Cutting insert
AssigneeTaeguTec, Ltd.
InventorsKwon Hee Park, Dae Yeop Lee
Life of this patent
Estimating the term…
Abstract
A cutting insert has only cutting edge portion thereof made of SiC whisker reinforced ceramics brazed to the shank with active solder. This provides improved cutting performance by increased toughness and high strength of the SiC whisker reinforced ceramics without limitation in shape while reducing manufacturing costs. The cutting insert includes a cutting edge portion made of SiC whisker reinforced ceramics, and a shank to which the cutting edge portion is mounted. The cutting edge portion is brazed to the shank using an active solder, and the whiskers are disorderedly arranged and agglomerated in the cutting edge portion.
Claims18
A cutting insert, comprising:
- a cutting edge portion made of SiC whisker reinforced ceramics;
- and
- a shank to which the cutting edge portion is mounted,
- wherein the cutting edge portion is brazed to the shank using an active solder;
- and
- wherein the SiC whiskers are disorderedly arranged in the cutting edge portion.
A method of manufacturing a cutting insert, comprising:
- mixing SiC whisker reinforced ceramic powder uniformly;
- spheroidizing the mixed SiC whisker reinforced ceramic powder by spray drying;
- hot-pressing the spheroidized SiC whisker reinforced ceramic powder to be sintered to form a cutting edge portion comprising SiC whiskers disorderedly arranged therein;
- and
- brazing the cutting edge portion to a shank made of cemented carbide using an active solder.
A ceramic-tipped cutting insert, comprising:
- a cutting edge portion made of SiC whisker reinforced ceramics comprising 1.0 to 40 wt% of SiC whiskers;
- and
- a shank to which the cutting edge portion is mounted,
- wherein the cutting edge portion is brazed to the shank using an active solder;
- and
- wherein the SiC whiskers are randomly oriented in a ceramic matrix comprising Al2O3.
Dependencies are inferred from the claim text.