Nisshin Steel Co., Ltd.

Nippon Steel Nisshin Co., Ltd.

Nippon Steel Corporation

Katsunari Norita

Kazunori Ozawa

Norimasa Miura

Keiji Izumi

Yuugo Oota

Tomoyuki Nagatsu

Keita Noguchi

Motonori Kurotaki

Shuichi Sugita

Shinji Kodama

Kenichi Okubo

Jun Kurobe

Yutaka Mikazuki

Sho Matsui

Kyohei Miyake

Setsuko Koura

Takashi Oke

Yusuke Honma

Yasunori Ozawa

The present invention provides a method for testing strength of a metal roofing material, the metal roofing material comprising: a front substrate made of a metal sheet; a back substrate arranged on the back side of the front substrate; and a core material filled between the front substrate and the back substrate, the method comprising the steps of: tightening the metal roofing materialto a base; and applying a loadL for uplifting an end portionE of the metal roofing materialtightened to the baseto the end portionE and measuring an uplift amount of the end portionE corresponding to the loadL.

Strength test method for metal roofing material, strength test equipment, and virtual strength test program

A metallic roof materialaccording to the present invention comprises: a front substratemade of a metal sheet, the front substratecomprising a body portionformed into a box shape; a back substratearranged on a back side of the front substrateso as to cover an opening of the body portionand a core materialfilled between the body portionand the back substratethe metallic roof materialbeing tightened to a roof base by driving at least one tightening member into the body portionwherein a top plate portionof the body portioncomprises at least one protruding ribcomprised of at least one protrusiondisposed along a side of a polygon or along a circle, and wherein the metallic roof materialis configured such that the tightening member is driven into an inner regionof the protruding rib

Metallic roof material and roofing method using same

A lithium-ion secondary-battery case that allows bonding without weld spatter and has high strength against external force acting on the battery case, and a method for manufacturing the lithium-ion secondary-battery case are provided. Specifically, an austenitic stainless steel foil is used for a cup component (), and a two-phase stainless steel having an austenite transformation start temperature Ain a temperature increase process at 650&#xb0; C. to 950&#xb0; C. and an austenite and ferrite two-phase temperature range of 880&#xb0; C. and higher, is used for a cover component (), and the diffusion bonding is proceeded while accompanied by grain boundary movement upon transformation of the two-phase steel from a ferrite phase into an austenite phase within a heating temperature range of 880&#xb0; C. to 1080&#xb0; C.

Lithium-ion secondary-battery case and manufacturing method therefor

The present invention relates to a metal roofing materialthat is arranged on an eave-side metal roofing material in an eave-ridge directionof a roof so as to overlap the metal roofing material and the eave-side metal roofing material. The metal roofing material includes a front substratemade of a metal sheet and including a body portionformed in a box shape; a back substratearranged on the back side of the front substrateso as to cover an opening of the body portion; a core materialfilled between the body portionand the back substrate; and at least one plate reinforcing memberthat is embedded in the core materialat a position closer to the back substratethan a top plate of the body portionor that is disposed in contact with the outer surface of the back substrate

Metal roofing material and roofing method

A body portionof a front substrateincludes first side surfacesand second side surfaces, each of the second side surfacesbeing arranged at a position protruding toward the outer side along a width directionthan the first side surfaceEach of the first side surfacesincludes a side flangeA protruding width of the side flangefrom the first side surfaceis equal to or less than a protruding width of the second side surfacefrom the first side surfaceA metal roofing memberis arranged on a roof base while abutting at least the second side surfaceagainst a second side surface of other metal roofing member.

Metal roofing material, and roofing structure and roofing method using same

A metal roofing memberis disposed side by side with another metal roofing member on a roof base. The metal roofing memberhas a box-shaped front substratemade of a metal sheet, a rear substratedisposed on the rear side of the front substrate, so as to cover an opening of the front substrate, and a core materialmade from a foam resin and filled in between the front substrateand the rear substrate. The front substrateresults from forming the metal sheet into a box shape. The front substratehas a side wall portion that is continuous in the circumferential direction and is formed by performing drawing or bulging processing on the metal sheet. The front substratehas a height of 4 mm to 8 mm.

Metal roofing member, production method thereof, roofing structure and roofing method

A metal roofing memberhas a front substrate, a rear substrateand a core material. The front substrateis made of a metal sheet. In the front substrate, a box-shaped body portionand a flange portionextending from the body portionare provided. The flange portionis formed by folding back, over the rear side of the front substrate, of a metal sheetextending outwards of the body portionin a directionperpendicular to a height directionof the body portion, from a lower edge of the body portion, in such a manner that the metal sheetwraps around the rear substrate. The metal roofing memberis disposed on a roof base, with the flange portionbutting against a flange portionof another metal roofing member.

Metal roofing member, and roofing structure and roofing method using same

An austenitic stainless steel foilwith a thickness equal to or less than 300 &#x3bc;m is disposed to face a punch, and the stainless steel foilis subjected to drawing in a state in which an annular regionof the stainless steel foilthat is in contact with a shoulder portionof the punchis set to a temperature up to 30&#xb0; C. and an external regionoutside the annular regionis set to a temperature of from 40&#xb0; C. to 100&#xb0; C.

Warm working method for stainless steel foil and mold for warm working

In method for manufacturing an external cladding for a laminate battery according to the present invention, austenitic stainless steel foil having a thermoplastic resin layer on one of a front surface and a rear surface and a lubricating film on the other surface is used as a material, the stainless steel foil is disposed such that the surface provided with the thermoplastic resin layer opposes a punch, and drawing is implemented on the stainless steel foil without using lubricating oil in a condition where an annular region of the stainless steel foil, which is contacted by a shoulder portion of the punch, is set at a temperature of 20&#xb0; C. or lower, and an exterior region on an exterior of the annular region is set at a temperature between 40&#xb0; C. and 100&#xb0; C.

Growing community of inventors

Tokyo, Japan

Katsunari Norita