CN108060335A - A kind of high intensity corrodes aluminium alloy conveying screw rod - Google Patents
A kind of high intensity corrodes aluminium alloy conveying screw rod Download PDFInfo
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- CN108060335A CN108060335A CN201711356795.XA CN201711356795A CN108060335A CN 108060335 A CN108060335 A CN 108060335A CN 201711356795 A CN201711356795 A CN 201711356795A CN 108060335 A CN108060335 A CN 108060335A
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- aluminium alloy
- screw rod
- high intensity
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G33/00—Screw or rotary spiral conveyors
- B65G33/24—Details
- B65G33/26—Screws
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
-
- 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
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/10—Alloys based on aluminium with zinc as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/047—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/053—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with zinc as the next major constituent
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
The invention discloses a kind of high intensity to corrode aluminium alloy conveying screw rod, includes by mass percentage：Mg：8 11%, Mn：2 6%, Zn：7 9%, Ni：1 3%, Cu：1.3 2.1%, S:0.1‑0.2%,W:1.5 1.7%, Fe：1 2%, Sc：0.5 1.1%, Si：2.3 2.6%, P：0.2 0.5%, Ca：3.6 4.5%, B：1.2 1.3%, Mo：3 6%, Co：1.5 3.2%, Nb：0.5 0.8%, rare earth element 0.4 0.6%, remaining is Al and inevitable impurity；The present invention has excellent corrosion resistance, and intensity is high.
Description
Technical field
The present invention relates to a kind of high intensity to corrode aluminium alloy conveying screw rod.
Background technology
In sewage sludge processing using strainer squeezer or sleeping spiral shell discharging sedimentation centrifuge, be both needed to using flocculant with it is clear
Water is prepared in medicine-chest, and the proportioning of general medicine and clear water is some thousandths of, after being stirred continuously a few hours this requires clear water and medicine
Flocculant can just be dissolved in the water, and chemicals dosing plant conveying screw rod has certain acid-base property with flocculator during steel alloy, easily rotten
Erosion, need to often replace.
The content of the invention
The technical problems to be solved by the invention are, for above shortcoming existing in the prior art, to provide a kind of high intensity
Corrode aluminium alloy conveying screw rod.
The present invention solve more than technical problem technical solution be：A kind of high intensity corrodes aluminium alloy conveying screw rod, by matter
Amount percentages include：Mg：8-11%, Mn：2-6%, Zn：7-9%, Ni：1-3%, Cu：1.3-2.1%, S:0.1-0.2%,W:1.5-
1.7%, Fe：1-2%, Sc：0.5-1.1%, Si：2.3-2.6%, P：0.2-0.5%, Ca：3.6-4.5%, B：1.2-1.3%, Mo：3-
6%, Co：1.5-3.2%, Nb：0.5-0.8%, rare earth element 0.4-0.6%, remaining is Al and inevitable impurity；
The rare earth element includes following components by weight percentage：Ce：12-15%, Nd：9-11%, Gd：15-17%, Pr：
5-9%, Yb：4-6%, Sm：11-14%, remaining is La.
The technical solution that further limits of the present invention is：
Foregoing includes by mass percentage：Mg：8-11%, Mn：2-6%, Zn：7-9%, Ni：1-3%, Cu：1.3-2.1%, S:
0.1-0.2%,W:1.5-1.7%, Fe：1-2%, Sc：0.5-1.1%, Si：2.3-2.6%, P：0.2-0.5%, Ca：3.6-4.5%,
B：1.2-1.3%, Mo：3-6%, Co：1.5-3.2%, Nb：0.5-0.8%, rare earth element 0.4-0.6%, remaining is Al and can not
Avoid impurity；
Rare earth element includes following components by weight percentage：Ce：12-15%, Nd：9-11%, Gd：15-17%, Pr：5-9%,
Yb：4-6%, Sm：11-14%, remaining is La.
Foregoing includes by mass percentage：Mg：8-11%, Mn：2-6%, Zn：7-9%, Ni：1-3%, Cu：1.3-
2.1%, S:0.1-0.2%,W:1.5-1.7%, Fe：1-2%, Sc：0.5-1.1%, Si：2.3-2.6%, P：0.2-0.5%, Ca：
3.6-4.5%, B：1.2-1.3%, Mo：3-6%, Co：1.5-3.2%, Nb：0.5-0.8%, rare earth element 0.4-0.6%, remaining is
Al and inevitable impurity；
Rare earth element includes following components by weight percentage：Ce：12-15%, Nd：9-11%, Gd：15-17%, Pr：5-9%,
Yb：4-6%, Sm：11-14%, remaining is La.
The preparation method of foregoing high intensity corrosion aluminium alloy conveying screw rod specifically includes melting, initial refining, at vacuum
Reason, double refining, casting, heat treatment, surface treatment spray anti-corrosion layer.
The temperature of foregoing casting is 980-1080 DEG C, time 20-25s.
Foregoing heat treatment includes heat stepwise-quenching-cooling-tempering, and the temperature of wherein heat stepwise is respectively
180-240 DEG C, 300-400 DEG C, 550-620 DEG C；The temperature of quenching is 600-650 DEG C, time 1-1.5h, and cooling is using air-cooled
It is cooled down with the mode of oil cooling, first air-cooled to 280-350 DEG C, then oil cooling is to 100-150 DEG C；The temperature of tempering is 350-440
DEG C, time 1-2h.
Foregoing surface treatment to be polished using sand paper aluminium alloy screw surface, then with acetone to polishing after
Surface carries out cleaning 3-5min, then naturally dry, and sandblasting roughening treatment, sandblasting are carried out to the surface of aluminium alloy screw rod after drying
Injection processing is carried out to aluminium alloy screw rod block with compressed air afterwards, then uses the surface of acetone cleaning aluminum alloy screw rod again, from
95-98 DEG C is heated to after so drying, and keeps the temperature 5-10min.
Foregoing spraying anti-corrosion layer of stating is specially：First aluminium alloy screw surface after the heating sprays a layer binder,
Then corrosion resistant coating is sprayed, spraying flow is 100-120ml/10s, and spraying number of turns control is enclosed in 20-25, and spray angle is
40-60 °, spray pressure is controlled in 0.4-0.5MPa, spray distance 10-20cm.
The beneficial effects of the invention are as follows：It adds in copper and makes it have corrosion-resistant effect, alloy is improved by elements such as Ce, Y, Pr
Normal, low-temperature flexibility, breaking property, improve the fastness of heater and weldment；Rare earth element is added because having uniqueness
Configuration of extra-nuclear electron, it can improve tissue in metallurgical process, improve the room temperature and high-temperature behavior of alloy, enhance alloy corrosion resistant
Corrosion, the present invention are so reduced impurity, are improved the quality of screw rod using refining slagging-off twice；The present invention is added by segmentation
Heat-quenching-cooling-tempering heat treatment, further enhances contact fatigue strength and impact flexibility, by cooling treatment, workpiece
Performance it is more preferable, more stable；Surface treatment is increased the contact surface between coating and matrix, is increased coating using sandblasting roughening treatment
With the mechanical snap power of matrix, the surface that purified treatment is crossed is made more to activate, to improve the bond strength of coating and matrix, together
When, the roughening of substrate surface also changes the residual stress distribution in coating, and the bond strength for improving coating is also advantageous, into
Row heating can eliminate the moisture and moisture of specimen surface, improve interface when spraying particle is contacted with aluminium alloy screw surface
Temperature reduces the coating cracking caused by stress caused by the thermal dilation difference of aluminium alloy screw rod and coating material, so as to improve
The bond strength of coating and aluminium alloy screw rod；Valve of the present invention have it is corrosion-resistant, high temperature resistant is good, processing performance is excellent, long lifespan and
The advantages that higher tensile strength, it disclosure satisfy that the demand in market.
Specific embodiment
Embodiment 1
The present embodiment provides a kind of high intensity to corrode aluminium alloy conveying screw rod, includes by mass percentage：Mg：8-11%, Mn：
2-6%, Zn：7-9%, Ni：1-3%, Cu：1.3-2.1%, S:0.1-0.2%,W:1.5-1.7%, Fe：1-2%, Sc：0.5-1.1%,
Si：2.3-2.6%, P：0.2-0.5%, Ca：3.6-4.5%, B：1.2-1.3%, Mo：3-6%, Co：1.5-3.2%, Nb：0.5-
0.8%, rare earth element 0.4-0.6%, remaining is Al and inevitable impurity；
Rare earth element includes following components by weight percentage：Ce：12-15%, Nd：9-11%, Gd：15-17%, Pr：5-9%,
Yb：4-6%, Sm：11-14%, remaining is La.
The present embodiment provides a kind of preparation methods of high intensity corrosion aluminium alloy conveying screw rod, specifically include melting, once
Refining, application of vacuum, double refining, casting, heat treatment, surface treatment spray anti-corrosion layer；
The temperature wherein cast is 1000 DEG C, time 23s；
Heat treatment includes heat stepwise-quenching-cooling-tempering, and the temperature of wherein heat stepwise is respectively 220 DEG C, 360 DEG C,
580℃；The temperature of quenching is 630 DEG C, time 1.2h, and cooling is cooled down by the way of air-cooled and oil cooling, and elder generation is air-cooled extremely
300 DEG C, then oil cooling is to 130 DEG C；The temperature of tempering is 400 DEG C, time 1.5h；
It is surface-treated to be polished using sand paper aluminium alloy screw surface, then the surface after polishing is carried out clearly with acetone
3min is washed, then naturally dry, sandblasting roughening treatment is carried out to the surface of aluminium alloy screw rod after drying, compressed air is used after sandblasting
Injection processing is carried out to aluminium alloy screw rod block, the surface of acetone cleaning aluminum alloy screw rod is then used again, is heated after naturally dry
To 95 DEG C, and keep the temperature 7min；
Spraying anti-corrosion layer is specially：First aluminium alloy screw surface after the heating sprays a layer binder, then sprays corrosion resistant
Coating is lost, spraying flow is 100ml/10s, and for the control of the spraying number of turns in 22 circles, spray angle is 45 °, and spray pressure control exists
0.4MPa, spray distance 15cm.
Embodiment 2
The present embodiment provides a kind of high intensity to corrode aluminium alloy conveying screw rod, includes by mass percentage：Mg：8-11%, Mn：
2-6%, Zn：7-9%, Ni：1-3%, Cu：1.3-2.1%, S:0.1-0.2%,W:1.5-1.7%, Fe：1-2%, Sc：0.5-1.1%,
Si：2.3-2.6%, P：0.2-0.5%, Ca：3.6-4.5%, B：1.2-1.3%, Mo：3-6%, Co：1.5-3.2%, Nb：0.5-
0.8%, rare earth element 0.4-0.6%, remaining is Al and inevitable impurity；
Rare earth element includes following components by weight percentage：Ce：12-15%, Nd：9-11%, Gd：15-17%, Pr：5-9%,
Yb：4-6%, Sm：11-14%, remaining is La.
The present embodiment provides a kind of preparation methods of high intensity corrosion aluminium alloy conveying screw rod, specifically include melting, once
Refining, application of vacuum, double refining, casting, heat treatment, surface treatment spray anti-corrosion layer；
The temperature wherein cast is 1030 DEG C, time 20s；
Heat treatment includes heat stepwise-quenching-cooling-tempering, and the temperature of wherein heat stepwise is respectively 230 DEG C, 400 DEG C,
610℃；The temperature of quenching is 640 DEG C, time 1h, and cooling is cooled down by the way of air-cooled and oil cooling, first air-cooled to 300
DEG C, then oil cooling is to 110 DEG C；The temperature of tempering is 430 DEG C, time 1h；
It is surface-treated to be polished using sand paper aluminium alloy screw surface, then the surface after polishing is carried out clearly with acetone
5min is washed, then naturally dry, sandblasting roughening treatment is carried out to the surface of aluminium alloy screw rod after drying, compressed air is used after sandblasting
Injection processing is carried out to aluminium alloy screw rod block, the surface of acetone cleaning aluminum alloy screw rod is then used again, is heated after naturally dry
To 96 DEG C, and keep the temperature 5min；
Spraying anti-corrosion layer is specially：First aluminium alloy screw surface after the heating sprays a layer binder, then sprays corrosion resistant
Coating is lost, spraying flow is 120ml/10s, and for the control of the spraying number of turns in 20 circles, spray angle is 50 °, and spray pressure control exists
0.45MPa, spray distance 13cm.
In addition to the implementation, the present invention can also have other embodiment.It is all to use equivalent substitution or equivalent transformation shape
Into technical solution, all fall within the present invention claims protection domain.
Claims (8)
1. a kind of high intensity corrodes aluminium alloy conveying screw rod, which is characterized in that includes by mass percentage：Mg：8-11%, Mn：
2-6%, Zn：7-9%, Ni：1-3%, Cu：1.3-2.1%, S:0.1-0.2%,W:1.5-1.7%, Fe：1-2%, Sc：0.5-1.1%,
Si：2.3-2.6%, P：0.2-0.5%, Ca：3.6-4.5%, B：1.2-1.3%, Mo：3-6%, Co：1.5-3.2%, Nb：0.5-
0.8%, rare earth element 0.4-0.6%, remaining is Al and inevitable impurity；
The rare earth element includes following components by weight percentage：Ce：12-15%, Nd：9-11%, Gd：15-17%, Pr：
5-9%, Yb：4-6%, Sm：11-14%, remaining is La.
2. high intensity according to claim 1 corrodes aluminium alloy conveying screw rod, which is characterized in that wraps by mass percentage
It includes：Mg：8-11%, Mn：2-6%, Zn：7-9%, Ni：1-3%, Cu：1.3-2.1%, S:0.1-0.2%,W:1.5-1.7%, Fe：1-
2%, Sc：0.5-1.1%, Si：2.3-2.6%, P：0.2-0.5%, Ca：3.6-4.5%, B：1.2-1.3%, Mo：3-6%, Co：
1.5-3.2%, Nb：0.5-0.8%, rare earth element 0.4-0.6%, remaining is Al and inevitable impurity；
The rare earth element includes following components by weight percentage：Ce：12-15%, Nd：9-11%, Gd：15-17%, Pr：
5-9%, Yb：4-6%, Sm：11-14%, remaining is La.
3. high intensity according to claim 1 corrodes aluminium alloy conveying screw rod, which is characterized in that wraps by mass percentage
It includes：Mg：8-11%, Mn：2-6%, Zn：7-9%, Ni：1-3%, Cu：1.3-2.1%, S:0.1-0.2%,W:1.5-1.7%, Fe：1-
2%, Sc：0.5-1.1%, Si：2.3-2.6%, P：0.2-0.5%, Ca：3.6-4.5%, B：1.2-1.3%, Mo：3-6%, Co：
1.5-3.2%, Nb：0.5-0.8%, rare earth element 0.4-0.6%, remaining is Al and inevitable impurity；
The rare earth element includes following components by weight percentage：Ce：12-15%, Nd：9-11%, Gd：15-17%, Pr：
5-9%, Yb：4-6%, Sm：11-14%, remaining is La.
4. according to the preparation method of the arbitrary high intensity corrosion aluminium alloy conveying screw rods of claim 1-3, which is characterized in that
Melting, initial refining, application of vacuum, double refining, casting, heat treatment are specifically included, is surface-treated, sprays anti-corrosion layer.
5. according to the preparation method of the arbitrary high intensity corrosion aluminium alloy screw rod of claim 4, which is characterized in that described to pour
The temperature of casting is 980-1080 DEG C, time 20-25s.
6. according to the preparation method of the arbitrary high intensity corrosion aluminium alloy screw rod of claim 4, which is characterized in that the heat
Processing includes heat stepwise-quenching-cooling-tempering, and the temperature of wherein heat stepwise is respectively 180-240 DEG C, 300-400
DEG C, 550-620 DEG C；The temperature of quenching is 600-650 DEG C, time 1-1.5h, and cooling is carried out by the way of air-cooled and oil cooling
Cooling, first air-cooled to 280-350 DEG C, then oil cooling is to 100-150 DEG C；The temperature of tempering is 350-440 DEG C, time 1-2h.
7. according to the preparation method of the arbitrary high intensity corrosion aluminium alloy screw rod of claim 4, which is characterized in that the table
Then surface treatment carries out cleaning 3- with acetone to polish using sand paper aluminium alloy screw surface to the surface after polishing
5min, then naturally dry, carries out sandblasting roughening treatment, with compressed air pair after sandblasting after drying to the surface of aluminium alloy screw rod
Aluminium alloy screw rod block carries out injection processing, then uses the surface of acetone cleaning aluminum alloy screw rod again, is heated to after naturally dry
95-98 DEG C, and keep the temperature 5-10min.
8. according to the preparation method of the arbitrary high intensity corrosion aluminium alloy screw rod of claim 4, which is characterized in that the spray
Applying anti-corrosion layer is specially：First aluminium alloy screw surface after the heating sprays a layer binder, then sprays corrosion resistant coating,
It is 100-120ml/10s that it, which sprays flow, and spraying number of turns control is enclosed in 20-25, and spray angle is 40-60 °, spray pressure control
In 0.4-0.5MPa, spray distance 10-20cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711356795.XA CN108060335A (en) | 2017-12-16 | 2017-12-16 | A kind of high intensity corrodes aluminium alloy conveying screw rod |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711356795.XA CN108060335A (en) | 2017-12-16 | 2017-12-16 | A kind of high intensity corrodes aluminium alloy conveying screw rod |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112251654A (en) * | 2020-10-30 | 2021-01-22 | 辽宁忠旺集团有限公司 | High-strength aluminum material for screw and preparation method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104651679A (en) * | 2015-02-16 | 2015-05-27 | 山东滨州华创金属有限公司 | Insoluble metal-reinforced aluminum alloy material for piston |
| CN107267822A (en) * | 2017-06-03 | 2017-10-20 | 合肥伊只门窗有限公司 | A kind of anticorrosion aluminium door and window and its preparation technology |
-
2017
- 2017-12-16 CN CN201711356795.XA patent/CN108060335A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104651679A (en) * | 2015-02-16 | 2015-05-27 | 山东滨州华创金属有限公司 | Insoluble metal-reinforced aluminum alloy material for piston |
| CN107267822A (en) * | 2017-06-03 | 2017-10-20 | 合肥伊只门窗有限公司 | A kind of anticorrosion aluminium door and window and its preparation technology |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112251654A (en) * | 2020-10-30 | 2021-01-22 | 辽宁忠旺集团有限公司 | High-strength aluminum material for screw and preparation method |
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