| Customization: | Available |
|---|---|
| Type: | Welding Wire |
| Material: | Low Alloy Steel |
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Pure nickel cast iron welding rod
SH.Z308
Description :
SH·Z308 is a cast iron electrode with pure nickel core and strong reducing graphite coating. It can be used for both AC and DC. When the arc is stable, the operation is convenient, the welding part can not be hot, it is a kind of welding rod with good comprehensive performance such as crack resistance, cutting ability and weld strength in the cold welding rod of cast iron, and it is widely used in the welding repair of thin parts and machining surfaces of cast iron.
Use:
It can be used for the welding of gray cast iron at room temperature or slightly preheated (to about 200ºC), such as the welding of thin cast iron and machining surface, cylinder head, engine seat, gear box and machine tool guide rail and other important gray cast iron. It is also suitable for welding mechanical parts made of cast iron.
Note:
1. The surface of the weldment should be kept clean and any defects must be carefully shoveled away. If there is oil or water infiltration inside the old casting, the gas torch or blowtorch should be used to burn it until the smoke is finished, and then the surface of the remaining black skin, rust and other impurities are removed.
2. The welding place must first open a 70-90 ° groove, and the bottom is a circular arc with a radius of not less than 5mm. Both ends of the weld should be drilled out 5mm small holes to prevent crack expansion. 3. The smaller the welding current, the better, only requires that the welding can be smoothly welded, and the weld can be firmly fused with the base metal.
4. The strip should be narrow, do not swing, and the length of each weld should not exceed 50mm. Immediately after welding, gently hammer the welding place with a small hammer to eliminate the stress in the welding repair zone and prevent cracks. Wait for the workpiece to cool until it is not hot before continuing to weld. If the thickness is too large or the shape is complex, it is appropriate to preheat to about 200ºC.
5. If large gaps are filled, a layer of surfacing should be welded from the four sides first, and then gradually filled to the middle
6. Before welding, the electrode should be baked at about 150ºC for one hour.
| chemical elements |
C | Si | Mn | S | Fe | Ni | residue |
| standard values |
≤2.0 | ≤2.5 | ≤1.0 | ≤0.03 | ≤8.0 | ≥90 | ≤1.0 |
| instantiate | 0.93 | 0.30 | 0.32 | 0.005 | 4.23 | 93.71 | - |
| Electrode diameter(mm) | 2.5 | 3.2 | 4.0 |
| welding current(A) | 65-90 | 90-120 | 100-150 |
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