供应镍铬电热丝Cr20ni35 0.5mm

详情描述：

镍铬电热圆丝   镍铬电热圆丝简介镍铬、镍铬铁电阻电热合金具有较高的电阻率，表面抗氧化性好，并且在高温下有较高的强度，有良好的加工性能及可焊性，可广泛用于治金、家用电器、机械制造业等做发热元件和电器行业做电阻材料。规    格：元丝Φ0.03㎜--Φ10㎜、扁带厚度0.04--8㎜×宽度2--300㎜、棒材Φ10㎜—Φ200㎜   铁铬铝合金电热丝的优缺点铁铬铝合金电热丝的优点是运行温度高实验得出铁铬铝合金电热丝的高运行温度可到1400℃。铁铬铝合金电热丝的使用寿命长、电阻率高、表面复合高并有较好的抗氧化性。铁铬铝合金电热丝的缺点是在高温环境下的强度较低随着温度的升高铁铬铝合金电热丝的可塑性会增强也就是说铁铬铝合金电热丝在高温中容易发生变形且变形后不易修复。      4、镍铬合金电热丝的优缺点镍铬合金电热丝的优点是在高温环境中的强度高长期高温运行不易变形不易改变结构且镍铬合金电热丝的常温塑性好变形后的修复较为简单。此外镍铬合金电热丝的辐射率高、不带磁性、耐腐蚀能力好、使用寿命长。镍铬合金电热丝的缺点是运行温度不能达到上一种电热丝的水平。镍铬合金电热丝的制造需要使用镍这种金属的价格高于铁、铬、铝的价格因此镍铬合金电热丝的制造成本较高不利于成本控制。   本厂生产的电炉丝加工前均经过软态处理，具有较好的塑性和韧性，可以直接加工成螺旋型、波纹型、Z字型、立绕带型；本厂加工的电炉丝采用无芯绕制成型，大限度的防止了电热丝表面的擦伤，具有成型标准、螺距均匀、表面保护好不损伤等特点。   主要性能：      Cr20Ni80Cr30Ni70Cr15Ni60Cr20Ni35Cr20Ni30主要化学成份％Ni余量余量55.0~61.034.0~37.030.0~34.0Cr20.0~23.028.0~31.015.0~18.018.0~21.018.0~21.0Fe≤1.0≤1.0余量余量余量元件高使用温度℃12001250115011001100熔点℃≈14001380139013901390密度g/cm38.408.108.207.907.90电阻率μΩ.m,20℃1.09±0.051.18±0.051.12±0.051.04±0.051.06±0.05延伸率%≥20≥20≥20≥20≥20比热J/g.℃0.4400.4610.4940.5000.500导热系数 KJ/m.h.℃60.345.245.243.843.8线胀系数α×10-6/℃(20～1000℃)18.017.017.019.019.0显微组织奥氏体奥氏体奥氏体奥氏体奥氏体磁性非磁性非磁性非磁性弱磁性弱磁性      径mm   截面积mm2   每米表面积cm2/mCr20Ni80Cr15Ni60Cr30Ni70每米电阻Ω/m每? 欧表面积cm2/Ω每米重量g/m每米电阻Ω/m每? 欧表面积cm2/Ω每米重量g/m每米电阻Ω/m每? 欧表面积cm2/Ω每米重量g/m10.078.503140.0139226006520.0140220006440.015636209009.5070.852980.0154194005880.0157190005810.0167574178009.0063.592830.0171166005280.0175162005220.0186515152008.5056.722670.0192139004710.0196136204650.0208459128008.0050.302510.0217116004170.0221114004120.0235407106807.5044.202360.024795503670.025193803610.026735888307.0038.502200.028377603190.028876203160.030631271806.5033.202040.032862202750.033561002720.035526957406.0029.301880.038648902350.039348002320.041722945005.5023.801730.045937701970.046737001950.049619334805.0019.601570.055528301630.056527801610.060215826004.5015.901410.068520601320.069820301300.074212819004.0012.601260.086714501040.088314201030.093710213403.509.6201100.11397179.70.11595378.90.12377.98943.007.07094.20.15461158.70.15760058.00.16757.35642.806.16088.00.17749751.10.18048850.50.19249.94582.504.91078.50.22235440.70.22634740.30.2439.83272.203.80069.10.28724131.60.29223731.20.31130.82222.003.14062.80.34718126.10.35317825.80.37625.41671.802.54056.50.42813221.10.43613020.90.46520.61211.602.01050.30.54292.716.70.55291.016.50.58716.385.61.401.54044.00.70862.112.80.72161.012.60.76612.557.41.201.13037.70.96439.19.390.98138.49.271.049.1536.21.000.78531.41.3922.66.521.4122.26.441.506.3620.90.900.63628.31.7116.55.281.7416.25.221.865.1515.20.800.50325.12.1711.64.172.2111.44.122.354.0710.70.700.38522.02.837.763.192.887.603.163.063.127.190.650.33220.43.286.222.753.356.102.723.552.695.750.600.28318.83.864.892.353.934.802.324.172.294.510.550.23817.34.593.771.974.673.701.954.961.933.490.500.19615.75.552.831.635.652.781.616.021.592.610.450.15914.16.852.061.326.982.031.307.421.291.900.400.12612.68.671.451.048.831.421.039.371.021.340.350.096211.011.30.9710.79911.50.9530.78912.30.7790.8940.300.07079.4215.40.6110.58715.70.6000.58016.70.5730.5640.270.05728.4719.10.4400.47519.40.4370.46920.60.4630.7410.250.04917.8522.20.3540.40722.60.3470.40324.00.3980.3270.220.03806.9128.70.2410.31629.20.2370.31231.10.3080.2220.200.03146.2834.70.1810.26135.30.1780.25837.60.2540.167