Chem Mill Operator LPCT
Listed on 2026-02-21
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Manufacturing / Production
Manufacturing Production, Quality Engineering
Company Profile
With more than 120 operations and approximately 20,000 employees worldwide, Precision Castparts Corp. is the market leader in manufacturing large, complex structural investment castings, airfoil castings, forged components, aerostructures and highly engineered, critical fasteners for aerospace applications. In addition, we are the leading producer of airfoil castings for the industrial gas turbine market. We also manufacture extruded seamless pipe, fittings, and forgings for power generation and oil & gas applications;
commercial and military airframe aerostructures; and metal alloys and other materials for the casting and forging industries. With such critical applications, we insist on quality and dependability - not just in the materials and products we make, but in the people we recruit.
PCC is relentless in its dedication to being a high-quality, low-cost and on-time producer; delivering the highest value to its customers while continually pursuing strategic, profitable growth.
In 2016, Berkshire Hathaway, led by Chairman and CEO Warren
E. Buffett, acquired Precision Castparts Corp.
To chemically remove titanium stock from castings and prepare castings surfaces in order to meet customer specifications. To accurately prepare, operate and maintain tanks used for chemical milling of all titanium castings and revert metal.
Principal Accountabilities1. Casting Preparation
Objective: to measure and inspect castings prior to milling which may require working with hazardous waste.
Essential Job Functions:
- Reviews Technique Cards and paperwork.
- Visually inspects castings for core material, scale, sand and other contaminants; may reject parts for chemical milling and reroute for cleaning.
- Measures specified areas on castings using dimensional measuring devices and/or Ultrasonic Thickness testing equipment to determine amount of stock to be removed; records measurements.
Objective: to take samples of chemical baths, make corrections, neutralize, pump and build baths prior milling to assure conformance to process control specifications; to test tank pumping systems prior to operation.
Essential Job Functions:
- Checks daily lab analysis to determine if bath chemistry is within specification ranges; checks bath temperature.
- Calculates etch rate using standard formula.
- Adds acid to bath in order to bring chemistry up to specifications, using standard formulas; adjusts surface tension as needed.
- Checks operations of circulation pumps; checks for leaks; troubleshoots and reviews pumping diagrams if needed.
- Pumps spent tank solutions to neutralization facility; cleans and rinses tanks.
Objective: to submerge castings in baths and mill according to specified procedures.
Essential Job Functions:
- Submerges castings in chemical tanks using tumblers, fixtures and hoists; submerges castings into a nitric-hydrofluoric acid solution in accordance with Process Control Procedures.
- Monitors milling operations; calculates etch rate and modified bath times accordingly.
- Removes masking tape; places dried parts on pallets.
- Removes castings, rinses and transfers to drying ovens.
Completes logs and records, including measurements, calculations, chemical additions and milling times.
5. Meets all production and quality standards.
6. SafetyObjective: to take responsibility for and demonstrate safe work practices.
Essential Job Functions:
- Adheres to plant and department safety rules.
- Safely operates all equipment and tools.
- Identifies and reports safety problems.
- Wears personal protective equipment, including respirators during acid bath additions.
Performs other tasks as directed.
Equipment, Vehicles, Tools and/or Machinery Used- forklift
- pallet jacks
- dimensional measuring tools (calipers, micrometers, ultrasonic thickness gauge, etc.)
- hoist (radio controlled)
- chains and straps
- drying oven
- drying screens
NOTE:
For job positions that require respiratory protection (more than a filtering face piece - dust mask):
In compliance with the Oregon Occupational Safety and Health Division Personal Protective Equipment…
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