CN1942265A - Magnesium alloy and methods for making - Google Patents
Magnesium alloy and methods for making Download PDFInfo
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- CN1942265A CN1942265A CN 200580011716 CN200580011716A CN1942265A CN 1942265 A CN1942265 A CN 1942265A CN 200580011716 CN200580011716 CN 200580011716 CN 200580011716 A CN200580011716 A CN 200580011716A CN 1942265 A CN1942265 A CN 1942265A
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Abstract
In a method for making a cast product by squeeze casting using an AZ91D alloy, the AZ91D alloy is heated to a liquid state, a shot sleeve is filled with the liquid AZ91D alloy, and a seal is formed between the shot sleeve and a die. In addition, the liquid alloy is injected into the die with an injection unit at a pressure of greater than about 69 Mega Pascal (Mpa) and a gate velocity of less than about 500 millimeters per second (mm/sec) and the AZ91D alloy is solidified in the die to generate the cast product.
Description
Priority request
The present invention requires to be called in application on September 28th, 2004, name the U.S. Patent application No 10/950 of " magnesium alloy and manufacture method thereof ", the priority of 491 (this patent application is a part continuation application), and requirement is called the U.S. Provisional Patent Application No 60/552 of " magnesium alloy and manufacture method thereof " in application on March 15th, 2004, name, 708 priority is incorporated herein by reference at this full text with described patent application.
Technical field
Present invention relates in general to cast a kind of magnesium alloy.More particularly, the present invention relates to be used to cast the method and system of AZ91D magnesium alloy.
Background technology
Some automobile component is usually by traditional casting die---for example Hpdc method (" HPDC ")---, and the aluminium alloy of manufacturing forms.HPDC is suitable for making thin-wall member.The HPDC member may have the unfavorable hole that causes because of turbulent flow and solidification shrinkage, and this makes these members be unsuitable for as the heavy wall member.The porosity that the HPDC member also may present disadvantageous skin effect, wherein the skin of member---perhaps top layer---is less, but the degree of the porosity of member remainder is unacceptable, and the microstructure of its expression member under the top layer worsens.Hole can cause adverse effect to the plasticity or the ductility of member, thereby makes that member is unsuitable for being utilized, and is particularly like this in automobile component.At present, the heavy wall member can be by the 380 or 383 aluminium alloy manufacturings of making by HPDC.
Summary of the invention
The present invention has satisfied above-mentioned requirement on sizable degree, wherein in some embodiments, and the system and method that not only light but also firm cast article is provided and has been used to make this cast article.
An embodiment of the invention relate to and a kind ofly are used to adopt the AZ91D alloy to make the method for cast article by extrusion casint.In the method, the AZ91D alloy is heated to liquid state, shot sleeve is filled with the AZ91D alloy of liquid state and formation sealing between shot sleeve and mould.In addition, liquid alloy injects in the mould with the gate velocity less than about 500mm per second (" mm/sec ") under greater than the pressure of 69 MPas (MPa) by injecting unit, and the AZ91D alloy solidifies in mould to form cast article.
Another embodiment of the invention relates to the cast article that a kind of AZ91D of employing alloy is made by Extrution casting technique.Described cast article comprises: 8.5% to 9.5% aluminium; 0.17% to 0.40% manganese; 0.45% to 0.9% zinc; 0% to 0.015% copper; About silicon of 0% to 0.05%; About nickel of 0% to 0.001%; About iron of 0% to 0.004%; Respectively be one or more other metals of about 0% to 0.01%; Remaining is magnesium.In addition, the gate size of making the equipment of cast article be about 3 millimeters (mm) to about 10 millimeters * about 3 millimeters (mm) to about 10 millimeters, and the yield strength of cast article under untempered state is from about 100 MPas (MPa) to about 160Mpa, hot strength be from about 150MPa to about 230Mpa, and percentage elongation is about 2%.
Another embodiment more of the present invention relates to a kind of AZ91D of employing alloy is made cast article by extrusion casint equipment.Described equipment comprises: the AZ91D alloy is heated to liquid device; Fill the device of shot sleeve with the AZ91D alloy of liquid state; And the device that is used between shot sleeve and mould, forming sealing.In addition, described equipment comprise be used to make liquid alloy under greater than the pressure of about 69 MPas (MPa) to inject the device in the mould less than the gate velocity of about 500 millimeters per seconds (" mm/sec ") and to be used to make the AZ91D alloy in mould, to solidify device with the formation cast article.
Thereby, quite broadly described some embodiment of the present invention, thereby can understand detailed description better, and the present invention may be better understood to the contribution of prior art described embodiment.Certainly, there is other embodiment in the present invention, will be described it hereinafter, and described embodiment will form the theme of claims.
Aspect this, before at length explaining at least one embodiment of the present invention, be to be understood that: application of the present invention be not limited to hereinafter description or appended accompanying drawing in the detailed structure that provides and the setting of member.The present invention can implement in the mode different with described embodiment, and can put into practice by different way and carry out.Simultaneously, it should also be understood that: the word and the term that use in this paper and the summary are to be used for purpose of description, and not will be understood that it is restrictive.
Therefore, those skilled in the art are understood that the notion as basis of the present disclosure can easily be used as other mechanism of design, method and system to realize the basis of several purposes of the present invention.Therefore, importantly, claim is believed to comprise the equivalent structure that does not depart from spirit of the present invention and category.
Description of drawings
Fig. 1 is for equipping according to the vertical extrusion casint of the level that is suitable for the extrusion casint alloy of one embodiment of the present invention;
Fig. 2 among Fig. 1 according to the detailed view of the equipment that is suitable for the extrusion casint alloy of one embodiment of the present invention;
Fig. 3 is the vertical extrusion casint equipment that is suitable for the extrusion casint alloy according to one embodiment of the present invention;
Fig. 4 is a photo, and it illustrates the alloy of being made by traditional high pressure diecasting;
Fig. 5 is a photo, and it illustrates the cast article of being made by the foundation embodiments of the present invention;
Fig. 6 is a flow chart, and the method that is suitable for producing cast article according to one embodiment of the present invention is shown.
The specific embodiment
The present invention provides a kind of AZ91D of employing alloy in some embodiments, has made the method for cast article by extrusion casint, cast article is provided and the system that is used to make cast article is provided.
AZ91D is a kind of magnesium alloy, and it comprises: 8.5% to 9.5% aluminium; At least 0.17% manganese; 0.45% to 0.9% zinc; 0.015% copper at the most; 0.05% silicon at the most; 0.001% nickel at the most; 0.004% iron at the most; Respectively be one or more other metals of 0.01% at the most; Remaining is magnesium.
This term of extrusion casint is used for describing and a kind ofly imports in the mould liquid or semi-solid metal and the technology of in mould alloy being pressurizeed.Extrusion casint comprises with respect to the advantage of conventional die castings method: few to the turbulent flow that does not have, few to the gas that does not have be detained, shrinkage porosity minimizing and solidify more rapid.Extrusion casint also provides the size Control suitable with HPDC.
Extrusion casint is suitable for making various members.Especially, heavy wall member or thickness are approximately 2.5mm or thicker member is benefited because make in various extrusion casting apparatus.In addition, compare with traditional casting method, the skin effect of extrusion casint is less or do not have skin effect (skineffect), causes the globality of member to improve and the porosity minimizing.That is to say, extrusion casint makes metal can have the difficult quality that realizes by traditional die casting, the permanent die casting of gravity (gravity permanentmold) or sand casting, and comprising does not have hole or hole minimizing, mechanical integrity raising, mar proof raising and can carry out solution-treated.
The example of extrusion casting apparatus comprises: the vertical extrusion casint of level (" HVSC "), vertical Casting Equipment or the like.The HVSC equipment so reason of address is: die clamp is flatly opened and the alloy of fusion adds vertically.In vertical Casting Equipment, die clamp is opened vertically and the alloy of fusion also adds vertically.In addition, extrusion casting apparatus has many kinds of modification, variation and structures.Have some to be described in this article during these change, yet all equipment that are suitable for extrusion casint all drop in the category of the present invention.
The member of making in extrusion casting apparatus stands various optional casting post processings.These selectable process comprise one or many roll compacting, polishing, chemistry and heat treatment or the like.In a specific example, if necessary, member is through Overheating Treatment, to strengthen some performance, the especially plasticity of cast construction.More specifically, general---for example T6 tempering, T4 tempering etc.---are improved the metallurgical performance of the product of producing by extrusion casint (squeeze casting) by various heat treatments.
Fig. 1 is the vertical extrusion casint of the level that is used for the extrusion casint alloy (" the HVSC ") equipment according to one embodiment of the present invention.As shown in Figure 1, extrusion casint equipment 10 comprises die clamp 12, induction system 14 and holding furnace 16.
Die clamp 12 comprises actuator 18, clamp 20, pressing plate 22, tie-rod 24, end plate 26 and mould 28.Thereby actuator 18 is configured to apply a power on 20 and make mould 28 engage and separately clamping.Aspect this, mould 28 comprises the subelement of a pair of cooperation, and described subelement is configured to be engaged with each other and forms a die cavity 30.As described herein, liquid alloy imports in this die cavity 30 to produce a cast article.Unceasingly, pressing plate 22 is configured to help to distribute the power that is applied by actuator 18.Tie-rod 24 is fixedly attached on the end plate 26 and is configured to provides structural integrity to die clamp 12.Tie-rod 24 also provides guide member, thereby pressing plate 22 is supported on the correct alignment that helps mould 28 on this guide member.
Induction system 14 comprises injecting unit 32 and cylinder 34.Injecting unit 32 comprises suitable actuator or other similar equipment arbitrarily, and these actuators or similar devices can turn round and produce enough power, thereby are injected in the die cavity 30 with the alloy of desired pressure with liquid state or semi liquid state.In addition, injecting unit 32 is configured to speed or the gate velocity injection alloy with appointment.In a special example, injecting unit 32 comprises hydraulic system 36, and this hydraulic system is configured to air-leg 38 is driven.As shown in Figure 1, air-leg 38 places of working are attached to cylinder 34, thereby force alloy to enter in the die cavity 30 from cylinder 34.Aspect this, it is the close sealing of liquid basically that cylinder 34 is configured to cooperate and form one with mould 28 with mould 28.In addition, cylinder 34 comprises various heating, cooling and sensing apparatus alternatively.
Holding furnace 16 is configured to the main body of liquid metal alloy is remained on the predetermined temperature.Holding furnace 16 is configured to metal alloy is heated to liquid state alternatively.
Fig. 2 is the simplified cross-sectional view according to the extrusion casint equipment 10 of another embodiment.It is 10 similar that the extrusion casint of Fig. 2 equipment 10 and the extrusion casint of Fig. 1 are equipped, thereby, for the purpose of simple, will no longer the element of describing among Fig. 1 be described.As shown in Figure 2, mould 28 separates to remove cast article 40.Cast article 40 is roughly corresponding with die cavity 30.According to embodiments of the present invention, cast article 40 is light and the cast article with traditional is the same firm at least.Aspect this, cast article 40 comprises AZ91D, and this alloy is lighter than normally used aluminium alloy because it comprises the component of magnesium.In addition, because extrusion casint, so, to compare with traditional cast article, the globality of cast article 40 is better.Therefore, the cast article according to the embodiments of the present invention manufacturing is suitable for replacing various traditional cast articles.Especially, can easily replace the aluminum cast product of heavy wall---be that wall thickness is the product of 10mm to 14mm.The specific examples of the heavy wall aluminium casting product of easily being replaced by the magnesium alloy AZ91D of extrusion casint comprises: axle carrier, protecgulum, back shaft-cup, Engine frame or the like.
Also illustrate among Fig. 2, injecting unit 32 belongs to the type of docking towards obliquely along filling.That is to say that injecting unit 32 tilts, make that liquid alloy can be so that the mode that turbulent flow reduces be injected in the shot sleeve 44 from transferring case 42.Aspect this, reduce the porosity that turbulent flow has reduced cast article 40 usually.As shown in arrow 46, injecting unit 32 up tilts, to be prepared as die cavity 30 injection alloys.The extrusion casint equipment 10 that is shown among Fig. 1 and 2 shows a kind of " HVSC " equipment.Yet in another embodiment, the extrusion casint equipment also can be the equipment that mould 28 is opened vertically.
Fig. 3 is the simplified cross-sectional view according to the extrusion casint equipment 10 of another embodiment.It is 10 similar that the extrusion casint of Fig. 3 equipment 10 and the extrusion casint of Fig. 1 and 2 are equipped, thereby, for the purpose of simple, will no longer those elements of describing among Fig. 1 and 2 be described.As shown in Figure 3, thus mould 28 operate vertically in the classification that broadly is included into vertical extrusion casint equipment.The special example that is suitable for being applied in the vertical extrusion casint equipment in the various embodiments of the present invention comprises those THT Presses companies by U.S.'s Dayton at least, and (Dayton, OH 45414, the vertical extrusion casint equipment of U.S.A) making.
Fig. 4 shows a cross section of the cast article of being made by traditional HPDC technology 48, and it shows skin effect.As shown in Figure 4, compare with the body 52 of cast article 48, the hole on the top layer 50 of cast article 48 is less relatively.This skin effect causes the reduction of conventional cast product 48 mechanical performances usually, and, when cast article 48 is carried out further machining special trouble.Aspect this, when cast article 48 was carried out machining, top layer 50 may be removed, thereby and the more weak body 52 of more hole be exposed.
Fig. 5 is the stereogram according to the cast article 54 of one embodiment of the present invention manufacturing.As shown in Figure 5, cast article 54 is one stair-stepping, and it includes step 56-62.The thickness of step 56-62 is different.In a special example, the thickness of step 56-62 is respectively 2,6,10 and 14mm.In addition, cast article 54 is half-and-half sectioned to show inner surface 64.Inner surface 64 is checked to determine the metallurgical performance of alloy at step 56-62 place.According to an embodiment, to compare with traditional cast article, the lower and metallurgical performance of the porosity of the cast article of making by methods described herein improves.
Outside thickness and temperature, a plurality of other parameters can change, for example injection pressure, gate velocity, alloy temperature or the like.According to an embodiment, the injection pressure that is used for making cast article is 69 MPas (" MPa ") or bigger.More particularly, injection pressure is 70 to 100Mpa.In addition, according to an embodiment, gate velocity is equal to or less than 500mm per second (" mm/sec ").
Surprising, by casting method of the present invention, wall thickness does not influence tensile property significantly.That is, the tensile property of the heavy wall member of making by extrusion casint is good surprisingly, and unlike the poor performance of thin-wall member, and this situation occurs in the alloy of making by HPDC.
According to method disclosed herein, extrusion casint makes that the plasticity of member is stronger, tensile property better and mar proof is higher.These improved performances are at least in part because the microstructure that has reduced porosity and improved member by extrusion casint causes.
Can comprise by the automobile component of the inventive method manufacturing: crossbeam, control arm, knuckle, piston, Engine frame, screw compressor, wheel, axle carrier, vehicle bridge lid, valve casing, steering column mounting and crank boss.
The example of the tensile property of the cast article 54 that is produced by the inventive method is as follows:
Form 1
| Position and thickness | Gate size | Yield strength (MPa) | Hot strength (MPa) | Zhongchang rate (%) |
| Step 62 (14mm) | 6.35mm× 6.07mm | 115 | 168 | 2.0 |
| Step 60 (10mm) | 6.35mm× 6.07mm | 117 | 178 | 2.0 |
| Step 58 (6mm) | 6.35mm× 6.07mm | 118 | 171 | 2.0 |
According to the public data for the extrusion casint alloy, the result shown in the form 1 is unexpected.The expectation yield strength be 104+/-4Mpa.According to disclosed NRC data, The above results also is unexpected.According to NRC, the yield strength of expectation be 105+/-6Mpa.Also surprisingly, the thickness of wall is to not obviously influence of mechanical performance.
By the inventive method, comprise that the example of tensile property of the cast article 54 that the T6 tempering heat treatment is produced is as follows:
Form 2
| Position and thickness | Gate size | Yield strength (Mpa) | Hot strength (MPa) | Percentage elongation (%) |
| Step 62 (14mm) | 6.4mm× 5.97mm | 135 | 210 | 2.0 |
| Step 60 (10mm) | 6.4mm× 5.97mm | 140 | 199 | 2.0 |
| Step 58 (6mm) | 6.4mm× 5.97mm | 139 | 196 | 2.0 |
According to for the public data at AZ91 through the T6 temper, the result shown in the form 2 is unexpected.By sand casting form and through the expectation yield strength of the AZ91 of T6 temper be 118+/-2.8Mpa.Surprising also have: the thickness of wall is to not significantly influence of mechanical performance.
The inventive method has been made a kind of AZ91D magnesium alloy, and it has surprising performance as shown in the table.
Form 3
| Alloy-tempering | Technology | Yield strength (Mpa) | Hot strength (MPa) | Percentage elongation (%) |
| 380-F | HPDC | 130-155 | 172-185 | 1.2-1.4 |
| 380-F | Extrusion casint | 138-159 | 227-245 | 2-3 |
| 380-F | SSM(SLC TM) | 131-152 | 241-255 | 2-4 |
| 383-F | HPDC | 145 (on average) | 200 (on average) | (1.25 on average) |
| AZ91D-F | Extrusion casint | 115-118 | 168-178 | (2.0 on average) |
| AZ91D-T6 | Extrusion casint | 135-140 | 196-210 | (2.0 on average) |
| AZ91D-T4 | Extrusion casint | 92-101 | 228-247 | 7.0-11.0 |
SLC in the form 3
TMRefer to inferior liquid phase casting (sub-liquidus casting), a kind of semi-solid cast form wherein forms slurry in shot sleeve.Its trade mark holder is the THT company in Ohio, USA Dayton city.
Shown in data in the form 3, (promptly there is not temper with AS91D-F; Member is in " during casting " state) compare, provide unexpected yield strength and hot strength by the AZ91D through the T6 temper of extrusion casting method manufacturing of the present invention.In addition, by extrusion casting method manufacturing of the present invention can be comparable through the yield strength that AZ91D provided, hot strength and the percentage elongation of T6 temper with 380 and 383 aluminium alloys that are commonly used to make the heavy wall member, but globality is improved, and evidence is to have obtained less porosity by extrusion casint.
Also illustrate by the data in the form 3, through the hot strength of the extrusion casint AZ91D of T4 temper magnesium alloy and plasticity much larger than 380HPDC.In addition, though relative 380HPDC reduces through the yield strength of the AZ91D of T4 temper, the adverse effect that it can be the favorable substitutes of the HPDC that makes with magnesium alloy (being AM60 or AM50) that above-mentioned data mean really through the extrusion casint AZ91D of T4 temper, and HPDC is subjected to whole mechanical integrity usually---for example skin effect, hole or the like---.
The property second month in a season of drawing that also must be noted that: the alloy of listing in the literature---especially AZ91D---can be made comparisons with institute's data of testing report in this article.The tensile property of listing in the literature is to record under multiple different state.Disclosed stretching data are based on (described test specimen has different shapes and solidification rate and other discrimination factor) that the independent tensile test specimen of casting is made, and the data of being reported in this article are based on actual tool member.As those skilled in the art understand, be supposition to the tensile property of machining member based on the open stretching data of independent casting tensile test specimen.With by other foundry engieering---for example HPDC---AZ91D of processing compares, AZ91D by extrusion casint processing presents the tensile property that has been improved unexpectedly.
Fig. 6 is the flow chart of method 70 that is suitable for producing cast article according to one embodiment of the present invention.Before start method 70, can carry out a plurality of steps in advance so that implementation method 70.During these steps can may further comprise the steps some or all (not having specific order): design a kind of cast article; Product based on design and structure comes designing mould; Mould is assembled in the extrusion casint equipment 10; Supply AZ91D alloy and/or acquisition AZ91D alloy components; To the extrusion casint equipment supply energy, and make each heating element heater obtain operating temperature, or the like.
At step 72 place, the start method 70 by the AZ91D alloy being heated to the temperature that is enough to make metal liquefaction.Usually, the condensing temperature of AZ91D is approximately 1105 or 595 ℃.Usually, alloy is heated to and surpasses this temperature slightly, to allow and to contact than cool surface relatively and can not make alloy graining.Therefore, casting temperature is to about 1290 (700 ℃) from about 1160 (625 ℃).
At step 74 place, fill shot sleeve 44.For example, injecting unit 32 tilts to accept liquid alloy from transferring case 42 or other this transmission equipment or conduit.In addition, before filling, shot sleeve 44 can be ready to receive liquid alloy.For example, air-leg 38 regractings in the shot sleeve 44 and/or can regulate to the temperature of shot sleeve 44.
At step 76 place, between shot sleeve 44 and mould 28, form sealing.For example, mould 28 is clamped on the shot sleeve 44 by the effect of die clamp 12.In another example, shot sleeve 44 is inserted in the recessed portion of mould 28, is the close sealing of liquid basically to form one between shot sleeve 44 and mould 28.
At step 78 place, liquid alloy is injected in the die cavity 30.According to an embodiment of the invention, liquid alloy is injected in the die cavity 30 with the gate velocity less than about 500mm per second (" mm/sec ") under greater than the injection pressure of 69 MPas (MPa) by injecting unit.Lower gate velocity is easy to make that the formation of turbulent flow minimizes, and this can reduce the porosity of cast article.Described pressure also can compress the porosity that reduces cast article by all are detained gas.In addition, described pressure makes liquid alloy be easy to move in the recessed portion that is present in the die cavity 30.
At step 80 place, liquid alloy solidifies in die cavity 30.For example, heat is conveyed in the surrounding environment through mould 28.In addition, can construct the temperature that a cooling system reduces mould 28.Thus, liquid alloy solidifies and produce cast article 40.
At step 82 place, cast article 40 is removed from die cavity 32.For example, control actuator 22 is with divided mould 30, and cast article is withdrawn from and/or released outside the mould 30.At this moment, cast article 40 also comprises some unwanted materials usually---slag for example.Remove described unwanted material and/or cast article 40 is processed, as described.
At step 84 place, alternatively, cast article 40 is heat-treated.For example, cast article 40 is carried out T4 or T6 temper.Heat treatment increases the intensity of cast article usually and/or improves the material behavior of cast article.After step 82 or 84, extrusion casint equipment 10 can stop, up to receiving the instruction of producing another cast article 40.
From detailed description, can learn many feature and advantage of the present invention significantly, thereby, claims intentions cover of the present invention all drop on feature and advantage within practical matter of the present invention and the category.Further, because those skilled in the art can easily envision many modifications and change, so the present invention is limited in the concrete structure and operation of shown and description, therefore, all suitable modifications and equivalent all drop in the category of the present invention.
Claims (24)
1. one kind is adopted the AZ91D alloy to make the method for cast article by extrusion casint, and described method comprises:
The AZ91D alloy is heated to liquid state;
Fill shot sleeve with this liquid state AZ91D alloy;
Between described shot sleeve and mould, form sealing;
With gate velocity described liquid alloy is injected in the described mould under by injecting unit greater than the pressure of about 69 MPas (MPa) less than about 500 millimeters per seconds (mm/sec); And
The AZ91D alloy is solidified to form described cast article in described mould.
2. the method for claim 1 further comprises:
Described cast article is removed from described mould.
3. the method for claim 1 wherein forms sealing and further comprises:
Adopt anchor clamps that described shot sleeve is clipped in the described mould.
4. the method for claim 1, wherein said pressure is between 70Mpa and 100Mpa.
5. the method for claim 1, wherein said gate velocity is between 100mm/sec and 500mm/sec.
6. method as claimed in claim 5, wherein said gate velocity is between 300mm/sec and 500mm/sec.
7. the method for claim 1 further comprises:
Described cast article is heat-treated.
8. method as claimed in claim 7, wherein said heat treatment are the T4 tempering.
9. method as claimed in claim 7, wherein said heat treatment are the T6 tempering.
10. cast article that adopts the AZ91D alloy to make by Extrution casting technique, this cast article comprises:
8.5% to 9.5% aluminium;
0.17% to 0.40% manganese;
0.45% to 0.9% zinc;
About copper of 0% to 0.015%;
About silicon of 0% to 0.05%;
About nickel of 0% to 0.001%;
About iron of 0% to 0.004%;
Respectively be one or more other metals of about 0% to 0.01%; And
Remaining is magnesium, and wherein, the equipment of making described cast article comprises cast gate, described cast gate be of a size of about 3 millimeters (mm) to about 10 millimeters * about 3 millimeters (mm) are to about 10 millimeters, and described cast article is under untempered state:
Yield strength is to about 160Mpa from about 100 MPas (MPa);
Hot strength is to about 230Mpa from about 150MPa; And
Percentage elongation is about 2%.
11. cast article as claimed in claim 10, the gate velocity of the equipment of wherein said manufacturing cast article is between about 300 millimeters per seconds (mm/sec) with approximately between the 500mm/sec.
12. cast article as claimed in claim 11, the thickness of wherein said cast article is between about 3mm with approximately between the 20mm.
13. cast article as claimed in claim 12, the gate size of the equipment of wherein said manufacturing cast article are 6.35 millimeters (mm) * 6.07mm, and are in the cast article in the Annealed Strip not:
Yield strength is to 118Mpa from 115 MPas (MPa);
Hot strength is from 168MPa to 171Mpa; And
Percentage elongation is about 2%.
14. cast article as claimed in claim 12, the gate size of the equipment of wherein said manufacturing cast article are 6.4mm * 5.97mm, and the cast article after the T6 temper:
Yield strength is to 140Mpa from 135 MPas (MPa);
Hot strength is from 196MPa to 210Mpa; And
Percentage elongation is about 2%.
15. cast article as claimed in claim 10, wherein said cast article comprise at least a in axle carrier, protecgulum, back shaft-cup and the Engine frame.
16. one kind is adopted the AZ91D alloy to make the equipment of cast article by extrusion casint, described equipment comprises:
Be used for the AZ91D alloy is heated to liquid device;
Be used for filling the device of shot sleeve with the AZ91D alloy of liquid state;
Be used between described shot sleeve and mould, forming the device of sealing;
Be used to make described liquid alloy under greater than the pressure of about 69 MPas (MPa) to inject the device in the described mould less than the gate velocity of about 500 millimeters per seconds (mm/sec); And
Be used to make the AZ91D alloy in described mould, to solidify to form the device of cast article.
17. equipment as claimed in claim 16 further comprises:
Be used for device that cast article is removed from described mould.
18. equipment as claimed in claim 16 wherein forms sealing and further comprises:
Be used for described shot sleeve being clipped in device in the described mould by anchor clamps.
19. equipment as claimed in claim 16, the wherein said device construction that is used to inject becomes to apply the pressure between 70Mpa and 100Mpa.
20. equipment as claimed in claim 16, the wherein said device construction that is used to inject becomes to inject described liquid alloy with the gate velocity between 100mm/sec and 500mm/sec.
21. equipment as claimed in claim 20, the wherein said device construction that is used to inject becomes to inject described liquid alloy with the gate velocity between 300mm/sec and 500mm/sec.
22. equipment as claimed in claim 16 further comprises:
Be used for device that described cast article is heat-treated.
23. equipment as claimed in claim 22 further comprises:
Be used to carry out the device of T6 tempering.
24. equipment as claimed in claim 22 further comprises:
Be used to carry out the device of T4 tempering.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US55270804P | 2004-03-15 | 2004-03-15 | |
| US60/552,708 | 2004-03-15 | ||
| US10/950,491 | 2004-09-28 |
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| CN1942265A true CN1942265A (en) | 2007-04-04 |
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| CN 200580011716 Pending CN1942265A (en) | 2004-03-15 | 2005-03-08 | Magnesium alloy and methods for making |
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| CN105798256A (en) * | 2014-12-30 | 2016-07-27 | 北京有色金属研究总院 | Semisolid die casting forming process for high-strength aluminum alloy steering knuckle |
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| CN101804453A (en) * | 2009-12-23 | 2010-08-18 | 常州市蓝托金属制品有限公司 | Production process of ultrathin-wall and leakage-free aviation aluminium alloy castings |
| CN101804453B (en) * | 2009-12-23 | 2012-06-27 | 常州市蓝托金属制品有限公司 | Production process of ultrathin-wall and leakage-free aviation aluminium alloy castings |
| CN102937235A (en) * | 2012-09-22 | 2013-02-20 | 狄石磊 | Magnesium alloy load-carrying structure plate and manufacturing method thereof |
| CN103212690A (en) * | 2013-05-14 | 2013-07-24 | 滨州东海龙活塞有限公司 | Extruding and casting method of internal combustion engine aluminum piston |
| CN105798256A (en) * | 2014-12-30 | 2016-07-27 | 北京有色金属研究总院 | Semisolid die casting forming process for high-strength aluminum alloy steering knuckle |
| CN110241343A (en) * | 2019-06-24 | 2019-09-17 | 哈尔滨理工大学 | A kind of heat resistance magnesium alloy, a kind of engine cylinder cover and preparation method thereof |
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