CN104249225B - Nickel base superalloy welding powder, its preparation method and special equipment - Google Patents
Nickel base superalloy welding powder, its preparation method and special equipment Download PDFInfo
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- CN104249225B CN104249225B CN201410250689.3A CN201410250689A CN104249225B CN 104249225 B CN104249225 B CN 104249225B CN 201410250689 A CN201410250689 A CN 201410250689A CN 104249225 B CN104249225 B CN 104249225B
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- molten steel
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- welding powder
- base superalloy
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0222—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in soldering, brazing
- B23K35/0244—Powders, particles or spheres; Preforms made therefrom
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3033—Ni as the principal constituent
- B23K35/304—Ni as the principal constituent with Cr as the next major constituent
-
- 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
-
- 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
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/055—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 20% but less than 30%
Abstract
The invention discloses a kind of nickel base superalloy welding powder, its preparation method and special equipment.Described preparation method comprises the following steps：The raw material of nickel base superalloy welding powder is well mixed, vacuum melting is carried out, pours into alloy pig, non-vacuum melting is carried out again obtains molten steel, topple over molten steel and aerosolization is carried out to molten steel, the particle that aerosolization obtains is sieved, you can the nickel base superalloy welding powder of 80 625 mesh is made；Wherein, the temperature for toppling over the molten steel before molten steel is 1,600 1700 DEG C, and the pressure for toppling over molten steel is 8000 9000Pa；The non-vacuum melting, it is described topple over molten steel and the aerosolization liquid argon protection under carry out.The preparation method of the present invention reduces production cost, can be mass-produced on the premise of quality is ensured；The composition and performance indications of obtained nickel base superalloy welding powder meet corresponding international standard requirement.
Description
Technical field
The present invention relates to a kind of nickel base superalloy welding powder, its preparation method and special equipment.
Background technology
With developing rapidly for the industries such as petrochemical industry, ocean engineering, in high pressure-temperature and it is corrosion-resistant under the conditions of set
It is standby more and more, and oriented maximization, the trend of high parameter development, the preferred material for producing this kind equipment is stainless steel.But such as
Fruit is all higher using stainless steel making, cost.In order to reduce manufacturing cost, parts thereof is manufactured using carbon steel class, is used
A kind of welding technique is in one layer of (2-5mm) nickel base superalloy welding powder of equipment surface or inner wall overlaying (cladding), you can reaches and sets
Standby corrosion-resistant grade performance requirement.
Nickel base superalloy belongs to important resistant material, and common stainless steel and corrosion-resistant metal materials phase
Than possessing the ability for having stronger resistance to various forms of corrosion and destruction, and possess good mechanical property and machining
Performance, it is especially suitable for the harsh contemporary industry of media environment.
The popularization of the welding technique such as PTA plasma arc powder surfacings, laser melting coating, supersonic spray coating both at home and abroad at present, especially
It is domestic market, needs the substantial amounts of Ni-base Superalloy Powder of import every year.But the nickel base superalloy welding powder end of domestic production
Because working condition and technique are different, such as non-vacuum melting, atomization, there is that oxygen content is higher, Composition Control is improper, batch is small
The defects of；Such as vacuum drying oven melting, atomization, the defects of control of production process equipment is complicated be present；As plasma rotating electrode process is given birth to
Powder is produced, the defects of cost increase is many be present.Etc. present situation, the welding powder existing defects for causing to need surfacing part needs and can not
Normal work, therefore superalloy powder all relies on import for a long time.
The content of the invention
The technical problems to be solved by the invention are to overcome high temperature alloy welding powder of the prior art to rely on import for a long time
The defects of, and provide a kind of nickel base superalloy welding powder, its preparation method and special equipment.
The invention provides a kind of preparation method of nickel base superalloy welding powder；Described preparation method includes following step
Suddenly：The raw material of nickel base superalloy welding powder is well mixed, vacuum melting is carried out, pours into alloy pig, then is carried out antivacuum molten
Molten steel is refined to obtain, molten steel is toppled over and aerosolization is carried out to molten steel, the particle that aerosolization obtains is sieved, you can 80-625 is made
Purpose nickel base superalloy welding powder；Wherein, the temperature for toppling over the molten steel before molten steel is 1600-1700 DEG C, described to topple over steel
The pressure of liquid is 8000-9000Pa；The non-vacuum melting, it is described topple over molten steel and the aerosolization liquid argon protection under enter
OK.
In the present invention, the raw material of described nickel base superalloy welding powder is conventional for this area, is preferably comprised：With quality hundred
Divide the element than meter, carbon (C)：0.04%~0.08%, chromium (Cr)：20.00%~23.00%, molybdenum (Mo)：8.00%~
10.00%, niobium (Nb)：3.15%~4.15%, silicon (Si)：0.05%~0.40%, iron (Fe)：0.10%~1.00%, it is remaining
Measure as nickel (Ni).
In the present invention, described niobium is preferably added in the form of NbFe87, and remaining element is added in the form of simple substance.Its
In, described carbon, chromium, molybdenum, silicon, the purity of iron and nickel are conventional for this area.Wherein, the purity of described carbon is preferably
90.00%~99.99%；And/or the purity of described chromium is preferably 99.0%~99.9%；And/or described molybdenum
Purity is preferably 90.0%~99.9%；And/or the purity of described silicon is preferably 90.0%~99.9%；And/or
The purity of described iron is preferably 90.00%~99.99%；And/or the purity of described nickel be preferably 99.00%~
99.99%；The percentage is the mass percent for the raw material total amount for accounting for described nickel base superalloy welding powder.
Wherein, described NbFe87 refers to the alloy formed by niobium element and ferro element, wherein, the quality percentage of niobium (Nb)
Content is at least 87%.Control for the content of niobium element and ferro element in raw material, content that should be first by niobium element are defined
NbFe87 is added, then the content further according to above-mentioned ferro element needs to judge whether to need additionally to supplement iron simple substance.
In the present invention, the equipment of described vacuum melting is preferably vaccum sensitive stove.Described vaccum sensitive stove it is true
Reciprocal of duty cycle is preferably≤10Pa.The equipment of described non-vacuum melting is preferably non-vacuum induction furnace.
In the present invention, it is described topple over molten steel after, molten steel flow to atomizer, and molten steel is from starting to be poured onto arrival atomization spray
The time of mouth is no more than 10 seconds.
In the present invention, described aerosolization is in atomizer, and the molten steel of melting is crushed into globulate with gas jet
The process of powder.Wherein, the pressure of described gas jet is preferably 650-750Pa, is more preferably 700Pa；Described gas
The gaseous species of body jet are preferably nitrogen；The jet direction of described gas jet preferably with toppling over molten steel when direction
Into 55 ° -65 ° of angle, the more preferably angle for 60 °；The pressure of atomizer is preferably 900- during described aerosolization
1100Pa, it is more preferably 1000Pa.
In the present invention, described negative pressure required during molten steel of toppling over is come in fact preferably by the operator on adjustment control cabinet
It is existing.
In the present invention, the purity of described liquid argon (Ar) is conventional for this area, and preferably 99.999%~100%, institute
It is mass percent to state percentage.
In the present invention, the particle diameter of described nickel base superalloy welding powder is preferably 80-270 mesh and/or 270-625 mesh.
In the present invention, the temperature for toppling over the molten steel before molten steel is preferably 1600-1650 DEG C, is more preferably 1630
DEG C, the pressure for toppling over molten steel is preferably 8500-8700Pa, is more preferably 8600Pa.
In the present invention, described nickel base superalloy welding powder is spherical welding powder.
Present invention also offers one kind nickel base superalloy welding powder as made from above-mentioned preparation method.
It is used to preparing the special equipment of above-mentioned nickel base superalloy welding powder present invention also offers a kind of, it is described special to set
The standby vaccum sensitive stove for including being sequentially connected, a liquid argon protection equipment, a non-vacuum induction furnace, an atomizer and a screening
Machine.
In the present invention, described vaccum sensitive stove is used for the raw material of melting nickel base superalloy welding powder；Described liquid argon is protected
Shield equipment is used for for non-vacuum melting, topples over the operations such as molten steel and aerosolization and provide liquid argon environmental protection；The antivacuum sensing
Stove is used to carry out non-vacuum melting to molten steel；The atomizer is used for molten steel aerosolization, to form spherical powder；The sieve
Extension set be used for will obtained ball-type powder sieving be 80-625 mesh specification.
It on the basis of common sense in the field is met, above-mentioned each optimum condition, can be combined, it is each preferably real to produce the present invention
Example.
Agents useful for same and raw material of the present invention are commercially available.
The positive effect of the present invention is：The preparation method of the present invention reduces life on the premise of quality is ensured
Cost is produced, can be mass-produced；The composition and performance indications of obtained nickel base superalloy welding powder meet corresponding international mark
Alignment request.
Brief description of the drawings
Fig. 1 is the schematic diagram for the special equipment that nickel base superalloy welding powder is prepared in embodiment 1.
Embodiment
The present invention is further illustrated below by the mode of embodiment, but does not therefore limit the present invention to described reality
Apply among a scope.The experimental method of unreceipted actual conditions in the following example, conventionally and condition, or according to business
Product specification selects.
In following embodiments, aerosolization is that the alloy liquid stream of melting is ground into the process of spherical powder with gas jet.
Wherein, the pressure of described gas jet is 700Pa；The gaseous species of described gas jet are nitrogen；Described gas is penetrated
The jet direction of stream and direction when toppling over molten steel are into 60 ° of angle；The pressure of atomizer is during described aerosolization
1000Pa。
In following embodiments, the equipment of described vacuum melting is vaccum sensitive stove.The vacuum of described vaccum sensitive stove
Spend for≤10Pa.
In following embodiments, described topples over negative pressure required during molten steel by the operator on adjustment control cabinet come real
It is existing.
Embodiment 1
The nickel base superalloy welding powder of the present embodiment, is made up of the component of following weight percentage：Carbon (C)：0.06, chromium
(Cr)：22.00, molybdenum (Mo)：9.00, niobium (Nb)：3.80, silicon (Si)：0.40, iron (Fe)：1.00, nickel (Ni)：Surplus.
The preparation method of the nickel base superalloy welding powder, comprises the following steps：By following components：Carbon (C), chromium (Cr),
Molybdenum (Mo), niobium (Nb), silicon (Si), iron (Fe) and nickel (Ni), using vacuum melting, are poured into by above-mentioned percentage proportioning, mixing
Alloy pig, then non-vacuum melting is carried out, aerosolization while toppling over molten steel, screening, you can 80-270 mesh, 270-625 mesh is made
Spherical welding powder；Wherein, the temperature for toppling over the molten steel before molten steel is 1630 DEG C, it is described topple over molten steel pressure be
8600Pa；The non-vacuum melting, it is described topple over molten steel and the aerosolization liquid argon protection under carry out.
In said components, the quality purity of carbon (C) is 99.0%, and the quality purity of chromium (Cr) is 99.48%, molybdenum (Mo)
Quality purity is 99.6%, and the quality purity of silicon (Si) is 99.9%, and the purity of iron (Fe) is 99.8%；The quality of nickel (Ni) is pure
Spend for 99.8%, niobium (Nb) is mixed in the form of NbFe87 with C, Cr, Mo, Si, Ni, Fe.The purity of liquid argon (Ar) is
99.999%.
In the present embodiment, the special equipment of described nickel base superalloy welding powder is as shown in figure 1, described special equipment bag
Include the vaccum sensitive stove 1 being sequentially connected, a liquid argon protection equipment 2, a non-vacuum induction furnace 3, an atomizer 4 and a screening
Machine 5.
Wherein, described vaccum sensitive stove 1 is used for the raw material of melting nickel base superalloy welding powder；Described liquid argon protection is set
Standby 2 are used for for non-vacuum melting, topple over the operations such as molten steel and aerosolization and provide liquid argon environmental protection；The non-vacuum induction furnace 3
For carrying out non-vacuum melting to molten steel；The atomizer 4 is used for molten steel aerosolization, to form spherical powder；The sieve
It is 80-270 mesh that extension set 5, which is used for obtained ball-type powder sieving, the specification of 270-625 mesh.
Embodiment 2
The nickel base superalloy welding powder of the present embodiment, is made up of the component of following weight percentage：Carbon (C)：0.06, chromium
(Cr)：23.00, molybdenum (Mo)：8.00, niobium (Nb)：3.15, silicon (Si)：0.05, iron (Fe)：0.10, nickel (Ni)：Surplus.
The preparation method of the nickel base superalloy welding powder, comprises the following steps：By following components：Carbon (C), chromium (Cr),
Molybdenum (Mo), niobium (Nb), silicon (Si), iron (Fe) and nickel (Ni), using vacuum melting, are poured into by above-mentioned percentage proportioning, mixing
Alloy pig, then non-vacuum melting is carried out, aerosolization while toppling over molten steel, screening, you can 80-270 mesh, 270-625 mesh is made
Spherical welding powder；Wherein, the temperature for toppling over molten steel before molten steel is 1600 DEG C, and the pressure for toppling over molten steel is 9000Pa；
The non-vacuum melting, it is described topple over molten steel and the aerosolization liquid argon protection under carry out.
In said components, the quality purity of carbon (C) is 99.0%, and the quality purity of chromium (Cr) is 99.48%, molybdenum (Mo)
Quality purity is 99.6%, and the quality purity of silicon (Si) is 99.9%, and the purity of iron (Fe) is 99.8%；The quality of nickel (Ni) is pure
Spend for 99.8%, niobium (Nb) is mixed in the form of NbFe87 with C, Cr, Mo, Si, Ni, Fe.The purity of liquid argon (Ar) is
99.999%.
Embodiment 3
The nickel base superalloy welding powder of the present embodiment, is made up of the component of following weight percentage：Carbon (C)：0.06, chromium
(Cr)：20.00, molybdenum (Mo)：10.00, niobium (Nb)：4.15, silicon (Si)：0.40, iron (Fe)：1.00, nickel (Ni)：Surplus.
The preparation method of the nickel base superalloy welding powder, comprises the following steps：By following components：Carbon (C), chromium (Cr),
Molybdenum (Mo), niobium (Nb), silicon (Si), iron (Fe) and nickel (Ni), using vacuum melting, are poured into by above-mentioned percentage proportioning, mixing
Alloy pig, then non-vacuum melting is carried out, aerosolization while toppling over molten steel, screening, you can 80-270 mesh, 270-625 mesh is made
Spherical welding powder；Wherein, the temperature for toppling over the molten steel before molten steel is 1700 DEG C, it is described topple over molten steel pressure be
8000Pa；The non-vacuum melting, it is described topple over molten steel and the aerosolization liquid argon protection under carry out.
In said components, the quality purity of carbon (C) is 99.0%, and the quality purity of chromium (Cr) is 99.48%, molybdenum (Mo)
Quality purity is 99.6%, and the quality purity of silicon (Si) is 99.9%, and the purity of iron (Fe) is 99.8%；The quality of nickel (Ni) is pure
Spend for 99.8%, niobium (Nb) is mixed in the form of NbFe87 with C, Cr, Mo, Si, Ni, Fe.The purity of liquid argon (Ar) is 100%.
Embodiment 4
In the present embodiment, carbon (C)：0.04%, the purity of each component is：The quality purity of carbon (C) is 90.0%, chromium (Cr)
Quality purity be 90.0%, the quality purity of molybdenum (Mo) is 90.0%, and the quality purity of silicon (Si) is 90.0%, iron (Fe)
Purity is 90.00%；The quality purity of nickel (Ni) is 99.0%, and the purity of liquid argon (Ar) is 99.999%, remaining process conditions,
Step and composition of raw materials are the same as embodiment 1.
Embodiment 5
In the present embodiment, carbon (C)：0.08%, the purity of each component is：The quality purity of carbon (C) is 99.9%, chromium (Cr)
Quality purity be 99.9%, the quality purity of molybdenum (Mo) is 99.9%, and the quality purity of silicon (Si) is 99.9%, iron (Fe)
Purity is 99.99%；The quality purity of nickel (Ni) is 99.9%, and the purity of liquid argon (Ar) is 100%, remaining process conditions, step
Rapid and composition of raw materials is the same as embodiment 1.
Comparative example 1
The nickel base superalloy welding powder of this comparative example, is made up of the component of following weight percentage：Carbon (C)：0.06,
Chromium (Cr)：20.00, molybdenum (Mo)：10.00, niobium (Nb)：4.15, silicon (Si)：0.40, iron (Fe)：1.00, nickel (Ni)：Surplus.
The preparation method of the nickel base superalloy welding powder, comprises the following steps：By following components：Carbon (C), chromium (Cr),
Molybdenum (Mo), niobium (Nb), silicon (Si), iron (Fe) and nickel (Ni), using vacuum melting, are poured into by above-mentioned percentage proportioning, mixing
Alloy pig, then non-vacuum melting is carried out, aerosolization while toppling over molten steel, screening, you can 80-270 mesh, 270-625 mesh is made
Spherical welding powder；Wherein, the temperature for toppling over the molten steel before molten steel is 1400 DEG C, it is described topple over molten steel pressure be
5500Pa；The non-vacuum melting, it is described topple over molten steel and the aerosolization liquid argon protection under carry out.
In said components, the quality purity of carbon (C) is 99.0%, and the quality purity of chromium (Cr) is 99.48%, molybdenum (Mo)
Quality purity is 99.6%, and the quality purity of silicon (Si) is 99.9%, and the purity of iron (Fe) is 99.8%；The quality of nickel (Ni) is pure
Spend for 99.8%, niobium (Nb) is mixed in the form of NbFe87 with C, Cr, Mo, Si, Ni, Fe.The purity of liquid argon (Ar) is
99.999%.
It is to topple over molten steel when molten steel temperature is 1400 DEG C during this comparative example nickel base superalloy welding powder processed, wherein
2/3 molten steel is not atomized, is trapped in leting slip a remark, and the molten steel for flowing through atomizer is only remaining 1/3 molten steel.It can be seen that no
Present invention specifically defines when toppling in the range of the temperature and pressure of molten steel, preferable atomization, welding powder not balling-up can not be realized
Shape, it can not meet to require.
Comparative example 2
The nickel base superalloy welding powder of this comparative example, is made up of the component of following weight percentage：Carbon (C)：0.06,
Chromium (Cr)：20.00, molybdenum (Mo)：10.00, niobium (Nb)：4.15, silicon (Si)：0.40, iron (Fe)：1.00, nickel (Ni)：Surplus.
The preparation method of the nickel base superalloy welding powder, comprises the following steps：By following components：Carbon (C), chromium (Cr),
Molybdenum (Mo), niobium (Nb), silicon (Si), iron (Fe) and nickel (Ni), using vacuum melting, are poured into by above-mentioned percentage proportioning, mixing
Alloy pig, then non-vacuum melting is carried out, aerosolization while toppling over molten steel, screening, you can 80-270 mesh, 270-625 mesh is made
Spherical welding powder；Wherein, the temperature for toppling over the molten steel before molten steel is 1630 DEG C, it is described topple over molten steel pressure be
8600Pa；The non-vacuum melting, it is described topple over molten steel not liquid argon protection under carry out.
In said components, the quality purity of carbon (C) is 99.0%, and the quality purity of chromium (Cr) is 99.48%, molybdenum (Mo)
Quality purity is 99.6%, and the quality purity of silicon (Si) is 99.9%, and the purity of iron (Fe) is 99.8%；The quality of nickel (Ni) is pure
Spend for 99.8%, niobium (Nb) is mixed in the form of NbFe70 with C, Cr, Mo, Si, Ni, Fe.
Nickel base superalloy welding powder oxygen content made from this comparative example is 0.057%, and carbon content 0.29% can not
Meet to require.
Comparative example 3
The nickel base superalloy welding powder of this comparative example, is made up of the component of following weight percentage：Carbon (C)：0.06,
Chromium (Cr)：20.00, molybdenum (Mo)：10.00, niobium (Nb)：4.15, silicon (Si)：0.40, iron (Fe)：1.00, nickel (Ni)：Surplus.
The preparation method of the nickel base superalloy welding powder, comprises the following steps：By following components：Carbon (C), chromium (Cr),
Molybdenum (Mo), niobium (Nb), silicon (Si), iron (Fe) and nickel (Ni) are carried out non-vacuum melting, toppled over by above-mentioned percentage proportioning, mixing
Aerosolization while molten steel, screening, you can 80-270 mesh, the spherical welding powder of 270-625 purposes is made；Wherein, it is described to topple over molten steel
The temperature of preceding molten steel is 1630 DEG C, and the pressure toppled over before molten steel is 8600Pa；The non-vacuum melting, described topple over steel
Liquid and the aerosolization are carried out under liquid argon protection.
In said components, the quality purity of carbon (C) is 99.0%, and the quality purity of chromium (Cr) is 99.48%, molybdenum (Mo)
Quality purity is 99.6%, and the quality purity of silicon (Si) is 99.9%, and the purity of iron (Fe) is 99.8%；The quality of nickel (Ni) is pure
Spend for 99.8%, niobium (Nb) is mixed in the form of NbFe87 with C, Cr, Mo, Si, Ni, Fe.The purity of liquid argon (Ar) is
99.999%.
The oxygen content of nickel base superalloy welding powder made from this comparative example is 0.10%, carbon content 0.032%, iron
Content is 4.24%, and oxygen content and iron content are higher, can not meet to require.
Effect example 1
This effect example analyzes the technical indicator of nickel base superalloy welding powder produced by the present invention and its like product,
It is shown in Table 1.Wherein, international standard (standard code：AWS A5.14) carbon content of such product is specified below：C (%)：
Max=0.10%.
The technical indicator testing result of nickel base superalloy welding powder made from the embodiment 1 of table 1
Note：Above-mentioned test data detects by inspection center of Shanghai material institute
In addition, nickel base superalloy welding powder produced by the present invention also has the advantages of good corrosion resistance.International standard AWS
The maximum that the percentage composition of iron (Fe) is required in A5.14 is 5.00%, and the present invention is by strictly controlling iron in raw material proportioning
(Fe) percentage composition is not more than 1.00%, and cooperation vacuum melting technique is used in combination with non-vacuum melting technique, can prevent
Nickel base superalloy welding powder makes in the composition of layer in use because welding parameter setting is improper made of raw material
Iron Fe percentage composition increase, even greater than 5.00%.
Claims (9)
- A kind of 1. preparation method of nickel base superalloy welding powder；Described preparation method comprises the following steps：Nickel-base high-temperature is closed The raw material of gold solder powder is well mixed, and is carried out vacuum melting, is poured into alloy pig, then is carried out non-vacuum melting and obtained molten steel, topples over steel Liquid simultaneously carries out aerosolization to molten steel, the particle that aerosolization obtains is sieved, you can the nickel-base high-temperature that 80-625 mesh is made closes Gold solder powder；Wherein, the temperature for toppling over the molten steel before molten steel is 1600-1700 DEG C, and the pressure for toppling over molten steel is 8000- 9000Pa；The non-vacuum melting, it is described topple over molten steel and the aerosolization liquid argon protection under carry out；Described nickel-base high-temperature The raw material of alloy welding powder includes：By percentage to the quality, carbon：0.04%~0.08%, chromium：20.00%~23.00%, molybdenum： 8.00%~10.00%, niobium：3.15%~4.15%, silicon：0.05%~0.40%, iron：0.10%~1.00%, surplus is Nickel.
- 2. preparation method as claimed in claim 1, it is characterised in that it is described topple over molten steel after, molten steel flow to atomizer, Molten steel is from starting to be poured onto the time for reaching atomizer no more than 10 seconds.
- 3. preparation method as claimed in claim 1, it is characterised in that the equipment of described vacuum melting is vaccum sensitive stove； The equipment of described non-vacuum melting is non-vacuum induction furnace.
- 4. preparation method as claimed in claim 3, it is characterised in that the vacuum of described vaccum sensitive stove is≤10Pa.
- 5. preparation method as claimed in claim 1, it is characterised in that described aerosolization is in atomizer, uses gas The molten steel of melting is ground into the process of spherical powder by jet；Wherein, the pressure of described gas jet is 650-750Pa；Institute The gaseous species for the gas jet stated are nitrogen；The jet direction of described gas jet and direction when toppling over molten steel into 55 °- 65 ° of angle；The pressure of atomizer is 900-1100Pa during described aerosolization.
- 6. preparation method as claimed in claim 1, it is characterised in that the particle diameter of described nickel base superalloy welding powder is 80- 270 mesh and/or 270-625 mesh.
- 7. preparation method as claimed in claim 1, it is characterised in that the temperature for toppling over the molten steel before molten steel is 1600- 1650℃；The pressure for toppling over molten steel is 8500-8700Pa.
- A kind of 8. nickel base superalloy welding powder made from preparation method as described in claim any one of 1-7.
- 9. a kind of special equipment for being used to prepare the nickel base superalloy welding powder described in claim 8, it is characterised in that described Special equipment include be sequentially connected a vaccum sensitive stove, a liquid argon protection equipment, a non-vacuum induction furnace, an atomizer and One screening machine.
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| CN107309090A (en) * | 2017-06-29 | 2017-11-03 | 西安欧中材料科技有限公司 | Electrostatic separation removes the method and device of high temperature alloy spherical powder nonmetal inclusion |
| CN107760930B (en) * | 2017-12-07 | 2019-03-26 | 山西鑫盛激光技术发展有限公司 | A kind of semiconductor laser deposited nickel-base alloy powder for repairing centrifugation ball milling pipe die inner wall is last |
| CN108220639A (en) * | 2018-02-11 | 2018-06-29 | 浦江县杰浩进出口有限公司 | A kind of advanced superalloys material production technology equipment |
| CN109317864A (en) * | 2018-12-06 | 2019-02-12 | 衢州学院 | A kind of preparation method and applications technique of nickel base powder brazing material |
| CN110977245B (en) * | 2019-12-31 | 2022-03-04 | 江苏新华合金有限公司 | Process preparation method of nickel-chromium-molybdenum alloy welding wire for ball valve surfacing |
| CN112775589A (en) * | 2021-01-14 | 2021-05-11 | 有研工程技术研究院有限公司 | Preparation method of high-purity narrow-particle-size nickel-based brazing filler metal alloy powder |
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| CN103233221A (en) * | 2013-04-17 | 2013-08-07 | 武汉点金激光科技有限公司 | Concrete pump vehicle wear plate surface ceramic powder clad layer and laser cladding method thereof |
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