Can J506 welding rod be used to weld the barrel connected to the bucket on the forearm of the CAT330D excavator? What are the subtle differences between J506 welding rod and J507 welding rod?

Best solution: Change to a connecting barrel of appropriate size. Welding is a reheating and melting process. The connecting barrel must be special steel that has been treated with wear resistance. Its structure and performance will definitely change once you weld it. Is it wear-resistant? Easily deformed? Cracks or breaks after welding or during use? (Without metallographic analysis, I can only speculate) Before welding, you can also first conduct metallographic analysis under a microscope (this is exempted if you have a product manual) and formulate a strict welding process. There is also a post-weld heat treatment process, and post-weld heat treatment deformation is still unknown. . Is your head too big?

Last resort: In fact, the tensile strength of J506 and J507 is the same. J is the abbreviation of "structural steel". 50 is the tensile strength your welder said, which is 50 Newtons per square millimeter. 6 and 7 are classified according to the composition of the welding rod coating...one is a sodium type base and the other is a potassium type base. In general, the effect is not much different. If welding is necessary, it is recommended to use argon arc welding. The heat is concentrated and the heat affected zone is small. No matter what kind of welding, you must weld one pass and wait for it to cool before welding the next pass to minimize damage to the connecting barrel.

Of course, if you are not so particular, as long as he can use it in the short term. J422 can also be used, haha. Just kidding. Is there no J607? If it is for the relationship between superiors and subordinates and the welding quality, it is better to buy J607.