公开(公告)号：US4876065A

公开(公告)日：1989-10-24

申请号：US196034

申请日：1988-05-19

申请人： Manfred Rockel ,  Ernst Wallis ,  Michael Kohler ,  Ulrich Heubner ,  Rolf Kirchheiner

发明人： Manfred Rockel ,  Ernst Wallis ,  Michael Kohler ,  Ulrich Heubner ,  Rolf Kirchheiner

IPC分类号： C22C30/00 ,  C22C38/00 ,  C22C38/42 ,  C22C38/44

CPC分类号： C22C38/001 ,  C22C38/42 ,  C22C38/44

摘要： Disclosed in an improvement in a known Ni-Cr-Fe alloy.The alloy of the invention contains 30 to 32% nickel; 26 to 28% chromium; 0.5 to 1.5% copper; 6 to 7% molybdenum; up to 2% manganese; up to 1.0% silicon; up to 0.2% aluminum; up to 0.03% carbon; 0.10 to 0.25% nitrogen; balance iron and usual impurities.The alloy of the invention has increased pitting corrosion potential and critical crevice corrosion and pitting corrosion temperatures whereas the resistance of the alloy to commercially pure phosphoric acid has not been decreased.

摘要翻译： 公开了一种已知的Ni-Cr-Fe合金的改进。 本发明的合金含有30〜32％的镍; 26〜28％铬; 0.5〜1.5％的铜; 6〜7％的钼; 高达2％的锰; 高达1.0％的硅; 高达0.2％的铝; 高达0.03％的碳; 0.10至0.25％氮气; 平衡铁和常规杂质。 本发明的合金具有增加的点腐蚀潜能和临界缝隙腐蚀和点腐蚀温度，而合金对商业纯磷酸的电阻没有降低。

公开(公告)号：US4906437A

公开(公告)日：1990-03-06

申请号：US313622

申请日：1989-02-21

申请人： Ulrich Heubner ,  Michael Kohler ,  Manfred Rockel ,  Ernst Wallis

发明人： Ulrich Heubner ,  Michael Kohler ,  Manfred Rockel ,  Ernst Wallis

IPC分类号： C22C19/05

CPC分类号： C22C19/055

摘要： For use in making components which are required to have a very high resistance to uniform corrosion and against pitting and crevice corrosion under very highly corrosive conditions encountered in up to date chemical process technology and environmental protection technology, for instance, in flue gas desulfurizing plants for concentrating sulfuric acid, and which are required to be manufactured satisfactorily by conventional hot and cold forming processes an alloy is employed which contains (in % by weight) 22.0 to 24.0 chromium, 15.0 to 16.5 molybdenum, up to 0.3% tungsten, up to 1.5% iron, up to 0.4% vanadium, 0.1 to 0.4% aluminum, 0.001 to 0.04% magnesium and 0.001 to 0.01 calcium, balance nickel and inevitable accompanying elements and impurities.

摘要翻译： 用于制造在最新的化学工艺技术和环境保护技术中遇到的非常高的腐蚀性条件下要求具有非常高的抗均匀腐蚀性和耐点蚀和缝隙腐蚀的部件，例如在烟道气脱硫装置中 浓缩硫酸，需要通过常规的冷热成型方法令人满意地制造，使用含有（重量％）22.0至24.0铬，15.0至16.5钼，至多0.3％钨，至多1.5的合金 ％铁，高达0.4％的钒，0.1至0.4％的铝，0.001至0.04％的镁和0.001至0.01的钙，余量为镍和不可避免的伴随元素和杂质。