Page 11 - Motor Fan illustrated Special Edition
P. 11

Thin sheets    Thick sheets
                                                                                                                                         Tailored blanking

                                                                                                                                                                                     Thick sheets Aluminum sheet parts  Unified through joining  create components

                                                                                                                                                                                                                                  Pressed to


                                                                                                                                                                                          Comparison of different joining methods

                                                                                                                                                                                                 Joining efficiency (speed m/min)   Quality  Cost
                                                                                                                                                                                           Method  1 mm/1 mm  1 mm/2 mm  property  Formability  Device  Shielding
                                                                                                                                                                                                                 Tensile
                                                                                                                                                                                                  Thickness:
                                                                                                                                                                                                         Thickness:
                                                                                                                                                                                                                                          gas
                                                                                                                                                                                                                      Stretch forming  Deep drawing

                                                                                                                                                                                            FSW                Base material  Base material  Base material   Not
                                                                                                                                                                                                                         part
                                                                                                                                                                                                                fracturing
                                                                                                                                                                                                                                part
                                                                                                                                                   The first-generation Audi R8 was the first mass-market   2.0 ~ 4.0  2.5 ~ 3.5   (5000 series)   fracturing  fracturing  Medium  needed
                                                                                                                                                   automobile to employ tailored blanking.

                                                                                                                                     Tailored blanking is a production method that involves joining   YAG      Base material   Base material  Base material
                                                                                                                                                                                                                                part
                                                                                                                                                                                                                fracturing
                                                                                                                                                                                                                         part
                                                                                                                                     materials of differing thicknesses or qualities before press forming   laser  2.0 ~ 4.0  2.0 ~ 4.0   (5000 series)   fracturing  fracturing  Expensive Needed
                                                                                                                                     them. Since it is possible to position materials of differing
                                                                                                                                     strengths, thicknesses, and qualities only where they are required,
                                                                                                                                                                                            Arc
                                                                                                                                     the method contributes greatly to weight reduction.   welding  ~ 1.2  ~ 1.2  Base material   Welded  Base material   Inexpensive Needed
                                                                                                                                                                                                                                part
                                                                                                                                                                                                                         part
                                                                                                                                                                                                                fracturing
                                                                                                                                                                                                                (5000 series)   fracturing  fracturing
                                                                                                                                                                                                      Excellent      Good      Acceptable      May require further consideration


                                                                                                                                         Adhesion                                                                                                 Motor Fan illustrated



                                                                                                                                                                                                                     High-adhesive strength       ALUMINUM  AUTOMOBILE TECHNOLOGY
                                                                                                                                                                                                                     pre-coated aluminum alloy sheet

                                                                                                                                                             Cockpit cross-car beam created by joining              Aluminum alloy sheet material with a
                                                                                                                                                             aluminum alloy and resin.                              coating that is highly adhesive to resin
                                                                                                                                                                                                                    is used to support the weather strip.


                                                                                                                                      KO treatment sheet:
                                                                                                                                      high-adhesion aluminum                                                                                      11
                                                                                                                                      sheet surface processing
                                                                                                                                                                                                                                Adhesive pre-coat
                                                                                                                                                                                                                                aluminum alloy sheet
                                                                                                                                     UACJ Corporation’s KO processed
                                                                                                                                     aluminum sheet is covered with a                                   Dendritic porous layer
                                                                                                                                     high-adhesion oxide layer with a                                   200 nm to 250 nm            Polypropylene
                                                                                                                                                                                                                                    resin
                                                                                                                                     complex porous and dendritic
                                                                                                                                     configuration.
                                                                                                                                                                                                          Barrier layer
                                                                                                                                                                                                          10 nm to 20 nm         Weather strip
                                                                                                                                         Brazing

                                                                                                                                     Automobile heat exchangers are produced by assembling multi-hole flat
                                                                                                                                     tubes and corrugated brazing sheets. To reduce weight and enhance
                                                                                                                                     performance, heat exchanger materials are made thinner, so corrosion
                                                                                                                                     proofing is vital.








                                                                                                                                                                                                 Intercooler
                                                                                                                                                                                                 The core part of an intercooler is made of
                                                                                                                                                                                                 aluminum alloy, and the fins and tubes are
                                                                                                                                                                                                 braised to form a single unit.
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