Vehicle body component with a tin/zinc coating

Details Vehicle body component with a tin/zinc coating Vehicle body component with a tin/zinc coating

1999-01-22

2001-10-30

Tolan, Ed (Department: 3725)

Metal deforming

With use of control means energized in response to activator...

Sensing tool or tool-linked part

C072S008100, C072S018700, C205S154000, C205S252000

Reexamination Certificate

active

06308544

ABSTRACT:

FIELD OF THE INVENTION
The invention relates to a component with at least one coating containing at least tin and zinc.
It is known that, for reducing a transition resistance between two electrically conductive parts, at least one part is provided with a tin coating. Such components are, for example, solid bolts welded on a body structure of a motor vehicle. With the introduction of water-soluble paints, solid bolts with tin or tin-containing layers are no longer used. The reason for this is that water-soluble paints are dried at a temperature of about 300° C. This drying temperature lies above the melting temperature of the tin of 231.89° C. Drying of a water-soluble paint at about 300° C. therefore destroys the coating.
BACKGROUND AND SUMMARY OF THE INVENTION
It is also known to provide components with a tin/zinc coating, the tin and zinc being in powder form and being applied mechanically to the component. A component of this type is a self-punching semitubular rivet which is used as a connecting element for forming a body structure. The risk also arises that, at the high temperatures which occur during the drying of a water-soluble paint, the tin/zinc coating will experience a change which can lead to a change in the strength of the joint. In particular when such components are used for body structures in the region critical for safety, a change to the strength of the joint is unacceptable.
On the basis of the foregoing, the object of the present invention is to provide a component with at least one coating which contains at least tin and zinc, in which the coating remains stable even at elevated temperatures, in particular at a temperature of about 300° C.
According to the invention, this object is achieved with a component coated with a layer of tin and zinc mixed crystals, in which the tin is from about 50 to about 90% by weight of the mixed crystals layer.


REFERENCES:
patent: 3857684 (1974-12-01), Kubu
patent: 4184928 (1980-01-01), Hoije
patent: 4508601 (1985-04-01), Nemoto et al.
patent: 4910095 (1990-03-01), Izaki et al.
patent: 5033181 (1991-07-01), Lat et al.
patent: 5082536 (1992-01-01), Izaki et al.
patent: 5178903 (1993-01-01), Lat et al.
patent: 5378346 (1995-01-01), Ashinu et al.
patent: 5429882 (1995-07-01), Carey, II et al.
patent: 5489490 (1996-02-01), Carey, II et al.
patent: 5712049 (1998-01-01), Huhn et al.
patent: 5989735 (1999-11-01), Ruimi et al.
patent: 29 35 401 B1 (1980-06-01), None
patent: 38 19 495 C1 (1989-11-01), None
patent: 195 19 866 A1 (1996-12-01), None
patent: 59-129783 (1984-07-01), None
patent: 59-023859 (1984-11-01), None
patent: 62-013592 (1987-01-01), None
patent: 59-200789 (1989-07-01), None
patent: 59-129781 (1993-09-01), None
Everhart, J. L., “Properties Of Tin And Tin Alloys,” Metals Handbook, 8th Ed., vol. 1, Properties and Selection of Metals., pp. 1142-1146.
“Crystal Defects,” McGraw-Hill Encyclopedia Of Science & Technology, 6th Ed., 4 CLI-CYT, p. 570.
Van Vlack, L. H. and Reed-Hill, Robert E., “Alloy,” McGraw-Hill Encyclopedia Of Science & Technology, 6th Ed., pp. 369-372.
Thomson R.M., “Alloy Structures,” McGraw-Hill Encyclopedia Of Science & Technology, 6th Ed., pp. 372-378.
Schlötter Galvanotechnik Technical Bulletin, “Zink/Zinn-Legierungsbad: Slotoloy ZSN 10 [Zinc/Tin Alloy Bath: Slotoloy ZSN 10],” pp. 1-4 (Jan. 27, 1998) with translation.
Volkswagen AG Corporate Standard, “Ternäre Kompositschicht für hochfeste Verbindungselemente [Ternary Composite Coating for High-Strength Connecting Elements]” (Feb. 1995) with translation.

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