What kind of electrode is used for cast iron welding? What type of electrode is used for welding cas

Welding cast iron is mainly a problem in three aspects: carbon control, stress relieving, and structural adjustment. You can choose some welding materials, such as wewelding777 and other imported welding materials.

The crack resistance is very good. In addition, the sewing process can be adopted in the structure to increase the stability of the welding effect.

Characteristics of WeWelding 777 Special Cast Iron Electrodes.

Wewelding777 has a special coating effect, the welding process can produce a soft arc similar to the pulse, the thermal impact on all kinds of cast iron base metal is very small, the special pulse arc can remove all kinds of impurities on the surface of the cast iron, and even for the welding of oil stains and long-term oil immersion castings also has good permeability without porosity or inclusion, and the hardness of the heat affected zone will not become very high, and the forming weld welded by the cold welding process has very excellent crack resistance, Able to cope with all kinds of harsh base metal environments.

Application of WeWelding 777 Special Cast Iron Electrode.

It is suitable for all-round cold welding process welding, can weld almost all cast iron base metals, and is easy to realize the dissimilar welding of cast iron and carbon steel, solve the defects such as matrix fracture, cracks, wear, and hole filling, and can be machined after welding, and is used in various types of iron castings such as engine housing, cylinder head, machine base, and gear teeth of casting gears on many occasions.

Technical parameters of wewelding777 special cast iron electrode.

Tensile Strength: 70,000 psi (482 Nv2 mm²) Yield Strength: Typically 62,000 (427 Nn mm²) Hardness (Hb): 185HB

Color matching with the base metal: similar Power supply selection: AC and DC dual-use, DC reverse connection when DC.

Which electrode is better for cast iron welding, see how the old welder's experiment is.

J506 and 308 are commonly used in welding cast iron in China, but the success rate has limitations, and the thermal welding process is generally used, and the welding is carried out after the preheating of 650 degrees, and the post-welding insulation treatment can greatly improve the success rate. If it is a more important iron casting, especially for crack repair or fracture repair of important iron castings, it is still recommended to use wewelding777 special cast iron electrode welding.

Cast Iron Welding Process:

1. Select the casting method according to the cast iron welding product diagram and technical conditions, the batch size of the product and the date it is needed, and the actual conditions of the factory.

2. Draw the machining allowance and process symbols such as non-cast holes and grooves on each view of cast iron welding.

3. Cast iron welding draws the position, shape, size and quantity of the gating system and riser, and the shape, position and size of the same cast sample.

4. Cast iron welding marks the starting slope of the wall perpendicular to the parting surface.

5. Mark the casting position and parting surface of cast iron welding.

6. Draw the shape of the sand core, the sand core block line (including the negative number of the core), the core clearance, the compression ring and the anti-pressure ring, and the sand accumulation groove, mark the relevant size and the sand core negative, and design the core bone shape, size and sand consumption if necessary.

7. Analyze the structural manufacturability of castings, judge the defect tendency, put forward structural improvement suggestions and determine the principle of casting iron welding and solidification.

8. The negative parting number of the pattern, the shape of the parting surface and the loose block, the size and position of the reverse deformation, the shape, the negative margin of the non-processed wall thickness, the position and size of the process correction, etc.

9. The position, shape, size and quantity of cold iron and cast bar, the fixed combination method and the size of the cold iron seam, etc.

The above content refers to Encyclopedia - Cast Iron Welding.

Which electrode is better for cast iron welding, see how the old welder's experiment is.

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Ordinary stress is not large, you can choose Z308 electrode, Z408 electrode, etc., for key important equipment, the force is relatively large, it is recommended to use the United States MG289 cast iron electrode welding can be used. MG289 welding rod (there are many fakes on the market, it is recommended to go to a regular company when buying).

Summary. Pro, if you choose the way of heat welding, then you can use J506 carbon steel electrode. This kind of electrode should be preheated before welding, otherwise after welding, it is easy to have defects such as cold seams.

Pro, if you choose the way of heat welding, then you can use J506 carbon steel electrode. Before this kind of welding rod is welded, the mountain beam should be preheated first, otherwise after the welding, it is easy to have cold seams and other defects.

If you choose cold welding for welding, then you can use Viodin 777 cast iron electrode. The welding effect of this welding rod will be better, but before welding Chunqi, you need to cut the groove at the welding position, and then make a coarse hole to prevent cracking to prevent cracks from appearing during welding.

When choosing the welding rod, we also need to pay attention to the working strip of the welding strip. For example, the electrode needs to bear a certain load, and we need to choose the electrode with good impact toughness, such as titanium-calcium electrode, low-hydrogen electrode and other silver electrodes. If we weld electrodes at low temperatures, we can use electrodes with good low temperature properties.

Hello, when welding cast iron and ordinary steel plate, Xian Z308 (cast 308) nickel-based electrode should be used for welding. The heating temperature of gray cast iron should be about 600-650. After welding, it must be kept warm and cooled slowly to ensure the performance of the welded joint.