US3030205A - Nickel-magnesium addition alloy - Google Patents
Nickel-magnesium addition alloy Download PDFInfo
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- 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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- magnesium
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- iron
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- 229910045601 alloy Inorganic materials 0.000 title description 41
- 239000000956 alloy Substances 0.000 title description 41
- ATTFYOXEMHAYAX-UHFFFAOYSA-N magnesium nickel Chemical compound [Mg].[Ni] ATTFYOXEMHAYAX-UHFFFAOYSA-N 0.000 title description 5
- 239000011777 magnesium Substances 0.000 claims description 50
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 49
- 229910052749 magnesium Inorganic materials 0.000 claims description 49
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 44
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 30
- 229910001018 Cast iron Inorganic materials 0.000 claims description 23
- 229910052742 iron Inorganic materials 0.000 claims description 22
- 229910052759 nickel Inorganic materials 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 238000011084 recovery Methods 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 6
- 239000011575 calcium Substances 0.000 claims description 6
- 229910052791 calcium Inorganic materials 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 230000006872 improvement Effects 0.000 claims description 4
- 238000007792 addition Methods 0.000 description 15
- 238000007259 addition reaction Methods 0.000 description 7
- 239000000155 melt Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 229910000861 Mg alloy Inorganic materials 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 229910052761 rare earth metal Inorganic materials 0.000 description 5
- 150000002910 rare earth metals Chemical class 0.000 description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 230000002079 cooperative effect Effects 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 235000000396 iron Nutrition 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- 229910001122 Mischmetal Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 229910052716 thallium Inorganic materials 0.000 description 1
- BKVIYDNLLOSFOA-UHFFFAOYSA-N thallium Chemical compound [Tl] BKVIYDNLLOSFOA-UHFFFAOYSA-N 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Images
Classifications
-
- 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)
Description
A ril 17, 1962 K. D. MILLIS 3,030,205
NICKEL-MAGNESIUM ADDITION ALLOY Filed July 20, 1959 O-O7% RETAINED Mg I \JQRETAINED Mg IO 20 3O 4O 5O MAGNESIUM CONTENT IN ALLOY ADDITION REQUIRED TO PRODUCE PREDETERMINED Mg CONTENT 5 KEITH DWIGHT MILLIS INVENTOR.
BY QL. ja M ATTORNEY United States Patent 9 3,030,205 NICKEL-MAGNESIUM ADDITION ALLOY Keith D. Millis, Scotch Plains, N.J., assignor to The International Nickel Company, Inc., New York, N.Y., a
corporation of Delaware Filed July 20, 1959, Ser. No. 828,311 3 Claims. (Cl. 75-130) 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.
The problem of introducing magnesium into molten cast iron is complicated by the fact that magnesium boils at a temperature below that at which cast iron melts. Many means have been proposed to cope with this problem, including the use of a variety of magnesium alloys, the use of special pressure apparatus to contain the magnesium vapor generated by contact of magnesium with molten cast iron, etc. All of the prior proposals have been characterized by drawbacks such as undesirable violence of addition reactions, expensive and complicated equipment, etc.
An improved method has now been discovered wherein magnesium may readily be introduced into molten cast iron with improved economy, with the use of very simple apparatus and without encountering excessive or explosive addition reactions.
It is an object of the present invention to provide a process for treating cast iron melts to improve the recovery of magnesium in castings produced from such melts.
Another object of the invention is to provide a special magnesium alloy which provides improved recovery of contained magnesium in molten iron treated therewith.
It is a further object of the invention to provide an improved method for introducing magnesium into molten iron which, in cooperation with the special magnesiumcontaining alloy contemplated in accordance with the in vention, provides special and improved results by way of economy and low reactivity.
Other objects and advantages of the invention will become apparent from the following description taken in conjunction with the accompanying drawing which depicts graphically special cooperative effects obtained in carrying out the process embodying the present invention.
Generally speaking, 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.
Advantageously, 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. It is desirable that 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.
The apparatus employed for the purpose of immersing the special nickel-magnesium alloy below the molten iron It comprises a: container which may take the form of a cup, can or surface is very simple and inexpensive.
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. In using the apparatus, 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;
a paper bag and wired or otherwise fastened into the cup or can. The cup or can is then thrust beneath the surface of the melt by means of the attached handle and held in place until subsidence of the addition reaction. Use of a bag made of paper or the like is especially convenient since weighed portions of alloy calculated to be suflicient for treating the weight of molten metal contemplated may be prepared beforehand and inserted into the addition device as required.
It is important that a relatively deep ladle or other: receptacle be employed for the purpose of holding the' molten cast iron melt to be treated in accordance with the invention. It is also important that the addition alloy be thrust Well beneath the melt surface and held in that position until subsidence of the addition reaction. In'
an inch of the bottom of the metal column. In this manner, 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. By
reference to the drawing, it will be seen that 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. The relationship illustrated by the shape of the curve in the accompanying drawing depicts generally cooperative eflects obtained in carrying out the process embodying the present invention although it will be appreciated that the amount of addition agent required will be affected in a particular case by the amount of sulfur in the bath, the temperature of themolten iron, etc. I
Satisfactory alloys for the purpose of carrying out the present invention include the following:
Percent Percent Percent Percent Percent Percent; N 0. Mg Ni Ca Si Ce The foregoing alloys are satisfactory for the treatment of ordinary base gray cast irons and will provide satisfactory results in the usual case with additions of about 0.75% to about 1.25%, e.g., about 1%, by weight of the molten iron. These small additions insure high nickel economy in the use of the alloy. In special cases, such as the case (for example, in a pipe foundry) in which the temperature of the molten metal to be treated may be about 2450 F. (rather than the usual case in which the molten metal temperature is about 2700 to 2750 F.) or the case in which 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.
For the purpose of giving those skilled in the art a better appreciation of the advantages of the invention, the following illustrative example is given:
An addition of 0.8% by weight of an alloy containing 27.8% magnesium with the balance essentially nickel was plunged by means of an inverted refractory-covered cup into a ladle containing 1000 pounds of molten iron which had a sulfur content of about 0.035% and a nickel content of about /2%. The column of molten iron had a ratio of height to diameter of about 1.221 and the inverted cup was plunged through the molten iron to a distance of about 1% inches from the ladle bottom. Magnesium was retained in the iron in the amount of 0.059% and the final nickel content was 1.02%. The thus-treated iron was then inoculated with about 0.75% of ferrosilicon and cast into castings which had contained graphite in a spheroidal form.
These figures show a distinct advantage over an alloy containing about magnesium, with the balance essentially nickel. In the same operation, 0.95% of the 15% magnesium alloy was required for a retention of 0.057% magnesium and the residual nickel was 1.35%.
Although the present invention has been described in conjunction with preferred embodiments, it is to be understood that modifications and variations may be resorted to without departing from the spirit and scope of the invention, as those skilled in the art will readily understand. Such modifications and variations are considered to be Within the purview and scope of the invention and appended claims.
I claim:
1. In the method for introducing magnesium into molten cast iron, 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.
2. In the method for introducing magnesium into molten cast iron, 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.
3. In the method for introducing magnesium into molten cast iron, 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.
Millis et al. Oct. 25, 1949 Millis et al. Oct. 25, 1949
Claims (1)
1. IN THE METHOD FOR INTRODUCING MAGNESIUM INTO MOLTENJ CAST IRON, THE IMPROVEMENT WHICH COMPRISES ESTABLISHING A COLUMN OF MOLTEN CAST IRON HAVING A HEIGHT AT LEAST SUBSTANTIALLY EXCEEDING THE THICKNESS THEREOF AND PLUNGING SUBSTANIALLY TO THE BOTTOM OF SAID COLUMN AN ADDITION AGENT CONTAING ABOUT 2K% TO 35% MGNESIUM, UP TO ABOUT 2% CARBON, UP TO ABOUT 30% SILICON, UP TO ABOUT 2% OF A RATE EARTH METAL, UP TO ABOUAT 5% CALCIUM AND THE BALANCE ESSENTIALLY NICKEL, AND HOLDING SAID AGENT SUBSTANIALLY 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 OB-
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US828311A US3030205A (en) | 1959-07-20 | 1959-07-20 | Nickel-magnesium addition alloy |
ES0259756A ES259756A1 (en) | 1959-07-20 | 1960-07-19 | Nickel-magnesium addition alloy |
DE19601408869 DE1408869A1 (en) | 1959-07-20 | 1960-07-19 | Process for the manufacture of cast iron containing magnesium |
BE593167A BE593167A (en) | 1959-07-20 | 1960-07-19 | Nickel-magnesium alloys and treatment of cast iron with alloys |
CH822060A CH413389A (en) | 1959-07-20 | 1960-07-19 | Alloy which can be used to introduce magnesium into the molten iron |
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 |
Family
ID=25251429
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 (en) |
BE (1) | BE593167A (en) |
CH (1) | CH413389A (en) |
DE (1) | DE1408869A1 (en) |
ES (1) | ES259756A1 (en) |
Cited By (7)
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 (en) * | 2022-04-06 | 2022-09-02 | 吉林大学 | Weak segregation high-corrosion-resistance magnesium alloy and preparation method thereof |
Citations (2)
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 |
-
1959
- 1959-07-20 US US828311A patent/US3030205A/en not_active Expired - Lifetime
-
1960
- 1960-07-19 CH CH822060A patent/CH413389A/en unknown
- 1960-07-19 BE BE593167A patent/BE593167A/en unknown
- 1960-07-19 DE DE19601408869 patent/DE1408869A1/en active Pending
- 1960-07-19 ES ES0259756A patent/ES259756A1/en not_active Expired
Patent Citations (2)
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)
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 (en) * | 2022-04-06 | 2022-09-02 | 吉林大学 | Weak segregation high-corrosion-resistance magnesium alloy and preparation method thereof |
Also Published As
Publication number | Publication date |
---|---|
CH413389A (en) | 1966-05-15 |
BE593167A (en) | 1961-01-19 |
DE1408869A1 (en) | 1968-10-24 |
ES259756A1 (en) | 1961-02-01 |
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