Quality Technician-Investment Casting

Sigma Castings; Markesan (WI); On-site; USD 60,000 - 80,000; Full time

Job summary

Sigma Castings in Wisconsin is seeking a Quality Technician to ensure product compliance and material integrity throughout the investment casting process. You will perform receiving, in-process and final inspections, and support metallurgical testing.

Working with quality engineers and production staff, you will verify dimensional conformance, maintain traceability, and help uphold AS9100D and Nadcap standards on the shop floor.

Qualifications

• Education: High School Diploma or GED; associate degree preferred.
• 2+ years in aerospace quality, inspection, or foundry environments.
• Must read aerospace blueprints and GD&T per ASME Y14.5.
• Proficient with precision inspection tools and Excel/ERP software.
• Physical ability to lift up to 35–40 lbs.

Responsibilities

• Perform receiving, in-process and final inspections on raw materials and castings per drawings and travelers.
• Prepare metallographic samples and conduct hardness testing, grain size analysis, and chem verification.
• Operate precision measuring tools and perform routine gage calibration and dimensional checks.
• Support AS9102 FAIR data collection for customer quality packages.
• Identify non-conforming material, issue NCRs, and ensure lot/heat traceability.
• Audit internal processes for AS9100D and Nadcap compliance.

Skills

Blueprint reading

GD&T knowledge

Inspection tools

Excel / ERP

Quality documentation

Education

High School Diploma or GED

Associate degree in Mechanical/Metallurgical Technology

Tools

CMM checks

FARO/Romer

OES/XRF spectrometry

Job description

Description

The Quality Technician ensures product compliance and material integrity throughout the investment casting process. Working closely with quality engineers and production personnel, this role performs receiving, in-process, and final receiving/shipping inspections, conducts metallographic and lab testing, verifies dimensional conformance using precision measuring tools, and maintains shop-floor compliance with AS9100D and Nadcap requirements.

Key Responsibilities

• Receiving, In-Process & Final Inspection: Perform visual, dimensional, and receiving inspections on raw materials (wax, slurry refractories, master heat alloys) and finished castings per customer drawings, PO requirements, and process travelers.
• Laboratory & Metallurgical Support: Prepare metallographic samples (sectioning, mounting, polishing, etching) and perform hardness testing (Rockwell, Brinell), grain size analysis, and chemistry verification (OES/XRF spectrometry) under supervision.
• Dimensional Inspection & Gage Control: Operate precision layout and measuring equipment—including height gages, micrometers, calipers, surface plates, optical comparators, and air gages. Perform routine calibration checks on shop-floor gages and measuring tools.
• First Article & Documentation Support: Assist Quality Engineers in gathering dimensional and material test data for AS9102 First Article Inspection Reports (FAIR) and customer quality packages.
• Non-Conformance & Traceability Handling: Identify, isolate, and tag non-conforming material. Issue internal non-conformance reports (NCRs) in the ERP system and ensure complete lot/heat traceability throughout post-cast operations.
• Audit & Standard Compliance: Conduct internal process audits to verify operator compliance with standard work instructions, AS9100D guidelines, and Nadcap special process requirements.

Requirements

Required Qualifications

• Education: High School Diploma or GED required; Associate degree in Mechanical, Manufacturing, Quality, or Metallurgical Technology is preferred.
• Experience: 2+ years of hands-on quality technician or inspector experience in aerospace manufacturing, precision machining, or foundry environments.
• Technical Skills:
• Strong ability to read and interpret complex aerospace engineering blueprints and shop travelers.
• Basic knowledge of Geometric Dimensioning and Tolerancing (GD&T per ASME Y14.5).
• Proficiency in using precision mechanical inspection tools and standard office software (Excel, ERP systems).
• Vision & Physical Requirements: Annual vision screening required. Ability to lift up to 35–40 lbs safely.

Ideal candidate would possess the following qualifications. However, these are not mandatory for consideration.

• ASQ Certified Quality Technician (CQT) or Certified Mechanical Inspector (CMI).
• Prior experience in a precision investment casting foundry (working with ferrous and non-ferrous alloys)
• Experience assisting with CMM operational checks or portable inspection arms (FARO/Romer).
• Knowledge of AS9100D and Nadcap quality system documentation.