CN103949651B - A kind of preparation method of unleaded antifriction anticorrosion alloy dusty material - Google Patents
A kind of preparation method of unleaded antifriction anticorrosion alloy dusty material Download PDFInfo
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- 239000000956 alloy Substances 0.000 title claims abstract description 50
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000000463 material Substances 0.000 title claims description 27
- 239000002699 waste material Substances 0.000 claims abstract description 39
- 239000000843 powder Substances 0.000 claims abstract description 34
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229910000906 Bronze Inorganic materials 0.000 claims abstract description 27
- 239000010974 bronze Substances 0.000 claims abstract description 27
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 27
- 238000002844 melting Methods 0.000 claims abstract description 24
- 230000008018 melting Effects 0.000 claims abstract description 24
- 238000000889 atomisation Methods 0.000 claims abstract description 23
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 22
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000010949 copper Substances 0.000 claims abstract description 21
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000010703 silicon Substances 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052802 copper Inorganic materials 0.000 claims abstract description 16
- 239000011135 tin Substances 0.000 claims abstract description 16
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000004411 aluminium Substances 0.000 claims abstract description 15
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 6
- 239000011574 phosphorus Substances 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 238000005275 alloying Methods 0.000 claims abstract description 4
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000007670 refining Methods 0.000 claims abstract description 4
- 238000012216 screening Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 36
- 239000002893 slag Substances 0.000 claims description 26
- 238000013467 fragmentation Methods 0.000 claims description 12
- 238000006062 fragmentation reaction Methods 0.000 claims description 12
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 9
- 239000003610 charcoal Substances 0.000 claims description 9
- 239000011521 glass Substances 0.000 claims description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 238000003723 Smelting Methods 0.000 claims description 6
- 230000003064 anti-oxidating effect Effects 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 5
- 238000010334 sieve classification Methods 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 229910052718 tin Inorganic materials 0.000 description 7
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000007873 sieving Methods 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- WIKSRXFQIZQFEH-UHFFFAOYSA-N [Cu].[Pb] Chemical compound [Cu].[Pb] WIKSRXFQIZQFEH-UHFFFAOYSA-N 0.000 description 1
- 238000012387 aerosolization Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 231100000701 toxic element Toxicity 0.000 description 1
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Abstract
The embodiment of the invention discloses a kind of preparation method of unleaded antifriction anticorrosion alloy powder, it comprises the following steps, batching, select copper scrap tin silk, aluminium bronze waste material, silicon bronze waste material, phosphor bronze waste material, calculate alloy composition, make composition meet the percentage by weight of alloying element composition, wherein copper Cu accounts for 90.3 ~ 94%, tin Sn accounts for 6 ~ 7%, and aluminium Al accounts for 0 ~ 2%, phosphorus P account for 0.1 ~ 0.5% and silicon Si account for 0 ~ 0.2% raw material; Melting, according to first add stanniferous waste material, after add containing aluminium, scrap silicon control charging sequence, alloy composition detects; Add phosphorous waste material and carry out melting; Refining deslagging; Atomization; Screening.The present invention is in order to the method by utilizing production waste production to have the copper-base alloy powder product meeting environment protection requirement.
Description
Technical field
The invention belongs to alloy powder preparing technical field, particularly the preparation method of wear-resisting, the corrosion resistant alloy powder of a kind of aerosolization CuSnAlPSi five yuan of gold.
Background technology
Traditional manufacture bearing, the copper-base alloy powder of bearing shell are made up of copper, tin, zinc, P elements.Due to plumbous containing toxic element, harmful in material, there is pollution to environment, unleaded as a kind of development trend.
Chinese patent ZL200910154059.5 discloses a kind of method preparing lead-free copper-based alloy powder, and the method is owing to applying the raw materials such as the copper of comparatively high-quality, and cheap material uses limited, and the prices of raw and semifnished materials are high, and manufacturing cost is high.Chinese Patent Application No. 200810072435.1 discloses a kind of novel alloy powder, weight consists of bismuth 1 ~ 15%, tin 0.5 ~ 10%, zinc 0.3 ~ 15%, and surplus is copper, employs expensive bismuth metal in this alloy composition, and the single extracting metals used, manufacturing cost is high.
Alloy powder many uses high-quality prepared by the method more than used and the raw material of high cost, for the country that per capita resources, the energy are not in plenty, reduction resource, energy resource consumption are the plans of country, therefore a kind of low energy expenditure is found, resource regeneration fully utilizes rational technique for reduction enterprise production cost, and the raising energy, level of resource utilization have profound significance.
Summary of the invention
For solving the problem, the object of the present invention is to provide a kind of preparation method of unleaded antifriction anticorrosion alloy dusty material, in order to the method by utilizing production waste production to have the copper-base alloy powder product meeting environment protection requirement.
For achieving the above object, technical scheme of the present invention is:
A preparation method for unleaded antifriction anticorrosion alloy dusty material, comprises the following steps:
S10, batching, select copper scrap tin silk, aluminium bronze waste material, silicon bronze waste material, phosphor bronze waste material, calculating alloy forms, make composition meet the percentage by weight of alloying element composition, wherein copper Cu accounts for 90.3 ~ 94%, and tin Sn accounts for 6 ~ 7%, aluminium A1 accounts for 0 ~ 2%, phosphorus P account for 0.1 ~ 0.5% and silicon Si account for 0 ~ 0.2% raw material;
S20, melting, according to first add stanniferous waste material, after add containing aluminium, scrap silicon control charging sequence, alloy composition detects, and smelting temperature is between 1100 ~ 1300 DEG C;
S30, adds phosphorous waste material and carries out melting;
S40, refining deslagging, adds charcoal and covers bath surface, make Reduction of Oxide, limpid to melt, and glass deslagging, without slag inclusion, if any slag, is added in surface;
S50, atomization, pours alloy mixed liquor into bottom pour ladle, bottom pour ladle aperture is at 3.5 ~ 5.0mm, liquid flows through bottom pour ladle hole and flows into atomizing cup, and adopt air compressor machine to produce high-speed gas and carry out fragmentation formation drop to mixed liquor liquid stream, the mixed liquor drop after fragmentation condenses in dropping process becomes spherical powder particle;
S60, screening, carries out sieve classification by cooled spherical powder bushing screen and can obtain unleaded antifriction anticorrosion alloy dusty material.
Preferably, in S20, when composition Si, Al occurring and going beyond the scope, carry out oxygen blast slag making, make Si and Al of over range produce silica and aluminium oxide respectively.
Preferably, further, aluminium alloy is poured into bottom pour ladle in S50 specific as follows, keep the liquid level of tundish at any time, and cover charcoal, anti-oxidation, before atomization terminates, tundish feed liquid top layer application glass deslagging, when centre is surrounded by 1/3 feed liquid, stops atomization, feed liquid is toppled over, enter next melting, prevent slag inclusion thing from entering atomized powder.
Preferably, in S50, nozzle bore is 2.0 ~ 4.0mm, and nozzle hole number is 6 ~ 14, and nozzle angle is 8 ~ 20 degree, air compressor machine pressure 0.6 ~ 1.3MPa.
Preferably, described atomizing cup inside holding heated height is 3 ~ 10 meters.
Compared with prior art, beneficial effect of the present invention is as follows: by selecting different waste materials, by adjustment alloy composition, achieves the requirement that product is unleaded, has saved cost simultaneously, reduce resource, energy resource consumption; Employ the bearing material of this product sintering, its wearability and bond strength can reach the requirement of sintering bimetallic.The present invention is the new material of alternative CuPbSn alloy, is mainly used in the aspect such as component of machine, automobile bearing, improves the impact of lead-containing materials on environment, avoids plumbous harm, meanwhile, also reduces energy resource consumption.
Accompanying drawing explanation
Fig. 1 is the flow chart of steps of the preparation method of the unleaded antifriction anticorrosion alloy dusty material of the embodiment of the present invention.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
On the contrary, the present invention is contained any by the substituting of making on marrow of the present invention and scope of defining of claim, amendment, equivalent method and scheme.Further, in order to make the public have a better understanding to the present invention, in hereafter details of the present invention being described, detailedly describe some specific detail sections.Do not have the description of these detail sections can understand the present invention completely for a person skilled in the art yet.
See Fig. 1, be depicted as the preparation method of a kind of unleaded antifriction anticorrosion alloy dusty material of the embodiment of the present invention, it is characterized in that, comprise the following steps:
S10, batching, select copper scrap tin silk, aluminium bronze waste material, silicon bronze waste material, phosphor bronze waste material, calculating alloy forms, make composition meet the percentage by weight of alloying element composition, wherein copper Cu accounts for 90.3 ~ 94%, and tin Sn accounts for 6 ~ 7%, aluminium Al accounts for 0 ~ 2%, phosphorus P account for 0.1 ~ 0.5% and silicon Si account for 0 ~ 0.2% raw material;
S20, melting, according to first add stanniferous waste material, after add containing aluminium, scrap silicon control charging sequence, alloy composition detects, and smelting temperature is between 1100 ~ 1300 DEG C;
S30, adds phosphorous waste material and carries out melting;
S40, refining deslagging, adds charcoal and covers bath surface, make Reduction of Oxide, limpid to melt, and glass deslagging, without slag inclusion, if any slag, is added in surface;
S50, atomization, pours alloy mixed liquor into bottom pour ladle, bottom pour ladle aperture is at 3.5 ~ 5.0mm, liquid flows through bottom pour ladle hole and flows into atomizing cup, and adopt air compressor machine to produce high-speed gas and carry out fragmentation formation drop to mixed liquor liquid stream, the mixed liquor drop after fragmentation condenses in dropping process becomes spherical powder particle;
In embody rule example, pour aluminium alloy into bottom pour ladle specific as follows, keep the liquid level of tundish at any time, and cover charcoal, anti-oxidation, before atomization terminates, tundish feed liquid top layer application glass deslagging, when centre is surrounded by 1/3 feed liquid, stop atomization, feed liquid is toppled over, enters next melting, prevented slag inclusion thing from entering atomized powder.
In embody rule example, nozzle bore is 2.0 ~ 4.0mm, and nozzle hole number is 6 ~ 14, and nozzle angle is 8 ~ 20 degree, air compressor machine pressure 0.6 ~ 1.3MPa.
Aluminium alloy drop broken in atomization process keeps the noncondensing height having 3 meters in dropping process in atomizing cup, otherwise broken fine drop cannot shrink balling-up.Therefore in embody rule example, atomizing cup inside holding heated height is 3 ~ 10 meters, and by increasing, atomizing cup is incubated, heated height can ensure that break up drops fully shrinks nodularization globulate powder.
S60, screening, carries out sieve classification by cooled spherical powder bushing screen and can obtain unleaded antifriction anticorrosion alloy dusty material.
In embody rule example, the upper sieve network planning lattice of bushing screen are generally 30 orders, 40 orders, 60 orders, 80 orders, 100 orders or 120 orders, and lower screen specification is generally 140 orders, 160 orders or 180 orders.
In other application example, further, in S20, when composition Si, Al occurring and going beyond the scope, carry out oxygen blast slag making, make Si and Al of over range produce silica and aluminium oxide respectively.By carrying out oxygen blast operation, excessive Si and Al oxidation reaction is made to produce corresponding oxide slag charge.
The implementation process of the embodiment of the present invention is described below by way of embody rule example.
Embodiment 1
(1) prepare burden
In strict accordance with burdening calculation, take the copper tin silk waste material 15Kg containing Sn8%, containing the Al bronze scrap 50.0Kg of Al8%, containing the Si bronze scrap 10.0Kg of Si4.0%, containing the phosphor bronze waste material 125.0Kg of Sn10.24%, P0.32%, add up to furnace charge 200Kg.Make lead-free copper-based alloy powder constituent in batching: Cu90.3%, Sn7%, Al2%, P0.5%, Si0.2%.
(2) reinforced melting
According to first add copper tin waste material, after add containing the melting of aluminium waste sequential feeds, smelting temperature is 1100 DEG C.
Because in the material of proportioning, there is not aluminium to exceed standard, therefore do not need to do oxygen blast process.
(3) slag making, adds solvent slag making, drags for slag.
(4) add silicon bronze, finally phosphorate bronze scrap, and melting terminates, and carries out atomization operation.
(5) be atomized, pour alloy mixed liquor into bottom pour ladle, bottom pour ladle aperture is 5.0mm, liquid flows through bottom pour ladle hole and flows into atomizing cup, adopt air compressor machine to produce high-speed gas, by nozzle, fragmentation formation drop is carried out to mixed liquor liquid stream, mixed liquor drop after fragmentation condenses in dropping process becomes spherical powder particle, and wherein nozzle bore is 4.0mm, and nozzle hole number is 14, nozzle angle is 8 degree, air compressor machine pressure 1.3MPa.
During atomization operation, keep the liquid level of tundish at any time, and cover charcoal, anti-oxidation.Before atomization terminates, tundish feed liquid top layer application glass deslagging, when centre is surrounded by 1/3 feed liquid, stops atomization, feed liquid is toppled over, enter next melting, prevented slag inclusion thing from entering atomized powder.
(6) sieve, require to carry out sieving the unleaded antifriction anticorrosion alloy powder namely obtaining the embodiment of the present invention according to order number.
Upper sieve network planning lattice are 120 orders, and lower screen specification is 180 orders.
The sintered bearing material serviceability detection table of the product prepared by above embodiment is as follows:
Embodiment 2
(1) prepare burden
In strict accordance with burdening calculation, take the copper tin silk waste material 13.2Kg containing Sn8%, containing the Al bronze scrap 35.0Kg of Al4.5%, containing the Si bronze scrap 13.0Kg of Si3.0%, containing the phosphor bronze waste material 150.0Kg of Sn8.0%, P0.17%, add up to furnace charge 211.2Kg.Make lead-free copper-based alloy powder constituent in batching: Cu92.75%, Sn6.2%, Al0.75%, Si0.18%, P0.12%, containing Al higher 0.25% during furnace charge calculates.
(2) reinforced melting
According to first add copper tin waste material, after add containing the melting of aluminium waste sequential feeds, smelting temperature is 1200 DEG C.
(3) oxygen blast takes off Al, passes into compressed air at aluminium alloy, pressure 0.12Mpa, and flow 2m3/h takes off Al time 3min.
(4) slag making, adds solvent slag making, drags for slag.
(5) add silicon bronze, finally phosphorate bronze scrap, and melting terminates, and carries out atomization operation.
(6) be atomized, pour alloy mixed liquor into bottom pour ladle, bottom pour ladle aperture is 3.0mm, liquid flows through bottom pour ladle hole and flows into atomizing cup, adopt air compressor machine to produce high-speed gas, by nozzle, fragmentation formation drop is carried out to mixed liquor liquid stream, mixed liquor drop after fragmentation condenses in dropping process becomes spherical powder particle, and wherein nozzle bore is 2.0mm, and nozzle hole number is 10, nozzle angle is 20 degree, air compressor machine pressure 0.6MPa
During atomization operation, keep the liquid level of tundish at any time, and cover charcoal, anti-oxidation.Before atomization terminates, tundish feed liquid top layer application glass deslagging, when centre is surrounded by 1/3 feed liquid, stops atomization, feed liquid is toppled over, enter next melting, prevented slag inclusion thing from entering atomized powder.
(7) sieve, require to carry out sieving the unleaded antifriction anticorrosion alloy powder namely obtaining the embodiment of the present invention according to order number.
Upper sieve network planning lattice are 30 orders, and lower screen specification is 160 orders.
The unleaded antifriction anticorrosion alloy powder prepared by above embodiment is as shown in the table as sintered bearing material serviceability examining report:
Embodiment 3
(1) prepare burden
In strict accordance with burdening calculation, take the copper tin silk waste material 13.2Kg containing Sn8%, containing the Al bronze scrap 35.0Kg of Al4.5%, containing the Si bronze scrap 13.0Kg of Si3.0%, containing the phosphor bronze waste material 150.0Kg of Sn8.0%, P0.17%, add up to furnace charge 211.2Kg.Make lead-free copper-based alloy powder constituent in batching: Cu93.8%Sn5.9%Al0.1%, P0.1%, %, Si0.1%.
(2) reinforced melting
According to first add copper tin waste material, after add containing the melting of aluminium waste sequential feeds, smelting temperature is 1300 DEG C.
(3) slag making, adds solvent slag making, drags for slag.
(4) add silicon bronze, finally phosphorate bronze scrap, and melting terminates, and carries out atomization operation.
(5) be atomized, pour alloy mixed liquor into bottom pour ladle, bottom pour ladle aperture is 3.0mm, liquid flows through bottom pour ladle hole and flows into atomizing cup, adopt air compressor machine to produce high-speed gas, by nozzle, fragmentation formation drop is carried out to mixed liquor liquid stream, mixed liquor drop after fragmentation condenses in dropping process becomes spherical powder particle, and wherein nozzle bore is 3.0mm, and nozzle hole number is 10, nozzle angle is 8 degree, air compressor machine pressure 1.0MPa.
During atomization operation, keep the liquid level of tundish at any time, and cover charcoal, anti-oxidation.Before atomization terminates, tundish feed liquid top layer application glass deslagging, when centre is surrounded by 1/3 feed liquid, stops atomization, feed liquid is toppled over, enter next melting, prevented slag inclusion thing from entering atomized powder.
(6) sieve, require to carry out sieving the unleaded antifriction anticorrosion alloy powder namely obtaining the embodiment of the present invention according to order number.
Upper sieve network planning lattice are 40 orders, and lower screen specification is 140 orders.
The unleaded antifriction anticorrosion alloy powder prepared by above embodiment is as shown in the table as sintered bearing material serviceability examining report:
Those skilled in the art it should be understood that, the proportioning by calculating adjustment respective metal element in embody rule example can realize the embodiment of the present invention.In the release sequence of aluminium bronze waste material, silicon bronze waste material, phosphor bronze waste material, strict control according to aluminium bronze, the input order of silicon bronze and last phosphor bronze, when aluminium and silicon excessive time, the content of aluminium and silicon is reduced by oxygen blast slag practice, because phosphorus is more oxidizable, therefore in melting step, finally add, make it to control to account for 90.3 ~ 94% at copper Cu, tin Sn accounts for 6 ~ 7%, and aluminium Al accounts for 0 ~ 2%, phosphorus P account for 0.1 ~ 0.5% and silicon Si account for 0 ~ 0.2%.
By adopting copper-lead bimetal powder body material to contrast, its formula is as following table:
The machinery of its sintered bearing and corrosion resistance detect as follows:
| Anti-bending strength | 470～565MPa |
| Tensile property | 5～18％ |
| Wearability | 0.08～0.14 |
| Decay resistance | Seawater corrosion speed 0.08mm/ |
Can be found out by above comparative example, the unleaded novel alloy material property that the materials recycling method that the present invention adopts is produced reaches the performance of plumbous bimetallic material completely, even be better than its performance, but owing to adopting by selecting different waste materials, by adjustment alloy composition, achieve the requirement that product is unleaded, greatly saved cost simultaneously, reduced resource, energy resource consumption.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a preparation method for unleaded antifriction anticorrosion alloy dusty material, is characterized in that, comprise the following steps:
S10, batching, select copper scrap tin silk, aluminium bronze waste material, silicon bronze waste material, phosphor bronze waste material, calculating alloy forms, make composition meet the percentage by weight of alloying element composition, wherein copper Cu accounts for 90.3 ~ 92.75%, and tin Sn accounts for 6 ~ 7%, aluminium Al accounts for 0 ~ 2%, phosphorus P account for 0.1 ~ 0.5% and silicon Si account for 0 ~ 0.2% raw material;
S20, melting, according to first add stanniferous waste material, after add containing aluminium, scrap silicon control charging sequence, alloy composition detects, and smelting temperature is between 1100 ~ 1300 DEG C;
S30, adds phosphorous waste material and carries out melting;
S40, refining deslagging, adds charcoal and covers bath surface, make Reduction of Oxide, limpid to melt, and glass deslagging, without slag inclusion, if any slag, is added in surface;
S50, atomization, pours alloy mixed liquor into bottom pour ladle, bottom pour ladle aperture is at 3.5 ~ 5.0mm, liquid flows through bottom pour ladle hole and flows into atomizing cup, and adopt air compressor machine to produce high-speed gas and carry out fragmentation formation drop to mixed liquor liquid stream, the mixed liquor drop after fragmentation condenses in dropping process becomes spherical powder particle;
S60, screening, carries out sieve classification by cooled spherical powder bushing screen and can obtain unleaded antifriction anticorrosion alloy dusty material.
2. the preparation method of unleaded antifriction anticorrosion alloy dusty material according to claim 1, is characterized in that, in S20, when composition Si, Al occurring and going beyond the scope, carries out oxygen blast slag making, makes Si and Al of over range produce silica and aluminium oxide respectively.
3. the preparation method of unleaded antifriction anticorrosion alloy dusty material according to claim 1 and 2, is characterized in that, further, pour aluminium alloy into bottom pour ladle in S50 specific as follows, keep the liquid level of tundish at any time, and cover charcoal, anti-oxidation, before atomization terminates, tundish feed liquid top layer application glass deslagging, when centre is surrounded by 1/3 feed liquid, stop atomization, feed liquid is toppled over, enters next melting, prevented slag inclusion thing from entering atomized powder.
4. the preparation method of unleaded antifriction anticorrosion alloy dusty material according to claim 1 and 2, is characterized in that, in S50, nozzle bore is 2.0 ~ 4.0mm, and nozzle hole number is 6 ~ 14, and nozzle angle is 8 ~ 20 degree, air compressor machine pressure 0.6 ~ 1.3MPa.
5. the preparation method of unleaded antifriction anticorrosion alloy dusty material according to claim 1, is characterized in that, described atomizing cup inside holding heated height is 3 ~ 10 meters.
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