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Thursday, November 6

  1. page Plating Solution Analysis edited Running an electroplating business Electroplating requires strict Metal Ions in Solution: A go…
    Running an electroplating businessElectroplating requires strict
    Metal Ions in Solution:
    A good method of determining the amount of metal ions in solution is to titrate with EDTA (ethylenediaminetetraacetic acid), using an organic dye as an indicator. The idicator is usually complexometric, meaning that it binds to the metal ions in solution, causing a color change. The EDTA, however, binds more strongly to the metal ions, and will displace the indicator, reverting it back to its non-complexing color. At the point of the color change, the EDTA has bound up all of the metal ions. This is the endpoint of the reaction, and can be used to determine the concentration of metal in the tank solution. Be mindful of the possible presence of other metal ions in solution. If other metals are allowed to interfere, a false high reading could be measured. In order to cut down on this effect, a dilute solution of triethanolamine can be added. In situations where the cadmium content is being titrated, triethanolamine can be used to mask the presence of other metals, such as zinc. The following link explains more in-depth the chemistry of EDTA titrations:Complexometric Titrations
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    reduction reaction:
    I2 + 2e- → 2I-
    oxidation reaction:
    2(S2O3)2-
    reaction:2(S2O3)2- → (S4O6)2-
    combined reaction:
    I2+ 2(S2O3)2- → 2I- + (S4O6)2-
    (view changes)
    9:55 am
  2. page Plating processes edited ... An alkaline cleaning agent or solvent can be used to remove grease and soil from the surface. …
    ...
    An alkaline cleaning agent or solvent can be used to remove grease and soil from the surface. Scale can be removed by chemical means such as pickling, or by mechanical means such as abrasive blasting. After cleaning and rinsing, the part should be examined for absence of loose dirt and oil. If the part is not clean or shows water breaks it should be recleaned.
    The surface is activated by the complete removal of all surface films. Once rendered active, the surface must be kept in this state until it is covered by the metal being deposited.
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    metal finish processes we perform at Multi-Flex Plating Company.processes.
    Anodize
    Sealing of Anodized Aluminum
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    Strip
    Tin
    Zinc
    (view changes)
    9:52 am

Thursday, July 28

  1. 6:08 am

Wednesday, July 27

  1. page Recipes edited ... Ammonium Bifluoride.................................................... 0.5 grams Water......…
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    Ammonium Bifluoride.................................................... 0.5 grams
    Water.......................................................................... 410 mL
    To make pH probe descaling soln (0.1N HCl from ACS HCl);
    To make 1 liter
    ACS Hydrochloric Acid (HCl)......................................... 8.3 mL
    Water.......................................................................... Dilute to 1L
    Remember: "do it like you otta... add the acid to the water!"

    Click here to go back to our home page.
    (view changes)
    1:04 pm

Wednesday, May 4

  1. page Recipes edited ... Water.......................................................................... 50% by volume …
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    Water.......................................................................... 50% by volume
    Any acid will work & of course "do it like you otta... add the acid to the water!"
    Olive Drab Chromate Touch-up Solution;
    To make 500 mL
    Kenvert 11 (acidic solution)........................................... 90 mL
    Ammonium Bifluoride.................................................... 0.5 grams
    Water.......................................................................... 410 mL

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    (view changes)
    10:50 am
  2. page Recipes edited ... Hydrochloric Acid (HCl)................................................. 50% by volume Water.…
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    Hydrochloric Acid (HCl)................................................. 50% by volume
    Water.......................................................................... 50% by volume
    ...
    of course "do it like you otta... add the
    ...
    to the water!water!"
    Click here to go back to our home page.
    (view changes)
    10:44 am

Monday, June 14

  1. page home edited ... Solution Concentration - Maintain metal ion and non-metal chemical content at or near optimum …
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    Solution Concentration - Maintain metal ion and non-metal chemical content at or near optimum levels.
    Impurities In Solution - Cleanliness is essentail to successful plating!
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    Surface - IfluencesInfluences adhesion and
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    texture of a deposit.
    Current Density - Strongly influences the deposition rate, plating adherence, and plating quality.
    Temperature - Changes chemical effectiveness and Influences rate of diffusion.
    (view changes)
    12:19 pm

Monday, March 22

  1. page Basic Analitical Skills edited Under Construction... Although the theory behind each specific solution analysis are found on th…
    Under Construction...
    Although the theory behind each specific solution analysis are found on the Plating Solution Analysis page, there are many basic skills that are necessary to preform those tests. These skills such as using a pipette or operating an electronic device, such as a spectrophotometer, are necessary to have in order to complete the solution analysis.
    Using A Pipette
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    7:15 pm
  2. page Basic Analitical Skills edited ... A burette is a cylindrical glass tube with volume gradients over its entire length and a stopc…
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    A burette is a cylindrical glass tube with volume gradients over its entire length and a stopcock valve at one end. A burette is used to measure the amount of reagent used while titrating. A Burette is used by filling it with an excess of the reagent and allowing it to drain to the zero marker at the top and stopping the flow using the stopcock at the opposite end. Once filled the burette is used to measure the volume of the reagent added to the sample during titration. As burettes measure from the top since they are used to measure liquids dispensed out the bottom. The difference between starting and final volume is the amount dispensed.
    Using A Spectrophotometer
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    of light. This fact makes it easy to calculate the concentration of a chemical by finding its absorbance.
    (view changes)
    7:11 pm
  3. page Basic Analitical Skills edited ... A burette is a cylindrical glass tube with volume gradients over its entire length and a stopc…
    ...
    A burette is a cylindrical glass tube with volume gradients over its entire length and a stopcock valve at one end. A burette is used to measure the amount of reagent used while titrating. A Burette is used by filling it with an excess of the reagent and allowing it to drain to the zero marker at the top and stopping the flow using the stopcock at the opposite end. Once filled the burette is used to measure the volume of the reagent added to the sample during titration. As burettes measure from the top since they are used to measure liquids dispensed out the bottom. The difference between starting and final volume is the amount dispensed.
    Using A Spectrophotometer
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    of light. AllA spectrophotometer is typically used to measure the concentration of chemicals in solution this is possible for two main reasons. First is that all things that
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    that wavelength. Second is that Beer's Law states that the absorbance of light through a material is directly related to the properties of that substance. Most generally is the fact that the concentration of a chemical is inversely proportional to its absorbance of light.
    (view changes)
    7:01 pm

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