In this method plate metal gets extended and bent meanwhile on die forming great outlined pieces. Plate metal is cramped alongside its ridges by clamping blades, which are fixed to a carrier operated pneumaticly and hydraulically to extend the plate. Applied tool in this procedure is refered to as a formation die. This is a tough outlined part towards which plate metal is pushed commonly in a vertical manner. When formation die runs in the plate, extensile strength rises bringing about the plate deformity in a required form. Lateral extension raises the formation die sides and the press bar, meanwhile cramping blades stretch the plate in a horizontal manner at the formation die. Pieces obtained in this process have great semidiameter bend, can be both plain and intricate. Stretching allows top accurate and smooth piece formation. Flexible metals are more suitable in this case and the samples include car door and aircraft wing panels as well as window frames. 

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