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home Best Technology / Case Studies – Industry Applications / Automated 6-Stage Wash-Rinse-Passivate-Rinse-Rinse-Dry For Aerospace Customer

Automated 6-Stage Wash-Rinse-Passivate-Rinse-Rinse-Dry For Aerospace Customer

Time and time again we hear from customers looking to transition their passivation process in-house.  In most cases the biggest concern cited is not always the cost to have the process performed by an external vendor, but the time.  Between packing, shipping, unpacking, processing, repacking, shipping the parts back and unpacking them again many customers are seeing delays from several days to several weeks as they wait for their parts.

Automated Passivation System

Overhead Exhausting Used for Nitric Acid Passivation Systems

Concerns about cost of the system, learning the process, understanding the chemistry usage and disposal and so on are frequently expressed when companies look at bringing the passivation process in-house.  But the reality is that the process of moving your passivation needs in-house is much simpler than most people expect, and remarkably affordable, too.

In the case of one aerospace and defense manufacturer we worked with recently, the waiting game became unbearable and they had to move the process in-house.  The company needed a robust system that could be fully automated, handle up to 150 pounds per basket of parts, provide monitoring of their various tanks of solutions, AND provide a reasonable return on investment in a relatively short period of time.

Enter the MK36 Six-Stage Passivation Line.

Stage 1: Alkaline Turbo Wash with Agitation

Stage 2: Overflow Rinse with Agitation

Stage 3: Citric Passivation

Stage 4: Overflow Rinse with Agitation

Stage 5: Cascade Rinse with Agitation

Stage 6: Dryer with Dual Adjustable Hot Air Knives

7 Stage Automated Indexing Citric Passivation System

Each stage features a work platform that is 34” x 19” x 16” and can handle up to 150 pounds at a time.  The units feature 90-gallon tanks and the wash includes an oil removal system with “Surface Sweep”.  The units feature platform oscillation during cycle to provide agitation in the wet tanks, and to allow all portions of the parts to pass through the air stream from the air knives in the dryer.  Each of the wet process tanks is also equipped with a vent collar to connect the tank into the building’s HVAC system for ventilation.

 Video Demonstration of Pump Agitation in Wash and Acid Tanks

Agitated Immersion Tank Spray Under Immersion

Stage 5, the Cascade Rinse with Agitation features a constant feed from the customer’s fresh DI source.  In turn, as the tank continually overflows, the stream is fed into Stage 4 freshening that rinse.  Stage 4 in turn overflows into Stage 2 rinse which helps keep that rinse fresh but also serves as a continual neutralization of the alkaline water in Stage 2.  Because Stage 2 sees the greatest amount of dragout from the alkaline detergent in Stage 1, the water will tend to become more alkaline over time.  Similarly, Stage 4 see the greatest dragout from the citric acid in Stage 3 and becomes acidic over time.  This multi-tank overflow across the three rinse tanks allows for a slow, continual freshening of the solution in all three rinse tanks, and allows the acidic build up from Stage 4 to work as a natural neutralizer to the alkaline build up in Stage 2.

A powered conveyor on the input side of the system allows for loading of up to three baskets in queue.  As the system operates it continually moves the baskets from the in-feed conveyor, through each tank and onto a gravity-fed output conveyor that allows the baskets to accumulate until an operator can take them on to the next step in the manufacturing process.

The passivation process tanks are automated with the patented articulated walking beam automation that insures precise process time and minimizes operator exposure to the various chemicals.

Since installing the parts cleaning equipment just a few months ago, the customer has already been pleased that they are exceeding the workflow they had originally planned for the system and it is working flawlessly.  They estimate the system pay-off (cost savings versus price of machine) will take less than three years, and the management team has asked the manufacturing group to start a feasibility study for adding a second system.

 

Latest News & Products from Best Technology

Semi-Automated Inline Citric Passivation Solution with Data Tracking

For one medical device manufacturer, the design of a citric passivation solution faced two major challenges: The manufacturing process required performing a water-break test after cleaning parts, before proceeding to passivation. This meant that they could not use a fully automated passivation solution. The system had to have data tracking for quality control purposes. Semi-Automated […]

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14040 23rd Avenue N.  
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  • Request More Information
  • Industrial Parts Washers
    ✛
    • Agitated Immersion Heated Parts Washers
    • Inline Conveyor Wash-Rinse-Dry Parts Washers
    • Immersion Inline Parts Washer
    • Spray Cabinet Parts Washers
      ✛
      • Front Load Spray Cabinet Parts Washer
      • Top Load Spray Cabinet Industrial Parts Washer
    • Vertical Door Pass Through Parts Washer
    • Rotary Drum Parts Washer
    • Powder Coat Prep Equipment
    • Phosphating Lines
    • Pipe Washing Equipment
  • Precision Cleaning Systems
    ✛
    • Applicable Articles
    • How clean is clean?
    • How Do Ultrasonic Cleaners Work?
    • Ultrasonic Benchtop Parts Cleaner
    • Benchtop Ultrasonic Parts Cleaning Multi-Tank Systems
    • Ultrasonic Cleaning Consoles
    • Automated Ultrasonic Parts Cleaning Equipment Wash-Rinse-Dry
    • Large Scale Automated Precision Aqueous Cleaning for Cellular Manufacturing
    • Agitated Immersion Ultrasonic Parts Washer
    • Machine Shop Parts Washer for Swiss and CNC Precision Parts
    • Immersible Ultrasonic Transducers
    • Vapor Degreasers
  • Passivation Equipment
    ✛
    • Applicable Articles
    • What is Passivation? How Does It Work?
    • Nitric vs. Citric Acid Passivation
    • CitriSurf – Citric Acid Passivation
    • Benchtop Ultrasonic Passivation Equipment
    • Ultrasonic Automated Passivation Equipment
    • Automated Ultrasonic Passivation System for Medical Device Parts
    • Passivation Wet Bench for Citric / Nitric Acid
    • Cleanroom Space Saving Automated Passivation System
    • Heated Polypropylene Acid Passivation and Rinse Tanks
    • Agitated Immersion Multi-Tank Passivation Systems
    • Automated Chemical Neutralization Tank / Cart
  • Electropolishing Equipment
    ✛
    • What is electropolishing? How does electropolishing work?
    • Electropolishing Cycle and Current Calculator
    • What is Dry Electropolishing? How does it work?
    • Passivation vs. Electropolishing
    • Table Top Electropolishing Equipment & Electropolishing Machines
    • Electropolishing Wet Benches
    • Large Scale Part Electropolishing Systems
    • Dry Electropolishing Machines
    • EP System – Open Top Wet Bench with Spray Rinse
  • Surface Finishing Systems
    ✛
    • Alodine Lines
      ✛
      • What is Alodine / Chem film / Chromate Conversion Coating?
      • Alodine Chem Film Tank Line
    • Mass Finishing Machines
      ✛
      • Centrifugal Barrel Finishing Machines
      • Spin Dryers / Chip Wringers
      • Vibratory Bowl Polishers
    • Titanium Anodizing Equipment
  • Wet Benches
    ✛
    • Citric / Nitric Passivation Wet Bench for Stainless Steel & Titanium
    • Electropolishing Equipment in a Wet Bench / Fume Hood
    • Fume Hoods
    • Wet Benches for Semiconductor & FM4910 Applications
    • Quick Dump Rinse Tank
  • Specialty & Custom Industrial Process Systems
    ✛
    • Automated Chemical Neutralization Tank / Cart
    • Vapor and Dryfilm PTFE Coating Systems
    • Heated Hot Air Parts Dryer
    • Solvent Recovery Equipment
  • Precision Cleaning Chemistries, Solvents & Fluids
    ✛
    • Why Use a Parts Cleaning Solvent?
    • 3M Novec Engineered Fluids, Fluorinert Liquids, Solvents & Chemicals
    • Solvent Cleaning with 3M Novec Engineered Fluids
    • Thermal Management / Heat Transfer with 3M Novec and Fluorinert Fluids
    • 3M Novec 72DA 73DE Solvent Vapor Degreaser For Medical Device Instruments
    • Solvent Phase-outs
      ✛
      • AK225 HCFC-225 Phase Out and Replacement with 3M Novec HFE Engineered Fluids
      • Medical Device AK 225 Replacement with 3M Novec Engineered Fluid Solvent
      • nPB Replacement
    • Aqueous Cleaning Chemistries
  • Case Studies
    ✛
    • Industrial Parts Washer Case Studies
    • Part Cleaning Case Studies
    • Passivation Systems Case Studies
    • Part Finishing Equipment Case Studies
    • Precision Cleaning Systems Case Studies
  • Equipment Financing
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