US134872A - Improvement in processes of hardening steel - Google Patents
Improvement in processes of hardening steel Download PDFInfo
- Publication number
- US134872A US134872A US134872DA US134872A US 134872 A US134872 A US 134872A US 134872D A US134872D A US 134872DA US 134872 A US134872 A US 134872A
- Authority
- US
- United States
- Prior art keywords
- steel
- improvement
- processes
- hardening steel
- borax
- 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
- 238000000034 method Methods 0.000 title description 4
- 229910021538 borax Inorganic materials 0.000 description 6
- 239000004328 sodium tetraborate Substances 0.000 description 6
- 235000010339 sodium tetraborate Nutrition 0.000 description 6
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 4
- 229910052753 mercury Inorganic materials 0.000 description 4
- 239000003513 alkali Substances 0.000 description 3
- 239000003518 caustics Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- -1 or its equivalent Inorganic materials 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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 object of my invention is to make steel intensely hard without rendering it brittle; andthis object I attain by treating it with borax or caustic alkali, or their equivalents, and mercury, in the manner which I will now proceed to describe.
- a preparatory treatment of the hot steel with caustic alkali will render the steel somewhat harder than the borax treatment.
- Other alkaline substances may be employed for the preparatory process in place of borax or caustic alkali; but I have found the latter to be particularly effective, so much so that by its aid and by the mercury bath, I have rendered drilling-tools hard enough to bore holes through ordinary files.
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)
- Heat Treatment Of Articles (AREA)
Description
UNITED STATES A'IENT OFFICE.
SAMUEL W. ETOHELL, OF WEATHERLY, AssIeNoE TO HIMSELF, 1). L. EATON, 0E sAME PLAcE, AND ANNIE E. ALLEN, 0E PHILADELPHIA, PA.
IMPROVEMENT IN PROCESSES OF HARDENING STEEL.
Specification forming part of Letters Patent No. 134,872, dated January 14, 1873.
To all whom it may concern:
Be it known that I, SAMUEL W. ETCHELL, of Weatherly, Carbon county, Pennsylvania,
have invented a Process of Hardening Steel,
of which the following is a specification:
The object of my invention is to make steel intensely hard without rendering it brittle; andthis object I attain by treating it with borax or caustic alkali, or their equivalents, and mercury, in the manner which I will now proceed to describe.
I heat the tool or other object of steel until it is of a bright red color, and then roll the portion to be hardened in pulverized borax, or I apply the latter to the heated steel in any other convenient manner, after which the steel may be again heated, and the operation may be repeated several times, although in most cases one application of the borax will suflice. After this treatment, and while the steel is red hot, I plunge as much of it as is required to be hardened into a bath of mercury, which renders the steel intensely hard without imparting to it the brittle character which results from plunging heated steel into water.
A preparatory treatment of the hot steel with caustic alkali will render the steel somewhat harder than the borax treatment. Other alkaline substances may be employed for the preparatory process in place of borax or caustic alkali; but I have found the latter to be particularly effective, so much so that by its aid and by the mercury bath, I have rendered drilling-tools hard enough to bore holes through ordinary files.
I claim as my invention- The process of hardening steel by treating the same with borax, or its equivalent, and mercury, as set forth.
In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.
SAMUEL W. ETOHELL.
\Vitnesses:
J. PATTON MooRE, J OHN F. DAVIs.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US134872A true US134872A (en) | 1873-01-14 |
Family
ID=2204288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US134872D Expired - Lifetime US134872A (en) | Improvement in processes of hardening steel |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US134872A (en) |
-
0
- US US134872D patent/US134872A/en not_active Expired - Lifetime
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