(1) Pharmaceutical skin types: the type is not a type of power supply has been provided: does not require the main features: the use of electrodes in some zirconia, rutile alkaline-type, these new series has not yet formed slag (2) drug skin types: titanium dioxide-based Power Supply: AC or DC main features: with large amounts of titanium dioxide, welding process with good performance, stable arc, easy arc again, splashing a small, shallow penetration, slag coverage good, easy slag removal, weld ripples special appearance, can be all-position welding, particularly appropriate sheet metal welding, but somewhat less weld ductility and crack resistance. With the skin in drug potassium, sodium and iron the amount of such changes, are divided into high-titanium potassium, high sodium and iron titanium and other titanium-based (3) drug skin types: titanium calcium type Power Supply: AC or DC main features: leather medicine containing more than 30% titanium dioxide, calcium, magnesium carbonate 20%, welding process with good performance, slag fluidity, penetration in general, arc stability, weld appearance, easy slag removal, suitable for all position welding, such as the J422 guilty of this type, is the most widely used carbon steel electrode in an electrode. (4) drug skin type: ilmenite-type Power Supply: AC or DC main features: leather medicine containing ilmenite 305, electrode melting fast, slag fluidity, deep penetration, easy slag removal, welding wave neat, stable arc-welding, fillet welding performance is better, a little sub-vertical Carbon Steel Electrode, the weld has good crack resistance (5) Pharmaceutical skin types: iron oxide-type Power Supply: AC or DC main features: skin contains large amounts of drugs more ferromanganese oxide and oxygen scavenger, deep penetration, melting fast, high productivity welding, arc stability , then arc convenient, Welding and Overhead welding more difficult, flying larger, better weld thermal cracking performance for plate welding. As the Arc force, suitable for field operation. If the drug in the skin by adding a certain amount of iron powder, iron powder titania type was (6) drug skin types: cellulose-type Power Supply: AC or DC main features: leather medicine containing more than 15% organic matter, 30% of titanium dioxide, good welding performance, stable arc, Arc force, melting deep, less slag, slag off easy. Can be used for vertical down welding, deep penetration welding or forming side welding. Li, Yang-welding process is good. Sheet structure for the fuel tank pipe, casing and other vehicles, welding. Stable arc with the skin of drug agent, binder content changes, are divided into high cellulose type (DC reverse), two types of high cellulose potassium (7) drug skin types: low hydrogen potassium type (low-sodium hydrogen ) Power Supply: AC or DC (direct current) main features: drug ingredients to the skin carbonate and fluorite-based. Electrode prior to use shall be subject to 300 ~ 400 â„ƒ baking. Short arc welding process in general, can be all-position welding. Weld crack resistance and good overall mechanical resistance force. Important for welding the welding structure. Stable arc under the skin of drug dose, the amount of iron powder and binder, divided into low-sodium, low hydrogen iron powder low hydrogen potassium type and type, etc. (8) Pharmaceutical skin types: graphite-type Power Supply: AC or DC main features: drug skin contains large amounts of graphite, usually used for cast iron or hardfacing electrodes. Low carbon steel welding core, the welding performance is poor, splash more, smoke more, less slag, suitable for flat welding. The use of non-ferrous metal welding core, they can improve their process performance, but the current is too large is not easy (9) Pharmaceutical skin types: of base-type Power Supply: DC Features: drug skin contains large amounts of chloride and fluoride, mainly for aluminum and aluminum alloy welding rod. Hygroscopicity strong, welded before drying. Drug skin low melting point, melting fast. DC power supply, poor Welding Electrodes, short arc corrosive slag after welding required hot water addition, for drugs containing large amounts of iron in the skin of the electrode, can be called the iron rod. Then, follow the main component of skin electrodes drugs, can be divided into iron titanium, iron titanium calcium type, ilmenite-type iron powder, iron oxide-based, iron powder low hydrogen type, which form the iron powder electrode series.
Laser sensor for weld metal seal is one of the most advanced processing methods, mainly based on laser Welding Electrodes has the following characteristics: (1) high aspect ratio. Deep and narrow weld, weld bright and beautiful. (2) The minimum heat input. As the power density, melting fast, low heat input workpiece, welding speed, heat distortion, heat affected zone. (3) high compactness. Generated during welding, bath, stirring constantly, gas-prone, leading to generate non-porous weld penetration. High cooling rate after welding to weld and easy miniaturization, weld strength, high toughness and overall performance. (4) strong weld. High-temperature heat source and the absorption of non-metallic components have purified the full effect, reducing the impurities to change the size and its inclusion in the distribution in the bath, the electrode or the welding process without filler wire, melting the contaminated area is small, the weld strength, toughness at least equal or even exceed the parent metal. (5) precise control. Because the focal spot is small, the weld can be high-precision positioning, the beam is easy to transport and control, does not require frequent replacement torch, nozzle, significantly reducing downtime auxiliary time, high efficiency, light no inertia, but also in high speed emergency stop and re-initiation. Mobile technology with controlled beam welding can be complex components. (6) non-contact, atmospheric welding process. Because the energy from the laser, the workpiece is no physical contact, so there is no force applied to the workpiece. The other magnetic and air have no effect on the laser. (7) The average heat input low, high precision, can reduce the cost of reprocessing, the other, less expensive Copper Welding Electrode operation, which can reduce parts costs. (8) easy to automate, and fine positioning of the beam intensity can be effectively controlled.