본 발명은 염가이고 염해 내식성이 우수한 자동차용 부재 및 급유관을 제공하는 것을 과제로 한다. 질량%로 C: ≤0.015%, N: ≤0.015%, Cr: 10.5∼18.0%, Si: 0.01∼0.80%, Mn: 0.01∼0.80%, P ≤0.050%, S: ≤0.010%, Al: 0.010∼0.100%를 함유하고, 또한 Ti: 0.03∼0.30% 및 Nb: 0.03∼0.30%의 1종 또는 2종을 함유하는 페라이트계 스테인레스 강을 소재로 한 부재와 부재에 부착되는 Al 도금 스테인레스 강판으로 성형된 금구 부품 사이에 있어서, 염해 환경에 노출되는 간극 구조부를 갖고, 간극 구조부의 간극부에 해당하는 면에 있어서의 금구 부품의 Al 도금 부착량이 20g/m이상 150g/m이하이고, 간극부 이외의 부재 및 금구 부품의 표면이 두께 5∼35㎛의 양이온 전착 도막으로 피복되어 있는 자동차용 부재 또는 급유관이다.
An object of the invention is to provide an inexpensive automotive member and feed oil pipe, exhibiting excellent salt corrosion resistance. An automotive member or a feed oil pipe includes: a member made of a ferritic stainless steel containing, in mass%, at most 0.015% of C, at most 0.015% of N, 10.5% to 18.0% of Cr, 0.01% to 0.80% of Si, 0.01% to 0.80% of Mn, at most 0.050% of P, at most 0.010% of S, 0.010% to 0.100% of Al, and one or both of 0.03% to 0.30% of Ti and Nb; a metal fitting made of an aluminized stainless steel sheet, the metal fitting being attached to the member; and a gap structure defined between the member and the metal fitting, the gap structure being exposed to a chloride environment, where the metal fitting has an Al-plating weight per unit area of 20 g/m 2 or more and 150 g/m 2 or less on a surface corresponding to a gap of the gap structure, and surfaces of the metal fitting and the non-aluminized member other than the gap are coated with a cation electrodeposition coating film having a thickness of 5 µm to 35 µm.
INEXPENSIVE AUTOMOTIVE MEMBER AND FEED OIL PIPE EXHIBITING EXCELLENT SALT CORROSION RESISTANCE
염가이고 염해 내식성이 우수한 자동차용 부재 및 급유관
2016-05-17
Patent
Electronic Resource
Korean
IPC: | C22C Legierungen , ALLOYS / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / C23C Beschichten metallischer Werkstoffe , COATING METALLIC MATERIAL / C23F Nichtmechanisches Entfernen metallischer Stoffe von Oberflächen , NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACES / C25D Verfahren für die elektrolytische oder elektrophoretische Herstellung von Überzügen , PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS |
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