US204202A - Improvement in processes of preparing iron for case or surface hardening - Google Patents
Improvement in processes of preparing iron for case or surface hardening Download PDFInfo
- Publication number
- US204202A US204202A US204202DA US204202A US 204202 A US204202 A US 204202A US 204202D A US204202D A US 204202DA US 204202 A US204202 A US 204202A
- Authority
- US
- United States
- Prior art keywords
- case
- iron
- improvement
- processes
- surface hardening
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title description 40
- 229910052742 iron Inorganic materials 0.000 title description 20
- 238000000034 method Methods 0.000 title description 8
- 239000000203 mixture Substances 0.000 description 10
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 229910001018 Cast iron Inorganic materials 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 239000004328 sodium tetraborate Substances 0.000 description 4
- 235000010339 sodium tetraborate Nutrition 0.000 description 4
- 101700050571 SUOX Proteins 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003303 reheating Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/02—Pretreatment of the material to be coated
-
- 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
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
- C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface
- C21D7/06—Modifying the physical properties of iron or steel by deformation by cold working of the surface by shot-peening or the like
Definitions
- my invention consists in a process for preparing iron for case or surface hardening, as will be hereinafter more fully set forth.
- the iron to be hardened is first heated to a white heat, after which it is coated with the mixture of borax and cast-iron chips or borings. This may be done either by sprinkling the mixture on the hot iron or by rolling the iron in the mixture. The iron is then reheated to flux the coating, and it is finally compressed by hammering or otherwise. This may be repeated as many times as desired, according to the thickness of steel surface desired.
- the article can be allowed to cool and then finished, and after finishing heated red hot rnd plunged into water, which hardens it. If finishing is not required, it can be hardened as soon as it is forged.
- Iron treated by my process can be used in state; and it can be used in any small shop a where the ordinary process of case-hardening is not used on account of no facilities for using it.
Description
UNITED STATES PATENT OFFICE.
SAMUEL A. CONRAD, OF TERRE HAUTE, INDIANA.
IMPROVEMENT IN PROCESSES 0F PREPARING IRON FOR CASE 0R SURFACE HARDENING.
Specification forming part of Letters Patent N 0. 204,202, dated May 28, 1878; application filed August 10, 1877'.
' the following is a full, clear, and exact description thereof.
The nature of my invention consists in a process for preparing iron for case or surface hardening, as will be hereinafter more fully set forth.
In my process I use a mixture composed of one part borax and two parts cast-iron chips or borings, or somewhat in that proportion.
The iron to be hardened is first heated to a white heat, after which it is coated with the mixture of borax and cast-iron chips or borings. This may be done either by sprinkling the mixture on the hot iron or by rolling the iron in the mixture. The iron is then reheated to flux the coating, and it is finally compressed by hammering or otherwise. This may be repeated as many times as desired, according to the thickness of steel surface desired.
After the forging is completed the article can be allowed to cool and then finished, and after finishing heated red hot rnd plunged into water, which hardens it. If finishing is not required, it can be hardened as soon as it is forged.
Iron treated by my process can be used in state; and it can be used in any small shop a where the ordinary process of case-hardening is not used on account of no facilities for using it.
Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-
The continuous process herein described for preparing iron for case or surface hardeningnamely, heating the iron substantially to the heat specified, coating it with a mixture of boraxand iron chips, reheating to flux the coating, and finally mechanically compressing it, substantially as and for the purposes herein set forth.
In testimony that I claim the foregoing I have hereunto set my hand this 16th day of July, 1877.
v SAML. A. CONRAD. Witnesses:
J. K. LAPE, H. MONKHOUSE.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US204202A true US204202A (en) | 1878-05-28 |
Family
ID=2273607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US204202D Expired - Lifetime US204202A (en) | Improvement in processes of preparing iron for case or surface hardening |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US204202A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180093851A1 (en) * | 2015-02-27 | 2018-04-05 | Amphenol Corporation | Method of installing cable on cable reel |
-
0
- US US204202D patent/US204202A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180093851A1 (en) * | 2015-02-27 | 2018-04-05 | Amphenol Corporation | Method of installing cable on cable reel |
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