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FAQ

What is the difference between A507 welding rod and J507?

The A507 electrode is austenitic stainless steel electrode, J507 is carbon steel electrode, both low hydrogen basic electrode coating, estimation of similar components, the core is not the same, one is a carbon steel, stainless steel.

E43XX welding electrodes are often used in welding of steel structures, of which 43 is indicated

According to the GB / T5117-1995 carbon electrode national standard:E marking carbon steel welding rod (low alloy steel welding rod, stainless steel welding rod, the same code name is E).43 marked fused metal tensile strength is greater than or equal to 420MPa (i.e. 43kgf / mm2).Third digit indicating welding position suitable for welding electrode.0 and 1 mean all position welding (flat welding, vertical welding, horizontal welding, overhead welding).2 for flat and horizontal fillet welding.4 means suitable for vertical down welding.Fourth digits indicate the kind of electrode material (acidity, basicity), welding polarity and so on.

What does the number in the welding rod mean?

The number in the welding rod represents the specification, model and content of the electrode

Is the electrode electrically conductive?

An electrode is a conductor. The electrode is metal cored coating called cores. The core is generally a certain length and diameter of the steel wire. When welding, the welding core has two functions: one is the conduction of the welding current, arc energy converted into heat, two cores melting as the formation of the weld filler metal and liquid base metal fusion.Electrode welding, welding core metal part of the weld metal. The chemical composition of cores, directly affect the quality of the welding seam. Therefore, the steel wire used as the core of the electrode has its brand and its composition separately. If used for automatic submerged arc welding, electroslag welding, gas welding, gas welding and other welding methods for the filler metal, known as the wire.The coating layer is coated on the surface of coating is the core. In the course of welding, the coating is decomposed and melted to form gas and slag, which play a role in mechanical protection, metallurgical treatment and technological performance improvement. Composition of coating material: Minerals (such as marble, fluorite etc.), iron alloy and metal powder (such as manganese, ferro titanium), organic matter (such as wood powder, starch), chemical products (such as titanium dioxide, water glass, etc.). For example, a light electrode without a coating is not easy to ignite the arc. Even if ignited, it can not burn steadily. In the electrode coating, usually contains potassium, sodium, calcium and other ionization potential of low substances, which can improve the stability of the arc, to ensure that the welding process continues.

What is the J422 electrode core material

Steel wire core is general, steel wire

What kind of steel bars are used for the two electrodes?

J422 welding rod is mainly used for welding low carbon steel structure and low strength low-alloy steel, such as A2, No. 20 steel, No. 35 steel, etc..J502 welding rod is mainly used for welding low strength carbon steel structure and alloy steel, such as A3, No. 45 steel, 16Mn and so on.J422 welding rod and J502 welding electrode are common terms, corresponding to international standard brands are E4303 and E5003 respectively. Is a kind of acid electrode, titanium calcium coating, J structural steel electrode, 42 and 50 respectively, the tensile strength of the weld metal (more than 420MPa and more than 500MPa), said 2 electrode for all position welding (welding, welding, overhead welding, horizontal welding).

Air conditioning copper pipe welding problems, how to weld well, and what electrode to use?

Is the use of copper wire, welding, brazing is the longest, with the copper wire, with borax flux do. The gas heating tube to cherry red, under the solder wire, a coating will flow into, good welding.

Welding Q345C steel plate with ordinary electrode?

Yes. Ordinary structural steel electrode can be used, but attention should be paid to the strength of the steel. Q345 steel corresponding welding rod should be 500MPa class, that is, E50 * * * or J50 * grade electrodes, such as E5003 (or J502), E5015 (J502) and so on.