CN105648274B - A kind of excellent monel of low temperature impact properties and its production technology - Google Patents
A kind of excellent monel of low temperature impact properties and its production technology Download PDFInfo
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- CN105648274B CN105648274B CN201610161875.9A CN201610161875A CN105648274B CN 105648274 B CN105648274 B CN 105648274B CN 201610161875 A CN201610161875 A CN 201610161875A CN 105648274 B CN105648274 B CN 105648274B
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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
- C22C1/023—Alloys based on nickel
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/10—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
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Abstract
The present invention relates to technical field of alloy material, specifically discloses a kind of excellent monel of low temperature impact properties, while also disclose its production technology.The composition by weight percent of the monel is：Cu：28.5%~32.5%；Al：2.74%~3.2%；Ti：0.47%~0.6%；Mn：1.18%~1.28%；Si：0.33%~0.38%；C：0.057%~0.085%；S≤0.002%；Surplus is Ni.The low-temperature impact work of monel provided by the invention is significantly larger than existing nickel-copper alloy material, and the low temperature service condition in practical service environment shows that the low-temperature impact resistance ability of monel of the present invention is very strong；Its comprehensive mechanical property is very excellent simultaneously, remote excellent in existing nickel-copper alloy material.LNG low temperature pump shafts made of similar monel are replaced with the monel, the service life of cryogenic pump greatly improves.
Description
Technical field
The present invention relates to technical field of alloy material, more particularly to the monel that a kind of low temperature impact properties are excellent, together
When further relate to its production technology.
Background technology
Natural gas is increasingly favored as clean energy resource, and LNG (liquefied natural gas) is all classified as first choice by many countries
Fuel.Ratio of the natural gas in energy supply increases sharply, and liquefied natural gas just with every year about 12% rapid growth, turns into
The whole world increases one of most swift and violent energy industry.In recent years global LNG production and trade it is increasingly active, LNG turn into it is rare
Resource is cleaned, as the new focus of world's oil and gas industry.To ensure energy supply diversification and improving energy consumption structure,
Some energy-consuming big countries increasingly pay attention to LNG introduction, and LNG receptions are all being built in Japan, South Korea, the U.S., Europe on a large scale
Stand.Its new profit growth point is also turned to LNG business by international major oil companies one after another, and LNG will be as next after oil
The popular energy commodity of whole world contention.
At present, substantial amounts of LNG transport relies primarily on the means of transportation of steamer, is needed after LNG cargo ships reach harbour
It is conveyed into pipeline or holding vessel ashore from cabin with special cryogenic pump.So, become the effect of cryogenic pump for
The ring of key one in LNG transportations.Generally, largely all there is brittle-ductile transition temperature, this temperature one in metal material
As below 0 degree Celsius, the mechanical property of the lower material of temperature is poorer.Therefore, come for the shaft material of LNG special low temperature pumps
Say, its ultralow temperature mechanical property determines the performance of cryogenic pump.The ultralow temperature mechanical property of low temperature pump shaft material is more excellent,
The performance of cryogenic pump is better.
The shaft material of cryogenic pump typically uses monel at present, and monel is single σ phases, the alloy do not have plasticity-
Brittle transition temperature, it is especially suitable for using at low temperature.However, the intensity of ambrose alloy bianry alloy is not high, it is difficult to meets pump shaft pair
The requirement of mechanical property.Therefore, to meet the mechanical property requirements of LNG low temperature pump shaft under cryogenic, in monel also
Need to add the mechanical property that the member such as manganese, carbon, silicon, iron, aluminium and titanium usually improves ambrose alloy bianry alloy.But existing cryogenic pump
Shaft material monel, because its element composition is not reasonable, plus the defects of production technology, existing cryogenic pump axial wood
Material is bad with monel low temperature impact properties, and toughness can not meet to require.
The content of the invention
It is an object of the present invention to provide the monel that a kind of low temperature impact properties are excellent, the monel is removed with very high
Outside intensity and toughness, its low-temperature impact work can reach more than 150J (V-type mouth, -196 DEG C), and there is very excellent low temperature to rush
Hit performance.
The object of the invention also resides in the production technology for providing a kind of excellent monel of low temperature impact properties.
The present invention solves technical problem and adopted the following technical scheme that：A kind of excellent monel of low temperature impact properties, institute
The composition by weight percent for stating monel is：
Cu：28.5%~32.5%；
Al：2.74%~3.2%；
Ti：0.47%~0.6%；
Mn：1.18%~1.28%；
Si：0.33%~0.38%；
C：0.057%~0.085%；
S≤0.002%；
Surplus is Ni.
Optionally, the composition by weight percent of the monel is：Cu：30.5%, Al：2.88%, Ti：0.47%,
Mn：1.18%, Si：0.35%, C：0.06%, S≤0.002%；Surplus is Ni.
Optionally, the composition by weight percent of the monel is：Cu：32.5%, Al：3.2%, Ti：0.6%, Mn：
1.28%, Si：0.38%, C：0.085%, S≤0.002%；Surplus is Ni.
Optionally, the composition by weight percent of the monel is：Cu：28.5%, Al：2.74%, Ti：0.52%,
Mn：1.18%, Si：0.33%, C：0.057%, S≤0.002%；Surplus is Ni.
A kind of production technology of the excellent monel of low temperature impact properties, the production technology comprise the following steps：
Raw material melting at 1500~1650 DEG C in vacuum melting furnace produces liquation, and a small amount of magnesium copper is added in fusion process
As degasifier, the percentage by weight composition of the raw material is：29%~33% Cu, 2.9%~3.5% electrolytic aluminium,
0.5%~0.7% pure titanium, 1.2%~1.3% electrolytic manganese, 0.35%~0.4% pure silicon, 0.07%~0.1% carbon
Powder, the electrolytic nickel of surplus；
Liquation carries out refining 40~45 minutes at 1580~1600 DEG C；
Refine and stand 30 minutes at 1530~1550 DEG C after terminating；
After being cooled to 1500~1520 DEG C, pour into pig mold, be cooled to room temperature, obtain ingot casting；
The ingot casting is carried out to cut rising head and scale removal processing；
Then ingot casting is heated at 1150 DEG C, carries out forging and stamping processing afterwards, swaging deformation amount is more than 60%；
Forging and stamping are heat-treated after terminating to gained forging, and monel finished product is made.
Preferably, the Technology for Heating Processing is：The forging is heated to 400 DEG C in heat-treatment furnace from room temperature, heating consumption
When 1~2 hour, be incubated 1~2 hour at 400 DEG C, then the forging is heated to 580~600 DEG C from 400 DEG C, heating time-consuming 1
~2 hours, 16~20 hours are incubated at 580~600 DEG C, forging is down to 400 DEG C from 580~600 DEG C afterwards, cooling time-consuming 15~
18 hours, subsequently heat-treated furnace power-off, furnace cooling, monel finished product is made.
The composition by weight percent of the monel finished product is：
Cu：28.5%~32.5%；
Al：2.74%~3.2%；
Ti：0.47%~0.6%；
Mn：1.18%~1.28%；
Si：0.33%~0.38%；
C：0.057%~0.085%；
S≤0.002%；
Surplus is Ni.
The present invention has the advantages that：Due to the content science conjunction of aluminium, titanium, carbon in the monel of the present invention
Reason, the addition of aluminium and titanium can form (Ti, Al) between nickel3Ni hardening constituent, separated out in grain boundaries, so as to significantly improve nickel
The alloy strength of copper alloy, carbon form Carbide Precipitation in intergranular, enhance alloy strength；The heat of solid solution added-time effect is taken simultaneously
Processing mode so that in monel (Ti, Al)3The quantity of Ni hardening constituents more disperse, structure be more tiny and distribution more
Add the comprehensive mechanical property for uniformly, finally significantly increasing monel.Monel prepared by the present invention has very excellent
Different low temperature impact properties, its V-type mouth ballistic work can reach 170J or so at -196 DEG C, and its room temperature tensile strength can reach
To 1100MP, yield strength can reach 870MPa, and elongation percentage can reach 22%, and hardness reaches 33HRC, reduction of area 57%,
Dark blue group of its mechanical performance index Yuan Chao U.S. is to the mechanical property requirements reached required by LNG pump shaft material and low-temperature impact
Performance requirement.Compared with existing similar monel, its low-temperature impact work is higher by about 2~3 times than existing monel, low temperature
Impact property significantly improves.In addition, the toughness of the monel is also higher by much than existing monel.
Compared with existing similar monel, monel of the invention has property effect following prominent：Gained ambrose alloy
The low-temperature impact work of alloy is significantly larger than existing nickel-copper alloy material, and the low temperature service condition in practical service environment shows, this
The low-temperature impact resistance ability of invention monel is very strong；Its comprehensive mechanical property is very excellent simultaneously, remote excellent in existing
Nickel-copper alloy material.Cavitation corrosion in actual environment test result indicates that, the low-temperature impact resistance ability of monel of the present invention is stronger,
LNG low temperature pump shafts made of similar monel are replaced with the monel, the service life of cryogenic pump greatly improves.Show this
Monel can be promoted as a kind of LNG low temperature pump shaft with alloy.
Brief description of the drawings
Fig. 1 is the fractograph of monel finished product tissue made from the embodiment of the present invention 1；
Fig. 2 is the fractograph of monel finished product tissue made from the embodiment of the present invention 2；
Fig. 3 is the fractograph of monel finished product tissue made from the embodiment of the present invention 3.
Embodiment
Technical scheme is further elaborated with reference to embodiment.
Embodiment 1
A kind of monel is present embodiments provided, its composition by weight percent is：Cu：30.5%, Al：2.88%, Ti：
0.47%, Mn：1.18%, Si：0.35%, C：0.06%, S：0.002%；Surplus is Ni.
The production technology of the monel, comprises the following steps：
Raw material is taken, the percentage by weight composition of raw material is：31% Cu, 3% electrolytic aluminium, 0.5% pure titanium, 1.2%
Electrolytic manganese, 0.37% pure silicon, 0.07% carbon dust, the electrolytic nickel of surplus；Raw material is in a vacuum in 1550 in frequency smelting furnace
Melting produces liquation at~1650 DEG C, and a small amount of magnesium copper is added as degasifier in fusion process；
Liquation carries out refining 45 minutes at 1600 DEG C；
Refine and stand 30 minutes at 1550 DEG C after terminating；
After being cooled to 1520 DEG C, pour into pig mold, be cooled to room temperature, obtain ingot casting；
Ingot casting is carried out to cut rising head and scale removal processing；
Then ingot casting is heated at 1150 DEG C, carries out forging and stamping processing afterwards, swaging deformation amount is more than 60%；
Forging and stamping carry out the heat treatment of following system to gained forging in heat-treatment furnace after terminating：Gained forging is being heat-treated
400 DEG C are heated to from room temperature in stove, heating is time-consuming 2 hours, is incubated 2 hours at 400 DEG C, then forging is heated to 600 from 400 DEG C
DEG C, heating is time-consuming 2 hours, and 20 hours are incubated at 600 DEG C, and forging is down to 400 DEG C from 600 DEG C afterwards, and cooling is time-consuming 18 hours, so
Heat-treatment furnace powers off afterwards, furnace cooling, and monel finished product is made.The tissue fractograph of the monel finished product is shown in Fig. 1 institutes
Show.
Embodiment 2
A kind of monel is present embodiments provided, its composition by weight percent is：Cu：32.5%, Al：3.2%, Ti：
0.6%, Mn：1.28%, Si：0.38%, C：0.085%, S：0.001%；Surplus is Ni.
The production technology of the monel, comprises the following steps：
Raw material is taken, the percentage by weight composition of raw material is：33% Cu, 3.5% electrolytic aluminium, 0.7% pure titanium,
1.3% electrolytic manganese, 0.4% pure silicon, 0.1% carbon dust, the electrolytic nickel of surplus；Raw material in a vacuum in frequency smelting furnace in
Melting produces liquation at 1580~1650 DEG C, and a small amount of magnesium copper is added as degasifier in fusion process；
Liquation carries out refining 45 minutes at 1600 DEG C；
Refine and stand 30 minutes at 1550 DEG C after terminating；
After being cooled to 1520 DEG C, pour into pig mold, be cooled to room temperature, obtain ingot casting；
Ingot casting is carried out to cut rising head and scale removal processing；
Then ingot casting is heated at 1150 DEG C, carries out forging and stamping processing afterwards, swaging deformation amount is more than 60%；
Forging and stamping carry out the heat treatment of following system to gained forging in heat-treatment furnace after terminating：Gained forging is being heat-treated
400 DEG C are heated to from room temperature in stove, heating is time-consuming 2 hours, is incubated 1 hour at 400 DEG C, then forging is heated to 580 from 400 DEG C
DEG C, heating is time-consuming 1 hour, and 16 hours are incubated at 580 DEG C, and forging is down to 400 DEG C from 580 DEG C afterwards, and cooling is time-consuming 15 hours, so
Heat-treatment furnace powers off afterwards, furnace cooling, and monel finished product is made.The tissue fractograph of the monel finished product is shown in Fig. 2 institutes
Show.
Embodiment 3
A kind of monel is present embodiments provided, its composition by weight percent is：Cu：28.5%, Al：2.74%, Ti：
0.52%, Mn：1.18%, Si：0.33%, C：0.057%, S：0.002%；Surplus is Ni.
The production technology of the monel, comprises the following steps：
Raw material is taken, the percentage by weight composition of raw material is：29% Cu, 2.9% electrolytic aluminium, 0.6% pure titanium,
1.2% electrolytic manganese, 0.35% pure silicon, 0.07% carbon dust, the electrolytic nickel of surplus；Raw material in a vacuum in frequency smelting furnace in
Melting produces liquation at 1500~1600 DEG C, and a small amount of magnesium copper is added as degasifier in fusion process；
Liquation carries out refining 40 minutes at 1580 DEG C；
Refine and stand 30 minutes at 1530 DEG C after terminating；
After being cooled to 1500 DEG C, pour into pig mold, be cooled to room temperature, obtain ingot casting；
Ingot casting is carried out to cut rising head and scale removal processing；
Then ingot casting is heated at 1150 DEG C, carries out forging and stamping processing afterwards, swaging deformation amount is more than 60%；
Forging and stamping carry out the heat treatment of following system to gained forging in heat-treatment furnace after terminating：Gained forging is being heat-treated
400 DEG C are heated to from room temperature in stove, heating is time-consuming 1 hour, is incubated 1 hour at 400 DEG C, then forging is heated to 580 from 400 DEG C
DEG C, heating is time-consuming 1 hour, and 18 hours are incubated at 580 DEG C, and forging is down to 400 DEG C from 580 DEG C afterwards, and cooling is time-consuming 15 hours, so
Heat-treatment furnace powers off afterwards, furnace cooling, and monel finished product is made.The tissue fractograph of the monel finished product is shown in Fig. 3 institutes
Show.
The sequencing of above example only for ease of describing, does not represent the quality of embodiment.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (4)
- A kind of 1. excellent monel of low temperature impact properties, it is characterised in that the composition by weight percent of the monel For：Cu：28.5%~32.5%；Al：2.74%~3.2%；Ti：0.47%~0.6%；Mn：1.18%~1.28%；Si：0.33%~0.38%；C：0.057%~0.085%；S≤0.002%；Surplus is Ni；It is made by the production technology comprised the following steps：Raw material melting at 1500~1650 DEG C in vacuum melting furnace produces liquation, and degasifier is added in fusion process, described The percentage by weight of raw material forms：29%~33% Cu, 2.9%~3.5% electrolytic aluminium, 0.5%~0.7% it is pure Titanium, 1.2%~1.3% electrolytic manganese, 0.35%~0.4% pure silicon, 0.07%~0.1% carbon dust, the electrolytic nickel of surplus；Liquation carries out refining 40~45 minutes at 1580~1600 DEG C；Refine and stand 30 minutes at 1530~1550 DEG C after terminating；After being cooled to 1500~1520 DEG C, pour into pig mold, be cooled to room temperature, obtain ingot casting；The ingot casting is carried out to cut rising head and scale removal processing；Then ingot casting is heated at 1150 DEG C, carries out forging and stamping processing afterwards, swaging deformation amount is more than 60%；Forging and stamping are heat-treated after terminating to gained forging, and monel finished product is made；Technology for Heating Processing is：The forging is heated to 400 DEG C in heat-treatment furnace from room temperature, and heating is time-consuming 1~2 hour, 400 DEG C insulation 1~2 hour, then the forging be heated to 580~600 DEG C from 400 DEG C, heating is time-consuming 1~2 hour, 580~ 600 DEG C are incubated 16~20 hours, and forging is down to 400 DEG C from 580~600 DEG C afterwards, and cooling is time-consuming 15~18 hours, then at heat Furnace power-off is managed, furnace cooling, monel finished product is made.
- 2. monel according to claim 1, it is characterised in that the composition by weight percent of the monel is： Cu：30.5%, Al：2.88%, Ti：0.47%, Mn：1.18%, Si：0.35%, C：0.06%, S≤0.002%；Surplus is Ni。
- 3. monel according to claim 1, it is characterised in that the composition by weight percent of the monel is： Cu：32.5%, Al：3.2%, Ti：0.6%, Mn：1.28%, Si：0.38%, C：0.085%, S≤0.002%；Surplus is Ni。
- 4. monel according to claim 1, it is characterised in that the composition by weight percent of the monel is： Cu：28.5%, Al：2.74%, Ti：0.52%, Mn：1.18%, Si：0.33%, C：0.057%, S≤0.002%；Surplus is Ni。
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| CN110306080A (en) * | 2019-08-06 | 2019-10-08 | 北方工业大学 | A kind of new type corrosion resistant nickel-base alloy and its production technology |
| CN111961919A (en) * | 2020-08-04 | 2020-11-20 | 钢铁研究总院 | Nickel-copper alloy bar for ship and processing method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1405343A (en) * | 2001-08-09 | 2003-03-26 | 上海金韦仑特种材料研究所 | High-strength nickel-copper alloy and production method thereof |
| CN103773996A (en) * | 2012-10-23 | 2014-05-07 | 丹阳市利普机械配件有限公司 | Manufacturing process for nickel-copper alloy used for cable |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1405343A (en) * | 2001-08-09 | 2003-03-26 | 上海金韦仑特种材料研究所 | High-strength nickel-copper alloy and production method thereof |
| CN103773996A (en) * | 2012-10-23 | 2014-05-07 | 丹阳市利普机械配件有限公司 | Manufacturing process for nickel-copper alloy used for cable |
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