CN105925825A - Preparation method for high-tenacity efficient Al-Sr intermediate alloy alterant - Google Patents
Preparation method for high-tenacity efficient Al-Sr intermediate alloy alterant Download PDFInfo
- Publication number
- CN105925825A CN105925825A CN201610343391.6A CN201610343391A CN105925825A CN 105925825 A CN105925825 A CN 105925825A CN 201610343391 A CN201610343391 A CN 201610343391A CN 105925825 A CN105925825 A CN 105925825A
- Authority
- CN
- China
- Prior art keywords
- intermediate alloy
- preparation
- efficient
- al4sr
- high tenacity
- 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
Classifications
-
- 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
- C22C1/03—Making non-ferrous alloys by melting using master alloys
-
- 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
- C22C21/00—Alloys based on aluminium
Abstract
The invention discloses a preparation method for Al-Sr intermediate alloy wire rods adopting an ultrasonic melt treatment process, additional adding of new alloy elements is not required, and the preparation method is low in cost, easy to operate and practical. Cavitation bubbles are generated in a solution during the ultrasonic melt treatment process, high energy generated by the collapse of the cavitation bubbles has the crushing effect for Al4Sr phases in the Al-Sr intermediate alloy, and the bulky primary Al4Sr phases become fine in size and diffused. In addition, ultrasonic has the effects of degassing, deslagging and purification for purifying a melt. According to a hot extrusion process, the technology of large variable deformation is adopted for refining the Al4Sr phases in the Al-Sr intermediate alloy. According to the preparation method, in the process of preparing a high-tenacity efficient Al-Sr intermediate alloy alterant, the Al4Sr phases are small in size, even in distribution and diffused; and the Al-Sr intermediate alloy alterant has high tenacity and can be rolled to be the wire rods.
Description
Technical field
The invention belongs to materials processing field, particularly relate to the preparation technology of a kind of Al-Sr intermediate alloy alterant.
Background technology
After the sixties in 20th century is found that Sr has metamorphism, Sr Metamorphism treatment has obtained swift and violent development, and at wheel hub
And have also been obtained successfully application on aluminium alloy.Owing to Sr adds scaling loss more seriously with simple substance form, so Sr is generally with Al-
Sr intermediate alloy form adds.The method producing Al-Sr intermediate alloy mainly has the method for oozing, thermal reduction and fused salt electrolysis process.
And thermal reduction and fused salt electrolysis process also rest on laboratory stage, it is impossible to apply and produce in factory mass, produce oozing method
During the scaling loss ratio of strontium more serious, casting yield is low.
At present, it is highly brittle due to common Al-Sr intermediate alloy so that it is the production difficulty of coiled material is very big, only has in the world
Very few companies has grasped the production technology of this coiled material.Domestic also do not have to produce Al-Sr intermediate alloy alterant coiled material
Enterprise and production line.The Metamorphism treatment of most domestic casting Al-Si alloy product all uses batch (-type) discontinuously to add Al-
Sr intermediate alloy block or the way of certain diameter pole stock, thus decrease in production automaticity.Therefore, traditional
On the basis of preparation Al-Sr intermediate alloy wire rod, the Al-Sr intermediate alloy wire rod using ultrasound wave melt treatment to prepare can
To improve its percentage elongation, prepare the Al-Sr intermediate alloy alterant coiled material with high tenacity, domestic aluminum processing enterprise can be made
Al-Sr alloy addition manner obtain breakthrough change, improve further the automated production degree of aluminum processing enterprise, to state
People's expanding economy is significant.
Both at home and abroad commercial type Al-Sr intermediate alloy alterant more or less all deposit the most not
Foot, particularly stage of incubation is long, the problem that effective metamorphic epoch is short.In Al-Sr intermediate alloy, Sr is generally with intermetallic compound
Presented in Al4Sr, therefore, the stability of Al4Sr phase, i.e. complexity that Sr atom separates out from Al4Sr middle reaches and expansion
Dissipate speed and its modification effect will be played the important effect of producing, and the stability of Al4Sr phase and its form, size,
The factors such as crystal structure are relevant, and therefore we can refine Al-by the preparation or processing technique that control Al-Sr intermediate alloy
The tissue morphology of the Al4Sr phase in Sr intermediate alloy.Therefore, on the basis of traditional preparation Al-Sr intermediate alloy wire rod, adopt
In the Al-Sr intermediate alloy wire rod prepared by ultrasound wave melt treatment, Al4Sr phase is tiny, disperse and being evenly distributed, and improves
The Sr atom of Al-Sr intermediate alloy alterant diffusion velocity in Al-Si alloy, reduces stage of incubation, extends it the most rotten
Time.
Summary of the invention
Goal of the invention: the present invention provides the preparation method of the efficient Al-Sr intermediate alloy alterant of a kind of high tenacity.Its mesh
Be to obtain that a kind of Al4Sr phase size is tiny, Dispersed precipitate, and the high tenacity Al-Sr intermediate alloy alterant that percentage elongation is high.
Technical scheme:
The present invention is the efficient Al-Sr intermediate alloy alterant preparation method of a kind of high tenacity, and the method includes the steps of:
(1) preparation 3.6kg commercial-purity aluminium, 0.4kg technical pure strontium；
(2) graphite crucible of 5kg capacity is dried, then the commercial-purity aluminium prepared is put into graphite crucible carry out melting, melting
Temperature is 790 DEG C, adds technical pure strontium after commercial-purity aluminium is completely melt as aluminum liquid；
(3) after technical pure strontium is completely melt, ultrasound wave melt treatment is used；
(4) stand after, stainless steel tube is inserted aluminum liquid 2/3rds depths lead to argon and slowly do surrounding motion, ventilation 2 ~
3min, is poured in the mould of preheating after standing certain time, and mould is diameter 128mm, the metal die of high 40mm, and room temperature is cold
But molding；
(5) the extruding pad preheating of needs when Al-Sr intermediate alloy ingot step (4) prepared and extruding, by horizontal extruder
Pressurizing unit preheats；
(6) using horizontal extruder to extrude the Al-Sr intermediate alloy ingot of preheating, extrusion ratio is 40:1, obtains in the middle of Al-Sr
Alloy wire.
In described step (3), use the supersonic frequency 18KHz ~ 22KHz of ultrasound wave melt treatment.
In described step (3), ultrasound wave melt treatment time 10s ~ 60s.
In described step (4), mold preheating temperature 200 DEG C ~ 300 DEG C.
In described step (5), the extruding pad preheating temperature 450 DEG C ~ 500 needed when Al-Sr intermediate alloy ingot and extruding
℃；Horizontal extruder pressurizing unit preheating temperature 300 DEG C ~ 400 DEG C.
In step (1), described technical pure strontium kerosene seals.
Advantage and effect: instant invention overcomes Al4Sr phase size in existing Al-Sr intermediate alloy alterant the thickest,
The low problem that can not be rolled into Al-Sr intermediate alloy wire rod of percentage elongation.Provide that a kind of Al4Sr phase size is little, Dispersed precipitate, and
Al-Sr intermediate alloy wire rod has high tenacity, can be rolled into the alterant of Al-Sr intermediate alloy wire rod.
Accompanying drawing illustrates:
Fig. 1 is Al-Sr intermediate alloy wire stretching fracture apperance prepared by traditional handicraft；
Fig. 2 is the Al-Sr intermediate alloy wire stretching fracture apperance of embodiment 1 preparation；
Fig. 3 is the Al-Sr intermediate alloy wire stretching fracture apperance of embodiment 2 preparation；
Fig. 4 is Al-Sr intermediate alloy wire microstructure prepared by traditional handicraft；
Fig. 5 is the Al-Sr intermediate alloy wire microstructure of embodiment 1 preparation；
Fig. 6 is the Al-Sr intermediate alloy wire microstructure of embodiment 2 preparation；
Fig. 7 is that ZL102 is gone bad 60min microscopic structure by Al-Sr intermediate alloy wire rod prepared by traditional handicraft；
Fig. 8 is that ZL102 is gone bad 60min microscopic structure by the Al-Sr intermediate alloy wire rod of embodiment 1 preparation；
Fig. 9 is that ZL102 is gone bad 60min microscopic structure by the Al-Sr intermediate alloy wire rod of embodiment 2 preparation.
Detailed description of the invention:
The technological thought of the present invention is to have employed Al-Sr intermediate alloy wire rod prepared by ultrasound wave melt treatment, it is not necessary to
Extra add new alloying element, preparation technology low cost, simple to operate, practical.Ultrasound wave melt treatment produces in the solution
Cavitation bubble, the effect that Al4Sr phase in Al-Sr intermediate alloy is crushed by the high-energy that the collapse of cavitation bubble produces, make thick
Tiny, the disperse that nascent Al4Sr phase size becomes, ultrasound wave plays degasification, removes the gred, purifies the effect purifying melt in addition.Heat
Extruding is, by big variable deformation technology, Al4Sr phase in Al-Sr intermediate alloy is played refining effect.A kind of high-ductility of the present invention
In the efficient Al-Sr intermediate alloy alterant of property, Al4Sr phase size is little, be evenly distributed, disperse and Al-Sr intermediate alloy alterant
There is high tenacity, wire rod can be rolled into.
This preparation method comprises the following steps:
(1) preparation 3.6kg commercial-purity aluminium, 0.4kg technical pure strontium；
(2) graphite crucible of 5kg capacity is dried, then the commercial-purity aluminium prepared is put into graphite crucible carry out melting, melting
Temperature is 790 DEG C, adds technical pure strontium after commercial-purity aluminium is completely melt as aluminum liquid；
(3) after technical pure strontium is completely melt, ultrasound wave melt treatment is used；
(4) stand after, stainless steel tube is inserted aluminum liquid 2/3rds depths lead to argon and slowly do surrounding motion, ventilation 2 ~
3min, is poured in the mould of preheating after standing certain time, and mould is diameter 128mm, the metal die of high 40mm, and room temperature is cold
But molding；
(5) the extruding pad preheating of needs when Al-Sr intermediate alloy ingot step (4) prepared and extruding, by horizontal extruder
Pressurizing unit preheats；
(6) using horizontal extruder to extrude the Al-Sr intermediate alloy ingot of preheating, extrusion ratio is 40:1, obtains in the middle of Al-Sr
Alloy wire.
In described step (3), use the supersonic frequency 18KHz ~ 22KHz of ultrasound wave melt treatment.
In described step (3), ultrasound wave melt treatment time 10s ~ 60s.
In described step (4), mold preheating temperature 200 DEG C ~ 300 DEG C.
In described step (5), the extruding pad preheating temperature 450 DEG C ~ 500 needed when Al-Sr intermediate alloy ingot and extruding
℃；Horizontal extruder pressurizing unit preheating temperature 300 DEG C ~ 400 DEG C.
In step (1), described technical pure strontium kerosene seals.
Further describe in conjunction with present invention, and provide embodiment to further illustrate:
Embodiment 1
(1) preparation 3.6kg commercial-purity aluminium, 0.4kg technical pure strontium (technical pure strontium needs to seal with kerosene)；
(2) graphite of 5kg capacity is done pot dry, then the commercial-purity aluminium prepared is put into graphite do pot and carry out melting, melting
Temperature is 790 DEG C, adds technical pure strontium after commercial-purity aluminium is completely melt as aluminum liquid；
(3) after technical pure strontium is completely melt, use ultrasonic frequency in 20KHZ ultrasound wave melt treatment；
(4) ultrasound wave melt treatment time 30s；
(5) stand after, then import stainless steel tube insert aluminum liquid 2/3rds depths lead to argon and slowly do surrounding motion, ventilation 2 ~
3min, is poured in the mould of preheating after standing certain time at once, and mold preheating temperature 260 DEG C, die size is diameter
128mm, the metal type dies of high 40mm.Room temperature cooling molding；
(6) the extruding pad preheating needed when will prepare Al-Sr intermediate alloy ingot with extruding, preheats temperature 490 DEG C, horizontal crowded
Press ram preheats, and preheats temperature 350 DEG C；
(7) using horizontal extruder to extrude the Al-Sr intermediate alloy ingot of preheating, extrusion ratio is 40:1, a range of
Extrusion ratio, is squeezed into Al-Sr intermediate alloy wire rod；
Prepared Al-Sr intermediate alloy wire rod is carried out Mechanics Performance Testing and microstructure observation, finds and traditional handicraft
Comparing, Al-Sr intermediate alloy wire rod percentage elongation improves 5.25%, and in Al-Sr intermediate alloy, Al4Sr phase is more tiny, disperse and
It is evenly distributed.
Embodiment 2
(1) preparation 3.6kg commercial-purity aluminium, 0.4kg technical pure strontium (technical pure strontium needs to seal with kerosene)；
(2) graphite crucible of 5kg capacity is dried, then the commercial-purity aluminium prepared is put into graphite crucible carry out melting, melting
Temperature is 790 DEG C, adds technical pure strontium after commercial-purity aluminium is completely melt as aluminum liquid；
(3) after technical pure strontium is completely melt, use ultrasonic frequency in 22KHz ultrasound wave melt treatment；
(4) ultrasound wave melt treatment time 30s；
(5) stand after, then import stainless steel tube insert aluminum liquid 2/3rds depths lead to argon and slowly do surrounding motion, ventilation 2 ~
3min, is poured in the mould of preheating after standing certain time at once, and mold preheating temperature 260 DEG C, die size is diameter
128mm, the metal type dies of high 40mm.Room temperature cooling molding；
(6) the extruding pad preheating needed when will prepare Al-Sr intermediate alloy ingot with extruding, preheats temperature 490 DEG C, horizontal crowded
Press ram preheats, and preheats temperature 350 DEG C；
(7) using horizontal extruder to extrude the Al-Sr intermediate alloy ingot of preheating, extrusion ratio is 40:1, a range of
Extrusion ratio, is squeezed into Al-Sr intermediate alloy wire rod；
Prepared Al-Sr intermediate alloy wire rod is carried out Mechanics Performance Testing and microstructure observation, finds and traditional handicraft
Comparing, Al-Sr intermediate alloy wire rod percentage elongation improves 7.56%, has high tenacity, can be rolled into Al-Sr intermediate alloy coiled material；
Additionally, prepare the more tiny of Al4Sr phase transformation in Al-Sr intermediate alloy wire rod, in fine particle shape, it is evenly distributed, its equivalence
Radius of circle is 20.3um.
Al-Sr intermediate alloy alterant prepared by the present invention compared with other prior aries, Al-Sr intermediate alloy alterant
Percentage elongation be improved significantly so that Al-Sr intermediate alloy crimps rolling in process of production and uses, thus improves centre
The serviceability of alloy.Meanwhile, such Al-Sr intermediate alloy also improves the modification effect to Al-Si alloy, shortens
The rotten stage of incubation of Al-Si alloy.Wherein in Al-Sr intermediate alloy Sr generally presented in intermetallic compound Al4Sr,
Therefore, the stability of Al4Sr phase, i.e. it will be gone bad by complexity and diffusion velocity that Sr atom separates out from Al4Sr middle reaches
Playing of effect produces important effect, and the stability of Al4Sr phase and its form, size, crystal structure etc. are because have
Close.In Al-Sr intermediate alloy alterant prepared by the present invention, Al4Sr phase is tiny, disperse and being evenly distributed, and its percentage elongation obtains
Significantly improve, the most also improve Sr diffusion velocity in the melt, shorten the rotten stage of incubation of Al-Si alloy so that it is become
Matter effect is significantly improved.
Claims (6)
1. the efficient Al-Sr intermediate alloy alterant preparation method of a high tenacity, it is characterised in that: the method comprises following step
Rapid:
(1) preparation 3.6kg commercial-purity aluminium, 0.4kg technical pure strontium；
(2) graphite crucible of 5kg capacity is dried, then the commercial-purity aluminium prepared is put into graphite crucible carry out melting, melting
Temperature is 790 DEG C, adds technical pure strontium after commercial-purity aluminium is completely melt as aluminum liquid；
(3) after technical pure strontium is completely melt, ultrasound wave melt treatment is used；
(4) stand after, stainless steel tube is inserted aluminum liquid 2/3rds depths lead to argon and slowly do surrounding motion, ventilation 2 ~
3min, is poured in the mould of preheating after standing certain time, and mould is diameter 128mm, the metal die of high 40mm, and room temperature is cold
But molding；
(5) the extruding pad preheating of needs when Al-Sr intermediate alloy ingot step (4) prepared and extruding, by horizontal extruder
Pressurizing unit preheats；
(6) using horizontal extruder to extrude the Al-Sr intermediate alloy ingot of preheating, extrusion ratio is 40:1, obtains in the middle of Al-Sr
Alloy wire.
The efficient Al-Sr intermediate alloy alterant preparation method of high tenacity the most according to claim 1, it is characterised in that:
In described step (3), use the supersonic frequency 18KHz ~ 22KHz of ultrasound wave melt treatment.
The efficient Al-Sr intermediate alloy alterant preparation method of high tenacity the most according to claim 1, it is characterised in that:
In described step (3), ultrasound wave melt treatment time 10s ~ 60s.
The efficient Al-Sr intermediate alloy alterant preparation method of high tenacity the most according to claim 1, it is characterised in that:
In described step (4), mold preheating temperature 200 DEG C ~ 300 DEG C.
The efficient Al-Sr intermediate alloy alterant preparation method of high tenacity the most according to claim 1, it is characterised in that:
In described step (5), the extruding pad preheating temperature 450 DEG C ~ 500 DEG C needed when Al-Sr intermediate alloy ingot and extruding；Horizontal crowded
Press ram preheating temperature 300 DEG C ~ 400 DEG C.
The efficient Al-Sr intermediate alloy alterant preparation method of high tenacity the most according to claim 1, it is characterised in that:
In step (1), described technical pure strontium kerosene seals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610343391.6A CN105925825A (en) | 2016-05-23 | 2016-05-23 | Preparation method for high-tenacity efficient Al-Sr intermediate alloy alterant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610343391.6A CN105925825A (en) | 2016-05-23 | 2016-05-23 | Preparation method for high-tenacity efficient Al-Sr intermediate alloy alterant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105925825A true CN105925825A (en) | 2016-09-07 |
Family
ID=56842002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610343391.6A Pending CN105925825A (en) | 2016-05-23 | 2016-05-23 | Preparation method for high-tenacity efficient Al-Sr intermediate alloy alterant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105925825A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109112366A (en) * | 2018-10-29 | 2019-01-01 | 长春工业大学 | A kind of processing method of aluminum-silicon alloy alterative |
| CN115141945A (en) * | 2022-08-01 | 2022-10-04 | 立中四通轻合金集团股份有限公司 | Preparation method of aluminum-strontium intermediate alloy coiled material with strontium content of more than 10wt% |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104195385A (en) * | 2014-08-29 | 2014-12-10 | 沈阳工业大学 | Permanent modifier capable of improving electrical conductivity of hypo eutectic Al-Si alloy as well as preparation method and using method of permanent modifier |
| CN104711440A (en) * | 2015-04-09 | 2015-06-17 | 芜湖永裕汽车工业有限公司 | Preparation technique of aluminum-strontium alloy modifier |
| CN104942242A (en) * | 2015-06-01 | 2015-09-30 | 江苏新创雄铝制品有限公司 | Dual grain refinement method for automobile aluminum alloy hub |
-
2016
- 2016-05-23 CN CN201610343391.6A patent/CN105925825A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104195385A (en) * | 2014-08-29 | 2014-12-10 | 沈阳工业大学 | Permanent modifier capable of improving electrical conductivity of hypo eutectic Al-Si alloy as well as preparation method and using method of permanent modifier |
| CN104711440A (en) * | 2015-04-09 | 2015-06-17 | 芜湖永裕汽车工业有限公司 | Preparation technique of aluminum-strontium alloy modifier |
| CN104942242A (en) * | 2015-06-01 | 2015-09-30 | 江苏新创雄铝制品有限公司 | Dual grain refinement method for automobile aluminum alloy hub |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109112366A (en) * | 2018-10-29 | 2019-01-01 | 长春工业大学 | A kind of processing method of aluminum-silicon alloy alterative |
| CN115141945A (en) * | 2022-08-01 | 2022-10-04 | 立中四通轻合金集团股份有限公司 | Preparation method of aluminum-strontium intermediate alloy coiled material with strontium content of more than 10wt% |
| CN115141945B (en) * | 2022-08-01 | 2023-10-31 | 立中四通轻合金集团股份有限公司 | Preparation method of aluminum-strontium intermediate alloy coiled material with strontium content being more than 10wt% |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Lü et al. | Preparation and rheocasting of semisolid slurry of 5083 Al alloy with indirect ultrasonic vibration process | |
| CN106140847B (en) | A kind of magnesium alloy compressional deformation processing unit (plant) and processing method | |
| Dai et al. | Effects of rheo-squeeze casting parameters on microstructure and mechanical properties of AlCuMnTi alloy | |
| CN108754362A (en) | A kind of production method of new-energy automobile aluminium alloy electric casing | |
| CN106756330B (en) | The aluminium alloy extrusions and manufacture method of a kind of body of a motor car | |
| CN109022859B (en) | Preparation method of nano titanium particle reinforced magnesium-based composite material | |
| CN102615257B (en) | Method for refining and spheroidizing metal or alloy | |
| Lü et al. | Microstructure and tensile properties of wrought Al alloy 5052 produced by rheo-squeeze casting | |
| CN102319881B (en) | Equipment and method for simultaneously preparing multiple round aluminum alloy ingots | |
| CN107747014A (en) | One kind has high ductibility high-strength magnesium alloy and preparation method thereof | |
| CN108468005A (en) | A kind of 6000 line aluminium alloy large deformation extruded bars production technologies | |
| CN110066951B (en) | Ultrahigh-plasticity magnesium alloy and preparation method of wrought material thereof | |
| CN105603268B (en) | The manufacture method of the aldray conducting tube bus of high-strength high-conductivity | |
| CN108385000B (en) | The processing technology and application of aluminium alloy and aluminium alloy extrusions | |
| CN108330366A (en) | A kind of self-reinforcing toughening magnesium alloy and preparation method thereof | |
| CN105154697A (en) | Production system of intermediate alloy wires and production technology of intermediate alloy wires | |
| CN105908034A (en) | Aluminum alloy round bar and manufacturing method thereof | |
| CN105925825A (en) | Preparation method for high-tenacity efficient Al-Sr intermediate alloy alterant | |
| CN104805385A (en) | Homogenization thermal-treatment method for ultra-large semi-continuous cast round ingot | |
| CN111790864B (en) | Forging method for improving oxidation resistance and electric breakdown performance of 6-series aluminum alloy | |
| CN103668013B (en) | Method for super-plastic pretreatment of in situ aluminum base composite material | |
| CN111763837A (en) | Method for refining hypereutectic aluminum-silicon alloy primary silicon phase | |
| CN109306418A (en) | Novel 7 line aluminium alloy material and its manufacturing method based on founding and hot extrusion | |
| CN105855309A (en) | Extrusion forming method for A356 aluminum alloy | |
| CN107475651A (en) | Magnesium alloy extrusion sectional die and its casting extrusion shearing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160907 |