US3030205A - Nickel-magnesium addition alloy - Google Patents

Nickel-magnesium addition alloy Download PDF

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Publication number
US3030205A
US3030205A US828311A US82831159A US3030205A US 3030205 A US3030205 A US 3030205A US 828311 A US828311 A US 828311A US 82831159 A US82831159 A US 82831159A US 3030205 A US3030205 A US 3030205A
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US
United States
Prior art keywords
magnesium
alloy
molten
nickel
iron
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
US828311A
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English (en)
Inventor
Keith D Millis
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.)
Huntington Alloys Corp
Original Assignee
International Nickel Co 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 International Nickel Co Inc filed Critical International Nickel Co Inc
Priority to US828311A priority Critical patent/US3030205A/en
Priority to BE593167A priority patent/BE593167A/fr
Priority to ES0259756A priority patent/ES259756A1/es
Priority to CH822060A priority patent/CH413389A/fr
Priority to DE19601408869 priority patent/DE1408869A1/de
Application granted granted Critical
Publication of US3030205A publication Critical patent/US3030205A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/10—Making spheroidal graphite cast-iron
    • C21C1/105—Nodularising additive agents
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/10—Making spheroidal graphite cast-iron
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C19/00—Alloys based on nickel or cobalt
    • C22C19/007—Alloys based on nickel or cobalt with a light metal (alkali metal Li, Na, K, Rb, Cs; earth alkali metal Be, Mg, Ca, Sr, Ba, Al Ga, Ge, Ti) or B, Si, Zr, Hf, Sc, Y, lanthanides, actinides, as the next major constituent

Definitions

  • the present invention relates to an improved method for introducing magnesium into cast iron and, more particularly, to a method for producing magnesium-containing cast iron characterized by improved economy and a high recovery of magnesium into molten iron.
  • Another object of the invention is to provide a special magnesium alloy which provides improved recovery of contained magnesium in molten iron treated therewith.
  • the method embodying the present invention comprises treating a bath of molten cast iron by immersing below the surface thereof a nickel-base alloy containing about 25% to about 32% magnesium, up to about 2% carbon, up to about 5% calcium, up to about 30% silicon, up to about 2% of a rare earth metal, and the balance essentially nickel, holding said alloy be low the surface of said bath until it is substantially melted and dissolved therein, and thereafter casting metal from said bath to obtain magnesium-containing cast iron.
  • the alloy contains about 1% to about 2% carbon, as the carbon assists in preparing the alloy and reduces the melting point thereof, thereby assisting in control of the addition reaction.
  • Calcium present in the alloy also assists in control of the addition reaction.
  • the magnesium content of the alloy not exceed substantially 35% and that the minimum content of magnesium in the alloy be at least about 25% in order to obtain optimum results by way of high magnesium recovery in the melt, low reactivity of the alloy in contact with molten cast iron, and high economy in the use of nickel.
  • the alloy may also contain silicon in amounts up to about 30% in place of nickel. The nickel content must in all cases be at least about 40% of the alloy.
  • the alloy may advantageously contain a rare earth metal such as cerium or mischmetal in amounts up to about 2% of the alloy, as these elements aid in overcoming the deleterious effects of elements such as titanium, lead, copper, indium, thallium, tin, bismuth and antimony upon the function of magnesium in controlling the occurrence of spheroidal graphite in cast iron.
  • a rare earth metal such as cerium or mischmetal in amounts up to about 2% of the alloy, as these elements aid in overcoming the deleterious effects of elements such as titanium, lead, copper, indium, thallium, tin, bismuth and antimony upon the function of magnesium in controlling the occurrence of spheroidal graphite in cast iron.
  • the apparatus employed for the purpose of immersing the special nickel-magnesium alloy below the molten iron comprises a: container which may take the form of a cup, can or surface is very simple and inexpensive.
  • the basket which may be made, for example, of sheet metal, graphite, metal-reinforced refractory material, etc. and which may be attached to a rod or pole for immersion into the molten cast iron. Suitable holes maybe provided in the walls of the cup or can and the end thereof which becomes the bottom end upon immersion into the molten iron may advantageously be left open.
  • the nickel-magnesium alloy which may be in the form of small lumps averaging about 5 inch to about 4 inches in diameter, is fitted into the cup or can from the open end. The lumps of alloy may be placed in;
  • the alloy melts from the heat of the molten iron and the magnesium contained therein is vaporized.
  • the re-' sulting magnesium vapors are caused to bubble up through the column of molten metal, with the result that the maximum absorption of magnesium in the iron is effected.
  • the accompanying drawing illustrates the cooperative effects obtained in carrying out the process embodying the present invention.
  • the drawing is based upon the results of a number of tests in accordance with the invention involving the treatment of molten iron at a temperature of about 2700 F., said base iron having a low sulfur content of about 0.03% and wherein the addition alloy was thrust beneath the surface of the molten cast iron to a depth of about 1 inch from the ladle bottom in each case.
  • the process embodying the present invention makes it possible to employ lower and substantially constant quantities of a special magnesium-containing agent to produce a predetermined magnesium content in cast irons, particularly when the magnesium content in the alloy falls within the range of about 25% to about 32%. It is to be seen from the drawing that when the magnesium content of the agent is either above or below the aforementioned range that greater quantities of addition alloy are required to obtain the predetermined magnesium content in the final Advan-' cast iron. In addition, when the magnesium content of the alloy substantially exceeds about 35%, the addition reaction becomes undesirably violent.
  • Satisfactory alloys for the purpose of carrying out the present invention include the following:
  • the molten metal temperature is about 2700 to 2750 F.
  • the sulfur content of the molten iron to be treated is very low, e.g., not exceeding about 0.01%
  • additions of the alloy on the order of about 0.25% or about 0.30% by weight of the molten iron may be employed. In such cases, even greater economy is achieved through the use of the present invention.
  • the improvement which comprises establishing a column of molten cast iron having a height at least substantially exceeding the thickness thereof and plunging substantially to the bottom of said column an addition agent containing about 25% to 35% magnesium, up to about 2% carbon, up to about 30% silicon, up to about 2% of a rare earth metal, up to about 5% calcium and the balance essentially nickel, and holding said agent substantially in position in said column until said agent is substantially melted, whereby an improved recovery in the molten iron of magnesium contained in said agent is obtained as compared to the magnesium recovery obtained from agents containing either greater or lesser amounts of magnesium.
  • the improvement which comprises establishing a column of molten cast iron having a height at least one and one-half times greater than the diameter thereof, plunging substantially to the bottom of said column an addition alloy containing about 25 to 32% magnesium, up to about 2% carbon, up to about 30% silicon, up to about 2% of a rare earth metal, up to about 5% calcium and the balance essentially nickel, and holding said alloy substantially in position in said column until said alloy is I substantially melted, whereby an improved recovery in the molten iron of magnesium contained in said alloy is obtained as compared to the magnesium recovery obtained from alloys containing either greater or lesser amounts of magnesium.
  • the improvement which comprises establishing a column of molten cast iron having a height at least twice as great as the diameter thereof, plunging substantially to the bottom of said column an addition alloy containing about 25% to 32% magnesium, up to about 2% carbon, up to about 30% silicon, up to about 2% of a rare earth metal, up to about 5% calcium and the balance essentially nickel, and holding said alloy substantially in position in said column until said alloy is substantially melted, whereby an improved recovery in the molten iron of magnesium contained in said alloy is obtained as compared to the magnesium recovery obtained from alloys containing either greater or lesser amounts of magnesium.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
US828311A 1959-07-20 1959-07-20 Nickel-magnesium addition alloy Expired - Lifetime US3030205A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US828311A US3030205A (en) 1959-07-20 1959-07-20 Nickel-magnesium addition alloy
BE593167A BE593167A (fr) 1959-07-20 1960-07-19 Alliages de nickel-magnésium et traitement de la fonte avec des alliages
ES0259756A ES259756A1 (es) 1959-07-20 1960-07-19 Un metodo para introducir magnesio en hierro fundido
CH822060A CH413389A (fr) 1959-07-20 1960-07-19 Alliage utilisable pour introduire du magnésium dans la fonte de fer en fusion
DE19601408869 DE1408869A1 (de) 1959-07-20 1960-07-19 Verfahren zum Herstellen von Magnesium enthaltendem Gusseisen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US828311A US3030205A (en) 1959-07-20 1959-07-20 Nickel-magnesium addition alloy

Publications (1)

Publication Number Publication Date
US3030205A true US3030205A (en) 1962-04-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
US828311A Expired - Lifetime US3030205A (en) 1959-07-20 1959-07-20 Nickel-magnesium addition alloy

Country Status (5)

Country Link
US (1) US3030205A (de)
BE (1) BE593167A (de)
CH (1) CH413389A (de)
DE (1) DE1408869A1 (de)
ES (1) ES259756A1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3306737A (en) * 1962-09-20 1967-02-28 Metallagesellschaft Ag Magnesium and rare earth metal containing prealloy for the treatment of iron and steel melts
US3314787A (en) * 1966-03-29 1967-04-18 Int Nickel Co Method for producing an mg addition agent
US3328164A (en) * 1962-09-20 1967-06-27 Metallgesellschaft Ag Prealloy for the treatment of iron and steel melts
US3336118A (en) * 1964-11-09 1967-08-15 Alloy Metal Products Inc Magnesium alloy for cast iron
US4052203A (en) * 1975-09-11 1977-10-04 The International Nickel Company, Inc. Crushable low reactivity nickel-base magnesium additive
US4245691A (en) * 1977-12-02 1981-01-20 Ford Motor Company In situ furnace metal desulfurization/nodularization by high purity magnesium
CN114990399A (zh) * 2022-04-06 2022-09-02 吉林大学 一种弱偏析高耐蚀镁合金及其制备方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2485760A (en) * 1947-03-22 1949-10-25 Int Nickel Co Cast ferrous alloy
US2485761A (en) * 1947-03-22 1949-10-25 Int Nickel Co Gray cast iron having improved properties

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2485760A (en) * 1947-03-22 1949-10-25 Int Nickel Co Cast ferrous alloy
US2485761A (en) * 1947-03-22 1949-10-25 Int Nickel Co Gray cast iron having improved properties

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3306737A (en) * 1962-09-20 1967-02-28 Metallagesellschaft Ag Magnesium and rare earth metal containing prealloy for the treatment of iron and steel melts
US3328164A (en) * 1962-09-20 1967-06-27 Metallgesellschaft Ag Prealloy for the treatment of iron and steel melts
US3336118A (en) * 1964-11-09 1967-08-15 Alloy Metal Products Inc Magnesium alloy for cast iron
US3314787A (en) * 1966-03-29 1967-04-18 Int Nickel Co Method for producing an mg addition agent
US4052203A (en) * 1975-09-11 1977-10-04 The International Nickel Company, Inc. Crushable low reactivity nickel-base magnesium additive
US4111691A (en) * 1975-09-11 1978-09-05 The International Nickel Company, Inc. Crushable low reactivity nickel-base magnesium additive
US4245691A (en) * 1977-12-02 1981-01-20 Ford Motor Company In situ furnace metal desulfurization/nodularization by high purity magnesium
CN114990399A (zh) * 2022-04-06 2022-09-02 吉林大学 一种弱偏析高耐蚀镁合金及其制备方法

Also Published As

Publication number Publication date
DE1408869A1 (de) 1968-10-24
BE593167A (fr) 1961-01-19
CH413389A (fr) 1966-05-15
ES259756A1 (es) 1961-02-01

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