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WELDABLE NUT PLATE

20200063781 ยท 2020-02-27

    Inventors

    Cpc classification

    International classification

    Abstract

    A car body (1) includes a nut plate (2) predominantly made of hardened steel, wherein the hardened steel of the nut plate (2) is welded directly to the car body (1). A nut plate (2) as for use in direct welding to a car body (1) is also provided. A method for mounting a nut plate (2), which is predominantly made of hardened steel, to a car body (1), wherein the method involves welding the hardened steel of the nut plate (2) to the car body (1).

    Claims

    1-15. (canceled)

    16. A car body comprising: a nut plate predominantly made of hardened steel, wherein the hardened steel of the nut plate is welded directly to a portion of the car body.

    17. The car body according to claim 16, wherein the hardened steel comprises 0.0012-0.006 weight % of boron B.

    18. The car body according to claim 17, wherein the hardened steel comprises 0.8-1.6 weight % of manganese Mn.

    19. The car body according to claim 18, wherein the hardened steel comprises 0.11-0.31 weight % of chromium Cr.

    20. The car body according to claim 19, wherein the hardened steel comprises 0.16-0.3 weight % of carbon C.

    21. The car body according to claim 20, wherein the hardened steel comprises 0.16-0.42 weight % of silicon Si and/or at most 0.04 weight % of phosphor P and/or at most 0.012 weight % of sulfur S.

    22. The car body according to claim 16, wherein the hardened steel of the nut plate is welded directly to the car body by spot welding.

    23. The car body according to claim 16, wherein the hardened steel comprises: 0.0015-0.005 weight % of boron B; 1-1.3 weight % of manganese Mn; 0.14-0.26 weight % of chromium Cr and 0.2-0.25 weight % of carbon C.

    24. The car body according to claim 23, wherein the hardened steel comprises: 0.2-0.35 weight % of silicon Si and/or at most 0.03 weight % of phosphor P and/or at most 0.01 weight % of sulfur S.

    25. A nut plate weldable directly to a car body, the nut plate comprising: predominantly hardened steel, wherein the hardened steel comprises: 0.0012-0.006 weight % of boron B; 0.8-1.6 weight % of manganese Mn; 0.11-0.31 weight % of chromium Cr; and 0.16-0.3 weight % of carbon C.

    26. The nut plate of claim 25, wherein the hardened steel comprises 0.16-0.42 weight % of silicon Si and/or at most 0.04 weight % of phosphor P and/or at most 0.012 weight % of sulfur S.

    27. The nut plate of claim 25, wherein the hardened steel of the nut plate comprises: 0.0015-0.005 weight % of boron B; 1-1.3 weight % of manganese Mn; 0.14-0.26 weight % of chromium Cr; and 0.2-0.25 weight % of carbon C.

    28. A method for mounting the nut plate of claim 25 to a car body, comprising: welding the hardened steel of the nut plate directly to the car body.

    29. A vehicle attachment system, comprising: a car body portion with a nut plate predominantly made of hardened steel, wherein the nut plate is welded directly to the car body portion, wherein the hardened steel comprises 0.0012-0.006 weight % of boron B.

    30. The vehicle attachment system of claim 29, wherein the hardened steel comprises 0.8-1.6 weight % of manganese Mn.

    31. The vehicle attachment system of claim 30, wherein the hardened steel comprises 0.11-0.31 weight % of chromium Cr.

    32. The vehicle attachment system of claim 31, wherein the hardened steel comprises 0.16-0.3 weight % of carbon C.

    33. The vehicle attachment system of claim 32, wherein the hardened steel comprises 0.16-0.42 weight % of silicon Si and/or at most 0.04 weight % of phosphor P and/or at most 0.012 weight % of sulfur S.

    34. vehicle attachment system of claim 29, wherein the hardened steel comprises: 0.0015-0.005 weight % of boron B; 1-1.3 weight % of manganese Mn; 0.14-0.26 weight % of chromium Cr and 0.2-0.25 weight % of carbon C.

    35. The vehicle attachment system of claim 34, wherein the hardened steel comprises: 2-0.35 weight % of silicon Si and at most 0.03 weight % of phosphor P and at most 0.01 weight % of sulfur S.

    Description

    BRIEF DESCRIPTION OF THE DRAWINGS

    [0015] FIG. 1 shows a portion of a car body including a nut plate.

    DETAILED DESCRIPTION

    [0016] There follows a further explanation of the invention with reference to a drawing, FIG. 1. The car body 1 has a nut plate 2 predominantly made of hardened steel. The hardened steel of the nut plate 2 is welded directly to the car body 1.

    [0017] In this specific example, the nut plate 2 is welded by means of a spot welding method at a welding spot 3. It also has two openings with internal threads 4, 4, here in the form of bushings.

    [0018] The hardened steel has the following materials:

    TABLE-US-00002 B: 0.00175 weight % Mn: 0.15 weight % C: 0.025 weight % Cr: 0.06 weight % Si: 0.075 weight % P: 0.015 weight % S: 0.005 weight %

    LIST OF REFERENCE NUMERALS

    [0019]

    TABLE-US-00003 1 Car body 2 Nut plate 3 Welding spot 4 Thread