US1276978A - Method of plating metal castings. - Google Patents
Method of plating metal castings. Download PDFInfo
- Publication number
- US1276978A US1276978A US20577917A US20577917A US1276978A US 1276978 A US1276978 A US 1276978A US 20577917 A US20577917 A US 20577917A US 20577917 A US20577917 A US 20577917A US 1276978 A US1276978 A US 1276978A
- Authority
- US
- United States
- Prior art keywords
- plating
- castings
- plating metal
- lead
- metal
- 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
- 238000007747 plating Methods 0.000 title description 28
- 238000000034 method Methods 0.000 title description 13
- 238000005058 metal casting Methods 0.000 title description 2
- 238000005266 casting Methods 0.000 description 18
- 239000002184 metal Substances 0.000 description 18
- 229910052751 metal Inorganic materials 0.000 description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 16
- 239000003513 alkali Substances 0.000 description 10
- 230000006872 improvement Effects 0.000 description 9
- 229910052742 iron Inorganic materials 0.000 description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 230000004907 flux Effects 0.000 description 5
- 229910000978 Pb alloy Inorganic materials 0.000 description 3
- 239000003518 caustics Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 235000002639 sodium chloride Nutrition 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- 241000861718 Chloris <Aves> Species 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 229910001296 Malleable iron Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- 235000011167 hydrochloric acid Nutrition 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 1
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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
Definitions
- My invention relates to the operation of plating castin articularly iron castings, with lead, lead allbys, or other metals; and the ob'ect of the invention is to provide a metho of treatin the castings to prepare them for the plating operation so that the plating metal will properly adhere to the castings. It has not been feasible, so far as I am aware, to plate iron castings, such, for example, as pipe unions, elbows or other fittings, with lead or'a lead alloy or other similar plating metal, so that the plating metal will adhere to the casting in apermanent and satisfactory manner; or at least it has not been possible. to successfully plate such articles.
- iron castings (the same is true of steel and malleable iron castings) contain foreign matters, such as silicon and graphite, and also traces, possibly, of sand from the molders flask. The presence of these substances in the surface of the casting hinders the adhesion of the plating metal thereto.
- the castings before plating are submerged in a bath of molten caustic alkali.
- I employ preferabl caustic soda to which a small amount of orax may be added.
- the cans ie alkali acts upon the foreign substances, si 'con and graphite, for example, in the surfaces of the castings dissolving and chenncallyuniting with said substances, with the result that when the castings are dipped into the plat ing metal the metal will adhere smoothly and permanently to the surfaces of the cast-
- the castings are'to be plated with lead or lead alloy, I preferably follow substantially the "method disclosed in the patent to McClintock and Shoemaker. No. 1,195,376, modified by the improved procedure set forth in my co-pending application filed July 5, 1917, Serial No. 1 8,728, of wh1ch the present application is a continuation, Preferably the metal articles, after being re- Patent-ed Aug. 27, 1918.
- the flux I prefer to use for lead plating operations is the one disclosed in my co-pending a plica-tion above referred to containing chlbrid of zinc and common salt to which ma be added a small percentage of tin chlori I use preferably a flux consisting of eighty per cent. of zinc chlorid, fifteen per cent. of common salt, and five per cent. of tin chlorid.
- Improvement in the method of plating iron or steel castings which consists in bringing the surface to be plated into contact with a caustic alkali heated to a molten state and thereafter plating the same with a plating metal.
- Improvement in the method of plating iron or steel castings which'consists in bringing the surface to be plated into contact with a caustic alkali heated to a molten state, washing the surface with water, treating it with an acid and thereafter plating the same with a platin metal.
- Improvement in t e method of plating bringin the surface .to be plated into contact wit an alkali heated to a molten state, washin it, treating it with an acid, and
- Improvement in the method of lead plating iron or steel castings which consists in bringing the surface to be plated into contact with an alkali in a molten state and afterward into contact with molten lead.
- Improvement in the method of lead plating iron or steel castings which consists in bringing the surface to be plated into contact with an alkali in a molten state, washing the surface with water, then treat-- ing it with an acid and afterward bringing it into contact with molten lead.
- Improvement in the method of plating metal articles which consists in immersing the same in a bath of alkali heated to red heat and thereafter introducin the article so treated into a body of mo ten plating rnatant flux.
- Improvement m the method of plating iron or steel castings which consists in immersing the same in a bath of alkali heated 1b to red heat, washing them, pickling the cable'- oz'iiiit mn ihh'y'be' obtained mg a. was, Inning m " ⁇ iiii'hiliiliiiiE-Tt "rats-1m;
- Improvement in the method of plating metal articles which: consists in immersing the same in a bath of caustic soda and borax heated to red heat, and thereafter introducing them into a body of molten plating metal through a supernatantflux.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating With Molten Metal (AREA)
Description
UNITED STATES PATENT OFFICE.
ROBERT JAY SHOEMAKER, OF MILWAUKEE, WISCONSIN.
METHOD OF PLATING METAL CASTIN GS.
No Drawing. Continuation of application Serial No. 178,728, filed July 5, 1917.
December 6, 1917.
To all whom it may concern:
Be it known that I, Ronnnr J. SHOE- MAKER, a citizen of the United States, residing at Milwaukee, in the county of Mllwaukee and State of Wisconsin, have invented certain new and useful Improve ments in Methods of Plating Metal Castings, of which the following is a specification.
My invention relates to the operation of plating castin articularly iron castings, with lead, lead allbys, or other metals; and the ob'ect of the invention is to provide a metho of treatin the castings to prepare them for the plating operation so that the plating metal will properly adhere to the castings. It has not been feasible, so far as I am aware, to plate iron castings, such, for example, as pipe unions, elbows or other fittings, with lead or'a lead alloy or other similar plating metal, so that the plating metal will adhere to the casting in apermanent and satisfactory manner; or at least it has not been possible. to successfully plate such articles. The reason for the difiiculty is to be found in the fact that iron castings (the same is true of steel and malleable iron castings) contain foreign matters, such as silicon and graphite, and also traces, possibly, of sand from the molders flask. The presence of these substances in the surface of the casting hinders the adhesion of the plating metal thereto.
In accordance with my invention the castings before plating are submerged in a bath of molten caustic alkali. I employ preferabl caustic soda to which a small amount of orax may be added. The cans ie alkali acts upon the foreign substances, si 'con and graphite, for example, in the surfaces of the castings dissolving and chenncallyuniting with said substances, with the result that when the castings are dipped into the plat ing metal the metal will adhere smoothly and permanently to the surfaces of the cast- If the castings are'to be plated with lead or lead alloy, I preferably follow substantially the "method disclosed in the patent to McClintock and Shoemaker. No. 1,195,376, modified by the improved procedure set forth in my co-pending application filed July 5, 1917, Serial No. 1 8,728, of wh1ch the present application is a continuation, Preferably the metal articles, after being re- Patent-ed Aug. 27, 1918.
This application filed Serial No. 205,779.
moved from the molten alkali, are first washed with water and then pickled in an acid, muria-tic acid, for example. After this they are introduced into a body of the molten plating metal, lead, for example, by which term I intend to include alloys of lead, through a supernatant'flux. The flux I prefer to use for lead plating operations is the one disclosed in my co-pending a plica-tion above referred to containing chlbrid of zinc and common salt to which ma be added a small percentage of tin chlori I use preferably a flux consisting of eighty per cent. of zinc chlorid, fifteen per cent. of common salt, and five per cent. of tin chlorid.
I claim:
1. Improvement in the method of plating iron or steel castings which consists in bringing the surface to be plated into contact with a caustic alkali heated to a molten state and thereafter plating the same with a plating metal.
2. Improvement in the method of plating iron or steel castings which'consists in bringing the surface to be plated into contact with a caustic alkali heated to a molten state, washing the surface with water, treating it with an acid and thereafter plating the same with a platin metal.
3. Improvement in t e method of plating bringin the surface .to be plated into contact wit an alkali heated to a molten state, washin it, treating it with an acid, and
then bringing it into contact with the plating metal in a molten state.
5. Improvement in the method of lead plating iron or steel castings which consists in bringing the surface to be plated into contact with an alkali in a molten state and afterward into contact with molten lead.
6. Improvement in the method of lead plating iron or steel castings which consists in bringing the surface to be plated into contact with an alkali in a molten state, washing the surface with water, then treat-- ing it with an acid and afterward bringing it into contact with molten lead.
- metal through a su 7. Improvement in the method of plating metal articles which consists in immersing the same in a bath of alkali heated to red heat and thereafter introducin the article so treated into a body of mo ten plating rnatant flux.
8. Improvement m the method of plating iron or steel castings which consists in immersing the same in a bath of alkali heated 1b to red heat, washing them, pickling the cable'- oz'iiiit mn ihh'y'be' obtained mg a. was, Inning m "{iiii'hiliiliiiiE-Tt "rats-1m;
' Washington, n. c." 1
castings in an acid and then introducing them 1nt0- a body of plating, metal in a. molten state through a supernatant flux.
9. Improvement in the method of plating metal articles which: consists in immersing the same in a bath of caustic soda and borax heated to red heat, and thereafter introducing them into a body of molten plating metal through a supernatantflux.
ROBERT J AYSHOEMAKER.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US20577917A US1276978A (en) | 1917-12-06 | 1917-12-06 | Method of plating metal castings. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US20577917A US1276978A (en) | 1917-12-06 | 1917-12-06 | Method of plating metal castings. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1276978A true US1276978A (en) | 1918-08-27 |
Family
ID=3344578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US20577917A Expired - Lifetime US1276978A (en) | 1917-12-06 | 1917-12-06 | Method of plating metal castings. |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1276978A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2458660A (en) * | 1943-01-23 | 1949-01-11 | J H Shoemaker | Process of making composite metal articles |
| US2493768A (en) * | 1944-06-21 | 1950-01-10 | Horace C Knerr | Method of lead coating |
-
1917
- 1917-12-06 US US20577917A patent/US1276978A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2458660A (en) * | 1943-01-23 | 1949-01-11 | J H Shoemaker | Process of making composite metal articles |
| US2493768A (en) * | 1944-06-21 | 1950-01-10 | Horace C Knerr | Method of lead coating |
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