| 摘要 |
A welding structure and a welding method for an aluminum accumulator capable of reducing weld defects and providing high productivity, and a heat exchanger. The welding structure comprises an aluminum pipe having a beading processed part, the aluminum accumulator, and a stainless steel pipe. The stainless steel pipe is inserted onto the aluminum pipe up to the beading processed part, the aluminum pipe onto which the stainless steel pipe is inserted is inserted into the aluminum accumulator up to the beading processed part, and the aluminum pipe, the aluminum accumulator, and the stainless steel pipe are welded to each other on the outer periphery of the overlapped joint part thereof. |
