Aluminium pot with compound bottom and manufacturing method thereof

Abstract

The invention relates to an aluminium pot with a compound bottom. The pot bottom is fixed with a metal magnetic conductive sheet which is provided with a plurality of holes and grooves, wherein the holes are arranged on the bottoms of the grooves; the groves communicate at least two holes; the spot bottom and the metal magnetic conductive sheet are cast into an integer in a pressing way through a press-casting machine; the grooves are filled with aluminium alloy, and the aluminium alloy inside the grooves is connected with aluminium alloy positioned on the spot bottom through the holes. The grooves are filled with the aluminium alloy, and the aluminium alloy inside the grooves is connected with the aluminium alloy positioned on the spot bottom through the holes, thereby the metal magnetic conductive sheet and the spot bottom of the aluminium pot are reliably fixed; the holes are arranged on the bottoms of the grooves, and the groves communicate at least two holes, thereby the peripheries of the holes of the metal magnetic conductive sheet are wrapped by the aluminium alloys; and the peripheries of the holes of the metal magnetic conductive sheet can not be tilted in the using process of the aluminium pot, thereby effectively preventing an electromagnetic range from being scratched.

Description

technical field [0001] The invention relates to an aluminum pot with a composite bottom and a manufacturing method thereof. Background technique [0002] At present, there are many structures of various aluminum pans. Ordinary die-cast aluminum pots cannot be used on induction cooktops. In order to solve this problem, Chinese patent No. 200510061988.3 has just proposed " a kind of composite pot bottom of aluminum pot and its processing method ". In this technical scheme, the bottom of the aluminum pot is fixed with a magnetically conductive metal plate, which first preforms a plurality of convex posts on the bottom of the pot, and the surface of the magnetically conductive metal plate is stamped to turn out a plurality of turning holes that match the convex posts, and then Put the hole-turning card of the magnetically conductive metal plate on the convex post at the bottom of the pot, and finally stamp and deform the convex post by stamping, so that the magnetically conduc...

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Problems solved by technology

[0003] 1. Since the above-mentioned magnetic conductive metal plate and the bottom of the pot are only fixed on the bottom of the pot by punching and deformation of the convex column, and the operation of the composite magnetic conductive metal plate is carried out at room temperature, so that the magnetic conductive metal plate and the bottom of the pot are The indirect contact is not tight, and the thermal conductivity is not ideal

[0004] 2. Since the above-mentioned magnetically conductive metal plate and the bottom of the pot are only fixed by the stamped and deformed bosses, the thermal expansion coefficients of the magnetically conductive metal plate and aluminum are different, and the bosses around the pot bottom are magnetically guided during the process of thermal expansion and contraction. The metal plate is pulled up, causing the periphery of the boss to warp up, which in turn scratches the cooktop during use

But there are the following disadvantages: because the above-mentioned compound bottom aluminum pot has a through hole on the side of the groove, after the bottom sheet is combined with the bottom of the pot, there is no aluminum alloy coating on the upper edge of the through hole of the bottom sheet. Will warp and scratch the cooktop

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