US221200A - Improvement in galvanizing metal - Google Patents
Improvement in galvanizing metal Download PDFInfo
- Publication number
- US221200A US221200A US221200DA US221200A US 221200 A US221200 A US 221200A US 221200D A US221200D A US 221200DA US 221200 A US221200 A US 221200A
- Authority
- US
- United States
- Prior art keywords
- improvement
- chloride
- galvanizing metal
- galvanizing
- zinc
- 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
- 238000005246 galvanizing Methods 0.000 title description 8
- 239000002184 metal Substances 0.000 title description 6
- 229910052751 metal Inorganic materials 0.000 title description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 16
- VEXZGXHMUGYJMC-UHFFFAOYSA-M chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 14
- 229910052742 iron Inorganic materials 0.000 description 8
- HCHKCACWOHOZIP-UHFFFAOYSA-N zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 8
- 229910052725 zinc Inorganic materials 0.000 description 8
- 239000011701 zinc Substances 0.000 description 8
- 239000002253 acid Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 229910000640 Fe alloy Inorganic materials 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000002708 enhancing Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- -1 zinc iron Chemical compound 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
Definitions
- Our invention consists in scaling and clearing iron objects prior to coating the same with zinc or other metals by subjecting the objects to an acidulated aqueous solution of chloride of zinc, as described hereinafter.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating With Molten Metal (AREA)
Description
m STATES PATENT OFFICE.
WILLIAM H. WAHL AND EDWARD Y. ELTONHEAD, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNORS OF ONE-THIRD OF THEIR RIGHT TO CALEB H. HORNE, OF SAME PLACE.
|MPROVEMENT IN GALVANIZING METAL.
Specification forming part of Letters Patent No. 221,200, dated November 4, 1879; application filed To all whom it may concern:
Be it known that we, WILLIAM H. WAHL and EDWARD Y. ELTONHEAD, both of Philadelphia, Pennsylvania, have invented a new and useful Improvement in Galvanizing, of which the following is a specification.
Our invention consists in scaling and clearing iron objects prior to coating the same with zinc or other metals by subjecting the objects to an acidulated aqueous solution of chloride of zinc, as described hereinafter.
In preparing the bath we dissolve chloride of zinc in water and add from five to ten per cent. of mnriatic acid, the solution being afterward concentrated by evaporation until it has become of a sirupy consistency. This concentration is not absolutely essential; but we have found the acidulated chloride to be more active in the performance of its duties, when deprived of a portion of its water, and the action is facilitated by the application of heat.
We may remark here that a cheap way of making this solution is to utilize the precipitated zinc iron alloy of galvanizing baths, which is commonly called dross, by converting it into a chloride of zine, and then dissolving this cheap chloride in water and adding the proper amount of acid. The iron objects are immersed 'in this solution, and are permitted to remain therein until entirely freed from the scale or oxide. This may require from fifteen minutes to two hours, according to the thickness and tenacity of the scale on the surface of the iron.
While the chloride of zinc alone or the acid alonepossesses the property of clearing scale from the surface of iron, wehave found that when combined each ingredient enhances the activity ofthe other, and consequently that the clearing effect is more rapidly accomplished by the acidulated bath than by the chloride
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US221200A true US221200A (en) | 1879-11-04 |
Family
ID=2290597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US221200D Expired - Lifetime US221200A (en) | Improvement in galvanizing metal |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US221200A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997003167A1 (en) * | 1995-07-13 | 1997-01-30 | Henkel Corporation | Inhibited pickling acids containing chloride and zinc ions |
| US5712236A (en) * | 1995-08-02 | 1998-01-27 | Church & Dwight Co., Inc. | Alkali metal cleaner with zinc phosphate anti-corrosion system |
| US7790607B2 (en) | 2005-03-25 | 2010-09-07 | Sandisk 3D Llc | Method for reducing dielectric overetch using a dielectric etch stop at a planar surface |
-
0
- US US221200D patent/US221200A/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997003167A1 (en) * | 1995-07-13 | 1997-01-30 | Henkel Corporation | Inhibited pickling acids containing chloride and zinc ions |
| US5712236A (en) * | 1995-08-02 | 1998-01-27 | Church & Dwight Co., Inc. | Alkali metal cleaner with zinc phosphate anti-corrosion system |
| US7790607B2 (en) | 2005-03-25 | 2010-09-07 | Sandisk 3D Llc | Method for reducing dielectric overetch using a dielectric etch stop at a planar surface |
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