B21D35/005

HOT-PRESSED MEMBER AND METHOD FOR MANUFACTURING SAME, AND COLD-ROLLED STEEL SHEET FOR HOT PRESSING AND METHOD FOR MANUFACTURING SAME

Disclosed is a hot-pressed member that can exhibit very high tensile strength after hot pressing as high as TS: 1780 MPa or more, excellent resistance to resistance welding cracking, and excellent delayed fracture resistance after resistance welding by having a specific chemical composition, and a microstructure such that a prior austenite average grain size is 7 m or less, a volume fraction of martensite is 90% or more, and at least 5 Nb-based precipitates having a grain size of less than 0.08 m are present on average per 100 m.sup.2 of a cross section parallel to a thickness direction of the member within a range of 100 m in the thickness direction from a surface of the member, and such that a Ni diffusion region having a thickness of 0.5 m or more is present in a surface layer of the member.

Machining process for production of titanium motor housing
10799934 · 2020-10-13 ·

The present invention discloses a machining process for manufacturing a motor housing by using metal titanium, including the following machining steps: Calendar process is adopted, use stamping equipment to stamp the base of the titanium motor housing, apply lubricant on the surface of the die before stamping, and attach a lubricating film on the surface of metal titanium to be stamped; Calendar process is adopted, use stamping equipment to stamp the barrel-shaped titanium motor housing, apply lubricant on the surface of the die before stamping, and attach a lubricating film on the surface of metal titanium to be stamped, and after stamping, a barrel-shaped housing with a barrel depth to port diameter ratio of 1.21.8:1 is obtained; Spray and cleanse the housing base obtained from stamping in S1 and the barrel-shaped motor housing obtained from stamping in S2; Assemble the housing base and the barrel-shaped housing obtained in S3 to form the motor housing product; Inspect the assembled motor housing obtained in S4.

STEEL SHEET FOR HOT PRESS FORMED MEMBER

The present invention relates to a hot press formed member. A hot press formed member according to one aspect of the present invention comprises a steel sheet; and a plating layer on the steel sheet, wherein a number of voids per 1000 m.sup.2 of an area from an interface between the plating layer and the steel sheet to 15 m is zero and wherein a concentration gradient at a section having an Fe content of 45% to 80% in the plating layer in a thickness direction from a surface of the plating layer according to a result of GDS analysis is 7 wt %/m or less.

MANUFACTURING METHOD

A method of manufacturing a component, the method including a maraging steel blank with an initial shape; and performing an incremental cold forming operation on the maraging steel blank, wherein the incremental cold forming operation reduces a thickness of the maraging steel blank.

ALUMINUM ALLOY COMPONENT

To suppress occurrence of stress corrosion cracking in a weld due to tensile residual stress generated in a web or a middle rib in case of bend forming of an aluminum alloy extrusion having the weld on the web or/and the middle rib. In bend forming of the aluminum alloy extrusion, a peak position of tensile residual stress generated in the middle rib exists in a region other than the vicinity of the weld. Since the peak position is away from the weld by a distance, tensile residual stress in the weld is reduced, making it possible to suppress occurrence of stress corrosion cracking.

Panel-like formed product and manufacturing method thereof

A manufacturing method includes a preparing step, an intermediate pressing step, a heating step, and a hot stamping step. In the preparing step, a blank is prepared. In the intermediate pressing step, press working is applied to the blank to produce an intermediate formed product. In the heating step, the intermediate formed product is heated. In the hot stamping step, press working is applied to the intermediate formed product to produce a panel-like formed product. In the hot stamping step, a machine including a first die, a second die, a punch, and a blank holder is used. While the intermediate formed product is pinched between the first die and the punch, the second die and the blank holder are moved relative to the first die and the punch, and thereby, the panel-like formed product is produced.

Machining Process for Production of Titanium Motor Housing
20200269306 · 2020-08-27 ·

The present invention discloses a machining process for manufacturing a motor housing by using metal titanium, including the following machining steps: Calendar process is adopted, use stamping equipment to stamp the base of the titanium motor housing, apply lubricant on the surface of the die before stamping, and attach a lubricating film on the surface of metal titanium to be stamped; Calendar process is adopted, use stamping equipment to stamp the barrel-shaped titanium motor housing, apply lubricant on the surface of the die before stamping, and attach a lubricating film on the surface of metal titanium to be stamped, and after stamping, a barrel-shaped housing with a barrel depth to port diameter ratio of 1.21.8:1 is obtained; Spray and cleanse the housing base obtained from stamping in S1 and the barrel-shaped motor housing obtained from stamping in S2; Assemble the housing base and the barrel-shaped housing obtained in S3 to form the motor housing product; Inspect the assembled motor housing obtained in S4.

METHOD FOR PRODUCING A MOTOR VEHICLE COMPONENT FROM A 6000-SERIES ALUMINUM ALLOY
20200248292 · 2020-08-06 ·

The present disclosure relates to a method for producing a motor vehicle component from a 6000-series aluminum alloy having the following method steps: providing a blank made of a 6000-series aluminum alloy, rapid heating of the blank by means of contact plates to a temperature between 450 C. and 600 C. in a time less than 20 seconds, ending of the heating procedure and optional homogenizing when a grain size between 20 and 50 m has resulted, quenching the blank thus tempered to a temperature less than or equal to 100 C., in a time less than 20 seconds, wherein the rapid heating and quenching of the blank is carried out in a total time of less than 50 seconds, applying a lubricant, at 20 C. to 100 C., forming the cooled blank in a forming tool, wherein the time between beginning the rapid heating and beginning the forming is less than 45 seconds, aging.

Jaw members and methods of manufacture

A jaw member for use on a surgical stapling instrument includes a cartridge assembly and a cartridge housing each having an arcuate configuration. The cartridge assembly includes a surface configured to engage tissue and a plurality of rows of fastener retaining slots extending along a length of the cartridge assembly. The cartridge housing defines a channel configured for receipt of the cartridge assembly. The cartridge housing includes a base portion and a plurality of tabs. The base portion has a concave inner edge and a convex outer edge. The tabs extend from the concave inner edge and the convex outer edge. The tabs are spaced from one another along a length of the cartridge housing.

STEEL SHEET FOR HOT PRESS FORMED MEMBER HAVING EXCELLENT COATING ADHESION AND MANUFACTURING METHOD FOR THE SAME
20200190620 · 2020-06-18 ·

Provided is a steel sheet for a hot press formed member having excellent coating adhesion, and a method for manufacturing the same. A steel sheet for hot press forming is an aluminum alloy plated steel sheet, wherein an average Fe content in a plating layer may be 40 wt % or more, and a concentration gradient of a section having a Fe content of 45 wt % to 80 wt % in the plating layer may 7 wt %/m or less of a concentration gradient at a section having an Fe content of 45% to 80% in the plating layer in a thickness direction from a surface of the plating layer according to a result of GDS analysis.