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home Best Technology / Case Studies – Industry Applications / Automated Ultrasonic Citric / Nitric Acid Passivation Equipment for Medical Device and General Parts

Automated Ultrasonic Citric / Nitric Acid Passivation Equipment for Medical Device and General Parts

Application for Medical Device Passivation Case Study

The automated ultrasonic passivation system processes medical device industry parts with precision part cleaning and nitric or citric acid passivation after machining and/or laser mark. The system is able to passivate the following grades of stainless steel: 17-4, 304, 316, various 400 series and the like with a neutral pH alkaline cleaner and Citrisurf 2250. Other stainless steel grades are possible with this system, but the customer has validated these materials.

Video: Automated Ultrasonic Passivation Equipment for Citric or Nitric Acid

Automated Ultrasonic Stainless Steel Passivation System

The automated ultrasonic passivation system consists of a 18 gallon (tank dimensions: 24″ L x 14″ L x 12″ D) ultrasonic process tank and 3-30 gallon storage tanks.

Traditional automated cleaning and passivation systems move the parts from processing tank to processing tank which expose operators to fumes from cleaning and passivation solutions and also dramatically increase the cost of the system because it requires multiple ultrasonic processing tanks and overhead automation.

This automated ultrasonic cleaning machine is a sealed system which moves the liquid solutions from filtered heated storage tanks in and out of the main part processing chamber instead of moving the parts from tank to tank so the operator places dry parts in the process chamber, presses cycle start and then comes back at the end of the process to remove the cleaned, rinsed and dried parts.

Animation of Process Fluid Flow of an Automated Ultrasonic Passivation Equipment

ultrasonic-cleaning-passivation-animation

Since this automated ultrasonic cleaning machine is made for citric or nitric acid passivation, the addition of circulation pumps in the storage that constantly run to aid in inhibiting any possibly organic growth in the tank which the chemistry built in biocide should prevent.  Constantly circulating / mixing citric acid greatly reduces the possibilities of organic over time.

Automated-Passivation-Equipment-Nitric-Acid-Passivation

Industry

Medical device passvation, surgical, and medical instrument

Aerospace parts passivation

General parts cleaning and passivation

Applicable Systems

Ultrasonic Automated Passivation Equipment

Note that systems can be made into any customer desired size with minimal to no custom costs.

Small Ultrasonic Automated Passivation Equipment

Small 3.5 Gallon Automated Ultrasonic Passivation Equipment & Systems

Dual Ultrasonic Automated Passivation System

Dual Automated Passivation Equipment System

The 992 passivation system is very popular in the medical device industry because it is a closed loop, hands off passivation system that can be easily equipment and process validated plus it requires very little operator interaction besides placing dirty parts in the tank and removing clean,dry parts at the end of the cycle.

Video: Automated Customizable 3-in-1 Nitric and Citric Passivation System

Automated Customizable Nitric and Citric Passivation System
Need BOTH nitric AND citric acid passivation? This system can handle it all. This 3-in-1 system offers 3 different automated passivation options:

  1. Nitric acid
  2. Nitric acid with sodium dichromate
  3. Citric acid

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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      • Automatic Parts Washer System with Conveyor
      • Phosphating Lines
      • Oil Removal Systems
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      • Machine Shop Parts Washer for True Oil
      • Automotive Parts Washer System
  • Ultrasonic Cleaning Systems
    • Product Information
      • How Clean is Clean?
      • How Do Ultrasonic Cleaners Work?
    • Products
      • Ultrasonic Benchtop Parts Cleaner
      • Benchtop Ultrasonic Parts Cleaning Multi-Tank Systems
      • Ultrasonic Cleaning Consoles
      • Automated Ultrasonic Parts Cleaning Equipment Wash-Rinse-Dry
      • Large Ultrasonic Cleaner with Agitated Immersion
      • Immersible Ultrasonic Transducers
      • Vapor Degreasers
    • Case Studies
      • Machine Shop Parts Washer for Swiss and CNC Precision Parts
      • Applicable Articles
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    • Product Information
      • What is Passivation? How Does It Work?
      • Nitric vs. Citric Acid Passivation
      • CitriSurf – Citric Acid Passivation
    • Products
      • Benchtop Ultrasonic Passivation Equipment
      • Passivation Wet Bench for Citric / Nitric Acid
      • Ultrasonic Automated Passivation Equipment
      • Agitated Immersion Multi-Tank Passivation Systems
    • Case Studies
      • Automated Ultrasonic Passivation System for Medical Device Parts
      • Cleanroom Space Saving Automated Passivation System
      • Heated Polypropylene Acid Passivation and Rinse Tanks
      • Applicable Articles
  • Electropolishing Equipment
    • Product Information
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      • What is Dry Electropolishing? How Does It Work?
      • Passivation vs. Electropolishing
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      • Large Scale Part Electropolishing Systems
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      • EP System – Open Top Wet Bench with Spray Rinse
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      • What is Alodine / Chem film / Chromate Conversion Coating?
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      • Hex Chrome Phase Out and Alternatives for Conversion Coating
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      • Wet Benches for Electropolishing
      • Cascade Overflow Rinse Tanks
      • Quick Dump Rinse Tank
    • Case Studies
      • Semiconductor Chemical Processing Wet Bench and Fume Hood
  • Specialty & Custom Industrial Process Systems
    • Automated Chemical Neutralization Tank Cart
    • Vapor and Dryfilm PTFE Coating Systems
    • Heated Hot Air Parts Dryer
    • Solvent Recovery Equipment
  • Solvents, Fluids & Chemistries for Precision Cleaning
    • Product Information
      • Why Use a Parts Cleaning Solvent?
      • Solvent Cleaning with 3M Novec Engineered Fluids
      • Thermal Management / Heat Transfer with 3M Fluorinert and Novec Fluids
    • Products
      • 3M Novec Engineered Fluids, Fluorinert Liquids, Solvents & Chemicals
      • Aqueous Cleaning Chemistries
    • Solvent Phase-outs
      • 3M™ Novec™ HFE Engineered Fluids Replacement and PFAS Phase Out
      • nPB Replacement
      • AK225 HCFC-225 Phase Out and Replacement with 3M Novec HFE Engineered Fluids
    • Case Studies
      • 3M Novec 72DA 73DE Solvent Vapor Degreaser For Medical Device Instruments
  • Process Validation Templates
  • Equipment Financing

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