| 摘要 |
The present invention relates to an improvement for a combination structure of the bottom of a pan (kettle) body and a heating apparatus, and more particularly to the improvement which includes weld-bonding an aluminum alloy plate or aluminum block of similar or dissimilar materials to the bottom of a pan (kettle) body, wherein the outer side of the aluminum alloy plate or aluminum block can be molded by die casting or casting to embed an electric heating tube therein, or the aluminum alloy plate or aluminum block is preheated to a certain temperature, the softened aluminum alloy plate or aluminum block is formed with an accommodating groove for accommodating an electric heating tube, the above-described aluminum alloy plate or aluminum block and the bottom of the pan (kettle) body are joined by high speed friction heat welding, and then the electric heating tube is clamped and fixed within the accommodating groove of the aluminum alloy plate or aluminum block, or an electric heating tube is embedded in an aluminum block which is then friction welded to the pan (kettle) such that the bottom of the pan (kettle) body can be quickly weld-bonded to the aluminum alloy plate or the aluminum block.
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