CN102152555B - Annular preform for manufacturing carbon/carbon composite material brake disc and knitting process method thereof - Google Patents
Annular preform for manufacturing carbon/carbon composite material brake disc and knitting process method thereof Download PDFInfo
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- CN102152555B CN102152555B CN201010529316.1A CN201010529316A CN102152555B CN 102152555 B CN102152555 B CN 102152555B CN 201010529316 A CN201010529316 A CN 201010529316A CN 102152555 B CN102152555 B CN 102152555B
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Abstract
The invention relates to an annular preform for manufacturing a carbon/carbon composite material brake disc and a knitting process method thereof. The current used preform is manufactured through an orthogonal knitting process, wherein long fibers among layers are vertically arranged to form a square; and the square is cut into a ring. The utilization rate of a material is low. The invention aims to provide the annular preform for manufacturing the carbon/carbon composite material brake disc and the knitting process method thereof. The method comprises the following steps of: rotating all element layers at the angle of 10 to 85 DEG layer by layer in sequence; compositely superposing and laying the element layers up and down; vertically needling repeatedly; and then pressing to form the annular preform with the density of 0.5 to 0.58 g/cm<2>, the inner diameter of 200 to 300mm, the outer diameter of 500 to 600mm and the height of 30 to 36mm. The invention has the advantages that: the utilization rate of a raw material and the quality of a processed product are increased, nonorthogonal arrangement of the long fibers is adopted so as to realize the consistency of all mechanical properties, and the service life and the combination property of the carbon brake disc are improved.
Description
One, technical field
The present invention relates on aircraft with manufacturing carbon/carbon compound material brake disc annular precast body and weaving method thereof.
Two, background technology
Current precast body used is orthogonal weaving, and every interlayer long fibre capwise is square after being shaped, then is cut into annular.The precast body stock utilization that this basketry is produced is low
The precast body using in the manufacture of carbon/carbon compound material airplane carbon brake disc is the long fibre pre-oxygen silk screen tire (also claiming carbon carpet veneer) that just accompanying each other, overlapping acupuncture squarely part, after being cut into annular, deposit for carbon, the material except annular is all discarded again, and the utilization rate of material is very low like this.Press the model aircraft such as B757, A320 carbon brake disc precast body used and calculate, the utilization rate of its material is 54%, and having 46% material is that leftover pieces are scrapped.And raw material used is all 12K carbon fibers that the Japanese beautiful or eastern nation in east produces at present, because price is high, thousand yuan of above (containing leftover pieces supply) costs of per kilogram precast body are very high.
Check on the net in State Intellectual Property Office: announced name on April 19th, 2006 and be called " preparation method of braking disk with composite carbon/carbon material " patent, the making that is mainly matrix adopts the method weaving, avoid matrix material in conventional method to use charcoal cloth, acupuncture charcoal felt, needle-punched carbon fiber etc., needed the process of shearing, lamination.The preparation method of braking disk with composite carbon/carbon material, mainly comprise braiding making, matrix moulding, the matrix of matrix vapour deposition or resin pickup charing, high-temperature heat treatment, machining, anti-oxidation processing, finally assemble, it is characterized in that the braiding preparation method of described matrix mainly comprises the following steps:
A, be ready to the charcoal fiber that will use or pre-oxygen silk;
B, fix crochet needle or mix up knitting needle on the adjustable inner and outer ring of diameter according to precalculated needle gage;
C, first along X-axis or radial direction braiding one deck rotates matrix within the scope of 0～90 °;
D, again along Y-axis or hoop direction establishment one deck, within the scope of 0～90 °, rotate matrix;
E, repetition a, b two steps, until reach required thickness;
F, fibre length Z-direction being inweaved at every turn according to matrix thickness mix up;
G, by the fiber mixing up along Z-direction with knitting enter, Z-direction needle gage can, according to requiring any adjustment, can complete braiding.
Check in again on the net in State Intellectual Property Office: announced name on May 10th, 2006 and be called " a kind of non-woven needle-punched fabric and quasi three-dimensional prefab " patent, mainly relate to a kind of by the prefabricated thin layer adhesive-bonded fabric of polyacrylonitrile-based carbon fibre and woven cloth, and the quasi three-dimensional prefab forming through the acupuncture of multi-turn lamination, overcome the defect of existing employing take rectangular OPF woven cloth as main lamination acupuncture prefabricated component.It is made up of short fiber superimposed and acupuncture at random, and said short fiber is polyacrylonitrile-based carbon fibre substance, loose through steam or chemical modification processing, machinery, unclog and readjust, to become surface density be 40-120 gram/meter in acupuncture
2thin layer adhesive-bonded fabric.
Three, technology contents
The object of the invention is to develop a kind of carbon/carbon compound material brake disc annular precast body and weaving method thereof manufactured.Improve the quality of raw-material utilization rate and converted products.Change long stapled orthogonal arrangement simultaneously, reach mechanical performance respectively to uniformity, improve frictional behavior, mechanical characteristic and the combination property of carbon brake disc.
At present, the carbon dish that nonopiate precast body of the present invention produces can double service life.
Technical solution of the present invention: (in order conveniently to understand technology contents, referring to accompanying drawing and accompanying drawing explanation, label is positioned at bracket simultaneously.) carbon/carbon compound material brake disc annular precast body, it is characterized in that: by each elementary layer (8) α be between 10 °～85 ° angles layer by layer successively the anglec of rotation, upper and lower complex superposition lay, vertical acupuncture repeatedly, add that to be pressed into density be 0.5～0.58 gram per centimeter
2, internal diameter is 200～300 millimeters, external diameter is 500～600 millimeters, is highly the annular precast body of 30～36 millimeters.
Technical solution of the present invention also comprises:
Manufacture described carbon/carbon compound material brake disc annular precast body weaving method, it is characterized in that: making step is as follows:
A, at normal temperatures and pressures lower to one deck polypropylene type carbon fiber filament (1) and the pre-oxygen silk screen of one deck polyacrylonitrile-radical tire (2) overlapping tiling is formed to " 1+1 structure ", be fixed into long paper shape " felt body " through vertical acupuncture with needing machine; Its needling density is 10～30 pins/cm
2;
B, this felt body is cutting between two symmetrical four with model, makes surplus minimum through stock layout, be combined into one deck annular by four, internal diameter is 200～300 millimeters, and external diameter is 500～600 millimeters, forms carbon felt part " elementary layer (8) ";
C, by above-mentioned each elementary layer (8) by long stapled direction a selected angle or selected angular range between α=10 °～85 ° of angles, rotate successively layer by layer this α angle or this α angular range, upper and lower complex superposition laying again, in the time being taped against elementary layer (8) for 5-10 layer, start with the upper and lower acupuncture of needing machine, make the long fibre in polypropylene type carbon fiber filament (1) strain up and down location, become one single " felt body " after completing an annular acupuncture; Repave on this basis next elementary layer, then repeat an acupuncture, so circulation is annular complete " the felt body " that is strained and fixed after the acupuncture of unit layer, adds to be pressed into that to reach institute's required thickness be that 30～36 millimeters, density are 0.5～0.58 gram per centimeter
2time, complete the weaving of whole annular precast body (9).
Described manufacture carbon/carbon compound material brake disc annular precast body weaving method, it is characterized in that: by said units layer (8), by long stapled direction selected angle between α=10 °～85 ° of angles, this angle is 15 °, 30 °, 45 °, 60 °, 75 ° special angle.
Described manufacture carbon/carbon compound material brake disc annular precast body weaving method, it is characterized in that: by said units layer (8) by long stapled direction selected angle between α=10 °～85 ° of angles, this angle is 38 ° of-42 ° of scopes, and the best is 40 ° of special angle.
Described manufacture carbon/carbon compound material brake disc annular precast body weaving method, it is characterized in that: one deck polypropylene type carbon fiber filament (1) and the lower overlapping tiling of the pre-oxygen silk screen of one deck polyacrylonitrile-radical tire (2) are formed to " 1+1 structure ", and its both mass ratios are 7: 3.
Described manufacture carbon/carbon compound material brake disc annular precast body weaving method, it is characterized in that: one deck polypropylene type carbon fiber filament (1) and the lower overlapping tiling of the pre-oxygen silk screen of one deck polyacrylonitrile-radical tire (2) are formed to " 1+1 structure ", be fixed into long paper shape " felt body " through vertical acupuncture with needing machine, its needling density is 9～30 pins/cm
2; Said units layer, by long stapled direction selected angle between 10 °～85 ° angles, is rotated to this angle, upper and lower complex superposition laying layer by layer successively, fix with the upper and lower acupuncture of needing machine, its needling density is 9～64 pins/cm
2.
Advantage of the present invention and effect
1, advantage: cut out joining method owing to having adopted, can reach more than 40% therefore save material; Can weave nonopiate precast body, reach the structure of the long stapled angle of the desired difference of design, improve the uniformity of mechanical strength, improve the service life of airplane carbon brake disc; Use domestic carbon fibre long filament and pre-oxygen silk screen tire " 1+1 " mixed structure, can meet airplane carbon brake disc performance requirement, can reduce costs again; Technique is simple, easily realizes the production of large-scale.
2, effect: the carbon/carbon compound material brake disc that adopts the precast body deposition that the present invention produces through applicant, not only technique is simply easy to realize, and it is even to detect every mechanical performance by sample, after detecting, properties data discrete is little, and easily forms the needed coarse tissue of friction material after microcosmic detection carbon deposition; Improved the service life of carbon brake disc, the frictional behaviour of carbon dish is also improved.Through the inertia platform dynamic test of full-page proof, M curve is smooth steadily, and frictional behaviour is good, the seaworthiness that is content with very little condition.Use through installation, braking quality meets airworthiness requirement.
Four, accompanying drawing explanation
Fig. 1 is the planar structure schematic diagram that prior art is made precast body; Fig. 2 is that " 1+1 structure " is fixed into long paper shape felt body structure schematic diagram through vertical acupuncture; Fig. 3 is cutting between two symmetrical four with model by felt body, forms the first stock layout structural representation of carbon felt part " elementary layer "; Fig. 4 is cutting into two between two symmetrical four with model by felt body, and Fig. 5 forms the second stock layout structural representation of carbon felt part " elementary layer "; Fig. 5 is cutting into two between two symmetrical four with model by felt body, and Fig. 4 forms the second stock layout structural representation of carbon felt part " elementary layer "; Fig. 6 is the cross-sectional view that is woven into whole annular precast body; Fig. 7 is that in Fig. 6, A-A cuts open first elementary layer structural representation; Fig. 8 is that in Fig. 6, B-B cuts open second elementary layer structural representation; Fig. 9 is that in Fig. 6, C-C cuts open the 3rd elementary layer structural representation; Figure 10 is the plane perspective structural representation that is woven into three annular element body layings;
Label declaration in above-mentioned figure: 1-polypropylene type carbon fiber filament, is called for short long fibre; The pre-oxygen silk screen of 2-polyacrylonitrile-radical tire, is called for short net tire; 3-1/4 annular element layer; 4-1/4 circle lacks elementary layer, 5-ground floor opposite joint, 6-second layer opposite joint, the 3rd layer of opposite joint of 7-, 8-elementary layer, 9-precast body, D-brake disc external diameter, d-brake disc internal diameter, δ-allowance, α-opposite joint angle, the angle that each elementary layer is laid relatively by its long fibre direction in other words.
Five, the specific embodiment
Adjoint is done further statement, referring to Fig. 1, this is precast body 9 structural representations of original market sale, when purchase, calculate with square 2 × (D+2 δ) areas, cost is high, and precast body as used in model aircraft carbon brake discs such as B757, A320, B747, A318, A319, A320 calculates, in ring, hollow and surrounding angle all will be discarded, although being whole the upper and lower complex superposition of elementary layer, this makes dependable performance, high cost.Be spliced into annular airplane carbon brake disc sample if reduce the discarded of material, under the impregnable condition of each performance indications of airplane carbon brake disc, carbon/carbon compound material brake disc annular precast body weaving method is the target that applicant studies.In figure brake disc D outer diameter be generally can >=600 millimeters, brake disc inner diameter d is generally≤200 millimeters, allowance δ is generally 20～30 millimeters.
Referring to Fig. 2, at normal temperatures and pressures one deck polypropylene type carbon fiber filament 1 and 2 times upper overlapping tilings of the pre-oxygen silk screen of one deck polyacrylonitrile-radical tire are formed to " 1+1 structure ", with the vertical acupuncture of needing machine warp, barb on pin makes long fibre, and Shang Xia 1 pull-up location, as cross do cloth shoes to receive sole the same, upper and lower long fibre 1 is fixed " 1+1 structure " growth scroll " felt body "; General needling density is 0.3---0.6 scope, and material is selected from domestic market, as 12K long fibre 1, has different width, and thickness is generally 1～3 millimeter; Net tire 2 model 12K (note some places pre-polyacrylonitrile-radical oxygen silk screen tire 2 also referred to as thin carbon felt), also have different width, and thickness is generally 0.1～0.5 millimeter.The mass ratio of felt body medium-length fibre 1 and net tire 2 is in 7: 2～4 scopes, and thickness is at 1.1～3.5 millimeters.
Referring to Fig. 3, this is the first scheme that felt type is cut into elementary layer 8, and its width is H
1=d+2 δ, simultaneously referring to Fig. 7, one annular element layer 8 is divided into four, symmetrical between two, two 1/4 circles lack elementary layer 4 and two 1/4 annular element layers 3 and form or be combined into an annular elementary layer 8, surplus minimum after cutting like this, and compared minimizing (having saved in other words) 40% originally.
Referring to Fig. 4 and Fig. 5, this is the first scheme that felt type is cut into elementary layer 8, and Fig. 4 is the same with Fig. 3, and its felt body width is H
1=d+2 δ, for cutting out 1/4 annular element layer 3; Its felt body width of Fig. 5 is H
2=(D-d)/2+2 δ, lacks elementary layer 4 for cutting out 1/4 circle, in like manner four compositions or be combined into an annular elementary layer 8, and surplus minimum after cutting, and compared minimizing (having saved in other words) 40% originally.
Referring to Fig. 6, Fig. 7, Fig. 8 and Fig. 9, precast body 9 is through acupuncture by multiple elementary layers 8, pressurization is fixed into certain density, there is allowance, also nonheat-treated annular disk body, wherein each elementary layer 8 fixedly forms through acupuncture by four, multiple elementary layers 8 tile up and down and have angle to require successively, past is orthogonal (90 °), now use nonopiate arrangement, this is main feature of the present invention, and (referring to Figure 10) elementary layer 8 is by long stapled direction a selected α angle or selected angular range between 10 °～85 ° angles simultaneously, as ° (or 30 °, selected α=15, 45 °, 60 °, 75 °, 85 °, 35 °, 40 °, 50 °, 65 ° of grades all can) angle, or selected 35 °～50 ° angular ranges (15 °～30 ° of other angles certainly, 30 °～45 °, 45 °～55 °, 55 °～70 °, 70 °～80 °, 80 °～85 ° scopes all can), rotate successively layer by layer this α angle or this angular range, upper and lower complex superposition is laid, and in the time being taped against 5-10 layer, starts, with the upper and lower acupuncture of needing machine, to make carbon fiber filament strain up and down location without the long fibre in latitude cloth 1, becomes an annular " polynary layer " after completing an annular acupuncture, re-lay on this basis next polynary layer, repeat again an acupuncture, so circulation will be strained and fixed into an annular complete disk body after each polynary layer acupuncture, then add be pressed into reach 30～36 millimeters of desired thickness, density is 0.5～0.58 gram per centimeter
2time, complete the weaving of whole annular precast body.After Overheating Treatment, be called again " carbon brake disc base substrate ".
It is emphasized that said units layer by long stapled direction selected angle between 38 °～42 ° angles, the best is 40 ° of special angle, this is because the carbon brake disc of institute's organic type all adopts 9 key teeth at present, also just say that 360 ° of borders of carbon brake disc have 9 teeth to distribute, average each bottom angle is 40 °, this angle carbon brake disc key tooth is subject to stress best, and service life is longer.Because key tooth has individual arc length, therefore there is individual angular range to allow, adopt here between 38 °～42 ° angles, angle is selected in 40 ° ± 2 ° for well in other words.
Referring to Figure 10, this is the perspective view that plane is laid, and lays as α=40 ° angle, and three-layer unit layer 8 superpose turning up and down and lays, ground floor opposite joint 5, and 6, the three layers of opposite joint 7 of second layer opposite joint, generally so approximately lay 30～40 layers of elementary layer 8 repeatedly.After acupuncture, pressurization, reach required density, size and complete whole the present invention.
Claims (5)
1. manufacture carbon/carbon compound material brake disc annular precast body weaving method, it is characterized in that: be the anglec of rotation, upper and lower complex superposition laying, vertical acupuncture repeatedly successively layer by layer between 10 °～85 ° angles by each elementary layer (8) at α, add that to be pressed into density be that 0.5～0.58 gram per square centimeter, internal diameter are 200～300 millimeters, external diameter is 500～600 millimeters, is highly the annular precast body of 30～36 millimeters; Described carbon/carbon compound material brake disc annular precast body weaving method making step is as follows:
A, at normal temperatures and pressures lower to one deck polypropylene type carbon fiber filament (1) and the pre-oxygen silk screen of one deck polyacrylonitrile-radical tire (2) overlapping tiling is formed to " 1+1 structure ", be fixed into long paper shape " felt body " through vertical acupuncture with needing machine; Its needling density is 10～30 pins/cm2;
B, this felt body is cutting between two symmetrical four with model, makes surplus minimum through stock layout, be combined into one deck annular by four, internal diameter is 200～300 millimeters, and external diameter is 500～600 millimeters, forms carbon felt part " elementary layer (8) ";
C, by above-mentioned each elementary layer (8) by long stapled direction a selected angle or selected angular range between α=10 °～85 ° of angles, rotate successively layer by layer this α angle or this α angular range, upper and lower complex superposition laying again, in the time being taped against elementary layer (8) for 5-10 layer, start with the upper and lower acupuncture of needing machine, make the long fibre in polypropylene type carbon fiber filament (1) strain up and down location, become one single " felt body " after completing an annular acupuncture; Repave on this basis next elementary layer, repeat again an acupuncture, so circulation is by annular complete " the felt body " that is strained and fixed after the acupuncture of unit layer, add and be pressed into that to reach institute's required thickness be 30～36 millimeters, density while being 0.5～0.58 gram per square centimeter, complete the weaving of whole annular precast body (9).
2. manufacture carbon/carbon compound material brake disc annular precast body weaving method according to claim 1, is characterized in that: be 15 °, 30 °, 45 °, 60 °, 75 ° special angle by said units layer (8) by this angle [alpha] of long stapled direction.
3. manufacture carbon/carbon compound material brake disc annular precast body weaving method according to claim 1, is characterized in that: be 38 ° of-42 ° of scopes by said units layer (8) by this angle [alpha] of long stapled direction.
4. manufacture carbon/carbon compound material brake disc annular precast body weaving method according to claim 3, is characterized in that: be 40 ° of special angle by said units layer (8) by this angle [alpha] of long stapled direction.
5. manufacture carbon/carbon compound material brake disc annular precast body weaving method according to claim 1, it is characterized in that: one deck polypropylene type carbon fiber filament (1) and the lower overlapping tiling of the pre-oxygen silk screen of one deck polyacrylonitrile-radical tire (2) are formed to " 1+1 structure ", and its both mass ratios are 7: 3.
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| CN103172398B (en) * | 2012-04-07 | 2014-05-14 | 西安航空制动科技有限公司 | Treatment method of fiber for carbon brake disc |
| CN104711774A (en) * | 2015-03-31 | 2015-06-17 | 赵晓明 | Full-carbon-fiber weftless cloth containing carbon-fiber filaments in positive and negative 45-degree directions and preparation method thereof |
| CN109228546B (en) * | 2018-08-22 | 2020-07-10 | 青岛高泰新材料有限公司 | Preparation method of high-density multi-angle woven carbon fiber carbon cylinder |
| CN109795180B (en) * | 2019-02-28 | 2021-02-12 | 山东道普安制动材料有限公司 | Weaving method of carbon fiber preform of automobile brake disc |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101418840A (en) * | 2008-11-26 | 2009-04-29 | 南京航空航天大学 | C/C composite material brake disc seam spreading method |
| CN101503843A (en) * | 2009-03-02 | 2009-08-12 | 宜兴市飞舟高新科技材料有限公司 | Pre-oxidized fiber filament / pre-oxidized fiber net tire composite pricking prefabricated body and method for manufacturing the same |
| CN101575766A (en) * | 2009-06-10 | 2009-11-11 | 西安超码科技有限公司 | Method for manufacturing needle-punched carbon fiber pseudo-three-dimensional preform |
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| DE10225954A1 (en) * | 2002-06-11 | 2003-12-24 | Schunk Kohlenstofftechnik Gmbh | Fiber composite component |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101418840A (en) * | 2008-11-26 | 2009-04-29 | 南京航空航天大学 | C/C composite material brake disc seam spreading method |
| CN101503843A (en) * | 2009-03-02 | 2009-08-12 | 宜兴市飞舟高新科技材料有限公司 | Pre-oxidized fiber filament / pre-oxidized fiber net tire composite pricking prefabricated body and method for manufacturing the same |
| CN101575766A (en) * | 2009-06-10 | 2009-11-11 | 西安超码科技有限公司 | Method for manufacturing needle-punched carbon fiber pseudo-three-dimensional preform |
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