摘要:
A tantalum or tantalum alloy which contains pure or substantially pure tantalum and at least one metal element selected from the group consisting of Ru, Rh, Pd, Os, Ir, Pt, Mo, W and Re to form a tantalum alloy that is resistant to aqueous corrosion. The invention also relates to the process of preparing the tantalum alloy.
摘要:
This invention relates to the field of nonferrous metallurgy, and specifically to the production of pseudo ²-titanium alloys comprising titanium and also the following alloying elements: molybdenum, vanadium, chromium, zirconium, iron and aluminum. The proposed alloy contains the following components: 25-27 % by mass of molybdenum; 25-27% by mass of vanadium; 14-16% by mass of chromium; 9-11% by mass of titanium; aluminium as the base, and iron and zirconium in the form of technically pure metals. The technical result of the invention is the possibility of producing a pseudo ²-titanium alloy with a highly homogeneous chemical composition, which is alloyed with high-melting elements, has a ‰¤6% content of aluminium and has stable high-impact properties in combination with high-impact strength.
摘要:
Bei einem Umschmelzofen muss das Gewicht einer Abschmelzelektrode laufend gemessen werden, um diese entsprechend ihres Abschmelzens nachstellen zu können. Dazu befindet sich auf einer Wägezelle (2) eine Plattform (3), auf der sowohl ein Elektrodenstangenantrieb (5) mit der Elektrodenstange (7) sowie ein Haltering (18) zum Halten des Hochstromkabels (13) angeordnet sind. Obwohl beim Absenken der die Abschmelzelektrode tragende Elektrodenstange (7) die Lage des Hochstromkabels (13) sich ändert, bleibt der gemessene Gewichtsanteil des Hochstromkabels (13) gleich, so dass mit der Wägezelle (2) letztendlich die Änderung des Gewichts der Abschmelzelektrode bestimmt werden kann.
摘要:
The invention relates to a universal joint suspension system for a re-melting furnace, said system being used to hold the electrode rod (3) mounting comprising the consumable electrode (4) cardanically in relation to the furnace body, thus allowing the mounting (6) to be tipped in any direction. The fundamental concept of the invention is that weighing cells (17) are arranged in the bearings of one shaft of the universal joint bearing (10), said cells determining the weight of the mounting (6) and the parts suspended therein, such that the weight of the consumable electrode (4) can be continuously derived from said determination process.
摘要:
Provided is a method of producing maraging steel and a method of making Ti-based inclusions finer and making the sizes of Ti-based inclusions that may differ at different locations in the steel ingot more uniform. A method of producing a maraging steel by using vacuum arc remelting that uses a vacuum arc remelting apparatus at least includes a steel ingot production step of producing a steel ingot by melting a consumable electrode made of maraging steel in a crucible of the apparatus, and in this method, the steel ingot production step includes cooling the steel ingot with rare gas introduced between the steel ingot and the crucible.
摘要:
Joining process 100, joined article 501, and process of fabricating a joined article 501 are disclosed. The joining process 100 includes providing a consumable electrode 101 comprising a first material 103 and a second material 105, melting the consumable electrode 101 by a current-induced melting or remelting, and re-solidifying the first material 103 and the second material 105 to form a dissimilar ingot 109 having a first region 119 being a re-solidification of the first material 103 and a second region 121 being a re-solidification of the second material 105. The joined article 501 includes the first region and the second region; the dissimilar ingot 109 at least partially defines the joined article. The process of fabricating includes providing the dissimilar ingot 109, positioning the dissimilar ingot 109 within a die, and applying force from the die to compress the dissimilar ingot 109, thereby forming the joined article 501.
摘要:
The Ni based forged alloy has a composition containing, on the basis of mass percent, Al: 0.5 to 1.0%, Cr: 17 to 21%, Fe: 17 to 19%, Nb: 4.5 to 5.5%, Ti: 0.8 to 1.3%, W: 3. 0 to 6.0%, B: 0.001 to 0.03%, C: 0.001 to 0.015%, and Mo: 1.0% or less, the balance being Ni and inevitable impurities. The alloy includes carbide grains of the contained elements. The carbide grains have an average grain diameter of 20 µm or less. Thus, a Ni based forged alloy is provided which is excellent in high-temperature fatigue property and has a moderate macrosegregation property.