US2088593A - Carburizing box with inner surface resistant to carbon penetration - Google Patents
Carburizing box with inner surface resistant to carbon penetration Download PDFInfo
- Publication number
- US2088593A US2088593A US19196A US1919635A US2088593A US 2088593 A US2088593 A US 2088593A US 19196 A US19196 A US 19196A US 1919635 A US1919635 A US 1919635A US 2088593 A US2088593 A US 2088593A
- Authority
- US
- United States
- Prior art keywords
- box
- nickel
- carburizing
- carbon penetration
- surface resistant
- 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
- 238000005255 carburizing Methods 0.000 title description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title description 5
- 229910052799 carbon Inorganic materials 0.000 title description 5
- 230000035515 penetration Effects 0.000 title description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 24
- 229910052759 nickel Inorganic materials 0.000 description 11
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 239000000470 constituent Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- 238000005275 alloying Methods 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 239000000788 chromium alloy Substances 0.000 description 1
- BIJOYKCOMBZXAE-UHFFFAOYSA-N chromium iron nickel Chemical compound [Cr].[Fe].[Ni] BIJOYKCOMBZXAE-UHFFFAOYSA-N 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004901 spalling Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Images
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
- C23C8/04—Treatment of selected surface areas, e.g. using masks
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0006—Details, accessories not peculiar to any of the following furnaces
- C21D9/0025—Supports; Baskets; Containers; Covers
Definitions
- My invention relates to carburizing boxes and has for its object to provide a carburizing box which is made of reduced porosity and increased my invention, the details being exaggerated for illustrative purposes;
- Fig. 2 is an enlarged similarly exaggerated sectional view through one wall thereof on the line 2-2.
- the carburizing box I0 is made of suitable material, such as nickel-chromium-iron alloy, and by my invention same can be of relatively lower alloying constituents, such as lower nickel 20 and chromium by reason of the provision of the interior coating of nickel, etc., as stated, thereby obtaining equal life with lower expense for alloying constituents, or increased life for the same expense put into alloying constituents.
- the interior coating i2 may be applied in various ways but it is preferably applied by spraying with the well known Shoup gun it whereby the coating material is sprayed as it is melted.
- the deposited metal 30 is preferably swedged to close up its surface grain and give it a smoother and better surface and to force the coating into any small depressions or irregularities in the original interior surface of the box.
- carburizing box undergoing the treatment of A single coating is ordinarily suflicient, but plural applications may be made if desired, preferably with swedging after each application.
- Nickel gives the best results when applied with the Shoup gun to the interior carburizing boxes of nickel and chromium alloy constituents, serving efiectually to close the pores and to give added resistance to carbon penetration, but materials such as copper and the like may be used to substantial advantage.
- the materials used are preferably those having considerable pliability, ductility and toughness, and which are not greatly different in coefflcient of expansion from the alloy material to which the coating is applied so that parting and spalling are avoided in use under the high temperatures and severe conditions to which exposed, nickel and copper being well adapted in those respects.
- the box alloy material comprises nickel
- a metallic coating also comprising nickel is well adapted for the purposes of my invention.
- Aparburizing box of alloy material comprising nickel, chromium, iron, etc., having a spray deposited interior surface layer of nickel.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Coating By Spraying Or Casting (AREA)
Description
3, 1937. H. H. HARRIS 88,593
CARBURIZING BOX WITH INNER SURFACE RESISTANT TO CARBON PENETRATION Filed May 1, 1955 INVENTOR //E/VY b. HARP/6.
ATTORNEY5 Patented Aug. 3, 1937 UNITED STATES CARBURTZING BOX WITH INNER SURFACE RESISTANT T CARBON PENETRATION Henry H. Harris, Boston, Mass. Application May 1 1935, Serial No. 19,196
2 Claims.
My invention relates to carburizing boxes and has for its object to provide a carburizing box which is made of reduced porosity and increased my invention, the details being exaggerated for illustrative purposes; and
Fig. 2 is an enlarged similarly exaggerated sectional view through one wall thereof on the line 2-2.
The carburizing box I0 is made of suitable material, such as nickel-chromium-iron alloy, and by my invention same can be of relatively lower alloying constituents, such as lower nickel 20 and chromium by reason of the provision of the interior coating of nickel, etc., as stated, thereby obtaining equal life with lower expense for alloying constituents, or increased life for the same expense put into alloying constituents.
. The interior coating i2 may be applied in various ways but it is preferably applied by spraying with the well known Shoup gun it whereby the coating material is sprayed as it is melted.
While not always essential, the deposited metal 30 is preferably swedged to close up its surface grain and give it a smoother and better surface and to force the coating into any small depressions or irregularities in the original interior surface of the box.
carburizing box undergoing the treatment of A single coating is ordinarily suflicient, but plural applications may be made if desired, preferably with swedging after each application.
Nickel gives the best results when applied with the Shoup gun to the interior carburizing boxes of nickel and chromium alloy constituents, serving efiectually to close the pores and to give added resistance to carbon penetration, but materials such as copper and the like may be used to substantial advantage.
The materials used are preferably those having considerable pliability, ductility and toughness, and which are not greatly different in coefflcient of expansion from the alloy material to which the coating is applied so that parting and spalling are avoided in use under the high temperatures and severe conditions to which exposed, nickel and copper being well adapted in those respects. When the box alloy material comprises nickel,
a metallic coating also comprising nickel is well adapted for the purposes of my invention.
I claim:
1. Aparburizing box of alloy material comprising nickel, chromium, iron, etc., having a spray deposited interior surface layer of nickel.
2. The process of imparting enhanced chemical and physical resistance to carbon penetration to a carburizing box of an alloy material comprising nickel, chromium; iron, etc., which consists of spraying the interior surface of the box with nickel in molten, finely-divided state, thereby depositing a layer of nickel thereon.
HENRY H. BIS;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US19196A US2088593A (en) | 1935-05-01 | 1935-05-01 | Carburizing box with inner surface resistant to carbon penetration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US19196A US2088593A (en) | 1935-05-01 | 1935-05-01 | Carburizing box with inner surface resistant to carbon penetration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2088593A true US2088593A (en) | 1937-08-03 |
Family
ID=21791934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US19196A Expired - Lifetime US2088593A (en) | 1935-05-01 | 1935-05-01 | Carburizing box with inner surface resistant to carbon penetration |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2088593A (en) |
-
1935
- 1935-05-01 US US19196A patent/US2088593A/en not_active Expired - Lifetime
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