Cutter blade, granulation apparatus, and method for manufacturing cutter blade
AssigneeThe Japan Steel Works, Ltd.
InventorRyusei TAYA
Life of this patent
Estimating the term…
Abstract
A cutter blade according to an embodiment includes: a cutting edge part configured to slide along a plate surface of a die plate and thereby to cut a material extruded from a hole formed in the plate surface onto the plate surface; and a base metal part joined to a joint surface of the cutting edge part, in which the base metal part includes, in a vicinity of the joint surface, a cutting edge component-detected part in which a cutting edge component is detected, the cutting edge component being a constituent of a cutting edge material contained in the cutting edge part; the base metal part includes, inside thereof, a cutting edge component under-detection-limit part.
Claims11
A cutter blade comprising:
- a cutting edge part configured to slide along a plate surface of a die plate and thereby to cut a material extruded from a hole formed in the plate surface onto the plate surface;
- and
- a base metal part joined to a joint surface of the cutting edge part, wherein
- the base metal part includes, in a vicinity of the joint surface, a cutting edge component-detected part in which a cutting edge component is detected, the cutting edge component being a constituent of a cutting edge material contained in the cutting edge part,
- the base metal part includes, inside thereof, a cutting edge component under-detection-limit part, the cutting edge component under-detection-limit part being a part in which a concentration of the cutting edge component is equal to or lower than a detection limit thereof, and
- the cutting edge component-detected part includes a part in which the concentration of the cutting edge component gradually decreases toward the cutting edge component under-detection-limit part.
A method for manufacturing a cutter blade, comprising the steps of:
- forming a film from a film forming material over at least a predetermined joint surface of a cutting edge part by plating or thermal spraying, the cutting edge part being configured to slide along a plate surface of a die plate and thereby to cut a material extruded from a hole formed in the plate surface onto the plate surface;
- disposing the cutting edge part in a cavity of a mold;
- charging a molten material into the cavity so that the molten material is brought into contact with the joint surface of the cutting edge part, the molten material being obtained by melting a base metal material contained in a base metal part;
- and
- solidifying the molten material and thereby joining the base metal part to the joint surface of the cutting edge part, wherein
- the step of joining the base metal part to the joint surface is performed so that:
- the base metal part includes, in a vicinity of the joint surface, a cutting edge component-detected part in which a cutting edge component is detected, the cutting edge component being a constituent of a cutting edge material contained in the cutting edge part;
- the base metal part includes, inside thereof, a cutting edge component under-detection-limit part, the cutting edge component under-detection-limit part being a part in which a concentration of the cutting edge component is equal to or lower than a detection limit thereof;
- and
- the cutting edge component-detected part includes a part in which the concentration of the cutting edge component gradually decreases toward the cutting edge component under-detection-limit part.
Dependencies are inferred from the claim text.