US2801164A - Hard facing alloys - Google Patents
Hard facing alloys Download PDFInfo
- Publication number
- US2801164A US2801164A US466430A US46643054A US2801164A US 2801164 A US2801164 A US 2801164A US 466430 A US466430 A US 466430A US 46643054 A US46643054 A US 46643054A US 2801164 A US2801164 A US 2801164A
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- United States
- Prior art keywords
- alloys
- hard facing
- facing alloys
- hard
- amounts
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
- B23K35/308—Fe as the principal constituent with Cr as next major constituent
Definitions
- the alloys fall within the following ranges:
- Patented July 30, 1957 ice iron-base alloys, with molybdenum and cobalt in the stated ranges.
- Knoop hardnesses of these alloys are high, ranging from about 650 at the lower end of the range up to about 1050 with the silicon-containing variety.
- the low carbon alloy i. e., Example 3
- the low carbon alloy is surprisingly hard, having a hardness of 48/53 Rockwell C scale, yet is machinable and highly resistant to heat checking when used for high temperature purposes. It out-performs cobalt-base chromium-tungsten alloys as a roller guide in rolling mill applications. In other words, it takes high loads at high temperature, withstands changes in temperature, and wears well.
- a hard facing alloy having a Knoop hardness of from about 650 to about 1050, said alloy consisting of carbon in amounts of from about 1 to about 4.5%, chromium in amounts of from about 17 to about 27%, molybdenum in amounts of from about 4 to about 10%, cobalt in amounts of from about 5 to about and silicon up to about 4%, the remainder being substantially all iron, said alloy being substantially free of tungsten.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatment Of Steel (AREA)
Description
United States Patent HARD FACING ALLOYS Arthur T. Cape, Los Angeles, Calif., assignor to Coast Metals, Inc., Little Ferry, N. J., a corporation of Delaware No Drawing. Application November 2, 1954, Serial No. 466,430
1 Claim. (Cl. 75126) This invention relates generally to hard facing alloys, but has reference more particularly to alloys of this type which are abnormally hard for the carbon-chromium range which they cover.
In accordance with the invention, the alloys fall within the following ranges:
Examples Range Carbon. percent. 1-4. 5 4. 25 4. 25 l. 25 1. 75 Chromiurm 1727 23 23 23 23 Molybdenum do. 4-10 8 8 8 8 Cobalt -do 5-25 10 10 10 10 Silicon -.do Up 1.04 None 2 None None on do Balance Bal. Bal. Bal. Bal
Hardness (Rockwell G The alloys, as noted, are essentially 23% chromitun,
Patented July 30, 1957 ice iron-base alloys, with molybdenum and cobalt in the stated ranges.
The Knoop hardnesses of these alloys are high, ranging from about 650 at the lower end of the range up to about 1050 with the silicon-containing variety.
The low carbon alloy, i. e., Example 3, is surprisingly hard, having a hardness of 48/53 Rockwell C scale, yet is machinable and highly resistant to heat checking when used for high temperature purposes. It out-performs cobalt-base chromium-tungsten alloys as a roller guide in rolling mill applications. In other words, it takes high loads at high temperature, withstands changes in temperature, and wears well.
It is to be understood that the expression the remainder being substantially iron, as used in the claim, is to be construed as including any other ingredients or impurities in relatively small or trace amounts, which are found associated with the various constituents of the alloy.
Having thus described my invention, I claim:
A hard facing alloy having a Knoop hardness of from about 650 to about 1050, said alloy consisting of carbon in amounts of from about 1 to about 4.5%, chromium in amounts of from about 17 to about 27%, molybdenum in amounts of from about 4 to about 10%, cobalt in amounts of from about 5 to about and silicon up to about 4%, the remainder being substantially all iron, said alloy being substantially free of tungsten.
References Cited in the file of this patent FOREIGN PATENTS 678,449 Great Britain Sept. 3, 1952
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US466430A US2801164A (en) | 1954-11-02 | 1954-11-02 | Hard facing alloys |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US466430A US2801164A (en) | 1954-11-02 | 1954-11-02 | Hard facing alloys |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2801164A true US2801164A (en) | 1957-07-30 |
Family
ID=23851719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US466430A Expired - Lifetime US2801164A (en) | 1954-11-02 | 1954-11-02 | Hard facing alloys |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2801164A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB678449A (en) * | 1949-09-30 | 1952-09-03 | Boehler & Co Ag Geb | Weldable and highly heat-proof hard alloys containing cobalt |
-
1954
- 1954-11-02 US US466430A patent/US2801164A/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB678449A (en) * | 1949-09-30 | 1952-09-03 | Boehler & Co Ag Geb | Weldable and highly heat-proof hard alloys containing cobalt |
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