US3888297A - Method of producing ferrous castings with cast-in ferrous inserts - Google Patents

Method of producing ferrous castings with cast-in ferrous inserts Download PDF

Info

Publication number
US3888297A
US3888297A US412177A US41217773A US3888297A US 3888297 A US3888297 A US 3888297A US 412177 A US412177 A US 412177A US 41217773 A US41217773 A US 41217773A US 3888297 A US3888297 A US 3888297A
Authority
US
United States
Prior art keywords
coating
insert
cast
casting
ferrous
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
US412177A
Inventor
Barry J Davies
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.)
Norcast Inc
Original Assignee
Ivacan 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 Ivacan Inc filed Critical Ivacan Inc
Priority to US412177A priority Critical patent/US3888297A/en
Application granted granted Critical
Publication of US3888297A publication Critical patent/US3888297A/en
Assigned to NORCAST INC. reassignment NORCAST INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: CANRON INC.
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
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/02—Casting in, on, or around objects which form part of the product for making reinforced articles

Definitions

  • ABSTRACT A method of producing ferrous castings with cast-in ferrous metal inserts comprising the steps of preparing the surface of the ferrous metal insert which is to be cast to receive a bondable coating, applying at least one coating of a coating composition consisting of a finely divided macroscopic refractory solid particles suspended in an aqueous liquid containing a binder to the surface of the metal insert and allowing the coating to dry to form a hard nonyieldab1e refractory coating.
  • the insert is then located in a mold in a manner such that it cannot be displaced during casting and a ferrous metal is cast about the refractory coated insert.
  • the refractory coating prevents carburization of the insert and fusion of the insert with respect to the casting.
  • This invention relates to the production of ferrous castings with cast-in ferrous metal inserts.
  • this invention relates to an improved method of preventing carburization and fusion of a cast-in ferrous metal insert with respect to a ferrous casting.
  • Castings have also been reinforced by means of reinforcing rod structures.
  • the reinforcing rod structures have previously been coated in a special apparatus with a mixture of resin and sand.
  • the reinforcing member must be preheated and thereafter placed in a special apparatus and covered with a mixture of resin and sand.
  • the reinforcing structure must remain in the apparatus for a period of time sufficient to permit a buildup of the required thickness of the surface layer.
  • the coating which has been applied at this stage is soft and may easily be damaged in handling.
  • the reinforcing member with the coating applied must again be heated to a temperature sufficient to set the coating. This is a costly and time consuming method which requires a complex apparatus.
  • the apparatus in which the coating is to be applied must also be very large.
  • the presence of a resin in the mixture of the coating tends to cause gases to be generated during the casting process which adversely affects the quality of the casting.
  • the coating has a substantial thickness and it includes a sand mass, it is subject to spalling" and must, therefore, be handled with care.
  • the present invention overcomes the difficulties of the prior art described above and provides a simple and efficient method of producing a ferrous casting with cast-in ferrous metal inserts comprising the steps of preparing the surface of the ferrous metal insert which is to be cast-in to receive a bondable coating, applying at least one coating of a refractory coating which when set is capable of resisting carburization and fusion during casting, locating the insert in a mold in a manner such that it cannot be displaced during casting and casting a ferrous metal about the insert.
  • the present invention also provides an improved ferrous casting having cast-in ferrous metal inserts cornprising a body of cast ferrous material having cast-in ferrous metal inserts coated with a thin, hard, nonyieldable refractory coating capable of resisting carburization and fusion during the casting operation, said coating having an outer surface which is slidable with respect to said casting to permit relative movement of the casting with respect to the inserts.
  • FIG. 1 is a partially sectioned pictorial view illustrating a casting with a cast in ferrous metal insert in the form of a threaded bolt;
  • FIG. 2 is a partially sectioned pictorial view of a casting with a ferrous metal shaft cast therein;
  • FIG. 3 is a partially sectioned pictorial view illustrating a cast'in ferrous metal reinforcement
  • FIG. 4 is a view similar to FIG. 3 showing an alternative form of cast-in ferrous metal reinforcement.
  • the bolt 10 may be conveniently positioned with respect to a casting 12 by casting around the head of the bolt. This is achieved by applying a coating of the type which will be described hereinafter to the surface of the bolt 10 and thereafter locating the bolt 10 in the mold and thereafter casting the ferrous metal about the bolt head to provide the combination of a casting and bolt as illustrated in FIG. 1.
  • the bolt is preferably made from a strong ductile steel material while the casting may be made from steel or cast iron.
  • the insert is in the form of a shaft I4 which may be made from a nodular cast iron or steel or the like, about which a cylindrical shaped casting 16 is formed.
  • a shaft I4 which may be made from a nodular cast iron or steel or the like, about which a cylindrical shaped casting 16 is formed.
  • the surface of the shaft 14 is coated with the refractory coating as will be described hereinafter and located in a position within the mold such that it cannot be displaced during casting.
  • the cylindrical casting is then formed about the shaft 14.
  • a feature of the inserts l0 and 14 of the embodiments illustrated in FIGS. 1 and 2 of the drawings is that they are exposed at one or more surfaces of the casting. This permits the insert to function as a component used to operably connect or unite the cast member to complementary component parts of an assembly in which the cast element is to be used.
  • the cast-in insert may be in the form of a reinforcing element such as the expanded sheet metal element 18 of FIG. 3.
  • the expanded sheet metal element I8 is located within the body of a casting 20.
  • the expanded metal reinforcement 18 is coated with the refractory coating of the type described hereinafter prior to the formation of a casting.
  • the reinforcing element 18 serves to hold the casting together. Because of the fact that carburization is prevented, the reinforcing structure retains its inherent ductility so that it will not fracture simultaneously with the structure of the casting. Because the coating prevents fusion between the reinforcing and the casting. the reinforcement is not excessively strained by expansion or contraction of the casting.
  • FIG. 4 of the drawings A still further embodiment of the invention is illustrated in FIG. 4 of the drawings wherein the casting 22 is reinforced by a welded frame structure 24 which consists of a plurality of rods 26 and 28 which are secured to one another as by welding into a grid pattern. After formation of the grid pattern, the reinforcement is coated with a coating to be described hereinafter and the casting formed around the reinforcement in a mold.
  • a coating composition suitable for application to a ferrous metal insert such as steel or nodular cast iron which is to be cast-in a ferrous casting, consists of a macroscopic finely divided refractory solid particles suspended in a aqueous liquid containing a binder.
  • a suitable composition may be a vitreous silica dispersion.
  • Alternative compositions may include non-silicose refractories such as alumina and graphite.
  • the binder is preferably in the form of a colloidal silica so].
  • the proportions of the refractory solid particles and the aqueous liquid containing the binder are preferably within the range of to 70% by weight and 30 to 90% by weight respectively.
  • the suspension is stabilized by intimate dispersion therewith and the stabilizing amount of xanthomonas hydrophylic colloid.
  • a coating of this type which has been found to have satisfactory resistance to carburizing is presently used to prevent fusion of cast ingots to an ingot stool.
  • the problems associated with carburization are critical to the present invention but are not of any concern in the use of the coating in association with an ingot cast ing stool. The only problem encountered in this application is one of fusion.
  • a coating suitable for use in the present invention is known by the registered trade mark NALCOTE 4l20 and is manufactured by Alchem Limited of Burlington, Ontario. It has been found that a coating thickness of the order of about 0.005 inches provides adequate protection in most casting, however, the thickness can be increased if necessary by the application of additional coats to 0.015 inches or more as required.
  • the ferrous metal insert or reinforcement is shaped or formed if necessary to the required configuration. This may require bending and/or welding of the steel components as previously described. When the structure is welded, it is sometimes desirable to stressrelieve the structure to relieve the stresses caused by welding.
  • the steel insert is cleaned to remove all dirt, rust, mill scale, grease, oil or the like so that the surface of the insert is bondable with the coating which is subsequently applied. lf the surface of the insert is smooth and polished, it is desirable to shot blast the surface to provide a surface finish which is conducive to good adhesion with the coating. While it is not essential to the formation of the layer of the coating, the insert may be preheated prior to the application of the coating to approximately l50F.
  • the insert is then coated with Le coming composition previously described.
  • the coating may be applied with a brush, by spray ng or by dipping or the like. It has been found that a single coating of the composition previously described is generally sufficient. However, additional coatings may be applied if desired.
  • the coating is then allowed to dry. Drying of the coating may be assisted by blowing warm air or by the application of heat lamps or the like. If this post-dry mg operation is carried out, the preheating step previoiusly described may be eliminated. When the coating has dried, it forms a thin, hard, non-yieldable refractory coating on the surface of the steel insert.
  • the steel insert is then previously in a mold in such a manner that it will not move during the casting operation except as a result of minor warpage which may occur during casting.
  • the molten ferrous metal which may be in the form of white, grey or nodular cast iron, or any combination thereof, or cast steel, is then cast into the mold in such a manner that the ferrous metal insert is embedded in the casting.
  • the present invention provides a simple and efficient method of forming a ferrous casting with a cast-in ferrous metal insert. This method permits the coating to be applied without difficulty and is not restricted by the dimensional characteristics of the apparatus in which coating is carried out.
  • a method of producing ferrous castings with castin ferrous metal inserts comprising the steps of a. preparing the surface of the ferrous metal insert which is to be cast-in to receive a bondhle coating,

Abstract

A method of producing ferrous castings with cast-in ferrous metal inserts comprising the steps of preparing the surface of the ferrous metal insert which is to be cast to receive a bondable coating, applying at least one coating of a coating composition consisting of a finely divided macroscopic refractory solid particles suspended in an aqueous liquid containing a binder to the surface of the metal insert and allowing the coating to dry to form a hard non-yieldable refractory coating. The insert is then located in a mold in a manner such that it cannot be displaced during casting and a ferrous metal is cast about the refractory coated insert. The refractory coating prevents carburization of the insert and fusion of the insert with respect to the casting.

Description

United States Patent [1 1 Davies 1 June 10, 1975 METHOD OF PRODUCING FERROUS CASTINGS WITH CAST-IN FERROUS INSERTS [75] lnventor:
[73] Assignee: Canron Limited, Montreal, Quebec,
Canada [22] Filed: Nov. 2, 1973 [21] Appl. No.: 412,177
Barry J. Davies, Hamilton, Canada 164/112 US, 110,103,105, 80, 59, 97, 78, 86, 102, 104, 98,109, 75, 72, 332, 333, 334; 75/20 R, 20 F; 249/144, 146, 147
[56] References Cited UNITED STATES PATENTS 9,350 10/1852 Yale 164/110 1,025,817 5/1912 Luckenbach 164/100 1,172,363 2/1916 Jones 164/110 2,872,715 2/1959 Bean 164/10 3,045,301 7/1962 Webbere... 164/371 3,184,815 5/1965 Reuter 22/2165 3,396,935 8/1968 Snyder 164/72 3,428,464 2/1969 Pollard 106/3823 3,461,944 8/1969 Kuebrich 164/75',100
3,468,813 9/1969 Mindick 252/313 3,509,936 5/1970 Kearfott et a1... 164/72 3,568,723 3/1971 Sowards 164/98 2,690,004 9/1954 Crawford 164/1 1 1 3,822,736 7/1974 Andionev et a1. 164/100 R26,969 10/1970 O'Shea 164/72 FOREIGN PATENTS OR APPLlCATlONS 1,904,135 9/1969 Germany 164/411 295,798 11/1969 Australia 164/72 105,075 10/1917 United Kingdom 164/41 1 1,240,944 7/1971 United Kingdom.... 164/75 1,191,202 5/1970 United Kingdom 164/332 Primary Examiner-Francis S. Husar Assistant ExaminerV. K. Rising Attorney, Agent, or Firm-Fetherstonhaugh & Co.
[57] ABSTRACT A method of producing ferrous castings with cast-in ferrous metal inserts comprising the steps of preparing the surface of the ferrous metal insert which is to be cast to receive a bondable coating, applying at least one coating of a coating composition consisting of a finely divided macroscopic refractory solid particles suspended in an aqueous liquid containing a binder to the surface of the metal insert and allowing the coating to dry to form a hard nonyieldab1e refractory coating. The insert is then located in a mold in a manner such that it cannot be displaced during casting and a ferrous metal is cast about the refractory coated insert. The refractory coating prevents carburization of the insert and fusion of the insert with respect to the casting.
1 Claim, 4 Drawing Figures METHOD OF PRODUCING FERROUS CASTINGS WITH CAST-IN FERROUS INSERTS FIELD OF INVENTION This invention relates to the production of ferrous castings with cast-in ferrous metal inserts. In particular, this invention relates to an improved method of preventing carburization and fusion of a cast-in ferrous metal insert with respect to a ferrous casting.
PRIOR ART It has previously been proposed to cast-in a ferrous metal insert such as a steel bolt or a nodular cast iron insert or the like to prevent the necessity of forming cored openings in cast plates and the like into which bolts are subsequently fitted. It has, however, been found that as a result of casting around a bolt or the like the steel of which the bolt is made is carburized to the extent that the bolt loses its ductility and becomes brittle. For this reason, there has been only limited use of the practice of casting-in bolts or the like.
Castings have also been reinforced by means of reinforcing rod structures. The reinforcing rod structures have previously been coated in a special apparatus with a mixture of resin and sand. The reinforcing member must be preheated and thereafter placed in a special apparatus and covered with a mixture of resin and sand. The reinforcing structure must remain in the apparatus for a period of time sufficient to permit a buildup of the required thickness of the surface layer. The coating which has been applied at this stage is soft and may easily be damaged in handling. In order to harden the coating, the reinforcing member with the coating applied must again be heated to a temperature sufficient to set the coating. This is a costly and time consuming method which requires a complex apparatus. It will also be apparent that when very large reinforcing structures are to be used, the apparatus in which the coating is to be applied must also be very large. In addition, the presence ofa resin in the mixture of the coating tends to cause gases to be generated during the casting process which adversely affects the quality of the casting. Furthermore, because the coating has a substantial thickness and it includes a sand mass, it is subject to spalling" and must, therefore, be handled with care.
SUMMARY OF INVENTION The present invention overcomes the difficulties of the prior art described above and provides a simple and efficient method of producing a ferrous casting with cast-in ferrous metal inserts comprising the steps of preparing the surface of the ferrous metal insert which is to be cast-in to receive a bondable coating, applying at least one coating of a refractory coating which when set is capable of resisting carburization and fusion during casting, locating the insert in a mold in a manner such that it cannot be displaced during casting and casting a ferrous metal about the insert.
The present invention also provides an improved ferrous casting having cast-in ferrous metal inserts cornprising a body of cast ferrous material having cast-in ferrous metal inserts coated with a thin, hard, nonyieldable refractory coating capable of resisting carburization and fusion during the casting operation, said coating having an outer surface which is slidable with respect to said casting to permit relative movement of the casting with respect to the inserts.
PREFERRED EMBODIMENT The invention will be more clearly understood after reference to the following detailed specification read in conjunction with the drawings wherein FIG. 1 is a partially sectioned pictorial view illustrating a casting with a cast in ferrous metal insert in the form of a threaded bolt;
FIG. 2 is a partially sectioned pictorial view of a casting with a ferrous metal shaft cast therein;
FIG. 3 is a partially sectioned pictorial view illustrating a cast'in ferrous metal reinforcement; and
FIG. 4 is a view similar to FIG. 3 showing an alternative form of cast-in ferrous metal reinforcement.
With reference to FIG. I of the drawings, it will be seen that the bolt 10 may be conveniently positioned with respect to a casting 12 by casting around the head of the bolt. This is achieved by applying a coating of the type which will be described hereinafter to the surface of the bolt 10 and thereafter locating the bolt 10 in the mold and thereafter casting the ferrous metal about the bolt head to provide the combination of a casting and bolt as illustrated in FIG. 1. The bolt is preferably made from a strong ductile steel material while the casting may be made from steel or cast iron. One of the difficulties which has previously been experienced with respect to the location of cast-in steel inserts such as bolts has been that the bolt is carburized by reason of the fact that it comes in intimate contact with the cast metal, with the result that the bolt loses its ductility and is brittle. This is particularly undesirable in a cast-in structure because of the difficulty of replacing a bolt which has been broken or damaged in use. Carburization is a particularly serious problem due to the high carbon content of most cast irons such as white, grey and nodular cast irons.
In FIG. 2 of the drawings the insert is in the form of a shaft I4 which may be made from a nodular cast iron or steel or the like, about which a cylindrical shaped casting 16 is formed. Again, the surface of the shaft 14 is coated with the refractory coating as will be described hereinafter and located in a position within the mold such that it cannot be displaced during casting. The cylindrical casting is then formed about the shaft 14.
A feature of the inserts l0 and 14 of the embodiments illustrated in FIGS. 1 and 2 of the drawings is that they are exposed at one or more surfaces of the casting. This permits the insert to function as a component used to operably connect or unite the cast member to complementary component parts of an assembly in which the cast element is to be used.
According to a further embodiment of the present invention, the cast-in insert may be in the form of a reinforcing element such as the expanded sheet metal element 18 of FIG. 3. The expanded sheet metal element I8 is located within the body of a casting 20. Again, the expanded metal reinforcement 18 is coated with the refractory coating of the type described hereinafter prior to the formation of a casting. In the event of a cracking or failure of the material of the casting, the reinforcing element 18 serves to hold the casting together. Because of the fact that carburization is prevented, the reinforcing structure retains its inherent ductility so that it will not fracture simultaneously with the structure of the casting. Because the coating prevents fusion between the reinforcing and the casting. the reinforcement is not excessively strained by expansion or contraction of the casting.
A still further embodiment of the invention is illustrated in FIG. 4 of the drawings wherein the casting 22 is reinforced by a welded frame structure 24 which consists of a plurality of rods 26 and 28 which are secured to one another as by welding into a grid pattern. After formation of the grid pattern, the reinforcement is coated with a coating to be described hereinafter and the casting formed around the reinforcement in a mold.
It has been found that a coating composition suitable for application to a ferrous metal insert, such as steel or nodular cast iron which is to be cast-in a ferrous casting, consists of a macroscopic finely divided refractory solid particles suspended in a aqueous liquid containing a binder. A suitable composition may be a vitreous silica dispersion. Alternative compositions may include non-silicose refractories such as alumina and graphite. The binder is preferably in the form of a colloidal silica so]. The proportions of the refractory solid particles and the aqueous liquid containing the binder are preferably within the range of to 70% by weight and 30 to 90% by weight respectively. The suspension is stabilized by intimate dispersion therewith and the stabilizing amount of xanthomonas hydrophylic colloid. A coating of this type which has been found to have satisfactory resistance to carburizing is presently used to prevent fusion of cast ingots to an ingot stool. The problems associated with carburization are critical to the present invention but are not of any concern in the use of the coating in association with an ingot cast ing stool. The only problem encountered in this application is one of fusion.
A coating suitable for use in the present invention is known by the registered trade mark NALCOTE 4l20 and is manufactured by Alchem Limited of Burlington, Ontario. It has been found that a coating thickness of the order of about 0.005 inches provides adequate protection in most casting, however, the thickness can be increased if necessary by the application of additional coats to 0.015 inches or more as required.
According to the method of the present invention, the ferrous metal insert or reinforcement is shaped or formed if necessary to the required configuration. This may require bending and/or welding of the steel components as previously described. When the structure is welded, it is sometimes desirable to stressrelieve the structure to relieve the stresses caused by welding. The steel insert is cleaned to remove all dirt, rust, mill scale, grease, oil or the like so that the surface of the insert is bondable with the coating which is subsequently applied. lf the surface of the insert is smooth and polished, it is desirable to shot blast the surface to provide a surface finish which is conducive to good adhesion with the coating. While it is not essential to the formation of the layer of the coating, the insert may be preheated prior to the application of the coating to approximately l50F. in order to hasten the drying of the coating. The insert is then coated with Le coming composition previously described. The coating may be applied with a brush, by spray ng or by dipping or the like. It has been found that a single coating of the composition previously described is generally sufficient. However, additional coatings may be applied if desired. The coating is then allowed to dry. Drying of the coating may be assisted by blowing warm air or by the application of heat lamps or the like. If this post-dry mg operation is carried out, the preheating step previoiusly described may be eliminated. When the coating has dried, it forms a thin, hard, non-yieldable refractory coating on the surface of the steel insert. The steel insert is then previously in a mold in such a manner that it will not move during the casting operation except as a result of minor warpage which may occur during casting. The molten ferrous metal which may be in the form of white, grey or nodular cast iron, or any combination thereof, or cast steel, is then cast into the mold in such a manner that the ferrous metal insert is embedded in the casting.
From the foregoing it will be apparent that the present invention provides a simple and efficient method of forming a ferrous casting with a cast-in ferrous metal insert. This method permits the coating to be applied without difficulty and is not restricted by the dimensional characteristics of the apparatus in which coating is carried out. These and other modifications will be apparent to those skilled in the art without departing from the scope of the invention.
What I claim as my invention is:
l. A method of producing ferrous castings with castin ferrous metal inserts comprising the steps of a. preparing the surface of the ferrous metal insert which is to be cast-in to receive a bondhle coating,
b. applying at least one coat of a coating composition consisting of finely divided macroscopic vitreous silica dispersed in an aqueous silica sol containing a binder to the surface of the ferrous metal insert and allowing the coating to dry to form a hard nonyieldable refractory coating which prevents carburization and fusion during the casting step,
c. locating the coated insert in a mold in a manner such that it cannot be displaced during casting,
d. casting a ferrous metal about said refractory coated insert, said refractory coating preventing carburization of the insert and fusion of the insert with respect to the casting.

Claims (1)

1. A METHOD OF PRODUCING FERROUS CASTINGS WITH CAST-IN FERROUS METAL INSERTS COMPRISING THE STEPS OF A. PREPARING THE SURFACE OF THE FERROUS METAL INSERT WHICH IS TO BE CAST-IN TO RECEIVE A BONDABLE COATING, B. APPLYING AT LEAST ONE COAT OF A COATING COMPOSITION CONSISTING OF FINELY DIVIDED MACROSCOPIC VITREOUS SILICA DISPERSED IN AN AQUEOUS SILICA SOL CONTAINING A BINDER TO THE SURFACE OF THE FERROUS METAL INSERT AND ALLOWING THE COATING TO DRY TO FORM A HARD NONYIELDABLE REFRACTORY COATING WHICH PREVENTS CARBURIZATION AND FUSION DURING THE CASTING STEP, C. LOCATING THE COATED INSERT IN A MOLD IN A MANNER SUCH THAT IT CANNOT BE DISPLACED DURING CASTING, D. CASTING A FERROUS METAL ABOUT SAID REFRACTORY COATED INSERT, SAID REFRACTORY COATING PREVENTING CARBURIZATION OF THE INSERT AND FUSION OF THE INSERT WITH RESPECT TO THE CASTING.
US412177A 1973-11-02 1973-11-02 Method of producing ferrous castings with cast-in ferrous inserts Expired - Lifetime US3888297A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US412177A US3888297A (en) 1973-11-02 1973-11-02 Method of producing ferrous castings with cast-in ferrous inserts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US412177A US3888297A (en) 1973-11-02 1973-11-02 Method of producing ferrous castings with cast-in ferrous inserts

Publications (1)

Publication Number Publication Date
US3888297A true US3888297A (en) 1975-06-10

Family

ID=23631913

Family Applications (1)

Application Number Title Priority Date Filing Date
US412177A Expired - Lifetime US3888297A (en) 1973-11-02 1973-11-02 Method of producing ferrous castings with cast-in ferrous inserts

Country Status (1)

Country Link
US (1) US3888297A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2714906A1 (en) * 1977-04-02 1978-10-05 Wahl Verschleiss Tech Chilled white iron castings - contg. thin steel bars which increase resistance to tensile and bending stresses
US4620507A (en) * 1981-03-06 1986-11-04 Hiromichi Saito Stave cooler
US4764255A (en) * 1987-03-13 1988-08-16 Sandvik Ab Cemented carbide tool
US5437623A (en) * 1993-08-02 1995-08-01 E. R. Squibb & Sons, Inc. Wound dressing securement system
US5509459A (en) * 1994-09-28 1996-04-23 The United States Of America As Represented By The Secretary Of The Navy Pressure cast alumina tile reinforced aluminum alloy armor and process for producing the same
US5921333A (en) * 1997-08-06 1999-07-13 Naco, Inc. Casting having in-situ cast inserts and method of manufacturing
US20050133102A1 (en) * 2003-12-22 2005-06-23 Blackman Donald E. Hydraulic end head with internally cast hydraulic circuits
US20050133187A1 (en) * 2003-12-17 2005-06-23 Sean Seaver Die casting method system and die cast product

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9350A (en) * 1852-10-19 Improved burglar-proof plates for doors, safe-walls
US1025817A (en) * 1911-04-26 1912-05-07 Luckenbach Inv S Dev Company Method of making structures for superheating and other purposes.
US1172363A (en) * 1915-06-25 1916-02-22 American Brake Shoe & Foundry Mold for brake-shoes.
US2690004A (en) * 1949-09-14 1954-09-28 Edward Valves Inc Method of manufacturing joints
US2872715A (en) * 1954-10-22 1959-02-10 Morris Bean And Company Method of casting metal around sheet metal inserts
US3045301A (en) * 1958-12-29 1962-07-24 Gen Motors Corp Coated metallic insert in mold
US3184815A (en) * 1963-11-07 1965-05-25 Nalco Chemical Co Metal casting process
US3396935A (en) * 1965-08-27 1968-08-13 Nalco Chemical Co Metal ingot mold with protective coating
US3428464A (en) * 1965-02-02 1969-02-18 Alchem Ltd Refractory coating compositions
US3461944A (en) * 1965-09-28 1969-08-19 Ti Line Corp Method of manufacturing a lined iron-base article
US3468813A (en) * 1965-09-13 1969-09-23 Nalco Chemical Co Method of producing acid silica sols
US3509936A (en) * 1964-02-28 1970-05-05 Nalco Chemical Co Coated articles and method of reducing the erosion of ingot mold stools
US3568723A (en) * 1967-06-23 1971-03-09 Du Pont Metal-ceramic composite structures
US3822736A (en) * 1970-09-30 1974-07-09 N Alexandrov Method for manufacturing cooling members for cooling systems of metallurgical furnaces

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9350A (en) * 1852-10-19 Improved burglar-proof plates for doors, safe-walls
US1025817A (en) * 1911-04-26 1912-05-07 Luckenbach Inv S Dev Company Method of making structures for superheating and other purposes.
US1172363A (en) * 1915-06-25 1916-02-22 American Brake Shoe & Foundry Mold for brake-shoes.
US2690004A (en) * 1949-09-14 1954-09-28 Edward Valves Inc Method of manufacturing joints
US2872715A (en) * 1954-10-22 1959-02-10 Morris Bean And Company Method of casting metal around sheet metal inserts
US3045301A (en) * 1958-12-29 1962-07-24 Gen Motors Corp Coated metallic insert in mold
US3184815A (en) * 1963-11-07 1965-05-25 Nalco Chemical Co Metal casting process
US3509936A (en) * 1964-02-28 1970-05-05 Nalco Chemical Co Coated articles and method of reducing the erosion of ingot mold stools
US3428464A (en) * 1965-02-02 1969-02-18 Alchem Ltd Refractory coating compositions
US3396935A (en) * 1965-08-27 1968-08-13 Nalco Chemical Co Metal ingot mold with protective coating
US3468813A (en) * 1965-09-13 1969-09-23 Nalco Chemical Co Method of producing acid silica sols
US3461944A (en) * 1965-09-28 1969-08-19 Ti Line Corp Method of manufacturing a lined iron-base article
US3568723A (en) * 1967-06-23 1971-03-09 Du Pont Metal-ceramic composite structures
US3822736A (en) * 1970-09-30 1974-07-09 N Alexandrov Method for manufacturing cooling members for cooling systems of metallurgical furnaces

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2714906A1 (en) * 1977-04-02 1978-10-05 Wahl Verschleiss Tech Chilled white iron castings - contg. thin steel bars which increase resistance to tensile and bending stresses
US4620507A (en) * 1981-03-06 1986-11-04 Hiromichi Saito Stave cooler
US4764255A (en) * 1987-03-13 1988-08-16 Sandvik Ab Cemented carbide tool
US5437623A (en) * 1993-08-02 1995-08-01 E. R. Squibb & Sons, Inc. Wound dressing securement system
US5509459A (en) * 1994-09-28 1996-04-23 The United States Of America As Represented By The Secretary Of The Navy Pressure cast alumina tile reinforced aluminum alloy armor and process for producing the same
US5921333A (en) * 1997-08-06 1999-07-13 Naco, Inc. Casting having in-situ cast inserts and method of manufacturing
US20050133187A1 (en) * 2003-12-17 2005-06-23 Sean Seaver Die casting method system and die cast product
US20050133102A1 (en) * 2003-12-22 2005-06-23 Blackman Donald E. Hydraulic end head with internally cast hydraulic circuits
US20080092382A1 (en) * 2003-12-22 2008-04-24 Blackman Donald E Hydraulic end head with internally cast hydraulic circuits

Similar Documents

Publication Publication Date Title
JP3557430B2 (en) Metal casting mold, metal casting method, and molded article of refractory composition used therefor
JP3253605B2 (en) Cast-in cast iron member, cast-in product using the same, and method of manufacturing cast-in cast iron member
US3888297A (en) Method of producing ferrous castings with cast-in ferrous inserts
US3835913A (en) Investment casting
BRPI0519332B1 (en) GUM COMPOSITION, FOUNDRY MOLD, FOUNDRY PROCESSES, METHOD FOR PRODUCTION OF THIS MOLD AND USE OF THIS
EP0115402B1 (en) Ceramic shell moulds, manufacture and use
US3498360A (en) Method of casting in a mold which is coated during casting
EP0020373B1 (en) Method of making and using a ceramic shell mold
US3230056A (en) Casting steel ingots
ES467909A1 (en) Method and apparatus for centrifugal casting
US3414044A (en) Method of making bimetallic tubular article
JPH0741370B2 (en) Graphite mold
US4223716A (en) Method of making and using a ceramic shell mold
US3963450A (en) Reinforced cast product and method of making
US3196504A (en) Cast nozzle inserts
US8136571B2 (en) Carbidic outer edge ductile iron product, and as cast surface alloying process
US3470937A (en) Process of protecting castings made of carbon-containing alloys against decarburization at the edges and against surface defects
US3157926A (en) Making fine grained castings
US3654987A (en) Gasifiable casting care
US2645558A (en) Lining for centrifugal iron casting molds
US2048309A (en) Cast iron and method of making the same
US5547521A (en) Heat treatment method for lost foam cast materials
US4188416A (en) Sprayable material for repairing base plates of ingot molds
JPS6229137B2 (en)
US1819942A (en) Method of casting continuous polygonal bands

Legal Events

Date Code Title Description
AS Assignment

Owner name: NORCAST INC., 68 YONGE ST., SUITE 208, TORONTO, ON

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CANRON INC.;REEL/FRAME:004148/0858

Effective date: 19830615