftanftantan222cos()sin()xxxRTPfPPcossin22xRfPPxxTPcos2xTTsin2xPPcossin22TPtan2TPtantan2TfP2222(22.4)(1.51.7)hHvvvcosHvvhvvxxv hv hhhBh v、 、V C 1 112 22hhhhB hvB h vVCtf p1

4、20 xxxXTPT120 xxxXTPTxxv hv htantan1()cos22xDTfpB2cos22xDTfpBsin22xDPpB120 xxxXTPTsin22cos1tanf(1)22(1)222242240拋物線123(1.05 0.0005 )fK K Kt1K2K3Kt鋼種鋼號(hào)K3碳素鋼萊氏體鋼珠光體馬氏體奧氏體含純鐵或萊氏體的奧氏體鋼純鐵體鋼含硫化物的奧氏體鋼220.10.072(1)3vfKvvKv潤滑條件K干摩擦條件用機(jī)油潤滑用紗錠油潤滑用煤油乳化液潤滑（含10%）用棉子油、棕櫚油或蓖麻油潤滑(1 cos )hD maxmax(1cos)hDmax22max11cos1 tan1 fmaxtanfmaxtantanfmax21(1)1hDf軋制條件摩擦系數(shù)最大咬入角 比值在有刻痕或堆焊的軋輥上熱軋鋼坯熱軋型鋼熱軋鋼板或扁鋼在一般光面軋輥上冷軋鋼板或帶鋼在鏡面軋輥上冷軋帶鋼軋輥同前，用蓖麻油棉籽油等潤滑hRmax21800(1)34mm1 0.3h1.51.5arctan0.3 1.5 16.725.05max800(1 cos25 )75mmhmaxh(1.51.7)1.575 3441mmarcco