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Preparation: | 1a. Mechanical Prep | ||||
Inorganic Finishing: | |||||
Organic Finishing: | 3b. Powder Coating | ||||
Post-treatments: | |||||
Supporting Issues: | |||||
Non-industrial: | |||||
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0. CORROSION, COMPATIBILITY, CHOOSING A FINISH . . .
59242. What process to use to color a small spring? [Illinois]
(May 16)7897. Galvanic compatibility of aluminum and copper open Q. (May 16)
27167. Dissimilar metal aluminum/304 stainless galvanic corrosion (May 6)
38824. Compatibility of aluminum and brass open Q. (May 6)
3006. Corrosion resistance of tungsten heavy metal alloy (April 25)
59241. Need No Mar Coating for Steel [Minnesota] open Q. (April 18)
26907. Coatings for corrosion protection of fasteners (April 17)
59127. Conductive coatings [Illinois] (March 23)
24429. Galvanic compatibility of Stainless steel bolt vs brass nut (March 22)
45264. Yellow Colored Stud Anchors Bolt (March 22)
59202. How to deposit Stainless Steel on Titanium foil [New Jersey] (March 21)
866. Low-friction surfaces (March 12)
59173. Coating to prevent high temperature discoloration of stainless steel [Denmark] (March 11)
59132. I need an alternative to black hard anodize on 2024 aluminum [California] (February 10)
1. PREPARATION . . .
| i |
1a. MECHANICAL PREP |
19343. 440A Stainless Steel: Laser Marking, Passivation and Rust open Q. (May 17)
14468. Formula for polishing and buffing compounds for stainless steel (May 14)
30763. What does "VDI" mean in surface finish terms? open Q.(May 1)
26515. Brush finishing stainless steel (April 24)
59154. Is this 304SS over polished? [Illinois]
(April 22)44324. Specifications for Glass Bead Blasting (April 8)
5629. Vibratory polishing of stainless steel components
(March 27)44147. Satin finishing of stainless
(March 20)16519. Polishing Inconel Steel (March 19)
50796. Hydrochloric acid pickling vs. shot blasting (March 6)
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1b. PRETREATMENTS |
12028. Pickling of Steel open Q.(May 17)
27078. Electropolishing 304 stainless steel, or alternative to it
(May 17)55090. Salt spray test hours for phosphated panels (May 16)
4980. How to electropolish titanium for medical applications (May 14)
41786. Is passivation required for new boilers open Q.(May 14)
32993. Formulation of pickling paste for stainless steel open Q.(May 14)
2963. Procedure for electropolishing stainless steel (May 13)
7692. Sploches on hypotubes (May 6)
29289. How does Zirconium-based passivation work? open Q.(May 1)
44089. Electropolish and Bead Blast? (May 1)
28702. Severe pitting on stainless steel
open Q.(April 26)59250. Electropolishing threaded bushings [Kansas] (April 23)
16827. Improving the Composition of our Zinc phosphating process open Q.(April 19)
59131. Failed Passivation Stainless Steel (PH Grade): Pickling/Acid Descale Preparation [Illinois] (April 17)
2230. Passivation of 2205 duplex stainless steel (April 17)
3060. How to improving the finish & corrosion resistance of 17-4PH stainless steel(April 15)
14083. Help cleaning stainless steel tanks (April 12)
36052. Low iron content in Zinc Phosphating (April 9)
35344. Zinc Phosphate offgassing temperature open Q.(April 3)
15151. Stainless steel etching (March 28)
51398. Etching Inconel 600 with Ferric Chloride (March 27)
32581. Hot vs. cold phosphating -- differences and advantages open Q.(March 27)
59211. Yellow residue on tank surface after electropolishing it [Canada] open Q. (March 21)
52039. Surface Polishing hydraulic components after Passivation open Q.(March 15)
59178. High Chrome Levels in Zinc Phosphate Sludge [Indiana] (March 15)
12749. Iron Phosphate Treatment Process: more coating weight & more corrosion resistance open Q.(March 15)
32480. Biocompatibility of 302 SS wire parts - passivation issue? (March 12)
13405. How to pickle, clean, passivate, electropolish Hastelloy for ultrahigh purity (March 10)
2629. Problems electropolishing stainless castings (March 8)
59187. Phosphate Free Pretreatment Chemicals [Illinois] (March 7)
477. Problem in Wood's Nickel Strike (March 5)
20075. 7 tank hot phosphating process (March 5)
11562. Phosphating - Shelf Life (February 18)
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1c. MASKING, RACKING, TAPING, PLUGGING, PHOTOSENSITIVE MASKS |
59168. Masking parts for black oxiding [Pennsylvania] (March 28)
59199. Masking for two-tone Micron Gold Plating [New York] open Q. (March 15)
53532. How to eliminate Black marks in zinc plating
(February 11)2. INORGANIC FINISHING PROCESSES . . .
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2a. ANODIZING AND LIGHT METAL TREATMENTS |
43247. Defects in silver plating: blisters, nodules, and pits
open Q. (May 16)11203. Anodise vs Alodine vs zinc chromate (May 16)
15288. Need to add an aluminum bright dip step to our anodizing process (May 14)
047. Alternative to ammonium bi-fluoride to etch aluminum open Q. (May 13)
45421. Black spots in anodized aluminum profile open Q. (May 13)
7041. Etching aluminum to reveal microstructure open Q. (May 9)
21986. Hot seal vs. cold seal for anodizing? open Q. (May 8)
44923. Mil-A-8625 Ty 1 vs Ty 1B open Q. (May 7)
59258. Type III, Class 2, Black Anodize of 2195 Aluminum Alloy - Tips/Techniques? [California] open Q. (May 2)
10820. Salt spray for aluminum anodized (May 1)
23085. Streaking problems in anodizing 6061-T6 extrusions (April 30)
3464. Spalling of sulphuric acid anodizing
open Q. (April 30)22258. Chromic acid anodizing: intro and proactive anticipation of problems (April 26)
46468. Problem bright anodizing 7075-T6 (April 25)
18837. Titanium recast layer/alpha case removal open Q. (April 23)
59248. Minimum substrate thickness required for aluminum to be anodized [Florida] (April 22)
59244. Sealing of hard anodised parts that are subsequently painted [England] open Q. (April 22)
49640. How to degrease aluminum honeycomb cores? open Q. (April 18)
59234. Brite Dip Anodize Washes Off; Matte Anodize Doesn't [Indiana] (April 12)
4589. Anodizing I.D. (internal diameter) of hollow aluminum tubing open Q. (April 11)
31358. Precleaning of Aluminum before Alodine treatment open Q. (April 11)
24066. Importance of nickel acetate in anodize sealing open Q. (April 10)
33304. Anodized alloy 6061 parts came out gold or green instead of clear (April 8)
41531. How to clean anodized parts? (April 3)
52410. What is the average particle size of dissolved aluminium in anodizing solution? open Q. (April 2)
13775. How to Alodine ADC12, 380, Castings, and Secondary Aluminum Alloys (April 1)
13351. Suggested ASF for hardcoat anodizing open Q. (March 27)
5053. Silk screening and anodizing aluminum: Anoprint, Ano-tone, Aluprint, Anofax? (March 26)
41283. Is oxalic anodizing equal to hardcoat anodizing? open Q. (March 20)
27533. Equipment and parameters for hard anodizing open Q. (March 20)
6238. Magnesium anodizing problem
open Q. (March 14)59198. Is it possible to bright dip then chromate conversion coat in lieu of anodizing? [India] open Q. (March 14)
30357. Effect on dimensions of anodizing/hardcoating and stripping & re-anodizing (March 13)
59071. Defects from Titanium Etching Process [New York]
(March 12)56597. Can Alodine/Iridite/Chromating be done with steel inserts already in place? (March 11)
59183. Can Surfactants Be Used in Chem Film and Sodium Dichromate Baths [Florida] open Q. (March 7)
59163. Strange marble defect on anodised coating [Northern Ireland]
(March 7)59079. Dishwasher Safe Hardcoat Chemisty [Michigan] (March 7)
23688. Conversion coating of Dow Metal H open Q. (February 27)
9076. E-Coat Standards? open Q. (February 27)
25680. Need permanent mold release for molds for rubber open Q. (February 26)
2252. Teflon Coating on Aluminum open Q. (February 26)
39559. Anodizing as a base coat/primer (February 25)
13808. Achieving class 3 chromate conversion coatings open Q.(February 22)
27504. What causes large crystals to form in the anodize tank? (February 22)
53279. BAC5845 Paint Wet Adhesion Failures to BSS7225 Type II, Class I
open Q.(February 21)32875. Blotchy MIL-A-8625 open Q.(February 20)
45095. Iron Contamination of sulfuric acid anodizing solution open Q.(February 20)
27037. Coating for aluminum heat sink (February 17)
44929. High temperature black anodize (February 14)
1243. Electropolishing and/or bright dip for aluminum (February 12)
3335. Chromate conversion coating failure on aluminum (February 10)
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2b. ELECTROPLATING and ELECTROFORMING |
41517. Gold Plating Problems with Jewelry, How to make gold plating last longer? PVD? (May 17)
29902. Thinfilm Copper Plating open Q. (May 17)
993. Barrel Plating, using conductive media / ballast / shot (May 13)
1791. Dummy plating copper from nickel sulfamate bath (May 13)
1052. Hard chrome plating books (May 13)
50564. Delayed Blisters in Alkaline Zinc Electroplating (May 10)
2501. Chrome repair of undersize parts (May 10)
44348. Achieving a specified hardness in nickel plating (May 10)
59263. Why would 1018 steel rust and pit after being nickel plated? [New Jersey] (May 8)
59210. Acid Copper Plating over Zinc [North Carolina] (May 8)
12849. Nickel sulfamate electro forming (May 7)
59261. What is in cleaning tank? [Michigan] (May 3)
59225. Zinc Plate with Trivalent Chromate - Red Rust Corrosion [California]
(May 1)24339. High temp nickel coating for carbon steel open Q. (April 26)
44190. Problem related to cyanide addition (April 26)
34821. Gold flash vs. plate (April 26)
46704. Electroformed (nickel sulphamate) record stampers are breaking open Q. (April 25)
5106. Tin plated parts are turning black
open Q. (April 25)59252. Producing a continually diminishing taper of hard chrome finish on gun barrel bores [North Carolina] open Q. (April 25)
59243. Newly chrome plated aluminum bracket is tarnishing [Missouri]
(April 25)59235. What electrode material for palladium brush/pen plating [UK] (April 25)
59233. Protecting chuck from corrosion when doing brush plating on lathe- mounted work [California] (April 22)
59247. Effect of excessive amps per square foot on cadmium plating [Oregon] (April 22)
47757. Alkaline Zinc Plating: haze after yellow passivation (April 19)
38948. Starting in Electroforming (April 19)
33883. Problems in Plating on Aluminum (April 19)
7070. Nickel plating failing 96 hour salt spray test open Q. (April 18)
3778. Problems in Nickel Chrome plating on Zinc Diecast Parts (April 15)
46350. Having trouble barrel plating parts that float (April 15)
53715. Rhodium Plating Problems
(April 11)7051. Iron contaminated Cobalt Hardened Gold Plating Bath (April 10)
2215. Cadmium Plating Thickness Control (April 5)
59139. Stray current in Ni bath [Arizona] (April 5)
44964. Composition of Black Nickel Platingopen Q. (April 5)
677. Plating barrels are getting plated (April 4)
59222. Tin-zinc plating isn't alloyed, but a layer of zinc & a layer of tin [Illinois] (April 2)
30203. Brown spots over gold plated SS partsopen Q. (March 28)
9998. Hydrogen embrittlement failures in cadmium plating(March 26)
48652. Plating zinc onto assembly of stainless steel plus steel
open Q. (March 24)28851. Process of Zinc-Nickel Plating (March 24)
36290. Nickel plating / striking stainless steel (March 22)
1007. Cracks in brush plated copper (March 21)
24316. Yellow tin bronze plating on copper is tarnishing [England] open Q. (March 20 2nd request
59158. Nickel Plating of antique Hot Rolled Steel Entry Doors [New Jersey]
(March 18)43260. Roughness in Nickel Deposit (March 18)
59125. Zinc Nickel plating [India] (March 14)
28863. Problems in cyanide copper plating (March 7)
10089. What's so special about Cadmium Plating? (March 6)
59177. Hard Chrome plating and small holes [Florida] (March 5)
59167. Will larger tanks create a throwing power problem? [Iran] (February 27)
17487. Plating peeling off (February 22)
848. Phosphorized vs. OFHC anodes: Phosphorized okay for cyanide copper plating? open Q. (February 21)
56126. Copper is peeling off of Wood's Nickel strike open Q. (February 21)
59164. Post plated parts rusting [California] (February 21)
24868. Copper plating of aluminum (February 18)
55155. Cyanide bleedout in Silver Plating of Brass Castings (February 18)
11741. Nickel underplating thickness (February 15)
59155. Nickel Plating Carbon Steel for Furnace [California] open Q. (February 15)
1027. Post-plated material vs. pre-plated material (February 15)
24065. Standard salt spray hours for zinc plating (on carbon steel) (February 14)
34107. Zinc-plate appearance problems (white, powdery, rough surface)
open Q. (February 13)28480. Possible bubbles in silver plating open Q. (February 11)
47124. Passive anodes in the copper acid bath (February 11)
42456. Impurities/contamination in Hard Chrome Plating Tank (February 10)
11810. What is black chrome plating? (February 9)
2858. Nikasil nickel-silicon plating, what is it and how is it done? open Q. (February 6)
30306. What kinds of anti-pit and additives for nickel sulfamate electroforming open Q. (February 6)
44071. Successful gold ring rhodium plating procedure (February 5)
2309. Microcracks in hard chrome plating (February 1)
25523. Current density required for chrome plating (February 1)
| i |
2c. ELECTROLESS PLATING, PLATING ON PLASTICS, IMMERSION PLATING |
36483. How to coat/plate Ag/AgCl on ABS plastic for ECG electrodes?open Q. (May 13)
15085. Stopping Electroless Metal plate-out on reaction vessel (May 7)
35342. White patches in Chrome Plating (April 26)
4737. Standards for electroless-nickel platingopen Q. (April 23)
59238. Nicoteff / Electroless Nickel with Teflon [New York] (April 22)
42907. Brown stains on electroless nickel plated materialsopen Q. (April 3)
35542. Causes of defects in plated ABS
(March 19)55050. Electroless Nickel plating over brazed/welded 316 stainless steel
open Q. (March 6)55678. Electroless nickel on copper (March 6)
59176. Electroless nickel plating of fly ash [India] (March 1)
59172. Poor electroless nickel plating appearance near threaded area [Philippines]
(February 26)46403. Palladium-free direct plate technology for plating on plastic? (February 26)
37511. Electroless Nickel Plating of Hardened Shaftsopen Q. (February 12)
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2d. PVD, CVD, ION IMPLANTATION, VACUUM PROCESSES |
24279. Need vacuum coating/metallizing machine/equipmentopen Q. (April 23)
59215. Sputter etching of stainless steel [India] (April 3)
59138. Want Pure Titanium Coating [Oregon] (February 1)
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2e. GALVANIZING, ALUMINIZING, HOT TIN DIPPING |
41571. Zinc Ash / Zinc Waste in Hot-dip Galvanizingopen Q. (May 17)
56867. Mystery Of Spotted Hot Dip Galvanized Finish(May 15)
59265. How to minimize smoke in galvanizing plant [India] (May 14)
40753. Material for Zinc Melting Pot for Galvanizing(April 23)
7666. Hot Dipped Galvanized Coatings: G90 vs G60 (April 16)
22164. Difference between electrogalvanized steel and hot dip galvanized steel (April 15)
57597. Reducing variance in galvanizing coating thickness(March 28)
45975. Stabilizer roll of galvanizing line not rotating when processing thinner gaugesopen Q. (March 27)
56390. Allowable Iron Loss in Galvanizing Kettle (March 27)
59166. Huge shoulders/thickening after hot dip galvanizing [Poland]
(March 18)34714. How to control hot dip galvanized steel production to be shiny or dull
open Q. (March 10)53724. Role of ferric chloride in pickling process (March 8)
54638. Brown stripes on galvanised surface after adding "nickel cakes"
open Q. (March 8)59171. What is the temperature of galvanizing bottom dross [Pennsylvania] (March 4)
38915. Peeling problem on galvanizing surface on steel profile (February 26)
39958. IRON in a HCl pickle tank? (February 26)
54149. How could i reduce and remove zinc dross (February 25)
47096. Black stains on hot dip galvanized surface
(February 25)43365. Hot dip galvanizing flux (February 24)
39907. Steps for hot dip galvanizing open Q. (February 5)
34420. Galvannealed versus Galvanized open Q. (February 1)
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2f. BLACK OXIDE, BLUING, COLORING, PATINATING |
1150. The black oxide process (May 3)
11628. Some Gun Bluing Shop Problems & Solutions
open Q. (April 5)8957. Melonite Q.P.Q. Process open Q. (March 14)
28779. Black coating for 1018 steel that will not scratch (March 13)
8631. Blackening stainless steel problems (February 27)
6405. Why surface is Brown after Black Oxide process; reddish-brown smut
open Q. (February 17)13097. Black Oxide problem (February 4)
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2g. OTHER INORGANIC FINISHING |
12857. Coloring sterling silver for jewelry use (January 22)
34078. Cryogenic metal treatment and surface wear? open Q. (January 22)
51813. Need zinc/aluminum Thermal Spray open Q. (January 3)
3. ORGANIC FINISHING PROCESSES . . .
| i |
3a. ELECTROPAINT PRIMING, AUTOPHORETIC COATINGS |
23047. How to reduce paint thickness in Cathodic Electro Deposition (CED) system? open Q. (April 12)
11694. E-coating -- what is it? open Q. (March 25)
39726. Can CED coatings withstand UV radiation? (February 4)
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3b. POWDER COATING |
15733. Aluminum pretreatment for powder coating open Q. (May 16)
59253. Powder coating that can be repainted without conventional mechanical surface prep? [Tennessee] (May 2)
21382. Powder coating defects: "orange peel" open Q. (April 30)
23337. White rust on powder coated aluminum parts
(April 16)5163. Powder Coating over Zinc Plating Problems (April 5)
51939. Stainless Steel Pretreatments before Powder Coating (March 12)
20391. Inspection of Powder Coatings: methods, standards, criteria (March 11)
24110. Kynar vs. Powder coating open Q. (February 18)
26699. Industry specs for powder coating thickness? (February 4)
59040. Powdercoat Unanswered Questions: self-healing alternative to hex chrome fro aluminum, outgassing of galvanized surfaces [Australia] (February 1)
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3c. LACQUERS, CLEAR COATS, ELECTROPHORETIC TINTING, ANTI-TARNISH |
59270. Goldsmith needs Incralac in Germany or Netherlands for Palindrome Cannon [Germany]
(May 16)3338. How do I stop copper oxidation? open Q.(April 15)
58958. ED Coating on Plastic (April 4)
59153. Cataphoretic Paint vs. Electrophoretic Paint [India] (February 13)
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3d. PAINTING, ADHESIVES AND OTHER ORGANIC COATINGS |
46505. Sublimation coating formula open Q. (May 17)
59262. Vinyl plastisol adhesion (to ED) at low temperature baking [Iran] open Q. (May 15)2nd Request
11012. Paint adhesion problem (May 13)
38806. Where to buy THF by Dupont? open Q. (May 7)
32352. Coating peel off / high enamel rating on 3 piece cans (603) open Q. (May 1)
26015. How is PVDF coating done open Q. (April 25)
39660. Mixing Practice and Induction Time for 2-component Paints open Q. (April 12)
28089. Epoxy bleed out problem open Q. (April 2)
15969. Metal Coloring Using Solvent Dyes (April 2)
59194. Photo resist peel off at the edge of wafer [Singapore] open Q. (March 11)
57863. Primer failed dry tape adhesion test open Q. (February 19)
702. Replacement Alternatives for Zinc Chromate Paint (February 15)
4. POST-TREATMENTS
| i |
4a. CHEMICAL POST-TREATMENTS |
59048. Electroless Coloring of Brass Pins [Australia] (November 14)
53829. How to do phosphating on Cadmium and Zinc open Q. (November 9)
| i |
4b. BAKING AND NON-CHEMICAL POST-TREATMENTS: |
46866. Asked for Clear zinc plating but got Blue open Q. (April 5)
59169. Hydrogen embrittlement of INCO 718 by silver plating possible? [Germany] (March 11)
| i |
4c. STRIPPING, REWORKS, ETC. |
21339. Stripping nickel and copper from aluminum open Q. (May 17)
32385. Stripping off silver plate from pewter open Q. (April 8)
32596. Stripping PVD titanium coatings open Q. (April 2)
28753. Stripping Tungsten Carbide thermal spray coatings from 300M steel (February 6)
5. SUPPORTING ISSUES
| i |
5a. ANALYSIS, LAB TECHNIQUE, Q.A. |
606. Chloride contamination in anodizing (May 9)
4842. Simple Test for Passivated Stainless Steel open Q. (May 1)
31926. When do you water-break test for cleanliness? (April 30)
43383. Preparing cross section for verifying plating thickness open Q. (April 26)
33499. Chromium Analysis using AAS Technique (April 23)
873. Hard chrome plating thickness measurement open Q. (April 18)
24697. Analysis of Sulphuric Acid open Q. (April 17)
10643. How to analyze the acid level (HCl) in Ferric Chloride Solution open Q. (April 12)
10836. Mercury Poisoning from thermometers (April 9)
52872. Measurement of Anodizing Thickness; Best Testers and Methods (March 18)
5218. Test Standards For Characterizing Release Coatings on Metal Surfaces open Q. (March 14)
59193. Analysis for metal ions in fruit juices [Philippines] (March 12)
9462. Hydrofluoric acid vs. ammonium-bifluoride (March 5)
25628. Best way to measure chrome plating hardness open Q. (February 12)
847. Coating thickness device (February 12)
25240. Adhesion test for chrome plated towel warmers (February 7)
59134. Problems with determination of lead in 90:10 Tin lead Solution [UK] (February 1)
| i |
5b. WASTE & WASTEWATER TREATMENT, POLLUTION CONTROL |
36722. Recovery of chromium from plating effluent and sludge (May 9)
2632. Handling cadmium plated parts (May 3)
51446. Ferric chloride or sulphate vs. ferrous chloride/sulphate (April 29)
12215. Change Hexavalent to trivalent chrome at high pH using sodium metabisulfite? open Q. (April 22)
59219. Is nanofiltration a viable option for phosphoric acid recovery [Colorado] (April 3)
34307. Deionized vs. distilled water open Q. (March 28)
59103. What can be made from SODIUM BISULPHATE (a byproduct of CHROMIC ACID manufacturing) [India] (March 19)
39370. Zinc removal from wastewater (February 15)
| i |
5c. SAFETY ISSUES, EMISSIONS, TOXICITY |
58994. Handling dangers of yellow zinc plated hardware [Maryland] (October 24)
| i |
5d. PLANT & PROCESS ENGINEERING, CONSTRUCTION |
38940. Heating methods for nitric acid passivation solution open Q. (May 15)
3354. Stainless steel corrosion by chloride ions? (April 26)
30069. How to start your own Chrome Plating shop (April 23)
32320. Problems in PVC & PVDF piping systems for sodium hypochlorite (bleach) (April 12)
32578. Chrome plating mist /fume control: PFOS, fume suppressants, surface tension reducers (April 5)
58425. How to do Tin Plating on Copper Lugs? (April 4)
59218. Material to be used for lab tables and interior partitions [India] (April 2)
59201. Corrosion Resistance to mid-strength Sulphuric Acid [Canada] (April 2)
45941. Why no Titanium danglers? open Q. (March 21)
59205. Best Wastewater Treatment for Alkaline Zinc Nickel Plating (March 21)
38265. Why must Copper Bus Bar be Tin Plated? (March 15)
59186. Solution will solidify if agitation fails. What to do. [Missouri] (March 12)
59192. How can I safely powder small quantities of zinc lead tin alloy. [New York] open Q. (March 11)
32871. Fiberglass electrolytic cell open Q. (March 11)
19523. Paint detackification odor open Q. (March 11)
59111. Need blueprints for building a caustic soda tank for stripping parts [Pennsylvania] (March 7)
2995. Help for chilling plant for anodising open Q. (February 17)
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5e. QUESTIONS ABOUT SOFTWARE, SPECS, BOOKS, INDUSTRY STATISTICS, ETC. |
9017. Hard wear surface for 17-4 PH stainless steel, or wear coatings for it open Q. (May 16)
54101. QQ-Z-325 vs. ASTM-B633 (April 29)
35197. What is the meaning of CM2 in the electroplate spec Ep-Fe/Zn8/CM2 (April 19)
46044. MIL-C-5541 aka MIL-DTL-5541 specification questions open Q. (March 21)
12211. Thread dimensions after plating open Q. (February 24)
23834. Nital Etch Hydrogen Embrittlement Relief Needed? open Q. (February 21)
59137. Difference between Electroplated Nickel to BS3382 vs. BS1224 [UK] (February 5)
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5f. WORLD WIDE WORD OF THE WEEK |
59203. Level 2 layer of passivation [India] (March 15)
47351. Free and total acidity in phosphating vs. salt spray performance (March 15)
59012. What does "HR screw HM20" mean? [Singapore] open Q. (March 4)
44029. Analysis of metals & acids in Electropolishing Baths for stainless steel open Q. (March 4)
59165. Red Rust Rating 6 or better, white Rust 2 or better [Michigan] (February 24)
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5g. CHROMATE REPLACEMENT & THE EUROPEAN END-OF-LIFE DIRECTIVE; Cd, Ni, Pb, Cr REPLACEMENTS. |
24403. Yellow Trivalent chrome doesn't match Hexavalent
(April 29)59240. Trivalent Plating turns pink when insert molded with phenolic plastic
[Illinois] (April 24)45405. Corrosion Protection Alternatives Free of Hexavalent Chromium (March 7)
14735. Specs for Chromate/Zinc Coatings (March 5)
40879. Nickel Plating and RoHS limits on lead (February 21)
| i |
5h. MOSTLY METALLURGY |
47613. Nickel chrome plating cracks during torque test of screw driver (April 15)
59214. Can this iron material be used in a structural application? [India] (March 26)
59213. How to heat treat metal to a black or yellow color [Sweden] open Q. (March 25)
59195. ASTM heat treatment conditions vs. European Norm conditions [Mexico]open Q. (March 13)
37105. Linear indications on 4340 Steel open Q. (March 13)
59170. Thermal Spray Aluminium Coating [India] (February 28)
59148. What aluminum alloy is equivalent to R.R. 56? [Florida] (February 14)
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6a. ARTISTS, HOBBYISTS, CAR BUFFS, HOME OWNERS, ETC. |
34017. How to do Gold Plating of Vinyl Records
(May 17)6354. What makes up silver plating solution? open Q. (May 10)
38381. Refinishing, painting, or powder coating fireplace screen
(May 10)40345. How to remove chrome plating peeling off of rims! open Q. (May 9)
34938. Effects of muriatic acid on galvanized finish
(May 8)15155. Creating a patina on pewter
open Q. (May 7)34058. How do Copper Pennies Kill Bacteria? (May 6)
59256. What is this brownish gold finish on glove box latch? [Arizona]
open Q. (May 6)19211. Copper-plating of leaves (May 3)
59257. Plating compatibility nickel plating over tin [Pennsylvania] (May 2)
42765. Confused about "acid test" for silver and other precious metals
(May 2)16875. Avoiding RV electrolysis damage (April 16)
59236. Clutch cover preparation for chroming [Nebraska] open Q. (April 15)
30479. Brass finish sink has a white film on it ... electrolysis?
(April 9)12103. Parkerizing / Phosphating of gun parts (April 9)
59208. Etching or blasting benday dot pattern onto mirror polished stainless steel [California] (April 9)
59223. Rivets for denim [Florida] (April 5)
13393. Preparing sea shells for crafts or display (April 2)
33281. Chrome plating a bumper with lead filler? Is brazing better? (March 22)
59209. Creating patina on vintage metal seam roofing [Texas]
(March 21)59206. Anodizing aluminum with sodium bisulfate instead of sulfuric acid [Pennsylvania] (March 20)
24349. Refinishing old M3 commando knife (March 19)
59185. Spraying over/repairing UV coated cabinets [California] open Q. (March 7)
59174. Will EDTA attack Stainless? [North East USA] (March 4)
59118. Krauser ABS Pannier bag refinishing [UK]
(March 1)12362. Coating tables and bartops with thick clear pourable plastic (February 27)
6944. Finishing stainless steel golf club heads
(February 25)59159. How to fix a horizontal hairline crack outside of toilet bowl vitreous china [South Carolina] (February 25)
59143. How to purchase a wedding ring for a Levite [Missouri]
(February 25)59107. Backyard hot dip galvanizing [Connecticut] (February 25)
59046. Possible to use electrically charged metal plates to clear wine before bottling? [New York] (February 25)
27702. Silver corrosion by zinc based additives in lubricants (February 25)
24856. Hobbyist aluminum anodizing (February 25)
16362. Cleaning of Brass Plated Bed
(February 24)15649. Heat treating steel for color effects (February 24)
1029. How to metallize and electroplate fiberglass (February 24)
59144. Can't Get Rust To Form On Forging [North Carolina]
(February 15)39490. How to paint or "touch up" fake brass faucets? (February 13)
| i |
6b. RESEARCH, THESIS TOPICS, UNIVERSITY & POST-GRAD STUDENTS |
37569. Removing nickel from FCC Catalyst open Q. (May 16)
478. Palladium Plating of Lead Frames open Q. (May 16)
59267. Ion Plating vs. Anodizing. [Brasil] (May 10)
6368. Recycling of Aluminum Etch Solution open Q. (May 6)
59090. Electroless Whitening Process for Aluminium [India] (April 29)
59254. Modern Vehicle Brightware Trim [England] (April 26)
26613. Extracting silver from silver nitrate solution (April 15)
59181. 3D Printing from Electrodeposition/Electroplating? [Canada]
(April 8)59147. Extraction with Benzene [India] (March 28)
59142. Leaching gold [Israel] (March 28)
50375. What is proper Rhodium Plating Thickness and how to measure it? open Q. (March 27)
35405. Copper/Aluminum interaction open Q. (March 27)
8792. Kelite Building and Ghost Hunters (March 26)
58833. Can an electroless plating bath be used to generate hydrogen for production of electricity (March 21)
59184. Making hand tools from metal coated 3D printed plastic [Minnesota] (March 7)
59149. Nickel Black plating using pH 8-9 Nickel plating bath [Michigan] open Q. (February 11)
| i |
6c. K-12 SCIENCE PROJECTS, GRAMMAR & HIGH SCHOOL STUDENT QUESTIONS |
21478. Acid + Carbonate = what reaction? (February 6)
31790. What chemical reaction happens when you put copper into silver nitrate?
(January 11)58948. Why does the log cabin door feel warm, but the brass handle feels cold? [Guernsey, Channel Islands]
(November 26)