摘要:
The invention relates to a bearing cover (3) for a split bearing arrangement (1) which comprises a bearing block (2) in addition to the bearing cover (3), wherein said bearing cover (3) has a clamping surface (5) which, in the assembled state of the bearing arrangement (1), rests against a corresponding clamping surface (6) of the bearing block (2) and at least one projection (7) is configured on the clamping surface (5), protruding the same, which can be pressed into the corresponding clamping surface (6) of the bearing block (2). The at least one projection (7) has a cross section (9) that varies along its extension on the clamping surface (5) and/or has the form of a cone, a truncated cone, a pyramid or a truncated pyramid.
摘要:
The invention relates to a method for machining a toothing (7) on an outer circumference (6) or an inner circumference of a work piece (2) made of pressed and sintered powder metal, by means of a rolling process on the toothing (7) using two rotatable section rolling wheels (8), which comprise a formed toothing (13) engaging in the toothing (7) of the work piece (2). Two section rolling wheels (8) are rotatably arranged with at least approximately constant center distances (16) from each other between the section rolling wheels axles (9) in a common supporting frame (10). The invention further relates to a device for a rolling treatment of a toothing.
摘要:
The invention relates to a method for producing a moulded body from sintered steel. According to said method, a sintered powder based on iron is mixed with a master alloy powder containing nickel, boron and iron, and the powder mixture is compressed to form a blank which is then sintered under conditions of a liquid phase sintering with a part by volume in the liquid phase of up to 15 %. In order to improve the impact strength, the boron content of the powder mixture is between 0.03 and 0.2 wt. % when the boron part of the master alloy powder is less than 10 wt. %, the weight ratio between the nickel part and the boron part of the powder mixture exceeds 5, and the master alloy powder has an average particle size of between 10 and 90 µm.
摘要:
Die Erfindung betrifft ein Werkzeug (3) zum Verdichten eines Sinterbauteils oder eines Pulvers für das Sinterbauteil, mit einem Spannelement (10) und einem radial in Bezug auf seine Abmessungen veränderlichen Verdichtungselement (11) mit einer Anlagefläche für das Sinterbauteil bzw. das Pulver, die mit einer zur Oberfläche des herzustellenden Sinterbauteils komplementären Oberfläche ausgebildet ist, wobei das Spannelement (10) eine schräge erste Fläche (12) und das Verdichtungselement (11) eine dazu komplementäre schräge zweite Fläche (13) aufweisen und die erste und die zweite schräge Fläche (12, 13) zur Spreizung bzw. Aufweitung oder Verkleinerung des Verdichtungselementes (11) zusammenwirken, und wobei das Spannelement (10) und/oder das Verdichtungselement (11) in axialer Richtung verschiebbar ist bzw. sind, sowie gegebenenfalls mit einem Stützelement (9).
摘要:
A procedure for the manufacture of a toothed wheel made of a pressed and sintered powder metal blank (1) with allowance in the area of the toothing, whereby plastic deformation compresses the powder metal blank (1) by unwinding the compression tool (7) produced by the opposed toothing penetrating the toothing of the powder metal blank (1). To create advantageous compression conditions, it is suggested that the profile rollers (8) produced by the axial unwinding of the compression tool (7) in the direction of the power metal blank (1) are compressed simultaneously over the entire circumference.
摘要:
Die Erfindung betrifft ein Werkzeug (3) zum Verdichten eines Sinterbauteils oder eines Pulvers für das Sinterbauteil, mit einem Spannelement (10) und einem radial in Bezug auf seine Abmessungen veränderlichen Verdichtungselement (11) mit einer Anlagefläche für das Sinterbauteil bzw. das Pulver, die mit einer zur Oberfläche des herzustellenden Sinterbauteils komplementären Oberfläche ausgebildet ist, wobei das Spannelement (10) eine schräge erste Fläche (12) und das Verdichtungselement (11) eine dazu komplementäre schräge zweite Fläche (13) aufweisen und die erste und die zweite schräge Fläche (12, 13) zur Spreizung bzw. Aufweitung oder Verkleinerung des Verdichtungselementes (11) zusammenwirken, und wobei das Spannelement (10) und/oder das Verdichtungselement (11) in axialer Richtung verschiebbar ist bzw. sind, sowie gegebenenfalls mit einem Stützelement (9).
摘要:
The invention relates to an assembly (1) having at least two metallic components (2, 3) which are subject to sliding stress and each have a sliding surface and in operation slide against one another, wherein at least one of the components (2, 3) consists of a metallic sintered material having an iron-based matrix containing iron together with carbon and up to 10% by weight of at least one non-ferrous metal at least in the region of the sliding stress, where the carbon content is at least 1% by weight and not more than 10% by weight and at least part of the carbon is present in unbound particulate form in the matrix.
摘要:
The invention relates to a spur gear wheel having a gear wheel body (4, 5), which is made of a sintered material and has a circumference over which teeth (6, 7) that protrude in a distributed manner are arranged in the radial direction and which is delimited in the axial direction by two end surfaces (8, 9, 10, 11). At least one shaped element (12) in the form of a recess (13) and/or an elevation (14) and/or a compressed region is arranged on at least one end surface (8, 9, 10, 11) in the region of the teeth (6, 7) and/or in the radial direction beneath the teeth (6, 7).