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Reinforcement member comprising a cold bent tab

一种加强构件、加强结构的技术，应用在载货车的上部结构、上部结构、车辆部件等方向，能够解决减少加强构件使用寿命、加强构件断裂、片状件断裂等问题

Active Publication Date: 2019-07-05
ARCELORMITTAL INVESTIGACION Y DESARROLLO SL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the bending operation can lead to the breakage of the reinforcing members, or at least the deterioration of the quality of the sheet due to the creation of cracks in the coating
These cracks can easily propagate into the high strength steel, which can cause the sheet to break in case of impact
In addition, these cracks also reduce the corrosion resistance of the reinforcement members, thus reducing the service life of the reinforcement members

Method used

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  • Reinforcement member comprising a cold bent tab
  • Reinforcement member comprising a cold bent tab
  • Reinforcement member comprising a cold bent tab

Examples

Experimental program
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Embodiment Construction

[0033] In the following description, the terms "rear" and "front" are defined according to the usual orientation of the mounted vehicle. The term "longitudinal" is defined in terms of the front-to-rear direction of the vehicle.

[0034] refer to figure 1 and figure 2 , describes a reinforcement member 1 for a vehicle. Such a reinforcement member 1 can be used to reinforce a part of a vehicle to prevent deformation of said vehicle part. For example, the reinforcement member 1 may be provided as a seat cross member extending under a vehicle seat, or as part of a roof reinforcement assembly as will be described later.

[0035] The reinforcing member 1 includes a body 2 made of press-quenched steel having a tensile strength greater than or equal to 1200 MPa and coated with a zinc-based coating or an aluminum-based coating.

[0036] The composition of this steel may contain, by weight %, for example: 0.15%≤C≤0.5%, 0.5%≤Mn≤3%, 0.1%≤Si≤1%, 0.005%≤Cr≤1%, Ti≤0.2%, Al≤0.1%, S≤0.05...

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Abstract

A reinforcement member (1) comprises a body (2) made of a press hardened steel having a tensile strength greater or equal to 1200 MPa coated with a zinc- based coating or with an aluminum-based coating, said body (2) extending along a main direction (A), the reinforcement member further comprising at least one tab (16) extending from the body (2) along a transversal direction (B) forming a non-zero angle (a) with the main direction (A), the bend (18) between the body (2) and the tab (16) defining an intrados (20) and an extrados (22). Said tab (16) is made of a cold bent part of the body (2),the elongation of the extrados (22) being comprised between 10% and 25%.

Description

technical field [0001] The present invention relates to a reinforcement member for a vehicle, of the type comprising a body made of press-quenched steel having a tensile strength greater than or equal to 1200 MPa and coated with a zinc-based coating or an aluminum-based coating layer, the body extending in a main direction, the reinforcing member further comprising at least one sheet extending from the body in a transverse direction forming a non-zero angle with the main direction, between the body and the sheet The curved portion defines an inner arc and an outer arc. [0002] The invention also relates to a roof reinforcement assembly comprising such a reinforcement member, a seat cross member assembly comprising such a reinforcement member, and methods for manufacturing such a reinforcement member, such a roof reinforcement assembly and such a seat cross member assembly . Background technique [0003] Reinforcement members made of high-strength steel, such as press-quen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D25/20B62D29/00B62D33/06B21D22/00
CPCB62D25/20B62D29/007B62D33/06B21D22/022B32B15/012B62D27/02B32B2605/00B62D25/06B62D65/02C22C38/001C22C38/002C22C38/02C22C38/04C22C38/06C22C38/48C22C38/50C22C38/54
Inventor 吉米·拉姆乔尔·威尔修斯尼古拉斯·施奈德
Owner ARCELORMITTAL INVESTIGACION Y DESARROLLO SL