Q:What type of welding rod is applied to Q345 steel plate?

Q345 steel plate is welded with J506 or J507 electrode.J506 is a low hydrogen potassium electrode, it is a kind of basic electrode, welding steel structure and the typical Q235, Q245R, Q345 steel, the tensile strength of E4315 is much larger relative to the common electrode, so the general welding force or by welding steel structure of dynamic load.J506 welding rod diameter ranging from 2.5mm to 6.0mm, can be carried out in all position welding, welding using alternative welding machine.The weld formation after J506 welding is more difficult than that of the acid welding rod. If an electrode is used on the cover of the steel structure, the acid electrode can be used.J507 is a low sodium hydrogen electrode, it is a kind of basic electrode, can be Q235, Q245R, Q345 typical welding structure steel in steel, the tensile strength of E4315 is much larger compared to the common electrode, so the general welding force or under dynamic load of steel structure.J507 welding rod diameter ranging from 2.5mm to 6.0mm, can be carried out in all position welding, welding using DC welder, polarity reversal. Of course, if there is only AC welder in the field, AC welder can be used, but the current needs to be switched on.The weld formation after J507 welding is more difficult than that of the acid welding rod. If an electrode is used on the cover of the steel structure, the acid electrode can be used.

Q:What's the difference between 506 electrode and 502 electrode?

The biggest difference between J506 and J502 is the ingredient in the skin:506 is low hydrogen potassium type, baking temperature 350~380, high requirements can be used 506, welding seam for low hydrogen type, crack resistance is good. But the process requires high oil, rust, water must be removed,502 is the calcium titanium type, not baking. Beautiful shaping and easy to remove slag.

Q:What kind of welding rod does Q345 steel use?

First of all, Q345 is divided according to yield strength. Q is the code of yield. It is equivalent to the previous 16Mn. The hardness of Q345 is below HB180. The hardness of the oil after the cold is at most 200HB or so, because he is low alloy, carbon content of about 0.16, so the basic quenching has little effect.Speaking of the impact area and the hardness after welding, the carbon content of Q345 is greater than 0.45%, so the welding process is strict, and the welding of Q345 steel in the cooling process, the heat affected zone formed more easily quenched martensite, so the weld hardness increases, the ductility decreases. As a result, cracks occur after welding

Q:This question has been answered, but the answer is not consistent with the proposed problem, I want to ask is how long after the use of suitable electrode, can not damage the electrode holder, but also save, thank you!

After we calculate the utilization rate, the remaining 50mm of the welding rod is welded

Q:What are the requirements of steel structure for electrode?

Usually 426 is ok.

Q: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).

Q:What's the difference between 507 and 422 electrodes?

The main difference is the intensity, a difference; another 507 are low hydrogen alkaline electrode, DC reverse; 422 is an acid welding rod, AC and DC dual-use

Q:Stainless steel 2025 is how material, with what electrode?

Carbon steel, stainless steel welding rod

Q:400A DC inverter welding machine, suitable for long welding electrode

Mainly depends on your welding machine load rate of 45%, then the current is about 180A, 60% of the current is about 240A, with experience that is 3.2

Q:What kind of welding rod does 1Cr13 steel plate use?

Usually in 1Cr13 and other dissimilar materials welding, choose A302 welding rod, welding should not preheat and after heat, but after welding, it is best to increase heat treatment (of course, no heat treatment is also no problem)It is better to use G202 or G207 if welding of 1Cr13 same kind of material, preheating before welding, heat after welding and heat treatment