Honda Giken Kogyo Kabushiki Kaisha

Mitsuba Corporation

Toshihiro Takeuchi

Tadashi Imanaka

Keiji Kiuchi

Shigeru Akutsu

Atsushi Tsuzaki

Takeshi Mashimo

Hidemichi Ohta

Tadayoshi Hayashi

Ichiro Iwai

Ichizo Tsukuda

Tsuyoshi Kawabe

Ryotatsu Otsuka

Yoshio Takada

Kazunori Takikawa

Katsuyoshi Kaneko

A structure of joining in a T shape two frame members of U-shaped cross sections having openings is provided. At a joint of the first frame member and the second frame member, a reinforcing member mounted with unfoamed resin is set within the first and second frame members. A foamed resin fills the spaces between the first and second frame members and the reinforcing member. The first and second frame members, foamed resin and reinforcing member are integrally united, having a high strength at the joint of the two frame members.

Frame joint structure and joining method thereof

An electrolytic test machine is used for a corrosion resistance test for a test material comprised of a metal blank and a coating film. The electrolytic test machine is constructed so that an adverse influence, due to chlorine gas generated during a test, can be inhibited. The electrolytic test machine includes an electrolytic cell in which an aqueous solution of NaCl is stored so that a test material is immersed in the aqueous solution of NaCl. An electrode is immersed in the aqueous solution of NaCl. A DC power source supplies electric current between the electrode and the test material. A chlorine gas treating device collects chlorine gas which is generated with electrolysis of the aqueous solution of NaCl and which is released out of the aqueous solution of NaCl along with the aqueous solution of NaCl. The chlorine gas treating device includes a treating pipe line, a suction pump mounted on the treating pipe line, and a chlorine gas purifying member.

Electrolytic test machine

Corrosion resistance test process for test material comprised of metal

Electric anticorrosion method and apparatus

An electrode is mounted in a vertical manner in an electrolytic liquid in an electrolytic cell. A harmful gas collecting hood is disposed within the electrolytic cell to cover the entire upper portion of the electrode. One end of a bottom surface of the hood lies at a higher location than the other end of the bottom surface of the hood. An inlet of a harmful gas treating pipe line is disposed in the vicinity of that portion of the bottom surface of the hood which lies at the higher location thereof. A harmful gas generated around the electrode is smoothly guided to the inlet by a guide effect of the hood and sucked into the inlet.

It is an object of the present invention to provide a corrosion resistance test process, wherein the estimation of the corrosion resistance of an article formed of a metal material and a coating can be carried out synthetically and in a short time. In carrying out a corrosion resistance test, the article is immersed into an electrolytic solution and then, a voltage is applied to the metal material to carry out a metal material corroding step and a coating peeling-off step alternatively and repeatedly. The voltage applied to the metal material is a superimposed voltage Vd+Va resulting from superimposition of a DC voltage Vd and an AC voltage Va. A voltage condition of Vd&lt;0 and Vd+Va&gt;0 is established at the metal material corroding step, while a voltage condition of Vd&lt;0 and Vd+Va&lt;0 is established at the coating peeling-off step.

Corrosion resistance test process for article formed of metal material

An electrolytic test machine includes an electrolytic cell in which an electrolytic liquid is stored so that a test material is immersed in the electrolytic liquid. An electrode is immersed in the electrolytic liquid. A DC power source supplies a current between the test material and the electrode. A treating pipe line extends from the electrolytic cell to collect a harmful gas which is generated from the electrolytic liquid during supplying of a current and which is released out of the electrolytic liquid, along with the electrolytic liquid. A harmful gas purifying device is disposed in the treating pipe line. The harmful gas purifying device includes a catalyst for purifying the harmful gas, and a determining device for determining the replacement time of the catalyst.

A corrosion-resistant clad material is made of aluminum alloys, and in a preferable mode, comprises: a core which is either formed of an Al-Mn alloy containing 0.5-1.5% by weight of Mn; or alternatively formed of an Al-Mg-Si alloy containing 0.05-1.0% by weight of Mg and 0.05-0.3% by weight of Si. The Al-Mn alloy and Al-Mg-Si alloy further contain, as additional components, 0.05-0.3% by weight of Ti and/or 0.05-0.4% by weight of Zr. The clad material further comprises a skin layer which is formed of an Al-Zn alloy clad onto at least one surface of the core. In another preferable mode, the clad material comprises: a core formed of an Al-Mn alloy containing 0.5-1.5% by weight of Mn; and a skin layer clad onto at least one surface of the core and formed of an aluminum alloy containing 1.3-5.0% by weight of Zn, with or without 0.2-1.0% by weight of Mg, and a balance of aluminum and unavoidable impurities. Cu content as one of the impurities is controlled to 0.05% by weight or less, with the skin layer having a thickness of 30 .mu.m or less.

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Wako, Japan

Toshihiro Takeuchi