US1570929A - Method of protecting the surface of metal molds - Google Patents

Method of protecting the surface of metal molds Download PDF

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Publication number
US1570929A
US1570929A US32279A US3227925A US1570929A US 1570929 A US1570929 A US 1570929A US 32279 A US32279 A US 32279A US 3227925 A US3227925 A US 3227925A US 1570929 A US1570929 A US 1570929A
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United States
Prior art keywords
protecting
molds
metal molds
flame
mold
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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
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US32279A
Inventor
Stanley M Udale
Daniel H Meloche
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.)
Individual
Original Assignee
Individual
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Publication date
Priority claimed from US559076A external-priority patent/US1536952A/en
Application filed by Individual filed Critical Individual
Priority to US32279A priority Critical patent/US1570929A/en
Application granted granted Critical
Publication of US1570929A publication Critical patent/US1570929A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns

Definitions

  • na'rnon or rno'rncrme 'rnzn' summon or METAL moans.
  • This invention relates to improved means for the protection of surfaces of metal molds used in the continuous production of metal castings.
  • This invention consists essentially in the application to a permanent mold of a refractory coating applied by means of a blow torch.
  • the molds are preferably made of cast iron and the chief object of this invention'is to provide means for the protection of the surfaces of such molds when used for the production of gray iron castin s.
  • the actual method racticed y the applicants is shown in the gure, in which a pipe A is connected to a regulable supply of oxygen and acetylene.
  • the pipe A is threaded into the casing B, which is preferably lined with a refractoryvcoatin Air entrances G and D may be provide as required.
  • a depression E is located in the casing B forming acrater. Opposite this crater E is the o ening F, through which the refractory pow er is; fed into the crater E.
  • the casing B and crater E are protected by a refractory lining G.
  • the amount of oxygen and the area of the air openings C and D are regulated so that an-intensely hot flame results.
  • H represents a permanent master positive mold which is to be protected b means of a refractory coatin
  • the ame is directed against the modds H and as the refractory owder is highl heated as it travels towar the mold throug' the flame it therefore arrives at the mold in Y a highly heated state and as the mold is also heated by the flame directed upon it, the refractory substance adheres to the mold.
  • the refractory particles which are very finely divided, are at a white heat when they strike the heated mold, which accounts for the fact that they do adhere firmly enough
  • the function ofthe crater is to catch' particles not carried directly into the flame, eat these particles, and by means of the violent eddy in this crater to return theseparticles to the flame.

Description

Jan. 26 1926.
Original Filed May 6, 1922 INVENTORS,
A TTORNEY.
Patented Jan. 26, 1926.
UNITED STATES PATENT OFFICE.
STANLEY I. UDALE ANDJJANIEL H. IELOCHE, OF DETROIT. IICHIGANZ.
na'rnon or rno'rncrme 'rnzn' summon or METAL moans.
Original application filed Kay 6, 1822, Serial In. 550,078. Divided and this application iilecl Kay 18,
1885. Serial 1T0. 32,279.
United States, residing at 893 Lothrop Ave,
5 and 2490 Hazelwood Ave, Detroit, respectiveilly, in the county of Wayne and State of ichigan,'have invented certain new and useful Improvements in Methods of Protecting the Surface of Metal Molds, of.
which the following is a specification.
This invention relates to improved means for the protection of surfaces of metal molds used in the continuous production of metal castings. This invention consists essentially in the application to a permanent mold of a refractory coating applied by means of a blow torch.
. The molds are preferably made of cast iron and the chief object of this invention'is to provide means for the protection of the surfaces of such molds when used for the production of gray iron castin s.
The actual method racticed y the applicants is shown in the gure, in which a pipe A is connected to a regulable supply of oxygen and acetylene. The pipe A is threaded into the casing B, which is preferably lined with a refractoryvcoatin Air entrances G and D may be provide as required. A depression E is located in the casing B forming acrater. Opposite this crater E is the o ening F, through which the refractory pow er is; fed into the crater E. The casing B and crater E are protected by a refractory lining G. The amount of oxygen and the area of the air openings C and D are regulated so that an-intensely hot flame results. H represents a permanent master positive mold which is to be protected b means of a refractory coatin The ame is directed against the modds H and as the refractory owder is highl heated as it travels towar the mold throug' the flame it therefore arrives at the mold in Y a highly heated state and as the mold is also heated by the flame directed upon it, the refractory substance adheres to the mold. The refractory particles, which are very finely divided, are at a white heat when they strike the heated mold, which accounts for the fact that they do adhere firmly enough The function ofthe crater is to catch' particles not carried directly into the flame, eat these particles, and by means of the violent eddy in this crater to return theseparticles to the flame. Y
This application is a divisional a plication of our Patent #1,536,952,'is sue May 5th, 1925. 7
What we claim is The method of protecting the metal surface of permanent iron molds, which'consists in heating thesurface of the iron molds by means of the flame of a blow torch directed against the surface of-the said molds and injecting into the flame powered magneslum oxide, whereby the particles of magnesium oxide arecarried against the surface of the iron molds which are thereby coated with the magnesium oxide.
In testimony whereof we aiiix our signa "v tures.
STANLEY M. UDALE. DANIEL H. MELOCHE.
US32279A 1922-05-06 1925-05-23 Method of protecting the surface of metal molds Expired - Lifetime US1570929A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US32279A US1570929A (en) 1922-05-06 1925-05-23 Method of protecting the surface of metal molds

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US559076A US1536952A (en) 1922-05-06 1922-05-06 Method of protecting the surfaces of metal molds
US32279A US1570929A (en) 1922-05-06 1925-05-23 Method of protecting the surface of metal molds

Publications (1)

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US1570929A true US1570929A (en) 1926-01-26

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US32279A Expired - Lifetime US1570929A (en) 1922-05-06 1925-05-23 Method of protecting the surface of metal molds

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3088906A (en) * 1959-12-07 1963-05-07 Norton Co Cathode bar for aluminum reduction cell
US3254380A (en) * 1964-06-11 1966-06-07 Union Carbide Corp Casting process
US3271653A (en) * 1961-08-22 1966-09-06 Westinghouse Electric Corp Non-stick metallic cooking vessel
US3450574A (en) * 1966-11-14 1969-06-17 Northern Electric Co Method of coating refractory wares with magnesia
US6302185B1 (en) * 2000-01-10 2001-10-16 General Electric Company Casting having an enhanced heat transfer surface, and mold and pattern for forming same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3088906A (en) * 1959-12-07 1963-05-07 Norton Co Cathode bar for aluminum reduction cell
US3271653A (en) * 1961-08-22 1966-09-06 Westinghouse Electric Corp Non-stick metallic cooking vessel
US3254380A (en) * 1964-06-11 1966-06-07 Union Carbide Corp Casting process
US3450574A (en) * 1966-11-14 1969-06-17 Northern Electric Co Method of coating refractory wares with magnesia
US6302185B1 (en) * 2000-01-10 2001-10-16 General Electric Company Casting having an enhanced heat transfer surface, and mold and pattern for forming same

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