Search Results

As a process that enables the high-speed and continuous forming of lengthy materials with a constant cross-sectional configuration, roll forming offers much higher productivity than the stamping process. However, in case a change must be made to the shape of the cross section, the material must normally be stamped or joined with a part containing a separate shape. This affects productivity, increases the number of pieces, and degrades the material's appearance. This report describes the roll-forming technology that we developed, in which the cross section of the material can be changed gradually. This method adopts a system which uses a movable and rotatable roll-stand that enables high-speed, continuous roll-forming processes.

Brazing using arc-sprayed coatings was investigated for application to non-oxidation copper brazing. It was found that the more porous sprayed coatings have an excellent brazeability. This newly developed joining method is more suitable than conventional methods for brazing complicated parts. We have applied this method to fabricate a torque converter for practical use.