Manufacturing method of copper-iron transition block

The invention discloses a manufacturing method of a copper-iron transition block, and belongs to the technical field of dissimilar metal connection. The prepared brass strip and the prepared steel strip are clamped into the two baffles of the tool and pressed through screws, and stable clamping is achieved; and a friction stir welding machine is adopted for conducting friction stir welding on the two welding seams, the welded composite strip material is sawn and segmented according to the product size requirement, then friction stir welding is adopted for welding the two new welding seams of the sawn and segmented composite strip material, and then product machining is completed through machining. According to the friction stir welding manufacturing process, no welding material is needed, and a friction stir welding joint is high in strength and free of defects; the brass strip and the steel strip are integrally processed and then cut, so that the manufacturing is simple, the efficiency is higher, the mass pr