[DOC] [TLE] Chemical CLeaning of Metals - New Zealand Institute of Chemistry [PAR] Typically this is done with caustic soda (NaOH), and results in the removal of all 
polar ... The cleaned metal is now in a highly reactive state, and so it must be 
coated with a ... pumped in, and over half a tonne of iron corrosion product is 
removed. ... Before a plant can begin operation, any protective coatings, 
fabrication and... [DOC] [TLE] In chemistry, neither acid nor alkaline # Quiz # Question - YouTube [PAR] Jun 27, 2016 ... In chemistry, neither acid nor alkaline # Quiz # Question ... Before it's galvanized, 
iron is cleaned with this very caustic acid # Quiz # Questio. [DOC] [TLE] The Galvanizing Process Explained | Environmentally safe ... [PAR] When a coating fails before the end of its expected service life, it is most often 
due to incorrect or inadequate surface preparation. ... Caustic Cleaning. ... Your 
product is then dipped in a dilute solution of hydrochloric acid. ... surface of the 
metal prior to galvanizing and promotes bonding of the zinc to the steel or iron 
surface. [DOC] [TLE] Sodium hydroxide / caustic soda / lye : useful stuff - Practical ... [PAR] May 13, 2008 ... unless it gets in your eyes, a quick wash in a cheap weak acid such as vinegar ... 
Sodium hydroxide will not react with iron or steel, in fact the alkaline ... reduce at 
least some of the rust to iron metal (loose black powder), ... Where ammonia 
really comes into its own is being able to disolve copper, hence its... [DOC] [TLE] Corrosion Control - Federal Aviation Administration [PAR] Many aircraft structures are made of metal, and the .... Cast Iron. Chromium-Iron (
active). Ni-Resist Cast Iron. Type 304 Stainless steel (active). Type 316 Stainless 
... it prior to structural failure is by disassembly and inspection. ... Spilled battery 
acids and caustic cleaning ... corrosion and its control is a very real problem that. [DOC] [TLE] What is Hot-Dip Galvanizing? | South Atlantic LLC | Service ... [PAR] The surface preparation step in the galvanizing process has its own built-in ... for 
galvanizing typically consists of three steps: caustic cleaning, acid pickling, ... 
prior to galvanizing and promotes bonding of the zinc to the steel or iron surface. [DOC] [TLE] Clean Metal: Remove Oxidation or Paint From Metal | Make: [PAR] Dec 18, 2012 ... Rust, the oxidation of iron, takes up far more volume than the metal it ... soda ash 
(1) Used for fabric dyeing and adjusting pH, it's available from craft, ..... The 
electrolytic bath is basic (caustic), like lye, so wear goggles and ... For better 
results, scratch up the paint first, or use a paint remover before treatment. [DOC] [TLE] Slaughterhouse cleaning and sanitation [PAR] Protein *, Water insoluble Alkali soluble Slight acid soluble, Very difficult to ... the 
proteinaceous soil has been exposed to before the cleaning procedure. ... Water 
alone is not a very efficient cleaning agent because of its high surface tension. ... 
It is corrosive to aluminium and galvanized iron, and forms a scale of calcium... [DOC] [TLE] HDG Process | American Galvanizers Association [PAR] The galvanizing process has its own built-in means of quality control because ... 
A hot alkali solution, mild acidic bath, or biological cleaning bath removes 
organic ... heated sulfuric acid or ambient hydrochloric acid removes mill scale 
and iron oxides ... oxides from forming on the surface prior to immersion in the 
molten zinc. [DOC] [TLE] Surface Preparation | American Galvanizers Association [PAR] In order to move the steel parts through the cleaning steps and galvanizing bath, 
... First the steel is immersed in an acid degreasing bath or caustic solution to ... a 
protective coating to prevent any oxidation before entering the galvanizing kettle. 
... might inhibit the reaction of the iron and molten zinc in the galvanizing kettle. [DOC] [TLE] Hot-dip galvanization - Wikipedia [PAR] Hot-dip galvanization is a form of galvanization. It is the process of coating iron 
and steel with a layer of zinc

Question: Before it's galvanized, iron is cleaned with this very caustic acid
Answer: hydrochloric acid