CN105671361B - A kind of preparation method of alloy filter element - Google Patents
A kind of preparation method of alloy filter element Download PDFInfo
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- CN105671361B CN105671361B CN201610068598.7A CN201610068598A CN105671361B CN 105671361 B CN105671361 B CN 105671361B CN 201610068598 A CN201610068598 A CN 201610068598A CN 105671361 B CN105671361 B CN 105671361B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/06—Alloys based on copper with nickel or cobalt as the next major constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2027—Metallic material
- B01D39/2031—Metallic material the material being particulate
- B01D39/2034—Metallic material the material being particulate sintered or bonded by inorganic agents
-
- 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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/05—Metallic powder characterised by the size or surface area of the particles
- B22F1/052—Metallic powder characterised by the size or surface area of the particles characterised by a mixture of particles of different sizes or by the particle size distribution
-
- 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
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/002—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of porous nature
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
-
- 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
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
Abstract
The invention provides a kind of preparation method of alloy filter element, ball milling screening is carried out using the alloy powder raw material of specific alloy elements composition proportion, the powder for meeting granularity requirements is layered in batches blank is made, ultrasonic spray is carried out again, and by being heat-treated sintering process, the crushing strength under high temperature of alloy filter element is improved, while obtaining the performance parameters such as preferable pore size filter, filtration flux.
Description
Technical field
It is to be related to a kind of preparation method of alloy filter element specifically the present invention relates to field of alloy material.
Background technology
Mechanical property, processing performance, the corrosion resisting property of copper alloy are all preferable, and electrical and thermal conductivity performance is high, and height is chemically
Matter, the good stability for resisting corrosion and the plasticity of brilliance, so, turn into the material being most widely used in every field
One of.The invention belongs to field of alloy material, copper alloy has been widely used for disposal of pollutants gas deep purifying, industrial waste gas
In terms of purification, wastewater treatment.Other trace elements are added in ormolu can play a part of scale removal and antiscale.Copper
Alloy has the effect that in filtration treatment：1）, chlorine, oxygen and the solubility in liquid can be made by redox reaction
The concentration reduction of heavy metal ion, strengthens the corrosion resistance of metal pipe-wall；2）And during water contact, the oxygen of liquid at contact interface
Change reduction potential change very greatly, it is suppressed that the growth and breeding of microorganism, reduce the intensity of incrustation scale and heat exchange wall bonding；3）、
So that solid phase particles are in the state of suspended dispersed, it is suppressed that the generation of wax, dirt and corrosion.
Filter element is in the case of the identical of aperture, and when thickness changes within a certain range, the change of its infiltration capacity is several
Up to the order of magnitude.Therefore, only sample can be made thin as best one can from if precision and flow consider, but this is again and intensity requirement
Contradict, therefore, being exactly the effective way for solving this contradiction using sandwich construction.The method for producing multilayer filter is more, such as
The methods such as powder rolling, slurry extruding, slurry centrifugal casting.And the service life of sandwich construction component is by environment and material sheet
The influence of body, existing product is easily damaged in the working environment of high pressure and high temperature, and manufacture difficult, production technology cost compared with
It is high.
The content of the invention
In order to solve the above-mentioned technical problem, the invention provides a kind of preparation method of alloy filter element, using specific
The alloy powder raw material of elemental composition proportioning is layered base in batches, by ultrasonic spray, and by Technology for Heating Processing, improves and close
The crushing strength under high temperature and service life of gold filter component.The technical solution adopted by the present invention is：Preparation method includes following step
Suddenly：Ball mill mixing, layering base, ultrasonic spray and heat treatment step, used alloyed powder when prepared by alloy filter element
Powder stock is constituted comprising following element：C:1.80-2.50%, Si:0.30-0.40%, Ni:5.50-8.50%, Mo:2.00-
2.30%, Zr:0.50-1.50%, Hf:0.05-0.10%, Mn:2.00-2.50%, Fe:1.50-2.50%, Nb:0.40-0.60%,
Zn:3.50-4.50%, La:0.10-0.20%, S<0.005%, P<0.005%, surplus is Cu, and above-mentioned percentage is quality percentage
Than；The compression strength of alloy filter element is 700 ~ 800MPa, and maximum diameter of hole is 30 ~ 50 μm.
Ball mill mixing step is：55 ~ 65wt% alloy powder raw material is first subjected to ball milling, it is below 100 mesh to obtain granularity
Alloy powder I, remaining alloy powder raw material is then milled to below 200 mesh acquisition alloy powder II again, finally, mixed
Expect equipment in by alloy powder I and alloy powder II respectively with the fine copper powder below 200 mesh, according to mass ratio 2:1 ratio
Mixing 1~1.5 hour, so as to obtain alloy powder I and alloy powder II respectively.
Being layered base step is：First, 35 ~ 40wt% alloy powder I is taken, thickness is obtained for 1~2mm by casting machine
Piece base I；Again by alloy powder II on piece base I, thickness is obtained for 2~3mm piece bases II by casting machine；Then, measured under remainder
The alloy powder I, thickness is obtained for 2.5~3.5mm piece bases III by casting machine on the basis of piece base II.
Ultrasonic spraying step is：Piece base III is preheated into 20 ~ 30mins at 200~250 DEG C, ultrasonic wave spray is then carried out
Apply, spray distance is 15cm, spray gun translational speed is 15 ~ 18cm/s, and spray angle is 90 °, and the coating layer thickness after spraying is about
0.55~0.65mm；Wherein, the composition of solder wire material is included used in spraying：Cu:50 ~ 55%, Ni:5.5 ~ 7.5%, Si:0.3~
0.5%, above-mentioned percentage is mass percent.
Heat treatment step is：Piece base III after ultrasonic spray is placed in 300~400 DEG C of heating furnace and is sintered,
Soaking time is 1 ~ 1.5h, is cooled to after room temperature, then is warming up to 1000 ~ 1100 DEG C, insulation with 20 ~ 30 DEG C/min firing rate
0.5 ~ 1h, furnace cooling can obtain alloy filter element.
Preferably, the compression strength of alloy filter element finished product is 750 MPa, and maximum diameter of hole is 45 μm.
Preferably, alloy powder raw material is constituted comprising following element：C:1.80%, Si:0.35%, Ni:8.50%, Mo:
2.00%, Zr:1.20%, Hf:0.10%, Mn:2.50%, Fe:2.20%, Nb:0.40%, Zn:3.50%, La:0.20%, S:
0.002%, P:0.001%, surplus is Cu.
Preferably, alloy powder raw material is constituted comprising following element：C:2.00%, Si:0.30%, Ni:6.50%, Mo:
2.20%, Zr:0.80%, Hf:0.08%, Mn:2.00%, Fe:1.50%, Nb:0.50%, Zn:4.00%, La:0.15%, S:
0.002%, P:0.001%, surplus is Cu.
Preferably, alloy powder raw material is constituted comprising following element：C:2.50%, Si:0.40%, Ni:5.50%, Mo:
2.30%, Zr:1.50%, Hf:0.05%, Mn:2.20%, Fe:2.50%, Nb:0.60%, Zn:4.50%, La:0.10%, S:
0.002%, P:0.001%, surplus is Cu.
It is an advantage of the invention that：Ball milling screening is carried out using the alloy powder raw material of specific alloy elements composition proportion, will
The powder for meeting granularity requirements is layered blank is made in batches, then carries out ultrasonic spray, and by being heat-treated sintering process, improves
The crushing strength under high temperature of alloy filter element, while obtain the performance parameters such as preferable pore size filter, filtration flux.
Embodiment
With reference to embodiment and comparative example, the present invention is described in more detail.
Embodiment 1：
A kind of preparation method of alloy filter element, preparation method comprises the following steps：It is ball mill mixing, layering base, super
Sound wave is sprayed and heat treatment step, and used alloy powder raw material is constituted comprising following element when prepared by alloy filter element：
C:1.80%, Si:0.35%, Ni:8.50%, Mo:2.00%, Zr:1.20%, Hf:0.10%, Mn:2.50%, Fe:2.20%, Nb:
0.40%, Zn:3.50%, La:0.20%, S:0.002%, P:0.001%, surplus is Cu, and above-mentioned percentage is mass percent.Ball
Grinding batch mixing step is：65wt% alloy powder raw material is first subjected to ball milling, it is the alloy powder I below 100 mesh to obtain granularity,
Then remaining alloy powder raw material is milled to acquisition alloy powder II below 200 mesh again, finally, will be closed in mixing equipment
Bronze end I and alloy powder II respectively with the fine copper powder below 200 mesh, according to mass ratio 2:1 ratio is mixed 1 hour, from
And alloy powder I and alloy powder II are obtained respectively.Being layered base step is：40wt% alloy powder I is taken, passes through casting machine
Thickness is obtained for 1mm piece bases I；Again by alloy powder II on piece base I, thickness is obtained for 2mm piece bases II by casting machine；So
Afterwards, the alloy powder I measured under remainder, thickness is obtained for 2.5mm piece bases III on the basis of piece base II by casting machine.Ultrasound
Ripple spraying process is：Piece base III is preheated into 20mins at 200 DEG C, ultrasonic spray is then carried out, spray distance is 15cm, sprays
Rifle translational speed is 18cm/s, and spray angle is 90 °, and the coating layer thickness after spraying is about 0.55mm；Wherein, used in spraying
The composition of solder wire material is included：Cu:50%, Ni:5.5%, Si:0.3%, above-mentioned percentage is mass percent.Heat treatment step
For：Piece base III is placed in 300 DEG C of heating furnace and is sintered, soaking time is 1.5h, is cooled to after room temperature, then with 20 DEG C/
Min firing rate is warming up to 1000 DEG C, is incubated 1h, and furnace cooling can obtain alloy filter element.Alloy filter element into
The compression strength of product is 750 MPa, and maximum diameter of hole is 45 μm.
Embodiment 2：
A kind of preparation method of alloy filter element, preparation method comprises the following steps：It is ball mill mixing, layering base, super
Sound wave is sprayed and heat treatment step, and used alloy powder raw material is constituted comprising following element when prepared by alloy filter element：
C:2.00%, Si:0.30%, Ni:6.50%, Mo:2.20%, Zr:0.80%, Hf:0.08%, Mn:2.00%, Fe:1.50%, Nb:
0.50%, Zn:4.00%, La:0.15%, S:0.002%, P:0.001%, surplus is Cu, and above-mentioned percentage is mass percent.Ball
Grinding batch mixing step is：60wt% alloy powder raw material is first subjected to ball milling, it is the alloy powder I below 100 mesh to obtain granularity,
Then remaining alloy powder raw material is milled to acquisition alloy powder II below 200 mesh again, finally, will be closed in mixing equipment
Bronze end I and alloy powder II respectively with the fine copper powder below 200 mesh, according to mass ratio 2:1 ratio is mixed 1.5 hours,
So as to obtain alloy powder I and alloy powder II respectively.Being layered base step is：35wt% alloy powder I is taken, passes through curtain coating
Machine obtains thickness for 1.5mm piece bases I；Again by alloy powder II on piece base I, thickness is obtained for 2.5mm piece bases by casting machine
II；Then, the alloy powder I measured under remainder, thickness is obtained for 3mm piece bases III on the basis of piece base II by casting machine.It is super
Sound wave spraying process is：Piece base III is preheated into 30mins at 250 DEG C, ultrasonic spray is then carried out, spray distance is 15cm,
Spray gun translational speed is 15cm/s, and spray angle is 90 °, and the coating layer thickness after spraying is about 0.60mm；Wherein, spraying is used
The composition of solder wire material include：Cu:55%, Ni:6.5%, Si:0.4%, above-mentioned percentage is mass percent.Heat treatment step
For：Piece base III is placed in 350 DEG C of heating furnace and is sintered, soaking time is 1h, is cooled to after room temperature, then with 25 DEG C/
Min firing rate is warming up to 1050 DEG C, is incubated 1h, and furnace cooling can obtain alloy filter element.Alloy filter element into
The compression strength of product is 700 MPa, and maximum diameter of hole is 35 μm.
Embodiment 3：
A kind of preparation method of alloy filter element, preparation method comprises the following steps：It is ball mill mixing, layering base, super
Sound wave is sprayed and heat treatment step, and used alloy powder raw material is constituted comprising following element when prepared by alloy filter element：
C:2.50%, Si:0.40%, Ni:5.50%, Mo:2.30%, Zr:1.50%, Hf:0.05%, Mn:2.20%, Fe:2.50%, Nb:
0.60%, Zn:4.50%, La:0.10%, S:0.002%, P:0.001%, surplus is Cu, and above-mentioned percentage is mass percent.Ball
Grinding batch mixing step is：55wt% alloy powder raw material is first subjected to ball milling, it is the alloy powder I below 100 mesh to obtain granularity,
Then remaining alloy powder raw material is milled to acquisition alloy powder II below 200 mesh again, finally, will be closed in mixing equipment
Bronze end I and alloy powder II respectively with the fine copper powder below 200 mesh, according to mass ratio 2:1 ratio is mixed 1 hour, from
And alloy powder I and alloy powder II are obtained respectively.Being layered base step is：35wt% alloy powder I is taken, passes through casting machine
Thickness is obtained for 2mm piece bases I；Again by alloy powder II on piece base I, thickness is obtained for 2.5mm piece bases II by casting machine；So
Afterwards, the alloy powder I measured under remainder, thickness is obtained for 3mm piece bases III on the basis of piece base II by casting machine.Ultrasonic wave
Spraying process is：Piece base III is preheated into 25mins at 250 DEG C, ultrasonic spray is then carried out, spray distance is 15cm, spray gun
Translational speed is 15cm/s, and spray angle is 90 °, and the coating layer thickness after spraying is about 0.65mm；Wherein, welded used in spraying
The composition of wire material is included：Cu:50%, Ni:7.5%, Si:0.5%, above-mentioned percentage is mass percent.Heat treatment step is：
Piece base III is placed in 400 DEG C of heating furnace and is sintered, soaking time is 1.5h, is cooled to after room temperature, then with 30 DEG C/min
Firing rate be warming up to 1100 DEG C, be incubated 0.5h, furnace cooling can obtain alloy filter element.Alloy filter element finished product
Compression strength be 800 MPa, maximum diameter of hole be 50 μm.
Comparative example 1：
The alloy powder raw material of elemental composition of the present invention and content is will differ from, after being prepared using same processing step,
The compression strength of resulting filter element is only up to 500MPa.
Comparative example 2：
By elemental composition and content alloy powder raw material same as Example 1, using other heat treatment modes or technique
When prepared by parameter, the tensile strength highest of the filter element obtained by it only has 520MPa, and maximum diameter of hole is less than 25 μm.
By the preparation method of the present invention it can be seen from embodiment 1-3 and comparative example 1 and 2, using specific alloy elements
The alloy powder raw material of composition proportion carries out ball milling screening, the powder for meeting granularity requirements is layered in batches blank is made, then entered
Row ultrasonic spray, and by being heat-treated sintering process, improve the crushing strength under high temperature of alloy filter element, obtain simultaneously
The performance parameters such as preferable pore size filter, filtration flux, solve technical problem of the filter element under complicated harsh operating mode.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle and objective of the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent.
Claims (7)
1. a kind of preparation method of alloy filter element, it is characterised in that：The preparation method comprises the following steps：Ball milling is mixed
Material, layering base, ultrasonic spray and heat treatment step；Used alloy powder raw material when prepared by the alloy filter element
Include following element composition：C:1.80-2.50%, Si:0.30-0.40%, Ni:5.50-8.50%, Mo:2.00-2.30%, Zr:
0.50-1.50%, Hf:0.05-0.10%, Mn:2.00-2.50%, Fe:1.50-2.50%, Nb:0.40-0.60%, Zn:3.50-
4.50%, La:0.10-0.20%, S<0.005%, P<0.005%, surplus is Cu, and above-mentioned percentage is mass percent；It is described to close
The compression strength of gold filter component is 700 ~ 800 MPa, and maximum diameter of hole is 30 ~ 50 μm；
The ball mill mixing step is：55 ~ 65wt% alloy powder the raw material is first subjected to ball milling, acquisition granularity is 100 mesh
Following alloy powder I, is then milled to acquisition alloy powder II below 200 mesh by the remaining alloy powder raw material again,
Finally, in mixing equipment by alloy powder I and alloy powder II respectively with the fine copper powder below 200 mesh, according to mass ratio
2:1 ratio is mixed 1~1.5 hour, so as to obtain alloy powder I and alloy powder II respectively；
It is described layering base step be：First, take the 35 ~ 40wt% alloy powder I, by casting machine obtain thickness for 1~
2mm piece bases I；Again by the alloy powder II on described base I, thickness is obtained for 2~3mm piece bases II by casting machine；So
Afterwards, the alloy powder I measured under remainder, thickness is obtained for 2.5~3.5mm on the basis of described base II by casting machine
Piece base III.
2. preparation method according to claim 1, it is characterised in that：The ultrasonic spraying step is：By described base
III preheats 20 ~ 30mins at 200~250 DEG C, then carries out ultrasonic spray, spray distance is 15cm, and spray gun translational speed is
15 ~ 18cm/s, spray angle is 90 °, and the coating layer thickness after spraying is 0.55 ~ 0.65mm；Wherein, welding wire material used in spraying
The composition of material is included：Cu:50 ~ 55%, Ni:5.5 ~ 7.5%, Si:0.3 ~ 0.5%, above-mentioned percentage is mass percent.
3. preparation method according to claim 1 or 2, it is characterised in that：The heat treatment step is：By the ultrasonic wave
Piece base III after spraying, which is placed in 300~400 DEG C of heating furnace, carries out pre-sintering, and soaking time is 1 ~ 1.5h, is cooled to room temperature
Afterwards, then with 20 ~ 30 DEG C/min firing rate 1000 ~ 1100 DEG C are warming up to, are incubated 0.5 ~ 1h, furnace cooling can obtain described
Alloy filter element.
4. preparation method according to claim 1 or 2, it is characterised in that：The pressure resistance of the alloy filter element finished product
Spend for 750 MPa, maximum diameter of hole is 45 μm.
5. the preparation method of alloy filter element according to claim 1 or claim 2, it is characterised in that：The alloy powder raw material
Include following element composition：C:1.80%, Si:0.35%, Ni:8.50%, Mo:2.00%, Zr:1.20%, Hf:0.10%, Mn:
2.50%, Fe:2.20%, Nb:0.40%, Zn:3.50%, La:0.20%, S:0.002%, P:0.001%, surplus is Cu.
6. the preparation method of alloy filter element according to claim 1 or claim 2, it is characterised in that：The alloy powder raw material
Include following element composition：C:2.00%, Si:0.30%, Ni:6.50%, Mo:2.20%, Zr:0.80%, Hf:0.08%, Mn:
2.00%, Fe:1.50%, Nb:0.50%, Zn:4.00%, La:0.15%, S:0.002%, P:0.001%, surplus is Cu.
7. the preparation method of alloy filter element according to claim 1 or claim 2, it is characterised in that：The alloy powder raw material
Include following element composition：C:2.50%, Si:0.40%, Ni:5.50%, Mo:2.30%, Zr:1.50%, Hf:0.05%, Mn:
2.20%, Fe:2.50%, Nb:0.60%, Zn:4.50%, La:0.10%, S:0.002%, P:0.001%, surplus is Cu.
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