[go: up one dir, main page]

US3409069A - Method of casting steel in a shell mold - Google Patents

Method of casting steel in a shell mold Download PDF

Info

Publication number
US3409069A
US3409069A US524145A US52414566A US3409069A US 3409069 A US3409069 A US 3409069A US 524145 A US524145 A US 524145A US 52414566 A US52414566 A US 52414566A US 3409069 A US3409069 A US 3409069A
Authority
US
United States
Prior art keywords
mold
casting
shell mold
shell
water
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
Application number
US524145A
Other languages
English (en)
Inventor
James T Baker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Amsted Industries Inc
Original Assignee
Amsted Industries Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Amsted Industries Inc filed Critical Amsted Industries Inc
Priority to US524145A priority Critical patent/US3409069A/en
Priority to FR92881A priority patent/FR1509604A/fr
Priority to ES336132A priority patent/ES336132A1/es
Priority to BE693383D priority patent/BE693383A/xx
Application granted granted Critical
Publication of US3409069A publication Critical patent/US3409069A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C23/00—Tools; Devices not mentioned before for moulding

Definitions

  • This invention relates generally to shell molding and more particularly to the elimintation of surface defects in steel castings produced in conventional shell molds.
  • Shell molds are generally formed of a mixture of zircon or silica sand and a thermosetting phenolic resin either in powder form or in a solvent.
  • the mixture of sand and resin is packed around a heated pattern to set the resin to bind the sand particles into a shell mold with a cavity of the configuration of the pattern.
  • Another object of this invention is to provide a method of casting steel in shell molds wherein cracking of the skin of the casting is substantially, if not completely, prevented.
  • FIGURE 1 is a cross-sectional view in elevation of a shell mold and associated structure
  • FIGURE 2 is a view similar to FIGURE 1 illustrating an alternative embodiment of this invention.
  • reference numeral denotes a conventional shell mold formed of two halves 12 and 14 which when placed together form a cavity 16 into which molten metal is poured.
  • the cavity 16 is illustrated schematically in the drawings because the contour of the casting is immaterial to the successful operation of this invention.
  • the two mold halves 12 and 14 are positioned in a box 18 or other similar receptacle.
  • Sand 20 which has been thoroughly wet with water is placed around the two mold halves and may be vibrated or packed into place in order to support the mold in its upright position.
  • wet sand 20 may be eliminated and the mold supported by braces 22 as is shown in FIGURE 2.
  • water 24 containing a suitable wetting agent is poured over the outside of the mold 10 to wet substantially, if not all, of the exterior surface 26 of the mold 10.
  • suitable wetting agents are, for example, ethyl alcohol or sodium dioctyl sulfosuccinate in a water and 5% lower alcohol solution.
  • Molten metal is then poured into the mold 10 through an opening (not shown) in the conventional manner.
  • the castings take from the mold 10 after the casting had solidified exhibited substantially less tendency to crack in service than did those castings taken from molds which were not contacted by either water or wet sand.
  • a method of casting steel comprising pouring water and a wetting agent over the externalsurface of a shell mold and pouring molten steel into said shell mold, said water generating a water vapor atmosphere at the surface of the mold which contacts the molten steel and maintaining said water vapor atmosphere until the surface of the casting which contacts the mold has permanently solidified.
  • a method of casting steel comprising packing water wet sand around the external surface of a shell mold and pouring molten steel into said shell mold, said water generating a water vapor atmosphere at the surface of the mold which contacts the molten steel and maintaining said water vapor atmosphere until the surface of the casting which contacts the mold has permanently solidified.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mold Materials And Core Materials (AREA)
US524145A 1966-02-01 1966-02-01 Method of casting steel in a shell mold Expired - Lifetime US3409069A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US524145A US3409069A (en) 1966-02-01 1966-02-01 Method of casting steel in a shell mold
FR92881A FR1509604A (fr) 1966-02-01 1967-01-27 Procédé de moulage en coquille
ES336132A ES336132A1 (es) 1966-02-01 1967-01-27 Un metodo de moldear acero.
BE693383D BE693383A (uk) 1966-02-01 1967-01-30

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US524145A US3409069A (en) 1966-02-01 1966-02-01 Method of casting steel in a shell mold

Publications (1)

Publication Number Publication Date
US3409069A true US3409069A (en) 1968-11-05

Family

ID=24087956

Family Applications (1)

Application Number Title Priority Date Filing Date
US524145A Expired - Lifetime US3409069A (en) 1966-02-01 1966-02-01 Method of casting steel in a shell mold

Country Status (4)

Country Link
US (1) US3409069A (uk)
BE (1) BE693383A (uk)
ES (1) ES336132A1 (uk)
FR (1) FR1509604A (uk)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982000786A1 (en) * 1980-08-29 1982-03-18 Alt A Metal molding process using sand hollow forms
US4998581A (en) * 1988-12-16 1991-03-12 Howmet Corporation Reinforced ceramic investment casting shell mold and method of making such mold

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2507608A (en) * 1946-10-28 1950-05-16 Ernest B Miller Apparatus for dehydrating gas and recovering condensable hydrocarbons therefrom
US2518055A (en) * 1946-09-13 1950-08-08 Hastings Mfg Co Apparatus for making centrifugal castings
US2753608A (en) * 1952-03-14 1956-07-10 Aluminum Co Of America Non-reactive gypsum plaster mold and method of casting therein
US2858589A (en) * 1955-09-29 1958-11-04 Morris Bean & Company Ductile iron castings and methods of making same
US3354935A (en) * 1963-04-13 1967-11-28 Fuchs Kg Otto Manufacture of light-metal castings

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2518055A (en) * 1946-09-13 1950-08-08 Hastings Mfg Co Apparatus for making centrifugal castings
US2507608A (en) * 1946-10-28 1950-05-16 Ernest B Miller Apparatus for dehydrating gas and recovering condensable hydrocarbons therefrom
US2753608A (en) * 1952-03-14 1956-07-10 Aluminum Co Of America Non-reactive gypsum plaster mold and method of casting therein
US2858589A (en) * 1955-09-29 1958-11-04 Morris Bean & Company Ductile iron castings and methods of making same
US3354935A (en) * 1963-04-13 1967-11-28 Fuchs Kg Otto Manufacture of light-metal castings

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982000786A1 (en) * 1980-08-29 1982-03-18 Alt A Metal molding process using sand hollow forms
US4998581A (en) * 1988-12-16 1991-03-12 Howmet Corporation Reinforced ceramic investment casting shell mold and method of making such mold
USRE34702E (en) * 1988-12-16 1994-08-23 Howmet Corporation Reinforced ceramic investment casting shell mold and method of making such mold

Also Published As

Publication number Publication date
ES336132A1 (es) 1968-01-01
FR1509604A (fr) 1968-01-12
BE693383A (uk) 1967-07-03

Similar Documents

Publication Publication Date Title
US3302919A (en) Apparatus for casting metal wheels
US3222738A (en) Methods of removing expendable plastic patterns
US3409069A (en) Method of casting steel in a shell mold
US3404724A (en) Method of casting in a shell molding
US2922255A (en) Mold apparatus for casting glass
US3041688A (en) Shell mold for investment castings and method of making same
US5092390A (en) Method and mold for sand casting varying thickness articles
US3565163A (en) Foundry mold
US3460605A (en) Method for casting in a permanent mold a casting having thick and thin sections
JPS6354466B2 (uk)
US2832112A (en) Shell mold casting and method
SU616052A1 (ru) Способ изготовлени облицованных кокилей
US3644608A (en) Method of making a non-metallic cast chill
US2775803A (en) Chill plates
US1962490A (en) Article and method of casting the same
JPH089092B2 (ja) 鋳造方法
US3206811A (en) Mold and core arrangement for casting hollow elongated bodies
GB549016A (en) Improved method of casting metal articles
GB2048143A (en) A method for hardening foundry moulds and cores
US3794101A (en) Method of casting metals in metal mold
US1295277A (en) Method of casting glass-molds.
US1565755A (en) Method of treating ingot molds
US1511224A (en) Casting appliance
JP2984753B2 (ja) 消失性模型を用いた鋳造方法およびその装置
US1191473A (en) Manufacture of molds.