What Is Precision Material Removal Tool (PMRS)?
The PMRS is an integrated system designed to effectively and quickly remove conformal coatings that were applied to electronic devices protecting them from various forms of contamination. Conformal coatings must be removed in order to permit repair, rework and test or Reverse Engineering PCB boards. The PMRS is a tool designed to complement ScanCAD’s diverse family of Reverse Engineering products.
One of the most effective and safest methods to remove conformal coatings on delicate electronic devices is micro-abrasive blasting or ‘MicroBlasting’. With micro-abrasive blasting, the task of removing conformal coating is fast, safe, environmentally friendly, and cost-effective. It supports the selective removal of coatings while maintaining careful control over the process to eliminate damage to delicate components. Using the PMRS for conformal coating removal application does not typically require highly trained personnel when using ScanCAD’s step-by-step procedures and training videos.
The process includes clear step-by-step guidance on how to use our complete, self-contained MicroBlasting system combined with a variety of accessories and the proper abrasive powder and nozzles to provide excellent conformal coating removal results on a wide variety of substrate materials and conformal coatings. The process has been carefully tested and proven to work, eliminating guess work and costly mistakes.
Why Use the PMRS Tool?
This process is powerful and accurate and reduces the risk of damage to components, connections, and PCB features such as external and internal copper layers with fine traces & spaces. Workflows, videos and documentation are included for training purposes.
Benefits of the PMRS Tool
- Accurate: Removes conformal coating safely
- Fast: Much faster than previous techniques
- Flexible: Multipurpose – PCBs, Components, etc.
- Eliminate: Mess & contamination concerns
- Easy: Simple step by step procedure
- Safe: Advanced HEPA filter built into the unit
- Versatile: Can be used for multiple applications, such as Conformal Coating, Removal PCB, RE Delamination, Small part Deburring, Polishing & Cleaning.
Magnifier: See small details easily and reduce eye strain with a 2.5X magnifier. With an 8-10” depth of focus, the operator can work at a normal, natural distance.
The type of abrasive powder used has the most significant impact on the blast’s effectiveness. The size, hardness and shape of the individual particles give each type of powder unique characteristics.
Conformal Coating Material Types: Acrylic, Silicone, Polyurethane, Epoxy, Parylene, UV Epoxy, UV Siicon, Etc,.
The Right Mix
With each new application, the factors below are tested with nozzle and powder selections. The formula that works best will be determined by:
- Type of conformal coating to be removed
- Thickness of the coating
- Type of base product the coating is covering
Once the correct combination is achieved, keeping these parameters constant is easy – producing repeatable and consistent results.
ESD Control Module
The ESD Control Model combines the standard workstation, dust collector and Electro Static Discharge (ESD) controls into a single compact unit.
Military and industrial applications alike often involve devices that are sensitive to and can be damaged by exposure to Electro-Static Discharge(ESD). An Ionizer bar with a series of electrode probes that continuously emit a flow of charged ions into an air stream flowing out from around each of the probes. This flow if highly ionized air floods the system’s work area and quickly neutralizes any surface charges.
To further reduce the build-up of electro-static charges, the system includes the following accessories for grounding the nozzle and work piece: edge-connector grounding bar, needle probe, grounded hand piece and conductive nozzles. This flow of highly ionized air floods the system’s work area and quickly eutralizes any surface charges.
The Patented modulator feed system provides a very consistent stream of abrasive material from the nozzle. This is critical because any variation in abrasive flow will impact how deep the process cuts. Modulated feed is an ideal for this challenge.
The special gate valve on the mdeia dispensing unit produces a fast response when starting and stopping the abrasive flow. This design improves the longevity and durability of the system and avoids having to pinch the abrasive hose which causes wear, or to use a sacrificial tube, which will wear very quickly.
Black lights come in as standard tools for the ESD Control Model. Designed for those coatings that are easily visible under ultra-violet lighting, black lights can be installed.
The CCR Option comes in 2 Models:
ESD Control Model
Advanced downdraft HEPA filter – 500 SCFM
99.97% filtration efficiency on 0.3 micron-sized particles
Ergonomic design reduces operator fatigue
Size/weight: 30”Wx46”Hx34”D / 170 lbs (77.3 Kgs)
Interior space: 2.2 ft.³ 24” wide X 14” deep X 10” high (approx.)
Window: Tempered glass opening (hinged) 23”X11”
Lighting: 18-Watt black fluorescent lights (2)
Sound level: 68 dBa CE & RoHS Compliant
115V/60Hz 4 amp or 230V/50Hz 2 amp
80 psi air supply of 4 SCFM required
All specifications and designs subject to change without notice
Standard Model includes:
Delamination System & Accessories
Proper abrasive powder & nozzles for PCB’s
All standard supplies
ScanCAD training materials – videos, workflows
ESD Control Model includes:
Edge-connector grounding bar
Grounded hand piece and conductive nozzles
Grounding jacks inside the blast chamber Ionizer bar
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All ScanCAD products were developed at the request of its customers, therefore your comments and suggestions are welcome.