US2209A - Improvement in the mode of hardening steel - Google Patents
Improvement in the mode of hardening steel Download PDFInfo
- Publication number
- US2209A US2209A US2209DA US2209A US 2209 A US2209 A US 2209A US 2209D A US2209D A US 2209DA US 2209 A US2209 A US 2209A
- Authority
- US
- United States
- Prior art keywords
- mode
- improvement
- hardening steel
- steel
- oil
- 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
Links
- 229910000831 Steel Inorganic materials 0.000 title description 12
- 239000010959 steel Substances 0.000 title description 12
- 239000003610 charcoal Substances 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000004328 sodium tetraborate Substances 0.000 description 6
- 235000010339 sodium tetraborate Nutrition 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 229910001208 Crucible steel Inorganic materials 0.000 description 4
- 235000020030 perry Nutrition 0.000 description 4
- 241000283153 Cetacea Species 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/58—Oils
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M1/00—Liquid compositions essentially based on mineral lubricating oils or fatty oils; Their use as lubricants
- C10M1/08—Liquid compositions essentially based on mineral lubricating oils or fatty oils; Their use as lubricants with additives
Definitions
- the proportions of the composition may be as follows, variable at pleasure: two ounces of pulverized charcoal, one ounce of pulve r ized borax, and one quart of oil, (whale or other kind of oil,) to be mixed in any suitable vessel.
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Forging (AREA)
Description
UNITED STATES PATENT OFFIcEt PERRY DAVIS, OF FALL RIVER, MASSACHUSETTS.
IMPROVEMENT IN THE MODE OF HARDENING STEEL.
Specification forming part of Letters Patent No. 2,209, dated August 4, 1841.
To all whom it may concern:
Be it known that I, PERRY DAVIS, of Fall River, in the county of Bristol and State of Massachusetts, have invented a new and useful Improvement in the Process of Hardening Steel, so that it can be hammered at a reduced temperature without breaking, which is described as follows In the ordinary mode of working cast-steel the metal is heated and worked on the anvil to the form required. It is then reheated and plunged into water, after which it is tempered, so as to reduce it to the proper hardness necessary to being heated to the color indicating the degree of hardness required, after which it is cooled by being plunged into oil or water. After the steel is hardened, and before tempering, itt'requently happens that the instrument forged is found sprung or bent, when, owing to the brittleness of the metalhardened in this manner,it cannot be straightened without being broken. To obviate this difficulty the presentprocess isintended, which consists in plan g ing the instrument of cast-steel, after being forged into shape, as in the old mode, and then reheated, into a composition of borax, oil, and
charcoal, to harden it, instead of water, which mode of hardening gives an elasticity to the metal, with the same degree of hardness that was obtained by the old method, so that the metal, after being hardened in this way, can be straightened or bent without any danger of being broken. The steel, being hardened in this manner, may be tempered in the ordinary way to whatever degree of hardness is required.
The proportions of the composition may be as follows, variable at pleasure: two ounces of pulverized charcoal, one ounce of pulve r ized borax, and one quart of oil, (whale or other kind of oil,) to be mixed in any suitable vessel.
What Iclaim as my invention, and which I desire to secure by Letters Patent, isv The mode of hardening steel so as to render it flexible by means of the composition of oil, charcoal, and borax, as set forth.
PERRY DAVIS.
Witnesses:
CYRUS ALDIN, ISAAC W. PAGE.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2209A true US2209A (en) | 1841-08-04 |
Family
ID=2062500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US2209D Expired - Lifetime US2209A (en) | Improvement in the mode of hardening steel |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2209A (en) |
-
0
- US US2209D patent/US2209A/en not_active Expired - Lifetime
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