CN1206059C - Metal compositie plate strap and its manufacturing method - Google Patents
Metal compositie plate strap and its manufacturing method Download PDFInfo
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- CN1206059C CN1206059C CN 03139894 CN03139894A CN1206059C CN 1206059 C CN1206059 C CN 1206059C CN 03139894 CN03139894 CN 03139894 CN 03139894 A CN03139894 A CN 03139894A CN 1206059 C CN1206059 C CN 1206059C
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Abstract
The present invention relates to a metal composite material plate band and a manufacturing method thereof. Powder is rolled into a plate band blank and then is infiltrated in metal infiltration liquid treated by heating and heat preservation, and molten metal is made to infiltrate into the powder plate band blank to fill clearances among powder particles. Then, the powder plate band bland is led out from the infiltration liquid and cooled, and after the molten metal infiltrating into the powder particles is solidified, a metal composite material plate band is formed. The method of the present invention can realize the large-scale mechanical and automatic production of metal alloy band material and metal composite material band material, and the material has the characteristics of stable performance, repetitiveness of microstructure, low energy consumption and high productive efficiency.
Description
(1) technical field
The present invention relates to strip material technology field, specifically be meant a kind of metal composite strip and manufacture method thereof.
(2) background technology
In strip material field, " matrix material " is meant the material that is compounded to form by two or more heterogeneous, special-shaped, different in nature material, comprises alloy; " powder " is meant the aggregate of size less than the 1mm discrete particle, the powder particle shape can be needle-like, horn shape, dendroid, fibrous, sheet, granular, warty, (" powder metallurgy manual of standards such as spherical, irregularly shaped, product standard ", the Huang Baiyun chief editor, press of Zhongnan Polytechnic Univ, in October, 2000 first version).
At present, the production method of metal plate and belt material mainly contains continuous casting and rolling or discontinuous formula, its process is to insert dummy ingot at crystallizer one end, form the end of crystallizer, constantly pour into alloy liquid in the crystallizer, reach regular hour or volume, start billet withdrawal device, make strand pull out crystallizer with dummy ingot.After the secondary cooling, be rolled formation sheet material through roll to solidifying slab again, thin slab is rolling directly, sometimes strand becomes certain-length to be called semicontinuous casting, most strands are pressed certain size and are cut off, and are rolled after cooling, manufacture cold-reduced sheet.The shortcoming of strand rolling technology is: be transformed into solid-state crystal by liquid atomic in the liquid alloy cooled and solidified process, must experience crystalline forming core growth process, the as-cast structure of Huo Deing at last, though take the measure of various crystal grain thinnings, be difficult to also guarantee that all crystal grain is tiny evenly, and also be difficult to avoid as the defective of as-cast structures such as pore, loose, segregation, coarse-grain.Strand must be by follow-up multi-pass operation of rolling crystal grain thinning, and reduces the subsurface defect of as-cast structure.Because strand has become solid when rolling, make metal solid produce bigger viscous deformation and need consume very big energy.If carry out cold rollingly after strand cooling again, the energy of blank deformation consumption is more, and rolling equipment bears huge rolling load, and roll weares and teares easily.After cold rolling being over, also need sheet material is carried out the subsequent anneal heat treatment step.And strand is rolling be over after, the degree of refinement of crystal grain is limited, the casting flaw of strand inside also can't all be got rid of, and can only reduce the part defect structure to a certain extent, therefore also is difficult to the microstructure of switchboard carrying material by the technology of strand Rolling Production strip material.
Roll compacting is that powder is sent between the roll, and during roll rotation, because the effect of frictional force, powder is brought in the roll gap, by the roll compaction powder, forms a kind of method of strip.Its technological process is: powder rolls into and carries out sintering after the made-up belt, carries out cold rollingly again, steps back thermal treatment afterwards.When producing matrix material with the roll compacting method, its process is that different powder is mixed in together, and then is rolled and sintering.It is a procedure that must experience that made-up belt is carried out sintering.Sintering process must be carried out high temperature sintering under special protective atmosphere, and the time that continues is long, and the energy of consumption is many.In sintering process, the diffusion of material, mobile and chemical reaction take place, through after the sintering process between the powder grain, the primary powder grain no longer exists, for manocrystalline powders, crystal grain is easy to grow up in sintering process, consequently is difficult to the character that keeps nanocrystalline.By the powder sheet material that rolling sintering makes, always there is certain hole in inside, reach higher density, then needs the rolling of multi-pass and annealing thermal treatment, and this just causes the rising of plate manufacturing cost.
(3) summary of the invention
Purpose of the present invention is exactly in order to solve above-mentioned the deficiencies in the prior art part, and a kind of metal composite strip and manufacture method thereof are provided.This method is compared with common strand strips or plates, and its microstructure crystal grain is tiny evenly to be compared with the roll compacting agglomerated material, the density height of material, and production efficiency height, and energy consumption is low, and product has good properties for follow.
The manufacture method of a kind of metal composite strip of the present invention, it is characterized in that, it comprises the steps and processing condition: roll compacting is become strip blank, then by being in the infiltration roll in the metal infiltration liquid that heat tracing is handled in the infiltration groove, it is rolling that strip blank is incorporated in the metal infiltration liquid infiltration, the molten metal infiltration is entered in the powder strip blank, gap between the powder filler particle, then the powder strip blank is drawn the infiltration liquid postcooling, after molten metal between the infiltration powder particle solidifies, promptly form the metal composite strip.
In order to realize the present invention better, described strip blank can carry out sintering earlier, and then infiltration; Described roll compacting and strip blank infiltration are all carried out under vacuum environment; Described powder can carry out heat tracing earlier, and hot rolling is infiltrated after making strip blank again; Described powder adopts the fine size powder to be rolled, to infiltrate, and can be nanometer powder; Described powder can be one or more mixtures in metal-powder, ceramic powder or the non-metal powder; Described metal infiltration liquid is molten metal or the alloy liquid that is in keeping warm mode after the METAL HEATING PROCESS fusing.
A kind of metal composite strip of the present invention forms by method for preparing.
The present invention compared with prior art has following advantage and beneficial effect:
The operational path and the rolling strip material manufacturing technique of the conventional powder difference of infiltration are the strip blank not to be carried out sintering after the roll compacting, infiltrate but strip blank introduced in the metallic substance liquation that fusing point is lower than the powdered material fusing point, the powder particle material can not melt in infiltration process, the liquid metal infiltration liquid infiltrates between the powder particle, after solidifying, the original particle size size of powder is held, and forms the strip material of thin brilliant microtexture, therefore has good performance.Because pressure condition rolling, infiltration process down is than agglomerating time much shorter, the energy of consumption is few, so efficient height, the cost of production powder strip are low.And the method by infiltration can be reduced to the porosity in the material degree identical with dense material.After powdered material was rolled into strip blank, hole in the strip blank was a three-dimensional communication.After getting rid of intrapore gas, among liquid the time, liquid will infiltrate between the strip blank hole with the strip blank infiltration, and when the hole in the strip blank all after the full of liquid, liquid wherein also is three-dimensional communication.After strip blank is extracted from liquid, and liquid solidifies, just formed the matrix of three-dimensional communication, also just making matrix is the strip material that three-dimensional space is communicated with.When adopting ceramics powder to be rolled, the molten metal that infiltrates is then then produced ceramic on metal complex plate strip material.Because body material is a metal, can carry out viscous deformation and mechanical workout to the sintering metal strip, makes the part of different shape and size.
(4) description of drawings
Fig. 1 is the technical process and the structural representation of the embodiment of the invention one;
Fig. 2 is the technical process and the structural representation of the embodiment of the invention two.
(5) embodiment
Below in conjunction with drawings and Examples, the present invention is done detailed description further.
Embodiment one
As shown in Figure 1, Al
2O
3Ceramic powder 1 places feed bin 2, under action of gravity, be between roll 3 and the roll 15, roll 3 and roll 15 are in rotation process, under the frictional force between roll and the powder drives, powder 1 enter continuously be subjected between two rolls rolling, roll compacting can be vertical powder feeding, horizontal powder feeding or send between the roll at the steering handle powder that tilts that when level was rolling, powder was delivered to roll by paper tape or by special loader.In roll, can force supplying powder, perhaps adopt additive method to realize with screw feeder.Improved the density that powder particle is piled up owing to force, therefore forced the density and the thickness that can improve strip blank for powder for powder.The operation of rolling of powder before infiltration can be identical with the existing operation of rolling.The milling equipment that adopts also can be identical.Powder 1 bonds together under the high pressure stress condition, from roll gap, come out to form to have the porous plate made-up belt 4 of certain intensity, strip blank 4 enters 6 li of the aluminium alloy liquid that the fusing of infiltration in the groove 11 be in keeping warm mode under the draw power of roll 5 and roll 14, infiltration groove 11 having heaters 12, be used for heating and insulation, because roll 5 and roll 14 rotate in metal infiltration liquid, roll 5 and roll 14 top layers can form skim metal liquid film, when roll compacting powder strip blank, between two rollers, form higher liquid pressure, make molten metal infiltration enter gap between the powder strip blank powder particle, and the towing plate made-up belt travel forward.13 pairs of strip blanks of roll 7 and roll carry out infiltrating the second time rolling, and if necessary, it is rolling to have many breaker rolls in molten metal the powder strip blank to be infiltrated, and reaches the purpose that the gap in the powder strip blank is all filled by metal infiltration liquid.Roll 8 and roll 9 are drawn metal infiltration liquid with the powder strip blank that infiltration is over, and strip blank is carried out finish rolling, make the strip blank any surface finish.In the strip blank process of cooling, the metal infiltration liquid that infiltrates in the strip blank gap solidifies, thereby obtains ceramic-metal composite 10.Making the band that obtains can cut off by certain length, thereby obtains the metal composite plate; When making the collection finished product of to reel when the band that obtains approaches.
Present embodiment and existing technology difference are the process of powder made-up belt experience infiltration, and the strip material of manufacturing can reach the equal relative density of dense material.Because the fusing point of powder is higher than the temperature of infiltration liquid, the powder made-up belt still keeps solid-state in the infiltration liquid process of experience fusing in infiltration process, do not have the fusing process of recrystallize afterwards, so the size of strip material crystal grain is the size of powder particle.Because the powder that adopts when rolling has comparatively tiny size and particle diameter in certain scope, so the size of the microstructure crystal grain of strip material still keeps tiny, thereby has good performance.
In the present embodiment, the infiltration of roll compacting and strip blank is rolling all carries out under vacuum environment.Powder has adsorption to gas, and when under vacuum environment, powder has discharged the gas of absorption, in rolling powder process, improved the frictional coefficient between powder and the roll, reduced powder and entered the air resistance in roll deformation district, thereby under vacuum environment, can roll out thicker made-up belt.Under vacuum environment, also can improve the speed that metal liquid infiltrates gap between the powder green compact band powder particle, and make molten metal solidify back and powder interface formation good binding, thereby guarantee the performance quality of the matrix material strip that the powder infiltration is rolling.
The present invention can also carry out the hot rolling infiltration to powder, under vacuum environment powder is heated to certain temperature, is rolled then.After powder is heated to certain temperature, the corresponding reduction of the yielding stress of powdered material meeting, thus be easy to viscous deformation, help improving the density of milled sheet made-up belt.Simultaneously because after powder was heated, the easier infiltration of metal infiltration liquid entered the gap between the powder particle, thereby can reduce the infiltration time, enhances productivity.
The present invention can also adopt the powder of nano-scale to be rolled under vacuum environment, then made-up belt is introduced and carried out vacuum infiltration in the molten metal, make metal liquid enter the gap of made-up belt powder particle, then made-up belt is drawn molten metal, the crystal grain of the microstructure of the strip material that obtains after the molten metal that infiltrates in the made-up belt process of cooling solidifies is nano-scale, obtains the nano composite material strip thereby make.
In the present invention, after powder is rolled, can adopts and infiltrate after having the fusing of superplastic metallic substance under the normal temperature, infiltration liquid is zinc, lead or tin.Because these materials or its alloy have formed the matrix of three-dimensional communication, thereby metal alloy or metal-base composites that this kind method makes have superplasticity at normal temperatures.
The roll compacting of present embodiment infiltration strip material production equipment mainly is made up of a pair of roll compacting roll, infiltration groove, a pair of liquid infiltration roll (also can many to), a pair of finished roll, powder hopper and strip finished material collection device etc.On the infiltration groove heating warmer is arranged, can be set in certain temperature heat tracing, the metal infiltration liquid in the groove is maintained liquid state, and can cooled and solidified.The infiltration groove can rotate up and down, after the whole debugging of roll compacting equipment shut out continuous made-up belt well, again the infiltration groove is placed the corresponding position of work.On production line, can finish the back band is adopted quick refrigerative measure in finish rolling.
Embodiment two
As shown in Figure 2, the difference of comparing with embodiment one is that after powder 1 rolled into strip blank by a pair roller 3,15, strip blank entered and carries out sintering in the sintering oven 16, introduced in the infiltration groove 11 by strip blank guide wheel 17 then, infiltrate rolling through a pair of infiltration roll 5,14.
Specifically, iron powder 1 places feed bin 2, and in roll 3,15 rotation processes, under the drive of frictional force between roll and the powder, iron powder enters and is subjected to the rolling of high pressure between two rolls, and boning mutually between the iron powder forms the strip blank with certain porosity.Strip blank is finished sintering in the process of experience sintering oven 16, through guide wheel 17, the powder metallurgy band that sintering is over by infiltration roll 5,14 introduce in the zinc liquid that fusing is in insulation infiltrate, rolling, zinc liquid is filled in the hole in the iron powder band, roll 8,9 is drawn band zinc liquid and carries out finishing rolling, after the band cooling, obtains fine and close zincizing iron-alloy band material 10, can cut off by certain length, obtain the iron-zinc alloy plate; When the alloy strip steel rolled stock of making is thin, can reels and collect finished product 18.Because zinc is corrosion-resistant, and iron powder crystal grain is all coated by the zinc that infiltrates, thereby the iron-zinc alloy that makes also has antirust function.The alloy microscopic structure iron phase of present embodiment preparation exists mutually separately with zinc, and the iron intergranule has the physics contact mutually, and zinc is present in the iron intergranule mutually, and zinc passes through metallurgical binding, two-phase uniform distribution with the interface of iron crystal grain.
Claims (7)
1. the manufacture method of a metal composite strip, it is characterized in that, it comprises the steps and processing condition: roll compacting is become strip blank, then by being in the infiltration roll in the metal infiltration liquid that heat tracing is handled in the infiltration groove, it is rolling that strip blank is incorporated in the metal infiltration liquid infiltration, the molten metal infiltration is entered in the powder strip blank, gap between the powder filler particle, then the powder strip blank is drawn the infiltration liquid postcooling, after molten metal between the infiltration powder particle solidifies, promptly form the metal composite strip.
2. the manufacture method of a kind of metal composite strip according to claim 1 is characterized in that, described strip blank can carry out sintering earlier, and then infiltration.
3. the manufacture method of a kind of metal composite strip according to claim 1 is characterized in that, described roll compacting and strip blank infiltration are all carried out under vacuum environment.
4. the manufacture method of a kind of metal composite strip according to claim 1 is characterized in that, described powder can carry out heat tracing earlier, infiltrates after the hot rolling again.
5. the manufacture method of a kind of metal composite strip according to claim 1 is characterized in that, described powder adopts the fine size powder to be rolled, to infiltrate, and comprises nanometer powder.
6. according to the manufacture method of claim 1 or 4 or 5 described a kind of metal composite strips, it is characterized in that described powder can be one or more mixtures in metal-powder, ceramic powder or the non-metal powder.
7. the manufacture method of a kind of metal composite strip according to claim 1 is characterized in that, described infiltration liquid is molten metal or the alloy liquid that is in keeping warm mode after the METAL HEATING PROCESS fusing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03139894 CN1206059C (en) | 2003-07-18 | 2003-07-18 | Metal compositie plate strap and its manufacturing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 03139894 CN1206059C (en) | 2003-07-18 | 2003-07-18 | Metal compositie plate strap and its manufacturing method |
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| CN1206059C true CN1206059C (en) | 2005-06-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108728778A (en) * | 2018-06-04 | 2018-11-02 | 芜湖征途电子科技有限公司 | A kind of high-fire resistance and high-wearing feature unmanned plane metallic composite |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103894414B (en) * | 2014-03-28 | 2016-05-25 | 兴化市兴东铸钢有限公司 | A kind of co-continuous phase composite board continuous casting and rolling manufacturing process and device |
| US10427336B2 (en) | 2014-11-20 | 2019-10-01 | Baker Hughes, A Ge Company, Llc | Periodic structured composite and articles therefrom |
| US9999920B2 (en) * | 2015-04-02 | 2018-06-19 | Baker Hughes, A Ge Company, Llc | Ultrahigh temperature elastic metal composites |
| US10450828B2 (en) | 2016-10-28 | 2019-10-22 | Baker Hughes, A Ge Company, Llc | High temperature high extrusion resistant packer |
| CN108684127A (en) * | 2018-04-11 | 2018-10-19 | 上海空间推进研究所 | Emitter wetting method and its dedicated unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108728778A (en) * | 2018-06-04 | 2018-11-02 | 芜湖征途电子科技有限公司 | A kind of high-fire resistance and high-wearing feature unmanned plane metallic composite |
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