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电阻与电功率是二件事，但对同一电器，在使用同一电压的情况下，电器设备的电器
绕组的电阻值越小，该电器设备的使用功率越大。如电灯炮，同一使用电压，100W灯泡电阻值比25W灯泡电阻值小。
由于硅碳棒使用温度高，有良好的化学稳定性，如果与自动化供电系统配套，即可得到精确的恒定温度，又可根据生产工艺的实际需要按曲线自动调温。硅碳棒是以高纯度绿色硅化硅为主要原料，经2200摄氏度高温再结晶制成的非金属发热体，正常使用温度可达1450度。在空气中使用，不需要加任何保护气氛，适用于各种电炉电窑。
硅碳棒温度越高寿命越短。特别是在炉膛温度超过1600℃以后，氧化速度加快，硅碳棒的使用寿命变短，所以请尽量不要让硅碳棒表面温度过高，即有必要缩小炉膛温度与硅碳棒温度之差。
表面负荷表面负荷密度指棒的发热部单位表面积所允许承载的额定功率。 表面负荷密度=额定功率（W）/ 发热部表面积（cm2）实践证明：负荷密度大则发热体表面温度与炉膛温度之差也大。负荷密度大则棒体表面温度高，电阻增长快， SIC棒的寿命短。因此，硅碳棒表面温度负荷密度、炉内气氛、温度与SIC棒老化速度成正比，与SIC棒的寿命成反比
硅碳棒规格功率及电阻范围 |
一、 粗端式硅碳棒规格、功率及电阻范围表 规格d/I/I1/D(mm)总长L(mm)电阻范围（Ω）每支元件在下列炉温/棒温时允许负荷量（W）800-900℃900-1000℃1000-1100℃1100-1200℃1200-1300℃1300-1400℃1350-1450℃8/180/60/143002.6-5.21261662082613173854238/180/150/144802.6-5.21261662082613173854238/150/150/144502.2-4.51051381732172643213538/180/180/145402.6-5.21261662082613173854238/200/150/145002.9-5.814018123129035342847012/150/200/205501.1-2.215820925932740048553012/200/200/206001.4-2.921127834643653464770712/250/200/206501.8-3.826334843245566780488414/180/150/224801.3-2.323829336545956368174414/150/250/226500.9-1.818524430338246856762014/200/250/227001.2-2.326432640551062575782714/250/250/227501.5-3.0309401506638781946103414/300/250/228001.8-3.53704886077669371135124114/400/350/2211002.3-4.7493651810102112501514165418/300/250/288001.1-2.247562778098312041458159318/300/350/2810001.1-2.247562778098312041458159318/400/250/289001.4-2.96338361040131116051944212418/500/350/2812001.8-3.679110451300163920062430265618/600/350/2813002.1-4.394912541559196624072915318718/400/400/2812001.4-2.96338361040131116051944212425/400/400/3812000.8-1.787911621444182122292700295225/600/500/3816001.3-2.6131917432167273233444051442725/800/450/3817001.7-3.4175823242889364244595401590325/500/400/4513000.6-1.2131917432167273233444051442730/1000/500/4520001.1-2.2263834854333546466888101885530/1200/500/4522001.3-2.63165415352006556802697211062640/1000/500/5620000.8-1.735204651578272918925108101181640/1500/500/5625001.3-2.65275697186661092713376162021771040/2400/700/5638002.0-4.0843911152138641748121399259202833240/2600/850/5643002.2-4.48792116181444418212229402700429516 二、等直径硅碳棒规格、功率及电阻范围表 规格d/I/I1(mm)总长L(mm)电阻范围（Ω）每支元件在下列炉温/棒温时允许负荷量（W）800-900℃900-1000℃1000-1100℃1100-1200℃1200-1300℃1300-1400℃1350-1450℃14/200/2507001.2-1.324632640551062575782714/250/2507501.5-3.0309401506638781946103414/300/2508001.8-3.53704886077669371135124114/400/35011002.3-4.7493651810102112501514165414/500/35012002.9-5.9616814990127615621892206816/200/2006000.9-1.928036246257970585594016/250/2006501.2-2.43504535787248811069117516/300/3009001.4-2.842054369386910581283141018/250/2507500.9-1.839552264981810011213132518/300/35010001.1-2.247562778098312041458159318/400/2509001.4-2.96338361040131116051944212418/500/35012001.8-3.679110451300163920062430265620/200/2006000.6-1.23524655787288911080118020/250/2507500.7-1.444058172291011141603176320/300/3009000.8-1.6527697866109213371620177020/400/35011001.1-2.27039291155145617832160236020/500/40013001.4-2.887911621444182122293206352520/600/35013001.5-3.0105513941733218526743239354125/300/40011000.6-1.36598711083136616722025221425/400/40012000.8-1.787911621444182122292700295225/500/40013001.1-2.2109914521806227727873376369025/600/50016001.3-2.6131917432167273233444051442725/800/45017001.7-3.4175823242889364244595401590325/900/40017001.9-3.8197726153250409750166076664125/1000/50020002.2-4.5219829043612455455746752738030/400/40012000.5-0.9105513941733218526753241354230/500/40013000.6-1.2131917432167273233414051442730/1000/50020001.1-2.2263834854333546466888101885530/1200/50022001.3-2.63165415352006556802697211062630/1300/50023001.4-2.934294531563371038695105321151130/1500/25020001.6-3.4395652286500819510032121521328230/1500/30021001.6-3.4395652286500819510032121521328230/1500/60027001.6-3.4395652286500819510032121521328230/2000/65033002.2-4.45275697186661092713376162021771035/400/40012000.4-0.8123016262021254931203779413135/500/40013000.5-1.0153820322527318639004724516435/1000/50020001.0-2.03076406550536372780094481032735/1200/50022001.1-2.236914878606476469360113381239235/1500/50025001.4-2.8461660977580955811700141721549140/400/40012000.3-0.7140718592311291435674321472340/1000/50020000.8-1.735204651578272918925108101181640/1500/50025001.3-2.65275697186661092713376162021771040/2000/65033001.7-3.47039930211561458117849216201771040/2400/70038002.0-4.0843911152138641748121399259202833240/2600/85043002.2-4.48792116181444418212229402700429516 三、槽型硅碳棒规格、电阻范围表 发热部直径D发热部长度L1冷端部长度L2中心距E连桥尺寸电阻范围直径D长L3142002504014542.4-4.6142503005014643.0-6.0143003506014743.6-7.0162002504016561.4-2.8162503005016661.8-3.6163003506016762.0-5.0183003506018782.0-5.0184004007018882.8-5.8185004507518933.6-7.2202503005020701.8-3.6203003506020802.0-5.0204004007020902.8-5.8254004007025951.6-3.42550045075251002.2-4.42560050080251052.6-5.23060040070301001.4-2.83070045075301051.6-3.23080050080301101.8-3.6 |
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