US1762109A - Cast-iron alloy - Google Patents
Cast-iron alloy Download PDFInfo
- Publication number
- US1762109A US1762109A US185649A US18564927A US1762109A US 1762109 A US1762109 A US 1762109A US 185649 A US185649 A US 185649A US 18564927 A US18564927 A US 18564927A US 1762109 A US1762109 A US 1762109A
- Authority
- US
- United States
- Prior art keywords
- alloy
- cast
- cast iron
- iron alloy
- silicon
- 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
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
Definitions
- the invention relates to cast iron alloys
- loy which may be easily hardened to a variable degree, and to which a very high degree of hardness may be given, and which may be more readily machined than ordinary cast iron.
- ordinary cast iron containing the usual amounts of carbon and silicon has certain amounts of nickel and molybdenum added to it, and contains no other purposely added alloying constituent.
- the amounts of carbon and silicon present in ordinary cast iron, as here contemplated, are from about 1.0 to 4.0% carbon, and from about .5 to 2.5% silicon. To this there are added nickel from about 1.0 to about 4.0%, and molybdenum not more than about 1.0%.
- the alloy will of course contain other constituents present as impurities and as incidental to its manufacture from commercial scrap and other materials
- small amounts of sulphur, phosphorus and manganese may be present as impurities from the pig metal used in a cupola melt
- larger amounts of chromium, vanadium, copper, etc. may be present as constituents found in commercial scrap used also in a cupola melt.
- nickel and about 25% mol bdenum are preferred.
- the content of carbon is preferably about 1.5% and that of silicon preferably about 1.5%.”
- suc articles is tappets for operating the valves of internal combustion engines.
- the alloy is also particularly suitable for the manufacture of cylinder blocks and pistons for internal combustion en ines in that it is very resistant to wear, asbut little tendency to grow, and is readily machinable.
- a cast iron alloy consisting of about 1.5% nickel, about 25% molybdenum silicon from about .70 to about 2.5%, an car bon from about 1.5 to about 4.0%, the remainder of the alloy being iron except for constituents present as impurities and as incidental to the manufacture of the alloy.
- a cast iron alloy consisting of from about 1.0 to about 4.0% nickel, a substantial and eflective amount of molybdenum up to about 1.0%, silicon from about .80 to about 2.5%, and carbon from about 1.5 to about 4.0%, the remainder of the alloy being iron except for constituents present as impurities and as incidental to the manufacture of the alloy.
- a cast iron alloy consisting of about 1.5% nickel, about 25% molybdenum, about 1.5% silicon, and from about 1.5 to 4.0% carbon, the remainder of the alloy being iron except for constituents present as impurities and as incidental to the manufacture of the alloy.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Description
CLIFTON TAYLOR, OF PITTSBURGH, PENNSYLVANIA,
ASSIGNORS TO MOLYBDENUM CORPORATION OF AMERICA, OF PITTS- A CORPORATION OF PENNSYLVANIA Patented June 3, 1930 UNITED STATES PATENT OFFICE TOLEDO, OHIO, BURGH, PENNSYLVANIA,
AND HERMAN L. GREENE, 0E
CAST-IRON ALLOY No Drawing.
The invention relates to cast iron alloys,
loy which may be easily hardened to a variable degree, and to which a very high degree of hardness may be given, and which may be more readily machined than ordinary cast iron.
In the practice of this invention ordinary cast iron, containing the usual amounts of carbon and silicon has certain amounts of nickel and molybdenum added to it, and contains no other purposely added alloying constituent. The amounts of carbon and silicon present in ordinary cast iron, as here contemplated, are from about 1.0 to 4.0% carbon, and from about .5 to 2.5% silicon. To this there are added nickel from about 1.0 to about 4.0%, and molybdenum not more than about 1.0%. The alloy will of course contain other constituents present as impurities and as incidental to its manufacture from commercial scrap and other materials For example, small amounts of sulphur, phosphorus and manganese may be present as impurities from the pig metal used in a cupola melt, and larger amounts of chromium, vanadium, copper, etc., may be present as constituents found in commercial scrap used also in a cupola melt.
Within the stated ranges of the purposely added alloying constituents, it is preferred to use about 1.5% nickel and about 25% mol bdenum. The content of carbon is preferably about 1.5% and that of silicon preferably about 1.5%."
We have found that! when articles made from the alloy provided according to this invention are cast in permanent or other chill molds, they have a very hi h hardness, ranging from about 700 to 800 l3rinell, and that when cast in sand or other non-chill molds, the have a hardness of about 200 Brinell. lthough the latter is about 50 points higher than ordinary cast iron, we have nevertheless found that the alloy has a dense close grain and that it is more readily machinable than ordinary cast iron.
Having these physical characteristics, the
Application filed April 21,
1927. Serial No. 185,649.
ifs desired to provide with hardened suraces, sired to have relatively soft for machining and other purposes. An example of suc articles is tappets for operating the valves of internal combustion engines. The alloy is also particularly suitable for the manufacture of cylinder blocks and pistons for internal combustion en ines in that it is very resistant to wear, asbut little tendency to grow, and is readily machinable.
According to the patent statutes we have explained the principle of our invention and have described what we now consider to represent its best embodiment.- However, we desire to have it understood that, within the and other portions of which it is de-h scope of the appended claims, the invention may be embodied in cast iron alloys other than that specifically described. e
We claim as our invention:
1. A cast iron alloy consisting of about 1.5% nickel, about 25% molybdenum silicon from about .70 to about 2.5%, an car bon from about 1.5 to about 4.0%, the remainder of the alloy being iron except for constituents present as impurities and as incidental to the manufacture of the alloy.
2. A cast iron alloy consisting of from about 1.0 to about 4.0% nickel, a substantial and eflective amount of molybdenum up to about 1.0%, silicon from about .80 to about 2.5%, and carbon from about 1.5 to about 4.0%, the remainder of the alloy being iron except for constituents present as impurities and as incidental to the manufacture of the alloy.
3. A cast iron alloy consisting of about 1.5% nickel, about 25% molybdenum, about 1.5% silicon, and from about 1.5 to 4.0% carbon, the remainder of the alloy being iron except for constituents present as impurities and as incidental to the manufacture of the alloy.
In testimony whereof, we hereunto sign
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US185649A US1762109A (en) | 1927-04-21 | 1927-04-21 | Cast-iron alloy |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US185649A US1762109A (en) | 1927-04-21 | 1927-04-21 | Cast-iron alloy |
Publications (1)
Publication Number | Publication Date |
---|---|
US1762109A true US1762109A (en) | 1930-06-03 |
Family
ID=22681873
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US185649A Expired - Lifetime US1762109A (en) | 1927-04-21 | 1927-04-21 | Cast-iron alloy |
Country Status (1)
Country | Link |
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US (1) | US1762109A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3302595A (en) * | 1964-02-13 | 1967-02-07 | Erik A Sabel | Safe |
US3411957A (en) * | 1965-06-01 | 1968-11-19 | Nisso Seiko Kabushiki Kaisha | Method of manufacturing a cast iron roll |
CN102162060A (en) * | 2011-03-30 | 2011-08-24 | 中南大学 | Cone ring material of synchronizer and preparation method thereof |
-
1927
- 1927-04-21 US US185649A patent/US1762109A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3302595A (en) * | 1964-02-13 | 1967-02-07 | Erik A Sabel | Safe |
US3411957A (en) * | 1965-06-01 | 1968-11-19 | Nisso Seiko Kabushiki Kaisha | Method of manufacturing a cast iron roll |
CN102162060A (en) * | 2011-03-30 | 2011-08-24 | 中南大学 | Cone ring material of synchronizer and preparation method thereof |
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