Method for producing a clad plate by hot rolling

A method for producing clad plates by rolling, said method comprising:

• forming a first multi-layer structure by providing a first cladding material between a first base plate and a first overlaying cover sheet after cleaning joining surfaces thereof;
• forming a first multi-layer assembly by welding said first cover sheet to said first base plate along a periphery thereof, thereby sealing and fixing said first cladding material between said first cover sheet and said first base plate;
• forming a second multi-layer structure by providing a second cladding material between a second base plate and a second overlaying cover sheet after cleaning joining surfaces thereof;
• forming a second multi-layer assembly by welding said second cover sheet to said second base plate along a periphery thereof, thereby sealing and fixing said second cladding material between said second cover sheet and said second base plate;
• forming a blank for rolling by overlaying said first cover sheet of said first multi-layer assembly over the second cover sheet of said second multi-layer assembly and by providing a separating agent between said first cover sheet and said second cover sheet and by welding said first base plate to said second base plate along a periphery thereof, wherein said first and second base plates function to prevent warp;
• hot rolling said blank to produce a rolled article;
• cutting said rolled article along its periphery, thereby separating said first multi-layer assembly from said second multi-layer assembly along said separating agent between said first and second cover sheets;
• and
• removing said first and second cover sheets from their respective multilayer assemblies by at least one machining, grinding, and pickling of said first and second cover sheets thereby providing said clad plates.