CN102102640A - Cast iron electromechanical annular cover and preparation method thereof - Google Patents
Cast iron electromechanical annular cover and preparation method thereof Download PDFInfo
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- CN102102640A CN102102640A CN2011100034269A CN201110003426A CN102102640A CN 102102640 A CN102102640 A CN 102102640A CN 2011100034269 A CN2011100034269 A CN 2011100034269A CN 201110003426 A CN201110003426 A CN 201110003426A CN 102102640 A CN102102640 A CN 102102640A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention discloses a cast iron electromechanical annular cover. The cast iron electromechanical annular cover is formed by casting the following raw materials in percentage by mass: 100 percent of waste iron, more than or equal to 1.3 percent of titanium, more than or equal to 1.0 percent of nickel, 2.0 to 2.5 percent of silicon, 2.0 to 2.5 percent of magnesium and less than 4 percent of carbon. A preparation method of the cast iron electromechanical annular cover comprises the following steps of: placing a pattern in a sand box; filling casting sand in the sand box; tamping the casting sand by using a tamping machine; performing casting after lifting of the pattern; heating the waste iron, coke, the titanium, the nickel, the silicon and the manganese in a heating furnace to melt the waste iron, the coke, the titanium, the nickel, the silicon and the manganese, wherein the tapping temperature of molten iron is between 1,500 and 1,550 DEG C; performing casting when the temperature of the molten iron decreases to 1,350 DEG C and keeping the casting temperature at 1,300 to 1,350 DEG C; opening the sand box in 45 to 60 minutes after the molten iron is cast and removing a tool and the sand outside a cast to expose the cast in the air; removing a casting head after the cast is fully cooled; and machining according to a design size. The cast has the same strength, hardness and tensile strength as carbon steel, and has the advantages of light weight, corrosion resistance, short product processing cycle and low cost.
Description
Technical field the present invention relates to a kind of accessory of wind-driven generator.
The dynamo-electric fan that covers with wind-driven generator that encircles of background technique all is located at the blower tray top, and require dynamo-electric ring to cover not only wall approaches, body is light for this reason, and enough intensity will be arranged.For satisfying above-mentioned requirements, the electromechanics ring cover of wind-driven generator all adopts carbon steel board to be welded at present.Its deficiency is: 1, corrosion resistance is poor, need frequently to change, and the operation of changing it is the very something of trouble.2, processing cost height.3, the process-cycle is long.
Summary of the invention the object of the present invention is to provide dynamo-electric ring cover of a kind of cast iron in light weight, corrosion-resistant, that the process-cycle is short, cost is low and preparation method thereof.
One, dynamo-electric ring cover of the present invention is to adopt the raw material casting of following weight ratio to form: i.e. scrap iron 100, titanium 〉=1.3, nickel 〉=1.0, silicon 2.0-2.5, manganese 2.0-2.5 and carbon＜4.
Two, preparation method of the present invention is as follows:
1, the making of new foundry sand: get 75-90 order sea sand, adding weight ratio is the 3%-5% bentonite clay, and adding weight ratio again is 3%-4% water, stirs, and places and uses in one day again.Old sand is reusable.
2, molding modeling: the method for making sand mold is routinely made sand mold, is about to model (die model or resin type) and places sandbox, fills foundry sand then in sandbox, and with tamper foundry sand is made firm by ramming, and preferably the surge pressure of tamper is the 6-8 kilogram.Can cast behind the withdrawing pattern.
3, melt scrap iron and casting: scrap iron, coke and titanium, nickel, silicon and manganese are placed in the oven, heating makes it fusing, 1500-1550 ℃ of molten iron tapping temperature, when molten iron temperature is reduced to 1350 ℃, begin to pour into a mould, and pouring temperature maintains 1300-1350 ℃.
4, knockout (sanding case): molten iron pours the back and promptly opened sandbox in 45-60 minute, removes foundry goods outer frock and sand, and foundry goods is exposed in air.
5, reprocessing: treat that foundry goods cools off the back fully and removes cutting-off gate, carry out machining by design size.
The present invention compared with prior art has following advantage:
1, foundry goods has just solidified and has just carried out air cooling, and hardness and intensity obviously improve, hardness 190-210, and intensity 200-300, tension degree 10 can replace carbon steel fully; And foundry goods itself is corrosion-resistant again, long service life.
2, the foundry goods wall is thin, and thickness only is 8mm, and weight is almost suitable with carbon-steel parts.
3, processing cost is low, only is the 1/3-1/2 of steel structure weldment processing cost.
4, the process-cycle short, only be 1/5 of steel structure weldment process time.
5, do not contain lead powder or plumbago and magnesium powder in the foundry sand, reduced the pollution of working environment.
6, the used foundry sand cost of the present invention is well below the resin sand cost.
Embodiment
Example 1
Get 1000kg75-90 order sea sand, add the 30kg bentonite clay, add 30kg water again, stir, placed one day.Electromechanics ring cover resin type is placed sandbox, in sandbox, fill above-mentioned foundry sand then, and be that 7 kilograms tamper is made firm by ramming foundry sand, can cast behind the withdrawing pattern with surge pressure.Get scrap iron 100kg, titanium 1.3kg, nickel 1.2kg, silicon 2.0kg, manganese 2.5kg and carbon 3.8kg, place in the oven, heating, make it fusing, 1500 ℃ of molten iron tapping temperatures begin to pour into a mould when molten iron temperature is reduced to 1350 ℃, and pouring temperature maintains 1300-1350 ℃.Molten iron pours promptly opened sandbox in back 45 minutes, removed foundry goods outer frock and sand, and foundry goods is exposed in air.After treating that foundry goods cools off fully, remove cutting-off gate, carry out machining by design size.
Example 2
Get 1000kg75-90 order sea sand, add the 50kg bentonite clay, add 40kg water again, stir, placed one day.Electromechanics ring cover die model is placed sandbox, in sandbox, fill above-mentioned foundry sand then, and be that 6 kilograms tamper is made firm by ramming foundry sand, can cast behind the withdrawing pattern with surge pressure.Get scrap iron 100kg, titanium 1.5kg, nickel 1.0kg, silicon 2.5kg, manganese 2.0kg and carbon 3.5gkg, place in the oven, heating, make it fusing, 1530 ℃ of molten iron tapping temperatures begin to pour into a mould when molten iron temperature is reduced to 1350 ℃, and pouring temperature maintains 1300-1350 ℃.Molten iron pours promptly opened sandbox in back 50 minutes, removed foundry goods outer frock and sand, and foundry goods is exposed in air.After treating that foundry goods cools off fully, remove cutting-off gate, carry out machining by design size.
Example 3
Electromechanics ring cover die model is placed sandbox, in sandbox, fill the above-mentioned foundry sand of using then, and be that 8 kilograms tamper is made firm by ramming foundry sand, can cast behind the withdrawing pattern with surge pressure.Get scrap iron 100kg, titanium 1.32kg, nickel 1.1kg, silicon 2.3kg, manganese 2.2kg and carbon 3.0kg, place in the oven, heating, make it fusing, 1550 ℃ of molten iron tapping temperatures begin to pour into a mould when molten iron temperature is reduced to 1350 ℃, and pouring temperature maintains 1300-1350 ℃.Molten iron pours promptly opened sandbox in back 60 minutes, removed foundry goods outer frock and sand, and foundry goods is exposed in air.After treating that foundry goods cools off fully, remove cutting-off gate, carry out machining by design size.
Claims (4)
1. the dynamo-electric ring cover of a cast iron, it is characterized in that: it is to adopt the raw material casting of following weight ratio to form: i.e. scrap iron 100, titanium 〉=1.3, nickel 〉=1.0, silicon 2.0-2.5, manganese 2.0-2.5 and carbon＜4.
2. the described cast iron electromechanics of claim 1 encircles the preparation method of cover, it is characterized in that:
(1) model is placed sandbox, in sandbox, fill foundry sand then, and foundry sand is made firm by ramming, can cast behind the withdrawing pattern with tamper;
(2) scrap iron, coke and titanium, nickel, silicon and manganese are placed in the oven, heating makes it fusing, and 1500-1550 ℃ of molten iron tapping temperature begins to pour into a mould when molten iron temperature is reduced to 1350 ℃, and pouring temperature maintains 1300-1350 ℃;
(3) molten iron pours the back and promptly opened sandbox in 45-60 minute, removes foundry goods outer frock and sand, and foundry goods is exposed in air;
(4) treat that foundry goods cools off fully after, remove cutting-off gate, carry out machining by design size.
3. the preparation method of the dynamo-electric ring cover of cast iron according to claim 2 is characterized in that: the making of new foundry sand: get 75-90 order sea sand, adding weight ratio is the 3%-5% bentonite clay, and adding weight ratio again is 3%-4% water, stirs, and places and uses in one day again.
4. the preparation method of the dynamo-electric ring cover of cast iron according to claim 2, it is characterized in that: the surge pressure of foundry sand tamper is the 6-8 kilogram.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100034269A CN102102640B (en) | 2011-01-04 | 2011-01-04 | Cast iron electromechanical annular cover and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100034269A CN102102640B (en) | 2011-01-04 | 2011-01-04 | Cast iron electromechanical annular cover and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102102640A true CN102102640A (en) | 2011-06-22 |
| CN102102640B CN102102640B (en) | 2012-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100034269A Expired - Fee Related CN102102640B (en) | 2011-01-04 | 2011-01-04 | Cast iron electromechanical annular cover and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1297151A (en) * | 1969-09-10 | 1972-11-22 | ||
| CN101092674A (en) * | 2007-07-20 | 2007-12-26 | 山东滨州渤海活塞股份有限公司 | Nitrogen contained austenitic cast iron in use for beset ring of piston |
| CN101342575A (en) * | 2008-08-26 | 2009-01-14 | 大连市金州区天源铸造机械厂 | Manufacturing process for high-power motor pig machine base |
-
2011
- 2011-01-04 CN CN2011100034269A patent/CN102102640B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1297151A (en) * | 1969-09-10 | 1972-11-22 | ||
| CN101092674A (en) * | 2007-07-20 | 2007-12-26 | 山东滨州渤海活塞股份有限公司 | Nitrogen contained austenitic cast iron in use for beset ring of piston |
| CN101342575A (en) * | 2008-08-26 | 2009-01-14 | 大连市金州区天源铸造机械厂 | Manufacturing process for high-power motor pig machine base |
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| CN102102640B (en) | 2012-10-31 |
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Granted publication date: 20121031 Termination date: 20160104 |
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