First of all, we actually have to pay attention to the heat-resistant steel plate in the welding process, the welding parts itself is to pay attention to the use of spot welding or symmetrical welding, the next, in fact, is to pay attention The use of the overall way of welding, in order to avoid the stress on the material to make the phenomenon of cracking, welding the first layer (primer), when the joints on the relatively small, can use 3.2 electrode.
In order to heat the steel plate in the second layer of welding, we actually have to pay attention to should be used on the 4.0 electrode, because the tray itself is relatively large, you can in accordance with 1/6 lap segment welding; Casting castings in the welding which appeared when the crack, it should be noted that the first along the crack on both sides of the groove, the depth and length of the groove should also be cut off the crack and then re-welding.
On the heat-resistant steel plate in the presence of welding cracks should be the first time to head, because the crack began to crack along the roots of the time. On the hardness is greater than the HRC38, the cover when the need to use AI02 electrode.
Moreover, the heat-resistant steel plate in the welding process, on the layered welding of the site, we actually have to pay attention to its first layer of temperature cooled to 200-300 ℃ after its large The extent of the fact that it should be to clean the material plate castings clean the skin, then we actually have to pay attention to the above criteria and then welding the second layer, followed by, in fact, we should pay attention to should be carried out in turn Analogy can be.
Finally, the heat-resistant steel plate in the welding, that is, should be noted that according to the site conditions directly with oxygen block flame to cut and modify the groove, in order to ensure that the heat-resistant steel plate in the welding When a welding quality, the surface of the cast plate should also pay attention to clean the surface, to avoid the oil or slag and other defects.