摘要:
A method of removing partially sintered powder (128) from an internal passage in a metal component (120) formed by electron beam additive manufacturing (EBAM) includes co-forming a solid wire cutter (130) in the passage during the EBAM forming process and removing partially sintered powder (128) from the cavity by extracting the cutter (130) from the cavity.
摘要:
A method for manufacturing a diamond wire (13) for cutting stone material, comprising the steps of: producing a plurality of composite bush-and-bead elements (22); inserting a steel cable (12) inside the plurality of composite bush-and-bead elements (22); splicing the two ends of the steel cable; and performing plastic-coating. The method is characterized in that it comprises a step where a reinforcing element (20) is positioned on at least one interruption point, said step being performed prior to the plastic-coating step.
摘要:
A shaped sawing wire adapted to cutting hard materials, comprises a wire having bends with segments in between. The wire has subsurface tensile residual stresses for keeping the shape of the wire while sawing. The sawing wire keeps its shape from the entry of the cut onward till the exit of the wire from the sawing process, which shows a significant improved cutting efficiency.
摘要:
An abrasive article including a substrate having an elongated body, a tacking layer overlying the substrate, and a first type of abrasive particle overlying the tacking layer and defining a first abrasive particle concentration at least about 10 particles per mm of substrate.
摘要:
A process for producing a substrate, which comprises processing an aluminum/graphite composite into plates having a thickness of 0.5-3 mm using a multi-wire saw under the following conditions (1) to (4): (1) the wires have abrasive grains bonded thereto which are one or more substances selected from diamond, C-BN, silicon carbide, and alumina and have an average particle diameter of 10-100 µm; (2) the wires have a diameter of 0.1-0.3 mm; (3) the wires are run at a rate of 100-700 m/min; and (4) the composite is cut at a rate of 0.1-2 mm/min. The aluminum/graphite composite has a surface roughness (Ra) of 0.1-3 µm, a thermal conductivity at 25 °C of 150-300 W/mK, a ratio of the maximum to the minimum value of thermal conductivity in three perpendicular directions of 1-1.3, a coefficient of thermal expansion at 25-150 °C of 4 × 10 -6 to 7.5 × 10 -6 /K, a ratio of the maximum to the minimum value of coefficient of thermal expansion in three perpendicular directions of 1-1.3, and a three-point bending strength of 50-150 MPa.
摘要:
Ein Sägeblatt für eine um eine Längsachse oszillierend angetriebene Werkzeugmaschine weist mindestens eine Schneide auf, an der zumindest teilweise Abrasivpartikel (34) vorgesehen sind. Das Sägeblatt ist insbesondere zum Sägen von Faserverbundwerkstof-fen geeignet. (Figur 7)