CN87102516A - Filter of purifying magnesium oxide foam pottery and reparation technology thereof - Google Patents
Filter of purifying magnesium oxide foam pottery and reparation technology thereof Download PDFInfo
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- CN87102516A CN87102516A CN87102516.7A CN87102516A CN87102516A CN 87102516 A CN87102516 A CN 87102516A CN 87102516 A CN87102516 A CN 87102516A CN 87102516 A CN87102516 A CN 87102516A
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- strainer
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- magnesium oxide
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Abstract
The present invention relates to a kind of alloy liquid filter purifying and reparation technology thereof of being used for.Strainer of the present invention has solved the obstructed filtration magnesium alloy of prior art strainer and has contained the technical barrier of the superalloy of active element.Strainer of the present invention is to be raw material with pure zirconia magnesium, is binding agent with phenolic varnish, and its proportioning is 1: 0.2～0.5, and both make slurries, dip-coating on porous plastics, drying, oven dry, high temperature sintering forms.
The effect of filter cleaning alloy liquid of the present invention is remarkable, has tangible economic benefit.
Description
The present invention relates to a kind of strainer that alloy liquid purifies usefulness that is used for.
As everyone knows, in Metal smelting,, often adopt strainer to filter alloy liquid for obtaining the purified alloy liquid of quality.The current strainer that adopts both at home and abroad extensively all with material such as aluminum oxide, quartz, zirconium white and inorganic bond squeeze be modulated into slurries with the appropriate means dip-coating on porous plastics through heating, drying, sinter-hardened and make strainer.
This strainer can filter general aluminium alloy, copper alloy, cast iron, cast steel etc.
For example: the strainer that U.S. Astro Met Associates company and Fosece company produce.Referring to United State Patent 4,024,212 patent documentations.
But this class strainer all is higher than magnesium oxide because of free energy of formation quartzy, aluminum oxide, so when alloy liquid filters, following reaction will take place:
And make the strainer dissolving, thus lose cleaning action, also caused the pollution of alloy liquid simultaneously.As a same reason, owing to contain active element, also analogue can take place to some superalloy, for example hafnium etc.
Thereby making general aluminum oxide-quartzy class A foam A porcelain filter, the application in the purification techniques of magnesium alloy and some superalloys is subjected to certain limitation.
Seek a kind ofly not only to be applicable to general alloy liquid, and can be applicable to that the strainer that ideal that magnesium alloy and some contain the superalloy liquid of active element purifies usefulness is a purpose of the present invention.
The present invention has on the make selected for use pure zirconia magnesium to replace aluminum oxide-quartzy class material, and replaces mineral binder bond and make slurries with phenolic varnish.Adopt certain dipping process with the slurries dip-coating on porous plastics, drying sclerosis, sintering forms.
Strainer of the present invention has better chemical stability than aluminum oxide-quartzy class A foam A porcelain filter commonly used.Use this strainer, both can avoid in magnesium alloy, dissolving, also can not pollute the superalloy liquid that contains active element.
Adopting phenolic varnish to make binding agent can avoid when cleaning high-temp alloy liquid because of can not high temperature resistantly losing efficacy.
Therefore, adopt strainer of the present invention can improve the depuration quality of alloy liquid.It is the desirable strainer that is used to filter magnesium alloy and superalloy.
For example: be not more than the chemical pure magnesium oxide powder of 200 purposes through maturation process with granularity, the ratio that adds 20～50 gram phenolic varnish in 100 gram powders is made into uniform sizing material.With porosity is 10～20 holes/inch, polyurethane foam plastic with suitable size of favorable elasticity immerses in the slurries through repeatedly kneadding, discharges the gas in the plastic body, treat that it soaks into fully after, extrude unnecessary slurries, make on the foams fiber yarn evenly coated one deck slurry and do not have the hole of obstruction phenomenon.Seasoning 24～48 hours 80 ℃ of bakings 2 hours, after the sclerosis to be dried, is put into stove.Be warming up to 300 ℃ of insulations 1 hour, and then be rapidly heated, be incubated 1 hour, furnace cooling to 1300～1800 ℃.Can obtain filter of purifying magnesium oxide foam pottery.
Claims (5)
1, a kind of ceramic foam filter that is used for the purification of alloy liquid, feature of the present invention is that strainer constitutes the show bubble structure by pure zirconia magnesium.
2, a kind of reparation technology of filter of purifying magnesium oxide foam pottery, feature of the present invention is:
A. make raw material with pure zirconia magnesium, phenolic varnish are made into slurry as binding agent,
B. make the carrier of above-mentioned slurries with polyurethane foam plastic,
C. through seasoning, oven dry, high temperature sintering forms.
3, the reparation technology of strainer according to claim 2 is characterized in that, the proportioning of magnesium oxide and phenolic varnish is 1: 0.2～0.50.
4, reparation technology according to claim 2 is characterized in that, the porosity of used polyurethane foam plastic is 10～20 holes/inch.
5, reparation technology according to claim 2 is characterized in that, the high temperature sintering temperature is 1300～1800 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87102516 CN1011306B (en) | 1987-04-01 | 1987-04-01 | Filter of purifying magnesium oxide foam pottery and process for making same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87102516 CN1011306B (en) | 1987-04-01 | 1987-04-01 | Filter of purifying magnesium oxide foam pottery and process for making same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN87102516A true CN87102516A (en) | 1988-11-23 |
| CN1011306B CN1011306B (en) | 1991-01-23 |
Family
ID=4813993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87102516 Expired CN1011306B (en) | 1987-04-01 | 1987-04-01 | Filter of purifying magnesium oxide foam pottery and process for making same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1011306B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1063411C (en) * | 1996-10-30 | 2001-03-21 | 大连理工大学 | Method of preparing (ALxOx+Tibx) foamed ceramic filter by self-overgrowth high-temp. synthesis control |
| CN1063410C (en) * | 1996-10-30 | 2001-03-21 | 大连理工大学 | Method of preparing foamed ceramic material by self-overgrowth high-temp. synthesis control |
| CN102031384A (en) * | 2010-11-19 | 2011-04-27 | 江苏大学 | Method for purifying magnesium alloy melt |
| US11358081B2 (en) | 2018-04-08 | 2022-06-14 | Jiangsu Zhongyi Automobile New Material Technology Co., Ltd. | Spinel-reinforced magnesium oxide-based foam ceramic filter and preparation method therefor |
| US11529577B2 (en) | 2018-04-08 | 2022-12-20 | Fengyang Aiersi Light Alloy Precision Molding Co., Ltd. | Ma-M2T spinel solid solution enhanced magnesium oxide-based ceramic foam filter and preparation method therefor |
| US11702366B2 (en) | 2018-04-08 | 2023-07-18 | Jiangsu Zhongyi Automobile New Material Technology Co., Ltd. | Magnesium aluminate spinel reinforced magnesium oxide-based foam ceramic filter synthesized in situ from magnesium oxide whisker, and preparation method therefor |
-
1987
- 1987-04-01 CN CN 87102516 patent/CN1011306B/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1063411C (en) * | 1996-10-30 | 2001-03-21 | 大连理工大学 | Method of preparing (ALxOx+Tibx) foamed ceramic filter by self-overgrowth high-temp. synthesis control |
| CN1063410C (en) * | 1996-10-30 | 2001-03-21 | 大连理工大学 | Method of preparing foamed ceramic material by self-overgrowth high-temp. synthesis control |
| CN102031384A (en) * | 2010-11-19 | 2011-04-27 | 江苏大学 | Method for purifying magnesium alloy melt |
| CN102031384B (en) * | 2010-11-19 | 2012-08-29 | 江苏大学 | Method for purifying magnesium alloy melt |
| US11358081B2 (en) | 2018-04-08 | 2022-06-14 | Jiangsu Zhongyi Automobile New Material Technology Co., Ltd. | Spinel-reinforced magnesium oxide-based foam ceramic filter and preparation method therefor |
| US11529577B2 (en) | 2018-04-08 | 2022-12-20 | Fengyang Aiersi Light Alloy Precision Molding Co., Ltd. | Ma-M2T spinel solid solution enhanced magnesium oxide-based ceramic foam filter and preparation method therefor |
| US11702366B2 (en) | 2018-04-08 | 2023-07-18 | Jiangsu Zhongyi Automobile New Material Technology Co., Ltd. | Magnesium aluminate spinel reinforced magnesium oxide-based foam ceramic filter synthesized in situ from magnesium oxide whisker, and preparation method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1011306B (en) | 1991-01-23 |
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| C19 | Lapse of patent right due to non-payment of the annual fee |