Honda Motor Co., Ltd.

Honda Giken Kogyo Kabushiki Kaisha

Nihon Parkerizing Co., Ltd.

Cemedine Co., Ltd.

Katsutoshi Ando

Eiji Suzuki

Kenichi Kitayama

Yoichiro Inaba

Koji Oda

Kozo Kusumoto

Daisuke Makino

Atsuhiko Suzuki

Yuko Takanashi

Yuusuke Murachi

Hideki Takakuwa

Yasuhito Murai

Provided are: a structure adhesive composition which exhibits favorable thread breakage and improves shower resistance, and prevents stringiness when stitch-coating is performed; a method for producing a vehicle structure using the same; and a vehicle structure. A structure adhesive composition exhibiting favorable thread breakage, the structure adhesive composition being a structure adhesive composition containing no liquid rubber component,

Structure adhesive composition exhibiting favorable thread breakage and capable of stitch coating

A solution for treating a surface of an iron material includes (a) zirconium fluoride; (b) ion of a rare earth element and/or a compound containing a rare earth element; (c) a polyallylamine; (d) aluminum ion; and (e) free fluorine ion. Zirconium in the component (a) is at a weight concentration A of 10 to 1000 ppm. The ratio K of the weight concentration B of the rare earth element in the component (b) to the weight concentration A (B/A) is 0.1 to 30. The component (d) is at a weight concentration D of 50 to 250 ppm. The component (e) is at a weight concentration E of 0.5 to 30 ppm. A coating having excellent corrosion resistance before and after the subsequent coating can be deposited on the surface of an iron material by using the surface treating solution which does not contain environmentally harmful ingredients.

Solution for treating metal surface, surface treating method, and surface treated material

The present invention provides for a bolt structure for use with a magnesium alloy member that can insulate between magnesium alloy members and steel or other bolts without lowering the bolt shaft power, and prevent occurrence of electrolytic corrosion with an electrolyte such as water. A cationic electrodeposition coating is also provided for the bolts structure, said coating having a film thickness of 15 &#x3bc;m or more is provided at least on the surface of the magnesium alloy member contacting with a bolt head, a powder coating having a film thickness of 40 to 150 &#x3bc;m is provided on the surface of the cationic electrodeposition coating, zinc-nickel plating and then cosmer treatment are carried out on the bolt, and an alumite-treated aluminum washer is interposed between the bolt head and the magnesium alloy member.

Bolt structure for use with a magnesium alloy member for tightening magnesium alloy members with each other or with a heterogenenous material

The present invention provides a bolting structure for a magnesium alloy member, having a non-magnesium alloy and conventional member disposed on the magnesium alloy member the magnesium alloy member being covered with an insulator and a bolt initially inserted through the magnesium alloy member and then into the conventional member thereby permitting the conventional member and the magnesium alloy member to be bolted together, comprising: a washer disposed between a head of the bolt and the magnesium alloy member the washer having a boss disposed thereon, wherein the magnesium alloy member is formed with a through-hole that is greater in diameter than a bolthole of the washer The above boss and through-hole eliminate a chance that the bolt contacts the through-hole The insulator remains intact because of non-contact of the bolt with the through-hole so that no stray current corrosion occurs.

Bolting structure for magnesium alloy member

Growing community of inventors

Saitama, Japan

Katsutoshi Ando