Abstract: [PROBLEM] The invention provides a roll for hot rolling process having various types of more excellent durability performances than conventional rolls, and provides also a method for manufacturing the same. [SOLUTION] A cladding layer 4 is formed on an outer circumference portion of a roll for hot rolling process 1, where the cladding layer 4 comprises: 0.5 to 0.7% by mass of C, 2.8 to 4.0% by mass of Si, 0.9 to 1.1% by mass of Cu, 1.4 to 1.6% by mass of Mn, 2.7 to 3.3% by mass of Ni, 13.5 to 14.5% by mass of Cr, 0.8 to 1.1% by mass of Mo, 0.9 to 1.1% by mass of Co, and 0.2 to 0.4% by mass of Nb, with a balance being Fe and inevitable impurities, and has a thickness of 5 mm or more.

Abstract: A novel briquetting roll having excellent performance such as providing both abrasion resistance and spalling resistance, which can also be manufactured at low cost and in a short period of time, and a method for manufacturing the same, are provided wherein the briquetting roll 1 integrally has an inner layer material 4 and an outer layer material 5, which comprise mutually different materials and are in contact with each other at the respective exterior and interior thereof, and has pockets 6 formed at the outer circumference of the outer layer material 5. A chromium-molybdenum forged steel material is used for the inner layer material 4 and a high-carbon high-speed steel material is used for the outer layer material 5. The outer layer material 5 may be formed on the outside of the inner layer material 4 by a continuous pouring process.

Abstract: A perovskite photoelectric conversion element includes a light transmitting substrate 11, on a front surface of which light is made incident, an oxide porous layer 13, formed on a rear surface of the light transmitting substrate 11 and with metal oxide particles 12 connected in a network, a metal porous layer 15, formed on a rear surface of the oxide porous layer 13 and with metal particles 14 connected in a network, a porous insulating layer 17, formed on a rear surface of the metal porous layer 15, a first electrode layer 18, formed on and across an entirety of a rear surface of the porous insulating layer 17, a second electrode layer 19, connected to the metal porous layer 15 and formed at a portion different from the first electrode layer 18 in a state of being insulated from the first electrode layer 18, and perovskite 20.

Abstract: [PROBLEM] The invention provides a roll for hot rolling process having various types of more excellent durability performances than conventional rolls, and provides also a method for manufacturing the same. [SOLUTION] A cladding layer 4 is formed on an outer circumference portion of a roll for hot rolling process 1, where the cladding layer 4 comprises: 0.5 to 0.7% by mass of C, 2.8 to 4.0% by mass of Si, 0.9 to 1.1% by mass of Cu, 1.4 to 1.6% by mass of Mn, 2.7 to 3.3% by mass of Ni, 13.5 to 14.5% by mass of Cr, 0.8 to 1.1% by mass of Mo, 0.9 to 1.1% by mass of Co, and 0.2 to 0.4% by mass of Nb, with a balance being Fe and inevitable impurities, and has a thickness of 5 mm or more.

Abstract: A method for manufacturing a mill roll including a preheating process for joining end portions 16 to 19 of a roll barrel member 13 and/or shaft materials 14, 15, and a friction pressure welding process strongly pressing and joining the shaft materials 14, 15 to a core material 11 after frictionally heating the joining end portions 16 to 19 by rotating the shaft materials 14, 15 while pressing to the core material 11, and a manufacturing apparatus including first and second holding means 29, 23 for the roll barrel member 13 and the shaft materials 14, 15, a rotating means rotating the shaft materials 14, 15, a pressing means 24 pressing the core material 11 and the shaft materials 14, 15 in an axial direction, and a preheating means 31 preheating the joining end portions 16 to 19 of the roll barrel member 13 and the shaft materials 14, 15.

Abstract: A perovskite photoelectric conversion element includes a light transmitting substrate 11, on a front surface of which light is made incident, an oxide porous layer 13, formed on a rear surface of the light transmitting substrate 11 and with metal oxide particles 12 connected in a network, a metal porous layer 15, formed on a rear surface of the oxide porous layer 13 and with metal particles 14 connected in a network, a porous insulating layer 17, formed on a rear surface of the metal porous layer 15, a first electrode layer 18, formed on and across an entirety of a rear surface of the porous insulating layer 17, a second electrode layer 19, connected to the metal porous layer 15 and formed at a portion different from the first electrode layer 18 in a state of being insulated from the first electrode layer 18, and perovskite 20.

Abstract: [Problem to be Solved] To provide a novel briquetting roll having excellent performance such as providing both abrasion resistance and spalling resistance, which can also be manufactured at low cost and in a short period of time, and a method for manufacturing the same. [Means for Solving the Problem] A briquetting roll 1 integrally has an inner layer material 4 and an outer layer material 5, which comprise mutually different materials and are in contact with each other at the respective exterior and interior thereof, and has pockets 6 formed at the outer circumference of the outer layer material 5. A chromium-molybdenum forged steel material is used for the inner layer material 4 and a high-carbon high-speed steel material is used for the outer layer material 5. The outer layer material 5 may be formed on the outside of the inner layer material 4 by a continuous pouring process.

Abstract: A method for manufacturing a mill roll including a preheating process for joining end portions 16 to 19 of a roll barrel member 13 and/or shaft materials 14, 15, and a friction pressure welding process strongly pressing and joining the shaft materials 14, 15 to a core material 11 after frictionally heating the joining end portions 16 to 19 by rotating the shaft materials 14, 15 while pressing to the core material 11, and a manufacturing apparatus including first and second holding means 29, 23 for the roll barrel member 13 and the shaft materials 14, 15, a rotating means rotating the shaft materials 14, 15, a pressing means 24 pressing the core material 11 and the shaft materials 14, 15 in an axial direction, and a preheating means 31 preheating the joining end portions 16 to 19 of the roll barrel member 13 and the shaft materials 14, 15.

Abstract: A method for manufacturing a mill roll including a preheating process for joining end portions 16 to 19 of a roll barrel member 13 and/or shaft materials 14, 15, and a friction pressure welding process strongly pressing and joining the shaft materials 14, 15 to a core material 11 after frictionally heating the joining end portions 16 to 19 by rotating the shaft materials 14, 15 while pressing to the core material 11, and a manufacturing apparatus including first and second holding means 29, 23 for the roll barrel member 13 and the shaft materials 14, 15, a rotating means rotating the shaft materials 14, 15, a pressing means 24 pressing the core material 11 and the shaft materials 14, 15 in an axial direction, and a preheating means 31 preheating the joining end portions 16 to 19 of the roll barrel member 13 and the shaft materials 14, 15.

Abstract: A method for manufacturing a mill roll including a preheating process for joining end portions 16 to 19 of a roll barrel member 13 and/or shaft materials 14, 15,and a friction pressure welding process strongly pressing and joining the shaft materials 14, 15 to a core material 11 after frictionally heating the joining end portions 16 to 19 by rotating the shaft materials 14, 15 while pressing to the core material 11, and a manufacturing apparatus including first and second holding means 29, 23 for the roll barrel member 13 and the shaft materials 14, 15, a rotating means rotating the shaft materials 14, 15, a pressing means 24 pressing the core material 11 and the shaft materials 14, 15 in an axial direction, and a preheating means 31 preheating the joining end portions 16 to 19 of the roll barrel member 13 and the shaft materials 14, 15.