Drug skin types: are not already required the type of power supply types: does not require the main features: zirconia, rutile and alkaline type in some of the electrode, these new slag system has yet to form a series. Drug skin type: titanium dioxide supply types: DC or AC main features: contain large amounts of titanium dioxide electrode process performance, stable arc, then arc convenient, splashing a very small penetration depth shallower, slag coverage, de- easy slag, weld ripples special appearance, can all welding electrodes, especially appropriate for sheet metal welding, weld plastic and less crack resistance. With drug skin changes in the amount of potassium, sodium and iron, is divided into the main features of the high titanium potassium type, high-titanium sodium and iron titanium (3) the type of drug skin: a lime-titania type of power: DC or AC : drug skin with titanium dioxide for more than 30 percent calcium, magnesium carbonate, 20%, the electrode process performance, good slag fluidity, and general penetration, arc stability, weld appearance and easy slag detachability, apply to the whole position welding, such as the J422 is guilty of this type is currently the most widely used as a welding rod used in the carbon steel electrode. Drug skin type: ilmenite type of power: DC or AC main features: drug skin containing ilmenite 305, electrode melting fast, good slag fluidity, penetration deep, easy slag detachability, solder wave neat. stable arc, welding, fillet welding process performance is better, lesser vertical welding weld has good crack resistance. Drug skin types: iron oxide type of power: DC or AC main features: drug skin contain large amounts of iron oxide and more the ferromanganese Deoxidizer, deep penetration, melting fast, high welding productivity, stable arc, and then cited convenient arc welding of overhead position welding is more difficult, splash larger weld thermal cracking performance is better, apply to plate welding. Arc force, suitable for field operation. Drug skin by adding a certain amount of iron is the type of iron titanium oxide. Drug skin types: cellulose type of power: DC or AC main features: drug skin containing more than 15 percent organic matter, about 30% titanium dioxide, good welding performance, stable arc, arc blowing force, penetration depth, slag slag detachability. Can be used for vertical down welding rod , forming welding deep penetration or one-side welding. Li, Yang welding process. Applicable to the welding of the sheet structure, fuel tank, pipeline, vehicle shell. Arc stabilization agent with the drug skin content of the binder, divided into high-cellulose sodium (DCRP), two types of high cellulose potassium.
First, improve the stability of the arc. Light electrode with drug-free skin is not easy to ignite the arc. Even if the ignition can not be stable combustion. Electrodes drug skin generally contains potassium, sodium, calcium and low ionization potential of the substance, which can improve the stability of the arc, to ensure that the Welding Supplies is ongoing. To protect the weld pool. Welding process, oxygen, nitrogen and water vapor in the air, immersed in the weld, the weld will bring adverse effects. Not only the formation of pores, but also reduce the weld mechanical properties and even lead to cracks. Electrode drug skin melting, resulting in a large number of gas enveloped the arc and weld pool will reduce the interaction of the molten metal and air. Weld cooling, the melting of drug skin formation of a layer of slag covering the weld surface to protect the weld metal and slow cooling, reducing the possibility of generating pores. To ensure that the weld deoxy to parathion impurities. Welding Accessories, but still it is inevitable that a small amount of oxygen into the molten bath, metal and alloy oxidation and burning of the alloying elements, reduce weld quality. Therefore, the need to add a reducing agent (such as manganese, silicon, titanium, aluminum, etc.) in the electrode drug skin into the molten pool oxide reduction. Four supplementary weld alloying elements. Due to the high temperature of the arc, the weld metal alloying elements will be evaporation burning, so that the mechanical properties of weld decreased. Therefore, we must join the appropriate alloying elements to the weld through drug skin, to make up for the burning of the alloying elements to ensure or improve the mechanical properties of the weld. Some alloy steel, but also by the skin of the drug to the weld penetrate the alloy close to the weld metal and base metal composition, mechanical properties to catch up with even more than the base metals. And improve welding productivity, reduce splashing. The electrode drugs leather droplet increase and reduce the role of splashing. Electrode was slightly lower than the melting point of drug skin welding the core of the solder joints, but welding the core in the central area of ??the arc, the higher temperature, the solder core is first melted, drug skin may cause delay in melting point. Formed in the electrode ends of a short segment of drug leather tube, and the role of Arc force, the droplet on the straight hitting the bath and make it conducive to the overhead position welding and vertical welding. In addition, the solder core coated with a drug leather, the arc heat is more concentrated. The same time, due to the reduction of metal loss caused by spatter, increase deposition coefficient, improved welding productivity. In addition, the amount of dust in the welding process will be reduced. Electrode using the instructions