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Topics/Threads 55000 to 55999

The finishing.com Hotline includes more than 60,000 Shop Problems, Q&A's and RFQs about metal finishing. This page is an archive of a thousand of those discussions. You may prefer to start at our Home page, view the most recent threads, or search the site.

55000. Zinc dichromate hydrogen embrittlement
55001. Application requirement of Nickel vs Nickel-Chromium plating
55002. Will chlorine dosing hurt stainless steel heat exchanger?
55003. Why does nitric acid corrode nickel faster than sulfuric acid?
55004. Acceptance of Stainless Steel SS304 in Pharmaceutical Industry?
55007. New at nickel plating, please help!
55008. Using galvanized metal to make jewelry
55010. Dip dyes for solvent lacquer
55013. How to clean aluminium hollow rivets
55019. Selectively stripping hard anodize
55020. Paint adhesion on chrome plated plastic part
55021. Is galvanic reaction casing powder coat to bubble on alum parts
55023. Stannate ion in tin plating bath
55024. Need To Design A Simple Phosphating System for Machine Shop
55028. Solder removal from PC boards
55030. Problematic Rinsing
55031. How to evaluate the surface of plated coating after CASS test?
55032. How can we minimize galvanize coating thickness
55033. Effects of MIL-DTL-5541, Type2, Class1A on Pressed In Captive Hardware
55034. Zinc plating case hardened steel
55036. How to pit and darken a 420J stainless steel sword?
55038. How frequently must pharmaceutical equipment be re-passivated?
55039. Standard Tests for silver plating on copper
55040. Top coat for oak table
55042. Activation treatment for nickel barrier coating
55047. Medicines and food supplements for plating and plasma shop workers
55048. Reduction of Hexavalent Chromium to Trivalent by bubbling air
55050. Electroless Nickel plating over 316 stainless
55051. Function of stabilizer in Electroless Nickel Plating
55052. Reworking rust dots on zinc plated product
55053. Zinc plating an assembly that has stainless pems
55054. Problems electroplating silver onto copper bus bar
55055. Must parts be rack plated for RoHS compliance?
55057. Uniformity problems in vertical aluminium anodizing
55058. Spots in the anodic film
55060. Are dummy plates useful for removing copper from an electropolishing bath?
55061. Can we check for clear chromate by yellow chromating?
55064. What water to use in Sulfamate Nickel plating bath?
55065. Aqueous spectrophotometric determination of gold with rhodamine B and surfactant
55066. What tools to use to find thickness and hardness of hard chrome plating?
55067. Analytical procedure for tartaric-sulfuric acid anodizing
55068. Stripping hard anodising without dimensional change?
55069. pH is rising in Electrophoretic solution
55070. Hard anodising and seal anodising
55071. Coating aluminum for corrosion resistance and wear resistance?
55072. How to measure copper plating thickness on steel
55073. How to make Nickel Sulfamate metal powder
55074. Scrubber design
55075. Peeled Off on hard chrome tip
55076. Aluminium alloy 6061 is bead blasted but oxidizes during shipping
55077. How to repair a marred surface on my laminate counter top
55078. Effect of voltage on composition of plated material
55079. Safety of removing Rust Stains with Ammonium Bifluoride
55080. Hard Anodize - temperature - Pore density question
55083. Industrial electrolytic rust removal process
55084. Dull, non-adherent 'patches' from acid copper electrolyte
55085. Sulfuric acid storage tank corrosion
55086. Possible Dead Fish from Copper sulphate
55088. How does bending affect corrosion of a steel nail?
55089. Welding on titanium grade 3 seal shaft
55093. Best way to mask off parts while bluing steel
55095. One year old and corroding totally away
55099. Finishing Shop won't warranty powdercoat finish if applied over hot dip galvanized
55101. Electroforming on Wax?
55102. Strength comparison between copper and brass studs
55103. MIL-DTL-5541 Type I (hex-chrome) vs, Type II (TCP) issue
55104. High Build up Electroless Nickel Plating (without pits?)
55105. Nickel strike before copper coating steel components?
55106. Is sulfuric acid pickling okay for hardened parts
55107. Zinc bond strength: plating vs. galvanizing
55109. Method for adhesion between aluminum foil and polyester/epoxy resin
55110. Chromium plating of carbon fibre
55111. ASTM B633 specification vs. ASTM B663
55112. Unexplained fluctuations in ORP values for chromium reduction
55114. Importance of sand blasting in metallising
55115. Will Brass in Fashion Apparel Stain the Clothing?
55116. Using galvanized tin for a small bathroom ceiling
55117. Leaching of jewelry polishing dust using thiourea
55119. Nitric acid analysis in chromating solution
55120. How to calculate proper painting thickness for corrosion protection
55121. Chrome Painting Finish
55122. Inserting self clinching fasteners in anodized parts without hardcoat cracking?
55123. Is salt spray test applicable for chemically blackened parts?
55126. Testing silver plated copper
55129. How to improve saw grind test results for plated ABS?
55131. How to ensure best chroming for silencers (2 wheelers)
55132. Surface treatment of 6061 that has won't affect the flatness of 1 um
55133. Finishing aluminum for use as a pneumatic cylinder
55135. Wet micro-blasting process for CRES
55136. Need economical coating/plating to pass 1000 hour salt spray test
55137. How to prepare ABS plastic for painting
55138. Looking for 5" chrome plated steel round tubing 10- 12 ft in length
55140. Zinc coating thickness that can resist 500 Hours Salt Spray Test
55141. Gold finishing process for polyresin decoration items
55142. Salt water dip test for rusting
55143. Acceptable finish on Hot-Dip Galvanized (and Centrifugally Spun) Parts?
55144. How to do plating on stainless steel, and where can I buy the product?
55145. Bath control for chemical milling of Ti-3Al-2,5V
55146. Corrosion resistance of Nickel Plating on CRCA vs. 304 Stainless Steel
55147. Compounds in Black Oxide metal blackening solutions
55148. Layers on top of the core of 92.5% silver jewelry
55149. How to remove polish residue on stainless steel
55150. Measuring zinc nickel plating thickness when electroless nickel is below it
55151. Oxalic acid for stains on vinyl pool liner
55153. Copper backsplash is tarnishing
55154. Hot Black Oxide Finish is purple, and wipes off
55155. Cyanide bleed-out in Silver Plating of Brass Castings
55156. Cadmium Plating on Aluminum Bronze Bushings
55159. Help with antique galvanized bathtub restoration
55160. Jewelry "immersion plating" question
55161. How to detect possible intergranular corrosion after pickling of Incoloy 800?
55162. Rhodium plater is not ot achieving proper cleaning
55163. Colour variation with trivalent dips after zinc plating
55165. Suggestions on polishing exterior of stainless steel tanks in a factory
55166. Black Spots on Nickel-Plated Brass
55167. Need hydrophobic coating for glass
55170. Plating Stainless Steel for Solderability
55172. Bond Coating for Metal Spray
55173. Can using Porous Pots Increase sulphates in Chrome Plating?
55174. Anode material for nickel brush plating
55175. Stripping titanium from stainless steel
55178. Electrolyte titration questions for copper and chrome plating
55179. Why is molybdenum and nickel aluminide chosen as bond coat for twin wire spray metallising
55182. Using Stainless Steel as an electrical ground
55183. Chlorine effect from pool on Aluminium Screens
55184. How to do silvering of glass with a gradient
55185. Use of cast iron borings/turnings in sand blasting
55187. The better process for tin coating on copper wire
55188. Trying to recover gold but the orange precipitate explodes as I try to melt it?
55189. Nickel Plating on ABS Plastic
55191. Details about 4 tank process
55192. Alkaline Zinc Nickel plating process
55195. How to make copper plated aluminum wire
55196. Plating onto tungsten carbide
55199. Titanium Coloring Question for wedding rings
55200. Method to detect detrimental materials on surface of chromium nickel alloy tubing
55201. Electroless Silver Plating on rhinestones
55202. Silver Plate Surface Contamination
55203. Need Ra 3.2 finish on Delrin
55209. Removing chromate passivation from electroplated copper foil
55210. Need more information on nickel electroforming
55212. Is there an alternative to Bright Dip Anodizing that is as good as but, more environmentally friendly?
55214. Silver Cyanide, Black powdery deposits in Extreme Low Current Density Areas
55215. Thin Dense Chrome on Steel - 52100
55218. What type of sealant will maintain maximum hardness of hard anodize?
55220. How does a penny react in diet 7up?
55221. Why Nickel Electroplate has several times the yield strength of annealed nickel
55222. Mirror finishing galvanized (galvannealed) steel
55223. What is Mil-C-5541 Type 1A "PS 249"?
55225. Black dot on zinc plating
55226. Organic Contamination in Nickel Sulfamate Plating Bath
55227. Is SS304 okay for pharmaceutical manufacturing?
55230. Gadolinium contamination from old brick factory
55231. Stop copper from going green but retain tarnished look
55234. What is the electrolyte for making black marks on stainless steel?
55235. Zinc Plating with Black Passivation comes off during handling
55236. Dry Lube Application and Thickness for Hard-coated Aluminum
55237. Clear Coat Corrosion Protection of Aluminum Tread Plate
55238. Masking Thread Holes on Aluminum Extrusion to be Black Anodized
55239. Inexpensive black color coat on fasteners
55240. Instrument for checking phosphate coating weights
55243. Fatigue Life of ASTM A228 Music Wire Tension Springs Near Elastic Limit
55244. Formal name for mixture
55245. Problems with plating 17-4 inner diameter
55246. Process of stripping metal plated plastics
55249. Babbitt plating on aluminium alloy
55250. Asking about heat bearing ability after phosphating a job
55252. How to separate cation resin from anion in a mixed bed
55253. How can I best rustproof forged steel gates prior to painting ?
55254. Anodising a 4 foot dia. Aluminium Ring
55255. Straight ammonium chloride solution as pre-flux
55257. Can I anneal mild steel to use in electromagnet instead of ductile iron?
55259. Is there any alternate name for ASH CHROME and meaning
55260. Using zinc and aluminium wire spray for preventing corrosion in steel structure from acid fumes
55261. Salt Spray vs Humidity
55262. Stripping Molybdenum Disulfide Coating for heat treating
55263. The best solution for blackening polished nickel
55264. E-coat and Hydrogen Embrittlement
55265. Soft Electroless Nickel
55266. What vapors cause red rust in zinc electroplate?
55267. Thickness problem in alkaline zinc plating
55268. Aluminum electronics enclosures mounted on steel in a moist marine atmosphere
55269. Casting ancient Greek bronze
55271. Chemistry-based steel polishing to replace buffing
55272. Nitride finish on hydraulic cylinder rod
55273. How do I dispose of 5 gals plastic container of Lectronic 1003-S Make-up.
55274. Electropolishing recipe for stainless steel
55275. What is the sodium doing in my copper plating experiment?
55276. Help with my copper kitchen table which discolors with every spill
55277. When to Choose Anodize, Chromate, or (Maybe) No Finish for Aluminum
55278. Can HCl vapor be used for pickling?
55280. Cooling system for an electrolytic bath of 49% HF and 96% sulfuric acid
55281. Hard Chrome Plating of Pistol Bore
55282. Embrittlement of grade 10.9 hot-dip galvanized fasteners
55285. Could chrome cause a health issue on a plated tobacco pipe?
55286. Chrome activation
55287. Recovering silver from old resin filled sterling items
55288. Paint for concrete floor
55289. Cadmium plating low hydrogen embrittlement
55290. Cost Implications of Specifying Hard Coat Anodized Finish
55294. A penn question silly :-)
55295. Aluminum Motorcycle Frame Cleaning: best product / method is?
55296. Metallising of oil expeller worm flights for improving life
55297. pH resistance of chrome plated rollers
55298. Nickel plating vs. chrome; hex vs. tri
55300. Alpha case removal Process
55301. Anodizing Aluminium LM24, A1060 -- is it possible?
55302. Same spec but two different anodizing finishes
55303. Anti galling processes for stainless steel Medical Devices
55304. Electro polish, Passivation in Nitric Acid, Electroless nickel plating
55306. Reflectivity data on stainless steel roofs
55307. Accepted method for checking thickness of pure tin plating
55308. Kynar Paint as an isolator?
55309. E-coat issues when painting welded zinc coated steel
55310. Why the chromate conversion failure in 168 hrs salt spray
55311. Laser marking using shielding gas (like during welding)
55312. Finishing type 304 stainless steel for food use
55313. Heat treated 420 stainless steel passivation failure causing severe black corrosion.
55316. Single crystal stainless steel
55317. How to increase nitric acid from 60% to 68%
55319. Mach-1 Mustang wants a new start
55320. Why did my gold mounting turn black
55321. High oxygen content in city water and blueish tint to laundry and 1 tub
55322. Testing for iron concentration of passivation bath IAW AMS 2700
55323. Cissing problem in powder coating
55324. Plating Standards to Prevent Tarnishing on Gold-Plated Silver and Brass
55325. Accidental etching of cobalt based alloy while chrome plating
55326. Problem with leveling bright nickel bath
55327. Black spots in cyanide copper plating
55328. Phosphating for rusty parts (rust observed in 3 days) for rework
55330. Seaside corrosion of wrought iron
55332. 24k Gold plating on plastic PlayStation 3
55333. Powdercoated finish on outdoor lighting is chalking and fading
55334. Acid Tin Plating - is pretreatment of Nickel under layer necessary?
55335. Welding tubing and color anodizing it without the weld marks showing
55336. Plaforization - What is it really?
55337. Minimal build thickness brown anti corrosion coating on steel
55340. Need to remove stones from 800 watches
55341. Safe to weld or cut CARC coated materials?
55342. Tin plating turns black after soldering
55344. Is hexavalent chrome still hex chrome after it is plated on a part?
55345. Black oxide on electroless nickel plate
55349. Want cadmium plating setup
55350. Blue or yellow passivation better after Zinc plating?
55351. Chrome plating compliance issues. What needs an MSDS and what does not?
55352. Maximum probable concentration of HCl in waste
55353. Acid Cracking of Nickel Complexes
55354. Galvanising electroplated steel
55355. Unable to electroplate copper on EN Nickel
55356. What is the black dip we are applying to our zinc plated fasteners?
55357. Correcting Excessive Hardcoat Anodize Coating
55358. How do I remove epoxy from ivory
55359. Want Sticky Patina for Larger Objects
55361. Any health issues with the vinegar
55969. RoHS compliance of hexavalent chrome plating
55970. Brass-tone Clear Coat?
55971. Alternative zinc finishes for sheet metal
55972. Black oxide problem after annealing
55973. Possible to get uniform thickness over the component in zinc plating?
55974. Au (gold plating) thickness problem
55975. Converting from hexavalent passivation acid zinc plating to trivalent alkaline zinc
55976. Cadmium plating on tungsten
55978. Poor paint adhesion over chromic acid anodizing
55979. Ceramic coating on pump shaft sleeve
55981. How do I paint Brass Cane Handles?
55983. Plating Palladium from Palladium Nitrate Acid Solution
55986. Salt spray test before or after assembly?
55988. Pump shaft material for water application
55989. Need cold phosphating process
55992. Heat tolerance of black chrome plating?
55993. Producing tri chrome from chromic acid
55994. Kindly elaborate effluent treatment for yellow aluminium chromate solutions
55995. Stripping Aluminum Coating
55996. Acid as Primer on Galvanized Surface?
55997. Galvanizing - Dust Collector for Kettle - Oily & Wet
55998. Best plating for mild steel semi-trailer parts?