Q235 steel plate welding problems, how to weld No. 45 steel and Q235

It should be a "T" joint, if the welding workload is large, it is recommended to use semi-automatic CO2 welding or automatic CO2 welding with corner welding trolley, if there are deformation control requirements, some process measures may be taken (fixture control and parameter identification).

Of course, if the welding workload is not much, there is no need to increase the equipment, just use the electrode arc welding. If it is a component subject to static load, use J422, if it is a component subject to dynamic load, choose J426 or J427 (depending on your on-site welding machine, J427 can only be welded by DC machine, and J426 can be welded by DC or AC machine).

In addition, there is a small problem, 10mm welding angle is relatively rare, because the weld size is too large, the welding workload is large, the welding consumables are also used more, and the deformation after welding is large. If there are some requirements for the force, we will generally make some grooves to make a partial penetration welding + fillet welding, and the welding leg size is 5-8mm.

AC and DC welding machines are OK, acid and alkaline electrodes are OK, and the two sides are welded alternately to prevent angular deformation.

Q235 should belong to mild steel and should use J422 welding rod.

If the requirements are high, it is better to use E506 and E507 electrodes.

The most conventional welding process can be operated by ordinary welders. It should be noted that the deformation is controlled, and temporary process support can be added to prevent deformation.

If the weld is relatively large and the speed is not good if you use manual welding. Use automatic welding, the weld is not long, and if it is not much, it will be long with manual CO2 automatic welding or submerged arc welding Here I admire Zihand this friend very much.

F51 duplex stainless steel.

Duplex stainless steel: F51 (2205.) s22053. 00cr22ni5mo3n)

Chemical Composition: Alloy C Mn Si P S Cr Ni Mo Fe

f51 2 1 21 23 margin n

Minimum value of the mechanical function of the alloy at room temperature of F51:

Alloy tensile strength rm n mm2 yield strength elongation a5 % Brinell hardness Hb

f51 620 450 25 290

Duplex stainless steel alloy 2205 is a compound stainless steel composed of 21 chromium, molybdenum and nickel-nitrogen alloys. It has high strength, outstanding impact toughness, and outstanding overall and localized resistance to stress corrosion.

Compared with 316L and 317L austenitic stainless steels, alloy 2205 has superior functions in terms of corrosion resistance and crevice corrosion, it has a high corrosion resistance, and compared with austenite, it has a lower coefficient of thermal expansion and higher thermal conductivity.

Compared to austenitic stainless steels, it has twice the compressive strength and is able to reduce its weight compared to 316L and 317L. This alloy is particularly suitable for -50?f/+600?

fTemperature range, even in the case of strict constraints (especially for welded constructions), it can be used for lower temperatures.

F51 Supply Specification: Negotiation and supply of round bars, bars, strips, pipes, valve seats, balls, flanges and forgings.

2205 rod plate tube.

Use 2205 electrodes.

2205 duplex stainless steel.

Duplex stainless steel composed of 21% chromium, molybdenum and nickel-nitrogen alloys. It has high strength, good impact toughness, and good overall and local resistance to stress corrosion. Duplex stainless steels have twice the yield strength of austenitic stainless steels, a feature that allows designers to reduce weight when designing products, giving this alloy an advantage over 316,317L.

This alloy is particularly suitable for temperatures ranging from -50°F to +600°F. This alloy can also be considered for applications beyond this temperature range, but there are some limitations, especially when applied to welded structures.

Duplex stainless steel has twice the compressive strength compared to austenitic stainless steel, and designers can reduce its weight compared to 316L and 317L. Alloy 2205 is particularly suitable for the -50°F +600°F temperature range and can also be used at lower temperatures in tightly restricted situations, especially for welded structures.

Chemical composition: C mn si p s cr ni austenite-ferrite type).

Duplex stainless steel applications :

Pressure vessels, high-pressure storage tanks, high-pressure pipes, heat exchangers (chemical processing industry).

Oil and gas pipelines, heat exchanger fittings.

Sewage treatment system.

Pulp and paper industry sorters, bleaching equipment, storage and handling systems.

Rotary shafts, press rolls, blades, impellers, etc. in high-strength and corrosion-resistant environments.

Cargo boxes for ships or trucks.

Food processing equipment.

Hello, ER50-6 welding wire or E4304 electrode for welding of pressure vessel 2205 and Q235 (the principle of electrode selection is: the selection of dissimilar steel electrodes is low or high).

If it is already quenched and tempered 45 steel, the welding is welded with dissimilar rigid electrodes.

In general, manual arc welding is used, and alkaline structural steel electrodes such as J507, J506, and J427 are used. If there are no special requirements, general J422 welding rods can also be used.

No. 45 steel is a high-quality carbon structure steel, the hardness is not high and easy to cut, and it is commonly used in the mold to make templates, pins, guide pillars, etc., but it must be heat treated.

On the basis of the principle of ordinary arc welding, argon arc welding technology uses argon to protect metal welding consumables, and melts the welding consumables into a liquid state on the welded substrate to form a molten pool through high current, so that the welded metal and the welding consumables achieve metallurgical combination.

No. 45 steel and Q235 are welded with ordinary J506 electrodes, and DC welding machines are reversed welded.

Yes, it can be welded. Because the process of welding is the process of melting or re-smelting, stainless steel and ordinary steel are both steel, so they can be welded.

Stainless steel and ordinary steel welding belong to dissimilar steel welding, according to different base metals to choose different welding consumables, but the welding consumables used must be austenitic stainless steel electrode welding wire, if argon arc is used, argon protection should be carried out.

When welding with stainless steel electrodes, use as little current as possible, reduce the wobble when transporting the bar, hammer the weld bead, relieve the stress, and keep the temperature of the workpiece as low as possible. In this way, welding does not need to be preheated, can be welded directly, and small diameter welding rods should be used as much as possible.

Summary. Dear, I'm glad to answer for you: Q235B with what electrode A:

Dear, hello, 1. The material of Q235B can be used with J422 welding rod. 2. J422 electrode is a common name, corresponding to the international standard grade E4303. It is an acid electrode, coating titanium-calcium type, j means structural steel electrode, 42 is the tensile strength of 42kg mm2 weld metal, main use:

It is used for welding low-carbon steel structures and low-alloy steels with low strength grades, and is generally used for welding steel structures and ordinary carbon steel pipes. The diameter of J422 electrode varies from to to, and it can be welded in all positions, AC and DC dual-purpose. It has excellent welding process performance and mechanical properties, stable arc, less spatter, easy slag removal, and beautiful weld forming.

3. J422 electrode is suitable for welding the more important low-carbon steel and low-alloy steel structures with low strength grades, as well as the corresponding levels of pressure vessels and pressure-bearing pipelines, such as Q235-A, B Mn2 and other steel grades.

Dear, I'm glad to answer for you: What welding rod is used for Q235B Answer: Dear, hello, 1. The material of Q235B can be used with J422 welding rod.

2. J422 welding rod is the general name of the general key, corresponding to the international standard grade E4303. It is an acid electrode, flux coating titanium calcium type, j means structural steel electrode, 42 is the tensile strength of high permeability 42kg mm2 weld metal, main use: used for welding low carbon steel structures and low alloy steel with low strength grade, generally used for welding steel structures and welding of ordinary carbon steel pipes.

The diameter of J422 electrode varies from to to, and it can be welded in all positions, AC and DC dual-purpose. It has excellent welding process performance and mechanical properties, stable arc, less spatter, easy slag removal, and beautiful weld forming. Manuscript 3 and J422 electrodes are suitable for welding the more important low-carbon steel and low-alloy steel structures with low strength grades and the corresponding levels of pressure vessels and pressure-bearing pipelines, such as Q235-A, B Mn2 and other steel grades.

Q235B steel plate production steel mill hot blast furnace welding what welding wire.

Dear, that's the material of Q235B, you can use J422 welding rod.

2. What kind of welding wire is used for welding.

J422 electrode.

Can't the second protection wire be welded?

Pro, it can also be recommended to use J422 electrode.

Why is it inefficient to use 422 to use a handlebar.

422 electrode is an ordinary low-carbon steel electrode, but it can not be used when welding cast iron, white steel, and other non-ferrous metals, 422 electrode application range is relatively wide, the lifting ruler is suitable for a three-plate and structural live electrode, the use is still relatively wide, in the daily work of the enterprise, 422 electrode still plays an important role, but it can not be used when there is noisy land metal and special steel!

Both are carbon leaky steels with good weldability, which can be welded. There is no problem with soldering together.

The strength mainly depends on the selection of welding consumables and the quality of welding

1. The basic principle of general welding consumables selection is to choose a compromise or low or high, that is, the strength of the welding consumables and the gold content (if there are alloy materials in the base metal, of course, there is no need to consider here) to select between the two base metals or according to the poor materials. In fact, carbon structural steel is usually enough for J422.

2. As for the welding quality, it must be controlled from 5 aspects.

1) Welding process: the correct process is the basic condition to ensure quality.

2) Welder technical level: special assessment pass (certificate), a certain amount of experience accumulation.

3) Welding equipment: The equipment must be qualified.

4) Materials: Welding rods, welding wires, shielding gas purity and other quality must be qualified.

5) Post-weld inspection: If it is indeed very important that the quality of the component needs to be guaranteed at any cost, then the weld should be inspected non-destructively to ensure that there are no welding defects.

The steel of Q355 and the steel of Q235 can be welded directly, because according to GB 50236, they are of the same category and group, and even dissimilar steels can be welded together. Use the common J422 (AC and DC dual-use) or J427 electrode (DC reverse connection). These two electrodes have the same strength level, which can meet the requirements of Q235, although the strength of Q355 is a little higher, but when welding with Q235, you can choose according to the lower side.

Dear, hello, I am glad to answer for you what electrode is used for Q235 and 304 welding, which is 304 white steel and 235 carbon steel welding, and 506 type electrode is used. In order to obtain a certain strength of the solder joint, it is possible to use a high current and a short time (strong condition, also known as a strong specification) or a small current and a long time (weak condition, also known as a weak specification). Whether the choice of strong or weak conditions depends on the properties of the metal, its thickness and the power of the welding machine used.

However, there is still an upper and lower limit for the current and time required for metals with different properties and thicknesses, beyond which a qualified nugget will not be formed. Q235 and 304 welding, need to be welded with 304 stainless steel. Q235 is low carbon steel, iron-carbon alloy, good welding performance, Q235 low carbon steel welding, using copper plated solid core low alloy welding wire welding, can not weld 304 stainless steel.

Q235 and 304 dissimilar material welding, should use 304 stainless steel wire welding, welding process according to 304 welding process, so that the weld can be fused better.