This invention concerns a method of improving the wear resistance of a cemented carbide. The method includes using fracture toughness as a selection criterion and selecting a cemented carbide which has a fracture toughness between about 6 and about 15 MPa.Math.m.sup.1/2. The method further includes applying a sacrificial coating to the cemented carbide and increasing the fracture toughness of the cemented carbide by creating a toughened surface layer using laser shock peening, thereby increasing its fracture resistance to fatigue and stress corrosion cracking. The invention also concerns a cutting tool or a cutting tool insert made from a cemented carbide and treated using the method according to the invention.

This invention concerns a method of improving the wear resistance of a cemented carbide. The method includes using fracture toughness as a selection criterion and selecting a cemented carbide which has a fracture toughness between about 6 and about 15 MPa.Math.m.sup.1/2. The method further includes applying a sacrificial coating to the cemented carbide and increasing the fracture toughness of the cemented carbide by creating a toughened surface layer using laser shock peening, thereby increasing its fracture resistance to fatigue and stress corrosion cracking. The invention also concerns a cutting tool or a cutting tool insert made from a cemented carbide and treated using the method according to the invention.

Heterogeneously dense (relative density) continuous one-piece insoluble reticulated foam material with a continuous relative density gradient and/or distinct and marked relative densities and methods of manufacture.

Heterogeneously dense (relative density) continuous one-piece insoluble reticulated foam material with a continuous relative density gradient and/or distinct and marked relative densities and methods of manufacture.

Provided is a method of manufacturing a magnet capable of using only a single pole, whereby a combination force between a permanent (or referred to as a magnet) and a yoke (or referred to as a shielding metal) can be improved without performing a manual bonding work therebetween and then the efficiency of subsequent processes, such as polishing and plating, after combination and completeness of a product can be improved.

The present invention relates to an additive manufacturing system and its methods. The system includes a material conveyor, an energy source, and a micro-forging device. The material conveyor is configured to convey material. The energy source is configured to direct an energy beam toward the material, the energy beam fuses at least a portion of the material to form a solidified portion. The micro-forging device is movable along with the material conveyor for forging the solidified portion, wherein the micro-forging device comprises a first forging hammer and a second forging hammer, the first forging hammer is configured to impact the solidified portion to generate a first deformation, and the second forging hammer is configured to impact the solidified portion to generate a second deformation greater than the first deformation.

The present invention relates to an additive manufacturing system and its methods. The system includes a material conveyor, an energy source, and a micro-forging device. The material conveyor is configured to convey material. The energy source is configured to direct an energy beam toward the material, the energy beam fuses at least a portion of the material to form a solidified portion. The micro-forging device is movable along with the material conveyor for forging the solidified portion, wherein the micro-forging device comprises a first forging hammer and a second forging hammer, the first forging hammer is configured to impact the solidified portion to generate a first deformation, and the second forging hammer is configured to impact the solidified portion to generate a second deformation greater than the first deformation.

A method for producing a component is disclosed. In a first step, a planar component layer is produced on a base surface from a metal material which is above the melting temperature thereof. In a second step, shear stresses are introduced into the component layer produced in the first step by a friction pin which rotates about a rotation axis and which is pressed with a predetermined force onto an outer surface of the component layer opposite the base surface and which is moved along the entire outer surface of the component layer. Finally, in a third step, the first step is repeated on the outer surface as a base surface.

Additive manufacturing (AM) methods and devices for high-melting-point materials are disclosed. In an embodiment, an additive manufacturing method includes the following steps. (S1) Slicing a three-dimensional computer-aided design model of a workpiece into multiple layers according to shape, thickness, and size accuracy requirements, and obtaining data of the multiple layers. (S2) Planning a forming path according to the data of the multiple layers and generating computer numerical control (CNC) codes for forming the multiple layers. (S3) Obtaining a formed part by preheating a substrate, performing a layer-by-layer spraying deposition by a cold spraying method, and heating a spray area to a temperature until the spraying deposition of all sliced layers is completed. (S4) Subjecting the formed part to a surface modification treatment by a laser shock peening method.

Additive manufacturing (AM) methods and devices for high-melting-point materials are disclosed. In an embodiment, an additive manufacturing method includes the following steps. (S1) Slicing a three-dimensional computer-aided design model of a workpiece into multiple layers according to shape, thickness, and size accuracy requirements, and obtaining data of the multiple layers. (S2) Planning a forming path according to the data of the multiple layers and generating computer numerical control (CNC) codes for forming the multiple layers. (S3) Obtaining a formed part by preheating a substrate, performing a layer-by-layer spraying deposition by a cold spraying method, and heating a spray area to a temperature until the spraying deposition of all sliced layers is completed. (S4) Subjecting the formed part to a surface modification treatment by a laser shock peening method.