US3388478A - Method for cooling castings - Google Patents
Method for cooling castings Download PDFInfo
- Publication number
- US3388478A US3388478A US489714A US48971465A US3388478A US 3388478 A US3388478 A US 3388478A US 489714 A US489714 A US 489714A US 48971465 A US48971465 A US 48971465A US 3388478 A US3388478 A US 3388478A
- Authority
- US
- United States
- Prior art keywords
- drum
- castings
- sand
- cooling
- mold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D31/00—Cutting-off surplus material, e.g. gates; Cleaning and working on castings
- B22D31/002—Cleaning, working on castings
- B22D31/007—Tumbling mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/08—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by sprinkling, cooling, or drying
- B22C5/085—Cooling or drying the sand together with the castings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/18—Machines or apparatus for drying solid materials or objects with movement which is non-progressive on or in moving dishes, trays, pans, or other mainly-open receptacles
- F26B11/181—Machines or apparatus for drying solid materials or objects with movement which is non-progressive on or in moving dishes, trays, pans, or other mainly-open receptacles the receptacle being a foraminous, perforated or open-structured drum or drum-like container, e.g. rotating around a substantially horizontal or vertical axis; the receptacle being multiple perforated drums, e.g. in superimposed arrangement
Definitions
- ABSTRACT OF THE DISCLOSURE The mold sand and cast metal contents of the mold flask are dumped into a horizontal drum wherein these contents are tumbled into intimate contact to simultaneously cool the cast metal and to dry the mold sand.
- the drum has an imperforate inlet section wherein the cooling and drying mainly takes place and beyond this is a perforate section from which the dry mold sand is discharged.
- a sleeve around the drum and longitudinally adjustable thereon may be positioned to block ofi part of the perforate section.
- the invention has for its object to carry out the cooling of the castings rapidly without causing damage to the castings after the flasks have initially been cooled.
- the contents of the flasks according to the invention are dumped into a room provided with an outlet for the generated steam and the castings and the mold sand remain in said room in intimate contact with each other during a predetermined time.
- the flasks When dumping the contents of the flasks in said room the flasks have a temperature of about 600 C. but the mean temperature of the mold sand is much lower and depends on the ratio of the quantities of metal and sand, the surface area and the volume of the casting.
- the room mentioned above may advantageously be constituted by a rotary drum as by the rotation of the drum the castings are continuously contacted by other quantities of sand whereby the withdrawal of heat from the castings will be eflicient.
- the foremost part of the drum which has an unperforated circumferential wall then constitutes the room for cooling the castings and for drying the sand.
- To said first unperforated part of the drum a part having a perforated wall is joint.
- the withdrawal of heat from the castings may still be furthered by generating a flow of air of lower temperature through the drum preferably in counter current to the castings.
- the drum 1 is rotatably supported on rollers 2 and at one of its end walls is provided with an inlet 3 for emptying the flasks into the drum and at its opposite end wall with an outlet 4 for castings freed from sand and with an outlet 5 for the generated steam.
- the circumferential wall of the drum is provided with perforations 6 on part of its length and said perforations may have a diameter of about 0.8 inch and a pitch of e.g. 8 inches.
- the length of said perforated wall part of the drum may be varied by providing one or two slidable sleeves 9 around the drum.
- the sand passed through the perforations 6 is completely dry "and contains no lumps as said lumps have been pulverized by the castings and the sand drops into a stationary chute 7 tightly engaging the wall of the drum. If required water may be introduced into the drum by means of a conduit 8.
- the first part of the drum wall in which the contents of the emptied flasks are received has no perforations as said part of the drum serves as a drying zone.
- the movement of the mass in the drum is obtained in known manner by means of blades (not shown) secured at the inner side of the drum wall and which preferably are adjustable for varying the speed of the movement of the mass and thus the cooling of the castings.
- the evaporation of the water contained in the sand and therefore the cooling of the castings and of the sand may be accelerated by maintaining a reduced pressure in the drum.
- the degree of filling of the drum should be maintained between predetermined limits.
- the castings leaving the drum through the outlet 4 are already partly cleaned so that the treatment thereof by means of a blast of steel grit may be shortened and beating out the cores if any is not necessary. It appears that by the short duration of treatment in the drum the shape and the dimensions of the sand grains are not affected.
- the sand is obtained completely free of moisture the addition of water when mixing sand for repeated use for making mold may be maintained within narrow limits.
- the advantage is obtained that the moisture free sand in a thin layer of e.g. 0.2 inch may be moved over a magnet for withdrawing particles of iron as far as possible from the sand. Moreover, the completely dry sand will not tend to adhere together when stored.
- a method for cooling castings and for drying the mold sand used for said castings which comprises,
- cooling liquid is introduced into the drum while the castings and mold sand are being tumbled in intimate contact, the amount of cooling liquid introduced being sufficient to cool the castings but insufficient to be retained by the mold sand.
- a machine for cooling castings and drying mold sand comprising a substantially horizontal cylindrical drum
- said drum having an inlet opening at one end and a discharge opening at its other end, and said drum having a circumferentially perforate section between such ends to define an imperforate mold sand and casting section at said perforate section,
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Handcart (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL6411744A NL6411744A (fr) | 1964-10-09 | 1964-10-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3388478A true US3388478A (en) | 1968-06-18 |
Family
ID=19791199
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US489714A Expired - Lifetime US3388478A (en) | 1964-10-09 | 1965-09-23 | Method for cooling castings |
Country Status (8)
Country | Link |
---|---|
US (1) | US3388478A (fr) |
BE (1) | BE670740A (fr) |
DE (1) | DE1281119B (fr) |
FR (1) | FR1449405A (fr) |
GB (1) | GB1125757A (fr) |
NL (1) | NL6411744A (fr) |
NO (1) | NO115227B (fr) |
SE (1) | SE313637B (fr) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4993224A (fr) * | 1972-09-29 | 1974-09-05 | ||
US3958623A (en) * | 1973-07-16 | 1976-05-25 | Expert N.V. | Cooler-drier for castings and moulding sand |
US3998262A (en) * | 1975-01-06 | 1976-12-21 | Didion Charles J | Casting shake-out unit and method of operation |
USRE29709E (en) * | 1972-09-29 | 1978-07-25 | Expert, N.V. | Apparatus for cooling castings and for cooling and drying moulding sand |
US4674691A (en) * | 1985-10-24 | 1987-06-23 | Didion Manufacturing Company | Dual sand reclaimer |
US5095968A (en) * | 1990-04-09 | 1992-03-17 | Didion Manufacturing Co. | Rotary media drum with cooling component |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49147321U (fr) * | 1973-04-26 | 1974-12-19 | ||
DE2660116C2 (de) * | 1976-02-23 | 1981-10-01 | Mec-Fond S.p.A., S. Prospero, Modena | Vorrichtung zur Abführung von Gußstücken und Formsand |
DE2607265C3 (de) | 1976-02-23 | 1979-04-19 | Mec-Fond S.P.A., S. Prospero, Modena (Italien) | Vorrichtung zum Kühlen von Gußteilen und Formsand |
CH682056A5 (fr) * | 1990-03-08 | 1993-07-15 | Fischer Ag Georg | |
US5924473A (en) * | 1996-12-20 | 1999-07-20 | General Kinematics Corporation | Vibratory sand reclamation system |
US5901775A (en) * | 1996-12-20 | 1999-05-11 | General Kinematics Corporation | Two-stage heat treating decoring and sand reclamation system |
US6453982B1 (en) | 1996-12-20 | 2002-09-24 | General Kinematics Corporation | Sand cleaning apparatus |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1979602A (en) * | 1930-08-02 | 1934-11-06 | Svenska Flaektfabriken Ab | Apparatus for carrying out heat exchange processes |
US1996227A (en) * | 1934-04-05 | 1935-04-02 | Int Harvester Co | Tumbling mill |
US2465632A (en) * | 1947-04-08 | 1949-03-29 | Paul P Burns | Tumble barrel |
US2523258A (en) * | 1947-06-06 | 1950-09-19 | Ransohoff Inc N | Continuous feed tumbling mill |
US2955305A (en) * | 1957-04-12 | 1960-10-11 | Co Bartlett & Snow Co | Sprue cleaning mill |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2600206A (en) * | 1948-08-31 | 1952-06-10 | Simpson Herbert Corp | Automatic shakeout device for tight flask molds |
-
1964
- 1964-10-09 NL NL6411744A patent/NL6411744A/xx unknown
-
1965
- 1965-09-23 US US489714A patent/US3388478A/en not_active Expired - Lifetime
- 1965-09-24 GB GB40820/65A patent/GB1125757A/en not_active Expired
- 1965-09-27 NO NO159866A patent/NO115227B/no unknown
- 1965-10-06 SE SE12968/65A patent/SE313637B/xx unknown
- 1965-10-08 FR FR34175A patent/FR1449405A/fr not_active Expired
- 1965-10-08 DE DEL51820A patent/DE1281119B/de active Pending
- 1965-10-11 BE BE670740D patent/BE670740A/xx unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1979602A (en) * | 1930-08-02 | 1934-11-06 | Svenska Flaektfabriken Ab | Apparatus for carrying out heat exchange processes |
US1996227A (en) * | 1934-04-05 | 1935-04-02 | Int Harvester Co | Tumbling mill |
US2465632A (en) * | 1947-04-08 | 1949-03-29 | Paul P Burns | Tumble barrel |
US2523258A (en) * | 1947-06-06 | 1950-09-19 | Ransohoff Inc N | Continuous feed tumbling mill |
US2955305A (en) * | 1957-04-12 | 1960-10-11 | Co Bartlett & Snow Co | Sprue cleaning mill |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4993224A (fr) * | 1972-09-29 | 1974-09-05 | ||
US3942644A (en) * | 1972-09-29 | 1976-03-09 | Expert N.V. | Apparatus for cooling castings and for cooling and drying moulding sand |
USRE29709E (en) * | 1972-09-29 | 1978-07-25 | Expert, N.V. | Apparatus for cooling castings and for cooling and drying moulding sand |
US3958623A (en) * | 1973-07-16 | 1976-05-25 | Expert N.V. | Cooler-drier for castings and moulding sand |
US3998262A (en) * | 1975-01-06 | 1976-12-21 | Didion Charles J | Casting shake-out unit and method of operation |
US4674691A (en) * | 1985-10-24 | 1987-06-23 | Didion Manufacturing Company | Dual sand reclaimer |
US5095968A (en) * | 1990-04-09 | 1992-03-17 | Didion Manufacturing Co. | Rotary media drum with cooling component |
Also Published As
Publication number | Publication date |
---|---|
GB1125757A (en) | 1968-08-28 |
DE1281119B (de) | 1968-10-24 |
NO115227B (fr) | 1968-09-02 |
BE670740A (fr) | 1966-01-31 |
SE313637B (fr) | 1969-08-18 |
NL6411744A (fr) | 1966-04-12 |
FR1449405A (fr) | 1966-08-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3388478A (en) | Method for cooling castings | |
US3871438A (en) | Process for regenerating resin-bonded foundry sand | |
GB1433546A (en) | Apparatus for cooling castings and for cooling and drying moulding sand | |
MX2014012288A (es) | Un aparato y un metodo para recuperar arena de fundicion. | |
US3469324A (en) | Rotary drum for cooling castings | |
US4154290A (en) | Device for cooling castings and for treating moulding sand | |
US2443620A (en) | Process for heat-treating materials | |
US2675333A (en) | Pipe apparatus | |
US2262184A (en) | Method and apparatus for coating molds | |
US3838847A (en) | Drum mixer for continuous processing of a granular bulk material | |
AU775054B2 (en) | Apparatus for blending water with sand | |
US3277540A (en) | Device for refining foundry sand in a continuous manner | |
US1581635A (en) | Rotary casting method and apparatus | |
US1483241A (en) | Method and apparatus for granulating liquid slag | |
US2547086A (en) | Heating drum | |
US1516913A (en) | Rotary grinding machine | |
US1645742A (en) | Process of chilling and aerating fluids and device for carrying out said process | |
US3050795A (en) | Continuous type sand mixer | |
SU1271625A1 (ru) | Устройство дл охлаждени гор чих сыпучих материалов | |
US3271018A (en) | Rotary calcining kiln | |
US2688468A (en) | Apparatus for treatment of cream and milk | |
US2230166A (en) | Contrivance for conching chocolate mass | |
US1834577A (en) | Diffusion apparatus | |
KR900005442B1 (ko) | 볼형 건조기 | |
JPS5835456Y2 (ja) | 主として合成樹脂材料の乾燥装置 |