Patent classifications
B22F1/108
SUPERHARD MATERIAL-CONTAINING OBJECTS AND METHODS OF PRODUCTION THEREOF
A superhard material-containing object is configured to have a controlled and repeatable three-dimensional geometry and/or shape. The object further includes a desired three-dimensional spatial variation in microstructure, grain size and/or composition. The superhard material is selected from the group consisting of diamond, boron-doped diamond and cubic boron nitride. A process for production of a superhard material-containing object from a powder of a superhard material, a binder and an optional additive, includes the steps of: (a) producing a feedstock of the superhard material and a polymer binder; (b) extruding one or more filaments from a granulated superhard material-binder feedstock; (c) preparing a printed superhard material-containing object using the one or more filaments; (d) subjecting the printed object to debinding to prepare a debindered object; and (e) sintering the debindered printed object to produce the superhard material-containing object.
SUPERHARD MATERIAL-CONTAINING OBJECTS AND METHODS OF PRODUCTION THEREOF
A superhard material-containing object is configured to have a controlled and repeatable three-dimensional geometry and/or shape. The object further includes a desired three-dimensional spatial variation in microstructure, grain size and/or composition. The superhard material is selected from the group consisting of diamond, boron-doped diamond and cubic boron nitride. A process for production of a superhard material-containing object from a powder of a superhard material, a binder and an optional additive, includes the steps of: (a) producing a feedstock of the superhard material and a polymer binder; (b) extruding one or more filaments from a granulated superhard material-binder feedstock; (c) preparing a printed superhard material-containing object using the one or more filaments; (d) subjecting the printed object to debinding to prepare a debindered object; and (e) sintering the debindered printed object to produce the superhard material-containing object.
MIXED POWDER FOR POWDER METALLURGY
A mixed powder for powder metallurgy comprises: an iron-based powder; and a lubricant, wherein the lubricant consists of a low-melting-point lubricant having a melting point of 86° C. or less and a high-melting-point lubricant having a melting point of more than 86° C., the low-melting-point lubricant has at least one of an amide group, an ester group, an amino group, and a carboxyl group, a ratio R1 of the low-melting-point lubricant to whole of the lubricant is 5 mass % or more and less than 90 mass %, a ratio R2 of a mass of a free lubricant to a mass of a binding lubricant is 0 or more and 15 or less, and an amount R3 of the low-melting-point lubricant contained as the free lubricant is less than 0.10 parts by mass with respect to 100 parts by mass of the iron-based powder.
MIXED POWDER FOR POWDER METALLURGY
A mixed powder for powder metallurgy comprises: an iron-based powder; and a lubricant, wherein the lubricant consists of a low-melting-point lubricant having a melting point of 86° C. or less and a high-melting-point lubricant having a melting point of more than 86° C., the low-melting-point lubricant has at least one of an amide group, an ester group, an amino group, and a carboxyl group, a ratio R1 of the low-melting-point lubricant to whole of the lubricant is 5 mass % or more and less than 90 mass %, a ratio R2 of a mass of a free lubricant to a mass of a binding lubricant is 0 or more and 15 or less, and an amount R3 of the low-melting-point lubricant contained as the free lubricant is less than 0.10 parts by mass with respect to 100 parts by mass of the iron-based powder.
Polymer ammunition having a MIM primer insert
One embodiment of the present invention provides a polymeric ammunition having a metal injection molded primer insert.
Polymer ammunition having a MIM primer insert
One embodiment of the present invention provides a polymeric ammunition having a metal injection molded primer insert.
Metal soft magnetic composite material inductor and preparation method thereof
A preparation method for a metal soft magnetic composite material inductor includes: smelting Fe, Si and Cr and then employing a water atomization or gas atomization means to fabricate an alloy powder; after sifting by particle size, mixing powders of different particle size levels and performing coating insulation, and performing post-granulation to obtain a metal soft composite material granulation powder; adopting the granulation powder to press a material cake, and transferring and molding same; adopting a hollow coil in a liquid-phase coating mold cavity, curing and demolding to obtain a semi-finished product, then continuously heating and curing the semi-finished product, and preparing an end electrode to obtain a finished inductor.
METAL POWDER, FEEDSTOCK, AND PREPARATION METHOD THEREFOR
A method for manufacturing metal powder is provided. The method includes preparing first metal powder, agglomerating the first metal powder to manufacture second metal powder in which the first metal powder is agglomerated, coating the second metal powder with an organic binder, and agglomerating and coarsening the second metal powder coated with the organic binder to manufacture third metal powder having higher flowability than the second metal powder coated with the organic binder.
METAL POWDER, FEEDSTOCK, AND PREPARATION METHOD THEREFOR
A method for manufacturing metal powder is provided. The method includes preparing first metal powder, agglomerating the first metal powder to manufacture second metal powder in which the first metal powder is agglomerated, coating the second metal powder with an organic binder, and agglomerating and coarsening the second metal powder coated with the organic binder to manufacture third metal powder having higher flowability than the second metal powder coated with the organic binder.
POLYMER AMMUNITION HAVING A MIM PRIMER INSERT
One embodiment of the present invention provides a polymeric ammunition having a metal injection molded primer insert.