초록 ▼

A process for diffusion bonding of cracks and other gaps in high-temperature nickel and cobalt alloy components is described. The gap is filled with alloy powder matching the substrate alloy, or with an alloy of superior properties, such as MAR-M 247, MAR-M 247LC, or CM 247LC. A braze containing a m

A process for diffusion bonding of cracks and other gaps in high-temperature nickel and cobalt alloy components is described. The gap is filled with alloy powder matching the substrate alloy, or with an alloy of superior properties, such as MAR-M 247, MAR-M 247LC, or CM 247LC. A braze containing a melting point depressant is either mixed into the alloy powder or applied over it. The depressant is preferably hafnium, zirconium, or low boron. The component is heated for 15-45 minutes above the melting point of the braze, which fills the spaces between the alloy powder particles. The component is diffused at a temperature above or below the liquidus of the braze and solution heat-treated and aged at a temperature at which the braze and alloy mixture in the gap is solid, but the depressant diffuses away.

대표청구항 ▼

A process for diffusion bonding of cracks and other gaps in high-temperature nickel and cobalt alloy components is described. The gap is filled with alloy powder matching the substrate alloy, or with an alloy of superior properties, such as MAR-M 247, MAR-M 247LC, or CM 247LC. A braze containing a m

A process for diffusion bonding of cracks and other gaps in high-temperature nickel and cobalt alloy components is described. The gap is filled with alloy powder matching the substrate alloy, or with an alloy of superior properties, such as MAR-M 247, MAR-M 247LC, or CM 247LC. A braze containing a melting point depressant is either mixed into the alloy powder or applied over it. The depressant is preferably hafnium, zirconium, or low boron. The component is heated for 15-45 minutes above the melting point of the braze, which fills the spaces between the alloy powder particles. The component is diffused at a temperature above or below the liquidus of the braze and solution heat-treated and aged at a temperature at which the braze and alloy mixture in the gap is solid, but the depressant diffuses away. umns, with at least a first substantially horizontal beam having a top surface which defines a plurality of slots; and at least one first connector clip, including a main body defining a top surface and a bottom surface and including left and right substantially L-shaped arms extending downwardly and rearwardly from said main body, wherein each of the L-shaped arms includes a free end portion extending rearwardly from said main body; said first connector clip being mounted on said first substantially horizontal beam, with the left and right arms of said first connector clip extending through the corresponding slots in said first substantially horizontal beam; wherein the respective arms and slots are sized so that said first connector clip can only be installed on its respective first beam by orienting the first clip substantially vertically to permit the free end portions of the arms to enter the slots and then rotating the first clip to a substantially horizontal position; and said first clip can only be removed from its respective beam by rotating the first clip to a substantially vertical position to permit the arms to be removed from their respective slots; and further comprising a second substantially horizontal beam substantially parallel to and spaced apart from said first horizontal beam, said second substantially horizontal beam also having a top surface which defines a plurality of slots; and a second connector clip mounted on said second substantially horizontal beam, said second connector clip also including left and right substantially L-shaped arms extending downwardly and rearwardly from the main body of said second clip, said arms including free end portions extending rearwardly from said main body; said arms of said second connector clip extending into respective slots of the second substantially horizontal beam; wherein the respective arms of said second clip and the respective slots in said second beam are sized so that said second clip can only be installed on its respective beam by rotating the clip from a substantially vertical position to a substantially horizontal position, and said second clip can only be removed from its respective beam by rotating the clip from a substantially horizontal position to a substantially vertical position; and an elongated member extending substantially horizontally between and resting on top of said first and second connector clips and fixed to said first and second connector clips; wherein, as long as said elongated member is fixed to said first and second connector clips, said clips are prevented from rotating relative to their respective beams. 3. A rack, comprising: a plurality of substantially vertical columns; a plurality of substantially horizontal beams supported on said substantially vertical columns, with at least a first substantially horizontal beam having a top surface which defines a plurality of slots; and at least one first connector clip, including a main body defining a top surface and a bottom surface and including left and right substantially L-shaped arms extending downwardly and rearwardly from said main body, wherein each of the L-shaped arms includes a free end portion extending rearwardly from said main body; said first connector clip being mounted on said first substantially horizontal beam, with the left and right arms of said first connector clip extending through the corresponding slots in said first substantially horizontal beam; wherein the respective arms and slots are sized so that said first connector clip can only be installed on its respective first beam by orienting the first clip substantially vertically to permit the free end portions of the arms to enter the slots and then rotating the first clip to a substantially horizontal position; and said first clip can only be removed from its respective beam by rotating the first clip to a substantially vertical position to permit the arms to be removed from their respective slots