钨极/铈钨极/钨电极/铈钍钨极简介 铈钨极/钨棒/钨条/钨杆/钨针
铈钨电极
铈钨电极是在钨基中添加稀土氧化铈经过粉末冶金和压延磨抛工序制作而成的钨电极产品，是我国最早生产的无放射性钨电极产品，该产品的特点是在低电流条件下有着优良的起弧性能，维弧电流较小。因此，它常用于管道，不锈钢制品和细小精密部件的焊接。在低电流直流条件下或电极直径在2.0mm以下，铈钨电极是钍钨电极的首选替代品。铈钨电极在20世纪80年代早期就介绍了到美国，作为一种非放射性钨电极来替代钍钨。通常铈钨电极里面含有2%的氧化铈。众所周知，铈钨电极在低电压下，适合直流焊接，因为在低电压下容易起弧，在工作时比钍钨要低10%。用于管道焊接，铈钨电极是最流行的，也通常用来焊接细小部件。和纯钨电极相比，铈钨电极有更低的燃烧率或蒸发率。随着氧化铈含量的提高，这些优点也提高。铈具有最高的迁移率，因而在开始焊接的时候，焊接性能非常优良。随着时间推移，由于晶粒长大，迁移率会显著降低。然而在低电压下，寿命比钍钨电极更长。正是由于这些特性，通常有利于短周期焊接或者具体的焊接量，然后才能更换电极。高电流、电压焊接最好使用钍钨电极或者镧钨电极。铈钨电极（EWCe-2）成功用于直流或者交流电上，然而主要还是用于直流电焊接，因为在交流焊接时，容易劈裂。
编辑本段优点铈钨电极的优点是无辐射，熔化率低，使用寿命长。铈钨电极是在低电流焊接下最好的产品同时也用于其他低电流如微小的和复杂的零件的焊接。铈钨电极具有钨的性能以及这种电极的环境价值，铈钨电极头的颜色是灰色。
铈钨电极与钍钨电极相比有如下优点：钍钨电极有轻微的辐射，它们要在高电流情况下才能够运行。然而，铈钨电极是属于非辐射的焊接材料，并可以在低电流下运行。
铈钨电极可以代替钍钨电极。铈钨电极的另一个化学性质是，它们的阴极斑点小，压降，不燃烧，所以在氩弧焊接中是最广泛使用的。
编辑本段用途适用于直流电或交流电焊接，尤其在小电流下对有轨管道、细小精密零件的焊接效果最佳。主要应用于碳钢、不锈钢、硅铜、铜、青铜、钛等材料的焊接，但是有轻微的放射性污染。[1]
编辑本段规格从下表选择所需规格
型号 | 直径 | 长度 | 成分 | 焊接材料 |
WC20 | 0.5mm | 150mm/175mm | CeO2 余量：钨 | 碳钢 不锈钢 铜 铝 |
1.0mm | 150mm/175mm | |||
1.6mm | 150mm/175mm | |||
2.0mm | 150mm/175mm | |||
2.4mm | 150mm/175mm | |||
3.0mm | 150mm/175mm | |||
3.2mm | 150mm/175mm | |||
4.0mm | 150mm/175mm | |||
4.8mm | 150mm/175mm | |||
5.0mm | 150mm/175mm | |||
6.0mm | 150mm/175mm | |||
7.0mm | 150mm/175mm | |||
8.0mm | 150mm/175mm | |||
10.0mm | 150mm/175mm | |||
12.0mm | 150mm/175mm |
10只/塑料盒，长度是150mm或175mm,1000只每纸箱。
编辑本段牌号标准牌号 | 掺杂量% | 其他杂质量% | 电子逸出功 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
WC20 | 1.80-2.20 | <0.20 | 2.7-2.8 种类 ESAB 牌号 技术标准 熔敷金属力学性能 熔敷金属化学成分（％）
不锈钢用焊条 Z308铸铁焊条 符合 GB EZNi-1 说明:Z308是纯镍焊芯、强还原性石墨型药皮的铸铁焊条，施焊时，焊件可不预热，具有良好的抗裂性能和加工性能。镍价格昂贵，应该在其它焊条不能满足时才可选用。交直流两用。 用途:用于铸铁薄件及加工面的补焊，如发动机座、机床导轨、齿轮座等重要灰口铸铁件。 熔敷金属化学成分(%) 化学成分 C Mn Si S Ni Fe 其它元素总量 保证值 ≤2.00 ≤1.00 ≤2.50 ≤0.030 ≥90 ≤8 ≤1.00 参考电流(AC、DC+) 焊条直径(mm) φ2.5 φ3.2 φ4.0 φ5.0 焊接电流(A) 50~100 70~120 110~180 160~190 注意事项: 上海斯米克焊条 Category Trade- Equivalent to China Standard Characteristics & application Equivalent to AWS Hard-surfacing 硬 面 堆 焊 D 667 EDZCr-B-15 HRc≥48. Resistance to wear, gas corrosion and oxidation. Hardfacing of blast furnace hopper and cracker part. D 802 EDCoCr-A-03 HRc38-47. Resistance to heat, wear and corrosion. Hardfacing of high temperature part such as the edge of thermo-cutter. ECoCr-A D 812 EDCoCr-B-03 HRc45-50. Resistance to heat, wear and corrosion. Hardfacing of high temperature part such as internal-combustion engine valve. ECoCr-B D 822 HRc≥53. Resistance to Wear and heat, bad shock resistance. Hardfacing of rotating blade wheel of boiler. D 832 EDCoCr-C-03 HRc≥50. Wear and heat resistance. Hardfacing of high temperature part such as hot-rolling guided way. ECoCr-C D 842 EDCoCr-D-03 HRc28-38. Corrosion and thermo-fatigue resistance, work harding. Hardfacing of hot forging die. Cast iron 铸 铁 Z 308 EZNi Pure nickel, excellent general properties. Used to weld thin cast iron part and repair welding machined surface, such as guided way of machine tool. ENi-Cl Z 408 EZNiFe Iron nickel, high strength and excellent ductility. Repair welding of important gray cast iron and nodular cast iron, such as cylinder cap. ENiFe-Cl Z 508 EZNiCu-1 Copper nickel, good machinability and bad crack resistance. Repair welding of sand hole and gray cast iron machined surface subject to no load. ENiCu-B Copper alloys 铜 合 金 Cu 107 ECu Red copper, atmosphere and sea water corrosion and excellent electric conductivity. Welding of red copper such as electrical copper row. ECu Cu 207 ECuSi Silicon bronze, corrosion resistance and high strength. Welding of copper, silicon bronze and brass. ECuSi Cu 227 ECuSnB Tin phosphor bronze, corrosion resistance and high strength. Welding of copper, silicon bronze and brass. ECuSn-C Cu 237 ECuAl Aluminum bronze, wear and corrosion and high strength. Welding or surfacing of copper alloys. ECuAl-A2 Aluminum alloys 铝 合 金 Al 109 TAl Pure aluminum, excellent corrosion resistance and middle strength. Welding of pure aluminum. E1100 Al 209 TAlSi Silicon aluminum, good crack resistance and wide range of usage. Welding of aluminum alloys other than aluminum magnesium alloys. E4043 Al 309 TAMn Manganese aluminum, corrosion resistance and high strength. Welding of aluminum alloys. E3003 Nickel alloys 镍合金 Ni 102 ENi-1 Pure nickel. Welding and surfacing of nickel and nickel to steel. ENi-1 Ni 207 ENiCu-7 Copper nickel. Welding and surfacing of copper nickel and copper nickel to steel. ENiCu-7 Category 类 别 Trade 牌 号 Chemical composition 主要成份(%) Characteristics & application 特性和用途 Equivalent to AWS 相当AWS Hardfacing 硬 面 堆 焊 S 101 C3 Cr28 Ni4 HRc48-54. Resistance to wear, gas corrosion and oxidation. Hardfacing of bucket tooth and case pump. S 111 C1 Cr29 W5 HRc38-47. Resistance to wear and corrosion at high-temperature. Hardfacing of high temperature and pressure valve. ECoCr-A S 112 C1.5 Cr29 W8 HRc45-50. Resistance to wear and corrosion at high-temperature. Hardfacing of valve and hot-rolling pass. ECoCr-B S 113 C2.5 Cr30 W17 HRc≥55. Wear and heat resistance at high temperature, bad shock resistance. Hardfacing of screw charging carriage. S 114 C2.5 Cr30 W12 HRc≥53. Wear and heat resistance at high temperature, bad shock resistance. Hardfacing of three-cone bit. ECoCr-C Copper alloys 铜 合 金 S 201 Sn1 Si0.3Mn0.3 Good mechanical properties and crack resistance. Gas welding and argon arc welding of red copper. ERCu S 211 Si3 Mn1 Good mechanical properties. Argon arc welding of copper alloys and MIG brazing of steel. ERCuSi-Al S 212 Sn5 Cu Rem. Wear resistance. Argon arc welding of copper alloys and surfacing of steel. ERCuSn-A S 213 Sn8 Cu Rem. Wear resistance. Argon arc welding of copper alloys and surfacing of steel. ERCuSn-C S 214 Al7.5 Cu Rem. Wear and corrosion resistance. Argon arc welding of copper alloys and surfacing of steel. ERCuAl-A1 S 215 Al9 Cu Rem. Wear and corrosion resistance. Argon arc welding of copper alloys and surfacing of steel. ERCuAl-A2 S 221 Cu60 Sn1 Si0.3 Melting point is about 890℃. Gas welding and carbon arc welding of brass, also braze welding of copper, steel and cast iron. S 221F Cu60 Sn1 Si 0.3 S221 welding rod coated with flux. S 222 Cu58Sn0.9Si0.1 Melting point is about 880℃. Gas welding and carbon arc welding of brass, also braze welding of copper, steel and cast iron. RBCuZn-C S 222F Cu58Sn0.9Si0.1 S222 welding rod coated with flux. RBCuZn-C S 223 Cu59 Sn0.6 Melting point is about 900℃. Braze welding of copper, steel and cast iron. RBCuZn-A S 224 Cu62 Si0.5 Melting point is about 905℃. Gas welding and carbon arc welding of brass, also braze welding of copper, steel and cast iron. Copper 铜 合 金 S 225 Cu48 Ni10 Melting point is about 935℃ and high strength. Braze welding of steel, nickel and carbide alloys. RBCuZn-D S 225F Cu48 Ni10 S225 welding rod coated with flux. RBCuZn-D S 226 Cu60 Sn0.3 Melting point is about 900℃. Gas welding of brass, also braze welding of copper, steel and cast iron. S 227 Cu58Sn0.9Ni0.5 Melting point is about 880℃. Gas welding and carbon arc welding of brass, also braze welding of copper, steel and cast iron. RBCuZn-B S 229 Cu55 Ni6 Mn4 Melting point is about 920℃, high strength. Braze welding of steel, nickel and hard carbide. Aluminum alloys 铝 合 金 S 301 Al≥99.5 Good ductility and corrosion resistance. Gas welding and argon arc welding of pure aluminum. ER1100 S 311 Si5 Al Rem. Corrosion resistance, wide range of usage. Gas welding and argon arc welding of aluminum alloys other than high magnesium alloys. ER4043 S 321 Mn1.3 Al Rem. Good corrosion resistance, weldability and ductility. Gas welding and argon arc welding of aluminum alloys. S 331 Mg5 Mn0.4 Corrosion resistance and high strength. Argon arc welding of aluminum alloys. ER5183 斯米克钎焊料分别有：（铜锌钎焊料） ，（铜磷银基钎焊料），（铝基钎焊料），（锡铅钎焊料），（镍基钎焊料).简介如下： Category Trade-mark Specification Melting Chemical Application Equivalent Copper 铜锌 L103 Wire & rod 885-888 Cu54 Zn Rem. Brazing of copper, bronze and steel, subjected to low load. L104 Foil 890-930 Cu57 Mn2 Brazing of carbide cutting tool. Copper 铜磷 L201 Cast rod, wire & rod, powder 710-800 P7 Cu Rem. Brazing of copper and copper alloys. BCuP-2 L204 Cast rod, wire 640-815 P5 Ag15 Brazing of copper, copper alloys, silver and molybdenum etc. BCuP-5 L205 Cast rod, wire & rod, powder 640-800 P6 Ag5 Brazing of copper and copper alloys. BCuP-3 L207 Cast rod, wire & rod 640-770 P7 Ag5 Brazing of copper and copper alloys. BCuP-7 L209 Cast rod, wire 684-710 P7 Ag2 Brazing of copper and copper alloys. BCuP-6 Silver 银基 L302 Wire & rod 745-775 Ag25 Cu40 Brazing of copper, copper alloys, steel and stainless steel etc. L303 Wire & rod 660-725 Ag45 Cu30 Brazing of copper, copper alloys, steel and stainless steel etc. BAg-5 L303F Flux coated rod 660-725 Ag45 Cu30 L303 coated with flux, the same application as L303. BAg-5 L304 Foil 690-775 Ag50 Cu34 Brazing of copper, copper alloys and steel etc. BAg-6 L308 Wire & rod 779-780 Ag72 Cu Rem. Brazing of copper and nickel under vacuum or reducing protective atmosphere. BAg-8 L312 Wire & rod 595-605 Ag40.Cu.Zn.Cd Brazing of copper, copper alloys, steel and stainless steel etc. L313 Wire & rod 625-635 Ag50.Cu.Zn.Cd Brazing of copper, copper alloys, steel and stainless steel etc. BAg-1a L321 Wire & rod 丝 615-650 Ag56.Cu.Zn.Sn Brazing of copper, copper alloys, steel and stainless steel etc. BAg-7 L323 Wire & rod 665-755 Ag30.Cu.Zn.Sn Brazing of copper, copper alloys, steel and stainless steel etc. L325 Wire & rod 645-685 Ag45.Cu.Zn.Sn Brazing of copper, copper alloys, steel and stainless steel etc. BAg-36 L326 Wire & rod 650-720 Ag38.Cu.Zn.Sn Brazing of copper, copper alloys, steel and stainless steel etc. BAg-34 Aluminum base 铝基 L400 Cast rod, wire & rod 577-582 Si11.5 Brazing of aluminum and aluminum alloys. BAlSi-4 L401 Cast rod 525-535 Si5 Cu28 Brazing of aluminum and aluminum alloys. Tin lead 锡铅 L600 Wire & rod 183-185 Sn60 Sb≤0.8 Soldering of fusible metals and heat-treated part. 60Sn L601 Wire & rod 183-227 Sn18 Sb2 Soldering of copper, copper alloys and galvanized iron plain sheet. 18Sn L602 Wire & rod 183-256 Sn30 Sb2 Soldering of copper, brass, copper alloys and galvanized iron plain sheet. 30Sn L603 Wire & rod 183-235 Sn40 Sb2 Soldering of copper, copper alloys, steel and zinc parts. 40Sn L604 Wire & rod 183-222 Sn90 Sb≤0.15 Soldering of copper and steel for food and medicine field. 90Sn L605 Wire & rod 232-240 Ag5 Sn95 Soldering of copper and steel for electrical and food field. L608 Wire & rod 295-305 Sn5.5 Ag2.5 Soldering of copper, copper alloys, steel and stainless steel. Nickel base 镍基 L702 Powder 970-1000 Cr7 B3 Si4 Brazing of stainless steel under vacuum or protective atmosphere. BNi-2 Category Trade-mark Product name Characteristics & application Gas 气焊 CJ301 Copper gas welding flux Melting point is about 650℃, flux for gas welding and brazing of copper and copper alloys. CJ401 Aluminum gas welding flux Melting point is about 560℃, flux for gas welding of aluminum and aluminum alloys. Silver 银钎焊 QJ101 Silver brazing flux Brazing flux of copper, copper alloys, steel and stainless steel within 550-750℃. QJ102 Silver brazing flux Brazing flux of copper, copper alloys, steel and stainless steel within 600-850℃. QJ102A Silver brazing flux Brazing flux of copper, copper alloys, steel and stainless steel within 600-850℃. Non agglomeration. QJ112 Silver brazing paste flux 膏状银钎焊熔剂 Brazing flux of copper, copper alloys, steel and stainless steel within 600-850℃. QJ103 Silver brazing flux Brazing flux of copper, copper alloys, steel and stainless steel within 550-750℃. Aluminum brazing 铝钎焊 QJ201 Aluminum brazing flux Brazing flux of aluminum and aluminum alloys within 450-620℃. QJ207 Aluminum brazing flux Brazing flux of aluminum and aluminum alloys within 560-620℃. Category Trade- Chemical Hardness Application Oxy- 氧 乙 炔 焰 喷 焊 F103 Cr10 B1.5 Si3 Ni Rem. HRc 25 Spray-fusing of cast iron parts,, such as die for glass, cylinder, and guide. F101 Cr10 B2.5 Si3 Ni Rem. HRc 45 Spray-fusing of parts resistance to wear and corrosion, such as valve, the rotator and piston of pump. F101Fe Cr10 B2.5 Si3 Fe10 Ni Rem. HRc 45 Spray-fusing of corrosion-resistant parts, such as axle and stigma. F102 Cr16 B4 Si4 Ni Rem. HRc 60 Spray-fusing of parts resistance to wear, corrosion and high temperature oxidation, such as die and piston. F102Fe Cr16 B4 Si4 Fe15 Ni Rem. HRc 60 Spray-fusing of corrosion-resistant parts, such as axle and cold die. F105 F102+50%WC HRc 60 Spray-fusing of parts resistance to grain-wear , such as guide plate, scraper and blade of fan. F105Fe F102Fe+35%WC HRc 60 Spray-fusing of parts resistance to grain-wear, such as guide plate, scraper and blade of fan. F108 F102+80%WC HRc 60 Spray-fusing of parts resistance to strong grain-wear and free machining, such as harrow teeth of dredger. F301 Cr5 B4 Si4 Ni30 Fe Rem. HRc 45 Spray-fusing of vulnerable parts of agricultural machinery and mining machinery, such as gear and axletree. Track iron powder 轨铁粉 Cr5 B1.5 Si3 Ni30 Fe Rem. HRc 28 Repair spray-fusing of defects such as scratch and concavity of railroad track. Oxy-acetylene flame spraying 氧 乙 炔 焰 喷 涂 F111 Cr5 B1.5 Si3 Ni30 Fe Rem. HB 150 Spraying of bearing and cutting parts etc. F113 Cr10 B1.5 Si3 Ni Rem. HB 250 Spray-fusing or spraying, such as roll, piston and axle of wear and corrosion resistance. F313 Cr15 B1.5 Fe Rem. HB 250 Spraying of dryer of papermaking and axle. F314 Cr18 Ni9 B1.5 Fe Rem. HB 250 Spraying of axle. F412 Sn10 P0.3 Cu Rem. HB 80 Spraying of axle and bearing. F512 复合Al5Ni95 Backing spray of transition layer between base and working layer. PTA hardfacing 等 离 子 弧 喷 焊 F221 Cr26 W5 B0.7 Co Rem. HRc 43 PTA hardfacing of sealing surface of high temperature and high pressure valve and the edge of hot shearing tool. F223 Cr21 W5 B1.5 Co Rem. HRc 40 PTA hardfacing of parts resistance to wear and corrosion at high temperature, such as valve under high temperature and high pressure, and blower. F321 Cr13 B1.5 Si1 Fe Rem. HRc 45 PTA hardfacing of corrosion-resistant parts under mid-temperature and mid-pressure, such as stop-plate etc. F322 Cr23 Ni13 Si5 B1 Fe Rem. HRc 40 PTA hardfacing of corrosion-resistant parts under mid-temperature and mid-pressure, such as valve base etc. F422 Sn10 P0.3 Cu Rem. HB 80 PTA hardfacing of axle and bearing etc.
|
