CN1081720A - Aluminium alloy iron-phase nodulizer - Google Patents
Aluminium alloy iron-phase nodulizer Download PDFInfo
- Publication number
- CN1081720A CN1081720A CN 92106636 CN92106636A CN1081720A CN 1081720 A CN1081720 A CN 1081720A CN 92106636 CN92106636 CN 92106636 CN 92106636 A CN92106636 A CN 92106636A CN 1081720 A CN1081720 A CN 1081720A
- Authority
- CN
- China
- Prior art keywords
- iron
- aluminium alloy
- phase
- alloy
- needle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
Aluminium alloy iron-phase nodulizer of the present invention is the group's spheroidizing that is used for aluminium base casting alloy needle-like iron phases such as Al-Ca, Al-Si, Al-Zn.This nodulizing agent can be under common aluminium alloy smelting condition, and it is spherical that the needle-like iron phase is become, and has characteristics such as nodularization speed is fast, effect stability, and long-lasting is good.When iron content in the aluminum silicon alloy was 1～1.2%, after the spheroidizing, tensile strength improved 22%, and unit elongation improves 40%.Adopt this nodulizing agent, can eliminate the deleterious effect of iron in the aluminium alloy, kept the beneficial effect of iron again, this not only convenient production, and improve the mechanical property of aluminium alloy, can significantly improve the yield rate of cast aluminium alloy.
Description
The present invention relates to group's spheroidizing of needle-like iron phase in the aluminium base casting alloys such as calendering aluminium alloy and Al-Si, Al-Cu, Al-Zn, is specially adapted to the spheroidizing of needle-like iron phase in the cast pistons alloy.
It has been generally acknowledged that iron is the impurity element in the cast aluminium alloy, in casting Al-Si alloy, Fe often exists with β phase (AlSiFe), and this phase character is hard and crisp, often passes α (Al) crystal grain with thick needle-like, the mechanical property of matrix, particularly unit elongation and impact value etc. have been weakened greatly.And because the increase of iron amount causes the liquid metal property reduction of flowing in the alloy, shrinkage descends, the increase of casting wasted product rate.
Needle-like iron phase in the existing elimination aluminium alloy or alleviate the deleterious effect of needle-like iron phase, summary is got up, and mainly contains following several; Add alloying element, change iron phase crystalline structure and crystal habit.As add elements such as Mn, Co, Cr, Mo, and with (Mn+Cr) (Mo+S), composite alloying such as (Mn+Mo) eliminates the needle-like iron phase; Improve speed of cooling, suppress the needle-like iron phase and separate out or its size of refinement; The liquid processing removed ferro element or eliminated non-spontaneous nucleation from melt.In above-mentioned three kinds of methods, utilize raising cooling rate and liquid the processing that very big limitation is arranged in actual production, often be difficult to realize.With the method for adding alloying elements such as Mn, Co, though the needle-like iron phase of aluminium alloy can be become dendroid or flower shape, it is spherical to make it to become group, and because the Mn amount is high, makes and form thick degradation property phase (FeMn) Al in the alloy
6, reduce mechanical property, cause the segregation defective.In addition, element costs such as Co are higher, are difficult to extensively promote the use of.
The objective of the invention is to develop a kind of aluminium alloy needle-like iron-phase nodulizer.It is spherical that iron phase in the alloy is become by needle-like, eliminates the deleterious effect of iron, improves the aluminum alloy casting yield rate.
Aluminium alloy iron-phase nodulizer of the present invention, its composition and proportioning are respectively: Mn powder 45～60%, Mg powder 15～30%, K
2TiF
625～35%.
Potassium fluotitanate and reactive aluminum decomposite titanium, and titanium generates TiAl with reactive aluminum again
3Nucleus, its reaction formula is as follows:
The TiAl that generates
3Nucleus is as the core of the non-spontaneous nucleation of iron phase.
The effect of manganese is with the FeAl in the aluminium alloy
3, FeAl
5, Fe
2Si
2Al
9Form new compound Deng iron phase, as FeMnAl
12, FeMnAl
6Deng, so that with TiAl
3Be the core forming core.
After the magnesium powder is met aluminium liquid, produce thermopositive reaction, temperature can improve 400～600 ℃, has quickened the carrying out of above-mentioned reaction.
The KF that generates in the reaction process of potassium fluotitanate and aluminium can react with aluminium liquid: 3KF+Al==AlF again
3+ 3K.Potassium is unbound state, can be adsorbed on new iron phase compound F 17-hydroxy-corticosterone eMnAl
12, FeMnAl
6On, impel formation spherical.
This nodulizing agent can be under common aluminium alloy smelting condition, and it is spherical that the needle-like iron phase is become, and speed is fast, effect stability, and long-lasting is good.
The preparation technique of nodulizing agent of the present invention is: broken in mechanical crusher with the technical pure electrolytic manganese.With 100 order manganese powders and 100 order magnesium powder, technical pure K
2TiF
6Mechanically mixing is even, is pressed into bulk by compacting in 2: 1 ratio on pressing machine.
After aluminum or aluminum alloy is heated to 700～720 ℃, skims, the right cylinder nodulizing agent that suppresses is dropped in the aluminium liquid, left standstill 6～10 minutes, by existing process program, carry out pouring into a mould after the refining treatment again.Generally speaking, the add-on of nodulizing agent is identical with iron-holder in the alloy, but at Al-zn-mg-cu alloy, the add-on of aluminium-magnesium alloy is 80% of its iron-holder.
Use iron-phase nodulizer of the present invention, in the Al-Cu alloy, strength of alloy improves 30%, and unit elongation can improve 116%, in the Al-Si alloy, when iron-holder is 1～1.2%, through the strength of alloy raising 22% of spheroidizing.Unit elongation improves about 40%.In the ZL104 alloy, when iron-holder was 1.2%, behind the adding nodulizing agent, tensile strength improved 25%, and unit elongation improves 82%.
Iron is in aluminium alloy, and from reducing the alloy unit elongation, normal temperature mechanical properties such as impact value are deleterious, but is useful from improving the alloy high-temp performance and not gluing the casting mold aspect.Therefore, the present invention changes iron phase state in the aluminium alloy, makes the nodularization of needle-like iron phase group, has both eliminated the deleterious effect of iron, has kept the beneficial effect of iron again, and this not only significantly improves the yield rate of aluminium alloy, and convenient production, improves the mechanical property of aluminium alloy.
Claims (3)
1, a kind of aluminium alloy iron-phase nodulizer that contains manganese powder is characterized in that the component of this nodulizing agent and proportioning are: Mn powder 45～60%, Mg powder 15～30%, K
2TiF
625～35%.
2, nodulizing agent according to claim 1 is characterized in that 100 order manganese powders and magnesium powder and technical pure K in the nodulizing agent
2TiF
6Mix, be pressed into bulk by compacting in 2: 1 ratio.
3, nodulizing agent according to claim 1 is characterized in that the add-on of nodulizing agent is identical with iron-holder in the aluminium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92106636 CN1081720A (en) | 1992-07-20 | 1992-07-20 | Aluminium alloy iron-phase nodulizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92106636 CN1081720A (en) | 1992-07-20 | 1992-07-20 | Aluminium alloy iron-phase nodulizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1081720A true CN1081720A (en) | 1994-02-09 |
Family
ID=4942291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92106636 Pending CN1081720A (en) | 1992-07-20 | 1992-07-20 | Aluminium alloy iron-phase nodulizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1081720A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101831670A (en) * | 2010-05-24 | 2010-09-15 | 山东滨州渤海活塞股份有限公司 | Nodulizing method of rod-shaped iron phases in pure aluminum |
| CN107400806A (en) * | 2017-06-15 | 2017-11-28 | 中北大学 | A kind of intermediate alloy to go bad for secondary aluminium Fe-riched phase and preparation method thereof |
| CN107619959A (en) * | 2017-09-25 | 2018-01-23 | 浙江工业大学 | Regenerate Al Cu Si line aluminium alloy method for removing iron |
-
1992
- 1992-07-20 CN CN 92106636 patent/CN1081720A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101831670A (en) * | 2010-05-24 | 2010-09-15 | 山东滨州渤海活塞股份有限公司 | Nodulizing method of rod-shaped iron phases in pure aluminum |
| CN107400806A (en) * | 2017-06-15 | 2017-11-28 | 中北大学 | A kind of intermediate alloy to go bad for secondary aluminium Fe-riched phase and preparation method thereof |
| CN107400806B (en) * | 2017-06-15 | 2019-04-16 | 中北大学 | A kind of intermediate alloy and preparation method thereof to go bad for secondary aluminium Fe-riched phase |
| CN107619959A (en) * | 2017-09-25 | 2018-01-23 | 浙江工业大学 | Regenerate Al Cu Si line aluminium alloy method for removing iron |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0701002A1 (en) | Process for moulding aluminium- or magnesiumalloys in semi-solidified state | |
| CN115261684B (en) | Cast Al-Si alloy and preparation method thereof | |
| CN109295351A (en) | A kind of pack alloy and its preparation method and application | |
| CN108977702A (en) | A kind of aluminium alloy and aluminium alloy castings preparation method | |
| CN101775529A (en) | High-strength cast aluminum-silicon alloy for engine body and preparation method thereof | |
| CN113174516B (en) | Scandium-containing high-strength high-toughness aluminum-silicon alloy and preparation process thereof | |
| CN113699418B (en) | High-elasticity modulus and high-plasticity aluminum-silicon casting alloy and preparation method and application thereof | |
| CN112126808B (en) | Production process of hypoeutectic aluminum-silicon alloy hub with spheroidized and refined silicon phase | |
| SK10002001A3 (en) | Hypereutectic aluminium-silicon alloy product for semisolid forming | |
| CN115961186A (en) | Die-casting aluminum alloy material and preparation method and application thereof | |
| JP2005272966A (en) | Aluminum alloy for semisolid casting and method for manufacturing casting | |
| CN1302137C (en) | Aluminium zinc magnesium series alloy and its preparation technology | |
| CN101838759A (en) | 4032 alloy alterant and use method thereof | |
| EP0559694B1 (en) | Method of preparing improved hyper-eutectic alloys and composites based thereon | |
| CN1238546C (en) | Mg-Al based magnesium alloy in high intensity and high plasticity | |
| CN112030047A (en) | Preparation method of high-hardness fine-grain rare earth aluminum alloy material | |
| CN109266886B (en) | Method for refining intermetallic compound phase of manganese-iron-containing aluminum alloy | |
| CN1081720A (en) | Aluminium alloy iron-phase nodulizer | |
| CN116254442A (en) | High-yield-strength cast Al-Si alloy and preparation method thereof | |
| JPH09272940A (en) | Hypo-eutectic aluminum-silicon die-cast alloy excellent in elongation and impact toughness | |
| JP2000008134A (en) | Modification of microstructure of mother alloy and nonferrous metal alloy and production of mother alloy | |
| CN113718144A (en) | High-plasticity high-elastic-modulus aluminum-silicon casting alloy and preparation method and application thereof | |
| JPH0681068A (en) | Method for casting heat resistant mg alloy | |
| CN115896563B (en) | High-performance gravity casting aluminum alloy material and preparation method thereof | |
| CN116287891B (en) | Heat-treatment-free die-casting aluminum alloy and preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |