CN108480651A - A kind of preparation method and application of Ti-48Al-2Cr-2Nb alloy powders - Google Patents
A kind of preparation method and application of Ti-48Al-2Cr-2Nb alloy powders Download PDFInfo
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Abstract
A kind of preparation method and application of Ti 48Al 2Cr 2Nb alloy powders, belongs to increases material manufacturing technology field.The method is as follows：Alloy melting：Melting is carried out to alloy raw material；Machined electrode：Finishing processing is carried out to the alloy of melting；Powder by atomization：Alloy electrode pole is subjected to powder by atomization in spray chamber；Inert gas reclaiming clean：The inert gas used during powder by atomization is recycled；Powder collects screening：After powder cooling, through cyclone collection, sieves the reactive alloys powder of required particle size range under inert gas protection using vibrating screen and pack.It is an advantage of the invention that：The Ti 48Al 2Cr 2Nb alloy powder impurity contents of preparation are low, oxygen content≤1000ppm, can meet aerospace, military industry field to the application requirement of 3D printing titanium alloy metal-powder.Present invention uses a kind of inert gas recovering and purifying systems, effectively increase gas reclaiming rate, and recycling tolerance makes production cost reduce by 30% or more in the range of 90% ~ 5%.
Description
Technical field
The invention belongs to increases material manufacturing technology fields, are related to a kind of preparation method and application of alloy powder, more particularly to
A kind of preparation method and application of low cost high cleanliness spherical shape Ti-48Al-2Cr-2Nb alloy powders.
Background technology
Intermatallic Ti-Al compound material is because having both the toughness of metal material and the high-temperature behavior of ceramic material, and its density
Less than the 50% of nickel-base alloy, with lightweight, high specific strength, high specific stiffness, anti-corrosion, wear-resisting, high temperature resistant and excellent anti-oxidant
Property the advantages that, and become 700 DEG C ~ 1000 DEG C optimal candidate high-temperature structural materials.However, Intermatallic Ti-Al compound belongs to extremely difficult
Plastic processing material, usually within the scope of 700 DEG C of following temperature, plasticity is poor, and elongation percentage is typically only 2%~3%, can not
Plastic processing is carried out, under more than 1100 DEG C high temperature, although plasticity makes moderate progress, resistance of deformation is still very big, and flowing is answered
Power is up to 200MPa, and requires to keep rather low strain rate when deformation, thus it is non-to carry out the difficulty of plastic processing forming to it
Chang great.
Currently, preparing the extensive research that Intermatallic Ti-Al compound part has caused people using 3D printing technique, no
The near-net-shape for only realizing product is avoided to the follow-up plastic processing of Intermatallic Ti-Al compound or mechanical processing, and
Compared with casting Intermatallic Ti-Al compound, the alloy structure prepared with this method is more uniform, tiny.Ti-48Al-2Cr-2Nb
It is a kind of Intermatallic Ti-Al compound haveing excellent performance, there is good comprehensive performance, when use 3D printing technique is to Ti-
When 48Al-2Cr-2Nb alloys are processed molding, required 3D printing metal powder is different from required for prior powder metallurgy
Powder characteristics, do not require nothing more than high-purity, the low oxygen content that conventional powder must have, at the same also require powder sphericity it is high,
Size distribution optimizes, and has good mobility and apparent density.Since Ti-48Al-2Cr-2Nb is sensitive to impurity component,
Often there is the phenomenon that impurity is more, sphericity is not high in powder prepared by existing atomization method, seriously affect the 3D printing of powder
Forming property.
Invention content
That there are impurity is more for the powder prepared the purpose of the present invention is to solve existing atomization method, sphericity is not high
Problem provides the preparation side of a kind of low cost, high-purity, high sphericity, low oxygen content Ti-48Al-2Cr-2Nb base alloy powders
Method and application, the Ti-48Al-2Cr-2Nb alloying components of preparation uniformly, fine microstructures, have excellent performance, meet aerospace field
Application requirement, ensure material it is pure, impurity content is extremely low on the basis of, the sphericity higher of powder, have preferably stream
Dynamic property, can be suitable for various forms of 3D printing technique increasing material manufacturings.
To achieve the above object, the technical solution adopted by the present invention is as follows：
A kind of preparation method of Ti-48Al-2Cr-2Nb alloy powders, steps are as follows for the method：
Step 1：Alloy melting：Ti-48Al-2Cr-2Nb alloy cast ingots are prepared using water jacketed copper crucible induction melting method, are melted
It is 1700 ~ 1900 DEG C to refine temperature；
Step 2：Machined electrode：Finishing processing is carried out to the Ti-48Al-2Cr-2Nb alloy cast ingots prepared in step 1, by Ti-
48Al-2Cr-2Nb alloy cast ingots are processed into Ti-48Al-2Cr-2Nb alloy electrode poles；
Step 3：Powder by atomization：In feed compartment, the Ti-48Al-2Cr-2Nb alloy electrode poles that will be obtained in step 2 hang down
Straight fixed clamp is on hoisting mechanism；Feed compartment is closed, starts the vacuum system of powder by atomization equipment, to powder by atomization equipment
Working chamber and spray chamber forvacuum, when vacuum degree≤6.7 × 10-2When Pa, step-up ratio≤0.67Pa/h, by gas ducting to
Working chamber and spray chamber are filled with inert gas shielding, and it is 0.9 ~ 1.1atm to make working chamber and atomization room pressure；It is driven by motor,
The Ti-48Al-2Cr-2Nb alloy electrode poles slowly rotated are placed in working chamber and are atomized in indoor radio-frequency induction coil,
Electrode rotary keeps certain rotating speed, feed speed ranging from 0 ~ 100mm/min of electrode；The induced power of coil is in 70 ~ 100kW
Between, electrode melting forms liquid stream, drips naturally；Start the annular distance gas atomizing nozzle in powder by atomization equipment, air-flow at this time
Pressure limit is in 2.5 ~ 4MPa, and when Ti-48Al-2Cr-2Nb aluminium alloys flow through annular distance gas atomizing nozzle, liquid stream is by annular distance gas
Body atomizer generate air-flow uniformly, fully smash and solidify to form attritive powder particle, be cooled into powder；
Step 4：Inert gas reclaiming clean：It participates in the inert gas after atomization and passes through cyclone filter, fine filter mistake
Filter is then compressed to gas purge system through compressor, it is purified after gas through heat exchanger be down to room temperature, then pass through height
After pressing compressor compresses and pulse buffer tank to stablize, reach the atomizing pressure and gas flow rate of the requirement of atomization process condition, gas
Again atomization process is participated in；
Step 5：Powder collects screening：It is limited using the big good sieving machine in Xinxiang through cyclone collection after powder cooling
Company S49-1000 types vibrating screen sieves the reactive alloys powder of required particle size range and packs under inert gas protection.
A kind of application of the Ti-48Al-2Cr-2Nb alloy powders of above-mentioned preparation, the powder diameter are distributed 15 ~ 45 μ
M, D50（Average grain diameter）≤ 32 μm, oxygen content≤1000ppm, the power applications that sphericity is 90% ~ 95% are in laser fusion metal
Deposit increasing material manufacturing.
A kind of application of the Ti-48Al-2Cr-2Nb alloy powders of above-mentioned preparation, the powder diameter is distributed as 106 ~
205μm：3.0%~5.0%、75~106μm：40%~45%、45~75μm：40%~53%、0~45μm：3.0% ~ 6.0%, wherein grain size point
Cloth is 45 ~ 106 μm, oxygen content≤1000ppm, and the Ti-48Al-2Cr-2Nb alloy powders that sphericity is 90% ~ 95% are applied to
Electron beam melting increasing material manufacturing and laser solid forming technical field.
The advantageous effect of the present invention compared with the existing technology is：
（1）The present invention is directed to requirement of the different metal 3D printing techniques to powder diameter, is added by alloy vacuum melting, electrode
The methods of work, gas atomization, screening, air current classifying prepare the Ti-48Al-2Cr-2Nb alloys suitable for different 3D printing techniques
Powder, ingredient is accurate, particle diameter distribution is uniform, and powder particle sphericity is high, average spherical degree >=90%, and powder flowbility is good（≤
15s/50g）, the utilization rate of powder is improved, production cost is reduced.
（2）Ti-48Al-2Cr-2Nb alloy powder impurity contents prepared by the present invention are low, and oxygen content≤1000ppm passes through
Drip molding even tissue that 3D printing obtains, densification, dimensional accuracy is high, good mechanical performance, can meet aerospace, military project neck
Application requirement of the domain to 3D printing titanium alloy metal-powder.
（3）Present invention uses a kind of inert gas recovering and purifying systems, effectively increase gas reclaiming rate, recycle tolerance
In the range of 90% ~ 95%, production cost is made to reduce by 30% or more.
Description of the drawings
Fig. 1 is the powder by atomization equipment structure chart that the present invention uses, wherein 1- hoisting mechanisms, 2- feed compartments, 3-Fe-
36Ni ferrous alloy electrode poles, 4- gate valves, the working chambers 5-, 6- radio-frequency induction coils, 7- annular distance gas atomizing nozzles, 8- mists
Change room, 9- vacuum pipes, 10- gas ductings.
Specific implementation mode
Technical scheme of the present invention is further described with reference to embodiment, however, it is not limited to this, every right
Technical solution of the present invention is modified or replaced equivalently, and without departing from the spirit of the technical scheme of the invention and range, should all be contained
It covers in protection scope of the present invention.
Specific implementation mode one：What present embodiment was recorded is a kind of preparation side of Ti-48Al-2Cr-2Nb alloy powders
Method, steps are as follows for the method：
Step 1：Alloy melting：Ti-48Al-2Cr-2Nb alloy cast ingots are prepared using water jacketed copper crucible induction melting method, are melted
It is 1700 ~ 1900 DEG C to refine temperature；
Step 2：Machined electrode：Finishing processing is carried out to the Ti-48Al-2Cr-2Nb alloy cast ingots prepared in step 1, by Ti-
48Al-2Cr-2Nb alloy cast ingots are processed into Ti-48Al-2Cr-2Nb alloy electrodes pole 3；
Step 3：Powder by atomization：In feed compartment 2, the Ti-48Al-2Cr-2Nb alloy electrodes pole 3 that will be obtained in step 2,
Vertical fixed clamp is on hoisting mechanism 1；Feed compartment 2 is closed, starts the vacuum system of powder by atomization equipment, powder by atomization is set
Standby 8 forvacuum of working chamber 5 and spray chamber, when vacuum degree≤6.7 × 10-2When Pa, step-up ratio≤0.67Pa/h, pass through inflation
Pipeline 10 is filled with inert gas shielding to working chamber 5 and spray chamber 8, make in working chamber 5 and spray chamber 8 pressure be 0.9 ~
1.1atm；It is driven by motor, the Ti-48Al-2Cr-2Nb alloy electrodes pole 3 slowly rotated is placed in working chamber 5 and spray chamber
In radio-frequency induction coil 6 in 8, electrode rotary keeps certain rotating speed, feed speed ranging from 0 ~ 100mm/min of electrode；Line
For the induced power of circle between 70 ~ 100kW, electrode melting forms tiny liquid stream, drips naturally；Start powder by atomization equipment at this time
In annular distance gas atomizing nozzle 7, stream pressure range is in 2.5 ~ 4MPa, when Ti-48Al-2Cr-2Nb aluminium alloys flow through annular distance
When gas atomizing nozzle 7, liquid stream by air-flow that annular distance gas atomizing nozzle 7 generates uniformly, fully smash and solidify to be formed it is fine
Powder particle, is cooled into powder, and the powder by atomization equipment that this step uses is as shown in Figure 1；1 lower part of hoisting mechanism is
Feed compartment 2,2 lower part of feed compartment are provided with working chamber 5, and the junction between feed compartment 2 and working chamber 5 is provided with gate valve 4, lead to
Being isolated and being connected to for feed compartment 2 and working chamber 5 can be controlled by crossing the plug of gate valve 4, and radio-frequency induction coil is provided in working chamber 5
Circle 6,5 lower section of working chamber are provided with spray chamber 8, annular distance gas atomizing nozzle 7, vacuum are equipped between working chamber 5 and spray chamber 8
Pipeline 9 is connected with feed compartment 2, working chamber 5, spray chamber 8 respectively, and gas ducting 10 is connected with working chamber 5 and spray chamber 8 respectively
It is logical.
Step 4：Inert gas reclaiming clean：It participates in the inert gas after atomization and passes through cyclone filter, fine filter
Filtering is then compressed to gas purge system through compressor, it is purified after gas through heat exchanger be down to room temperature, then pass through
High pressure compressor is compressed with after pulse buffer tank stabilization, reaches the atomizing pressure and gas flow rate of the requirement of atomization process condition, gas
Weight newly participates in atomization process；
Step 5：Powder collects screening：After powder cooling, through cyclone collection, using vibrating screen in inert gas shielding
The reactive alloys powder of particle size range needed for lower screening is simultaneously packed.
Specific implementation mode two：A kind of preparation of Ti-48Al-2Cr-2Nb alloy powders described in specific implementation mode one
Method, step is a kind of, and the Ti-48Al-2Cr-2Nb alloy raw materials are made of according to weight percent following element：Al：
46%~49%、Cr：1.5%~2.5%、Nb：1.5%~2.5%、B：0%~0.5%、Y：0% ~ 0.5%, remaining is Ti.
Specific implementation mode three：A kind of preparation of Ti-48Al-2Cr-2Nb alloy powders described in specific implementation mode one
Method, in step 2, a diameter of 50 ~ 100mm of the Ti-48Al-2Cr-2Nb alloy electrode poles, length is 500 ~
700mm。
Specific implementation mode four：A kind of preparation of Ti-48Al-2Cr-2Nb alloy powders described in specific implementation mode one
Method, in step 3, the method for clamping is pneumatic pinch.
Specific implementation mode five：A kind of preparation of Ti-48Al-2Cr-2Nb alloy powders described in specific implementation mode one
Method, in step 3, the inert gas is high-purity argon gas or helium.
Specific implementation mode six：A kind of preparation of Ti-48Al-2Cr-2Nb alloy powders described in specific implementation mode one
Method, in step 3, the rotating speed of motor rotation is 40 ~ 100rpm.
Specific implementation mode seven：A kind of preparation of Ti-48Al-2Cr-2Nb alloy powders described in specific implementation mode one
Method, in step 4, the recycling tolerance of the inert gas recovering and purifying system is in the range of 90% ~ 95%.
Specific implementation mode eight：A kind of Ti-48Al- prepared by one to seven any specific implementation mode of specific implementation mode
The application of 2Cr-2Nb alloy powders, the powder diameter are distributed 15 ~ 45 μm, D50（Average grain diameter）≤ 32 μm, oxygen content≤
1000ppm, the power applications that sphericity is 90% ~ 95% are in laser fusion metal deposit increasing material manufacturing.
Specific implementation mode nine：A kind of Ti-48Al- prepared by one to seven any specific implementation mode of specific implementation mode
The application of 2Cr-2Nb alloy powders, the powder diameter are distributed as 106 ~ 205 μm：3.0%~5.0%、75~106μm：40%~
45%、45~75μm：40%~53%、0~45μm：3.0% ~ 6.0%, wherein particle diameter distribution is 45 ~ 106 μm, oxygen content≤1000ppm,
The Ti-48Al-2Cr-2Nb alloy powders that sphericity is 90% ~ 95%, be applied to electron beam melting increasing material manufacturing and laser three-dimensional at
Shape technical field.
Embodiment 1：
（1）Alloy melting：Melting is carried out to Ti-48Al-2Cr-2Nb alloy raw materials；Alloying component is：Al：46.2%, Cr：
2.4%, Nb：2.3%, B：0.15%, remaining is Ti；
（2）Machined electrode：Finishing processing is carried out into electrode pole to the Ti-48Al-2Cr-2Nb alloy bars of melting, it is a diameter of
70mm, length 500mm；
（3）Powder by atomization：In feed compartment, by Ti-48Al-2Cr-2Nb alloy electrode poles, vertical fixed clamp is in elevator
On structure；Feed compartment is closed, by vacuum pipe to feed compartment, working chamber and spray chamber forvacuum, vacuum degree≤6.7 × 10- 2Then Pa, step-up ratio≤0.67Pa/h, pumpdown time≤15 minute are filled with by gas ducting to working chamber and spray chamber
Inert gas shielding, it is 1.1 atm to make cavity indoor pressure；It is driven by motor, the electrode slowly rotated is placed in radio-frequency induction coil
In circle, electrode rotary keeps the rotating speed of 60rpm, and the feed speed of electrode is 50mm/min；The induced power 90kW of coil, electrode
Fusing forms tiny liquid stream, drips naturally；The valve of annular distance gas atomizing nozzle is opened simultaneously, pressure 3MPa works as aluminium alloy
When flowing through annular distance gas atomizing nozzle, liquid stream uniformly, is fully smashed and is coagulated by the high-speed flow that annular distance gas atomizing nozzle generates
Solid is cooled into powder at attritive powder particle；
（4）Inert gas reclaiming clean：Inert gas after atomization is cooled down through heat exchanger, passes through cyclone filter, fine mistake
Filter filters, and is compressed by the compressor to gas purge system and purifies, purified gas cools down through heat exchanger, by one stage of compression
Machine is compressed to heat exchanger and further cools down, then is compressed inert gas after pulse buffer tank is stablized by high pressure compressor,
Reach the atomizing pressure and gas flow rate of the requirement of atomization process condition, gas can participate in atomization process again.
（5）Powder collects screening：After powder cooling, through cyclone collection；Using vibrating screen in inert gas shielding
The reactive alloys powder of particle size range needed for lower screening is simultaneously packed.
15 ~ 45 μm of the powder diameter distribution of preparation, D50=31 μm, oxygen content 750ppm, sphericity 93%.
The powder diameter of preparation is distributed 45 ~ 106 μm, and particle diameter distribution is 106 ~ 205 μm： 4.1%、75~106μm：42%、45~
75μm: 50.7%、0~45μm：3.2%, oxygen content 750ppm, the spherical powder of sphericity 94%.
Embodiment 2：
（1）Alloy melting：Melting is carried out to Ti-48Al-2Cr-2Nb alloy raw materials；Alloying component is：Al：47.5%, Cr：
2.0%, Nb：1.9%, B：0.1%, Y：0.15%, remaining is Ti；
（2）Machined electrode：Finishing processing is carried out into electrode pole to the Ti-48Al-2Cr-2Nb alloy bars of melting, it is a diameter of
70mm, length 500mm；
（3）Powder by atomization：In feed compartment, by Ti-48Al-2Cr-2Nb alloy electrode poles, vertical fixed clamp is in elevator
On structure；Feed compartment is closed, by vacuum pipe to feed compartment, working chamber and spray chamber forvacuum, vacuum degree≤6.7 × 10- 2Then Pa, step-up ratio≤0.67Pa/h, pumpdown time≤15 minute are filled with by gas ducting to working chamber and spray chamber
Inert gas shielding, it is 1.1 atm to make cavity indoor pressure；It is driven by motor, the electrode slowly rotated is placed in radio-frequency induction coil
In circle, electrode rotary keeps the rotating speed of 100rpm, and the feed speed of electrode is 100mm/min；The induced power 100kW of coil,
Electrode melting forms tiny liquid stream, drips naturally；The valve of annular distance gas atomizing nozzle is opened simultaneously, pressure 4MPa works as conjunction
When golden liquid stream is through annular distance gas atomizing nozzle, liquid stream uniformly, is fully smashed by the high-speed flow that annular distance gas atomizing nozzle generates
And solidify and form attritive powder particle, it is cooled into powder；
（4）Inert gas reclaiming clean：Inert gas after atomization is cooled down through heat exchanger, passes through cyclone filter, fine mistake
Filter filters, and is compressed by the compressor to gas purge system and purifies, purified gas cools down through heat exchanger, by one stage of compression
Machine is compressed to heat exchanger and further cools down, then is compressed inert gas after pulse buffer tank is stablized by high pressure compressor,
Reach the atomizing pressure and gas flow rate of the requirement of atomization process condition, gas can participate in atomization process again.
（5）Powder collects screening：After powder cooling, through cyclone collection, using vibrating screen in inert gas shielding
The reactive alloys powder of particle size range needed for lower screening is simultaneously packed.
15 ~ 45 μm of the powder diameter distribution of preparation, D50=28 μm, oxygen content 800ppm, sphericity 95%.
The powder diameter of preparation is distributed 45 ~ 106 μm, and particle diameter distribution is 106 ~ 205 μm： 3.1%、75~106μm：45%、45~
75μm：47.1%, 0 ~ 45 μm：4.8%, oxygen content 800ppm, the spherical powder of sphericity 94%.
Embodiment 3：
（1）Alloy melting：Melting is carried out to Ti-48Al-2Cr-2Nb alloy raw materials；Al：48.6%, Cr：1.7%, Nb：1.5%,
Y：0.15%, remaining is Ti；
（2）Machined electrode：Finishing processing is carried out into electrode pole to the Ti-48Al-2Cr-2Nb alloy bars of melting, it is a diameter of
70mm, length 500mm；
（3）Powder by atomization：In feed compartment, by Ti-48Al-2Cr-2Nb alloy electrode poles, vertical fixed clamp is in elevator
On structure；Feed compartment is closed, by vacuum pipe to feed compartment, working chamber and spray chamber forvacuum, vacuum degree≤6.7 × 10- 2Then Pa, step-up ratio≤0.67Pa/h, pumpdown time≤15 minute are filled with by gas ducting to working chamber and spray chamber
Inert gas shielding, it is 1 atm to make cavity indoor pressure；It is driven by motor, the electrode slowly rotated is placed in radio-frequency induction coil
In, electrode rotary keeps the rotating speed of 50rpm, and the feed speed of electrode is 40mm/min；The induced power 70kW of coil, electrode are molten
Change forms tiny liquid stream, drips naturally；The valve of annular distance gas atomizing nozzle is opened simultaneously, pressure 2.5MPa works as aluminium alloy
When flowing through annular distance gas atomizing nozzle, liquid stream uniformly, is fully smashed and is coagulated by the high-speed flow that annular distance gas atomizing nozzle generates
Solid is cooled into powder at attritive powder particle；
（4）Inert gas reclaiming clean：Inert gas after atomization is cooled down through heat exchanger, passes through cyclone filter, fine mistake
Filter filters, and is compressed by the compressor to gas purge system and purifies, purified gas cools down through heat exchanger, by one stage of compression
Machine is compressed to heat exchanger and further cools down, then is compressed inert gas after pulse buffer tank is stablized by high pressure compressor,
Reach the atomizing pressure and gas flow rate of the requirement of atomization process condition, gas can participate in atomization process again.
（5）Powder collects screening：After powder cooling, through cyclone collection, using vibrating screen in inert gas shielding
The reactive alloys powder of particle size range needed for lower screening is simultaneously packed.
15 ~ 45 μm of the powder diameter distribution of preparation, D50=32 μm, oxygen content 800ppm, sphericity 94%.
The powder diameter of preparation is distributed 45 ~ 106 μm, and particle diameter distribution is 106 ~ 205 μm：4.9%、75~106μm：40%、45~
75μm：52.1%, 0 ~ 45 μm：3.0%, oxygen content 750ppm, the spherical powder of sphericity 94%.
Claims (9)
1. a kind of preparation method of Ti-48Al-2Cr-2Nb alloy powders, it is characterised in that：Steps are as follows for the method：
Step 1：Alloy melting：Ti-48Al-2Cr-2Nb alloy cast ingots are prepared using water jacketed copper crucible induction melting method, are melted
It is 1700 ~ 1900 DEG C to refine temperature, smelting time 30 ~ 45 minutes；
Step 2：Machined electrode：Finishing processing is carried out to the Ti-48Al-2Cr-2Nb alloy cast ingots prepared in step 1, by Ti-
48Al-2Cr-2Nb alloy cast ingots are processed into Ti-48Al-2Cr-2Nb alloy electrode poles（3）；
Step 3：Powder by atomization：In feed compartment（2）Ti-48Al-2Cr-2Nb alloy electrode poles that are interior, will being obtained in step 2
（3）, vertical fixed clamp is in hoisting mechanism（1）On；Close feed compartment（2）, start the vacuum system of powder by atomization equipment, to mist
Change the working chamber of powder manufacturing apparatus（5）And spray chamber（8）Forvacuum, when vacuum degree≤6.7 × 10-2Pa, step-up ratio≤0.67Pa/
When h, pass through gas ducting（10）To working chamber（5）And spray chamber（8）It is filled with inert gas shielding, makes working chamber（5）And atomization
Room（8）Interior pressure is 0.9 ~ 1.1atm；It is driven by motor, the Ti-48Al-2Cr-2Nb alloy electrode poles that will slowly rotate（3）
It is placed in working chamber（5）And spray chamber（8）Interior radio-frequency induction coil（6）In, electrode rotary keeps certain rotating speed, the feeding of electrode
Velocity interval is 0 ~ 100mm/min；For the induced power of coil between 70 ~ 100kW, electrode melting forms liquid stream, drips naturally；
Start the annular distance gas atomizing nozzle in powder by atomization equipment at this time（7）, stream pressure range works as Ti-48Al- in 2.5 ~ 4MPa
2Cr-2Nb aluminium alloys flow through annular distance gas atomizing nozzle（7）When, liquid stream is by annular distance gas atomizing nozzle（7）The air-flow of generation is equal
It is even, fully smash and solidify to form attritive powder particle, be cooled into powder；
Step 4：Inert gas reclaiming clean：It participates in the inert gas after atomization and passes through cyclone filter, fine filter mistake
Filter is then compressed to gas purge system through compressor, it is purified after gas through heat exchanger be down to room temperature, then pass through height
After pressing compressor compresses and pulse buffer tank to stablize, reach the atomizing pressure and gas flow rate of the requirement of atomization process condition, gas
Again atomization process is participated in；
Step 5：Powder collects screening：After powder is cooled to room temperature, through cyclone collection, using vibrating screen in indifferent gas
The reactive alloys powder of particle size range needed for the lower screening of body protection is simultaneously packed.
2. according to a kind of preparation method of Ti-48Al-2Cr-2Nb alloy powders described in claim 1, it is characterised in that：Step
Rapid a kind of, the Ti-48Al-2Cr-2Nb alloy raw materials are made of according to weight percent following element：Al：46%~49%、
Cr：1.5%~2.5%、Nb：1.5%~2.5%、B：0%~0.5%、Y：0% ~ 0.5%, remaining is Ti.
3. a kind of preparation method of Ti-48Al-2Cr-2Nb alloy powders according to claim 1, it is characterised in that：Step
In rapid two, a diameter of 50 ~ 100mm of the Ti-48Al-2Cr-2Nb alloy electrode poles, length is 500 ~ 700mm.
4. a kind of preparation method of Ti-48Al-2Cr-2Nb alloy powders according to claim 1, it is characterised in that：Step
In rapid three, the method for clamping is pneumatic pinch.
5. a kind of preparation method of Ti-48Al-2Cr-2Nb alloy powders according to claim 1, it is characterised in that：Step
In rapid three, the inert gas is high-purity argon gas or helium.
6. a kind of preparation method of Ti-48Al-2Cr-2Nb alloy powders according to claim 1, it is characterised in that：Step
In rapid three, the rotating speed of motor rotation is 40 ~ 100rpm.
7. a kind of preparation method of Ti-48Al-2Cr-2Nb alloy powders according to claim 1, it is characterised in that：Step
In rapid four, the recycling tolerance of the inert gas recovering and purifying system is in the range of 90 ~ 95%.
8. a kind of application of Ti-48Al-2Cr-2Nb alloy powders prepared by claim 1 ~ 7 any claim, feature exist
In：15 ~ 45 μm of the powder diameter distribution, D50≤32 μm, oxygen content≤1000ppm, the powder that sphericity is 90% ~ 95%
Applied to laser fusion metal deposit increasing material manufacturing.
9. a kind of application of Ti-48Al-2Cr-2Nb alloy powders prepared by claim 1 ~ 7 any claim, feature exist
In：The powder diameter is distributed as 106 ~ 205 μm：3.0%~5.0%、75~106μm：40%~45%、45~75μm：40%~53%、0
~45μm：3.0% ~ 6.0%, wherein particle diameter distribution is 45 ~ 106 μm, oxygen content≤1000ppm, the Ti- that sphericity is 90% ~ 95%
48Al-2Cr-2Nb alloy powders are applied to electron beam melting increasing material manufacturing and laser solid forming technical field.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0593213A (en) * | 1991-06-04 | 1993-04-16 | Sumitomo Shichitsukusu Kk | Production of titanium and titanium alloy powder |
| CN1359774A (en) * | 2000-12-04 | 2002-07-24 | 普莱克斯技术有限公司 | Method and device for producing atomized powder using recirculating atomized gas |
| CN204545419U (en) * | 2015-03-10 | 2015-08-12 | 沈阳好智多新材料制备技术有限公司 | A kind of high vacuum induction is without crucible and have crucible inert gas atomizer powder manufacturing apparatus |
| CN105689730A (en) * | 2016-02-24 | 2016-06-22 | 西安欧中材料科技有限公司 | Method for preparing Inconel 625 alloy spherical powder |
| CN205869473U (en) * | 2016-08-04 | 2017-01-11 | 浙江亚通焊材有限公司 | Preparation vibration material disk metal powder's no crucible gas atomizing device |
| CN106424748A (en) * | 2016-12-03 | 2017-02-22 | 东北大学 | Alloyed spherical powder preparation device and method for laser 3D (three-dimensional) printing |
| CN106636748A (en) * | 2017-01-24 | 2017-05-10 | 上海材料研究所 | TC4 titanium alloy powder for 3D (Three Dimensional) printing and preparation method thereof |
| CN107876794A (en) * | 2017-12-21 | 2018-04-06 | 西安欧中材料科技有限公司 | The Mo powder of increasing material manufacturing, the preparation method of Mo alloy spherical powder |
-
2018
- 2018-04-23 CN CN201810367998.7A patent/CN108480651A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0593213A (en) * | 1991-06-04 | 1993-04-16 | Sumitomo Shichitsukusu Kk | Production of titanium and titanium alloy powder |
| CN1359774A (en) * | 2000-12-04 | 2002-07-24 | 普莱克斯技术有限公司 | Method and device for producing atomized powder using recirculating atomized gas |
| CN204545419U (en) * | 2015-03-10 | 2015-08-12 | 沈阳好智多新材料制备技术有限公司 | A kind of high vacuum induction is without crucible and have crucible inert gas atomizer powder manufacturing apparatus |
| CN105689730A (en) * | 2016-02-24 | 2016-06-22 | 西安欧中材料科技有限公司 | Method for preparing Inconel 625 alloy spherical powder |
| CN205869473U (en) * | 2016-08-04 | 2017-01-11 | 浙江亚通焊材有限公司 | Preparation vibration material disk metal powder's no crucible gas atomizing device |
| CN106424748A (en) * | 2016-12-03 | 2017-02-22 | 东北大学 | Alloyed spherical powder preparation device and method for laser 3D (three-dimensional) printing |
| CN106636748A (en) * | 2017-01-24 | 2017-05-10 | 上海材料研究所 | TC4 titanium alloy powder for 3D (Three Dimensional) printing and preparation method thereof |
| CN107876794A (en) * | 2017-12-21 | 2018-04-06 | 西安欧中材料科技有限公司 | The Mo powder of increasing material manufacturing, the preparation method of Mo alloy spherical powder |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109877332A (en) * | 2019-04-16 | 2019-06-14 | 上海材料研究所 | A method of improving titanium or titanium alloy gas-atomised powders fine powder rate |
| CN110496960A (en) * | 2019-08-30 | 2019-11-26 | 鑫精合激光科技发展（北京）有限公司 | A kind of increasing material manufacturing metal powder |
| CN110496960B (en) * | 2019-08-30 | 2021-12-03 | 鑫精合激光科技发展（北京）有限公司 | Metal powder for additive manufacturing |
| CN110624495A (en) * | 2019-11-04 | 2019-12-31 | 锦益创典(天津)科技有限责任公司 | Nitrosation continuous reaction device and method |
| CN110639445A (en) * | 2019-11-04 | 2020-01-03 | 锦益创典(天津)科技有限责任公司 | Device and method for spray continuous reaction |
| CN112853157A (en) * | 2020-12-31 | 2021-05-28 | 广州湘龙高新材料科技股份有限公司 | Cobalt-chromium-molybdenum-tungsten-silicon alloy bar |
| CN112853157B (en) * | 2020-12-31 | 2021-11-30 | 广州湘龙高新材料科技股份有限公司 | Cobalt-chromium-molybdenum-tungsten-silicon alloy bar and preparation method thereof |
| CN113042741A (en) * | 2021-03-15 | 2021-06-29 | 中天上材增材制造有限公司 | Preparation method of metal powder or alloy powder for 3D printing and energy-saving automatic system |
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