Aluminum pot and new double-bottom process thereof

Abstract

An aluminum pot and its new composite bottom technology. The aluminum pot includes an aluminum alloy pot body and a composite bottom sheet. The composite bottom sheet is provided with a number of small holes, and an aluminum foil is arranged above the porous composite bottom sheet. With or without holes, the lower part of the pot body and the holed layer are riveted together by hydraulic press, and the aluminum foil and the non-porous layer are brazed with the pot body at high temperature by a high-frequency brazing machine; The hole can be in any shape; the main component of the porous composite film and the non-porous composite film is iron; the melting point of iron is higher than that of aluminum, so the pressure welding of the first layer will not damage the bottom of the aluminum pot, and the last layer of the composite film It is non-porous and has been wire-drawn. After high-temperature brazing, the overall adhesion is extremely strong, the structure is simple, and the production is convenient, which can greatly reduce production costs and effectively improve the competitiveness of the product.

Description

Technical field: [0001] The invention relates to an aluminum pot and its new composite bottom technology Background technique [0002] At present, most of the aluminum pots that can be used in induction cookers and gas stoves are mechanically riveted double-bottomed pots that are mechanically extruded from the stainless iron base and the pot body. There are riveted through holes on the iron base plate, and the actual effective area of ​​the metal part that generates eddy current at the bottom is small, so there are defects such as low thermal efficiency and poor connection strength; the stainless iron base plate is uneven, which not only affects the appearance, but also affects the surface of the induction cooker. can also cause damage. There is also a process that blind holes are opened on the stainless iron compound negative, and the pot body and the compound negative are fused together during die-casting. Because it relies on the convex column formed by the aluminum liq...

AI Technical Summary

Problems solved by technology

Because it relies on the convex column formed by the aluminum liquid filled in the blind hole to connect the compound bottom and the pot body together, if the compound bottom is thinner, the depth of the blind hole is shallower, and the connection strength between the compound bottom and the pot body low; if the composite film is thicker, there is undoubtedly the disadvantage of high production costs

In addition, the connection between the double bottom plate and the pot body of the double bottom pot mainly depends on the convex column formed in the blind hole. Due to the different thermal expansion coefficients of aluminum alloy and stainless steel, the double bottom pot is resistant to heat and cold under the a

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