In industries like aerospace, medical devices, automotive, and energy, the reliability of CNC-machined metal parts is crucial. Even minor defects can lead to catastrophic failures, costly downtimes, or product recalls.

That’s why rigorous quality control and adherence to inspection standards are fundamental to successful metal component production.

At DXTSEALS, we implement comprehensive quality assurance practices to ensure every part we deliver meets—and often exceeds—client expectations.

🛠️ Core Quality Control Points in CNC Metal Machining

Effective quality control begins long before final inspection. It is embedded at every stage of the manufacturing process.

✅ 1. Material Verification

Before machining begins, incoming materials are verified for:

• Grade and alloy compliance (e.g., 316L stainless steel, 7075 aluminum)

• Material certifications from suppliers

• Visual and dimensional inspection of raw materials

Proper material selection and verification prevent downstream failures.

✅ 2. Process Control During Machining

Maintaining consistency during machining operations is key to minimizing defects.

• CNC program verification through simulations and dry runs

• Tool wear monitoring to maintain accuracy

• In-process measurements using calipers, micrometers, or probes

• Statistical Process Control (SPC) techniques to track variation

At DXTSEALS, we use automated probing systems inside CNC machines to validate dimensions during production runs.

✅ 3. Final Dimensional Inspection

After machining, all critical dimensions are inspected according to engineering drawings and tolerances.

Typical inspection tools include:

• Coordinate Measuring Machines (CMMs)

• Height gauges and surface plates

• Micrometers, bore gauges, and calipers

• Go/No-Go gauges for fits and tolerances

We routinely achieve tolerances of ±0.005 mm for precision-critical parts.

✅ 4. Surface Finish and Visual Inspection

The surface condition is critical, especially for sealing faces, moving parts, or cosmetic components.

• Surface roughness testing (using profilometers, Ra measurement)

• Visual inspections for burrs, scratches, and machining marks

• Edge break and chamfer verification for safe handling and assembly

Typical surface roughness requirements include Ra 0.2 - 0.8 µm depending on application needs.

✅ 5. Specialized Testing (If Required)

For mission-critical applications, additional testing may be performed:

• Hardness testing (Rockwell, Vickers) for heat-treated parts

• Non-destructive testing (NDT): dye penetrant, magnetic particle, ultrasonic inspection

• Pressure and leak testing for housings and fluid system parts

• Corrosion resistance testing (salt spray, chemical immersion)

DXTSEALS can arrange third-party certifications when required by customer specifications.

📏 Key Inspection Standards for Metal Parts

Several international standards guide the inspection and quality control of metal machining:

• ISO 2768 — General tolerances for linear and angular dimensions

• ISO 1101 — Geometric dimensioning and tolerancing (GD&T) principles

• ASME Y14.5 — US standard for GD&T

• ISO 4287 / 4288 — Surface texture (Ra, Rz measurements)

• ISO 9001 — Quality management systems certification

At DXTSEALS, we follow these standards rigorously to deliver parts ready for global markets.

🏭 Why Choose DXTSEALS for Precision Metal Parts?

At DXTSEALS, quality is not just a checkpoint—it’s a culture. We offer:

• 📋 Full material traceability and batch control

• 🛠️ Process documentation and inspection reports upon request

• 🔍 State-of-the-art measuring equipment for precise validation

• 📦 Customized quality assurance processes tailored to your industry

• ✅ ISO-compliant manufacturing with continuous improvement initiatives

Whether you need simple bushings or complex aerospace-grade components, you can trust DXTSEALS for zero-compromise quality.

🚀 Build Confidence in Every Component

Choosing a manufacturing partner with robust quality control processes ensures not only the success of your parts—but the success of your entire project.

🔗 Learn more about DXTSEALS' precision machining capabilities at www.dxtseals.com or contact us today for a customized quality proposal.

Make no compromise—choose precision. Choose DXTSEALS.