CN107739891B - A kind of nickel molybdenum intermediate alloy is preparing the application in ErNiCrMo-3 alloy - Google Patents
A kind of nickel molybdenum intermediate alloy is preparing the application in ErNiCrMo-3 alloy Download PDFInfo
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- CN107739891B CN107739891B CN201710981057.8A CN201710981057A CN107739891B CN 107739891 B CN107739891 B CN 107739891B CN 201710981057 A CN201710981057 A CN 201710981057A CN 107739891 B CN107739891 B CN 107739891B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
- C22C27/04—Alloys based on tungsten or molybdenum
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
Abstract
The invention discloses a kind of preparation method of nickel molybdenum intermediate alloy, comprising steps of a, taking nickel by weight: 30% -60%, molybdenum: 40% -70%；B, it is packed into charcoal after part of nickel being first packed into crucible, then remaining nickel is packed into, molybdenum, a small amount of nickel magnesium alloy and charcoal are packed into alloy storehouse；C, crucible, which is vacuumized, is warming up to 30kw by 5kw/10min later by the 25kw that is warming up to of 2~5kw/5min of 25kw or less less than or equal to 5pa heating melting；Refine 10min, stand 5min, air pressure is to 0.07Mpa in crucible, molybdenum in alloy storehouse is added in crucible, power is risen into 20kw, refining 4min stands 1min after material in crucible all melts to liquid level clarification, valve addition nickel magnesium alloy is closed in power-off, it heats up after nickel magnesium alloy is added, is properly poured into mold immediately to the clear temperature of liquid levelization, cooling 20min comes out of the stove.
Description
Technical field
The invention belongs to metal material smelting processing technical fields, and in particular to a kind of processing technology of nickel molybdenum intermediate alloy,
Molybdenum content 40%-70% remaining be nickel.
Background technique
Nickel-base alloy is a kind of important corrosion-resistant metallic material.Corrosion-resistant nickel-base alloy is widely used in chemical, hair
Motor moisture-resistant corroded components (such as feed water heater and jet chimney), pollution control equipment (such as flue gas desulfunzation equipment), this
A little corrosion-resistant nickel-base alloy dosages account for about the 30% of nickel-base alloy total flow, remaining ship and ocean engineering are with corrosion-resistant Ni-based
Alloy accounts for 10% or so.Nickel-base alloy is mainly used with deformable material, also there is part casting alloy, such as chemical industry, power industry
Certain components, such as turbine engine blade.Addition element is done with nickel molybdenum intermediate alloy, not only nickel-base alloy tissue can be made equal
Even, utmostly reducing segregation influences, and guarantees the service performance of material, while can also improve efficiency, reduction expense.China has
The maximum nickel-base alloy demand gap in the whole world, the fast development of China's economic in addition, some column heavy constructions of implementation are such as big to fly
Machine plan, Chang'e's project, nuclear power developing plan, ocean engineering etc., these all provide for Chinese nickel-base alloy industry development huge
Big demand.It is directly added into pure nickel when processing nickel-base alloy in traditional handicraft and molybdenum prepares alloy, this production technology production
Alloy is easy to produce segregation phenomena.
Summary of the invention
In order to solve deficiency in the prior art, the nickel molybdenum intermediate alloy production technology in nickel-base alloy production is provided, originally
Invention the technical solution adopted is that:
A kind of preparation method of nickel molybdenum intermediate alloy comprising following steps:
A, it stocks up: taking nickel by weight: 30% -60%, remaining is molybdenum；
B, part of nickel: being first packed into after crucible bottom and be packed into charcoal by shove charge, then remaining nickel is filled in crucible, and molybdenum is packed into and is closed
Jin Cang is also loaded into a small amount of nickel magnesium alloy and charcoal in alloy storehouse；
C, it melting: is evacuated to air pressure in crucible and is less than or equal to start to warm up melting when 5pa, by 2~5kw/ of 25kw or less
The temperature increasing schedule heating power of 5min rises to 25kw, is raised to 30kw by the temperature increasing schedule heating power of 5kw/10min later；When
Material all melts to liquid level clarification in crucible, refines 10min, stands 5min, has a power failure, closes gas in big valve argon filling to crucible
It is pressed onto 0.07Mpa, molybdenum in alloy storehouse is added in crucible, power is risen into 20kw, is all melted to material in crucible to liquid level
4min is refined after clarification and stands 1min, and valve addition nickel magnesium alloy is closed in power-off, heats up after nickel magnesium alloy is added, warm clearly to liquid levelization
Degree is properly poured into mold immediately, and cooling 20min comes out of the stove.
Ingot casting after coming out of the stove forges the particle for being broken for 0mm -30mm with pneumatic hammer.
Particle is subjected to classification processing according to granular size, obtains the finished particle for being easy to add.
The batch used in this method is 15kg/ furnace, the specification of mold use are as follows: 100 × 280mm of Φ.
In conclusion preparing the simple process of nickel molybdenum intermediate alloy using the present invention, Yi Shixian industrial-scale production is produced
Quality is stablized, and particle size is tiny uniformly.Compared with traditional processing method, the present invention can make nickel-base alloy structure property equal
It is even, reduce following process difficulty.It smelts and adds suitable for various anti-corrosion and high performance nickel-base alloy, and can be with other elements
It is applied in combination, is expected to be applied in the various alloys other than nickel-base alloy.
Detailed description of the invention
Fig. 1 is the metallographic microscope that the nickel molybdenum intermediate alloy produced by the technique prepares Ф 8.0mmErNiCrMo-3 alloy；
Fig. 2 is the metallographic that the nickel molybdenum intermediate alloy produced by the technique prepares Ф 2.4mmErNiCrMo-3 alloy
Figure.
Specific embodiment
Produce nickel molybdenum intermediate alloy technique the following steps are included:
In the intermediate alloy content of nickel 30% -60% remaining be molybdenum.
Step 1, stock: nickel is taken by weight: 30% -60%, remaining is molybdenum.It is this alloy using the proportion scale
Eutectic point has and is easy to realize the broken of intermediate alloy in sharp following process；
Part of nickel: being first packed into after crucible bottom and be packed into charcoal by step 2, shove charge, then remaining nickel is filled in crucible, and molybdenum is filled
Enter alloy storehouse, a small amount of nickel magnesium alloy and charcoal are also loaded into alloy storehouse.Shove charge sequence is conducive to remove objectionable impurities
Element and deoxidation guarantee the purity of alloy；
Step 3, melting: being evacuated in crucible air pressure and be less than or equal to start to warm up melting when 5pa, by 25kw or less 2~
The temperature increasing schedule heating power of 5kw/5min rises to 25kw, is raised to 30kw by the temperature increasing schedule heating power of 5kw/10min later；
When material all melts to after liquid level clarification in crucible, refining 10min stands 5min, has a power failure, closes in big valve argon filling to crucible
Molybdenum in alloy storehouse is added in crucible to 0.07Mpa, power is risen to 20kw by air pressure, all melts to material in crucible to liquid
Refining 4min stands 1min after the clarification of face, and power-off, pass valve are added nickel magnesium alloy, heat up after nickel magnesium alloy is added, clear to liquid levelization
Temperature is properly poured into mold immediately, and cooling 20min comes out of the stove.The vacuum degree of ingot casting smelting process, heating, heat preservation, change Chilly and
The technical parameters such as argon gas protection, it is ensured that the chemical component uniformity of alloy；
Step 4, beat it is broken: the ingot casting after coming out of the stove forges the particle for being broken for 0mm -30mm with pneumatic hammer.
Step 5, classification: particle is subjected to classification processing according to granular size, obtains the finished particle for being easy to add.
It is easy to make an addition in nickel-base alloy by the produced particle of step 4 and step 5, guarantees materials microstructure performance: In
The uniformity for guaranteeing ingredient in final alloy avoids generating segregation phenomena.
The batch used in technique above is 15kg/ furnace, the specification of mold use are as follows: 100 × 280mm of Φ, selection should
Specification mold, which facilitates, subsequent beats broken processing.
The final alloy embodiment produced after adding using the nickel molybdenum intermediate alloy that the production technology is produced is given below
Parameter embodiment:
The elements such as C, H, O, N, S, P in ingot casting are analyzed after forging, analysis the result is as follows:
ErNiCrMo-3 alloy property after forging is as shown in the table:
By adding this approach of intermediate alloy, obtained this alloy welding wire forging its performance of base meets GB/T15620
Relevant criterion.
Step 5: rolling process is processed as the wire and rod of 8 × Lmm of Φ
The stick silk material that specification is Φ 8 is obtained after rolling, performance is as shown in the table:
| The trade mark | Tensile strength/MPa | Yield strength/MPa | Elongation percentage/% |
| ERNiCrMo-3 | 773 | 316 | 71 |
Step 6: Φ 2.4 × Lmm welding wire material is processed as through processes such as rolling → wire drawings.
The stick silk material of the Φ 2.4 of specification is obtained after the processes such as rolling → wire drawing, performance is as shown in the table:
It welds and tests through plate thickness 15mm, radiography detection comments piece Acc qualified.
Using drawing of the Ф 2.4mmErNiCrMo-3 alloy bar silk material manufactured in the present embodiment under the conditions of room temperature (20 DEG C)
Stretching intensity is 822MPa, yield strength 543MPa, elongation percentage 51.5%；It welds and tests through plate thickness 15mm, radiography
Detection comments piece Acc qualified.By the metallographic observation of ErNiCrMo-3 alloy blank, it is equal to can clearly be seen alloy grain size
It is even, sharp between crystal boundary；Meet China welding wire standard GB/T15620-1995 and U.S.'s welding rod and welding wire AWS
AS.11-1990 standard requirements.Thus explanation is aobvious using Ф 2.4mmErNiCrMo-3 alloy welding wire material manufactured in the present embodiment
Micro-assembly robot is uniform, good mechanical performance.
The above, approximate presently preferred embodiments of the present invention, is not intended to limit the invention in any way, it is all according to the present invention
Technology implementation any simple modification to the above embodiments, change and equivalent structural changes, still fall within skill of the present invention
In the protection scope of art scheme.
Claims (4)
1. a kind of nickel molybdenum intermediate alloy is preparing the application in ErNiCrMo-3 alloy comprising following steps:
A, it stocks up: taking nickel by weight: 30% -60%, remaining is molybdenum；
B, part of nickel: being first packed into after crucible bottom and be packed into charcoal by shove charge, then remaining nickel is filled in crucible, and molybdenum is packed into alloy
Storehouse is also loaded into a small amount of nickel magnesium alloy and charcoal in alloy storehouse；
C, melting: being evacuated in crucible air pressure and be less than or equal to start to warm up melting when 5P a, by 2~5kW of 25kW or less/
The temperature increasing schedule heating power of 5min rises to 25kW, is raised to 30kW by the temperature increasing schedule heating power of 5kW/10min later；
When material all melts to after liquid level clarification in crucible, refining 10min stands 5min, has a power failure, closes in big valve argon filling to crucible
Molybdenum in alloy storehouse is added in crucible to 0.07MP a, power is risen to 20kW by air pressure, all melts extremely to material in crucible
Refining 4min stands 1min after liquid level clarification, and power-off, pass valve are added nickel magnesium alloy, heat up after nickel magnesium alloy is added, to liquid level
Clear temperature is properly poured into mold immediately, and cooling 20min comes out of the stove.
2. a kind of nickel molybdenum intermediate alloy according to claim 1 is preparing the application in ErNiCrMo-3 alloy, feature
Be: the ingot casting after coming out of the stove forges the particle for being broken for 0mm -30mm with pneumatic hammer.
3. a kind of nickel molybdenum intermediate alloy according to claim 2 is preparing the application in ErNiCrMo-3 alloy, feature
It is: particle is subjected to classification processing according to granular size, obtains the finished particle for being easy to add.
4. a kind of nickel molybdenum intermediate alloy according to claim 1 is preparing the application in ErNiCrMo-3 alloy, feature
Be: the batch used in this method is 15kg/ furnace, the specification of mold use are as follows: 100 × 280mm of Φ.
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| EP3702483B1 (en) * | 2019-02-26 | 2022-05-11 | Heraeus Deutschland GmbH & Co. KG | Moulded body made from a molybdenum-aluminium-titanium alloy |
| CN112522541B (en) * | 2019-09-17 | 2022-03-18 | 东北大学 | Nickel-based alloy desulfurizing agent and preparation method thereof |
| CN112813307A (en) * | 2020-12-31 | 2021-05-18 | 江苏国镍新材料科技有限公司 | High-temperature-resistant nickel alloy and preparation method thereof |
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| CN1540021A (en) * | 2003-10-31 | 2004-10-27 | 江苏江南铁合金有限公司 | Nickel molybdenum alloy and preparation method |
| CN103540775A (en) * | 2013-10-10 | 2014-01-29 | 宝鸡市辰炎金属材料有限公司 | Nickel-molybdenum intermediate alloy preparation method for smelting TA10 cast ingot |
| CN103938029A (en) * | 2014-04-24 | 2014-07-23 | 武侗 | Intermediate alloy nickel-molybdenum 30 additive for titanium-molybdenum-nickel-titanium alloy ingot, as well as production method |
| CN104480331A (en) * | 2014-11-21 | 2015-04-01 | 西安邦信特种金属材料科技有限公司 | Dosing method for solving segregation of alloy elements in high temperature alloy |
| CN105483410A (en) * | 2015-12-11 | 2016-04-13 | 西北工业大学 | Melting process for reducing element segregation in nickel-base superalloy |
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- 2017-10-20 CN CN201710981057.8A patent/CN107739891B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1540021A (en) * | 2003-10-31 | 2004-10-27 | 江苏江南铁合金有限公司 | Nickel molybdenum alloy and preparation method |
| CN103540775A (en) * | 2013-10-10 | 2014-01-29 | 宝鸡市辰炎金属材料有限公司 | Nickel-molybdenum intermediate alloy preparation method for smelting TA10 cast ingot |
| CN103938029A (en) * | 2014-04-24 | 2014-07-23 | 武侗 | Intermediate alloy nickel-molybdenum 30 additive for titanium-molybdenum-nickel-titanium alloy ingot, as well as production method |
| CN104480331A (en) * | 2014-11-21 | 2015-04-01 | 西安邦信特种金属材料科技有限公司 | Dosing method for solving segregation of alloy elements in high temperature alloy |
| CN105483410A (en) * | 2015-12-11 | 2016-04-13 | 西北工业大学 | Melting process for reducing element segregation in nickel-base superalloy |
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