SI24307A - Boring of sand cores from castings - Google Patents
Boring of sand cores from castings Download PDFInfo
- Publication number
- SI24307A SI24307A SI201300077A SI201300077A SI24307A SI 24307 A SI24307 A SI 24307A SI 201300077 A SI201300077 A SI 201300077A SI 201300077 A SI201300077 A SI 201300077A SI 24307 A SI24307 A SI 24307A
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- SI
- Slovenia
- Prior art keywords
- sand
- castings
- casting
- core
- air
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D29/00—Removing castings from moulds, not restricted to casting processes covered by a single main group; Removing cores; Handling ingots
- B22D29/001—Removing cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D29/00—Removing castings from moulds, not restricted to casting processes covered by a single main group; Removing cores; Handling ingots
- B22D29/001—Removing cores
- B22D29/006—Removing cores by abrasive, water or air blasting
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Pri vrtanju peščenih jeder uporabljamo namensko votlo orodje, ki z vrtenjem in pomikom v notranjost ulitka drobi sredino peščenega jedra. Na rob drobilne ploščice priteka zrak pod tlakom direktno na mesto drobljenja peska. Zrak odnaša pesek v smeri izven ulitka, med potjo ven mešanica zraka in peska odstrani preostanek jedra in očisti površino.When drilling sand cores, a dedicated hollow tool is used, which rotates and moves into the center of the sand core. At the edge of the crushing plate, air flows directly into the crushing site. The air takes off the sand in the direction outside the cast, while the air and sand mixture removes the remainder of the core and cleans the surface during the journey.
Description
Dejan LORBERDejan LORBER
Lovrenc na Dravskem polju 122B 2324 Lovrenc na Dravskem poljuLovrenc na Dravsko polje 122B 2324 Lovrenc na Dravsko polje
VRTANJE PEŠČENIH JEDER IZ ULITKOVROTATION OF BAKED CASTES FROM CASTINGS
Predmet izuma je tehnološki postopek čiščenja peščenih jeder iz različnih ulitkov, bodisi barvnih kovin in njihovih zlitin, bodisi železnih zlitin.The object of the invention is a technological process of cleaning sand cores from different castings, whether non-ferrous metals and their alloys, or ferrous alloys.
Izum omogoča čiščenje jeder iz vročih ulitkov, in sicer takoj po litju oz. zaključenem procesu strjevanja. Tega z dosedanjo tehnologijo ni mogoče narediti. Tehnologija omogoča čiščenje vseh vrst peščenih jeder: »Cold box«, »Hot box«, »Croning« in jeder z anorganskimi vezivi. Največje prednosti so:The invention enables the cleaning of cores from hot castings, immediately after casting or casting. completed the curing process. This cannot be done with current technology. The technology enables cleaning of all types of sand cores: Cold box, Hot box, Croning and inorganic binder cores. The biggest advantages are:
- Enostavna izvedba naprave za čiščenje jeder.- Easy to use kernel cleaning device.
- Cenejša naprava za čiščenje jeder.- Cheaper core cleaning device.
- Dodatna delovna sila ni potrebna. Operacija se izvede takoj za litjem in na istem delovnem mestu kot litje.- No additional labor required. The operation is performed immediately after casting and at the same job as casting.
- Peskanje ulitkov ni potrebno. Na ulitku ni ostankov jedra.- No sand blasting required. There is no core residue on the casting.
- Manjša količina ulitkov na vmesnem skladišču med fazo litja in čiščenja jeder.- Less castings in the intermediate storage during the casting and core cleaning phase.
- Izboljšan nadzor in kontrola kakovosti procesa zaradi hitrega rezultata in s tem tudi manjši izmet. Ulitki se lahko serijsko kontrolirajo in finalizirajo že 1Λ ure po litju.- Improved process quality control and control due to rapid result and thus reduced ejection. Castings can be serially controlled and finalize already Λ 1 hour after casting.
- Postopek je ekološko prijaznejši. Čiščenje se odvija takoj po litju in razgradnja veziva poteka relativno kratek čas. Pesek se zaradi izpihovanja z zrakom hitro ohladi.- The process is more environmentally friendly. Cleaning takes place immediately after casting and the breakdown of the binder takes a relatively short time. The sand cools rapidly due to air blowing.
- Pesek se pri čiščenju popolnoma razgradi. Dodatno drobljenje oz.- The sand completely degrades during cleaning. Additional crushing or grinding.
priprava za nadaljnjo uporabo ni potrebna.preparation for further use is not required.
- Notranja površina ulitka je čista in brez vključkov peska na površini.- The inner surface of the casting is clean and free of sand on the surface.
Dodatno peskanje zaradi ostankov jedra ni potrebno.No additional sandblasting is required due to core residue.
Dosedanje tehnološke rešitve čiščenja jeder so zasnovane na dveh principih:Previous technological solutions for core cleaning are based on two principles:
1. Vibriranje: Ulitek se vpne v namensko vpenjalno pripravo in se po njem najprej tolče s pnevmatskimi kladivi, da jedro razpoka. Sledi vibriranje ulitkov. Rešitev je patentirana z več patenti: FR2850890, US2006272792, FR2901161, EP0326138, EP0325928,1. Vibration: The cast is clamped into a dedicated clamping device and is first hit with pneumatic hammers to crack the core. The vibration of the castings follows. The solution is patented with several patents: FR2850890, US2006272792, FR2901161, EP0326138, EP0325928,
W02004067209, VV02007132101, FR2711931, US4718473,W02004067209, VV02007132101, FR2711931, US4718473,
FR2730436, EP0111461, FR2699840, US4722386, DE2947795, DE3219390, EP0304683, VVO9721523, FR2655895, VVO9213663, US5213150, JP63235063, GB2067938, DE3319312 in je dokaj problematična zaradi:FR2730436, EP0111461, FR2699840, US4722386, DE2947795, DE3219390, EP0304683, VVO9721523, FR2655895, VVO9213663, US5213150, JP63235063, GB2067938, DE3319312 and is quite problematic because of:
- Ulitki se morajo pred čiščenjem popolnoma ohladiti. To pomeni dodatno vmesno skladiščenje in zamik nadaljnjih faz proizvodnje najmanj za 8 do 16 ur.- Castings must be completely cooled before cleaning. This means additional intermediate storage and a delay of further production phases of at least 8 to 16 hours.
- Nevarnost nastanka razpok.- Risk of cracking.
- Nevarnost poškodb na kosu zaradi vpetja.- Risk of injury to the piece due to clamping.
- Visok strošek vzdrževanja naprave, saj je ta zaradi velik obremenitev samouničujoča.- High maintenance cost of the device as it is self-destructive due to high load.
- Na površini ulitka ostanejo drobci peska, ki jih je potrebno odstranit s peskanjem.- Remains of sand remain on the surface of the casting and must be sandblasted.
2. Termična razgradnja: Ulitki se v peči ogrevajo na 400°C od 4 do 6 ur, tako da se vezivo (fenolne smole) termično razgradi. Po termični razgradnji je potrebno še izprazniti pesek iz ulitkov. Rešitev je patentirana z več patenti: US3989227, VV09730805 in je dokaj problematična zaradi:2. Thermal decomposition: The castings are heated in the oven at 400 ° C for 4 to 6 hours so that the binder (phenolic resins) is thermally decomposed. After thermal decomposition, sand from the castings must be emptied. The solution is patented with several patents: US3989227, VV09730805 and is quite problematic because of:
- Ulitki se pred termično razgradnjo zbirajo v šarže - palete zaradi optimalnih stroškov operacije. To pogojuje dodatno vmesno skladišče in zamik nadaljnjih faz proizvodnje najmanj za 16 do 24 ur.- Castings are collected prior to thermal decomposition into batches - pallets for optimal operation costs. This results in additional intermediate storage and a delay of further production phases of at least 16 to 24 hours.
- Na površini ulitka ostanejo drobci peska, ki jih je potrebno odstranit s peskanjem.- Remains of sand remain on the surface of the casting and must be sandblasted.
- Energetsko in finančno potraten postopek.- An economically and economically wasteful process.
Opis postopka vrtanja peščenih jeder iz ulitkov:Description of the process of drilling sand castings from castings:
Pri vrtanju peščenih jeder uporabljamo namensko votlo orodje (2), ki z vrtenjem in pomikom v notranjost ulitka (1) drobi sredino peščenega jedra (3); skozi luknje na orodju (4) priteka zrak pod tlakom in izteka skozi luknje v smeri na keramično ploščico (5) direktno na mesto drobljenja peska; vpihan zrak odnaša pesek v smeri izven ulitka (7), med iztekanjem mešanica zraka in peska odstrani preostanek jedra in očisti površino.When drilling sand cores, we use a dedicated hollow tool (2) which, by rotating and moving inside the casting (1), grinds the middle of the sand core (3); pressurized air flows through the holes in the tool (4) and flows through the holes in the direction of the ceramic tile (5) directly to the sand crushing site; the blown air moves the sand away from the casting (7), during the expiration the mixture of air and sand removes the rest of the core and cleans the surface.
Claims (1)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI201300077A SI24307A (en) | 2013-03-29 | 2013-03-29 | Boring of sand cores from castings |
PCT/SI2014/000015 WO2014158098A1 (en) | 2013-03-29 | 2014-03-14 | Boring of sand cores from castings |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI201300077A SI24307A (en) | 2013-03-29 | 2013-03-29 | Boring of sand cores from castings |
Publications (1)
Publication Number | Publication Date |
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SI24307A true SI24307A (en) | 2014-09-30 |
Family
ID=50555232
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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SI201300077A SI24307A (en) | 2013-03-29 | 2013-03-29 | Boring of sand cores from castings |
Country Status (2)
Country | Link |
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SI (1) | SI24307A (en) |
WO (1) | WO2014158098A1 (en) |
Family Cites Families (29)
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DE7408555U (en) * | 1974-10-24 | Schmid & Wezel | Device for removing core sand or the like | |
GB113569A (en) * | ||||
US3989227A (en) | 1974-10-10 | 1976-11-02 | General Kinematics Corporation | Fluid bed blender and cooler |
JPS54155934A (en) * | 1978-05-31 | 1979-12-08 | Toushin Sangiyou Kk | Removing core sand from casting material |
DE2947795C2 (en) | 1979-11-28 | 1982-01-28 | Bayerische Motoren Werke AG, 8000 München | Device for knocking out cores from castings |
GB2067938B (en) | 1980-01-17 | 1983-04-07 | Stoner & Saunders Andover Ltd | Casting-core knockout machine |
JPS57171566A (en) * | 1981-04-13 | 1982-10-22 | Sintokogio Ltd | Pretreatment for removal of core for casting |
CH654230A5 (en) | 1981-05-27 | 1986-02-14 | Werner Lueber | DEVICE FOR REMOVING THE CORE SAND FROM CAST PIECES. |
DE3319312C2 (en) | 1982-06-10 | 1984-08-02 | Gebr. Grundmann GmbH, Herzogenburg, Niederösterreich | Method and device for emptying cavities in workpieces |
IT1157143B (en) | 1982-12-14 | 1987-02-11 | Fataluminium Spa | GROUNDING DEVICE FOR CABLE METAL JETS |
US4718473A (en) | 1985-01-25 | 1988-01-12 | General Kinematics Corporation | Vibratory stress relief apparatus |
JPS63235063A (en) | 1987-03-24 | 1988-09-30 | Hitachi Metals Ltd | Apparatus for removing core sand of casting |
US4722386A (en) | 1987-04-23 | 1988-02-02 | General Kinematics Corporation | Casting core shakeout |
DE3728687A1 (en) | 1987-08-27 | 1989-03-09 | Froelich & Kluepfel Druckluft | METHOD AND DEVICE FOR COREING CASTING PIECES |
ES2046337T3 (en) | 1988-01-27 | 1994-02-01 | ®F.U.K.® Frolich & Klupfel Drucklufttechnik Gmbh & Co. Kg | DEVICE FOR REMOVING MALES FROM CASTING PARTS. |
ES2027426T3 (en) | 1988-01-27 | 1992-06-01 | ®F.U.K.® Frolich & Klupfel Drucklufttechnik Gmbh & Co. Kg | DEVICE FOR ELIMINATING MOLDS FROM CAST PIECES. |
FR2655895B1 (en) | 1989-12-19 | 1994-06-03 | Peugeot | MACHINE FOR CLEANING FOUNDRY PARTS. |
JPH07112621B2 (en) | 1990-11-07 | 1995-12-06 | ドーラー・ジヤービス・リミテツド・パートナーシツプ | Device that collapses and removes sand cores in castings by vibration |
AU1344692A (en) | 1991-02-07 | 1992-09-07 | Massin S.A. | Method and devices for decoring castings |
FR2699840B1 (en) | 1992-12-28 | 1995-02-10 | Peugeot | Machine for sanding castings. |
FR2711931B1 (en) | 1993-11-05 | 1996-02-09 | Dimafond | Improved device for cleaning the cores of casting of foundry parts. |
FR2730436B1 (en) | 1995-02-13 | 1997-05-09 | Peugeot | METHOD AND DEVICE FOR DESSABLING A FOUNDRY PIECE |
FR2742365B1 (en) | 1995-12-13 | 1998-01-16 | Outils Pneumatiques Globe | PNEUMATIC ASSEMBLY WITH APPROACH AND COMBINED STRIKE, DESSLING UNIT COMPRISING SUCH AN ASSEMBLY, DESSLING INSTALLATION COMPRISING SUCH A UNIT, AND METHOD FOR CONTROLLING SUCH AN INSTALLATION |
WO1997030805A1 (en) | 1996-02-23 | 1997-08-28 | Consolidated Engineering Company, Inc. | System and process for reclaiming sand |
FR2850305B1 (en) | 2003-01-23 | 2005-03-18 | Marcel Massin | AUTOMATED DELIVERY SYSTEM AND UNLOADING DEVICE |
FR2850890B1 (en) | 2003-02-10 | 2006-09-15 | Remi Dupuis | DEVICE FOR DESSABLING HOLLOW FOUNDRY PIECES |
JP4535773B2 (en) * | 2004-05-18 | 2010-09-01 | 本田技研工業株式会社 | Hollow camshaft sand removal device and method |
FR2901161B1 (en) | 2006-05-17 | 2009-03-06 | Disa Serf | DEVICE FOR DISENGAGING PARTS OF FOUNDRIES COMPRISING A RECEPTION AREA FOR PARTS DEFINED IN THE FORM OF A CLOSED SPACE. |
FR2901162B1 (en) | 2006-05-17 | 2009-07-24 | Marcel Massin | MARKING METHOD, MARKER DEVICE ACTIVATING A VIBRATOR SYSTEM AND USE OF THE DEVICE IN A CLEARING MACHINE |
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2013
- 2013-03-29 SI SI201300077A patent/SI24307A/en not_active IP Right Cessation
-
2014
- 2014-03-14 WO PCT/SI2014/000015 patent/WO2014158098A1/en active Application Filing
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WO2014158098A1 (en) | 2014-10-02 |
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