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1. WO2019088075 - HEAT-RESISTANT ALLOY, AND REACTION TUBE

Publication Number WO/2019/088075
Publication Date 09.05.2019
International Application No. PCT/JP2018/040264
International Filing Date 30.10.2018
IPC
C22C 38/00 2006.1
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
C22C 19/05 2006.1
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
19Alloys based on nickel or cobalt
03based on nickel
05with chromium
C22C 30/00 2006.1
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
30Alloys containing less than 50% by weight of each constituent
C22C 38/58 2006.1
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
18containing chromium
40with nickel
58with more than 1.5% by weight of manganese
CPC
C22C 19/05
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
19Alloys based on nickel or cobalt
03based on nickel
05with chromium
C22C 30/00
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
30Alloys containing less than 50% by weight of each constituent
C22C 38/00
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
C22C 38/58
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
18containing chromium
40with nickel
58with more than 1.5% by weight of manganese
Applicants
  • 株式会社クボタ KUBOTA CORPORATION [JP]/[JP]
Inventors
  • 橋本 国秀 HASHIMOTO Kunihide
  • 遠城 暢平 ENJO Yohei
Agents
  • 特許業務法人 丸山国際特許事務所 MARUYAMA & CO.
Priority Data
2017-21360806.11.2017JP
2018-08280324.04.2018JP
2018-19481616.10.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) HEAT-RESISTANT ALLOY, AND REACTION TUBE
(FR) ALLIAGE RÉSISTANT À LA CHALEUR ET TUBE DE RÉACTION
(JA) 耐熱合金及び反応管
Abstract
(EN)
The present invention provides a heat-resistant alloy and a reaction tube having exceptional oxidation resistance, mechanical properties such as tensile malleability, and welding properties. This heat-resistant alloy comprises, in mass%, 0.35-0.7% of C, more than 0% and no more than 1.5% of Si, more than 0% and no more than 2.0% of Mn, 22.0-40.0% of Cr, 25.0-48.3% of Ni, 1.5-4.5% of Al, and 0.01-0.6% of Ti, the balance being Fe and unavoidable impurities. In addition, Pa < Ya, where Pa = -11.1 + 28.1 × C + 29.2 × Si - 0.25 × Ni - 45.6 × Ti, and Ya = -13.75 × Al + 63.75.
(FR)
La présente invention concerne un alliage résistant à la chaleur et un tube de réaction présentant une résistance à l'oxydation, des propriétés mécaniques (telles que la malléabilité à la traction) et des propriétés de soudage qui sont exceptionnelles. L'alliage résistant à la chaleur comprend, en % en masse, 0,35 à 0,7 % de C, plus de 0 % et au plus 1,5 % de Si, plus de 0% et au plus 2,0% de Mn, 22,0 à 40,0 % de Cr, 25,0 à 48,3 % de Ni, 1,5 à 4,5% d'Al, et 0,01 à 0,6% de Ti, le reste étant du Fe et des impuretés inévitables. En outre, Pa < Ya, où Pa = -11,1 + 28,1 × C + 29,2 × Si - 0,25 × Ni - 45,6 × Ti, et Ya = -13,75 × Al + 63,75.
(JA)
本発明は、耐酸化性にすぐれ、引張延性などの機械的特性、溶接性にすぐれる耐熱合金及び反応管を提供する。 本発明の耐熱合金は、質量%にて、C:0.35%~0.7%、Si:0%を超えて1.5%以下、Mn:0%を超えて2.0%以下、Cr:22.0%~40.0%、Ni:25.0%~48.3%、Al:1.5%~4.5%、Ti:0.01%~0.6%、及び、残部Fe及び不可避的不純物からなり、Pa=-11.1+28.1×C+29.2×Si-0.25×Ni-45.6×Ti、Ya=-13.75×Al+63.75としたときに、Pa<Yaである。
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