Method for testing a bearing component by means of...

G - Physics – 01 – N

Patent

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Details

G01N 29/04 (2006.01) G01N 21/88 (2006.01) G01N 29/44 (2006.01)

Patent

CA 2672375

The invention relates to methods for testing a bearing component (1), in order to ensure that the bearing surface (3) and a load-bearing region (2) located underneath said bearing surface are in a perfect condition. According to the invention, a material testing depth (MPT) containing the point (Pmax) of maximum mechanical load during operation is determined; in a first partial testing step (T1), the bearing component (1) is subjected to an ultrasound test (US) by which means the material region underneath the bearing surface (3) is tested for defects by means of ultrasound, at least up to the material testing depth (MPT); in a second partial testing step (T2), a full optical test (OP) of the bearing surface (3) is carried out, during which the actual surface state (12) of the bearing surface (3) is compared with a nominal surface state (14); and the bearing component (1) is then only classified as faultless if the results (E1, E2) of the two partial testing steps (T1, T2) do not reveal any defects.

L'invention concerne des procédés de contrôle d'un composant de palier (1) au cours desquels une surface de roulement (3) et une zone porteuse de charge (2) située en dessous de la surface de roulement doivent être totalement exemptes de défauts. Ledit procédé consiste à déterminer une profondeur de contrôle de matériau (MPT) contenant le point (Pmax) de contrainte mécanique maximale lié à l'utilisation; à soumettre, dans une première étape de contrôle partiel (T1), le composant de palier (1) à une inspection ultrasonore avec laquelle la zone de matériau (2) située en dessous de la surface de roulement (3), est contrôlée au sujet de défauts au moyen d'ultrasons, au moins jusqu'à la profondeur de contrôle de matériau (MPT); à réaliser, dans une deuxième étape de contrôle partiel (T2), un contrôle optique complet (OP) de la surface de roulement (3) au cours duquel l'état de surface réel (12) de la surface de roulement (3) est comparé à un état de surface de consigne; et à juger que le composant de palier (1) est exempt de défauts uniquement lorsque les deux étapes de contrôle partiel (T1, T2) n'ont pas révélé de défauts (E1, E2).

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