168 Каталог GEDORE 2014 Профессиональный слесарный инструмент и оборудование Стр.166

Каталог GEDORE 2014 Слесарный инструмент Стр. 166 0168 ENG Lab2u

GEDORE Manufacturing process for sockets Like all hot-forged tools GEDORE sockets ( ) are characterised by their homogeneous structure. The fibres run in parallel with the contour of the tool. The uninterrupted fibre orientation prevents residual stresses in the structure. In cold-forged tools the fibres or lines of stress may deviate. Fibre orientation is equally important in nature. For example in a tree the soft fibre orientation is parallel to the branch so the wood is resistant to bending and twisting. If fibres become kinked the branch loses its stability at the kink point and breaks. The low-stress GEDORE sockets withstand suddenly occurring peak forces better than cold formed sockets. ( ) Not applicable to 1 4" hexagonal sockets Blank cropped to size from 31CrV3 Hot forged in the forging press. Accurately cropped to size. Outside diameter turned and knurled. For this step and the next GEDORE uses high-tech machinery from its in-house mechanical engineering department. Counterbored square socket drive is fluted (ball-stop flute) manufacturer and socket size are permanently stamped. Degreased since grease would destroy the protective gas atmosphere in hardening. Hardened under protective gas atmosphere followed by annealing. Sand blasted in preparation (J) J for surface coating. Nickel-plated and matt-chrome-plated to prevent dazzle. The electrolytically applied nickel coating ensures corrosion protection. The electroplated chrome improves the look and gives the socket a perfect finish. GEDORE UNIT-DRIVE Profile J 0IT UNIT ve Bkr 119 .1 166