CN103422013B - Preparation method of calcium-iron composite material - Google Patents
Preparation method of calcium-iron composite material Download PDFInfo
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- CN103422013B CN103422013B CN201310371030.9A CN201310371030A CN103422013B CN 103422013 B CN103422013 B CN 103422013B CN 201310371030 A CN201310371030 A CN 201310371030A CN 103422013 B CN103422013 B CN 103422013B
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Abstract
The invention relates to a preparation method of a calcium-iron composite material. The preparation method of the calcium-iron composite material comprises the following steps of (1) taking various chemical components, wherein the chemical components comprise, by weight, 37%-44% of calcium carbonate, 7%-18% of magnesium sulfate powder, 0.5%-0.8% of Zn, 0.3%-0.4% of Ti, 3.6%-5.1% of C, and the balance Fe; (2) placing the Fe, the Zn and the Ti in the step (1) into a vacuum induction furnace to carry out smelting, setting the temperature to be 1020-1040DEG C, setting the pressure to be 70-110Pa, placing the calcium carbonate powder, the magnesium sulfate powder and carbon powder after four hours, and carrying out smelting for two hours; (3) keeping the temperature to be 610DEG C-660DEG C for three hours after the mixture is sintered; (4) carrying out gradual cooling on the sintered composite material, setting the cooling rate to be 20DEG C/s, and obtaining the calcium-iron composite material after the temperature is decreased to be the room temperature. The prepared calcium-iron composite material has good corrosion resistance and high-temperature resistance.
Description
Technical field
The present invention relates to a kind of preparation method of matrix material, particularly relate to a kind of preparation method of calcium iron composite material.
Background technology
Conventional ferrous materials, after preparation completes, does not have very excellent erosion resistance usually.After touching some relevant corrosivess, certain destruction is produced to the structure of product.Such as after Long contact time acid solution, ferrous materials just has corrosion phenomenon to produce, and by changing moiety and the component proportions of ferrous materials, may improve the acid and alkali-resistance ability of irony matrix material.And then give its corresponding erosion resistance, the final correlated performance improving ferrous material.
Summary of the invention
The technical problem solved: the problem that conventional steel anticorrosion effect is very poor.
Technical scheme: the preparation method that the invention discloses a kind of calcium iron composite material, composite material and preparation method thereof step is as follows: (1) gets various chemical composition, chemical component weight per-cent is as follows: calcium carbonate is 37% ~ 44%, magnesium sulfate powder is 7% ~ 18%, Zn is 0.5% ~ 0.8%, Ti is 0.3% ~ 0.4%, C is 3.6% ~ 5.1%, and surplus is Fe;
(2) carry out melting by step (1) in Fe, Zn, Ti input vacuum induction furnace, temperature is set as 1020 ~ 1040 DEG C, pressure is drop into Paris white, magnesium sulfate powder and carbon dust again after 70 ~ 110Pa, 4h, then melting 2h;
(3) maintain the temperature at 610 DEG C ~ 660 DEG C after thing sintering to be mixed, keep 3h;
(4) lowered the temperature gradually by matrix material after sintering, rate of temperature fall is 20 DEG C/s, obtains calcium iron composite material after being cooled to room temperature.
Wherein, calcium carbonate content is preferably 37%; Smelting temperature is preferably 1040 DEG C; Melting pressure is preferably 110Pa; C content is preferably 3.6%.
Beneficial effect: the calcium iron composite material that preparation method of the present invention obtains has good corrosion resistance nature, can the NaCl solution of resistance to 10wt%, the salpeter solution of 3wt%, the potassium hydroxide solution of 15wt% soak 30 days unchanged, still maintain original characteristic and outward appearance.
Embodiment
Embodiment 1
Get various chemical composition, chemical component weight per-cent is as follows: calcium carbonate is 37%, magnesium sulfate powder is 18%, Zn is 0.5%, Ti is 0.3%, C is 5.1%, and surplus is Fe; Fe, Zn, Ti are dropped in vacuum induction furnace and carry out melting, temperature is set as 1020 DEG C, pressure is drop into Paris white, magnesium sulfate powder and carbon dust again after 100Pa, 4h, then melting 2h; Maintain the temperature at 610 DEG C after thing sintering to be mixed, keep 3h; Lowered the temperature gradually by matrix material after sintering, rate of temperature fall is 20 DEG C/s, obtains calcium iron composite material after being cooled to room temperature.
Embodiment 2
Get various chemical composition, chemical component weight per-cent is as follows: calcium carbonate is 40%, magnesium sulfate powder is 12%, Zn is 0.7%, Ti is 0.4%, C is 3.6%, and surplus is Fe; Fe, Zn, Ti are dropped in vacuum induction furnace and carry out melting, temperature is set as 1040 DEG C, pressure is drop into Paris white, magnesium sulfate powder and carbon dust again after 70Pa, 4h, then melting 2h; Keep temperature to be 660 DEG C after thing sintering to be mixed, keep 3h; Lowered the temperature gradually by matrix material after sintering, rate of temperature fall is 20 DEG C/s, obtains calcium iron composite material after being cooled to room temperature.
Embodiment 3
Get various chemical composition, chemical component weight per-cent is as follows: calcium carbonate is 44%, magnesium sulfate powder is 7%, Zn is 0.8%, Ti is 0.3%, C is 4.3%, and surplus is Fe; Fe, Zn, Ti are dropped in vacuum induction furnace and carry out melting, temperature is set as 1030 DEG C, pressure is drop into Paris white, magnesium sulfate powder and carbon dust again after 110Pa, 4h, then melting 2h; Maintain the temperature at 630 DEG C after thing sintering to be mixed, keep 3h; Lowered the temperature gradually by matrix material after sintering, rate of temperature fall is 20 DEG C/s, obtains calcium iron composite material after being cooled to room temperature.
Corrosion-resistant test result
Corrosion-resistant test has been carried out to the steel of the embodiment 1 prepared, embodiment 2, embodiment 3.The product of embodiment 1, embodiment 2, embodiment 3 is put into respectively the NaCl solution of 10wt%, in the salpeter solution of 3wt%, in the potassium hydroxide solution of 15wt%, minute is 30 days.After 30 days, the product of embodiment 1, embodiment 2, embodiment 3 does not all produce any change, has possessed good erosion resistance.
Claims (5)
1. the preparation method of a calcium iron composite material, it is characterized in that composite material and preparation method thereof step is as follows: (1) gets various chemical composition, chemical component weight per-cent is as follows: calcium carbonate is 37% ~ 44%, magnesium sulfate powder is 7% ~ 18%, Zn is 0.5% ~ 0.8%, Ti is 0.3% ~ 0.4%, C is 3.6% ~ 5.1%, and surplus is Fe; (2) carry out melting by step (1) in Fe, Zn, Ti input vacuum induction furnace, temperature is set as 1020 ~ 1040 DEG C, pressure is drop into Paris white, magnesium sulfate powder and carbon dust again after 70 ~ 110Pa, 4h, then melting 2h; (3) maintain the temperature at 610 DEG C ~ 660 DEG C after thing sintering to be mixed, keep 3h; (4) lowered the temperature gradually by matrix material after sintering, rate of temperature fall is 20 DEG C/s, obtains calcium iron composite material after being cooled to room temperature.
2. the preparation method of a kind of calcium iron composite material according to claim 1, is characterized in that calcium carbonate content is 37%.
3. the preparation method of a kind of calcium iron composite material according to claim 1, is characterized in that smelting temperature is 1040 DEG C.
4. the preparation method of a kind of calcium iron composite material according to claim 1, is characterized in that pressure is 110Pa.
5. the preparation method of a kind of calcium iron composite material according to claim 1, is characterized in that C is 3.6%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310371030.9A CN103422013B (en) | 2013-08-23 | 2013-08-23 | Preparation method of calcium-iron composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310371030.9A CN103422013B (en) | 2013-08-23 | 2013-08-23 | Preparation method of calcium-iron composite material |
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| Publication Number | Publication Date |
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| CN103422013A CN103422013A (en) | 2013-12-04 |
| CN103422013B true CN103422013B (en) | 2015-04-08 |
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| CN201310371030.9A Expired - Fee Related CN103422013B (en) | 2013-08-23 | 2013-08-23 | Preparation method of calcium-iron composite material |
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| CN107058886A (en) * | 2017-06-04 | 2017-08-18 | 游理淋 | A kind of method for improving iron base composite material mechanical property |
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| JP3386717B2 (en) * | 1998-05-26 | 2003-03-17 | 川崎製鉄株式会社 | Method for producing oriented silicon steel sheet with low hysteresis loss |
| CN1635658A (en) * | 2004-11-09 | 2005-07-06 | 施秀英 | Middle and low temperature ceramic oxide fuel cell and preparation process |
| CN101537427B (en) * | 2009-04-28 | 2012-04-04 | 江苏环立板带轧辊有限公司 | Composite roll for centrifugally casting high-chromium cast iron and a preparation method thereof |
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