Abstract:
The present invention refers to a half frame manufacturing process for a motor vehicle comprising the steps of obtaining a blank (1 ) with a chamfer that is subsequently formed and calibrated, a punch (2) being provided with a recess (2a) having a specific angulation that allows calibration of the chamfers (4) to receive the welding.
Abstract:
The invention relates to a method for brazing or welding components in a serial production, preferably for the joining of vehicle chassis parts, with a) generation of a fixed joint (11) connecting the components (1, 2) along a joint formed by the components (1, 2) by fusion of a joint material (3), introduced as an auxiliary material or formed from the base material of the components (1, 2) and b) a volume -forming layer (12) of joint material (3) is applied to the fixed joint (11) by fusion, or the fixed joint (11) generated form joint material introduced as auxiliary material is remelted.
Abstract:
The present invention relates to a method and a device in which: - a workpiece is welded with the aid of a laser, - the light intensity above the weld pool is measured with the aid of an optical sensor, - the value measured by the optical sensor is compared with a defined reference value, and, - the energy supplied to the weld pool per unit length is adjusted as a function of the difference between the measured value and the determined reference value. According to the invention, the reference value is determined by allowing the energy supplied to the weld pool per unit length to increase from a relatively low starting level or to decrease from a relatively high starting level until a step change in the measured light intensity from a relatively high level to a relatively low level or vice versa is measured, after which the intensity measured by the optical sensor is used as a control signal for the quantity of energy which is to be supplied to the weld pool per unit length, the energy which is to be supplied to the weld pool per unit length being allowed to increase when the optical sensor measures a relatively high level of the light intensity and the energy to be supplied to the weld pool per unit length being allowed to decrease when the optical sensor measures a relatively low level of the light intensity.
Abstract:
A different-thickness, different-material tailored blank material excellent in formability, capable of avoiding a rupture on a low-strength (or low plate-thickness) material side caused by strength rate controlling when press-forming a different-thickness, different-material tailored blank material. A press-forming tailored blank material excellent in formability which is a tailored blank material formed by continuously welding at least two kinks of blank plates having different tensile strengths, characterized in that a ratio (n1/n2) between work hardening characteristic values (n1), (n2) of a high-tensile-strength-side material and low-tensile-strength-side material is at least 0.75 and up to 3.8.
Abstract:
During the welding of tailored blanks, the edges (2', 3') of the sheets (2, 3) are detected in the welding device (1) by sensing elements (6, 7). One of the edges is designated a reference edge and the other is adapted to this reference edge using a machining device (10). The sheets are then aligned with their edges and welded using a laser beam (5). This provides a simple means of obtaining an allowable gap value for the welding.
Abstract:
The invention relates to a measuring device for determining the width of a gap between the edges of sheet metals, especially sheet metal bands, billets or tailored blanks (1), (2), that are welded together using a radiation welding process, comprising a radiation source (9) arranged on one side of the sheet metal and a radiation receiver (10) located on the other side of the sheet metal. In order to ensure operability of the measuring device even in the case of incidental impurities, the radiation sources (9) and the radiation receiver (10) are mounted in corresponding closed chambers (12), (15), each of which has an orifice (11), (14) in the direction of radiation and the chambers (12), (15) have a compressed air connection (13), (16).
Abstract:
Before welding two sheet metal sections (2, 3) of a tailored blank, structures are made in said sheet metal sections in the area of the butt joints resulting in form closure of both sheet metal sections. Said form closure area (21) is then welded. This makes it possible to use a simpler retaining device for the sheet metal and to cut the butt joints with less precision.
Abstract:
L'invention a pour objet un procédé de soudage de demi-produits monolithiques en alliage d'aluminium par laser sans fil d'apport, connu de l'homme de métier sous l'appellation de «Remote Laser Welding» comportant les étapes suivantes: -Approvisionnement d'au moins deux demi-produits en alliage d'aluminium dont l'un au moins est une tôle laminée de composition (% en poids): Si: 2,5-14 de préférence 2,7-5,0; Fe : 0,05-0,80 de préférence 0,15-0,60; Cu : ≥ 0,20 de préférence ≥ 0,10 voire
Abstract:
There are provided a structural member and a method of manufacturing the structural member. Tailor welded blank (TWB) or tailor rolled blank (TRB) technology is applied to corners of the structural member in consideration of collapse behaviors under axial load conditions, so as to increase the rigidity of a portion of the structural member on which deformation is locally concentrated and improve the energy absorption ability and crash performance of the structural member.