CN104313423B - The manufacture method of magnesium base composite material wallboard section bar - Google Patents
The manufacture method of magnesium base composite material wallboard section bar Download PDFInfo
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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
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
- C22C1/1047—Alloys containing non-metals starting from a melt by mixing and casting liquid metal matrix composites
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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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Abstract
The manufacture method of magnesium base composite material wallboard section bar, the present invention relates to a kind of method manufacturing magnesium base composite material wallboard section bar, and it is in order to solve the problem that in existing manufacture wallboard section bar, the easy vexed car of extrusion process, the flexibility of section bar and twist are higher.Manufacture method: one, melting raw material in smelting furnace；Two, SiC particulate is added；Three, the flat casting rod of magnesium base composite material it is cast as；Four, flat casting rod is cut off；Five, car descale；Six, homogenizing annealing is carried out；Seven, the magnesium base composite material rectangle ingot after annealing is extruded；Eight, magnesium base composite material wallboard section bar is heated to 150 DEG C～180 DEG C, then carries out stretcher leveling；Nine, truncate and tail end.The flexibility every meter being obtained magnesium base composite material wallboard section bar by the manufacture method of the present invention is less than 1.5mm, and in every meter of length at any position of section bar, the twist around the longitudinal axis is less than 1.5 °, and extrusion process does not occur vexed car.
Description
Technical field
The present invention relates to a kind of method manufacturing magnesium base composite material wallboard section bar.
Background technology
Magnesium base composite material has advantage lightweight, that specific strength is high, specific stiffness is high and wearability is good, is increasingly widely used in Aero-Space, military field and automobile and other industries.The features such as wherein particle reinforced magnesium base compound material has low cost, and preparation technology is simple, have been increasingly becoming the research emphasis in magnesium base composite material field.Existing wallboard section bar material is magnesium alloy, round container extruding is used to obtain, deformation degree of extrusion is big, the vexed car of extrusion process, section bar overall dimensions, linearity are beyond the scope of standard-required, and flexibility every meter is 2.5mm～3.5mm, and in every meter of length at any position of section bar, the twist around the longitudinal axis is 2.0 °～3.0 °, wave height is 1.0mm～2.0mm, it is impossible to meet the requirement of user.
Summary of the invention
The present invention is to solve the problem that in existing manufacture wallboard section bar, the easy vexed car of extrusion process, the flexibility of section bar and twist are higher, and the manufacture method of a kind of magnesium base composite material wallboard section bar provided.
The manufacture method of magnesium base composite material wallboard section bar of the present invention follows these steps to realize:
One, it is Al:0.2%, Mn:1.3%～2.2%, Zn:0.3%, Ce:0.15%～0.35%, Fe :≤0.05%, Si :≤0.1%, Cu :≤0.05%, Ni :≤0.007% by the mass percent of element, surplus is that Mg weighs aluminium ingot, magnesium manganese intermediate alloy, zinc ingot metal, magnesium cerium intermediate alloy, magnesium ferrum intermediate alloy, magnesium silicon intermediate alloy, copper ingot, magnesium nickel intermediate alloy and magnesium ingot respectively as raw material, add the raw material in dry smelting furnace, melting 3.5h～5h at temperature is 760 DEG C～780 DEG C, obtains magnesium alloy liquation；
Two, preheating SiC particulate, preheating temperature is 490 DEG C～510 DEG C, and temperature retention time is 1.5h～2.5h, joins in the magnesium alloy liquation that step one obtains by the SiC particulate after preheating, stirs 10min～15min, obtain magnesium base composite material liquation；
Three, the magnesium base composite material liquation that step 2 is prepared casting temperature be 710 DEG C～740 DEG C, casting speed be 2.0m/h～2.4m/h, cooling water intensity be 0.05MPa～0.10MPa and cooling water temperature be 10 DEG C～20 DEG C under conditions of be cast as the flat casting rod of the magnesium base composite material that the ratio of width to height is 3.2～3.6 of cross section；
Four, the flat casting rod of magnesium base composite material step 3 obtained is cut off, the flat casting rod after being cut off；
Five, car goes the casting oxide skin on the flat casting rod surface after cutting off, and obtains the magnesium base composite material rectangle ingot of descale；
Six, the magnesium base composite material rectangle ingot of descale is carried out homogenizing annealing 10h～15h in the annealing furnace that annealing temperature is 380 DEG C～400 DEG C, furnace cooling annealed after magnesium base composite material rectangle ingot；
Seven, the magnesium base composite material rectangle ingot after annealing is put into and is heated to 360 DEG C～430 DEG C in heating furnace, it is then placed in the flat extruding cylinder of extruder, pressure be 500MPa～550MPa, temperature be 360 DEG C～430 DEG C under conditions of with the rate of outflow as 0.3m/min～0.7m/min extrudes, prepare magnesium base composite material wallboard section bar；
Eight, magnesium base composite material wallboard section bar is heated to 150 DEG C～180 DEG C, then carries out stretcher leveling stretching, and carry out roll straightening and artificial aligning, the magnesium base composite material wallboard section bar after being aligned successively；
Nine, cut head end and the tail end of the magnesium base composite material wallboard section bar after aligning, complete the manufacture of magnesium base composite material wallboard section bar；
Wherein the addition of step 2 SiC particulate accounts for the 3%～6% of magnesium alloy liquation volume fraction.
The manufacture method of the magnesium base composite material wallboard section bar of the present invention rational proportion by alloying component, homogenizing annealing is used to eliminate microsegregation and casting stress, conservative control ingot casting composition proportion, ensure that the stable components of ingot casting, even tissue so that magnesium base composite material has good plastic processing deformation ability.
Wallboard section bar is thin as a kind of width and special section bar with many strengthening rib strips.Using flat extruding cylinder extruded wall profile material, owing to the basal area of flat extruding cylinder is little, shape is similar with wallboard profile, and therefore compared with existing round container, the extrusion coefficient of flat extruding cylinder is little, higher than pressure, and metal flow is uniform, the most vexed car；The wallboard profile size that it is extruded is accurate, it is easy to aligning.Magnesium matrix has Patterns for Close-Packed Hexagonal Crystal structure, and symmetry is low, and its axle ratio (c/a) value is 1.623, and close to preferable solid matter value 1.633, room temperature slip system is few, cold machine-shaping difficulty.If the processing temperature of magnesium base composite material wallboard section bar is less than 150 DEG C, the plastic deformation of polycrystalline magnesium is only limitted to basal plane { 0001}Sliding and the conical surface Twin, only have 3 geometry slip systems and 2 independent slip-system during deformation, easily produce big stress at grain boundaries and concentrate.And magnesium base composite material wallboard section bar is heated to 150 DEG C～180 DEG C by step 8 of the present invention, during higher than 150 DEG C, temperature raises the amplitude adding atomic vibration, and the difference in strong plane and time solid matter face reduces, makes additional pyramid slide surface Starting, now plasticity is greatly improved；Simultaneously because softening recovery and recrystallization occurring and causing, also magnesium matrix can be made to have higher plasticity, preheating straightening pull technique is used so follow-up, reach the surface quality requirements of wallboard section bar, make the flexibility every meter of wallboard section bar less than 1.5mm, in every meter of length at any position of section bar, the twist around the longitudinal axis is less than 1.5 °, and wave height is less than 0.5mm.
Accompanying drawing explanation
Fig. 1 is the cross-sectional structure schematic diagram of the flat casting rod of magnesium base composite material that step 3 of the present invention obtains, and wherein b represents the width of cross section, and h represents the height of cross section, and R represents the radius of circular arc.
Detailed description of the invention
Detailed description of the invention one: the manufacture method of present embodiment magnesium base composite material wallboard section bar follows these steps to implement:
One, it is Al:0.2%, Mn:1.3%～2.2%, Zn:0.3%, Ce:0.15%～0.35%, Fe :≤0.05%, Si :≤0.1%, Cu :≤0.05%, Ni :≤0.007% by the mass percent of element, surplus is that Mg weighs aluminium ingot, magnesium manganese intermediate alloy, zinc ingot metal, magnesium cerium intermediate alloy, magnesium ferrum intermediate alloy, magnesium silicon intermediate alloy, copper ingot, magnesium nickel intermediate alloy and magnesium ingot respectively as raw material, add the raw material in dry smelting furnace, melting 3.5h～5h at temperature is 760 DEG C～780 DEG C, obtains magnesium alloy liquation；
Two, preheating SiC particulate, preheating temperature is 490 DEG C～510 DEG C, and temperature retention time is 1.5h～2.5h, joins in the magnesium alloy liquation that step one obtains by the SiC particulate after preheating, stirs 10min～15min, obtain magnesium base composite material liquation；
Three, the magnesium base composite material liquation that step 2 is prepared casting temperature be 710 DEG C～740 DEG C, casting speed be 2.0m/h～2.4m/h, cooling water intensity be 0.05MPa～0.10MPa and cooling water temperature be 10 DEG C～20 DEG C under conditions of be cast as the flat casting rod of the magnesium base composite material that the ratio of width to height is 3.2～3.6 of cross section；
Four, the flat casting rod of magnesium base composite material step 3 obtained is cut off, the flat casting rod after being cut off；
Five, car goes the casting oxide skin on the flat casting rod surface after cutting off, and obtains the magnesium base composite material rectangle ingot of descale；
Six, the magnesium base composite material rectangle ingot of descale is carried out homogenizing annealing 10h～15h in the annealing furnace that annealing temperature is 380 DEG C～400 DEG C, furnace cooling annealed after magnesium base composite material rectangle ingot；
Seven, the magnesium base composite material rectangle ingot after annealing is put into and is heated to 360 DEG C～430 DEG C in heating furnace, it is then placed in the flat extruding cylinder of extruder, pressure be 500MPa～550MPa, temperature be 360 DEG C～430 DEG C under conditions of with the rate of outflow as 0.3m/min～0.7m/min extrudes, prepare magnesium base composite material wallboard section bar；
Eight, magnesium base composite material wallboard section bar is heated to 150 DEG C～180 DEG C, then carries out stretcher leveling stretching, and carry out roll straightening and artificial aligning, the magnesium base composite material wallboard section bar after being aligned successively；
Nine, cut head end and the tail end of the magnesium base composite material wallboard section bar after aligning, complete the manufacture of magnesium base composite material wallboard section bar；
Wherein the addition of step 2 SiC particulate accounts for the 3%～6% of magnesium alloy liquation volume fraction.
In the range of certain deformation extent, extrusion coefficient is the biggest, and the intensity of wallboard section bar, hardness are the highest.When reducing extrusion coefficient, the intensity of wallboard section bar incurs loss.Therefore, present embodiment uses SiC particulate to strengthen magnesium base composite material.SiC particulate, as the enhancing phase of magnesium alloy substrate, is distributed mainly between crystal boundary, it is possible to stops crystal boundary and the motion of dislocation, causes intensity to increase substantially, and is reduced by deformation degree of extrusion to make up and causes the loss of strength of wallboard section bar.
Present embodiment step 9 retains cast sturcture due to the front end of extruded product, and mechanical performance is on the low side, it should excision；Also should excise owing to the metal filled discontented extruding contracting tail formed etc. destroys the successional defect of metal at tail end.
Detailed description of the invention two: present embodiment step one unlike detailed description of the invention one adds the raw material in dry smelting furnace, melting 4h at temperature is 770 DEG C.Other step and parameter are identical with detailed description of the invention one.
Detailed description of the invention three: the granularity of the SiC particulate described in present embodiment step 2 unlike detailed description of the invention one or two is 5 μm～8 μm.Other step and parameter are identical with detailed description of the invention one or two.
Detailed description of the invention four: it is circular arc that present embodiment step 3 unlike one of detailed description of the invention one to three is cast as the both sides of cross section, the width b of cross section is 545～565mm, and highly h is the flat casting rod of magnesium base composite material of 150～170mm.Other step and parameter are identical with one of detailed description of the invention one to three.
The middle part of the cross section of the flat casting rod of magnesium base composite material described in present embodiment is rectangle, and the short brink at rectangle is semicircle, and the radius R of semicircle is h/2.
Detailed description of the invention five: a length of 900mm～950mm of the flat casting rod after present embodiment step 4 cut-out unlike one of detailed description of the invention one to four.Other step and parameter are identical with one of detailed description of the invention one to four.
Detailed description of the invention six: present embodiment step 6 unlike one of detailed description of the invention one to five carries out homogenizing annealing 12h in the annealing furnace that annealing temperature is 390 DEG C.Other step and parameter are identical with one of detailed description of the invention one to five.
Detailed description of the invention seven: present embodiment unlike one of detailed description of the invention one to six step 7 pressure be 530MPa, temperature be 390 DEG C under conditions of extrude with the rate of outflow for 0.5m/min.Other step and parameter are identical with one of detailed description of the invention one to six.
Detailed description of the invention eight: present embodiment step 8 magnesium base composite material wallboard section bar unlike one of detailed description of the invention one to seven is heated to 160 DEG C.Other step and parameter are identical with one of detailed description of the invention one to seven.
Detailed description of the invention nine: present embodiment drawing deformation of step 8 stretcher leveling stretching unlike one of detailed description of the invention one to eight is 1%～3%.Other step and parameter are identical with one of detailed description of the invention one to eight.
Embodiment one: the manufacture method of the present embodiment magnesium base composite material wallboard section bar follows these steps to implement:
One, it is Al:0.2%, Mn:1.8%, Zn:0.3%, Ce:0.2%, Fe:0.03%, Si:0.02%, Cu:0.02%, Ni:0.003% by the mass percent of element, surplus is that Mg weighs aluminium ingot, magnesium manganese intermediate alloy, zinc ingot metal, magnesium cerium intermediate alloy, magnesium ferrum intermediate alloy, magnesium silicon intermediate alloy, copper ingot, magnesium nickel intermediate alloy and magnesium ingot respectively as raw material, add the raw material in dry smelting furnace, melting 4h at temperature is 770 DEG C, obtains magnesium alloy liquation；
Two, the SiC particulate that granularity is 6 μm is preheated, preheating temperature is 500 DEG C, temperature retention time is 2.0h, SiC particulate after preheating is quickly adding in the magnesium alloy liquation that step one prepares, stirring 13min, the addition of SiC particulate is the 4% of magnesium alloy liquation volume fraction, obtains magnesium base composite material liquation；
Three, the magnesium base composite material liquation that step 2 is prepared casting temperature be 730 DEG C, casting speed be 2.2m/h, cooling water intensity be 0.08MPa and cooling water temperature be 15 DEG C under conditions of be cast as the flat casting rod of magnesium base composite material of a width of 555mm of cross section, a height of 160mm；
Four, the flat casting rod of magnesium base composite material step 2 obtained is cut off, the flat casting rod of a length of 930mm after being cut off；
Five, car goes the casting oxide skin on the flat casting rod surface after cutting off, and obtains the magnesium base composite material rectangle ingot of the descale of a width of 545mm, a height of 150mm；
Six, the magnesium base composite material rectangle ingot of descale is carried out in the annealing furnace that annealing temperature is 390 DEG C homogenizing annealing 12h, furnace cooling, the magnesium base composite material rectangle ingot after being annealed；
Seven, the magnesium base composite material rectangle ingot after annealing is put into and is heated to 400 DEG C in heating furnace, it is then placed in the flat extruding cylinder of extruder, pressure be 530MPa, temperature be 390 DEG C under conditions of extrude with the rate of outflow for 0.5m/min, prepare magnesium base composite material wallboard section bar；
Eight, magnesium base composite material wallboard section bar being heated to 160 DEG C, then carry out stretcher leveling stretching, drawing deformation is 2%, and carries out roll straightening and artificial aligning, the magnesium base composite material wallboard section bar after being aligned successively；
Nine, cut 150mm head end and the 300mm tail end of the magnesium base composite material wallboard section bar after aligning, complete the manufacture of magnesium base composite material wallboard section bar.
The flexibility every meter of the magnesium base composite material wallboard section bar that the present embodiment obtains is 1.2mm, and in every meter of length at any position of section bar, the twist around the longitudinal axis is 1 °, and wave height is 0.3mm.In the present embodiment, flexibility, the stubborn degree of torsion, wave height press GB/T14846-2008 standard testing.Surface of profile quality is good, and dimensional accuracy is high, and yield rate is 80%, stable mechanical property, and its tensile strength is 350MPa, and elongation percentage is 6.5%.Extrusion process is owing to extrusion coefficient is little, ratio pressure is high, and required extruding force is little, and metal flow is uniform, therefore, vexed car phenomenon does not occurs.
Claims (9)
1. the manufacture method of magnesium base composite material wallboard section bar, it is characterised in that be to follow these steps to realize:
One, it is Al:0.2%, Mn:1.3%～2.2%, Zn:0.3%, Ce:0.15%～0.35%, Fe :≤0.05%, Si :≤0.1%, Cu :≤0.05%, Ni :≤0.007% by the mass percent of element, surplus is that Mg weighs aluminium ingot, magnesium manganese intermediate alloy, zinc ingot metal, magnesium cerium intermediate alloy, magnesium ferrum intermediate alloy, magnesium silicon intermediate alloy, copper ingot, magnesium nickel intermediate alloy and magnesium ingot respectively as raw material, add the raw material in dry smelting furnace, melting 3.5h～5h at temperature is 760 DEG C～780 DEG C, obtains magnesium alloy liquation；
Two, preheating SiC particulate, preheating temperature is 490 DEG C～510 DEG C, and temperature retention time is 1.5h～2.5h, joins in the magnesium alloy liquation that step one obtains by the SiC particulate after preheating, stirs 10min～15min, obtain magnesium base composite material liquation；
Three, the magnesium base composite material liquation that step 2 is prepared casting temperature be 710 DEG C～740 DEG C, casting speed be 2.0m/h～2.4m/h, cooling water intensity be 0.05MPa～0.10MPa and cooling water temperature be 10 DEG C～20 DEG C under conditions of be cast as the flat casting rod of the magnesium base composite material that the ratio of width to height is 3.2～3.6 of cross section；
Four, the flat casting rod of magnesium base composite material step 3 obtained is cut off, the flat casting rod after being cut off；
Five, car goes the casting oxide skin on the flat casting rod surface after cutting off, and obtains the magnesium base composite material rectangle ingot of descale；
Six, the magnesium base composite material rectangle ingot of descale is carried out homogenizing annealing 10h～15h in the annealing furnace that annealing temperature is 380 DEG C～400 DEG C, furnace cooling annealed after magnesium base composite material rectangle ingot；
Seven, the magnesium base composite material rectangle ingot after annealing is put into and is heated to 360 DEG C～430 DEG C in heating furnace, it is then placed in the flat extruding cylinder of extruder, pressure be 500MPa～550MPa, temperature be 360 DEG C～430 DEG C under conditions of with the rate of outflow as 0.3m/min～0.7m/min extrudes, prepare magnesium base composite material wallboard section bar；
Eight, magnesium base composite material wallboard section bar is heated to 150 DEG C～180 DEG C, then carries out stretcher leveling stretching, and carry out roll straightening and artificial aligning, the magnesium base composite material wallboard section bar after being aligned successively；
Nine, cut head end and the tail end of the magnesium base composite material wallboard section bar after aligning, complete the manufacture of magnesium base composite material wallboard section bar；
Wherein the addition of step 2 SiC particulate accounts for the 3%～6% of magnesium alloy liquation volume fraction.
The manufacture method of magnesium base composite material wallboard section bar the most according to claim 1, it is characterised in that step one adds the raw material in dry smelting furnace, melting 4h at temperature is 770 DEG C.
The manufacture method of magnesium base composite material wallboard section bar the most according to claim 1, it is characterised in that the granularity of the SiC particulate described in step 2 is 5 μm～8 μm.
The manufacture method of magnesium base composite material wallboard section bar the most according to claim 1, it is characterised in that it is circular arc that step 3 is cast as the both sides of cross section, the width of cross section is 545～565mm, and height is the flat casting rod of magnesium base composite material of 150～170mm.
The manufacture method of magnesium base composite material wallboard section bar the most according to claim 1, it is characterised in that a length of 900mm～950mm of the flat casting rod after step 4 cut-out.
The manufacture method of magnesium base composite material wallboard section bar the most according to claim 1, it is characterised in that step 6 carries out homogenizing annealing 12h in the annealing furnace that annealing temperature is 390 DEG C.
The manufacture method of magnesium base composite material wallboard section bar the most according to claim 1, it is characterised in that step 7 pressure be 530MPa, temperature be 390 DEG C under conditions of extrude with the rate of outflow for 0.5m/min.
The manufacture method of magnesium base composite material wallboard section bar the most according to claim 1, it is characterised in that step 8 magnesium base composite material wallboard section bar is heated to 160 DEG C.
The manufacture method of magnesium base composite material wallboard section bar the most according to claim 1, it is characterised in that the drawing deformation of step 8 stretcher leveling stretching is 1%～3%.
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| CN105268758A (en) * | 2015-12-02 | 2016-01-27 | 华盛荣控股有限公司 | Magnesium alloy building template as well as preparation device and preparation method thereof |
| CN105537865B (en) * | 2015-12-15 | 2019-03-26 | 青海柴达木青元泛镁科技有限公司 | A kind of preparation method of high-intensitive, low-density lightweight cycle frame |
| CN107119855B (en) * | 2017-05-27 | 2022-08-26 | 东南大学 | Structure for improving anchoring performance of composite bar and extrusion forming method thereof |
| CN113857871B (en) * | 2021-09-24 | 2024-05-28 | 广西柳州银海铝业股份有限公司 | Production method for eliminating ingot cracks of 4XXX aluminum alloy wide hot rolled plate |
| CN114990459B (en) * | 2022-06-30 | 2023-03-31 | 重庆科技学院 | Magnesium alloy plate and method for preparing magnesium alloy plate through bidirectional composite torsion |
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| CN1718792A (en) * | 2005-07-14 | 2006-01-11 | 上海交通大学 | Preparation method of titanium particle reinforced magnesium base composite material |
| CN103898378B (en) * | 2014-04-21 | 2015-12-02 | 黑龙江工程学院 | High-magnesium aluminum alloy cold drawn bar and manufacture method thereof |
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Inventor after: Wen Lihua Inventor after: Ji Zesheng Inventor after: Huang Zhiqiu Inventor after: Ning Huiyan Inventor after: Li Yunfeng Inventor after: Wang Qingyu Inventor after: Yang Jiaming Inventor before: Wen Lihua Inventor before: Ji Zesheng Inventor before: Ning Huiyan Inventor before: Weng Jiangxiang Inventor before: Bao Chunping Inventor before: Tang Yuling Inventor before: Wang Xiaohong |
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