CN105861868A - Smelting and die-casting process for aluminum alloy - Google Patents
Smelting and die-casting process for aluminum alloy Download PDFInfo
- Publication number
- CN105861868A CN105861868A CN201610320099.2A CN201610320099A CN105861868A CN 105861868 A CN105861868 A CN 105861868A CN 201610320099 A CN201610320099 A CN 201610320099A CN 105861868 A CN105861868 A CN 105861868A
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- China
- Prior art keywords
- alloy
- die
- aluminum
- smelting
- casting
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- 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.)
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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
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
- B22D21/02—Casting exceedingly oxidisable non-ferrous metals, e.g. in inert atmosphere
- B22D21/04—Casting aluminium or magnesium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/003—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals by induction
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Of Metal (AREA)
Abstract
The invention provides a smelting and die-casting process for aluminum alloy. The process is mainly used for aluminum-manganese-copper alloy and aluminum-magnesium-copper alloy and is realized mainly through the following steps that a, alloy is smelted, specifically, a central smelting furnace is preheated, metals such as aluminum, manganese and copper or aluminum, magnesium and copper are added to be melted, and molten alloy is obtained; b, electromagnetic convective mixing is conducted, specifically, the molten alloy is transferred into a holding furnace, an electromagnetic field is applied to the bottom of the holding furnace, so that the molten alloy is made to generate induced eddy current; c, gas of the molten alloy is removed; d, vacuum packing is conducted, specifically, the molten alloy is supplied into a die-casting die through a vacuum maker; and e, hot die-casting is conducted, specifically, the temperature of the molten alloy is controlled to be 550-650 DEG C, the molten alloy is poured into the die-casting die to be die-cast, and finished products are obtained. According to the smelting and die-casting process for the aluminum alloy, the problem that metallic elements are mixed insufficiently and energy consumption is large in existing aluminum-based alloy smelting and die-casting processes are solved, the quality of aluminum alloy can be remarkably improved, contraction cavities of die-cast parts are reduced, and the production efficiency is improved.
Description
Technical field:
The present invention relates to extrusion process field, especially relate to a kind of aluminum manganin or aluminium magnesium copper alloy melting pressure
Casting process.
Background technology:
Acieral is with aluminum as matrix, adds the alloy material of the element meltings such as magnesium, copper, manganese, by extensively
General for industries such as automobile making, five metals, lathe, valve, sanitary equipment.Traditional aluminium alloy processing technique is main
There is following defect: first, it is impossible to produce alloy product by common thermal die casting machine technique, sand can only be used
Mold casting or cold chamber die-casting machine die casting, in casting process, cast temperature is high, and energy consumption is big, and equipment loss is the most relatively
Greatly.Secondly, there is the problem that mixing is uneven in metallic element, and liquation transmission link is intensive with air contact,
And the time is longer, in press casting procedure, easily produces shrinkage cavity phenomenon, affect quality of die casting.
Summary of the invention:
It is an object of the invention to for the problems referred to above, it is provided that one can use common thermal die casting machine technique to produce
Aluminium alloy, and significantly improve aluminum alloy die casting quality, reduce the aluminium alloy smelting extrusion process of energy consumption.
For reaching above-mentioned purpose, the present invention uses following technical proposal: this aluminium alloy smelting extrusion process, it is special
Levy and be, realize by following steps: a. alloy melting: first by central authorities' furnace heats, add aluminum copper-manganese or magnalium
The metal melt such as copper, obtain alloy molten solution；B. electromagnetism convection agitation: alloy molten solution is transferred in holding furnace,
Temperature controls at 670-690 DEG C, applies electromagnetic field bottom holding furnace, and alloy solution produces inductive loop；c.
Get rid of alloy molten solution gas: being passed through dry chlorine by graphite-pipe in aluminium alloy, the process time divides at 5-6
About clock, the when of process, molten being good for be closed, after process, the temperature of alloy molten solution be brought up to
690-750℃；D. vacuum filler: using vacuum to manufacture device will get rid of the alloy solution of gas in die casting；
E. hot type die casting: alloy molten solution, at 550-650 DEG C, is poured into die casting and presses by control alloy molten solution temperature
Get product after casting.
The invention have the benefit that the present invention creatively uses underlying for alloy molten solution electromagnetic field, make electromagnetism
Field produces inductive loop with alloy molten solution effect, accelerates the mixing of molten aluminium alloy, adds chlorine eliminating alloy molten
Gas in liquid, and in transmitting procedure, creatively use pumped vacuum systems to carry out the transmission of alloy molten solution,
Protect in liquation transmitting procedure greatly is airtight, has completely cut off and too much contact of air, holding alloy molten solution
Pure, reduce and press casting procedure produce shrinkage cavity.
Figure of description:
Fig. 1 is the basic flow sheet of the present invention.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further details.
Embodiment 1:
As it is shown in figure 1, this aluminium alloy smelting extrusion process is realized by following step: a, alloy are molten
Refining；B, electromagnetic agitation；C, eliminating alloy molten solution gas；D, vacuum filler；E, hot type die casting.
Melting uses central authorities' smelting furnace to concentrate melting.First central authorities' smelting furnace is preheating to 200 DEG C, adds AL99.90 aluminum
Ingot post-heating to 550-650 DEG C, adds after aluminium ingot fully melts and accounts for magnesium ingot or the manganese ingot of gross weight 15% and account for
Gross weight 1% bronze medal.Aluminum liquid need to cover magnesium ingot or manganese ingot.After all melting, add and account for gross weight 0.3% aluminum
Gold refining agent, kirsite refining agent is with in bell jar press-in alloy molten solution.Add kirsite refining agent 15～
The scum silica frost on alloy molten solution surface is removed after 20 minutes.So far, alloy molten solution has i.e. been prepared.
Alloy molten solution in central authorities' smelting furnace is put into rustless steel electromagnetization holding furnace.Holding furnace is to use electric heating tube
To alloy molten solution heating, to ensure that alloy molten solution temperature constant is at 600 DEG C.Add in holding furnace for the first time
During alloy molten solution, it is necessary to assure submergence electric heating tube.It is electrically heated after adding alloy molten solution, simultaneously in insulation
Furnace bottom applies the magnetic field rotated.Magnetic field is to utilize electromagnetic induction principle, uses driven by motor magnet to rotate and produces
's.In the rotation process of magnetic field, alloy molten solution produces inductive loop, so that the composition mixing in alloy molten solution is all
Even, metallic crystalline structure fine uniform.High alumina zinc base alloy liquation passes through the action of a magnetic field, and the content of magnesium or manganese can
To improve 10～15%, making product have density little, wearability is good, anticorrosive, and mechanical performance is superior, adds
The characteristics such as work performance is good, nonmagnetic, no-spark.Meanwhile, the eddy current of generation makes metal inside generate heat rapidly, fall
Low cast temperature, saves the energy.Experiment shows, when acieral content of magnesium is 15%, casting temperature needs 650 DEG C,
And after using magnetizing method, casting temperature only needs 550 DEG C, reduce energy consumption 15%.Meanwhile, pressure is also extended
Casting machine die-casting system, the service life of heating system.
Being passed through dry chlorine by graphite-pipe in aluminium alloy, the time that processes, at about 5 minutes, adds chlorine
Make aluminium alloy bubbling, and hydrogen is brought out from aluminium alloy, and chlorine can be with the hydrogen being dissolved in aluminium alloy
Gas generation chemical reaction, forms readily volatilized hydrogen chloride.Chlorine also can be formed with the aluminum effect in aluminium alloy
Vaporous aluminum chloride, takes away hydrogen from aluminium alloy.The flow of gas is about bubble each second 15-22.Enter
The when that row processing, molten being good for be closed.The most soon the temperature of alloy is brought up to 700 DEG C after process.
Alloy molten solution is after completing magnetization stirring, getting rid of gas, it is necessary to transfer in die casting machine holding furnace,
The present invention is that the mode utilizing vacuum filler realizes.Utilize the suction that vacuum drawn produces, by holding furnace
Alloy molten solution pumps in die casting machine holding furnace.During pumping, will not ingress of air and impurity, it is possible to protect
The quality of card alloy molten solution.
Thermal die casting machine is finally used to carry out hot type die casting.The alloy molten solution temperature controlled in die casting machine holding furnace exists
550～600 DEG C, alloy molten solution is inputted after compression mod carries out die casting and get product.Suitably temperature controls is aluminum
The key factor that base alloying component controls.The mobility good in order to ensure aluminium alloy, die casting machine holding furnace
Interior alloy temperature is set in 550～600 DEG C.Thin-wall part, Complex Parts cast temperature capping；Heavy section casting, letter
Single-piece removes the limit.In press casting procedure, require to set press casting procedure parameter according to quality of die casting, by pressure
The regulation of casting machine technical parameter, it is thus achieved that required than technological parameters such as pressure, injection speed, shot time.By right
Design of Dies adjusts the technological parameter such as filling speed, mould temperature.Extrusion process is not had by the hot type die casting in the present invention
There is particular/special requirement, can realize with aluminum alloy die-casting technological according to existing, herein this not repeated.
Use aluminum-based alloy product that hot type extrusion process manufactures than former aluminum-based alloy product at the bar of constancy of volume
Weight saving 7-10% under part, cost reduces about 13%.The acieral using this extrusion process to prepare produces
The various metallic elements of product can be sufficiently mixed, and segregation-free phenomenon has good corrosion resistance and dicoration
Energy.
Above one embodiment of the present of invention is described in detail, but described content has been only the preferable of the present invention
Embodiment, it is impossible to be considered the practical range for limiting the present invention.All according to the present patent application scope made equal
Deng change and improvement etc., within all should still belonging to the patent covering scope of the present invention.
Claims (4)
1. an aluminium alloy smelting extrusion process, it is characterised in that this technique is realized by following step:
A. alloy melting: first by central authorities' smelting furnace preheating, add aluminum copper-manganese or magnalium copper metal melt, obtain alloy
Liquation；
B. electromagnetism convection agitation: alloy molten solution is transferred in holding furnace, temperature controls at 670-690 DEG C,
Applying electromagnetic field bottom holding furnace, alloy solution produces inductive loop；
C. alloy molten solution gas is got rid of: being passed through dry chlorine by graphite-pipe in aluminium alloy, the time of process exists
About 5-6 minute, the when of process, molten being good for be closed, after process, the temperature of alloy molten solution be carried
High to 690-750 DEG C；
D. vacuum filler: using vacuum to manufacture device will get rid of the alloy solution of gas in die casting；
E. hot type die casting: alloy molten solution, at 550-650 DEG C, is poured into die casting and enters by control alloy molten solution temperature
Get product after row die casting.
Aluminium alloy smelting extrusion process the most according to claim 1, its alloy be aluminum manganin or
Aluminium magnesium copper alloy.
Aluminium alloy smelting extrusion process the most according to claim 1, it is characterised in that described step b
In, during carrying out electromagnetization stirring, utilize heater that alloy molten solution is preheated, keep closing
Gold temperature is 550-600 DEG C.
Aluminium alloy smelting extrusion process the most according to claim 1, it is characterised in that use at evacuation
Reason carries out feed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610320099.2A CN105861868A (en) | 2016-05-12 | 2016-05-12 | Smelting and die-casting process for aluminum alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610320099.2A CN105861868A (en) | 2016-05-12 | 2016-05-12 | Smelting and die-casting process for aluminum alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105861868A true CN105861868A (en) | 2016-08-17 |
Family
ID=56630998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610320099.2A Pending CN105861868A (en) | 2016-05-12 | 2016-05-12 | Smelting and die-casting process for aluminum alloy |
Country Status (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108048670A (en) * | 2018-01-31 | 2018-05-18 | 福建奋安铝业有限公司 | A kind of smelting equipment of the founding aluminium bar of aluminium profiles timber-used |
| CN110125362A (en) * | 2019-05-17 | 2019-08-16 | 宁波图冠精密模具有限公司 | A kind of food tray shell die casting and die-casting process |
| CN113770299A (en) * | 2021-09-18 | 2021-12-10 | 厦门冠裕金属制品有限公司 | Production process of non-ferrous metal alloy casting |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4754799A (en) * | 1987-02-11 | 1988-07-05 | Robinson Ronald K | Process for die-casting aluminum alloys of low iron and high aluminum content |
| CN101073823A (en) * | 2007-06-19 | 2007-11-21 | 包启全 | High-aluminium and zinc based melting press-casting process |
| CN103160719A (en) * | 2013-04-02 | 2013-06-19 | 慈溪市宜美佳电器有限公司 | T66 aluminum alloy material and production process thereof |
| CN105112736A (en) * | 2015-09-07 | 2015-12-02 | 苏州凯宥电子科技有限公司 | Die-cast aluminum alloy and preparing method thereof |
-
2016
- 2016-05-12 CN CN201610320099.2A patent/CN105861868A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4754799A (en) * | 1987-02-11 | 1988-07-05 | Robinson Ronald K | Process for die-casting aluminum alloys of low iron and high aluminum content |
| CN101073823A (en) * | 2007-06-19 | 2007-11-21 | 包启全 | High-aluminium and zinc based melting press-casting process |
| CN103160719A (en) * | 2013-04-02 | 2013-06-19 | 慈溪市宜美佳电器有限公司 | T66 aluminum alloy material and production process thereof |
| CN105112736A (en) * | 2015-09-07 | 2015-12-02 | 苏州凯宥电子科技有限公司 | Die-cast aluminum alloy and preparing method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108048670A (en) * | 2018-01-31 | 2018-05-18 | 福建奋安铝业有限公司 | A kind of smelting equipment of the founding aluminium bar of aluminium profiles timber-used |
| CN108048670B (en) * | 2018-01-31 | 2019-06-28 | 福建奋安铝业有限公司 | A kind of smelting equipment of the founding aluminium bar of aluminum profile |
| CN110125362A (en) * | 2019-05-17 | 2019-08-16 | 宁波图冠精密模具有限公司 | A kind of food tray shell die casting and die-casting process |
| CN113770299A (en) * | 2021-09-18 | 2021-12-10 | 厦门冠裕金属制品有限公司 | Production process of non-ferrous metal alloy casting |
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Application publication date: 20160817 |