Archives of the finishing.com Hotline

Topics/Threads 61000 to 61999

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

• Electroless Plating the Inside of a Large Container

• Nylon 6/6 rubbing on anodized aluminum lubricates it

• Flattening the ends of mild steel tubes leads to corrosion?

• Effects of agricultural lime dust on metal roof

• Stainless Steel Storage Tank absorption risks

• Ventilation requirement for Manganese Phosphate line

• Copper Electroplating Experiment with Salt Bridge

• Type II and Type III on same part

• Nickel striked or struck?

• Black spot observed on electroless nickel plated steel

• Electroless nickel plating process sequence

• How to properly activate white bronze plating?

• Alkaline Anodizing of Aluminum

• Uncoated carbon steel and 96-hour salt spray test

• Changing vacuum conditions in PVD

• Size loss of up to .001" during passivation of stainless steel

• Aluminium Anodizing followed by reverse-anodizing

• Polishing aluminum deposited on glass to 0.2 nm

• Unexpected color change in acid solution for soil digestion

• How can I improve my DIY black oxide coating process?

• Finishing porous brass casting before lacquering

• Body-In-White spec: cleanliness before degreasing

• How to Calculate Current for Electroplating

• Labs say there is no chrome on our 'chrome plated' parts

• Protecting selective areas on precision machined weldments of Large Synoptic Survey Telescope

• What is "IMMUNIZE" finish?

• Best leveling agent for anti-corrosion water-based coating?

• Prepare the steel before galvanizing

• Lead poisoning from machining steel & stainless steel?

• Stains from post-treating galvanizing with tannic acid

• Sintered Iron Part - Gas Nitriding Unsuccessful

• PECVD anti-finger print coating on PVD pieces

• Risks of diluting an evaporated nickel plating solution?

• Mixing Nickel strike with copper sulphate bath for disposal

• Metalized parts turn 'gold' even before topcoat

• How to reduce high zinc content in Socosurf

• Strip aluminium from steel dies without caustic solution

• M.S. recommendation: Material science or Material engineering

• Resurfacing existing wood paneled walk-in refrigerator

• Vulcanizing Rubber (CR) binding to steel for 1939 Buick part

• Anodizing Dye Color Naming conventions? 4A, AEN, 3GL

• Where to buy 7175-T736 aluminum

• Laser cutting removes UV printing from anodized aluminum

• Need e-coating of our skateboard tools

• Coronavirus copper plate door handles

• Black Oxide with Supplemental Coating

• Nickel electroforming with very thin stainless steel foil as mandrel

• Energy savings in high temperature Type II anodizing

• Can we use Cold Rolled Sheet Metal for Hot Dip Galvanizing (batch type)

• Rotating field for electroplating

• Testing Brazes and locating very clean HVAC coils

• Proper Buffer Work Height?

• What is Nickel Fluoride Bath - Dow, British 830,597

• Electrolytic acid works on outside of welded steel tanks, but inside rusts

• Temperature limit for cadmium plated aluminum parts?

• Baffling citric acid passivation bath issue

• Why is chemical conversion coating wiping off with Acetone?

• Need 5RA finish on .180" elbowed hole in 316L

• Motor housing with sharp edges fails salt spray test

• Polishing a Mini Draco for Shiny Gold Plating

• Visual change to finished Thermoplastic PVDF because of post painted heat

• Remove hand sanitiser stains from hot dip galvanised material

• C377 Brass Forging turned silver from Scotch-Brite Polishing

• What maintenance is needed on trivalent chromate bath?

• Can M3 thread plug gauge be used on Nylon 66 plastic part?

• Must aluminum be blasted before ceramic coating?

• Conductivity and anodized Aluminum

• Material of construction for alkaline Zinc Nickel Plating process

• Paint stripper for wood deck that rests on a rubber roof

• Need recommendation for protective adhesive: rhinestones to faux leather

• Lime Away took away the shine on my stainless steel fridge door

• Hardcoat Anodizing Polished vs. Blasted Aluminum

• Primer for liquid metal top coat

• Brush plating & patinating automobile sheet metal

• Facing black marks from grinding anodized aluminium

• Switching from Brush Cadmium plating to Barrel cadmium plating

• Patterns at Tops of Parts in Electroless Nickel Tanks

• Need black anodized aluminum Iphone 7 Repolished

• No service for me from finishing.com

• Kombucha and Stainless Steel

• Plating onto tin substrate

• How to prevent fungus on plastic chromed surface in production

• Chrome plating banned. What will substitute?

• What is this mystery "electroplating over paint" process?

• Pretreatment Steps for Anodizing of AW 2017 Aluminum?

• Manual anodizing versus automation

• Want motorcycle kickstand & centerstand that won't rust

• Galvanizing of very thick plate is silvery and non-adhering

• Sublimation coating removal

• Need zinc-gold plating on stainless steel

• Copper plated aluminum sand casting gets brown dots

• Stainless steel dumbbells: economic corrosion-resistant grade?

• Problem of Brass finish burning off during sintering furnacing

• Protecting Engraved Manganese from Corrosion

• Rack/basket material for Iridite chromate conversion coating

• Cyanide vs. Non-Cyanide Electroless Nickel Stripper

• Plating of Parts Longer than Our Tank

• Avoiding Tank Overflows

• Chrome plating and matte black anodizing

• What to do with dog's head bas relief?

• Type 1100 Aluminum Burns During Anodizing

• What is spec P56011 and P55004?

• Need spare parts for Eidschun Automatic Plating equipment

• Establishing a standard for matte black finish

• Unusual reaction of Bohler K390 steel to phosphoric acid

• Two new polymer-based seals for anodized Aluminum: Non-Hazardous, No metals

• Applications for room-temperature hard anodizing

• Do I have to passivate after mag particle inspection?

• Formulation or Citric or Sulfamic acid pickling solution for 12L14?

• Masking of keyways when anodizing & electroplating

• Pretreatment for ZnTi alloy. 95% Zn, 5% Ti

• Low temperature impact on 304L permeability

• Shot Blast Aluminum Casting for Dark Color

• Plating chrome on a nickel substrate

• Want High Residual Stress in Electroless Nickel

• Peel off in hard chrome plating after chemical additions

• Roughness in Hot Dip Galvanizing Process

• Adding sulfuric acid additions while anodizing

• Annealing mixed metal jewelry (copper & silver)

• Will silver dissolve in cyanide without rectifier current?

• Zincate doesn't stick to aluminum bus bar from some suppliers

• Plating/Coating/Finishing Metal Charms

• Nickel Contamination of Gold Bath without a known source

• Q&A's about 'Memory Wire' in Jewelry

• What finish is on this antique turn signal actuator?

• Is Nickel Strike allowed before Cadmium plating heat treated bearing steel?

• Masking for Silver Plating Inside Hollow Aluminum Cylinders

• Aqua Blasting before Powder Coating

• Building a scintillator. How to get a bright/reflective surface?

• Waste Water Treatment of Silica top coats

• Emissivity value for Cadmium plated steel and Zinc Plated Steel

• Looking for linear grinding/finishing tool practical for non-production use

• Anodizing Appearance Problem on Silkscreened Panels

• PTFE thin film coating of 316L Stainless steel parts exposed to sulfuric acid

• Anodizing seal issue on bead blasted areas

• Paint removal in corners of wood door

• What types of plating can be done in a barrel?

• Copper Plating from an Ammonia Solution

• Flow meters to be used in Tin Electroplating line

• Micropitting issue chromate conversion coating of Aluminum

• How to avoid rust

• Trying to make Nickel Acetate D-I-Y

• Does bronze corrode Cr-Mo-V steel?

• Wastewater: big spike in Carbon Disulfide

• Overview table of plating and its properties

• Anodized Part Absorbs Grease into Oxide Layer Near Edges

• Electroformed Nickel Bellows Annealing Process

• Coating for low electrical resistance, but high corrosion resistance and wear resistance

• Numerous Type II Aluminum Anodizing Defects: White Spots, Missing Color, Ink Stains

• White lines along masked edges when selectively stripping zinc galvanized steel

• How to tint headlight metalizing?

• How to Analyze Total Solids in Rinse Water?

• Powdered metals (Copper) in Los Angeles, CA

• Black oxide over cad plated NAS6604 fasteners?

• Okay to anodize small loads and largely empty racks?

• Pitting in Aluminum Threads after Alodine

• Acid zinc plating is dark grey and black

• Need conductive material that will bond to stainless steel

• Cleaning copper discoloration from baking

• Tin Plated Copper parts black smear/residue

• Ingredients for chrome

• Which pumps & membranes are best for CED bath?

• Dip process for brightening aluminum cookware

• Chromium in my Anodizing Waste?

• Choosing a plastic for nickel plating line installation

• Chrome Plating Steel in a Bath Normally Used for Plating Copper

• How to determine plating defect vs. plastic substrate defect

• Corrosion? on anodized & gold dyed alloy 2024 parts

• Purple type 2 anodizing trouble

• Suitability of Electroless Nickel for very low service temperature?

• Can my jewelry line be vacuum silver plated?

• KTL shielding spot technical term

• Electroless copper vs. Wood's Nickel strike for stainless steel

• Finishing Related Basic English Terminology

• Corrosion/calcification of ladders, boilers, and brains

• Black colorant/dye for liquid buffing compound

• Cathodic Electrophoretic Lacquer -- How to get matte black CED

• Red Rust on Nickel Plating over Aluminum?

• How to polish aluminum steering wheels

• Acid vs. Alkaline Etch before Anodizing or Chem-Filming Aluminum?

• Seeking Anodizing Consultant

• Increase existing GI coating without re-galvanizing

• How durable is the finish on sandblasted aluminum?

• Does Plastlina/modeling clay accelerate corrosion of aluminum?

• Risks of chlorine in degreasing tanks in Pretreatment line in paint shop

• Can sealant surfactants be removed?

• Black oxide solution with copper contamination

• Black spots on parts after received by customer: fretting corrosion?

• Zintec vs. zinc electroplated CRCA steel

• Problems in recovering gold from soil

• Electrochemical etching of Fe Ni Cr AISI steels for "sandblasted" effect

• Caustic Soda Etch Tank Suddenly Causing Intergranular Attack

• What is Chemical Brightening Process Standard

• Need door handles brushed-nickel plated

• Inexpensive In-Process Rust Protection/Plating

• Aluminium Bitumen Paint

• Fiction stories involving plating

• Naming a Finish from its Looks

• Need PTFE (teflon) coating of thousand of pounds of wheel nuts

• Maximum groove depth in nickel plating with diamond cutting

• What is Continuous Gold Plating

• Seeking finishing suggestions on vintage receiver restoration

• Finish on zinc coated steel coil for prefabricated housing

• Soldering issue when using a Silver-bearing Soldering Alloy

• Mixing powder coating colors to get a new color

• Need shotgun barrel blued

• Anodized aluminum is inadvertently scrubbing N2O gas

• Want "Battleworn Nickel" on AR-15 parts

• Require Iridescent Passivation Solution

• Potassium Chloride Shortage for Zinc Plating Is there an alternative?

• Metallic Contaminants in Sulfuric Acid Anodizing Bath

• Chrome-free galvanized pipe gets black spots

• Producing hardened concrete nails

• Can't get proper black color on hardcoat anodizing

• Get zinc out of 5000 lb mold after cooling

• How to "Distress" Chrome Plating

• Wastewater Flow Meter Needed

• White dots on an anodised finish

• Black oxidation layer went off after shooting test

• Inconel 718 turns black during pickling only if heat treated

• Protecting metal tools from corrosion

• Electroforming onto silicone forms

• Help with a knife blade turned black

• Zinc plating problem

• Need to make a silver ring look gold without using gold

• Only one of the parts on the rack Hard Anodizes

• M.O.C. for nitric-sulfuric tank for stripping silver

• Anodizing 0.003" 5052 aluminum?

• White powder on anodized finish

• Powder Coating tiny blades for fishing lures

• Polishing copper and brass

• Penetrant inspection per ASTM E-1417

• Hot-Dip Tinning Problem: Crystals in molten tin tank

• Anodized aluminum has microscopic black dots on its surface

• Looking to refinish my 1950s Chambers cooktop

• Copper remains on welding clamps despite muriatic acid bath

• Chemical conversion coating on top of anodizing

• Sulfuric Acid Anodize: Cl, F, Sulfide Limits

• What happens when one inhales sulfamic acid dust?

• Electroplating without acid pickling

• White patches on new hot dip galvanized poles

• Powdered metal parts rusting after pickling process

• Need Decorative Nickel Plating for Microphone Bodies

• Nitric acid drag-in to dye/seal tank

• Nickel plating plus rhodium as substitute for silver plating

• Strong welding fumes in bathroom

• Aluminum corrosion after strippi\nng the anodizing

• How to measure amount of Gold used and left in the plating bath?

• Convert anodizing line to another process

• Designing a plating setup to plate 2" diameter plastic coins

• Aluminum PVD on PC Temperature Endurance

• Anodizing problem on AA 5052 Alloy

• Acid etch (ammonium bifluoride) solids handling

• GP concertina wire rusts only when sent to some cities

• Q-Panel Envelopes...Where to buy them?

• Electroless nickel plating testing with UAN solution

• Where to get glass coated abrasive paper?

• Linear Positioning Systems for Programmed Hoists

• Black stripe on cleaned and annealed cold rolled coils

• Anodizing A380 vs. A360

• Cleaning the interior of an air compressor tank

• Cloudiness on Type III Anodized Titanium Med Screws

• How to make 0.1N sulfuric acid

• Anodizing a Weldment of Different Aluminum Alloys

• How to sell a Plating company in these environmental times

• Plating a [Electrodeposition of a] Nickel-Chromium Alloy

• Colorful wall-hanging bowls with tie-dye foil look

• Nickel Sulfamate Plating is Peeling from Copper

• Can Magnetic Jigs/Racks be used for Hard Chrome Plating?

• Needed: Plating Company to Chrome Plate to QQ-302B TY I CLASS I

• Suitable finish for polished forged mild steel sculpture?

• "Eurado" metal finish on 1937 radio

• Respirator recommendation for acid copper plating

• Silver Plating of Coin Rings

• Nickel free cold sealing process for anodized aluminum

• Coatings for paper maché coffee cups?

• Electroforming on black kyanite isn't adhering

• Need to reduce Power bill for infrared oven

• Aluminum sticking to zinc coated plates stored in warehouse

• County trying to make me get gas insurance

• Remove sodium metabisulfite from Nickel Plating bath

• Application where both wear-resistance & corrosion-resistance are important

• Need silver retrieved from Silver Sure ion exchange liquid

• What to do with scrap cadmium plated parts?

• Locating a leak in a stainless tank

• Need silver plating equipment and process chemistry

• Antimony in Lead Cathodes for Type 2 sulfuric acid anodizing

• Stainless steel anode baskets for acid electroforming bath?

• Impossible to make Zn-Mg-Al ternary hot-dip galvanized steel pipe?

• Need spring clips fabricated for fender flares

• Weak adhesion of brake lining to Aluminum after Alodine treatment

• Bedliner-like coating on my automobile frame

• Research paper from 1982: Nitric acid vapor test parameters

• Electroless tin on aluminum plus steel problem

• Need US-based finishing for our cabinet hardware business

• Problems in thick nickel electroforming onto PVC

• Repair scratch in black-oxide per MIL-C-13924 Class 1

• Anodizing and electroless nickel on same piece

• Black Marks on AB Black Nickel after Salt Spray

• Is nickel plated cast-iron safe to cook with?

• Stainless Steel Sewage Tank and sulfuric Acid?

• Corrosion on electroplating racks with stainless spring steel contacts

• Sodium Dichromate Seal Tank Liner Materials and a compatible filter

• Nickel plating onto alumina dispersion-strengthened Cu alloy

• Nickel thickness measurement: which electrolyte?

• Etching of steel texture plates for rolling mill with copper sulphate& salt

• Rusting of Hot Dip galvanized steel

• Need to hold surface finish on Zinc Nickel plated parts

• Zirconium Coating Daimler Standard

• Need Tin-cobalt plating

• Poor plating adhesion on Remko (high purity iron) material

• Ideal Sequence for Alkaline Zinc Plating

• Silver brazing flies out of gap between copper surface and nickel plated surface

• Stripping Nickel From Invar

• Galvanic Corrosion Test for Titanium Anodize (AMS 2487)

• Propylene Glycol leak into Sulfuric Anodizing Tank

• Hydrogen embrittlement in zinc plating of auto parts from the 1960's

• Selective Electroless Nickel Plating or Stripping

• Earthing/grounding of parts during paint application

• Our nickel plating on copper & brass suddenly started peeling

• Need Cadmium Plating per NAS672

• 316L Stainless is too spring-y

• Black anodized parts feel like a chalkboard

• Etching Al-Cu PCBs

• Electropolishing of Tungsten Carbide

• Hard Anodize Tank Design

• How to convert synthetic oil perfume to water based perfume

• Coating hot tub parts

• Zinc rich primers in submerged service on steel ships

• We need gold plating consultant

• Electroplating of copper onto sputtered gold

• What is the difference between electrocleaning and electropolishing?

• Electroplating Copper onto PVD/Sputtered Gold Substrate

• HCl immersion time for replating old car parts

• How to prevent corrosion of dully powder coated CRCA panels from acid fumes?

• Reaction between hot aqua regia and sulfur

• Want to learn Geology, Metallurgy, & Fossils