The present application relates to ferrous (steel) alloy compositions that can be printed by powder bed fusion additive manufacturing. The combination of printability and properties is achieved by formulating chemistries specifically for the powder bed fusion process.
A printed metallic part is provided. The alloy has the composition of Fe at 69.2 wt.% to 89.1 wt.%; Cr at 7.25 wt.% to 16.0 wt.%; Nb at 0.01 wt.% to 10.0 wt.%; Mo at 0.5 wt.% to 4.0 wt.%. C at 0.03 wt. % to 0.4 wt. % and optionally one or more of Ni, Cu, Si, W, Mn, N and B. The printed metallic part has a tensile strength of at least 1300 MPa, a yield strength of at least 700 MPa, an elongation of at least 4.0%, and a hardness of at least 45 HRC.
The present disclosure is directed at alloys and method for layer-by-layer deposition of metallic alloys on a substrate to produce a metallic part. Applications for the metallic parts include pumps, pump parts, valves, molds, bearings, cutting tools, filters or screens.
Metallic alloys and methods for the preparation of free-standing metallic materials in a layerwise manner. The resulting layerwise construction provides a metallic skeleton of selected porosity which may be infiltrated with a second metal to provide a free-standing material that has a volume loss of less than or equal to 130 mm3 as measured according to ASTM G65-04(2010).
Alloys and method for layer-by-layer deposition of metallic alloys on a substrate are provided. The resulting deposition provides for relatively high hardness metallic parts with associated wear resistance.. A method of layer-by-layer construction of a metallic part comprises supplying an alloy in particle form comprising Fe at 54.0 to 78.0 wt. %, B at 3.0 to 5.0 wt. %, Cr at 14.0 to 20.0 wt. %, C at 0.5 to 7.0 wt. %, optionally Mo at up to 11.0 wt. %, optionally Mn at up to 2.5 wt. %, optionally Nb at up to 4.5 wt. %, optionally Si at up to 2.0 wt. %, and optionally W at up to 7.0 wt. %; supplying a substrate; applying one or more layers of said alloy onto said substrate by melting said alloy into a molten state; and cooling and forming a solidified layer.
A nut fastener is provided for locking the nut to prevent inadvertent loosening of the nut. The nut fastener is particularly useful for tightening a wheel onto an axle. The nut fastener includes a nut, a collar and a retaining ring. The nut is unlocked by pushing on an engagement surface of the collar or by riding ratchet teeth over each other. When the collar is released, the collar locks against the nut to resist rotation of the nut.
F16B 39/26 - Locking of screws, bolts, or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object with spring washers fastened to the nut or bolt-head
F16B 39/12 - Locking of screws, bolts, or nuts in which the locking takes place after screwing down by means of locknuts
The present invention relates to a piling, comprising a pile that includes a pipe provided with a generally cylindrical shape, a first end, and a second end, a first end fitting located at the first end of the pipe, a second end fitting located at the second end of the pipe, the first end fitting is provided with an out-of-round shape that transmits torque and is dimensioned so that at least a portion fits within the second end fitting, and the second end fitting is provided with an out-of-round shape that transmits torque with at least a portion that fits about a portion of the first end fitting.
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