CN105642838A - Boss cap fin machining technology - Google Patents
Boss cap fin machining technology Download PDFInfo
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- CN105642838A CN105642838A CN201610208765.3A CN201610208765A CN105642838A CN 105642838 A CN105642838 A CN 105642838A CN 201610208765 A CN201610208765 A CN 201610208765A CN 105642838 A CN105642838 A CN 105642838A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/082—Sprues, pouring cups
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a boss cap fin machining technology and aims to solve the problem that the weight distribution is non-uniform after forming of a boss cap fin. The technical scheme of the boss cap fin machining technology is characterized in that standard of quality and size of a casting is improved through continuous calibration, measurement and positioning in a machining process; under the action of a flow guide groove, a liquid-state copper alloy can be cast under the guidance of the flow guide groove in a pouring process, and the uniformity of the weight distribution of the casting is enhanced. With the adoption of the boss cap fin machining technology, the casting with uniform weight distribution can be produced.
Description
Technical field
The present invention relates to hub cap fin production field, more particularly, it relates to a kind of hub cap fin processing technology.
Background technology
Hub cap fin is called again screw hub cap fin, a kind of propeller energy-saving device of on common propeller boss cap surface, several suitable blades being installed and form, absorb on the one hand the rotating energy of screw current, produce positive torque, eliminate again on the other hand or weaken the hub whirlpool of screw, play rectified action, thereby reduce hub vortex drag, improve the efficiency of screw, because it is simple in structure, can be installed on easily new ship and existing obsolete vessel, be a kind of effectively, practical, energy saver easily, and be conducive to reduce exciting force and the noise of screw. If hub cap fin distribution of weight is inhomogeneous, can cause hub cap fin in rotary course, to produce unbalance dynamic, because hub cap fin is arranged on screw, easily cause screw rotation uneven, and the hub whirlpool that can not eliminate or weaken screw, existing hub cap fin manufacturing process is difficult to control Mass Distribution, and precision is lower, thereby affects Mass Distribution harmony and structural strength. Therefore need to propose a kind of new scheme and solve this problem.
Summary of the invention
The deficiency existing for prior art, the object of the present invention is to provide a kind of uniform hub cap fin of hub cap fin distribution of weight processing technology of production, the location by repeatedly and and the drainage trough that adds strengthen the Mass Distribution uniformity of hub cap fin.
Above-mentioned technical purpose of the present invention is achieved by the following technical programs: a kind of hub cap fin processing technology, comprises the steps:
One, the preparation before moulding: choose after under casing in placely, insert axle, be corrected to level in 360 ° of orientation every 90 °;
Two, striking under casing: make the center of axle under casing, insert the sand mold reality of pounding, plane is blown firmly with carbon dioxide, mark bisector according to blade quantity on circular arc line, marking;
Three, make sand mo(u)ld hub: taking the axle center of right overhead as basis, with reference to the size dimension of hub, measure with model, the bonding fusing point metallic channel for drainage lower than copper alloy on hub core iron, metallic channel energy and liquid copper alloy merge, and then place hub core iron, brush slime water, the back-up sand reality of pounding, by sufficient axle, scrapes sand mo(u)ld by cross-arm; Scrape rear inspection center line or hypsokinesis wire tag and concentric reducer diameter, then brushed clear water, then spread one deck loam, again scraped smooth, a clean and tidy hub sand mo(u)ld, stand-by with carbon dioxide air blowing;
Four, striking pitch surface: adjust hub sand mo(u)ld height, leaf model center line is aimed to bisector, draw leaf profile, and can offer runner gate and ingate; Install after outer set square, by in place along circular arc line interior set square, put down mounted pitch scraper plate, go out the radiation baseline position of secondary scraper plate with lining bar school, and be fixed, scraper plate is made to outer set square heart point, in adjusting, set square makes it to contact with the secondary scraper plate of reserving position again, and now, pitch plate present position is the center line of paddle sand mold, on interior set square, carve center line markings, fix interior set square;
Five, make phyllodium: section template is nailed on corresponding line, and model is vertical with pitch surface, the center line of model and pitch surface center line are aimed at, and add molding sand between section template, fill up after molding sand, accomplish the phyllodium of a fairing with scraper by sectional dimension;
Six, make top box: cover plate is put on mo(u)ld bottom half, on mo(u)ld bottom half, sprinkles one deck tap sand, locate layer overlay paper at die joint and angle seam etc., fill out suitable water-glass sand, the reality of successively pounding, strikes off smoothing by surrounding after consolidation is good, inserts pore, blow carbon dioxide, stamp 8-10 venthole in nowel Sha Dun side, and on the cover board insert some pores every 60-80mm place, take out hub sand mo(u)ld, by suitable smoothing in hub, mo(u)ld top half sled is unclamped to case with club;
Seven, build case: repair and scrape by section template vestige at mold cavity surface with scraper, ream 10mm left and right at leaf margin angle seam place, leaf root part scrapes circular arc according to figure paper size;
Eight, at the bottom of repairing case: remove phyllodium and repair type, tamp former core axle hole;
Nine, loam core makes: at base plate upper berth one deck water-glass sand, put arbor, on teeth directional, back-up sand consolidation, scrapes semicircle core with scraper plate, and smoothing is suitable, blow carbon dioxide, take out half core and be placed in soft place, output in the plane air drain, get after the same method another half fuse, two planes are coated to sodium silicate binder, by two pasting of core, the arbor at two fastens with iron wire, and hang-up is repaiied suitable, and draws from upper end, loam core, brush alcohol-base paint, some fire drying;
Ten, the making of down gate, runner gate, cup: make down gate and runner gate with wooden model or steel pipe full pattern, runner gate planted agent plugs skim strainer sheet, and cup is pressed process and made, suitably enlarging below each joint, then by the annex paint of accomplishing fluently, enter bake oven dry;
11, mould assembling: by the sand mold pull-out stove having dried, before mould assembling, the sand-lime of mo(u)ld top half and mo(u)ld bottom half is blown off, aim at mould assembling line when mould assembling, and then enter kiln drying;
12, running gate system is installed: when dress running gate system, check the patency of cast passage, the position of sand grid, cup diameter of outflow tube meets sprue diameter, and core and runner gate are guaranteed to align.
By adopting technique scheme, first insert axle choose under casing before moulding after, carry out the correction of 90 ° by the orientation at 360 °, ensure the perpendicularity of axle, striking under casing, inserts sand mold and pounds after reality, by carbon dioxide, plane is blown firmly, keeps the hardness of plane, facilitates subsequent operation, and then on circular arc line, the quantity according to blade marks bisector, ensures that by the mode of line the quality of every can equate, make sand mo(u)ld hub, the bonding fusing point metallic channel lower than copper alloy on hub loam core, metallic channel plays the effect of drainage in the time of cast, make in casting process, liquid copper alloy can evenly flow under the effect of the drainage of metallic channel, effectively strengthen the distribution of weight uniformity of foundry goods, in order to make metallic channel not affect the quality of foundry goods, metallic channel can be fused in liquid copper alloy after the effect of playing drainage, then place hub core iron, the back-up sand reality of pounding, cross-arm is leaned on to sufficient axle, scrape sand mo(u)ld, rear inspection center line or hypsokinesis wire tag and concentric reducer diameter are scraped, in order to strengthen casting the uniformity of medium casting weight, striking pitch surface, wherein, aims at bisector by leaf model center line, goes out the radiation baseline position of secondary scraper plate, and be fixed with lining bar school, proofreaies and correct by these, can further strengthen the uniformity of the weight of foundry goods, make phyllodium, the center line of template surface and the center line of pitch surface are aimed at, and make the center of gravity of hub cap fin concentrate on centre, prevent centre-of gravity shift, make top box, by adopt the real mode of successively pounding in adding water-glass sand, make top box consolidation, build case, scrape circular arc at leaf root part according to figure paper size, circular arc is ensured the same, thereby make the distribution of weight of foundry goods even, loam core makes, and in manufacturing process, by suitable core smoothing, can improve the smoothness of cast(ing) surface, the making of down gate, runner gate, cup, plug skim strainer sheet and can improve the quality of foundry goods at runner gate, avoid impurity to infiltrate in foundry goods, cup is made according to process, can well control flow velocity and the flow of the liquid metal in casting process, improve casting quality, mould assembling, aims at mould assembling line when mould assembling, the Mass Distribution that can strengthen foundry goods is even, running gate system is installed, check the patency of cast passage, while avoiding pouring into a mould, stop up, whether the position of sand grid meets the requirements, cup diameter of outflow tube should meet sprue diameter, checks whether core and runner gate align, supporting after, before cast, with blowtorch at baking temporary mould and cup, keep watering front mould temperature half an hour.
The present invention is further set to: check the accuracy of all pitch surfaces, check hub center line or hypsokinesis line and blade face radiation anastomose property, revise die joint, angle seam and runner gate.
By adopting technique scheme, in checking pitch surface, need to check emphatically whether hub center line or hypsokinesis line coincide with blade face radiation, and such inspection can be strengthened the distribution of weight uniformity of foundry goods.
The present invention is further set to: according to technique pitch surface coordinate dimension, measure each point coordinates with screw pitch gauge, and with 2-3 cun of nail location, fix pitch surface.
By adopting technique scheme, measure each point coordinates by screw pitch gauge, and with nail location, can strengthen the standard of the size of foundry goods, thereby the quality of foundry goods can be evenly distributed.
The present invention is further set to: the blade tip shape blade tip core box of making phyllodium in described step 5 is made, and sand mold is put into core box consolidation, makes blade tip shape, when taking-up, divides several fritters from leaf center, is put on pitch surface, adds sand finishing.
By adopting technique scheme, in making phyllodium, can adopt another kind of method, make phyllodium by blade tip core box, can make equally phyllodium.
The present invention is further set to: the described sand mold having dried is put on smooth place, by clean floating dust cleaning, checks whether sand mold ftractures, scrape off floating sand at cracking place, form triangular groove, with water-glass sand or coating plaster repairing, serious cracking place need to repair again, inserts wire nail and reinforces.
By adopting technique scheme, check whether the sand mold having dried ftractures, and repair in time, can improve the quality of foundry goods.
The present invention is further set to: while repairing angle seam, blow off the floating sand in type, in every blade profile chamber, lagging edge blocks cotton yarn, and while preventing from repairing, sand grains rolls in blade die cavity, filling in angle with water-glass sand stitches, angle seam is filled dry sand in midfield, sets out pore at sand mold head, keeps mould temperature simultaneously.
By adopting technique scheme, in the time repairing angle seam, by water-glass sand being tucked in angle seam, and fill dry sand in angle seam midfield, can avoid preferably angle to stitch the impact on foundry goods.
The present invention is further set to: the material of described metallic channel can adopt the materials such as zinc, aluminium, tin.
By adopting technique scheme, the effect of the water conservancy diversion playing due to metallic channel, can not affect again the quality of foundry goods simultaneously, so the material that metallic channel adopts is the materials such as zinc, aluminium, tin, these material melting point are all low than copper alloy, metallic channel can be melted and is then dissolved in liquid copper alloy when liquid copper alloy runs into metallic channel, also can not become the impurity of foundry goods, can also play the effect of drainage simultaneously.
In sum, the present invention has following beneficial effect:
One, by constantly proofreading and correct and measurement and positioning in manufacturing process, has improved the standard of quality and the size of foundry goods;
Its two, by the effect of drainage trough, in casting process, can make liquid copper alloy according to the guiding of drainage trough, carry out foundry goods, strengthened the distribution of weight uniformity of foundry goods.
Detailed description of the invention
Below in conjunction with embodiment, describe the present invention.
Embodiment mono-: the processing technology step of hub cap fin is as follows:
One, the preparation before moulding: workman choose after under casing in place, insert axle, be corrected to level in 360 ° of orientation every 90 °;
Two, striking under casing: after under casing is in place, make the center of axle under casing, insert the sand mold reality of pounding, plane is blown firmly with carbon dioxide, on circular arc line, mark bisector according to blade quantity, embed disconnected saw blade marking, build with brick, in order to avoid break displacement, ensure that by the mode of line the weight of every foundry goods can equate;
Three, make sand mo(u)ld hub: taking the axle center of right overhead as basis, with reference to the size dimension of hub, with model measurement, must not be less than normal, the bonding fusing point metallic channel for drainage lower than copper alloy on hub core iron, metallic channel energy and liquid copper alloy merge, then place hub core iron, brush slime water, the back-up sand reality of pounding, cross-arm, by sufficient axle, is scraped to sand mo(u)ld, rear inspection center line or hypsokinesis wire tag and concentric reducer diameter are scraped, then brush clear water, spread again one deck loam, again scrape one smooth, clean and tidy hub sand mo(u)ld, stand-by with carbon dioxide air blowing, in the middle of the large end of sand mo(u)ld, symmetry is dug out arbor, penetrate iron wire so that lifting, metallic channel plays the effect of drainage in cast, in casting process, liquid copper alloy can evenly flow under the effect of the drainage of metallic channel, effectively strengthen the distribution of weight uniformity of foundry goods, simultaneously in order to make metallic channel not affect the quality of foundry goods, metallic channel can be fused in liquid copper alloy after the effect of playing drainage,
Four, striking pitch surface: adjust hub sand mo(u)ld height, leaf model center line is aimed to bisector, draw leaf profile, consider again suitable back-up sand amount, and can offer runner gate and ingate, install after outer set square, by in place along circular arc line interior set square, put down mounted pitch scraper plate, go out the radiation baseline position of secondary scraper plate with lining bar school, and be fixed, scraper plate is made to outer set square heart point, in adjusting, set square makes it to contact with the secondary scraper plate of reserving position again, now, pitch plate present position is the center line of paddle sand mold very, on interior set square, carve center line markings, fix interior set square, then check that whether all pitch surfaces are accurate, check whether hub center line or hypsokinesis line coincide with blade face radiation simultaneously, revise die joint, angle seam and runner gate, revise pitch surface, according to technique pitch surface coordinate dimension, measure each point coordinates with screw pitch gauge, and with 2-3 cun nail location, fix pitch surface, by these corrections and measuring point and location, strengthen the uniformity of the weight of foundry goods,
Five, make phyllodium: section template is nailed on corresponding line, model is vertical with pitch surface, to reduce thickness deviation, the center line of model and pitch surface center line are aimed at, in order to avoid affect cross-sectional length, as wider in cross section, when length is difficult vertical with pitch surface, should estimate in advance the thickness error causing because of cross section out of plumb, between section template, add molding sand, when consolidation, be preferably in model both sides consolidation simultaneously, model deflection is little like this, fill up after molding sand, accomplish the phyllodium of a fairing by sectional dimension with scraper, for make unpack after be easy to repair type, on phyllodium, sprinkle " red soil sand ", evil spirit light becomes the phyllodium of a fairing,
Six, make top box: cover plate is put on mo(u)ld bottom half, check the height situation of gear shaping, be that datum level round steel welds available cover plate according to die bed, on mo(u)ld bottom half, sprinkle one deck tap sand, locate layer overlay paper at die joint and angle seam etc., be convenient to unpack, fill out suitable water-glass sand, the reality of successively pounding, accomplish that consolidation is even as far as possible, particularly angle seam place to pound real good, after consolidation is good, surrounding is struck off to smoothing, insert pore, blow carbon dioxide, stamp 8-10 venthole in nowel Sha Dun side, and on the cover board insert some pores every 60-80mm place, take out hub sand mo(u)ld, by suitable smoothing in hub, and check hub die cavity concentric reducer size, with long iron staff, mo(u)ld top half being prized to pine can unpack,
Seven, build case: repair and scrape by section template vestige at mold cavity surface with scraper, until exist without vestige, as need thickening can be first at surperficial Kai Ji road shallow slot, then suitable by groove depth smoothing, as considered there is problem in section template while laying crooked and the detection of correction sand mold, also can in the time building case, suitably be repaired, ream 10mm left and right at leaf margin angle seam place, leaf root part scrapes circular arc according to figure paper size; Mold cavity surface wants fairing tight, and leaf margin is excessively wanted evenly, fairing, and angle seam place should ream 10mm left and right, makes it to produce crack, but can not be excessive in order to avoid dry not dry after mould assembling; On die joint, if any raised, struck off, kept fairing, should not repair and cut in order to avoid affect vane thickness;
Eight, at the bottom of repairing case: fix and remove phyllodium after fillet and repair type, tamp former core axle hole, prevent that liquid copper alloy from revealing;
Nine, loam core makes: at base plate upper berth one deck water-glass sand, put arbor, on teeth directional, back-up sand consolidation, scrape semicircle core with scraper plate, smoothing is suitable, blow carbon dioxide, take out half core and be placed in soft place, output in the plane air drain, get after the same method another half fuse, two planes are coated to sodium silicate binder, by two pasting of core, the arbor at two fastens with iron wire, hang-up is repaiied suitable, keep core unimpeded, and draw from upper end, loam core, brush alcohol-base paint, point fire drying, check each portion size, evenly be coated with again last layer coating, entering baker dries, smoothing is repeatedly suitable, can heighten the smoothness of cast(ing) surface,
Ten, the making of down gate, runner gate, cup: make down gate and runner gate with wooden model or steel pipe full pattern, runner gate planted agent plugs skim strainer sheet, cup will keep certain depth, running gate system should be noted open, and process is made in accordance with regulations, note suitably enlarging below each joint, so that docking accurately, then by the annex paint of accomplishing fluently, enter bake oven dry, can grasp flow velocity and the flow of the liquid metal in casting process by controlling the size of cup, improve casting quality;
11, mould assembling: by the sand mold pull-out stove having dried, be put on smooth good place, will float ash cleaning totally, check whether sand mold ftractures, and cracking place should scrape off floating sand, form triangular groove, repair with water-glass sand or coating plaster, serious cracking place will repair again, inserts wire nail and reinforces, before mould assembling, the sand-lime of mo(u)ld top half and mo(u)ld bottom half is blown off, when mould assembling, aim at mould assembling line, and then enter kiln drying, whether oven dry is observed sand mold with torch after coming out of the stove and is out of shape, crackle and damage, if any damaging the finishing of should unpacking again; In the time repairing angle seam, blow off the floating sand in type, in every blade profile chamber, lagging edge blocks cotton yarn, while preventing from repairing, sand grains rolls in blade die cavity, fills in angle seam with water-glass sand, and angle seam can be filled dry sand in midfield, be convenient to sand mold exhaust, head is stamped several holes of going out, and keeps mould temperature simultaneously; Dress will be noted leveling up with stopper when plate, whether reexamines in type drop or cracking after bolted;
12, running gate system is installed: the patency that checks each cast passage when dress running gate system, whether sand grid meets the requirements, cup diameter of outflow tube meets sprue diameter, check whether core and runner gate align, central axis hole core is located by caliper measurements, the round steel thickness of solid welding core position is wanted suitably, can not be excessively thick, in order to avoid core is pressed to obtain tension, when cast, after expanded by heating, make core cracking, cross detailed rules and regulations and may cannot keep under control core, cause core floating, after supporting, should be before cast half an hour toast again temporary mould and cup with blowtorch, keep watering front mould temperature.
Embodiment bis-: be with the difference of embodiment mono-: the making of phyllodium can adopt blade tip core box to do, first sand mold is put into core box consolidation, make blade tip shape, when taking-up, divide several fritters from leaf centerline, be put on pitch surface, the unified sand that adds is repaired, and also can directly follow closely on pitch surface with wooden model blade tip.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is also not only confined to above-described embodiment, and all technical schemes belonging under thinking of the present invention all belong to protection scope of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. a hub cap fin processing technology, is characterized in that: comprise the steps:
One, the preparation before moulding: choose after under casing in placely, insert axle, be corrected to level in 360 ° of orientation every 90 °;
Two, striking under casing: make the center of axle under casing, insert the sand mold reality of pounding, plane is blown firmly with carbon dioxide, mark bisector according to blade quantity on circular arc line, marking;
Three, make sand mo(u)ld hub: taking the axle center of right overhead as basis, with reference to the size dimension of hub, measure with model, the bonding fusing point metallic channel for drainage lower than copper alloy on hub core iron, metallic channel energy and liquid copper alloy merge, and then place hub core iron, brush slime water, the back-up sand reality of pounding, by sufficient axle, scrapes sand mo(u)ld by cross-arm; Scrape rear inspection center line or hypsokinesis wire tag and concentric reducer diameter, then brushed clear water, then spread one deck loam, again scraped smooth, a clean and tidy hub sand mo(u)ld, stand-by with carbon dioxide air blowing;
Four, striking pitch surface: adjust hub sand mo(u)ld height, leaf model center line is aimed to bisector, draw leaf profile, and can offer runner gate and ingate; Install after outer set square, by in place along circular arc line interior set square, put down mounted pitch scraper plate, go out the radiation baseline position of secondary scraper plate with lining bar school, and be fixed, scraper plate is made to outer set square heart point, in adjusting, set square makes it to contact with the secondary scraper plate of reserving position again, and now, pitch plate present position is the center line of paddle sand mold, on interior set square, carve center line markings, fix interior set square;
Five, make phyllodium: section template is nailed on corresponding line, and model is vertical with pitch surface, the center line of model and pitch surface center line are aimed at, and add molding sand between section template, fill up after molding sand, accomplish the phyllodium of a fairing with scraper by sectional dimension;
Six, make top box: cover plate is put on mo(u)ld bottom half, on mo(u)ld bottom half, sprinkles one deck tap sand, locate layer overlay paper at die joint and angle seam etc., fill out suitable water-glass sand, the reality of successively pounding, strikes off smoothing by surrounding after consolidation is good, inserts pore, blow carbon dioxide, stamp 8-10 venthole in nowel Sha Dun side, and on the cover board insert some pores every 60-80mm place, take out hub sand mo(u)ld, by suitable smoothing in hub, mo(u)ld top half sled is unclamped to case with club;
Seven, build case: repair and scrape by section template vestige at mold cavity surface with scraper, ream 10mm left and right at leaf margin angle seam place, leaf root part scrapes circular arc according to figure paper size;
Eight, at the bottom of repairing case: remove phyllodium and repair type, tamp former core axle hole;
Nine, loam core makes: at base plate upper berth one deck water-glass sand, put arbor, on teeth directional, back-up sand consolidation, scrapes semicircle core with scraper plate, and smoothing is suitable, blow carbon dioxide, take out half core and be placed in soft place, output in the plane air drain, get after the same method another half fuse, two planes are coated to sodium silicate binder, by two pasting of core, the arbor at two fastens with iron wire, and hang-up is repaiied suitable, and draws from upper end, loam core, brush alcohol-base paint, some fire drying;
Ten, the making of down gate, runner gate, cup: make down gate and runner gate with wooden model or steel pipe full pattern, runner gate planted agent plugs skim strainer sheet, and cup is pressed process and made, suitably enlarging below each joint, then by the annex paint of accomplishing fluently, enter bake oven dry;
11, mould assembling: by the sand mold pull-out stove having dried, before mould assembling, the sand-lime of mo(u)ld top half and mo(u)ld bottom half is blown off, aim at mould assembling line when mould assembling, and then enter kiln drying;
12, running gate system is installed: when dress running gate system, check the patency of cast passage, the position of sand grid, cup diameter of outflow tube meets sprue diameter, and core and runner gate are guaranteed to align.
2. hub cap fin processing technology according to claim 1, is characterized in that: check the accuracy of all pitch surfaces, check hub center line or hypsokinesis line and blade face radiation anastomose property, revise die joint, angle seam and runner gate.
3. hub cap fin processing technology according to claim 2, is characterized in that: according to technique pitch surface coordinate dimension, measure each point coordinates with screw pitch gauge, and with 2-3 cun of nail location, fix pitch surface.
4. hub cap fin processing technology according to claim 1, is characterized in that: the blade tip shape blade tip core box of making phyllodium in described step 5 is made, and sand mold is put into core box consolidation, make blade tip shape, when taking-up, divide several fritters from leaf center, be put on pitch surface, add sand finishing.
5. hub cap fin processing technology according to claim 1, it is characterized in that: the described sand mold having dried is put on smooth place, by clean floating dust cleaning, check whether sand mold ftractures, scrape off floating sand at cracking place, form triangular groove, with water-glass sand or coating plaster repairing, serious cracking place need to repair again, inserts wire nail and reinforces.
6. hub cap fin processing technology according to claim 1, it is characterized in that: while repairing angle seam, blow off the floating sand in type, in every blade profile chamber, lagging edge blocks cotton yarn, while preventing from repairing, sand grains rolls in blade die cavity, filling in angle with water-glass sand stitches, angle seam is filled dry sand in midfield, sets out pore at sand mold head, keeps mould temperature simultaneously.
7. hub cap fin processing technology according to claim 1, is characterized in that: the material of described metallic channel can adopt the materials such as zinc, aluminium, tin.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110337336A (en) * | 2017-04-06 | 2019-10-15 | 宝马股份公司 | Type core group |
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| CN1207969A (en) * | 1997-09-02 | 1999-02-17 | 林宇清 | Propeller producing process |
| CN101716655A (en) * | 2009-12-16 | 2010-06-02 | 宁夏共享铸钢有限公司 | Casting method of large water turbine blade |
| CN202670081U (en) * | 2012-05-09 | 2013-01-16 | 广州市番禺远航螺旋桨制造有限公司 | Energy-saving propeller cap with fins |
| CN102717030A (en) * | 2012-06-14 | 2012-10-10 | 西安西工大超晶科技发展有限责任公司 | Precision casting method for thick-wall base aluminium alloy casting |
| CN103878321A (en) * | 2014-03-27 | 2014-06-25 | 舟山市定海区龙叶螺旋桨制造有限公司 | Propeller molding technology |
| CN105195684A (en) * | 2014-06-17 | 2015-12-30 | 中国北车集团大同电力机车有限责任公司 | Method for casting hollow shaft sleeve |
| CN104668475A (en) * | 2015-03-12 | 2015-06-03 | 哈尔滨电机厂有限责任公司 | Technical method for modeling integrally-cast bucket runner of water turbine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110337336A (en) * | 2017-04-06 | 2019-10-15 | 宝马股份公司 | Type core group |
| CN110337336B (en) * | 2017-04-06 | 2022-02-11 | 宝马股份公司 | Core group |
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