Abstract: An inner punch (11), an outer punch (12), and a die (13) are disposed on the same center axis (10). The outer punch (12) is disposed so as to be apart from the inner punch (11) in a radial direction perpendicular to the center axis (10) by a first space S1 which is larger than a plate thickness T of a cup longitudinal wall portion (A2). Further, an inner peripheral surface of the outer punch (12) has, on its die (13) side, a punch shoulder R portion (12A) widening as it goes toward the die (13).

Abstract: A press mold includes an inner punch (23), an intermediate punch (24) disposed along an outer periphery of the inner punch (23) and having an intermediate punch inclined portion (24a) at a leading end, an outer punch (25) disposed along an outer periphery of the intermediate punch (24), and a die (27) having a die inclined portion (27a) facing the intermediate punch inclined portion (24a), central axes (20) of all of which are coaxially disposed. While a bottom portion of a bottomed container (22) is constrained by the inner punch (23) and the die (27), an end portion of the bottomed container (22) is pressed by the outer punch (25), and the intermediate punch (24) is moved in a direction opposite a direction in which the outer punch (25) is pressed, whereby a bottomed container inclined portion (22a) of the bottomed container (22) sandwiched by the intermediate punch inclined portion (24a) and the die inclined portion (27a) is thickened.

Abstract: While a compression part (B1) in a bottom wall part of a cup-shaped workpiece (B) is compressed by an inner punch (11) and an inner die (14) and moved in a direction to get away from an intermediate die (15), the inner die (14) is pushed toward the inner punch (11); and a compression part (B2) being an outer end portion in a radial direction of the workpiece (B) is compressed by an outer punch (13) and an outer die (16) and moved in an direction to approach the intermediate die (15), to thereby suppress the workpiece (B) in the compression part (B2) from material-flowing in a direction to get away from a central axis (10), whereby thickness reduction processing of the compression part (B1) and thickness increase processing of a vertical wall part (B3) of the workpiece (B) sandwiched by an intermediate punch (12) and the inner die (15) and a vertical wall part (B4) of the workpiece (B) sandwiched by the intermediate punch (12) and an outer die (16) are performed.

Abstract: Exemplary embodiments of a press-forming device, press-forming method, computer program/software arrangement and storage medium can be provided. The exemplary press-forming device can include a material characteristic input configured to input material characteristics. A state variable detector can be configured to measure a state variable comprising a metal mold distortion amount. A processing condition computer arrangement can be configured to determine from a first moment to a second moment at least one particular processing condition. Further, a processing condition controller can be configured to control the at least one processing condition from processing conditions.

Abstract: The present invention releases a method of producing a metal separator for a solid polymer fuel cell by stainless steel, titanium, or titanium alloy during which securing lower cost and mass producibility by using a material having a high workability to form a complicated shape by a high productivity, then using an inexpensive blast process to drive a conductive substance into the surface of the metal separator member, that is, provides a stainless steel, titanium, or titanium alloy solid polymer fuel cell separator comprised of stainless steel, titanium, or titanium alloy in the surface of which a low ion release conductive substance is buried, having an arithmetic mean roughness (Ra) of the separator surface of 0.5 to 5.0 ?m, having a 10-point mean roughness (Rz) of 3 to 20 ?m, having an average spacing of surface relief shapes (Sm) of 300 ?m or less, having values of a warp rate and twist rate of a separator of 0.

Abstract: Exemplary embodiments of a press-forming device, press-forming method, computer program/software arrangement and storage medium can be provided. The exemplary press-forming device can include a material characteristic input configured to input material characteristics. A state variable detector can be configured to measure a state variable comprising a metal mold distortion amount. A processing condition computer arrangement can be configured to determine from a first moment to a second moment at least one particular processing condition. Further, a processing condition controller can be configured to control the at least one processing condition from processing conditions.

Abstract: Exemplary embodiments of a press-forming device, press-forming method, computer program/software arrangement and storage medium can be provided. The exemplary press-forming device can include a material characteristic input configured to input material characteristics. A state variable detector can be configured to measure a state variable comprising a metal mold distortion amount. A processing condition computer arrangement can be configured to determine from a first moment to a second moment at least one particular processing condition. Further, a processing condition controller can be configured to control the at least one processing condition from processing conditions.

Abstract: The present invention releases a method of producing a metal separator for a solid polymer fuel cell by stainless steel, titanium, or titanium alloy during which securing lower cost and mass producibility by using a material having a high workability to form a complicated shape by a high productivity, then using an inexpensive blast process to drive a conductive substance into the surface of the metal separator member, that is, provides a stainless steel, titanium, or titanium alloy solid polymer fuel cell separator comprised of stainless steel, titanium, or titanium alloy in the surface of which a low ion release conductive substance is buried, having an arithmetic mean roughness (Ra) of the separator surface of 0.5 to 5.0 ?m, having a 10-point mean roughness (Rz) of 3 to 20 ?m, having an average spacing of surface relief shapes (Sm) of 300 ?m or less, having values of a warp rate and twist rate of a separator of 0.

Abstract: The present invention releases a method of producing a metal separator for a solid polymer fuel cell by stainless steel, titanium, or titanium alloy during which securing lower cost and mass producibility by using a material having a high workability to form a complicated shape by a high productivity, then using an inexpensive blast process to drive a conductive substance into the surface of the metal separator member, that is, provides a stainless steel, titanium, or titanium alloy solid polymer fuel cell separator comprised of stainless steel, titanium, or titanium alloy in the surface of which a low ion release conductive substance is buried, having an arithmetic mean roughness (Ra) of the separator surface of 0.5 to 5.0 ?m, having a 10-point mean roughness (Rz) of 3 to 20 ?m, having an average spacing of surface relief shapes (Sm) of 300 ?m or less, having values of a warp rate and twist rate of a separator of 0.

Abstract: The present invention releases a method of producing a metal separator for a solid polymer fuel cell by stainless steel, titanium, or titanium alloy during which securing lower cost and mass producibility by using a material having a high workability to form a complicated shape by a high productivity, then using an inexpensive blast process to drive a conductive substance into the surface of the metal separator member, that is, provides a stainless steel, titanium, or titanium alloy solid polymer fuel cell separator comprised of stainless steel, titanium, or titanium alloy in the surface of which a low ion release conductive substance is buried, having an arithmetic mean roughness (Ra) of the separator surface of 0.5 to 5.0 ?m, having a 10-point mean roughness (Rz) of 3 to 20 ?m, having an average spacing of surface relief shapes (Sm) of 300 ?m or less, having values of a warp rate and twist rate of a separator of 0.

Abstract: Exemplary embodiments of a press-forming device are provided. The exemplary press-forming device can include a material characteristic input configured to input the material characteristics out of sheet thickness, yield strength, 0.2% proof stress, tensile strength, elongation, n value, r value, stress-strain relation equation, hardness, temperature, surface roughness, friction coefficient and/or lubricant film thickness of the material. A state variable detector can also be provided for measuring at least one state variable out of punch reaction, metal mold temperature, metal mold distortion amount, work piece deformation amount, and work piece temperature during forming.