WO2007114521A1 - 塗装焼付け硬化性に優れた6000系アルミニウム押出材及びその製造方法 - Google Patents
塗装焼付け硬化性に優れた6000系アルミニウム押出材及びその製造方法 Download PDFInfo
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- WO2007114521A1 WO2007114521A1 PCT/JP2007/057724 JP2007057724W WO2007114521A1 WO 2007114521 A1 WO2007114521 A1 WO 2007114521A1 JP 2007057724 W JP2007057724 W JP 2007057724W WO 2007114521 A1 WO2007114521 A1 WO 2007114521A1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/002—Extruding materials of special alloys so far as the composition of the alloy requires or permits special extruding methods of sequences
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
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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
-
- 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
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/043—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
Definitions
- the aluminum extrusion shape material is equivalent to paint baking.
- the present invention can be applied to structural members for vehicles such as automobiles, members that receive a thermal history corresponding to paint baking, such as frame structural materials such as side sills, side members, cross mennos, and door frames. Background art
- the extrusion process which is an aluminum extrusion process ⁇ tensile straightening-after cutting, secondary processes such as bending depending on the structural members of automobiles, etc., tempering ⁇ painting ⁇ painting and baking It is manufactured by.
- the aluminum extruded material is subjected to tempering treatment and paint baking and two thermal histories.
- the tempering treatment is performed in the secondary processing shape, the loading efficiency is poor and the price of the product increases. Therefore, the tempering treatment is abolished as much as possible, or the tempering treatment in the secondary machining shape is abolished and applied.
- a process for increasing the proof stress of the extruded aluminum material by utilizing the thermal history of baking is preferable.
- structural members such as automobiles have low proof stress during secondary processing, ensuring adequate resistance when used with frame structural materials such as side sinore, side members, cross members, and door frames. It is preferable.
- the Mg 2 Si content and the excess Mg content (or excess S i represented by the stoichiometric composition) If the total content is 0.6 wt% or more, natural aging will increase the yield strength immediately after extrusion, and the yield strength after aging treatment will be higher than when not left at room temperature. So-called “negative effect” occurs. Paint Baking Curability It is preferable that the extruded aluminum shape does not increase in yield strength even when left at room temperature, and exhibits performance efficiently after receiving a cram school history corresponding to paint baking.
- Japanese Patent Application Laid-Open No. 6-2063 discloses a method of adjusting alloy components and adding Be B, and Japanese Patent Application Laid-Open No. 9 1 7 6 8 06 A method for controlling the cooling rate after solution treatment is disclosed.
- Japanese Patent Laid-Open No. 2 0 2 — 2 3 5 1 5 8 discloses that an aluminum alloy extruded shape having excellent bending workability and paint bake hardenability is obtained. by mass 0/0, M g:. 0. 3 ⁇ 1 3%, S i:. 0. 2 ⁇ 1 2%, S n: it contains 3% 0.0 1 0., residual The part is made of aluminum alloy ingots consisting of A 1 and inevitable impurities, preheated at 400 to 5500 ° C and subjected to hot extrusion, and then cooled at a cooling rate of 50 ° CZ min or more.
- the proof stress is 180 MP or more from the viewpoint of vehicle protection at the time of collision.
- the present invention provides a vehicle with a heat history (about 15 to 20 ° CX 0.3 to 0.5 hr) corresponding to paint baking.
- the technical issue is to provide an aluminum extruded shape with excellent paint bake hardenability that can ensure the resistance to rust applicable to structural members.
- the present inventors immediately hold a specific composition of a 600-series aluminum-aluminum alloy (A1-Mg-Si alloy) at a specific temperature for a specific time after extrusion, and then paint and paint Aluminum extrudates that have received a thermal history equivalent to baking, or aluminum extrudates in which the billet temperature and the cooling rate immediately after extrusion are specifically set in the extrusion manufacturing process solve the above problems. It was found that the present invention was reached.
- A1-Mg-Si alloy 600-series aluminum-aluminum alloy
- the present invention is an invention of a 600-based aluminum extruded material, and is 0.3% to 0.7% of magnesium and 0.0% of silicon to ensure strength at a mass percentage. 7% to 1.5%, 0.35% or less of copper for securing elongation, 0.35% or less of iron for securing resistance, and 0.005% of titanium for crystal refinement Containing 0.1%, and 0.05 to 0.30 ° / manganese for stabilizing yarn and weave during extrusion. Chromium is 0.1% or less, and Zirconium is 0.1% or less.
- the 6 00 series aluminum extruded material of the present invention is an aluminum with excellent paint bake hardenability that can improve resistance to heat just like after the tempering treatment when subjected to a thermal history corresponding to paint bake. Extruded material.
- the 600-based aluminum extruded material of the present invention can be obtained by the following means.
- the billet temperature is 500 ° C or higher, immediately after extrusion.
- the present invention is an invention of a method for producing a 600-based aluminum extrudate, in which 0.3% to 0.7% magnesium and 0.7% to 1% silicon by mass%. 5%, copper 0.35% or less, iron 0.35% or less, titanium 0.5-0.1%, and manganese 0.5-0.5%. 30%, chromium is 0.1% or less, and zirconium is 0.1% or less, and a total of one or more transition elements selected from manganese, chromium, and zirconium are 0.0%.
- An aluminum alloy ingot containing 5 to 0.40% and the balance of aluminum and inevitable impurities is extruded.
- the 600-based aluminum extruded material of the present invention can be obtained by the following means.
- the billet temperature is set to 500 ° C or higher, and the cooling rate of 4 m in is set to 70 ° C / min or higher immediately after extrusion.
- an aluminum extruded shape with excellent paint bake hardenability that can satisfy sufficient heat resistance with a heat history of paint baking for a 600-based aluminum extruded shape and its A manufacturing method can be provided.
- FIGS. 1A to 1C compare and explain the manufacturing process of an automobile member using an aluminum extruded profile according to the present invention, taking a door frame as an example.
- Figure 1A shows the manufacturing process for a conventional split door frame.
- Figure 1B shows the manufacturing process for a conventional integrated door frame.
- FIG. 1C shows the manufacturing process of the integrated door frame of the present invention.
- Figure 2 shows a cross section of the test piece.
- Fig. 3 shows the thermal history corresponding to paint baking.
- FIGS. 1A to 1C compare and explain the manufacturing process of an automobile member using the aluminum extruded profile of the present invention and the present invention, taking a door frame as an example.
- Figure 1A shows the manufacturing process for a conventional split door frame.
- the billet (BLT) made of aluminum is a secondary process such as extrusion forming ⁇ tensile straightening ⁇ cutting, bending bending such as stretch bender bending, and welding with other aluminum members.
- tempering treatment of T 5 200 ° CX 3 hr
- it is manufactured by painting and baking at about 170 ° C X 0.3 hr after the painting process.
- Figure 1B shows the manufacturing process for a conventional integrated door frame.
- a billet (BLT) made of aluminum two-piece material undergoes secondary processing such as extrusion bending ⁇ stretching bending ⁇ stretch bending ⁇ cutting, which is the extrusion process, for example, T Perform tempering treatment for 5 (200 ° CX 3 hr). After that, it is manufactured by painting and baking for about 1700 ° c X 0 • 3 hr through the painting process.
- the aluminum extruded material is subject to two heat histories: tempering and paint baking.
- tempering if the tempering process is performed in the secondary processing shape, the loading efficiency is poor and the price of the product becomes high.
- FIG. 1C shows the manufacturing process of the integral frame of the present invention.
- the bi-lithium (BLT) made of an aluminum member is subjected to secondary processing such as bending such as stretch bending, bending, etc. after extrusion, tension correction, and cutting, which is an extrusion process.
- secondary processing such as bending such as stretch bending, bending, etc. after extrusion, tension correction, and cutting, which is an extrusion process.
- it is manufactured by painting and baking for about 170 ° CX 0.3 hr through the painting process.
- the tempering treatment is abolished, and the heat history of only one coating baking is used to increase the yield strength of the gallium, one-piece extruded material.
- the heat history of paint baking for the tempering treatment is about 170 ° CX 0.3 hr, and the aging temperature is lower than that for the normal tempering treatment (about 200 ° CX 3 hr), and Retention time is short.
- paint-baking hardenability Aruminiumu extruded profile is aging temperature is low, and, when the holding time is shorter, when precipitated by aging treatment M g 2 S i
- the density of the precipitate is preferably about the same as that of the tempering treatment. This Mg 9 Si precipitate can improve the resistance to heat in a 600-based aluminum alloy. Therefore, in the present invention, magnesium and silicon are contained.
- the present invention provides a range of alloy components capable of efficiently exhibiting paint bake hardenability without impairing the extrusion formability of a 600 series aluminum alloy, and a proof stress of 6 after receiving a thermal history corresponding to paint bake. It is defined as a paint bake-hardening aluminum extrusion shape and its manufacturing method that can increase the resistance to 0 MPa or more and secure the resistance to 180 MPa or more from the viewpoint of vehicle protection in the event of a collision. .
- Magnesium is a paint bake-hardening aluminum-to-extrusion shape that secures the necessary resistance. Therefore, it is preferable to contain 0.3% or more of magnesium. However, when a large amount of magnesium is contained, the deformation resistance during extrusion molding is greatly increased, so that the magnesium content is preferably 0.7% or less. Therefore, magnesium is 0.3 to 0.7%. More preferably, it is 0.4% to 0.6%.
- silicon Even if silicon is contained in a large amount relative to magnesium, it is difficult to inhibit extrusion productivity. In addition, it is preferable that silicon should be contained in an amount of 0.7% or more in order to secure the necessary resistance to coating baking curable aluminum extrusion.
- the silicone is 1.
- silicon is 0.7
- ⁇ 1.5% More preferably, it is set to 0.8% to 1.3%.
- Copper is preferably contained in order to ensure strength and elongation, but if it is excessive, corrosion resistance decreases. In addition, deformation resistance during extrusion increases, which tends to hinder productivity. In consideration of this, ⁇ will be 0.35% or less.
- the intermetallic compound is coarsened, the density of subsequent Komutame to precipitate takes silicon constituting the M g 2 S i precipitates make improved resistance to Ca in the aging treatment is rather small. Further, if it is excessive, the corrosion resistance is lowered. Considering this, the iron content should be 0.35% or less.
- Manganese, chromium, and zirconium have the effect of suppressing recrystallization during extrusion and stabilizing the fibrous structure.
- chrome, di Ruconium significantly impairs quenching sensitivity, and depending on the aluminum extrusion that forms structural materials such as automobiles, it becomes difficult to form a supersaturated solid solution by fan air cooling after extrusion.
- Zirconium also forms an intermetallic compound with titanium during fabrication, reducing the effect of titanium crystal refinement and causing cracking during fabrication.
- Manganese is relatively difficult to inhibit quenching sensitivity and suppresses recrystallization. In order to obtain the effect of suppressing recrystallization, it is necessary to contain 0.05% or more. However, addition of 0.30% or more inhibits quenching susceptibility in the same way as chromium and zirconium, and depending on the aluminum extruded profile that forms structural materials for automobiles, etc., a supersaturated solid solution is formed by fan air cooling after extrusion. The density of Mg 2 Si precipitates, which improve the yield strength by subsequent aging treatment, decreases.
- manganese is contained in an amount of 0.05 to 0.30%
- chromium is contained in an amount of 0.1% or less
- zirconium is contained in an amount of 0.10% or less, and selected from mangan, chromium, and zirconium.
- the total of one or more transition elements to be added is set to 0.05 to 0.40%.
- Titanium refines the crystal during fabrication, but the addition effect is saturated even if it is added in excess.
- titanium can be made into 0.05 to 0.10%. More preferably, it can be set to 0.05 to 0.05%, and more preferably 0.05 to 0.03%.
- Inevitable impurities are mixed in various ways, such as ingots when making aluminum alloys and intermediate alloys of additive elements. There are various elements to be mixed. However, if it is 0.05% or less by itself and 0.15% or less in total, Little effect on alloy properties. Considering this, the inevitable impurities shall be 0.05% or less by themselves, and the total amount shall be 0.15% or less.
- Paint bake curable aluminum extrusions are aluminum extrusions that have undergone a thermal history equivalent to painting and painting bake after holding extrusion molding ⁇ 90 ⁇ 50 ° CX l ⁇ 24 hr in the manufacturing process.
- MG formed with a heat history equivalent to subsequent paint baking by holding 90 ° CX 1 to 24 hours after extrusion.
- Generates Si precipitate nuclei (so-called GP zone). This GP zone can be generated more by holding it at a low temperature, but if it is held at a temperature lower than 50 ° C, a holding time of 24 hours or more is required to generate it. Since the production efficiency deteriorates, it is desirable to keep it at 50 ° C or higher as a paint bake-hardening aluminum extrusion material.
- the force S can be set to 90 ⁇ 5 0 1 to 2 4 11 3: after extrusion, and more preferably 70 ⁇ 10 ° CX 1 to 12 hr.
- This 9 0 ⁇ 50 ° CX l ⁇ 24 hr holding process is air-cooled after extrusion and may be held in an atmospheric furnace, or may be held in a water bath or an oil bath. The cooling after molding may be controlled and insulated and held.
- the 90 ° ⁇ 50 ° CX l ⁇ 24 hr holding process will increase the strength due to the gradual formation of GP zones when left at room temperature after extrusion when it is not normal. Force that causes aging 9 0 ⁇ 50 ° CX l ⁇ 24 hours Since GP zone has already been generated, it is also effective in suppressing subsequent natural aging. There is.
- the billet temperature is set to 500 ° C or higher in the manufacturing process, and the cooling rate for 4 min is set to 70 ° CZmin or higher immediately after extrusion. Furthermore, it is an aluminum extruded section that has received a thermal history corresponding to painting and baking after holding 90 ° ⁇ 50 ° CX for 1 to 24 hours immediately after extrusion. In the normal extrusion process, it is unlikely that the billet temperature will be kept above 600 ° C, so there is no upper limit. By setting the billet heating temperature to 500 ° C or higher and setting the cooling rate for 4 min immediately after extrusion to 70 ° C / min or higher, the subsequent 90 ° C is 50 ° C.
- a supersaturated solid solution necessary for generating nuclei of Mg 2 -Si precipitates (so-called GP zone) generated by holding CX 1 to 24 hours can be obtained. If the billet temperature is less than 500 ° C, the holes necessary for GP zone generation cannot be taken into the aluminum, and if the cooling rate is less than 70 ° C Holes are released or solid solute atoms are deposited as precipitates, then 9 0 ⁇ 5 0 ° 0> ⁇ 1 to 2 4 11 1: 0? The zone cannot be created.
- GP zone (So-called GP zone) can be generated. Furthermore, this GP zone can be generated more by holding at a low temperature, but holding at a temperature lower than 50 ° C requires a holding time of 24 hours or more to generate. Since the production efficiency will deteriorate, keep it at 50 ° C or higher as a paint bake curable aluminum extrudate. It is desirable. Also, if kept at a temperature higher than 120 ° C,
- This 90 ° ⁇ 50 ° CX 1 to 24 hr holding step may be air-cooled after extrusion and held in an atmospheric furnace, or may be held in a water bath or oil bath.
- the cooling after extrusion may be controlled to be insulated and held.
- the paint baking curable aluminum extruded shape according to the present invention is suitable as a shape having a solid or hollow portion, and may be a rectangular tube shape, a cylindrical shape, or an irregular shape.
- the raw materials whose ingredients were adjusted so that the composition of the aluminum alloy of the 600 series shown in Test Examples No. 1 and 2 in Table 1 were melted were formed into a cylindrical shape suitable for the extrusion size.
- the alloy components shown in Table 1 are analytical values, and “0.0 0%” takes into account significant figures.
- the cocoon mass was homogenized at 5600 ° C X 4 hr.
- the homogenized billet is extruded with an extrusion mold at the specified extrusion temperature (billet heating temperature) and cooling conditions shown in Table 2, and the frame structure shown in Fig. 2 is obtained.
- An aluminum extruded profile corresponding to the cross section of was formed.
- OMPa and above were designated as “ ⁇ ”, and 1 80 to 1500 MPa was applicable as a result of the cross-sectional design, and “ ⁇ ”, and less than 15 OMPa was designated as “X”. Furthermore, considering the case of secondary processing, the difference in proof stress before and after the thermal history corresponding to paint baking is 60 MPa or more as ⁇ OJ '' and less than 6 OMPa as ⁇ X ''. A comprehensive judgment was made. Table 3 shows the evaluation results.
- Test Example No. 1 is an extruded aluminum material containing Si of 1.10%, Cu of 0.20%, Mg of 0.59%, and Mn of 0.08%. .
- Test Example No. 1 — 1 to Test Example No. 1 — 3 and Test Example No O 1-4 Corresponding to the Comparative Examples No. 1 to 4 are allowed to stand at room temperature after extrusion for 1 2 to 1 68 8 hr. After that, the temperature was kept at 70 ° CX for 12 hours, and the resistance to resistance before and after the B. H. treatment was compared.
- Test Examples No. 1 1-5 to No. 1-8 corresponding to the Examples were subjected to 70 ° CXI 2 hr after being left for 12 hr after extrusion, and 1 2 to 16 hr hr. And compared the resistance before and after the B. H. treatment.
- test example No. 1 —:! ⁇ No. 1-4 indicates that the yield strength after B.H. treatment decreased as the standing time at room temperature after extrusion increased, and 2 1 1 MPa, 2 0 4 MPa, 2 0 6 MPa, respectively. 2 0 4 MPa and the judgment was ⁇ .
- the resistance increases due to B.H. are 9 2 MPa, 6 6 MPa, 61 MPa and 57 MPa, respectively.
- Test example No 1-4 corresponding to the comparative example left at room temperature was judged X.
- the resistance increase due to B.H. was 60 M Pa or more, and the judgment was ⁇ . Therefore, the comprehensive judgment of test example No. 1 — 1 to test example No.
- 1 — 4 corresponding to the examples is that the room temperature standing time after extrusion molding is less than 1 68 hr (test example No) 1-1, .1-2, 1-3) were 0, and 1 6 9 hr or more (Test Example No. 1 1 4) was X.
- test examples corresponding to the examples No. 1 — 5 to 1 1 8 were held for 1 2 hr after extrusion and held at 70 ° CX 1 2 hr, and 1 2 to 1 6 8 hr. It was left at room temperature and treated with B.H., but the resistance against B.H. treatment is 2 1 4 MP a, 2 1 0 MP a s 2 0 9 MP a, 2 1 2 MP a At 70 ° CX for 12 hours, there is no effect due to standing at room temperature, and both are ⁇ . In addition, the increase in resistance to resistance due to B.H.
- Test Example No. 2 is an aluminum extruded material containing 0.90% Si, 0.20% Cu, 0.40% Mg, and 0.08% ⁇ . is there.
- Test examples corresponding to Examples ⁇ ⁇ . 2 _ 1 to Test Examples No. 2 — 3 and Test Examples corresponding to Comparative Examples No. 2 — 4 are 1 2 to 16 8 hr at room temperature after extrusion. After being allowed to stand, it was kept at 70 ° CX for 12 hours, and the resistance to resistance before and after the B. H. treatment was compared.
- test examples No. 2-1 to No. 2-4 show that the yield strength after B.H. treatment decreased as the standing time at room temperature after extrusion decreased, 1 8 2 MPa, 1 7 6 MPa, 1 76 MPa, and 1700 MPa, Test Example No. 2 — 1 was ⁇ , Test Example No. 2 -2 to 2-4 was judged as ⁇ .
- the rise in resistance due to B.H. is 9 2 MPa, 66 MPa, 60 MPa, and 35 MPa, respectively, and decreases as the room temperature standing time increases.
- X in the test example No. 2-4 corresponding to the comparative example left at room temperature was X.
- the increase in resistance to resistance by B.H. was 60 M Pa or more, and the judgment was “good”.
- the room temperature standing time of 24 to 72 hours is B. H.
- the bond judgment is ⁇
- the room temperature standing time after extrusion molding is 1 6 8 h
- test examples N 0. — 2— 5 to 2 — 8 corresponding to the examples were held for 1 2 hr after extrusion and held at 70 ° CX for 12 hr, and 1 2 to 1 6 8 hr After being left at room temperature and treated with B.H., the resistance against B.H. treatment is 1 8 4 MP a, 1 8 3 MP a, 1 8 1 MP a, 1 8 5 There was no effect of standing at room temperature after holding at 70 ° CX 12 hours at MPa, and both were ⁇ . In addition, the increase in resistance due to B.H.
- Extrusion temperature extrusion molding was carried out under the predetermined billet temperature and cooling conditions shown in Fig. 5 to form an aluminum extruded profile corresponding to the cross section of the frame structural material shown in Fig. 2.
- the normal cooling fan setting shown in Table 5 is the condition when a 45 cm fan is rotated at 1 6 8 0 r.p.m.
- the aluminum extrudate was kept at 70 ° C. X I 2 hr, and left at room temperature for 1 week, and a heat history (B.H. treatment) corresponding to paint baking shown in FIG. 2 was added. No heat treatment equivalent to normal tempering treatment is performed o
- Test Example No. 1 is an aluminum extruded profile containing 1.10% Si, 0.20% Cu, 0.59% Mg, and 0.08% Mn. .
- Test example No. 1 — 1 to 1 1 4 is the billet temperature force during extrusion changed to 4 60, 48 0, 50 0, 5 20 ° C. Compared the resistance of In addition, they were compared with those with a billet temperature of 500 ° C during extrusion and a cooling rate of less than 70 ° CZmin for 4 min immediately after extrusion (test example No. 1-5). did.
- the B.H. treatment resistance was 1 5 2 MPa, 1 7 1 MPa, 2 1 3 MPa, 2 09 MPa, and 1 7 7 MPa, respectively, and the billet temperature Is 5 0 0.
- test example No. 1 1 4 min cooling rate less than 70 ° C / min immediately after extrusion (test example No. 1 1 5) are B.
- the resistance increase due to H. was small, and the judgment was X.
- the resistance increase due to B.H. was 60 MPa or more, and the judgment was ⁇ . Therefore, the comprehensive judgment of the test example No. 1 corresponding to the example is that the billet temperature is heated to 500 ° C or higher (No. 1-3, 1 1 4) is 0, other
- the overall judgment was X.
- Test Example No. 2 is an aluminum extruded profile containing 0.90% Si, 0.20% Cu, 0.40% Mg, and 0.09% Mn. .
- Test examples No. 2-1 to 2-4 are those when the billet temperature force during extrusion was changed to 4 60, 48 0, 5 0 0, 5 20 ° C. Compared the resistance of In addition, they and the extrusion The billet temperature is 500 ° C, and the cooling rate is 4 min immediately after extrusion.
- Example No. 2-1 For those with 60 M Pa or less (Test Example No. 2-1;), the resistance increase after B H treatment was less than 60 M Pa and the judgment was X. In other cases (test example No • '", 4 s 2-5), B.H. The increase in resistance after treatment is 60 MPa or more, and the judgment is ⁇ .
- the overall judgment of Example No. 2 is that the billet temperature is 480 ° C or less (Test Example No. 2-1, 2-2) is X, and the billet V ⁇ temperature is 500 ° C. C's (test example No. 2-3, 2-5)
- Test example No. 3 corresponding to Comparative Example 1 has S i of 0.59%, Cu of 0.20%, Mn of 0.20%, Mg of 0.60%, An aluminum extruded profile containing 0.02% C r.
- the S i content is outside the scope of the present invention.
- Extrude this material with a billet temperature of 500 ° C and a cooling rate of 4 min immediately after extrusion set at 70 ° CZmin or higher, and perform processing at 70 ° 0 2 11. H.
- the resistance to resistance is 10 MPa
- the increase in resistance due to B.H. is 10 MP.
- the evaluation was X.
- This material has a heat resistance of 197 MPa when subjected to normal tempering treatment, and can be applied to some structural members such as automobiles, but it has poor paint bake hardenability and may increase costs. is there.
- Test example No. 4 corresponding to the comparative example is an aluminum extruded profile containing 0.44% S i and 0.49% Mg.
- the S i content is outside the scope of the present invention.
- a 600-series aluminum extrusion type excellent in paint bake hardenability that can secure a heat resistance applicable to a structural member such as an automobile with a heat history corresponding to paint bake. It is possible to provide materials.
- the aluminum extruded profile of the present invention has a thermal history equivalent to paint baking of structural members for vehicles such as automobiles, for example, frame structural materials such as side sills, side members, cross members, and door frames. It can be applied to the receiving member.
Abstract
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Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US12/093,009 US20090047171A1 (en) | 2006-03-30 | 2007-03-30 | 6000-series aluminium extruded material superior in paint-baking hardenability and method for manufacturing the same |
EP07741160A EP2006404A4 (en) | 2006-03-30 | 2007-03-30 | EXAMPLE OF ALUMINUM 6000 EXCELLENT IN TERMS OF PAINT COOKING TEMPERATURE AND PROCESS FOR PRODUCING THE SAME |
CA002628229A CA2628229A1 (en) | 2006-03-30 | 2007-03-30 | 6000-series aluminum extruded material superior in paint-baking hardenability and method for manufacturing the same |
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JP2006095881A JP5166702B2 (ja) | 2006-03-30 | 2006-03-30 | 塗装焼付け硬化性に優れた6000系アルミニウム押出材及びその製造方法 |
JP2006-095881 | 2006-03-30 |
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US (1) | US20090047171A1 (ja) |
EP (1) | EP2006404A4 (ja) |
JP (1) | JP5166702B2 (ja) |
CN (1) | CN101356294A (ja) |
CA (1) | CA2628229A1 (ja) |
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CN104561681A (zh) * | 2014-12-22 | 2015-04-29 | 河南明泰铝业股份有限公司 | 汽车车身用6016铝合金薄板及其生产方法 |
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CN102912198B (zh) * | 2012-11-09 | 2015-01-07 | 虞海香 | 一种抑制大晶粒形成的铝合金加工方法 |
JP6005544B2 (ja) * | 2013-02-13 | 2016-10-12 | 株式会社神戸製鋼所 | 焼付け塗装硬化性に優れたアルミニウム合金板 |
CN112626385B (zh) * | 2020-11-04 | 2022-08-16 | 佛山科学技术学院 | 一种高塑性快速时效响应的铝合金及其制备方法和应用 |
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JPH11343533A (ja) * | 1998-03-31 | 1999-12-14 | Furukawa Electric Co Ltd:The | 車両ボディ用フレ―ム材及びその製造方法 |
JP2000328210A (ja) * | 1999-03-17 | 2000-11-28 | Nippon Light Metal Co Ltd | 断面形状が安定し機械的性質が良好なアルミニウムの略中空材の製造方法及び押出形材 |
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JPS59215453A (ja) * | 1983-05-23 | 1984-12-05 | Furukawa Alum Co Ltd | 溶接性にすぐれたAl−Mg−Si系合金押出材 |
JP2908929B2 (ja) * | 1992-03-04 | 1999-06-23 | 株式会社神戸製鋼所 | アルミニウム合金製自動車衝撃吸収部材 |
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2006
- 2006-03-30 JP JP2006095881A patent/JP5166702B2/ja not_active Expired - Fee Related
-
2007
- 2007-03-30 EP EP07741160A patent/EP2006404A4/en not_active Withdrawn
- 2007-03-30 WO PCT/JP2007/057724 patent/WO2007114521A1/ja active Application Filing
- 2007-03-30 US US12/093,009 patent/US20090047171A1/en not_active Abandoned
- 2007-03-30 CA CA002628229A patent/CA2628229A1/en not_active Abandoned
- 2007-03-30 CN CNA2007800014002A patent/CN101356294A/zh active Pending
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JPH09176806A (ja) | 1995-12-26 | 1997-07-08 | Furukawa Electric Co Ltd:The | 焼付け硬化性に優れるAl−Mg−Si系アルミニウム合金板材の製造方法 |
JPH11343533A (ja) * | 1998-03-31 | 1999-12-14 | Furukawa Electric Co Ltd:The | 車両ボディ用フレ―ム材及びその製造方法 |
JP2000328210A (ja) * | 1999-03-17 | 2000-11-28 | Nippon Light Metal Co Ltd | 断面形状が安定し機械的性質が良好なアルミニウムの略中空材の製造方法及び押出形材 |
JP2002235158A (ja) | 2001-02-05 | 2002-08-23 | Nippon Steel Corp | 曲げ加工性に優れた高強度アルミニウム合金押出形材の製造方法 |
JP2004204321A (ja) | 2002-12-26 | 2004-07-22 | Aisin Keikinzoku Co Ltd | 塗装焼付け硬化性に優れたアルミニウム合金押出形材およびその製造方法 |
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Cited By (1)
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CN104561681A (zh) * | 2014-12-22 | 2015-04-29 | 河南明泰铝业股份有限公司 | 汽车车身用6016铝合金薄板及其生产方法 |
Also Published As
Publication number | Publication date |
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EP2006404A1 (en) | 2008-12-24 |
JP2007270218A (ja) | 2007-10-18 |
US20090047171A1 (en) | 2009-02-19 |
CN101356294A (zh) | 2009-01-28 |
CA2628229A1 (en) | 2007-10-11 |
JP5166702B2 (ja) | 2013-03-21 |
EP2006404A4 (en) | 2009-12-16 |
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