DE375426C - Procedure for derusting - Google Patents
Procedure for derustingInfo
- Publication number
- DE375426C DE375426C DEK83362D DEK0083362D DE375426C DE 375426 C DE375426 C DE 375426C DE K83362 D DEK83362 D DE K83362D DE K0083362 D DEK0083362 D DE K0083362D DE 375426 C DE375426 C DE 375426C
- Authority
- DE
- Germany
- Prior art keywords
- rust
- iron
- derusting
- procedure
- acids
- 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
Links
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
- C23G1/08—Iron or steel
- C23G1/088—Iron or steel solutions containing organic acids
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)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Description
Verfahren zur Entrostung Eisenrost besteht aus Oxyden bzw. Karbonaten des Eisens. Eine Entrostung kann auf mechanische Weise, z. B. durch Abkratzen mit einer- Stahlbürste, mittels Sandstrahlgebläse usw., oder aber auf rein chemischem Uege herbeigeführt werden. In dieser Hinsieht kann man zwei verschiedene Arten der Entrostung unterscheiden.Process for derusting Iron rust consists of oxides or carbonates of iron. Rust removal can be done in a mechanical way, e.g. B. by scraping with a steel brush, by means of a sandblasting blower, etc., or purely chemical Uege be brought about. In this regard, there are two different types of Distinguish rust removal.
Die eine führt den Eisenrost in Verbindungen über, die das -Metall vor weiterem Rostangriff-; schützen. So führt das Patent 223085 die Rostschicht in eine Farblackschicht über.One converts the iron rust into compounds that protect the metal from further rust attack; protection. Patent 223085, for example, converts the rust layer into a layer of colored lacquer.
Die zweite Art chemischer Entrostung löst die Rostschicht unter Bildung von Eisensalzen auf. Die Mittel der letzteren Art sind meist mehr oder weniger starke Säuren, die ebenso wie die mechanische Rostentfernung das metallische noch nicht in Rost verwandelte Eisen stark angreifen und für viele Zwecke deshalb nicht in Betracht kommen.The second type of chemical rust removal loosens the rust layer and forms it of iron salts. The remedies of the latter kind are usually more or less strong Acids which, like mechanical rust removal, are not metallic yet strongly attack iron transformed into rust and therefore not in Come into consideration.
Vorliegendes Verfahren geht nun von sehr schwachen anorganischen bzw. organischen Säuren aus, die stark reduzierende Eigenschaften haben und das metallische Eisen praktisch nicht angreifen.The present process is based on very weak inorganic or organic acids, which have strong reducing properties and the metallic Practically no attack on iron.
Legt man einen Rostgegenstand in eine wässerige Lösung von phosphoriger Säure, unterphosphoriger Säure, Ameisensäure oder in eine Mischung dieser Säuren, so fällt der Rost als basische Eisensalze der entsprechenden Säuren je nach Stärke in kürzerer oder längerer Zeit vollkommen ab, ohne daß das dadurch bloßgelegte Metall im geringsten angegriffen wird. Letzteres erhält vielmehr eine schwarze glatte Oberfläche von metallischem Eisen, das durch. Polieren leicht in eine glänzende spiegelnde Metallfläche zu verwandeln ist.If you put a rust object in an aqueous solution of phosphorous Acid, hypophosphorous acid, formic acid or a mixture of these acids, so the rust falls as basic iron salts of the corresponding acids depending on the strength in a shorter or longer time completely, without the exposed metal is attacked in the slightest. Rather, the latter is given a black, smooth surface of metallic iron passing through. Lightly buff into a shiny reflective finish Metal surface is to be transformed.
Beispiel: Man legt den Rostgegenstand in eine wässerige Lösung von ioprozentiger phosphoriger und ioprozentiger Ameisensäure und spült ihn nach dem Abfallen des Rostes mit Wasser ab.Example: You put the rust object in an aqueous solution of 10 percent phosphorous and 10 percent formic acid and rinses it after the The grate falls off with water.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEK83362D DE375426C (en) | 1922-09-12 | 1922-09-12 | Procedure for derusting |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEK83362D DE375426C (en) | 1922-09-12 | 1922-09-12 | Procedure for derusting |
Publications (1)
Publication Number | Publication Date |
---|---|
DE375426C true DE375426C (en) | 1923-05-12 |
Family
ID=7234747
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEK83362D Expired DE375426C (en) | 1922-09-12 | 1922-09-12 | Procedure for derusting |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE375426C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2493327A (en) * | 1946-09-27 | 1950-01-03 | Kelite Products Inc | Aqueous composition for treating iron and steel |
US2793191A (en) * | 1954-04-15 | 1957-05-21 | Du Pont | Corrosion inhibition of monobasic acids |
EP0375167A1 (en) * | 1988-11-29 | 1990-06-27 | BP Chemicals Limited | Cleansing compositions |
-
1922
- 1922-09-12 DE DEK83362D patent/DE375426C/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2493327A (en) * | 1946-09-27 | 1950-01-03 | Kelite Products Inc | Aqueous composition for treating iron and steel |
US2793191A (en) * | 1954-04-15 | 1957-05-21 | Du Pont | Corrosion inhibition of monobasic acids |
EP0375167A1 (en) * | 1988-11-29 | 1990-06-27 | BP Chemicals Limited | Cleansing compositions |
US5034148A (en) * | 1988-11-29 | 1991-07-23 | Bp Chemicals Limited | Cleansing compositions |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE557352C (en) | Process for cleaning objects made of iron and iron alloys | |
DE375426C (en) | Procedure for derusting | |
DE710733C (en) | Process for pickling iron and iron alloys | |
DE1802921A1 (en) | Alkaline cleaners for milk and cream installations | |
DE467307C (en) | Process for descaling metallic objects made of stainless steel | |
DE705213C (en) | Process for the production of a paintable rust removal agent containing thickeners | |
DE493827C (en) | Process for improving the corrosion resistance of fittings made of magnesium alloys | |
DE493743C (en) | Procedure for derusting | |
DE681307C (en) | Rust removal agent | |
AT124710B (en) | Process for treating rolled, in particular wire and bar, material for drawing. | |
DE548315C (en) | Process for the protection of metals and their alloys | |
AT117026B (en) | Process for protecting easily oxidizable metals or metal alloys, in particular magnesium. | |
AT126110B (en) | Process for improving the corrosion resistance of fittings made of magnesium alloys by treatment with bichromates. | |
DE683877C (en) | Weed killers to be used in aqueous solution | |
DE744177C (en) | Process for the cold forming of metal pipes that have been coated with oxide and ignition layers after the previous annealing treatment | |
DE497942C (en) | Process for pickling objects made of iron or its alloys | |
CH140438A (en) | Process for improving the corrosion resistance of fittings made of magnesium alloys. | |
DE1062517B (en) | Agent in paste form for the cold descaling of large-area building sheets | |
DE472859C (en) | Process for descaling metallic objects. in particular made of stainless iron or steel | |
AT115136B (en) | Method for treating nails or the like. | |
DE876939C (en) | Process to improve the adhesion of lacquer and varnish layers on metals | |
DE767820C (en) | Concrete formwork fluid, especially for metallic formwork forms | |
AT159500B (en) | Process for cleaning metal surfaces. | |
DE440986C (en) | Process for polishing metal goods in a barrel | |
DE471172C (en) | Procedure for removing rust on iron parts |