Our proven process emphasizes the importance of quality from start to finish, utilizing advanced Ultrasonic Cleaning Technology and using only Deionized water sources at each step of the cleaning cycle.
From thoroughly pre-cleaning parts to maximize passivation effectiveness, to multiple post passivation rinses for the prevention of water marks, our process is able to improve not only the appearance, but corrosion resistance and longevity of Stainless Steel products for the Medical, Aerospace and High Technology industries we serve.
Benefits of Citric Passivation
- Improves cleanliness by removing surface impurities and contaminants
- Improves the sterilization process for medical equipment
- Increases corrosion resistance
- Increases the stainless steel quality in aerospace and military applications
- Helps improve and extend the product life
What is the Citric Passivation Process?
While passivation occurs naturally on Stainless Steel alloys, this intrinsic passive layer can be compromised by contaminants (dirt, oil, grease) and the presence of free iron particles (microscopic particles that are worn off of the cutting tools and transferred to the surface of the steel) that parts are exposed to while on the shop floor. These non-visible particles prevent the stainless steel from forming a complete passive layer, and can lead to rusting on the surface of the part.
Passivation is a Chemical Cleaning Process that is designed to enhance corrosion resistance and reduce the impact of environmental exposure (such as water or air), by removing the particles of free iron that may have been deposited during the manufacturing process and allowing the Stainless Steel to return to its naturally passive state.
Jaco Machine Works’ Citric Passivation Process Advantages
Our controlled chemistry and detailed recordkeeping allows for consistent and repetitively successful results, while meeting all of the requirements of ASTM A967 and ASTM A380 standards. All of our processing equipment and measuring/testing devices are kept up to date on maintenance and calibration in accordance with ISO9001:2015 and AS9100D standards’ requirements.
Each passivation process is validated using Copper Sulfate testing, and certified with a unique identifier traceable to the inspection and chemistry records specific to that passivation lot.
Here is an example of the Passivation Process Certification we provide our Medical customers.
Jaco Machine Works’ use of Citric Acid in our Passivation processing reflects the company’s commitment to minimizing our environmental impact and promoting best industry practices. Unlike nitric passivation, Citric Passivation offers a number of benefits in addition to being much safer and environmentally friendly:
- Citric acid only removes iron without removing any other elements in the alloy.
- Citric acid does not introduce heavy metals or hazardous waste into the passivation tank solution.
- Citric acid yields excellent results without producing hazardous waste or NOₓ air pollutants.
Does your product require more than citric passivation can provide?
Jaco Machine Works has developed longstanding relationships with a vast network of qualified suppliers and processors to successfully oversee the processing of more advanced and complex passivation, electropolishing, or testing and inspection requirements.