carbon steel welding rod

how to distinguish between carbon steel and stainless steel welding electrodes 1 If it is a standard grade , regular manufacturers should be numbered . Structural steel welding heat-resistant steel electrode old standard J R austenitic stainless steel electrode A starts and so on. 2 see rust stainless steel , bright degree . 3 Look hardness , stainless steel plate electrode in planning, Carbon Steel Electrodes first wear. var addthis_config = {"data_track_addressbar":true};

Carbon steel electrode ( the deposited metal tensile strength that is less than or equal 500MPa 50kgf/mm2) Flux Cored Welding Wire steel and low-strength low-alloy steel welding .Select the rod , it is usually based on the steel chemical composition, mechanical properties , crack resistance requirements, and must take into account the shape of welded structures ,Working conditions, stress condition and welding equipment performance and other factors . When necessary , to carry out welding tests to determine the process measures , and indeedBe selected electrode. Usually requires good plasticity , impact toughness, crack resistance , use low -hydrogen electrodes . There are special requirements for welding positionMay use the appropriate special electrode , to improve the welding efficiency , the choice of iron powder electrode and so on. Welding current specification proposed , is a parameterReference value , the workpiece , such as preheating , comparable to the normal current is reduced to 15% , the use of DC, the ratio of exchange can be reduced 10-15% . For low hydrogen type ,Iron welding rod , welding rod must be 350 or more before baking , as possible with the drying with the use of the principle of how much bake much , otherwise it willProduce welding defects ( such as pores , slag , cracks , process performance deterioration , etc. ) . Cellulose type electrode , should be strictly in accordance with the instructions provided bakeBaking baking temperature , the temperature is too high , it will burn off the cellulose coating , destruction electrode inherent process performance. When using low hydrogen type electrode, Welders should be living in the windward position , strengthen exhaust, welding fumes prevent harm to the body . For low hydrogen type electrode baking times as possible without its More than twice to prevent drug skin brittle , shedding var addthis_config = {"data_track_addressbar":true};

Carbon steel electrode ( the deposited metal tensile strength that is less than or equal 500MPa 50kgf/mm2) for Cast Iron Welding Rodsteel and low-strength low-alloy steel welding .For low-hydrogen , iron powder type electrode , before welding electrodes must be above 350 ℃ baking , as far as possible to do with the use of baking , bake with how much of the originalThen , otherwise it will produce welding defects ( such as pores , slag , cracks, deterioration of process performance , etc. ) . Cellulose type electrode , should be strictly supposedlyMing proviso baking baking temperature , the temperature is too high , it will burn off the coating of cellulose destruction inherent in welding process performance .The use of low hydrogen type electrode , the welder should live upwind strengthen exhaust, welding fumes prevent harm to the body . For low hydrogen type electrode baking times its not more than twice as much as possible , to prevent drug skin brittle and fall off var addthis_config = {"data_track_addressbar":true};

Select electrodes based on the steel chemical composition, mechanical properties , crack resistance requirements , taking into account the welded structure, plate thickness , workingCondition , the force , a comprehensive analysis of welding performanceandotherfactors.Ifnecessary,do the welding test , develop appropriate technical measures , and then determine the choice ofElectrode.⒈ carbon steel welding is generally used with corresponding strength grade of steel rod , taking into account the complex structure , plate, stiffness, dynamic load, Weldability poor , generally used in good plasticity , impact toughness, crack resistance good low hydrogen type electrode . There are special requirements for the welding position , theUsing the corresponding specific electrode , such as vertical down welding , welding , etc. bottoming . Can be used to improve the welding efficiency iron powder type electrode .⒉ the weld cooling speed, strength increased, weld cracks easily , and then you can use a low strength than the base metal of the electrode ; carboSteel and low alloy steel welding between dissimilar , generally used with low intensity level corresponding welding of steel and low alloy steel factors to consider ,To use low hydrogen type is appropriate.⒊ for welding of carbon steel , high Cast Iron Electrodes content of the steel , increasing the weld cracking tendency , generally used in low hydrogen type electrode and the use of pre-Heat, cold and other methods , and slow to adapt to the welding process and other measures.⒋ steel weldability is poor , generally the higher Aluminium Welding Rods content , the workpiece Heavy , complex structure, easy to weld cracking , when the multi- cast alloy elements, It is more prominent. Generally used in low hydrogen type electrode and taking preheating, slow cooling methods such as welding , etc. and the corresponding measures .⒌ To ensure the quality of welding , weld the workpiece should be clean , not allowed to have oil, rust , moisture, paint and dirt, etc. , the use of low-Hydrogen type electrode is particularly important.⒍ for low hydrogen electrodes , welding electrodes shall be 350 ℃ baking 1h, and with the drying with the use , or easy to produce pores, slag , cracks and other defectsCellulose electrodes generally do not need baking , if wet, before welding according to the instructions specified temperature baking , but the temperature is too high will destroy electrode welding processEnergy .⒎ welding current specified in the instructions as a reference value , the actual operation should be specific to master, such as workpiece preheating, 5% lower than the normal current ~15% ; vertical and overhead welding welding welding current is small than the level of 10% to 15% ; comparable AC DC when reduced by 10 percent. When using the DC welder , NoteItalian manual provides welding class character , or affect the welding process.⒏ for low hydrogen type electrode generally not repeated baking , to prevent drug skin crisp , shedding var addthis_config = {"data_track_addressbar":true};