Can pure nickel cast iron electrode Z308 weld ductile iron

Pure nickel cast iron electrode Z308 is able to weld ductile iron, but the use strength after welding will be relatively low, and the crack resistance is lower than that of wewelding777 special cast iron electrode.

The application of wewelding777 special cast iron electrode is suitable for all-round cold welding process welding, which can weld almost all cast iron base metals, and it is easy to realize the dissimilar welding of cast iron and carbon steel, and solve the defects such as matrix fracture, crack, wear, and hole filling.

Technical Parameters of WeWelding 777 Special Cast Iron Electrode Tensile Strength: 70,000 psi (482 Nn square mm) Yield Strength: General 62,000 ( 427 Nn square mm) Hardness (hb):

185HB color matching with base metal: similar Power supply selection: AC and DC dual-purpose, DC reverse connection when DC.

Cracks will occur after welding.

1. Place the workpiece obliquely, so that the weld is in uphill welding or semi-vertical welding, so as to reduce the fusion ratio. (Don't forget to clean up before welding).

2. Preheat the bevel around the groove before welding, and the temperature is 200 250 to reduce the temperature difference between the weld and the workpiece.

3. The welding rod is cast 308, with a diameter of 4mm. Before welding, the welding rod should be baked for about 150 hours for 2h.

4. The welding rod is selected when the first layer of the weld is welded, and the current is 90 100A. For the last two layers of weld beads, D4mm electrodes are selected, and the current is 130 160A. DC positive connection.

5. Clean the slag after each layer is welded.

6. After welding, within 200mm around the welding area, heat to 300 350, keep warm for 30min, and cover it with asbestos powder to cool it slowly.

Dear, hello, I am glad to answer for you: Z308 cast iron electrode welding process A, dear, hello Preheat the welding area around the welding area before welding, and the temperature is 200 250 to narrow the temperature difference between the weld and the workpiece. Before welding, the welding rod should be baked for about 150 hours for 2h.

After welding, within 200 mm around the welding area, heat to 300 350, keep warm for 30 min, and cover it with asbestos powder to cool it slowly. Before welding, the temperature around the welding area is preheated at 200 250 to reduce the temperature difference between the weld and the workpiece. Before welding, the welding rod should be baked for about 150 hours for 2h.

After welding, within 200 mm around the welding area, heat to 300 350, keep warm for 30 min, and cover it with asbestos powder to cool it slowly. Thank you for your patience. If you are satisfied with my service, please give a thumbs up, and once again wish you all the best!

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Summary. Extended Information: Covered electrodeA metal strip that is filled at the joint of a welded workpiece is melted during gas or electric welding.

The material of the electrode is usually the same as that of the workpiece. According to different situations, there are different classifications of electrodes, and the electrodes classified by performance are special electrodes manufactured according to their special use performance, such as ultra-low hydrogen electrodes, low-dust and low-toxicity electrodes, vertical downward electrodes, lying electrodes, bottom electrodes, high-efficiency iron powder electrodes, moisture-proof electrodes, underwater electrodes, gravity electrodes, etc.

Hello, I am inquiring for you here, please wait a while, I will reply to you immediately Hello, I am happy to answer for you, Z208 electrode can weld ductile ink in cast iron Z208 is a steel core cast iron electrode, the workpiece needs to be preheated when welding, and the preheating temperature is 400-600 °C. As for the redness of the welding rod during wild destruction, it is caused by the excessive current of Qinjishan in welding.

Extended Information: Covered electrode: Melting of metal strips filled at the joints of welded workpieces during gas welding or teasing welding. The material pass of the electrode is often the same as the material of the workpiece.

According to different situations, there are different classifications of welding electrodes, and the welding rods classified by performance are special electrodes manufactured according to their special use performance, such as ultra-low hydrogen electrodes, low-dust and low-toxicity welding electrodes, vertical downward electrodes, lying electrodes, bottom electrodes, high-efficiency iron powder electrodes, moisture-proof electrodes, underwater electrodes, gravity electrodes, etc.

I hope the above is helpful to you If you are satisfied with me, please give me a thumbs up

Kiss Glad to answer for you: Copper-nickel alloy welding wire can weld ductile ironAnswer: Bess kiss Yes, it is very certain that ductile iron can be welded.

Ductile iron for welding crack resistance requirements are higher than lead holding, strength requirements are also higher than conventional gray cast iron after welding, this as long as the design of a reasonable groove, the use of cold welding cast iron welding art, material selection strength of high up to 40 kg, crack resistance Duan Hui Hao can excellent wewelding 777 cast iron electrode welding, cold welding process welding. Use process tip 1, it is necessary to do proper surface cleaning before welding, and the welded joint should be obliquely cut into a U-shaped groove. 2. Crack holes at both ends of the crack to prevent the expansion of the crack during the welding process.

3. When the repair angle is not good, you can choose the wewelding100 electrode cold slotting to form an effective U-shaped or V-shaped groove. 4. Weld with as little current as possible, medium arc length, and slightly inclined to the welding direction. 5. It is recommended that the weld bead should be short, thin and narrow transversely oscillating torch to fill the weld before stopping the arc welding, usually without heat treatment, allowing the parts to cool slowly.

Z308 electrode can be used with an AC machine.

This type is a graphite cast iron electrode, which is often used for welding in AC and DC dual-purpose welding machines. The Z308 electrode is suitable for use in the current environment of 80-120A, and is often used for the welding of gray cast iron.

Z308 welding precautions.

1.Before welding, the electrode must be baked for about 150 hours for 1h.

2.Stress in the patch zone can be eliminated by hammering the weld seam to avoid cracks.

No. Z 308, z is the (cast) iron electrode, the first letter of the cast word, representing the cast iron electrode.

Z308 is a pure nickel electrode and must be welded with a thyristor or inverter DC welder (excluding ZXG series silicon rectifier DC welder).

The output arc of this series of welding machines is stable, which can ensure excellent welding quality.

AC welding machine (and silicon rectifier ZXG series DC welding machine) shall not be used, the welding machine arc stability is poor, and the input voltage affects the welding parameters fluctuate greatly.

Can cast iron Z308 welding rod be used with an AC welding machine.

Can you use an AC welding machine for cast iron Z308 electrode Can you use an AC welding machine for cast iron Z308 electrode.

If the Z308 welded iron casting produces pores after welding, focus on checking whether the coating is damp, and then whether the parent body is immersed in oil for a long time, indicating whether the humidity is too large.

As for the welding method, as mentioned above, the current parameters, the control of the welding process are more important, and they have done their best, if it is not possible, you can choose the welding rod with better crack resistance Wewelding777 cast iron electrode welding, small current and small standard welding, compared with Z308, it has the advantage of a higher success rate.

If it is an old equipment, it may be caused by organic matter, and it is necessary to remove the oil before welding.

1. Turn two anti-crack holes with electric rotation at both ends of the crack. 2. Clean the surface of the weld and grind out the metallic luster. 3. The bevel is opened, and the bevel angle is 60-65 degrees. 4. Preheat 600-700 degrees before welding. 5. Welding. 6. Slow cooling after welding.

The electrode should be dried.

Preheat before welding.

Adopt a short arc. That's it!

It may be that the welding material contains moisture, or it may be that the protection effect is not ideal.

Main points: First of all, the weld should be cleaned, and there should be no oil stain and rust; In addition, the welding current should be small, and the welding rod current should not exceed 100A; Third, for short section welding, the welding length of each section of the weld should not exceed 2 cm each time; Fourth, hammer the weld bead with a pointed welding hammer, and continue to weld the rear after the temperature is reduced (when the hand can touch it); Fifth, dispersed welding should be used when the weld is long to prevent stress concentration.

If it is an old casting, it is best to use oxyacetylene flame to burn off the oil stain, and then weld after grinding out the metal luster.

Z308 is a pure nickel welding core, strong reducing graphite type coating cast iron electrode, weldment can not be preheated when welding, has good crack resistance and processing performance. Nickel is expensive and should be used only when other electrodes cannot be satisfied. AC and DC dual-use.

Precautions. 1.Before welding, the welding rod must be baked for about 150 hours.

2.Stress in the patch zone can be eliminated by hammering the weld seam to avoid cracks.

Hope, thank you!