US10858724B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10858724-B2 |
| Application number | US-201816096799-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 15, 2018 |
| Priority date | Apr 13, 2017 |
| Publication date | Dec 8, 2020 |
| Grant date | Dec 8, 2020 |
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Official abstract text for this publication.
A method for homogenizing the compositions and mechanical performances of nickel-based material brazed joints, includes three homogenized manufacturing steps: Step I, assembling the welding sample, placing it into the vacuum furnace, and then heating up to 830˜860° C. and holding the temperature; then heating up again to 1050˜1100° C. and holding the temperature; allowing for slow self-cooling in vacuum till it reaches 620˜640° C.; then filling the furnace with nitrogen and starting the vacuum furnace fan at the same time, so that the sample is cooled down to 40˜60° C.; Step II, raising the temperature up to 1140˜1160° C. and holding, then cooling it down to the room temperature through water-quenching; Step III, raising the temperature of the welding sample up to 680˜750° C. again, and cooling it down to the room temperature through air cooling.
Opening claim text (preview).
What is claimed is: 1. A method for homogenizing the compositions and mechanical performances of a nickel-based material brazed joint, the method comprising steps below: Step I: assembling a welding sample and placing the welding sample into a vacuum furnace; first heating up to 830˜860° C. at a rate of 13˜16° C./min., and holding the temperature for 30˜40 min.; then heating up to 1050˜1100° C. at a rate of 7˜10° C./min. and holding the temperature for 25˜40 min.; allowing for self-cooling in vacuum till the temperature of the sample reaches 620˜640° C.; then filling the vacuum furnace with nitrogen and starting a vacuum furnace fan at the same time, so that the sample is cooled down to 40˜60° C.; Step II: raising the temperature of the processed welding sample of Step I up to 1140˜1160° C. and holding the temperature for 11˜12 h, and then cooling down to a room temperature through water-quenching; Step III: raising the temperature of the processed welding sample of Step II up to 680˜750° C., holding the temperature for 17˜19 h, and cooling down to the room temperature through air cooling. 2. The method for homogenizing the composition and mechanical performance of a nickel-based material brazed joint as described in claim 1 , wherein the welding sample is made of a nickel-based super alloy material. 3. The method for homogenizing the composition and mechanical performance of a nickel-based material brazed joint as described in claim 1 , wherein in Step I, the vacuum furnace is vacuumed to 1×10 −3 Pa.
in inert or controlled atmosphere or vacuum (adjusting the composition of the atmosphere C21D1/76) · CPC title
Soldering within a furnace (B23K1/012 takes precedence) · CPC title
with Cr as the next major constituent · CPC title
without Mo and W · CPC title
of nickel or cobalt or alloys based thereon · CPC title
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