摘要:
In a vehicle body structure in which a vehicle-body frame of front side frames 2 with a flangeless structure having a rectangular closed cross section and a vehicle-body panel of a dash panel 1 are welded, a concave portion 15 is formed at a specified portion of the vehicle-body panel to which the vehicle-body frame is welded so as to be concaved toward one side which is opposite to a disposition side of the vehicle-body frame and extends in its longitudinal direction, a temporary connection portion 16 which temporarily connects the vehicle-body frame to a side of the concave portion 15 is formed, and a laser welding portion 17 which connects the vehicle-body frame to the vehicle-body panel is formed near the temporary connection portion 16 so as to extend along the longitudinal direction of the vehicle-body frame.
摘要:
A gap 3 is provided at joining faces 1a , 2a of a pair of metal works 1 , 2 with an uneven shape when the metal works contact one another for joining. An adhesive agent 4 having a chain-reacting curing reaction function is disposed within the gap 3 . The adhesive agent 4 is cured by an autogenously-generated curing reaction heat caused by an outer energy and an additional heat that is successively generated by the autogenously-generated curing reaction heat within the adhesive agent 4 . A welding portion 5 , where the works 1 , 2 contact one another substantially directly, is welded by a laser beam 31 , and the above-described energy for causing the autogenously-generated curing reaction heat for the adhesive agent 4 is provided by the laser beam 31 . Accordingly, a joining structure and method of metal works that can has less limitation in a joining location is provided.
摘要:
A long glass fiber filler reinforced resin material for molding comprises a masterbatch formed of a composite of a matrix resin including a PP component and a long glass fiber filler and a diluent resin made from an ethylene-propylene block copolymer. The above-described matrix resin of the masterbatch includes the PP component having a pentad isotactic index of at least 95%, and a MFR of the matrix resin of the masterbatch is 100 to 500g/10min and larger than six times a melt flow rate of the diluent resin. The long glass fiber filler is in a content of 30 to 50 mass percent with respect to a total mass thereof.