Abstract:
In a method for joining two, in particular rotationally symmetrical, metal parts (1, 2) by a tungsten inert gas (TIG) welding process, in a first step, the two metal parts (1, 2) to be joined are initially positioned relative to one another by a centering offset (7) in such a way that a narrow gap (4) is formed between them and a relief region (8) is created in the seam-bottom area. In a second step, the flanks (5, 6) of the metal parts (1, 2), which delimit the narrow gap (4), are joined together by welding beads (10) which fill the narrow gap (4), with a predetermined melt-through point (9) being formed. High-quality automatic welding is achieved in that the narrow gap (4) has a continuously constant width (a), in that the width (a) of the narrow gap (4) is selected such that the welding beads (10) lying one above the other each extend over the entire width (a) of the narrow gap (4), and in that the entire narrow gap (4) is filled with the welding beads (10) in fully automatic fashion.
Abstract:
A pressure casing has a plurality of casing shells (10a, b) which can be connected in a pressure-tight manner in a parting plane (11) by a flange (13). The casing shells (10a, b) are pressed together with sealing effect in the parting plane (11) in the region of the flange (13) by at least one threaded bolt (19; 19a-d) which extends through the flange (13) perpendicularly to the parting plane (11). A reduced thermal loading of the threaded bolts (19; 19a-d) of the flanged joint is achieved by the at least one threaded bolt (19; 19a-d) being exposed over a part of its length towards the inner side of the casing (10).
Abstract:
A method for influencing and monitoring the oxide layer on metallic components of hot CO2/H2O cycle systems, in particular of CO2/H2O gas turbine installations, in which a hydrocarbon-containing fuel is burnt with oxygen, and the excess CO2 and H2O formed is removed from the cycle system at a suitable location. To protect the oxide layer of the components which are under thermal load, an excess of oxygen is used, the level of which is dependent on the current state of the oxide layer, the state of the oxide layer being determined by periodic and/or continuous measurements.
Abstract translation:一种用于影响和监测热CO 2 / H 2 O 2循环系统的金属组分上的氧化物层的方法,特别是CO 2 / H 2燃气轮机装置,其中含烃燃料被氧气燃烧,并形成过量的CO 2 H 2和H 2 O 2 在合适的位置从循环系统中移除。 为了保护热负荷下的组分的氧化物层,使用过量的氧,其水平取决于氧化物层的当前状态,氧化物层的状态由周期性和/或连续性决定 测量。
Abstract:
A heat treatment process for material bodies made of a high-temperature-resistant iron-nickel superalloy of the type IN 706 comprises the following steps: solution annealing at approximately 965 to 995.degree. C. for 5 to 20 hours, stabilization annealing at approximately 775 to 835.degree. C. for 5 to 100 hours, and precipitation hardening at 715 to 745.degree. C. for 10 to 50 hours and at 595 to 625.degree. C. for 10 to 50 hours. A heat-treated material body of this kind, made of a high-temperature-resistant iron-nickel superalloy of the type IN 706 exhibits a crack growth rate of less than 0.05 mm/h and/or exhibits a minimum elongation of 2.5% without cracks at a constant strain rate of 0.05%/h and a temperature of 600.degree. C.
Abstract:
In a method for welding age-hardenable nickel-base alloys, a workpiece (5) made from an age-hardenable nickel-base alloy (1, 2) is welded with filler material of the same composition as the base material. The weld metal (3) which is formed in so doing is covered by a sealed covering layer (4) comprising a ductile material and the workpiece (5) is subjected to hot isostatic pressing (HIP).
Abstract:
A pressure casing has a plurality of casing shells (10a, b) which can be connected in a pressure-tight manner in a parting plane (11) by a flange (13). The casing shells (10a, b) are pressed together with sealing effect in the parting plane (11) in the region of the flange (13) by at least one threaded bolt (19; 19a-d) which extends through the flange (13) perpendicularly to the parting plane (11). A reduced thermal loading of the threaded bolts (19; 19a-d) of the flanged joint is achieved by the at least one threaded bolt (19; 19a-d) being exposed over a part of its length towards the inner side of the casing (10).
Abstract:
A method for influencing and monitoring the oxide layer on metallic components of hot CO2/H2O cycle systems, in particular of CO2/H2O gas turbine installations, in which a hydrocarbon-containing fuel is burnt with oxygen, and the excess CO2 and H2O formed is removed from the cycle system at a suitable location. To protect the oxide layer of the components which are under thermal load, an excess of oxygen is used, the level of which is dependent on the current state of the oxide layer, the state of the oxide layer being determined by periodic and/or continuous measurements.
Abstract:
Throughflow openings are provided for a cooling medium in a coolable component. The throughflow opening comprises an insert that reduces the size of the first opening cross-section to a second opening cross-section, and that is released from the first opening if the second opening cross-section becomes blocked as a result of a local temperature rise and a thermally unstable joining between the insert and the component, being mounted in a first opening. The present throughflow opening greatly reduces the risk of damage to components to be cooled, in particular turbine blades, as a result of fine throughflow openings becoming blocked.
Abstract:
Throughflow openings are provided for a cooling medium in a coolable component. The throughflow opening comprises an insert that reduces the size of the first opening cross-section to a second opening cross-section, and that is released from the first opening if the second opening cross-section becomes blocked as a result of a local temperature rise and a thermally unstable joining between the insert and the component, being mounted in a first opening. The present throughflow opening greatly reduces the risk of damage to components to be cooled, in particular turbine blades, as a result of fine throughflow openings becoming blocked.
Abstract:
In a method for joining two, in particular rotationally symmetrical, metal parts (1, 2) by a tungsten inert gas (TIG) welding process, in a first step, the two metal parts (1, 2) to be joined are initially positioned relative to one another by a centering offset (7) in such a way that a narrow gap (4) is formed between them and a relief region (8) is created in the seam-bottom area. In a second step, the flanks (5, 6) of the metal parts (1, 2), which delimit the narrow gap (4), are joined together by welding beads (10) which fill the narrow gap (4), with a predetermined melt-through point (9) being formed. High-quality automatic welding is achieved in that the narrow gap (4) has a continuously constant width (a), in that the width (a) of the narrow gap (4) is selected such that the welding beads (10) lying one above the other each extend over the entire width (a) of the narrow gap (4), and in that the entire narrow gap (4) is filled with the welding beads (10) in fully automatic fashion.