CN1798857A - Method for producing magnesium base alloy formed article - Google Patents
Method for producing magnesium base alloy formed article Download PDFInfo
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- CN1798857A CN1798857A CNA2004800151311A CN200480015131A CN1798857A CN 1798857 A CN1798857 A CN 1798857A CN A2004800151311 A CNA2004800151311 A CN A2004800151311A CN 200480015131 A CN200480015131 A CN 200480015131A CN 1798857 A CN1798857 A CN 1798857A
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- magnuminium
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- base alloy
- temperature
- magnesium base
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/06—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of magnesium or alloys based thereon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
- B21J1/02—Preliminary treatment of metal stock without particular shaping, e.g. salvaging segregated zones, forging or pressing in the rough
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C23/00—Alloys based on magnesium
- C22C23/02—Alloys based on magnesium with aluminium as the next major constituent
Abstract
A method for producing a magnesium base alloy formed article characterized in that it comprises preparing a material in a wire form by the drawing of a magnesium base alloy and subjecting the material in a wire form to plastic working at a temperature less than 250 DEG C. The drawing forms a finer alloy structure, which results in the improvement in the workability of the plastic working at a temperature less than 250 DEG C. The types of the plastic working include forging, swaging and bending. The method allows the production of a plastically worked article comprising a magnesium base alloy with good productivity.
Description
Technical field
The present invention relates to be used for containing the method for the molding of Magnuminium by the plastic working manufacturing.Particularly, the processing temperature when relating to further reduction and carrying out plastic working, the manufacture method of the magnesium base alloy formed article that productivity is good.
Background technology
Magnuminium is lighter than aluminium, and specific tenacity, specific rigidity are widely used in the fuselage of aviation machine part, trolley part etc. and other various electric products etc. also than steel or aluminium excellence.
But, because Mg and alloy thereof are hexagonal close packed lattice (hcp) structures, lack ductility, the plastic working extreme difference, but well-known, Magnuminium is adding man-hour, becomes good by improving the temperature processibility.For example, opening 2000-283134 communique, spy the spy opens and has put down in writing the technology of carrying out screw thread (ネ ジ) processing under the state of temperature that makes magnesium base alloy material show the superplasticity phenomenon in the 2000-343178 communique.
But, when Magnuminium is carried out plastic working, because the temperature of the above-mentioned superplasticity phenomenon of generation is the so-called high temperature more than 250 ℃ or 250 ℃, therefore, in method in the past, the problem of the formed body that adopts plastic working can not productivity be made in existence excellently.
In the past, for the formed body that obtains containing Magnuminium carries out such the forcing man-hour of plastic working, though also depend on degree of finish, will roughly be heated to that to process more than 250 ℃ or 250 ℃ be necessary as the extruded material of the Magnuminium of machined material or rolled material.Therefore, the heating installation that need use at the high temperature more than 250 ℃ or 250 ℃ not only, and also because work materials such as the mould that uses in the plastic working, roller also are exposed among the high temperature, so lost of life causes cost to improve.Therefore, the heating more than 250 ℃ or 250 ℃ is preferred anything but in industrial production.
Therefore, the objective of the invention is to, the manufacture method of can productivity making the magnesium base alloy formed article of the plastic working formed body that contains Magnuminium is provided excellently.
Summary of the invention
Present inventors are for being difficult to carry out the such Magnuminium of forcing the worker of plastic working usually, carry out found that of various researchs, by using the magnesium base alloy material of having implemented specific drawing processing in advance, even the temperature that less than is 250 ℃, also can carry out plastic working, so that finished the present invention.
That is, the manufacture method of magnesium base alloy formed article of the present invention is characterised in that, will become formed body by the filament plastic working that contains Magnuminium that drawing processing obtains down for 250 ℃ in the processing temperature less than.
In the past, when the plastic working magnesium base alloy material obtains formed body,, can use extruded material or rolled material as machined material.But, in extruded material or rolled material, when carrying out plastic working, must be heated to the temperature more than 250 ℃ or 250 ℃, expect the reduction of processing temperature strongly.Therefore, the present invention is not extruded material or rolled material but by the thread like body that drawing processing obtains, reduces in processing temperature that by using promptly, 250 ℃ of less thaies particularly realize plastic working below 200 ℃ or 200 ℃.Like this, in the present invention, by using the filament of drawing processing, processing temperature in the time of can carrying out plastic working is set to 250 ℃ of less thaies, the heater means that does not need high temperature in the past to use, the life-span of work materials such as the mould that uses in the plastic working or roller can be prolonged, and productivity can be improved.Below, the present invention is described in more detail.
In the present invention,, can enumerate metal wire (thread like body), rhoptry, pipe etc. as the filament that contains Magnuminium.Section can be circular, also can be that rectangle or ellipticity etc. are non-circular, i.e. abnormity.
In the present invention, drawing processing can be enumerated, for example, when obtaining metal wire or rhoptry, be the heat-up rate that reaches processing temperature: 1 ℃/second～100 ℃/second, processing temperature: (more preferred below 150 ℃ or 150 ℃), degree of finish more than 50 ℃ or 50 ℃, below 200 ℃ or 200 ℃: with respect to 1 drawing processing (1 passage) is more than 10% or 10%, linear velocity: under 1m/ second or the condition of 1m/ more than second, drawing extruded material or rolled material.Can enumerate, for example, when obtaining managing, in the drawing temperature: more than 50 ℃ or 50 ℃, (more preferred more than 100 ℃ or 100 ℃ below 300 ℃ or 300 ℃, below 200 ℃ or 200 ℃, preferred especially more than 100 ℃ or 100 ℃, below 150 ℃ or 150 ℃), degree of finish: with respect to 1 drawing processing (1 passage) is more than 5% or 5%, (more than more preferred 10% or 10%, more than preferred especially 20% or 20%), for reaching the heat-up rate of drawing temperature: 1 ℃/second～100 ℃/second, drawing speed: under 1m/ second or the condition of 1m/ more than second, drawing extruded material or rolled material.By carrying out so specific drawing processing, can make the alloy structure miniaturization, particularly, can make the average crystallite particle diameter become 10 μ m or below the 10 μ m.And the present invention even Heating temperature is set to 250 ℃ of less thaies, also can improve plastic working, the formed body that can obtain expecting by the miniaturization of above-mentioned alloy composition.In addition, after the drawing processing, to the filament that obtains also can be heated to more than 100 ℃ or 100 ℃, below 300 ℃ or 300 ℃, more preferred temperature more than 150 ℃ or 150 ℃, more than 150 ℃, below 300 ℃ or 300 ℃.The miniaturization more of the crystal grain that this heating anneal causes for the recovery of the distortion that is imported by drawing processing and by the promotion of recrystallize is effective.Preferred about 5～20 minutes of the hold-time of this Heating temperature.
In the present invention,, can enumerate, for example, forge processing, swaged forging processing, bending machining etc. as plastic working.As plastic working, when forging, following temperature condition is suitable.That is, draft is set to r
1When %, processing temperature were set to T ℃, T satisfied 3r
1+ 150＞T 〉=3r
1+ 10 (20%≤r here,
1＜80%, T＜250 ℃).For example, draft r
1During=20 (%), Heating temperature T (℃) can be set to 250 ℃ of less thaies, particularly more than 70 ℃ or 70 ℃ and 210 ℃ of less thaies.It is that 20% forging adds man-hour that the extruded material of not implementing drawing processing or rolled material are carried out draft, if be not heated to the high temperature more than 210 ℃ or 210 ℃, will produce fracture etc., can not forge processing, on the other hand, when being set to above-mentioned high temperature, the lost of life of work materials such as mould or roller.In contrast, because the present invention uses drawable material,, can carry out draft and be 20% forging and add the Heating temperature in man-hour and be set to 210 ℃ of less thaies, thereby can prolong the life-span of work materials such as mould or roller more by the fine effect of alloy structure.Carry out draft r
1Surpass for 33% the man-hour that adds, the lower limit of Heating temperature is set to use above-mentioned 3r
1+ 10 values of trying to achieve, the upper limit of Heating temperature is considered life-span of mould or roller etc. to be set to 250 ℃ of less thaies.Therefore, in the present invention, when carrying out surpassing 40% plastic working, even 250 ℃ of processing temperature less thaies also can fully be forged processing as the draft of industrial effective processing.At draft is forcing among the worker more than 80% or 80%, preferred heating more than 250 ℃ or 250 ℃.
As plastic working, when carrying out swaged forging processing, following temperature condition is suitable.That is, the section decrement is set to r
2When %, processing temperature were set to T ℃, T satisfied 3r
2+ 150＞T 〉=3r
2-30 (20%≤r here,
2≤ 80%, T＜250 ℃).For example, section decrement r
2=20% o'clock, Heating temperature T (℃) can be set to 250 ℃ of less thaies, particularly more than 30 ℃ or 30 ℃, 210 ℃ of less thaies.Therefore, the section decrement is set at 20% o'clock, do not implement extruded material or the rolled material that drawing is processed with use, the method in the past of heating that must be more than 210 ℃ or 210 ℃ is compared, and using alloy structure is the life-span that the present invention of fine drawable material can prolong work materials such as mould more.With section decrement r
2Be set to surpass at 33% o'clock, the lower limit of Heating temperature is set to use above-mentioned 3r
2-30 values of trying to achieve, the upper limit of Heating temperature is considered life-span of mould etc. to be set to 250 ℃ of less thaies.Therefore, be among the present invention of fine drawable material using alloy structure, surpass in 40% the processing at the section decrement that carries out as industrial effective processing, under the processing temperature of 250 ℃ of less thaies, also can carry out swaged forging processing.The section decrement surpass 80% force among the worker preferred heating more than 250 ℃ or 250 ℃.
As plastic working, when carrying out bending machining, following temperature condition is suitable.Promptly, the thickness of the filament during bending be set to tmm, bending radius be set to Rmm, when processing temperature is set to T ℃, T satisfies (1) 0.1≤R/t≤1.0 o'clock, 250＞T 〉=250-250R/t, (2) 1.0＜R/t≤1.9 o'clock, 500-250R/t 〉=T＞0, (3) 1.9＜R/t≤2.0 o'clock, 25 〉=T＞0.For example, the ratio R/t of the thickness t of radius of curvature R and filament is 1.0～1.9 o'clock, Heating temperature T (℃) can be set to 250 ℃ of less thaies, particularly, can the upper limit be set to 500-250R/t or below the 500-250R/t.That is, can learn, can be set to (for example 20 ℃) about 100 ℃ of less thaies even room temperature from test-results described later.In addition, R/t is 1.9～2.0 o'clock, can with Heating temperature T (℃) be set to below 25 ℃ or 25 ℃.In the previous methods of using the extruded material do not implement drawing processing or rolled material, be 1.0～2.0 bending machining at R/t, when particularly carrying out about 1.5～1.0 bending machining, need heating.In contrast,,, in R/t is 1.0～2.0 bending machining,, also bending machining can be fully carried out, heating facilities can be do not needed even do not heat by the effect of fine crystal grain because the present invention uses drawable material.In addition, owing to do not heat, can seek the long lifetime in the life-span of work materials such as mould.On the other hand, the forcing man-hour of R/t less than 1.0, the lower limit of Heating temperature is set to the value of being tried to achieve by above-mentioned 250-250R/t, and the upper limit of Heating temperature is considered life-span of mould etc. to be set to 250 ℃ of less thaies.In the method in the past of using extruded material, be forcing among the worker below 1.2 or 1.2 at R/t, the heating more than 200 ℃ or 200 ℃ is necessary, and particularly, R/t is forcing among the worker below 1.0 or 1.0, and the heating more than 250 ℃ or 250 ℃ is necessary.In contrast, in the present invention, be fine drawable material by using alloy structure, even R/t is 0.1～1.0 the worker that forces, also can under 250 ℃ of processing temperature less thaies, fully carry out bending machining.
The thickness of above-mentioned filament can be enumerated, and for example, filament is metal wire (thread like body) or rhoptry, and section is a diameter when circular, and filament is metal wire or rhoptry, and section is a thickness during for rectangle, and filament is the poor of Guan Shiwei external diameter and internal diameter.
In addition, if R/t surpasses 2.0, the degree of bending machining is low, even extruded material or rolled material also can be processed at normal temperatures, does not therefore stipulate in the present invention.In addition, forcing among the worker of R/t less than 0.1, expectation surpasses 225 ℃ heating, therefore considers the life-span of the work material of mould etc., does not stipulate among the present invention.
The present invention is effective in the Magnuminium with hcp structure that does not rely on the processibility under (for example, 20 ℃) about alloy composition, shortage room temperature.For example, can utilize casting with Magnuminium or extension Magnuminium.Particularly, can enumerate, contain 0.1 weight %～12 weight % Al Magnuminium or contain the Magnuminium of Zn:0.1 weight %～10 weight % and Zr:0.1 weight %～2.0 weight %.When containing Al, can also enumerate, contain the Magnuminium more than a kind or a kind that is selected among Mn:0.1 weight %～2.0 weight %, Zn:0.1 weight %～5.0 weight %, Si:0.1 weight %～5.0 weight %.As above-mentioned alloy composition, can use AZ system in the representational ASTM numbering, AS system, AM system, ZK system etc.As the content of Al, in weight %, can be divided into 0.1～less than 2.0% and surpass 2.0～12.0%.Except that above-mentioned chemical ingredients, can be used as the alloy that contains Mg and impurity usually and use.Impurity can be enumerated, Fe, Si, Cu, Ni, Ca etc.
In AZ system, the content of Al is the Magnuminium of 2.0～12.0 weight %, can enumerate, for example, AZ31, AZ61, AZ91 etc.AZ31 is for example, in weight %, to contain Al:2.5～3.5%, Zn:0.5～1.5%, Mn:0.15～0.5%, Cu:0.05% or 0.05% following, the Magnuminium below the Si:0.1% or 0.1%, below the Ca:0.04% or 0.04%.AZ61 is for example, in weight %, to contain Al:5.5～7.2%, Zn:0.4～1.5%, Mn:0.15～0.35%, Ni:0.05% or 0.05% following, the Magnuminium below the Si:0.1% or 0.1%.AZ91 for example is, in weight %, contain Al:8.1～9.7%, Zn:0.35～1.0%, Mn:0.13% or 0.13% above, the Magnuminium below the Cu:0.1% or 0.1%, below the Ni:0.03% or 0.03%, below the Si:0.5% or 0.5%.In AZ system, as Al content be 0.1～less than, 2.0 weight % Magnuminium, can enumerate, for example, AZ10, AZ21 etc.AZ10 is for example, in weight %, to contain Al:1.0～1.5%, Zn:0.2～0.6%, Mn:0.2% or 0.2% above, the Magnuminium below the Cu:0.1% or 0.1%, below the Si:0.1% or 0.1%, below the Ca:0.4% or 0.4%.AZ21 is for example, in weight %, to contain Al:1.4～2.6%, Zn:0.5～1.5%, Mn:0.15～0.35%, Ni:0.03% or 0.03% following, the Magnuminium below the Si:0.1% or 0.1%.
In AS system, be the Magnuminium of 2.0～12.0 weight % as the content of Al, can enumerate, for example, AS41 etc.AS41 is, for example, in weight %, contains Al:3.7～4.8%, Zn:0.1% or 0.1% following, Cu:0.15% or 0.15% following, Mn:0.35～0.60%, Ni:0.001% or Magnuminium 0.001% following, Si:0.6～1.4%.In AS system, be the Magnuminium of 0.1～less than, 2.0 weight % as the amount of Al, can enumerate AS21 etc.AS21 is, for example, in weight %, contains the Magnuminium of Al:1.4～2.6%, Zn:0.1% or 0.1% following, Cu:0.15% or 0.15% following, Mn:0.35～0.60%, Ni:0.001%, Si:0.6～1.4%.
In AM system, can enumerate, for example, AM60, AM100 etc.AM60 is, for example, in weight %, contain Al:5.5～6.5%, Zn:0.22% or 0.22% following, the Magnuminium below the Cu:0.35% or 0.35%, more than the Mn:0.13% or 0.13%, below the Ni:0.03% or 0.03%, below the Si:0.5% or 0.5%.AM100 is, for example, in weight %, contain Al:9.3～10.7%, Zn:0.3% or 0.3% following, Cu:0.1% or 0.1% following, Mn:0.1～0.35%, Ni:0.01% or 0.01% following, Si:0.3% or the following Magnuminium of .3%.
In ZK system, can enumerate, for example, ZK40, ZK60 etc.ZK40 is for example, in weight %, to contain Zn:3.5～4.5%, Zr:0.45% or 0.45% above Magnuminium.ZK60 is for example, in weight %, to contain Zn:4.8～6.2%, Zr:0.45% or 0.45% above Magnuminium.
In magnesium simple substance, be difficult to obtain full intensity, but, can obtain good intensity by containing above-mentioned chemical ingredients.
The present invention goes for obtaining formed body by the plastic working filament, for example, and the manufacturing of frame and screw etc. such as the reinforcement of spectacle-frame or portable electronic device etc.
The simple declaration of accompanying drawing
Fig. 1 illustrates to change draft at various temperatures and forge to add whether can forge the figure of processing man-hour, and Fig. 1 (a) expression drawable material, Fig. 1 (b) represent extruded material;
Fig. 2 illustrates to change the section decrement at various temperatures and carry out the figure that swaged forging when processing whether can swaged forging processing, and Fig. 2 (a) expression drawable material, Fig. 2 (b) represent extruded material;
Fig. 3 is the figure whether ratio R/t that the thickness t that changes radius of curvature R and machined material at various temperatures is shown can bending machining when carrying out bending machining, and Fig. 3 (a) expression drawable material, Fig. 3 (b) represent rolled material.
The optimum regime that carries out an invention
Below, embodiment of the present invention are described.
(embodiment 1)
Preparation contains Al:3.0%, Zn:1.0%, Mn:0.15% in weight %, and rest part contains the extruded material (φ 4.0mm, φ 3.0mm) of the Magnuminium (material that is equivalent to ASTM numbering AZ31) of Mg and impurity.The extruded material of φ 4.0mm, at about 160 ℃ temperature, and the section decrement of per 1 passage: under the degree of finish below 20% or 20%, implement drawing processing (for reaching 160 ℃ heat-up rate: about 10 ℃/sec, linear velocity: 16m/sec), be drawn to φ 3.0mm.In addition, drawing processing back implement 350 ℃ * 15min thermal treatment, remove the homogeneous miniaturization that drawing adds the distortion in man-hour, carries out the tissue that caused by recrystallize.
With the drawable material of the φ 3.0mm that obtains, and the extruded material that does not carry out the φ 3.0mm of drawing processing be cut to the length of 3mm, as test film.Under various drafts, direction of principal axis along the line implements to forge processing to these test films.At this moment, the scope at 100 ℃～250 ℃ is heated to all temps with each test film, forges processing.And whether investigation can forge processing.It the results are shown in Fig. 1.In Fig. 1, zero expression can be forged the alloy of processing, and fracture etc. takes place in * expression, can not forge the alloy of processing, and △ represents to forge processing, but the Heating temperature height, in-problem alloy on the life-span of mould this point.In addition, in Fig. 1, mathematical expression (1) expression T=3r
1+ 150, mathematical expression (2) expression T=3r
1+ 10.In mathematical expression (1), (2), T is a Heating temperature, r
1Be draft.
Shown in Fig. 1 (a), as can be known, drawable material forged add man-hour, for draft r
1(%), satisfy T 〉=3r by being heated to
1+ 10 temperature T ℃ just can be forged processing.That is, when using drawable material, even the heating of 250 ℃ of less thaies also can fully be forged processing.Particularly, draft is about 20～30% alloy, is satisfying T＜3r
1Under+150 the temperature, also can fully forge processing.In addition, when being heated to 250 ℃, under any draft of 20～80%, can forge processing, but when considering the life-span of mould, preferably adopt the heating of 250 ℃ of less thaies to process.
In contrast, shown in Fig. 1 (b), the extruded material that does not carry out drawing processing forged add man-hour, for draft r
1(%), if do not satisfy T 〉=3r
1+ 150 heating then can not be processed.Particularly, add man-hour, must carry out the heating more than 250 ℃ or 250 ℃ in the forging that surpasses 40% as industrial effective processing draft.
In forming different Magnuminiums, carry out same test.That is, extruded material is implemented with various drafts and in all temps lower edge of 100 ℃～250 ℃ of scopes bobbin direction, to forge processing to having carried out heat treated drawable material after the above-mentioned drawing processing.Below, the composition of the Magnuminium of testing is shown.
In weight %, contain Al:1.2%, Zn:0.4%, Mn:0.3%, rest part contains the Magnuminium (material that is equivalent to ASTM numbering AZ10) of Mg and impurity
In weight %, contain Al:6.4%, Zn:1.0%, Mn:0.28%, rest part contains the Magnuminium (material that is equivalent to ASTM numbering AZ61) of Mg and impurity
In weight %, contain Al:9.0%, Zn:0.7%, Mn:0.1%, rest part contains the Magnuminium (material that is equivalent to ASTM numbering AZ91) of Mg and impurity
In weight %, contain Al:1.9%, Mn:0.45%, Si:1.0%, rest part contains the Magnuminium (material that is equivalent to ASTM numbering AS21) of Mg and impurity
In weight %, contain Al:4.2%, Mn:0.50%, Si:1.1%, rest part contains the Magnuminium (material that is equivalent to ASTM numbering AS41) of Mg and impurity
In weight %, contain Al:6.1%, Mn:0.44%, rest part contains the Magnuminium (material that is equivalent to ASTM numbering AM60) of Mg and impurity
In weight %, contain Zn:5.5%, Zr:0.45%, rest part contains the Magnuminium (material that is equivalent to ASTM numbering ZK60) of Mg and impurity
Then, for draft r
1(%), by all being heated to, any test materials satisfies T 〉=3r
1+ 10 temperature T ℃ all can be forged processing, even the heating of 250 ℃ of less thaies also can fully be processed.
(embodiment 2)
To the drawable material (material that is equivalent to ASTM numbering AZ31) of making φ 3.0mm under the drawing condition similarly to Example 1, the extruded material (material that is equivalent to ASTM numbering AZ31) that reaches the φ 3.0mm that does not carry out drawing processing, carry out swaged forging processing.Swaged forging processing is carried out as follows: the scope at 100 ℃～250 ℃ is heated to all temps with each test materials, change the section decrement, make it to become φ 2.7mm (section decrement 19%), φ 2.4mm (section decrement 36%), φ 2.3mm (section decrement 41.2%), φ 2.1mm (section decrement 51%), φ 1.9mm (section decrement 59.9%), φ 1.6mm (section decrement 71.6%), 7 kinds of diameters of φ 1.4mm (section decrement 78.2%).And whether investigation can carry out swaged forging processing.It the results are shown in Fig. 2.In Fig. 2, zero expression can swaged forging the alloy of processing, fracture etc. takes place in * expression, can not carry out the alloy of swaged forging processing, △ represents can swaged forging processing, but the Heating temperature height, in-problem alloy on the life-span of mould this point.In addition, in Fig. 2, mathematical expression (3) expression T=3r
2+ 150, mathematical expression (4) expression T=3r
3-30.In mathematical expression (3), (4), T is a Heating temperature, r
2Be the section decrement.
Shown in Fig. 2 (a), as can be known, drawable material is carried out swaged forging when processing, for section decrement r
2(%), satisfy T 〉=3r by being heated to
2-30 temperature T ℃ just can be carried out swaged forging processing.That is, when using drawable material, even swaged forging processing also can be fully carried out in the heating of 250 ℃ of less thaies.Particularly, the section decrement is about 20～30% alloy, is satisfying T＜3r
2Under+150 the temperature, also can fully process.In addition, when being heated to 250 ℃, under 20～80% arbitrary cross-section decrement, can carry out swaged forging processing, but when considering the life-span of mould, preferably adopt the heating of 250 ℃ of less thaies to process.
In contrast, shown in Fig. 2 (b), when the extruded material that does not carry out drawing processing is carried out swaged forging processing, even section decrement r
2Be about 20～30%, do not satisfy T 〉=3r if be not heated to
2Under+150 the temperature T ℃, then can not process.Particularly, if the section decrement more than 40% or 40%, if do not carry out heating more than 250 ℃ or 250 ℃, just can not carry out swaged forging processing.
In forming different Magnuminiums, carry out same experiment.That is, extruded material is carried out after similarly to Example 1 the drawing processing, under the various section decrements of making above-mentioned 7 kinds of diameters and all temps, carry out swaged forging processing having carried out heat treated drawable material 100～250 ℃ scope.Magnuminium use with above-mentioned shown in composition the same material that is equivalent to AZ10, be equivalent to AZ61 material, be equivalent to AZ91 material, be equivalent to AS21 material, be equivalent to AS41 material, be equivalent to AM60 material, be equivalent to the material of ZK60.
The result of test is for section decrement r
2(%), by all being heated to, any test materials satisfies T 〉=3r
2-30 temperature T ℃ can be carried out swaged forging processing, even the heating of 250 ℃ of less thaies also can fully be processed.
(embodiment 3)
The drawable material (material that is equivalent to ASTM numbering AZ31) of the φ 3.0mm that makes under the drawing condition identical with embodiment 1 is carried out drawing processing again, and (the few rate of the Duan Mian Minus of 160 ℃ of temperature, per 1 passage: about 15～18%, to 160 ℃ heat-up rates: about 10 ℃/sec, linear velocity: 20m/sec), obtaining section form is the wire rod of rectangle (thickness t 1mm * wide 3mm).Thermal treatment to 350 ℃ * 15min of this wire rod enforcement obtains test film.In addition, use with embodiment 1 in the same composition (material that is equivalent to ASTM numbering AZ31) of alloy that uses, prepare thickness t and be 1mm the calendering material, cut into wide 3mm, make test film.
To the drawable material of thickness t 1mm * wide 3mm of obtaining, and each test film of the rolled material of thickness t 1mm * wide 3mm carry out bending machining with various radius of curvature R.Bending machining is heated to all temps 20～250 ℃ scope with each test film and carries out.And whether investigation can carry out bending machining.It the results are shown in Fig. 3.In Fig. 3, the alloy that zero expression can bending machining, fracture etc. takes place in * expression, can not carry out the alloy of bending machining, and △ represents can bending machining, but the Heating temperature height, in-problem alloy on the life-span of mould this point.In addition, in Fig. 3, mathematical expression (5) expression T=-250R/t+250, mathematical expression (6) expression T=-250R/t+500, in mathematical expression (5), (6), T is a Heating temperature, R is that bending radius, t are the thickness of test film.
Shown in Fig. 3 (a) as can be known, when drawable material is carried out bending machining, the ratio R/t of the thickness t (mm) of radius of curvature R (mm) and test film satisfy 0.1≤R/t≤1.0 o'clock, by be heated to satisfy T 〉=-temperature T of 250R/t+250 ℃, then can carry out bending machining.Particularly R/t for surpass 1.0, during less than 2.0, even T＜-temperature of 250R/t+500, particularly,, also can fully carry out bending machining as 20 ℃ about room temperature.In addition, R/t is 2.0 o'clock, under 20 ℃, can fully carry out bending machining.That is, when using drawable material, even the heating of 250 ℃ of less thaies also can fully be carried out bending machining.In addition, when being heated to 250 ℃, under any R/t of 0.1～2.0, can carry out bending machining, but when considering the life-span of mould, preferably adopt the heating of 250 ℃ of less thaies to process.
In contrast, shown in Fig. 3 (b), when the rolled material that does not carry out drawing processing is carried out bending machining, even R/t is more than 1.0 or 1.0, if be not heated to satisfy T 〉=-temperature T of 250R/t+500 ℃, then can not process.In addition, be forcing among the worker below 0.5 or 0.5 at R/t, even carry out 250 ℃ heating, can not carry out bending machining.
In forming different Magnuminiums, carry out same experiment.Promptly, the drawing that extruded material carries out is similarly to Example 1 processed, drawing is processed into after the section rectangle again, to having carried out heat treated drawable material, thinking that R/t is become under 0.1～2.0 various bending radius and all temps 20～250 ℃ scope carries out bending machining, Magnuminium use with above-mentioned shown in the same material that is equivalent to AZ10 of composition, be equivalent to AZ61 material, be equivalent to AZ91 material, be equivalent to AS21 material, be equivalent to AS41 material, be equivalent to AM60 material, be equivalent to the material of ZK60.
The result of test, 0.1≤R/t≤1.0 o'clock, by any test materials all is heated to satisfy T 〉=-temperature T of 250R/t+250 ℃, all can fully carry out bending machining.In addition, even as in 1.0＜R/t≤1.9 o'clock, temperature T (℃) be than-temperature that 250R/t+500 is little, R/t is 1.0 or 1.0 when above, is 20 ℃ about room temperature, also can carry out sufficient bending machining.Like this, test materials arbitrarily is even bending machining can be fully carried out in the heating of 250 ℃ of less thaies.
Industrial applicibility
More than, as described, according to the manufacture method of magnesium base alloy formed article of the present invention, logical Cross and use the filament that is obtained by drawing processing, can reach can under the processing temperature of 250 ℃ of less thaies Carry out the excellent effect of plastic working. Therefore, because the present invention, there is no need as in the past to extruded material Or rolled material directly carry out plastic working ground when carrying out plastic working, be set to 250 ℃ or 250 ℃ with On high temperature, therefore can prolong life-span of the rapidoprints such as mould or roller, can productivity well Formed body to magnesium base alloy.
Claims (7)
1. the manufacture method of a magnesium base alloy formed article is characterized in that, under 250 ℃ of processing temperature less thaies, will become formed body by the filament plastic working that contains Magnuminium that drawing processing obtains.
2. the manufacture method of a magnesium base alloy formed article is characterized in that, under the processing temperature T that meets the following conditions ℃, will forge by the filament that contains Magnuminium that drawing processing obtains and be processed as formed body,
Draft is set to r1%, when processing temperature is set to T ℃, T satisfies
3r
1+150＞T≥3r
1+10
Here, 20%≤r
1＜80%, T＜250 ℃.
3. the manufacture method of a magnesium base alloy formed article is characterized in that, under the processing temperature T that meets the following conditions ℃, will be processed as formed body by the filament swaged forging that contains Magnuminium that drawing processing obtains,
The section decrement is set to r
2When %, processing temperature were set to T ℃, T satisfied
3r
2+150＞T≥3r
2-30
Here, 20%≤r
2≤ 80%, T＜250 ℃.
4. the manufacture method of a magnesium base alloy formed article is characterized in that, under the processing temperature T that meets the following conditions ℃, the filament bending machining that contains Magnuminium that will be obtained by drawing processing is a formed body,
The thickness of the filament during bending be set to tmm, bending radius be set to Rmm, when processing temperature is set to T ℃, T satisfies
0.1≤R/t≤1.0 o'clock, 250＞T 〉=250-250R/t
1.0＜R/t≤1.9 o'clock, 500-250R/t 〉=T＞0
1.9＜R/t≤2.0 o'clock, 25 〉=T＞0.
5. according to the manufacture method of the magnesium base alloy formed article of any record in the claim 1～4, it is characterized in that Magnuminium contains the Al of 0.1～12 weight %.
6. according to the manufacture method of the magnesium base alloy formed article of claim 5 record, it is characterized in that, this Magnuminium also contain be selected from Mn:0.1～2.0%, Zn:0.1～5.0%, Si:0.1～5.0% by weight more than a kind or a kind.
7. according to the manufacture method of the magnesium base alloy formed article of any record in the claim 1～4, it is characterized in that Magnuminium contains Zn:0.1～10% and Zr:0.1～2.0% by weight.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003155476A JP4332889B2 (en) | 2003-05-30 | 2003-05-30 | Method for producing magnesium-based alloy compact |
| JP155476/2003 | 2003-05-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1798857A true CN1798857A (en) | 2006-07-05 |
| CN100476012C CN100476012C (en) | 2009-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800151311A Expired - Fee Related CN100476012C (en) | 2003-05-30 | 2004-04-12 | Method for producing magnesium base alloy formed article |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20070169858A1 (en) |
| EP (1) | EP1645651B1 (en) |
| JP (1) | JP4332889B2 (en) |
| KR (1) | KR100727211B1 (en) |
| CN (1) | CN100476012C (en) |
| DE (1) | DE602004021808D1 (en) |
| TW (1) | TWI279446B (en) |
| WO (1) | WO2004106576A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102046821B (en) * | 2008-06-03 | 2013-03-27 | 独立行政法人物质·材料研究机构 | Mg-base alloy |
| TWI577264B (en) * | 2008-12-26 | 2017-04-01 | 住友電氣工業股份有限公司 | Magnesium alloy member and method for producing the same |
| CN113840939A (en) * | 2019-05-20 | 2021-12-24 | 大众汽车股份公司 | Sheet metal product with high bendability and manufacturing method thereof |
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| JP4782987B2 (en) * | 2003-06-19 | 2011-09-28 | 住友電気工業株式会社 | Magnesium-based alloy screw manufacturing method |
| JP4849377B2 (en) * | 2006-01-13 | 2012-01-11 | 住友電気工業株式会社 | Magnesium alloy screw manufacturing method and magnesium alloy screw |
| JP5224259B2 (en) * | 2006-11-17 | 2013-07-03 | 新潟県 | Plastic processing method of magnesium alloy sheet |
| JP2009280846A (en) * | 2008-05-20 | 2009-12-03 | Mitsui Mining & Smelting Co Ltd | Magnesium alloy forged member, and producing method therefor |
| TWI391504B (en) * | 2008-07-24 | 2013-04-01 | Chung Shan Inst Of Science | Grain - refined magnesium alloy sheet and its manufacturing method |
| JP2010147259A (en) * | 2008-12-19 | 2010-07-01 | Sumitomo Electric Ind Ltd | Rolled plate shaped body of magnesium alloy and electrical apparatus using the same |
| JP5348624B2 (en) * | 2011-01-24 | 2013-11-20 | 住友電気工業株式会社 | Magnesium alloy screw |
| JP5741923B2 (en) * | 2011-04-15 | 2015-07-01 | 住友電気工業株式会社 | Cover member |
| JP6157484B2 (en) * | 2011-10-06 | 2017-07-05 | ユニバーシティ オブ ピッツバーグ オブ ザ コモンウェルス システム オブ ハイヤー エデュケーションＵｎｉｖｅｒｓｉｔｙ Ｏｆ Ｐｉｔｔｓｂｕｒｇｈ Ｏｆ Ｔｈｅ Ｃｏｍｍｏｎｗｅａｌｔｈ Ｓｙｓｔｅｍ Ｏｆ Ｈｉｇｈｅｒ Ｅｄｕｃａｔｉｏｎ | Biodegradable metal alloy |
| CN103243282B (en) * | 2013-05-07 | 2015-04-22 | 太原理工大学 | Preparation method of magnesium alloy sheet |
| CN108728710A (en) * | 2018-07-07 | 2018-11-02 | 中南大学 | A kind of strong nanometer gradient magnesium alloy preparation method of VW93M superelevation |
| CN108796329A (en) * | 2018-07-07 | 2018-11-13 | 中南大学 | A kind of high thermal stability Mg-Gd-Y-Zr nanometers of magnesium alloy preparation methods |
| CN108754367A (en) * | 2018-07-07 | 2018-11-06 | 中南大学 | A kind of atom segregation and elementide strengthen Mg-Gd-Y-Zr magnesium alloy methods |
| US11890004B2 (en) | 2021-05-10 | 2024-02-06 | Cilag Gmbh International | Staple cartridge comprising lubricated staples |
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| GB1073629A (en) * | 1964-08-07 | 1967-06-28 | Magnesium Elektron Ltd | Improvements in or relating to magnesium base alloys |
| EP0139168A1 (en) * | 1983-09-20 | 1985-05-02 | Alumax Inc. | Fine grained metal composition |
| JPS63282232A (en) * | 1987-05-15 | 1988-11-18 | Showa Denko Kk | High-strength magnesium alloy for plastic working and its production |
| JPH0390530A (en) * | 1989-08-24 | 1991-04-16 | Pechiney Electrometall | Magnesium alloy high in mechanical strength and quick hardening method for its manufacture |
| US5316598A (en) * | 1990-09-21 | 1994-05-31 | Allied-Signal Inc. | Superplastically formed product from rolled magnesium base metal alloy sheet |
| JP2001071037A (en) * | 1999-09-03 | 2001-03-21 | Matsushita Electric Ind Co Ltd | Press working method for magnesium alloy and press working device |
| JP3592310B2 (en) * | 2001-06-05 | 2004-11-24 | 住友電工スチールワイヤー株式会社 | Magnesium-based alloy wire and method of manufacturing the same |
| JP2002371334A (en) * | 2001-06-13 | 2002-12-26 | Daido Steel Co Ltd | Mg ALLOY MATERIAL CAPABLE OF COLD WORKING AND MANUFACTURING METHOD THEREFOR |
| JP2002373526A (en) * | 2001-06-14 | 2002-12-26 | Fujikura Ltd | Overhead wire |
| JP2004017114A (en) * | 2002-06-18 | 2004-01-22 | Daido Steel Co Ltd | Production method for magnesium alloy wire material |
| MXPA05002640A (en) * | 2002-09-13 | 2005-07-19 | Olin Corp | Age-hardening copper-base alloy and processing. |
-
2003
- 2003-05-30 JP JP2003155476A patent/JP4332889B2/en not_active Expired - Fee Related
-
2004
- 2004-04-12 US US10/556,434 patent/US20070169858A1/en not_active Abandoned
- 2004-04-12 KR KR1020057022136A patent/KR100727211B1/en not_active IP Right Cessation
- 2004-04-12 EP EP04726905A patent/EP1645651B1/en not_active Expired - Fee Related
- 2004-04-12 CN CNB2004800151311A patent/CN100476012C/en not_active Expired - Fee Related
- 2004-04-12 WO PCT/JP2004/005226 patent/WO2004106576A1/en active Application Filing
- 2004-04-12 DE DE602004021808T patent/DE602004021808D1/en not_active Expired - Lifetime
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102046821B (en) * | 2008-06-03 | 2013-03-27 | 独立行政法人物质·材料研究机构 | Mg-base alloy |
| TWI577264B (en) * | 2008-12-26 | 2017-04-01 | 住友電氣工業股份有限公司 | Magnesium alloy member and method for producing the same |
| CN113840939A (en) * | 2019-05-20 | 2021-12-24 | 大众汽车股份公司 | Sheet metal product with high bendability and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1645651B1 (en) | 2009-07-01 |
| CN100476012C (en) | 2009-04-08 |
| KR20060003908A (en) | 2006-01-11 |
| EP1645651A1 (en) | 2006-04-12 |
| DE602004021808D1 (en) | 2009-08-13 |
| WO2004106576A1 (en) | 2004-12-09 |
| JP4332889B2 (en) | 2009-09-16 |
| KR100727211B1 (en) | 2007-06-13 |
| TW200500473A (en) | 2005-01-01 |
| JP2004353067A (en) | 2004-12-16 |
| EP1645651A4 (en) | 2007-05-09 |
| TWI279446B (en) | 2007-04-21 |
| US20070169858A1 (en) | 2007-07-26 |
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