CN1978685A - Nickel-aluminium-chronium alloy and its preparing method - Google Patents
Nickel-aluminium-chronium alloy and its preparing method Download PDFInfo
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- CN1978685A CN1978685A CN 200510129878 CN200510129878A CN1978685A CN 1978685 A CN1978685 A CN 1978685A CN 200510129878 CN200510129878 CN 200510129878 CN 200510129878 A CN200510129878 A CN 200510129878A CN 1978685 A CN1978685 A CN 1978685A
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Abstract
The invention relates to nickel aluminum chromium alloy and preparing method. Its components are 69.2-77.9wt% nickel, 10.8-12.1wt% aluminum, and 10.0-20.0wt% chromium. The alloy has better room-roof temperature strength, hardness, mechanical property, and re-productivity. The separation degree of its tested performance data is not more than 10%.
Description
Technical field
The present invention has narrated a kind of Calite and preparation method thereof.
Background technology
Nichrome has higher room temperature hardness and intensity, superior corrosion resistance, higher resistivity, surface oxidation-resistant is good, higher intensity is at high temperature also arranged, good processing properties and weldability are arranged, the high-temperature component that can be widely used in turbine engine, the industry gas-turbine, combustion chamber and process furnace accessory and metallurgy, household electrical appliance, machinery manufacturing industry etc. do Heating element and electrical apparatus industry is made resistive material, is the high-temperature material with important application prospect.
Traditional vacuum induction melting method prepares such alloy, needs about 700 ℃ temperature at least, and required equipment complexity, energy consumption height, cost height.
Summary of the invention
The invention provides a kind of Calite and preparation method thereof.
The invention provides a kind of Calite low cost, the preparation method of less energy-consumption utilizes the synthetic melting method of high calorie chemical reaction to obtain to have the purity height, the Calite that compactness is good.
A kind of Calite is characterized in that the composition of alloy is: nickel 69.2～77.9wt%, aluminium 10.8～12.1wt%, chromium 10.0～20.0wt%.
Calite and preparation method thereof is an aluminium by mass ratio: nickel is 1: 6.53; Chromium sesquioxide: aluminium: chromium trioxide is 1: 2.14: 3.30 a ratio, takes by weighing powder raw material, mixes; In the mass ratio of aluminium nickel powder mix and chromium sesquioxide, aluminium, chromium trioxide powder mix is that 1: 0.30～0.67 ratio takes by weighing, and successively divides with 140MPa pressure to be laminated in the copper mould; The detonator of reaction is by permanganate, the magnesium powder, the mixture that sulfide is formed, permanganate wherein: aluminium powder: the mass ratio of sulfide is 1: 1.5-2.5: 1-2.0, take by weighing the quality percentage composition and account for 2～10% detonator mixture of total reaction material, be pressed into the embryo piece and be positioned on the reaction idiosome with 40MPa pressure; The copper mould that reaction idiosome and detonator piece are housed is placed reaction vessel, use rare gas element purge reaction vessel to get rid of air wherein; Stock is heated to 200 ℃, and is incubated half an hour in this temperature; Get rid of from container then from the gas of reaction mass surface desorption, feed 8～12MPa rare gas element again; Continue to be heated to 255-265 ℃, by the detonator initiation reaction; Material was cooled to room temperature with reaction vessel after reaction was finished.
Adopt above technology to obtain the Calite of purity height, microtexture densification and mechanical property excellence.The composition of alloy is a nickel 69.2～77.9, aluminium 10.8～12.1, chromium 10.0～20.0.Have higher room temperature strength and hardness with the resulting material of this method, the mechanical performance data such as the table 1 of material, the material property favorable reproducibility, the performance data plastisied dispersion of surveying is not more than 10%.
The hardness of table 1 Calite and flexural strength
| Hardness (GPa) | Flexural strength (MPa) |
| 4.10～5.27 | 1070～1152 |
Hardness is tested on the MV-1 sclerometer, and test condition is: load 200g loads time length 5s.Adopt three point bending test to measure the bending strength of material on the universal material experimental machine, specimen size is 30 * 3 * 3mm, and span is 25mm, and the pressure head speed of moving down is 0.1mm/min.
Embodiment.
Embodiment 1:
Be aluminium by mass ratio respectively: nickel is 1: 6.53, chromium sesquioxide: aluminium: chromium trioxide is 1: 2.14: 3.30 a ratio, takes by weighing a certain amount of powder raw material, does in ball mill respectively and mixes 8 hours; With aluminium nickel powder mix: chromium sesquioxide, aluminium, chromium trioxide powder mix are that 1: 0.30 ratio takes by weighing material, in copper mould, take by weighing the 5g detonator with the compaction in layers of 140MPa pressure then, are pressed into the embryo piece and are positioned on the reaction idiosome with 40MPa; The copper mould that reaction idiosome and detonator piece are housed is placed reaction vessel, use rare gas element purge reaction vessel to get rid of air wherein; Stock is heated to 200 ℃, and is incubated half an hour in this temperature; Get rid of from container then from the gas of reaction mass surface desorption, feed the 8MPa rare gas element again; Continue to be heated to about 260 ℃ detonator initiation reaction under this temperature; Material was cooled to room temperature with reaction vessel after reaction was finished, and took out from container then.The composition of alloy is a nickel 69.2, aluminium 10.8, chromium 10.0; The hardness of material is 4.10GPa, and flexural strength is 1070MPa.
Embodiment 2:
Be respectively aluminium by mass ratio: nickel is 1: 6.53; Chromium sesquioxide: aluminium: chromium trioxide is 1: 2.14: 3.30 a ratio, takes by weighing a certain amount of powder raw material respectively, does in ball mill and mixes 8 hours; With aluminium nickel powder mix: chromium sesquioxide, aluminium, chromium trioxide powder mix are that 1: 0.47 ratio takes by weighing material, in copper mould, take by weighing the 5g detonator with the compaction in layers of 140MPa pressure then, are pressed into the embryo piece and are positioned on the reaction idiosome with 40MPa pressure; The copper mould that reaction idiosome and detonator piece are housed is placed reaction vessel, use rare gas element purge reaction vessel to get rid of air wherein; Stock is heated to 200 ℃, and is incubated half an hour in this temperature; Get rid of from container then from the gas of reaction mass surface desorption, feed the 8MPa rare gas element again; Continue to be heated to about 260 ℃ detonator initiation reaction under this temperature; Material was cooled to room temperature with reaction vessel after reaction was finished, and took out from container then.The composition of alloy is a nickel 73.5, aluminium 11.5, chromium 15.0; The hardness of material is 4.80GPa, and flexural strength is 1152MPa.
Implement 3:
Be respectively aluminium by mass ratio: nickel is 1: 6.53; Chromium sesquioxide: aluminium: chromium trioxide is 1: 2.14: 3.30 a ratio, takes by weighing a certain amount of powder raw material respectively, does in ball mill and mixes 8 hours; With aluminium nickel powder mix: chromium sesquioxide, aluminium, chromium trioxide powder mix are that 1: 0.67 ratio takes by weighing material, in copper mould, take by weighing the 5g detonator with the compaction in layers of 140MPa pressure then, are pressed into the embryo piece and are positioned on the reaction idiosome with 40MPa pressure; The copper mould that reaction idiosome and detonator piece are housed is placed reaction vessel, use rare gas element purge reaction vessel to get rid of air wherein; Stock is heated to 200 ℃, and is incubated half an hour in this temperature; Get rid of from container then from the gas of reaction mass surface desorption, feed the 8MPa rare gas element again; Continue to be heated to about 260 ℃ detonator initiation reaction under this temperature; Material was cooled to room temperature with reaction vessel after reaction was finished, and took out from container then.The composition of alloy is a nickel 69.2, aluminium 10.8, chromium 20.0; The hardness of material is 5.27GPa, and flexural strength is 1039MPa.
Claims (2)
1, a kind of Calite is characterized in that the composition of alloy is: nickel 69.2～77.9wt%, aluminium 10.8～12.1wt%, chromium 10.0～20.0wt%.
2, the preparation method of alloy as claimed in claim 1, it is characterized in that this method is an aluminium by mass ratio: nickel is 1: 6.53; Chromium sesquioxide: aluminium: chromium trioxide is 1: 2.14: 3.30 a ratio, takes by weighing powder raw material, mixes; In the mass ratio of aluminium nickel powder mix and chromium sesquioxide, aluminium, chromium trioxide powder mix is that 1: 0.30～0.67 ratio takes by weighing, and successively divides with 140MPa pressure to be laminated in the copper mould; The detonator of reaction is by permanganate, the magnesium powder, the mixture that sulfide is formed, permanganate wherein: aluminium powder: the mass ratio of sulfide is 1: 1.5-2.5: 1-2.0, take by weighing the quality percentage composition and account for 2～10% detonator mixture of total reaction material, be pressed into the embryo piece and be positioned on the reaction idiosome with 40 MPa pressure; The copper mould that reaction idiosome and detonator piece are housed is placed reaction vessel, use rare gas element purge reaction vessel to get rid of air wherein; Stock is heated to 200 ℃, and is incubated half an hour in this temperature; Get rid of from container then from the gas of reaction mass surface desorption, feed 8～12MPa rare gas element again; Continue to be heated to 255-265 ℃, by the detonator initiation reaction; Material was cooled to room temperature with reaction vessel after reaction was finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510129878 CN1978685A (en) | 2005-12-09 | 2005-12-09 | Nickel-aluminium-chronium alloy and its preparing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510129878 CN1978685A (en) | 2005-12-09 | 2005-12-09 | Nickel-aluminium-chronium alloy and its preparing method |
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| Publication Number | Publication Date |
|---|---|
| CN1978685A true CN1978685A (en) | 2007-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200510129878 Pending CN1978685A (en) | 2005-12-09 | 2005-12-09 | Nickel-aluminium-chronium alloy and its preparing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104911406A (en) * | 2014-03-15 | 2015-09-16 | 紫旭盛业（昆山）金属科技有限公司 | Nickel-chromium die alloy |
| CN113025837A (en) * | 2019-12-25 | 2021-06-25 | 丹阳市海威电热合金有限公司 | Wear-resistant high-temperature-resistant nickel-chromium alloy and manufacturing method thereof |
-
2005
- 2005-12-09 CN CN 200510129878 patent/CN1978685A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104911406A (en) * | 2014-03-15 | 2015-09-16 | 紫旭盛业（昆山）金属科技有限公司 | Nickel-chromium die alloy |
| CN113025837A (en) * | 2019-12-25 | 2021-06-25 | 丹阳市海威电热合金有限公司 | Wear-resistant high-temperature-resistant nickel-chromium alloy and manufacturing method thereof |
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