軋制壓力計算

1、軋軋機機軋軋制制壓壓力力計計算算軋制壓力P等于平均單位壓力 與接觸面水平投影面積F之乘積.接觸面水平投影面積：F=（(B+b)/2）型鋼平均單位軋制壓力一般采用艾克隆德公式計算，其公式為：式中 表示外摩擦對單位軋制壓力的影響系數(shù)； 黏性系數(shù)； 平均變形系數(shù)；其中平均壓下量工作輥徑工作輥半徑孔件寬度水平投影面積mm2孔件高度h1=40D1=431.897R1=215.95B1=170F1=14870.482981101100.396 對于鑄鋼輥h2=35D2=414.316R2=207.16B2=114.5F2=12112.593761351350.396鑄鐵軋輥h3=26.5D3=461.36

2、5R3=230.68B3=145.5F3=10164.2096488880.396表示軋制速度；h4=46.7D4=461.576R4=230.79B4=104.39F4=12971.3128398.898.80.396這里 a 取0.8h5=36.39D5=434.69R5=217.35B5=116.5F5=9822.27104368680.396粗軋 t 取1110中軋 t 取1000精軋 t 取 850h6=39.5D6=424.425R6=212.21B6=81.25F6=9052.54151577770.396h7=24.75D7=440.395R7=220.2B7=86.5F7=6

3、191.93411756.556.50.44軋件軋前平均厚度為：h8=25.25D8=433.782R8=216.89B8=64.71F8=5595.02426761.2561.250.44軋件軋后平均厚度為：h9=21.21D9=447.37R9=223.69B9=72.5F9=4725.46481543.543.50.44則平均壓下量：h10=23.1D10=440.795R10=220.4B10=52.19F10=4448.4729249.449.40.44h11=17.19D11=451.869R11=225.93B11=62F11=3558.174935350.44采用的軋件材質(zhì)為Q

4、235B，其含碳量Mn%=0.30.65=0.5h12=21D12=445.112R12=222.56B12=43.88F12=3619.20545641410.44h13=29.17D13=470R13=235B13=65F13=4507.33940814.7114.710.5h14=11D14=427.503R14=213.75B14=17F14=1988.0842554540.5將以上計算數(shù)據(jù)帶入艾克德隆公式有:h15=5D15=362.725R15=181.36B15=65.5F15=12425h16=0.5D16=362.796R16=181.4B16=66

5、.73F16=629.652963411.511.50.5則軋制壓力：h17=3.3D17=342.479R17=171.24B17=16.2F17=985.69060068.28.20.5。h18=6.81D18=331.099R18=165.55B18=9.72F18=435.15351339.399.390.5mhe)()2 . 16 . 1 (cchhhhRm+D-D=m2 1000()ccvh Rhhe= D+v) 0005. 005. 1 (ta-=m1=a8 . 0=a2/)01. 014( 1 . 0mmsNt-=hMPaMnCtK)4 . 1)(01. 014( 8 . 9+

6、-=2 ckhF B=1 ckhF B=cchhhD =-2 . 022. 014. 0%=CMPaK9 .102=MPap6 .150=120.5()*kkPBBR hp=+DPhRDtC%Mn%最高軋制速度vMpa P= *F (KN)92.940522600.0418735111100.2 0.559.6820.000015540.325232.3512965627285.150042450.04877986911100.2 0.559.6820.000015540.412286.382188962.59794761758.2278.186232230.0795

7、4616211100.2 0.559.6820.000015540.554388.476863864.43599117654.94103.8162186.80.05213026111100.2 0.559.6820.000015540.725805.853659562.80641404814.6888.9336166.80.07602114311100.2 0.559.6820.000015540.934995.970970564.23574784630.9491.555411450.07316903511100.2 0.559.6820.000015541.1951509.08578264.

8、07404142580.0373.82336133.50.16682879210000.2 0.582.320.0000141.5051664.48169596.08053647594.9274.00336117.750.18512414110000.2 0.582.320.0000141.8872371.87849197.59877289546.0768.87931104.750.21994302310000.2 0.582.320.0000142.3443082.636643100.4783587474.8171.3525292.90.24232696210000.2 0.582.320.

9、0000142.9014456.268318102.3458615455.2862.3202584.40.27542012810000.2 0.582.320.0000143.4175046.168432105.0826887373.9068.36429760.30169025510000.2 0.582.320.0000144.2017557.852047107.2928736388.3182.7946355.710.5606121058500.2 0.5113.190.00001195.95517700.30495176.9744015797.6848.4898668.710.372462

10、3468500.2 0.5113.190.000009527.0529953.441742155.4790631309.1130.11333660.2741009418500.2 0.5113.190.000009529.7088858.793469144.3229377179.279.52360223.50.2986758228500.2 0.5113.190.00000773510.538534.768663147.082850292.6123.7716319.70.7643301168500.2 0.5113.190.00000773512.1129225.83029200.103373

11、4197.2433.5766617.591.0624973278500.2 0.5113.190.00000773514.555356.631234.3371998101.97R hD()cchh+)()2 . 16 . 1 (cchhhhRm+D-D=mM PaM nCtK)4 . 1)(01. 014( 8 . 9+-=2/)01. 014( 1 . 0mmsNt-=h2 1000()ccvh Rhhe= D+P按軋制壓力確定軋制力矩：在簡單軋制情況下，轉(zhuǎn)動兩個軋輥所需的力矩M=2Pl=2PSQRT(R*h)根據(jù)對于R/h25條件下的分析，得到軋制軟鋼時的力臂系數(shù)為=0.78+0.017R

12、/h-0.163SQRT（R/h）根據(jù)實驗數(shù)據(jù)得到范圍更寬的力臂系數(shù)計算式，即對R/h100,力臂系數(shù)為=0.39+0.295EXP(-0.193R/h)決定于軋制速度的系數(shù)C R/h軋制力矩M(n*m)11.9631681820.58499100552.499511.5345037040.6041778013.79412.621392045 0.56065557419.328712.335910931 0.57058696517.1265213.196250.54292460928.9224512.756006494 0.55625259079.7124213.897300885 0.52446646068.400813.541077551 0.53346943115.8515.142183908 0.49779232559.9551914.461487854 0.51155333236.1785216.455271429 0.47560222164.6660915.428195122 0.49251426149.41443115.9