CN109396380A - A kind of method of semisolid pressure casting preparation high thermal conductivity baking tray - Google Patents
A kind of method of semisolid pressure casting preparation high thermal conductivity baking tray Download PDFInfo
- Publication number
- CN109396380A CN109396380A CN201811383354.3A CN201811383354A CN109396380A CN 109396380 A CN109396380 A CN 109396380A CN 201811383354 A CN201811383354 A CN 201811383354A CN 109396380 A CN109396380 A CN 109396380A
- Authority
- CN
- China
- Prior art keywords
- baking tray
- thermal conductivity
- aluminium alloy
- high thermal
- alloy
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/007—Semi-solid pressure die casting
-
- 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
- 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
- C22C21/00—Alloys based on aluminium
Abstract
The present invention relates to a kind of methods of semisolid pressure casting preparation high thermal conductivity baking tray, including melting in smelting furnace is added in aluminium alloy cast ingot, and control smelting temperature is 740-760 DEG C；Al-5B alloy is added in smelting furnace, controlled at 740-760 DEG C, keeps the temperature 0.5-1h；Al-10Sr alloy is added in smelting furnace, controlled at 740-760 DEG C, 0.5-1h is kept the temperature, obtains molten aluminium alloy；Aluminum alloy melt is refined, degasification, slagging-off；High-speed stirred is carried out to the aluminum alloy melt after slagging-off using electromagnetic agitation, when stirring is cooled to 620-640 DEG C, mixing time 30-40min, mixing speed 250-500rpm, obtains the die casting liquid of semisolid；Die casting liquid is transferred to high-pressure and hydraulic die casting machine, aluminium alloy baking tray blank is gone out by baking tray die casting；After the polishing of aluminium alloy baking tray blank, coating is carried out, high thermal conductivity baking tray finished product is obtained.The baking tray production method prepared by means of the present invention is simple, good heat conduction effect, is suitble to promote the use of in baking field.
Description
Technical field
The present invention relates to the baking tray manufacture crafts for oven, and in particular to a kind of semisolid pressure casting preparation high thermal conductivity baking tray
Method.
Background technique
Oven becomes household electrical appliance indispensable in family now, and the roasted food product taste of oven is aromatic palatable.It is roasting
There are many materials for the baking tray of case, and relatively conventional has stainless steel baking tray, aluminum baking tray, glass roasting plate, other alloy baking trays etc.
Deng, wherein the heat-conducting effect of steel baking tray is worst, and cause easy uneven heating in baking process even, and the baking tray of aluminium alloy becomes
Optimal selection.In the manufacturing field of aluminium alloy, die casting is current most important casting technique, high production efficiency, material
Utilization rate is high, is suitble to large-scale industrial production.In order to guarantee mobile performance when die casting, it will usually be added about in aluminium alloy
10% silicon, such as the aluminium alloy of the domestic code name YL113 in China, usually contain 9.5-11.5% silicon, since the lattice of the alloy is sent out
Raw distortion generates biggish resistance to the movement of free electron, to also cause the heating conduction of this aluminium alloy not high, generally
Thermal coefficient only has the left and right 100W/ (mK).
Therefore, the baking tray for manufacturing high thermal conductivity seems especially urgent for baking field.Have in the prior art and leads to
It crosses and changes the report that silicon mutually changes thermal conductivity, composite inoculating is occurred by the boron of addition 0.02% and 0.03% strontium, handles aluminium
Silicon alloy, Si phase are changed into threadiness by lamellar, make annealing treatment within four hours through 350 DEG C, so that the thermal coefficient of alloy improves
To about 179W/ (mK), but the above research is closed only using aluminium alloy ENAB-44200 as raw material when using the aluminium of superelevation copper content
Jin Shi, since the copper content between the latter is significantly larger than ENAB-44200, the finished product that die casting obtains in the above conditions is easy hair
The precipitation of the pig copper.
Therefore, it is necessary to research and develop a kind of easy to make, preparation method of the high aluminium alloy baking tray of heat transfer efficiency.
Summary of the invention
The present invention overcomes the deficiencies in the prior art, provide a kind of easy to make, thermal conductivity height, suitable high rigidity 2A16 aluminium
Alloy, 2A17 aluminium alloy, 2A20 aluminium alloy etc. carry out the preparation method of die casting baking tray.
In order to achieve the above objectives, the technical solution adopted by the present invention are as follows: a kind of semisolid pressure casting preparation high thermal conductivity baking tray
Method, comprising:
A. melting in smelting furnace is added in aluminium alloy cast ingot, control smelting temperature is 740-760 DEG C；
B. Al-5B alloy is added in smelting furnace, controlled at 740-760 DEG C, keeps the temperature 0.5-1h；
C. Al-10Sr alloy is added in smelting furnace, controlled at 740-760 DEG C, keeps the temperature 0.5-1h, it is molten obtains aluminium alloy
Liquid；
D. aluminum alloy melt is refined, degasification, slagging-off；
E. high-speed stirred is carried out to the aluminum alloy melt after slagging-off using electromagnetic agitation, when stirring is cooled to 620-640 DEG C, stirring
Time is 30-40min, mixing speed 250-500rpm, obtains the die casting liquid of semisolid；
F. die casting liquid is transferred to high-pressure and hydraulic die casting machine, aluminium alloy baking tray blank is gone out by baking tray die casting；
G. after the polishing of aluminium alloy baking tray blank, coating is carried out, high thermal conductivity baking tray finished product is obtained；
Wherein, the additional amount of Sr element accounts for the 0.03-0.05wt% of total alloy additional amount, and B element additional amount accounts for total alloy additional amount
0.03-0.05 wt%, the aluminium alloy cast ingot be selected from one of 2A16 aluminium alloy, 2A17 aluminium alloy, 2A20 aluminium alloy or
A variety of, the pressure in the press casting procedure is 200-250MPa, and the dwell time is 5-10 seconds.
It is believed that can be had an impact when melt undercooling to the size of the nuclei of crystallization, leads to and Clausius-Clapeyron equation is analyzed
It is found that the temperature of crystallization is also higher when the pressure rise to as cast condition melt, the size of corresponding nucleus is also smaller.
The addition of copper may make the intensity of aluminium alloy and hardness to increase, when temperature is higher than 125 DEG C, the intensity of 2 series alloys
Still it is much higher than 7 series alloys, is particularly suitable for applying under this hot environment of oven.Typical higher copper alloys have 2A16 aluminium
Alloy, 2A17 aluminium alloy and 2A20 aluminium alloy.
But for 2A16,2A17 or 2A20 alloy higher for copper content, copper is easier to be precipitated and lead to aluminium phase
It is inhomogenous, it can also have a negative impact to thermal coefficient.
The difference of semisolid pressure casting and traditional die casting is, when melting slurries are filled to mold, uses semi solid slurry
Material, has begun solidification, and solidify completely in mold except mold.It is carried out during from liquid metal to solid metallic strong
Strong stirring can make the skeleton for being easily formed tree-shaped lattice originally broken, and retain the graininess more easily dispersed
Tissue morphology can be used above method theoretically to avoid copper is brilliant from gathering and be precipitated, solve to cast caused by the precipitation because of copper
The problem of face out-of-flatness and heat transfer efficiency reduce.
In a preferred embodiment of the present invention, the raw material used is high copper content aluminium alloy, Cu element in finished product
Account for the 5.8-7.0wt% of total alloy, preferably 6-6.8wt%.
The thermal coefficient for the aluminium alloy high thermal conductivity baking tray that the method is prepared through the invention is greater than 170W/ (m
K)。
In a preferred embodiment of the present invention, the coating is selected from polytetrafluorethylecoatings coatings or medical stone applies
Layer.Polytetrafluorethylecoatings coatings are relatively conventional non-sticky coatings, are applied in baking tray extensively.Medical stone coating is newest stream
Capable coating, both the above coating can avoid food and directly contact with aluminium alloy ontology, and use is safer.
In a preferred embodiment of the present invention, in the step f, baking tray mold is heated and is kept the temperature in 150-170
Die casting is carried out after DEG C again.
Another goal of the invention of the invention is, provides a kind of baking tray with high thermal conductivity effect.The baking tray passes through
Above method prepares.Preferably, baking tray is with a thickness of 1-2mm.
The invention solves the defect existing in the background technology, and beneficial effects of the present invention are as follows:
1, the aluminium alloy baking tray thermal conductivity with higher of preparation method die casting of the invention, when bakery product heat transfer uniformly, no
It is easy to cause cooked-on burned, the oven use of satisfaction baking new hand, temperature control effect difference.
2, high pressure die casting has been selected to cooperate semisolid pressure casting in pressure casting method of the invention, so that the aluminium high for copper content
Alloy also can guarantee that casting is smooth, bubble-free while guaranteeing high thermal conductivity coefficient.Due to the state in high-speed stirred
Under, so that nucleus is smaller, it can thus be avoided the use of super-pressure, reduces the production and maintenance cost of enterprise, to apparatus
Requirement also reduce.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the micro-structure diagram of the sample of embodiment number 5；
Fig. 2 is the Metallographic Analysis figure of the sample of embodiment number 5.
Specific embodiment
It is described below for disclosing the present invention so that those skilled in the art can be realized the present invention.It is excellent in being described below
Embodiment is selected to be only used as illustrating, it may occur to persons skilled in the art that other obvious modifications.
Embodiment
In the preferred embodiment of the present invention, the method for semisolid pressure casting preparation high thermal conductivity baking tray, comprising:
A. melting in smelting furnace is added in aluminium alloy cast ingot, control smelting temperature is 740-760 DEG C；
B. Al-5B alloy is added in smelting furnace, controlled at 740-760 DEG C, keeps the temperature 0.5-1h；
C. Al-10Sr alloy is added in smelting furnace, controlled at 740-760 DEG C, keeps the temperature 0.5-1h, it is molten obtains aluminium alloy
Liquid；
D. aluminum alloy melt is refined, degasification, slagging-off；
E. high-speed stirred is carried out to the aluminum alloy melt after slagging-off using electromagnetic agitation, when stirring is cooled to 620-640 DEG C, stirring
Time is 30-40min, mixing speed 250-500rpm, obtains the die casting liquid of semisolid；
F. die casting liquid is transferred to high-pressure and hydraulic die casting machine, aluminium alloy baking tray blank is gone out by baking tray die casting；
G. after the polishing of aluminium alloy baking tray blank, coating is carried out, high thermal conductivity baking tray finished product is obtained.
Aluminium ingot raw material used and process conditions are as shown in table 1 below.
Table 1
| Number | Ingot casting raw material | Sr(wt%) | B(wt%) | Pressure (MPa) | Die casting mode |
| 1 | 2A16 | 0 | 0.03 | 200 | Semisolid pressure casting |
| 2 | 2A16 | 0.03 | 0 | 200 | Semisolid pressure casting |
| 3 | 2A16 | 0.03 | 0.03 | 200 | Semisolid pressure casting |
| 4 | 2A17 | 0.05 | 0.05 | 125 | Semisolid pressure casting |
| 5 | 2A20 | 0.03 | 0.03 | 250 | Semisolid pressure casting |
| 6 | 2A20 | 0.03 | 0.03 | 200 | Liquid die casting |
Wherein, the sample of number 1-5 is to be prepared using above-mentioned semisolid pressure casting, and the sample that number is 6 is prepared using liquid die casting,
Sample of remaining condition with number 1-5.
Test is sampled to the sample of number 1-6 before coating, test comparison at sample center is intercepted, using C-
THERM TCI heat conduction coefficient tester measures.
The results are shown in Table 2 for Determination of conductive coefficients.
Table 2
| Number | 1 | 2 | 3 | 4 | 5 | 6 |
| Thermal coefficient W/ (mK) | 129.9 | 116.7 | 171.3 | 140.5 | 185.8 | 145.2 |
Through result as can be seen that under high pressure die casting, by using the mode of semisolid pressure casting, high-copper aluminium can effectively improve
The thermal coefficient of alloy, such as the sample that number is 3,5, thermal coefficient are higher than 170 W/ (mK).
The sample that number is 5 is taken to carry out metallographic research, method is by sample polishing grinding, with the hydrofluoric acid corruption of 0.5% concentration
Erosion, the tissue visualization texture under Zeiss polarised light optical microscopy or metallographic microscope.
Fig. 1 is the micro-structure diagram obtained under the microscope in Zeiss polarised light optical microphotograph, can be seen by the result of Fig. 1
Out, the aluminum alloy organization structure even tissue by die casting is tiny, almost without casting flaw.
Fig. 2 is the micro-organization chart obtained under the microscope in metallography microscope, answers shape originally it can be seen from the result of Fig. 2
At metal tree, what is obtained after stirring is spherulite, the crystalline state of aluminium alloy is improved, so that aluminium alloy
Product has high-intensitive, high tenacity and high thermal conductivity coefficient.
The high thermal conductivity baking tray being prepared by means of the present invention has excellent thermal conductivity and tensile strength, and high
Copper content aluminium alloy itself has good heat resistance, is particularly suitable for being made baking tray applied to the higher oven environment of temperature, life
Production method is simple, is suitble to large-scale production.
Based on the above description of the preferred embodiments of the present invention, through the above description, related personnel completely can be with
Without departing from the scope of the technological thought of the present invention', various changes and amendments are carried out.The technical scope of this invention
It is not limited to the contents of the specification, it is necessary to determine the technical scope according to the scope of the claims.
Claims (7)
1. a kind of method of semisolid pressure casting preparation high thermal conductivity baking tray, it is characterised in that: include:
A. melting in smelting furnace is added in aluminium alloy cast ingot, control smelting temperature is 740-760 DEG C；
B. Al-5B alloy is added in smelting furnace, controlled at 740-760 DEG C, keeps the temperature 0.5-1h；
C. Al-10Sr alloy is added in smelting furnace, controlled at 740-760 DEG C, keeps the temperature 0.5-1h, it is molten obtains aluminium alloy
Liquid；
D. aluminum alloy melt is refined, degasification, slagging-off；
E. high-speed stirred is carried out to the aluminum alloy melt after slagging-off using electromagnetic agitation, when stirring is cooled to 620-640 DEG C, stirring
Time is 30-40min, mixing speed 250-500rpm, obtains the die casting liquid of semisolid；
F. die casting liquid is transferred to high-pressure and hydraulic die casting machine, aluminium alloy baking tray blank is gone out by baking tray die casting；
G. after the polishing of aluminium alloy baking tray blank, coating is carried out, high thermal conductivity baking tray finished product is obtained；
Wherein, the additional amount of Sr element accounts for the 0.03-0.05wt% of total alloy additional amount, and B element additional amount accounts for total alloy additional amount
0.03-0.05 wt%, the aluminium alloy cast ingot be selected from one of 2A16 aluminium alloy, 2A17 aluminium alloy, 2A20 aluminium alloy or
A variety of, the pressure in the press casting procedure is 200-250MPa, and the dwell time is 5-10 seconds.
2. a kind of method of semisolid pressure casting preparation high thermal conductivity baking tray according to claim 1, it is characterised in that: Cu element
Account for the 5.8-7.0wt% of total alloy, preferably 6-6.8wt%.
3. a kind of method of semisolid pressure casting preparation high thermal conductivity baking tray according to claim 1, it is characterised in that: the height
The thermal coefficient of thermally conductive baking tray is greater than 170W/ (mK).
4. a kind of method of semisolid pressure casting preparation high thermal conductivity baking tray according to claim 1, it is characterised in that: the painting
Layer choosing is from polytetrafluorethylecoatings coatings or medical stone coating.
5. a kind of method of semisolid pressure casting preparation high thermal conductivity baking tray according to claim 1, it is characterised in that: the step
In rapid f, baking tray mold is heated and kept the temperature carries out die casting again after 150-170 DEG C.
6. high thermal conductivity baking tray made from the preparation method of any one of -5 high thermal conductivity baking trays according to claim 1.
7. high thermal conductivity baking tray according to claim 6, it is characterised in that: baking tray is with a thickness of 1-2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811383354.3A CN109396380B (en) | 2018-11-20 | 2018-11-20 | Method for preparing high-heat-conductivity baking tray through semi-solid die-casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811383354.3A CN109396380B (en) | 2018-11-20 | 2018-11-20 | Method for preparing high-heat-conductivity baking tray through semi-solid die-casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109396380A true CN109396380A (en) | 2019-03-01 |
| CN109396380B CN109396380B (en) | 2020-12-15 |
Family
ID=65474095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811383354.3A Active CN109396380B (en) | 2018-11-20 | 2018-11-20 | Method for preparing high-heat-conductivity baking tray through semi-solid die-casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109396380B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111974964A (en) * | 2020-09-09 | 2020-11-24 | 苏州慧驰轻合金精密成型科技有限公司 | Ultrahigh-strength high-heat-conductivity semisolid extrusion casting aluminum alloy casting and preparation process thereof |
| CN112517873A (en) * | 2020-11-01 | 2021-03-19 | 广州德珐麒自动化技术有限公司 | Preparation process of semisolid aluminum alloy slurry |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11104804A (en) * | 1993-12-13 | 1999-04-20 | Hitachi Metals Ltd | Method for adjusting material |
| CN107164664A (en) * | 2017-04-11 | 2017-09-15 | 浙江洋铭工贸有限公司 | A kind of high thermal conductivity alloy for die-casting aluminum heating radiator heat conduction |
| CN107983929A (en) * | 2018-01-05 | 2018-05-04 | 北京科技大学 | A kind of heating furnace cobalt alloy cushion block semi-solid die casting process |
| CN108149083A (en) * | 2016-12-02 | 2018-06-12 | 比亚迪股份有限公司 | A kind of semisolid pressure casting aluminium alloy and the method for preparing semisolid pressure casting aluminium alloy castings |
| CN108165842A (en) * | 2017-12-25 | 2018-06-15 | 广东省材料与加工研究所 | A kind of semisolid pressure casting high heat conduction aluminium alloy and its pressure casting method |
| CN108246999A (en) * | 2018-03-14 | 2018-07-06 | 富钛金属科技(昆山)有限公司 | A kind of semi-solid-state metal compression molding process |
| CN108796317A (en) * | 2018-06-25 | 2018-11-13 | 苏州慧驰轻合金精密成型科技有限公司 | Suitable for new-energy automobile can semi-solid squeeze casting aluminium alloy and preparation method |
-
2018
- 2018-11-20 CN CN201811383354.3A patent/CN109396380B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11104804A (en) * | 1993-12-13 | 1999-04-20 | Hitachi Metals Ltd | Method for adjusting material |
| CN108149083A (en) * | 2016-12-02 | 2018-06-12 | 比亚迪股份有限公司 | A kind of semisolid pressure casting aluminium alloy and the method for preparing semisolid pressure casting aluminium alloy castings |
| CN107164664A (en) * | 2017-04-11 | 2017-09-15 | 浙江洋铭工贸有限公司 | A kind of high thermal conductivity alloy for die-casting aluminum heating radiator heat conduction |
| CN108165842A (en) * | 2017-12-25 | 2018-06-15 | 广东省材料与加工研究所 | A kind of semisolid pressure casting high heat conduction aluminium alloy and its pressure casting method |
| CN107983929A (en) * | 2018-01-05 | 2018-05-04 | 北京科技大学 | A kind of heating furnace cobalt alloy cushion block semi-solid die casting process |
| CN108246999A (en) * | 2018-03-14 | 2018-07-06 | 富钛金属科技(昆山)有限公司 | A kind of semi-solid-state metal compression molding process |
| CN108796317A (en) * | 2018-06-25 | 2018-11-13 | 苏州慧驰轻合金精密成型科技有限公司 | Suitable for new-energy automobile can semi-solid squeeze casting aluminium alloy and preparation method |
Non-Patent Citations (3)
| Title |
|---|
| 潘志勇: "半固态加工的高铜Al-Cu合金性能研究", 《贵州大学学报（自然科学版）》 * |
| 王剑: "高导热共晶Al-Si合金的制备及其性能", 《特种铸造及有色合金》 * |
| 雍晓茹: "《家庭厨房实用百科》", 28 February 2001, 中国人事出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111974964A (en) * | 2020-09-09 | 2020-11-24 | 苏州慧驰轻合金精密成型科技有限公司 | Ultrahigh-strength high-heat-conductivity semisolid extrusion casting aluminum alloy casting and preparation process thereof |
| CN112517873A (en) * | 2020-11-01 | 2021-03-19 | 广州德珐麒自动化技术有限公司 | Preparation process of semisolid aluminum alloy slurry |
| CN112517873B (en) * | 2020-11-01 | 2022-04-12 | 广州德珐麒自动化技术有限公司 | Preparation process of semisolid aluminum alloy slurry |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109396380B (en) | 2020-12-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104232978B (en) | A kind of preparation method of copper silver zircaloy large size forging biscuit | |
| CN104294110B (en) | A kind of process that can improve polynary hypoeutectic al-si alloy mechanical property | |
| CN107904440B (en) | High-temperature titanium alloy material and preparation method thereof | |
| CN105506318B (en) | A kind of production technology of extra super duralumin alloy | |
| CN109396380A (en) | A kind of method of semisolid pressure casting preparation high thermal conductivity baking tray | |
| CN110643911A (en) | Thermal mechanical treatment method of eutectic high-entropy alloy | |
| CN102168220B (en) | Method for preparing inoculant for refining as-cast structure of spring steel and application method thereof | |
| CN110257689A (en) | A kind of high polishing pre-hardening plastic mould steel and its preparation process | |
| CN111074131B (en) | Thermal mechanical treatment method of eutectic high-entropy alloy | |
| CN109136628A (en) | A kind of hot rolling technology of 6xxx aluminium alloy | |
| CN109454214B (en) | Method for preparing high-heat-conductivity baking tray through ultrasonic die casting | |
| CN111074103A (en) | Die-casting aluminum alloy and refining process thereof | |
| CN109396381A (en) | A kind of physical deterioration semisolid pressure casting preparation method of high thermal conductivity baking tray | |
| CN113881877A (en) | Aluminum alloy strip and preparation method and application thereof | |
| CN100441715C (en) | Super large-scale aluminium alloy free forging piece and its prodn. method | |
| CN108998703B (en) | Self-inoculating rod, preparation method thereof and preparation method of hypoeutectic aluminum-silicon alloy semi-solid slurry | |
| CN111519057A (en) | Method for prolonging service life of die for preparing aluminum alloy | |
| CN106086537A (en) | A kind of Al-Ti-B alloy and powder metallurgy forming method thereof | |
| CN114703403B (en) | CoCrMo alloy, preparation method and application thereof | |
| CN102644011A (en) | Aluminium alloy semi-solid preform body and preparation method thereof | |
| CN106868274A (en) | A kind of ultra-fine spheroidal graphite processing method of cast iron surface | |
| CN109628778A (en) | A kind of preparation method of high thermal conductivity baking tray | |
| CN1036229A (en) | Mishmetal cast aluminium alloy and method for making thereof | |
| CN112795914A (en) | Method for preparing in-situ synthesized TiC/NiCrBSi composite coating on surface of die steel | |
| CN117001014B (en) | Rapid development method of cracking-free metal material for 3D printing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |