| 摘要 |
PURPOSE:To improve corrosion resistance, and to obtain a clad material highly connected with stainless by clad-connection-process stainless to a double layered clad of aluminium alloy including Mn, Mg, and of an aluminium alloy of high purity Al. CONSTITUTION:To an aluminium alloy Al in which Mn and Mg components are added by 0.2 to 2.0%, an aluminium alloy B2 in which Al is added by 99% or more, is clad-processed. A ferritic stainless 3 heated by electromagnetic induction and the aluminium alloy double layered clad material are roll-clad- processed with each other at a high temperature and under high pressure, so as to form a flat surfaced clad material. After the flat surfaced clad material is made into a form of a pan by drawing, a first fluorine coat 4 is coated and is dried, and a second layer top fluorine coat 5 is then coated, and is burned and baked. Even when a pinhole exists in the fluorine coat, due to the inclusion of Mn and Mg, pitting corrosion of the aluminium alloy Al hardly occurs, and corrosion resistance can thus be improved. |
