A furrow opener for an agricultural implement includes a main body defining a knife and a wing body defining a pair of wings. The wings include respective leading edge members of wear resistant material along a front thereof which extend forwardly at a laterally inward slope towards a common junction on the wing body. A front end face on the wing body at the common junction is oriented perpendicularly to a forward direction of the opener. A nose member of wear resistant material spans across the front end face of the wing body and the front ends of the leading edge members of the wings to define a radius of curvature between the leading edges of the wings.

Embodiments relate generally to systems and methods for preventing arcing within a snap action switch, particularly by removing a portion of a contact carrier attached to a stationary contact. A method of forming a contact for use in a snap action switch may comprise welding a contact onto a contact carrier; trimming at least one edge of the contact carrier proximate to the contact; and installing the contact carrier into a snap action switch housing. Trimming the at least one edge of the contact carrier may also comprise removing flash formed during the welding of the contact to the contact carrier.

A braze preform includes a filler metal, a flux in communication with the filler metal, and a luminescent material covering at least a portion of the filler metal. The luminescent material is equal to or less than 0.15% total weight of the braze ring. Further, the luminescent material includes at least one of a luminescent ink, a solvent, and a binder. The solvent may be one of a bromide-based solvent or a non-chlorine-based solvent. The binder may be an acrylic resin.

A flowing direction of a cooling liquid introduced into a heat sink is a direction perpendicular to a stacking direction. Each of the plates has a plurality of holes. In a state in which the plates are stacked in the stacking direction, flow paths formed by the holes of the plates being connected to each other in the stacking direction and the flowing direction have helical shapes toward the flowing direction. Helix center axes at helix centers of the flow paths are formed in only one row in the stacking direction.

The present disclosure relates to fluid injection valves. Embodiments of the teachings thereof may include a valve needle for a fluid injection valve and a fluid injection valve. For example, a valve needle for a fluid injection valve may include: a needle shaft; and a sealing ball welded to a tip of the needle shaft. The welded joint between the sealing ball and the needle shaft comprises at least two separate weld seams extending along a perimeter of the valve needle in the form of c-shaped arcs.

A composite material comprising a plurality of round particles bound together by a binding material. Each of the plurality of round particles includes a wear resistant element, an intermediate coating on the wear resistant element, and a round outer layer encapsulating the intermediate coating and the wear resistant element. The intermediate coating is metallurgically bonded to the wear resistant element, and is metallurgically bondable to the binding material.

A braze preform is provided that includes a filler metal and a luminescent material that covers at least a portion of the filler metal and that can luminesce when exposed to a black light. The luminescent material may include a luminescent ink and a solvent that are mixed together before being applied to filler metal. Presence of the braze preform may be determined using automated equipment by detecting luminescence of the braze preform with a sensor. A decision may be made on whether to advance a parts assembly for brazing based on the determination of presence or absence of the braze preform on such parts assembly.

A cassette for a bicycle may include a plurality of sprocket portions joined together into a single unit. The cassette may include a cavity formed in the large end of the cassette. A related manufacturing method may include joining a first generally planar sprocket portion having a plurality of connector portions extending transverse to the plane of the first sprocket portion, to a second generally planar sprocket portion, e.g., by fusing at least one of the connector portions to the second sprocket portion.

A rotatable connection between a first component and a second component, the rotatable connection comprising: a first connecting piece composed of metal and which is to penetrate the first component over at least the entire thickness of the first component, in which at an end facing the second component, the first connecting piece is welded to the second component.

A method for joining a first metal part (11) with a second metal part (12), the metal parts (11,12) having a solidus temperature above 1100 QC. The method comprises: applying a melting depressant composition (14) on a surface (15) of the first metal part (11), the melting depressant composition (14) comprising a melting depressant component that comprises at least 25 wt % boron and silicon for decreasing a melting temperature of the first metal part (11); bringing (202) the second metal part (12) into contact with the melting depressant composition (14) at a contact point (16) on said surface (15); heating the first and second metal parts (11,12) to a temperature above 1100 QC; and allowing a melted metal layer (210) of the first metal component (11) to solidify, such that a joint (25) is obtained at the contact point (16). The melting depressant composition and related products are also described.