CN102937235A - Magnesium alloy load-carrying structure plate and manufacturing method thereof - Google Patents
Magnesium alloy load-carrying structure plate and manufacturing method thereof Download PDFInfo
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- CN102937235A CN102937235A CN2012104393212A CN201210439321A CN102937235A CN 102937235 A CN102937235 A CN 102937235A CN 2012104393212 A CN2012104393212 A CN 2012104393212A CN 201210439321 A CN201210439321 A CN 201210439321A CN 102937235 A CN102937235 A CN 102937235A
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Abstract
The invention relates to a magnesium alloy load-carrying structure plate and a manufacturing method thereof. The load-carrying structure plate comprises a plate body and is characterized in that the plate body is made of a magnesium alloy material, one side surface of the plate body is a plane, upright grooves with mutually connected edges and regular polygon sections are densely distributed on the other side surface of the plate body, the wall thickness of mouths of the upright grooves is in a range from 1mm to 10mm, the inclination of the side walls of the upright grooves is in a range from 2 degrees to 10 degrees, the side length of the mouths of the upright grooves is in a range from 10mm to 200mm, the height of the upright grooves is in a range from 10mm to 50mm, and the thickness of the plate body is in a range from 1mm to 5mm. The manufacturing method utilizes a mould pressing method so as to achieve integrated forming. The magnesium alloy load-carrying structure plate and the manufacturing method thereof have the advantages that the structure is simple, and the whole mechanical property is good.
Description
Technical field
The present invention relates to a kind of magnesium alloy load-carrying construction plate and manufacture method thereof, belong to Structure of magnesium alloy design and manufacturing technology field thereof.
Background technique
Magnesium alloy materials is the lightest metallic material of quality in current engineering application, there is proportion little, specific strength is high, and specific stiffness is high, conduction, good heat conductivity, damping property is good, electromagnetic shielding is good, and easily cutting, be easy to the multiple advantages such as recovery, be widely used in Aeronautics and Astronautics, automobile, boats and ships, electronics and IT products, becoming 21 century has the metallic material of application prospect most.The AZ91D magnesium alloy that the casting industry application is arranged be most widely used at present, wrought magnesium alloy AZ31, the AZ61 applied in section bar, sheet material, AZ80, ZK60 etc.Yet the mechanical property of existing magnesium alloy materials is lower, this has seriously restricted application and the popularization of magnesium alloy materials.Extensively carried out at present the research work that improves magnesium alloy strength both at home and abroad, the novel magnesium alloy material of developing has higher mechanical property, the interpolation rare earth elements of wherein take improves the intensity of magnesium alloy as main, made at present the rare earth magnesium alloy material of some standard brands, and be applied in industrialized production.Yet these achievements in research have common shortcoming, that is exactly that the magnesium alloy Rare-Earth Content is higher.The high cost of material that causes of ree content is higher, and the market competitiveness is poor, has limited its application and scope.Comprehensive these factors, caused these materials still in laboratory stage, is difficult to large batch of production, and magnesium alloy application structurally is restricted.
Adopt rational structural design, from magnesium alloy, use the structure of product to improve its usability, not only can enlarge fast the using scope of magnesium alloy, and there is compatibility with existing processing technique, magnesium alloy materials, can realize the quick industrialized production of low cost, easy technique, for enlarging, the application of magnesium alloy materials in engineering is significant.
Summary of the invention
The objective of the invention is in order to enlarge magnesium alloy in structural engineering, the particularly application on load-carrying construction, provide a kind of magnesium alloy load-carrying construction plate and manufacture method thereof.
A kind of magnesium alloy load-carrying construction plate of the present invention comprises plate body, it is characterized in that: plate body is made by magnesium alloy materials, one side of plate body is plane, be densely covered with cross section be on the another side of plate body regular polygon, the interconnective vertical groove in edge, vertical notch wall thickness: 1mm～10mm, vertical groove angle of sides: 2 °～10 °, the vertical notch length of side: 10mm～200mm, vertical groove height: 10mm～50mm, plate body are thick: 1mm～5mm.
The limit number in the cross section of described vertical groove≤8.
The manufacture method of described magnesium alloy load-carrying construction plate is as follows:
Magnesium alloy materials is heated to 720 ℃ ± 5 ℃, and insulation, until fusing fully adopts the common argon gas of industry of 1.5～2L/min to be protected during the fusing magnesium alloy, keeps 720 ℃ ± 5 ℃ insulation 20min of melt temperature after fusing; Adopt liquid state squeezing die, press the overall construction design flexible mould core of magnesium alloy load-carrying construction plate, the flexible mould core is installed in liquid state squeezing die, cooling air channels is set in die bottom plate; Liquid state squeezing die is installed on oil hydraulic press, mounted mould and die preheating to 700 ℃ ± 5 ℃, spraying be take graphite as main liquid release agent, amount according to the required magnesium alloy materials of magnesium alloy load-carrying construction plate calculated quantitatively pours into magnesium alloy solution in mould, pushed subsequently, the pressurized air of logical 0.4MPa～0.6MPa carries out cooling, after keeping pressure 100S～160S, die sinking take out bottom surface be densely covered with the interconnective vertical groove structure in edge that cross section is regular polygon, top be the force bearing plate of slab construction, the mode of force bearing plate employing natural air cooling is cooling; The cleaning mould is cast next time.
Advantage of the present invention is as follows:
(1) raw material wide material sources, adopt the commercialization magnesium alloy materials that meets NBS, or the magnesium alloy materials of designed, designed;
(2) adopt the oil hydraulic press of industrial general, equipment has versatility;
(3) Design of Dies is flexible, can need dismounting flexibly according to structure, and simple process is convenient to safeguard that cost is lower;
(4) load-carrying construction flexibility and changeability, one side of plate body is " cellular structure " that is densely covered with the interconnective vertical groove in edge that cross section is regular polygon, this structure can be according to stressed difference, the wall thickness of flexible design " cellular structure ", gradient, size, height etc.;
(5) " cellular structure " of the present invention is different from traditional cellular structure, it has the single face slab construction, slab-thickness is variable as requested, " cellular structure " of another side has the many merits such as " honeycomb " variable size, variable wall thickness, alterable height, variable pitch, can accomplish to manufacture as required, flexible and changeable; " cellular structure " of its single face also is different from the forming method of existing cellular board, the load-carrying construction plate of liquid extrusion molding of the present invention is formed in one, dull and stereotyped is metallurgy combination with " cellular structure ", is different from the Split type adhered structure of existing cellular board, has good mechanical property;
(5) load-carrying construction plate manufacturing process of the present invention is easy, and workman's simple training can skillfully be grasped, and technical threshold is lower, is convenient to mass production;
(6) process engineering has versatility, goes for the shaping operation of the other materials such as aluminum alloy, Cuprum alloy, iron and steel;
(7) magnesium alloy strength is lower, by this kind of structural design, can significantly improve the load performance of magnesium alloy, is conducive to the expansion application of magnesium alloy on structural engineering.
The accompanying drawing explanation
Fig. 1 is plan view of the present invention;
Fig. 2 is that the A-A of Fig. 1 is to sectional view.
In figure: 1, plate body, 2, cross section be regular polygon vertical groove, R, vertical groove angle of sides.
Embodiment
Below embodiments of the present invention are further described:
(1) prepare: meet the magnesium alloy materials of GB or the magnesium alloy materials of designed, designed;
(2) smelting technology: magnesium alloy is heated to 720 ℃ ± 5 ℃; insulation is until fusing fully; during the fusing magnesium alloy, adopt the common argon gas of industry of 1.5～2L/min to be protected; equipment can adopt electric furnace of resistance type; the multiple melting unit such as gas range, main frequency furnace, keep 720 ℃ ± 5 ℃ insulation 20min of melt temperature after fusing.
(3) design of extrusion die and installation: the structure of " honeycombed " adopts integral design, by " cellular structure " design draft angle, design different flexible mould cores according to vertical notch wall thickness (1mm～10mm), gradient R (2 °～10 °), the vertical notch length of side (10mm～200mm), vertical groove height (10mm～50mm), be installed in liquid state squeezing die according to product needed, cooling air channels is set in die bottom plate.
(4) liquid extrusion casting technology: liquid state squeezing die is installed on oil hydraulic press, mounted mould and die preheating to 700 ℃ ± 5 ℃, spraying be take graphite as main liquid release agent, pour into precalculated quantitative magnesium alloy solution, pushed subsequently, the pressurized air of logical 0.4MPa～0.6MPa carries out cooling, after keeping pressure 100S～160S, it is " honeycomb " structure that bottom surface is taken out in die sinking, the load-carrying construction plate that the above is slab construction, and the cleaning mould is cast next time.
(5) it is cooling that the cellular board of extruding adopts the mode of natural air cooling.
(1) raw material
Employing meets the AZ31B magnesium alloy of GB.
(2) manufacturing process
(1) prepare: the AZ31B magnesium alloy materials that meets GB;
(2) smelting technology: magnesium alloy is heated to 720 ℃, and insulation is until fusing fully adopts the common argon gas of industry of 2L/min to be protected during the fusing magnesium alloy, and equipment adopts electric furnace of resistance type, keeps 720 ℃ of insulation 20min of melt temperature after fusing.
(3) installation of extrusion die: be 1.5m by length, width is 0.5m, the partial design thickness 3mm of load-carrying construction plate plate body 1, the parameter designing of vertical groove 2: the vertical notch length of side is 20mm, vertical groove height 20mm, vertical notch wall thickness is 5mm, " honeycomb " shape flexible mould core that vertical slot slope R is 5 °, be installed in fixed mould, on the 200 tons of oil hydraulic presses of packing into.
(4) liquid extrusion casting technology: adopt rock gas by mould and die preheating to 705 ℃, and in mould the graphite spraying releasing agent, pour into approximately 8 kilograms of magnesium alloy solution, pushed subsequently, logical 0.5MPa pressurized air carries out cooling, and after keeping pressure 120S, it is " honeycomb " structure that bottom surface is taken out in die sinking, the load-carrying construction plate that the above is slab construction, cleaning mould and load-carrying construction plate.
(5) the load-carrying construction plate after clearing up is naturally cooling, carries out afterwards the load experiment, and after testing, the ability to bear of every square metre reaches 2.4 tons, and the distortion of load-carrying construction plate is less than 0.5mm.
(1) raw material
Employing meets the AZ91D magnesium alloy of GB.
(2) manufacturing process
(1) prepare: the AZ91D magnesium alloy materials that meets GB;
(2) smelting technology: magnesium alloy is heated to 715 ℃, and insulation is until fusing fully adopts the common argon gas of industry of 1.8L/min to be protected during the fusing magnesium alloy, and equipment adopts electric furnace of resistance type, keeps 715 ℃ of insulation 20min of melt temperature after fusing.。
(3) installation of extrusion die: be 1.2m by length, width is 0.8m, the partial design thickness 3mm of load-carrying construction plate plate body 1, the parameter designing of vertical groove 2: the vertical notch length of side is 40mm, vertical groove height 15mm, vertical notch wall thickness is 5mm, vertical slot slope R be 3 ° " " shape flexible mould core is installed in fixed mould honeycomb, on the 200 tons of oil hydraulic presses of packing into.
(4) liquid extrusion casting technology: adopt rock gas by mould and die preheating to 700 ℃ left and right, and in mould the graphite spraying releasing agent, pour into approximately 11 kilograms of magnesium alloy solution, pushed subsequently, logical 0.4MPa pressurized air carries out cooling, and after keeping pressure 140S, it is " honeycomb " structure that bottom surface is taken out in die sinking, the load-carrying construction plate that the above is slab construction, cleaning mould and load-carrying construction plate.
(5) cellular board after clearing up is naturally cooling, carries out afterwards the load experiment, and after testing, the ability to bear of every square metre reaches 2.2 tons, and the distortion of load-carrying construction plate is less than 0.5mm.
Claims (2)
1. a magnesium alloy load-carrying construction plate, comprise plate body, it is characterized in that: plate body is made by magnesium alloy materials, one side of plate body is plane, the interconnective vertical groove in edge that to be densely covered with cross section on the another side of plate body be regular polygon, vertical notch wall thickness: 1mm～10mm, vertical groove angle of sides: 2 °～10 °, the vertical notch length of side: 10mm～200mm, vertical groove height: 10mm～50mm, plate body are thick: 1mm～5mm.
2. the manufacture method of a magnesium alloy load-carrying construction plate according to claim 1, it is characterized in that: magnesium alloy materials is heated to 720 ℃ ± 5 ℃, insulation is until fusing fully, during the fusing magnesium alloy, adopt the common argon gas of industry of 1.5～2L/min to be protected, keep 720 ℃ ± 5 ℃ insulation 20min of melt temperature after fusing; Adopt liquid state squeezing die, press the overall construction design flexible mould core of magnesium alloy load-carrying construction plate, the flexible mould core is installed in liquid state squeezing die, cooling air channels is set in die bottom plate; Liquid state squeezing die is installed on oil hydraulic press, mounted mould and die preheating to 700 ℃ ± 5 ℃, spraying be take graphite as main liquid release agent, amount according to the required magnesium alloy materials of magnesium alloy load-carrying construction plate calculated quantitatively pours into magnesium alloy solution in mould, pushed subsequently, the pressurized air of logical 0.4MPa～0.6MPa carries out cooling, after keeping pressure 100S～160S, die sinking take out bottom surface be densely covered with the interconnective vertical groove structure in edge that cross section is regular polygon, top be the force bearing plate of slab construction, the mode of force bearing plate employing natural air cooling is cooling.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106103246A (en) * | 2014-03-12 | 2016-11-09 | 宝马股份公司 | The surface texture of the loss of weight on the component manufacturing by casting method |
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Application publication date: 20130220 |