A method for manufacturing a blisk includes an intermediate product molding step of molding a blisk intermediate product including a circular disk-corresponding part, a plurality of rotor blade-corresponding parts, and bridges each connecting a front edge of one of each pair of the rotor blade-corresponding parts adjacent to each other and a rear edge of the other one of the rotor blade-corresponding parts. The method for manufacturing the blisk further includes a disk finishing step of cutting the disk-corresponding part so as to finish the disk-corresponding part into the disk in a product form, and a rotor blade finishing step of cutting each bridge so as to finish the respective rotor blade-corresponding parts into the respective rotor blades in a product form.

A method for manufacturing a blisk includes an intermediate product molding step of molding a blisk intermediate product including a circular disk-corresponding part, a plurality of rotor blade-corresponding parts, and bridges each connecting a front edge of one of each pair of the rotor blade-corresponding parts adjacent to each other and a rear edge of the other one of the rotor blade-corresponding parts. The method for manufacturing the blisk further includes a disk finishing step of cutting the disk-corresponding part so as to finish the disk-corresponding part into the disk in a product form, and a rotor blade finishing step of cutting each bridge so as to finish the respective rotor blade-corresponding parts into the respective rotor blades in a product form.

In a forming apparatus, movable journal dies and stationary journal dies retain rough journal portions of a preform blank therebetween, and reference crank pin die and movable crank pin dies contact rough crank pin portions thereof, and in this state, the movable journal dies and the movable crank pin dies are moved axially toward the reference crank pin die and the reference crank pin die and the movable crank pin dies are moved in a direction perpendicular to an axial direction. With this, weighted rough arm portions are axially compressed to reduce their thickness to that of weighted arms of a forged crankshaft, and the rough crank pin portions are pressed in the direction perpendicular to the axial direction to increase an amount of eccentricity to that of the crank pins of the forged crankshaft.

In a forming apparatus, movable journal dies and stationary journal dies retain rough journal portions of a preform blank therebetween, and reference crank pin die and movable crank pin dies contact rough crank pin portions thereof, and in this state, the movable journal dies and the movable crank pin dies are moved axially toward the reference crank pin die and the reference crank pin die and the movable crank pin dies are moved in a direction perpendicular to an axial direction. With this, weighted rough arm portions are axially compressed to reduce their thickness to that of weighted arms of a forged crankshaft, and the rough crank pin portions are pressed in the direction perpendicular to the axial direction to increase an amount of eccentricity to that of the crank pins of the forged crankshaft.

In a forming apparatus, stationary journal dies (10U, 10B) and movable journal dies (11U, 11B) each hold and retain rough journal portions (Ja) of a preform blank (4) therebetween, and crank pin dies (12) contacts rough crank pin portions (Pa) thereof, and in this state, the movable journal dies (11U, 11B) are moved axially toward the stationary journal dies (10U, 10B) and the crank pin dies (12) are moved in the same axial direction and in an eccentric direction. With this, weighted rough arm portions (Aa) are axially compressed to reduce their thickness to that of weighted arms of a forged crankshaft, and the rough crank pin portions (Pa) are pressed in the eccentric direction to increase the amount of eccentricity to that of the crank pins of the forged crankshaft.

In a forming apparatus, stationary journal dies (10U, 10B) and movable journal dies (11U, 11B) each hold and retain rough journal portions (Ja) of a preform blank (4) therebetween, and crank pin dies (12) contacts rough crank pin portions (Pa) thereof, and in this state, the movable journal dies (11U, 11B) are moved axially toward the stationary journal dies (10U, 10B) and the crank pin dies (12) are moved in the same axial direction and in an eccentric direction. With this, weighted rough arm portions (Aa) are axially compressed to reduce their thickness to that of weighted arms of a forged crankshaft, and the rough crank pin portions (Pa) are pressed in the eccentric direction to increase the amount of eccentricity to that of the crank pins of the forged crankshaft.

Provided is a cold work tool material capable of reducing dimensional changes which occur, due to heat treatment, in the longitudinal direction of the material during quenching and tempering. This cold work tool material is drawn through hot working, has an annealed structure including carbides, and is used after being quenched and tempered, wherein, in the annealed structure which is formed in a cross section parallel to a drawing direction due to the hot working of the cold work tool material, the standard deviation in the degree of orientation of carbides Oc, as determined by equation (1) below, is 6.0 or more for carbides having a circle equivalent diameter of 5.0 m or greater as observed in the annealed structure in the cross section at right angle to a direction perpendicular to the drawing direction. Oc=D . . . (1), where D represents the circle equivalent diameter (m) of the carbide, and represents the angle (rad) between the major axis of an approximate ellipse of the carbide and the drawing direction. A cold work tool using the cold work tool material and a method for manufacturing the same are also provided.

The invention relates to a method for measuring a long profile (2), in particular one at an increased temperature, wherein a cross-section of the long profile (2) is determined, wherein the long profile (2) is measured using a light section sensor (4) that is moveably mounted on a swivel device (3). The invention also relates to a device for measuring a long profile (2), in particular one at an increased temperature, comprising a measuring device for determining a cross-section of the long profile (2), wherein a swivel device (3) is provided and the measuring device is formed as a light section sensor (4), wherein the light section sensor (4) is moveably mounted on the swivel device (3). The invention further relates to a use of a device (1) of this type.

The invention relates to a method for measuring a long profile (2), in particular one at an increased temperature, wherein a cross-section of the long profile (2) is determined, wherein the long profile (2) is measured using a light section sensor (4) that is moveably mounted on a swivel device (3). The invention also relates to a device for measuring a long profile (2), in particular one at an increased temperature, comprising a measuring device for determining a cross-section of the long profile (2), wherein a swivel device (3) is provided and the measuring device is formed as a light section sensor (4), wherein the light section sensor (4) is moveably mounted on the swivel device (3). The invention further relates to a use of a device (1) of this type.

A method of manufacturing an iron type golf club head, including forming an iron type golf club head blank, the iron type golf club head blank having an oversized hosel portion and an oversized body portion, the iron type golf club head blank configured to accommodate a plurality of iron type golf club heads, each iron type golf club head having a unique loft angle; and removing material from said oversized body portion of said iron type golf club head blank.