1. Microscopic Inspection
A microscopic examination of each and every piece of hardware provides us the opportunity to identify damage, tenacious soils, burrs, poor workmanship, and other detrimental conditions of the incoming hardware.
We record abnormalities with digital photographs and forward these to our customer to review prior to investing in the precision cleaning process.
Deburring services are often provided at this step per customer requests.
2. Multi-Chemistry, Ultra-Sonic Cleaning:
Precision cleaning processes can include, mechanical scrubs using surfactants to remove cutting fluids, oils, and other tenacious soils.
Micro brushes and mechanical brushes are used to provide a thorough cleaning.
Ultra-sonic baths using surfactants, degreasers, and other high purity solvents, followed by solvent pressure flushing.
Janzen-Wahl distills and purifies many of the solvents used in the cleaning process. This recovery reduces the cost of cleaning with these expensive solvents and reduces the environmental impact of clients’ cleaning requirements.
3. Cleanliness Verification
At Janzen-Wahl, our philosophy is that the first step in verification is the last step in cleaning.
We begin the verification process by flushing hardware with a verification solvent. We continue with subsequent flushes, capturing the effluent for particle counts and non-volatile residue (NVR) analysis.
4. Vacuum Bake
Vacuum baking is the process or a period of time where a part or device is placed in a vacuum chamber and heated. This drives off gases and contamination which can then be removed by a vacuum pump system.
Chambers are pumped using dry scroll technology; no oil-type pumps are allowed in our laboratory.
Ovens are instrumented with calibrated thermocouple vacuum gauges. Our oven chambers are capable of achieving vacuum pressures of 500 milli-torr and better.
5. Final Inspection
Final inspections for our precision cleaning process can be performed using magnification in a class 5 cleanroom using both bright white and long wave ultraviolet light.
Rigorous inspection of hardware and bagging materials assures customers of consistent results, and that the hardware poses no threat to their cleanroom environments.
6. Cleanroom Packaging
Janzen-Wahl uses certified cleanroom materials for packaging. We stock certified clean ultra-low outgassing polyethylene bags and tubing, anti-static orange nylon, and static shielding bags.
Precision cleaned hardware is double bagged in our ISO Class 5 cleanroom.