QUALITY CONTROL

ISO 9001:2008 Certified

View our ISO 9001:2008 Certificate (PDF)

Quality Assurance

One of the products that we manufacture requires
tight tolerances for concentricity, perpendicularity, length and ovality.

To ensure consistent alignment of all four tolerances, American Friction Welding designed a quality-testing gauge to measure concentricity, perpendicularity, length and ovality of each part. With one 360-degree rotational pass, the gauge probes and evaluates these four parameters, reporting a pass or fail for each tolerance.

Our Custom Quality Gauge

Tolerance Testing

When manufacturing to tight tolerances, this test ensures quality parts throughout our clients' friction welding projects. Our custom quality gauge measures and evaluates length, as well as the following three tolerances.

Concentricity

A three-dimensional geometric tolerance that controls how much the median points of multiple diameters may deviate from the specified datum axis.

Perpendicularity

A 3-dimensional geometric tolerance that controls how much a surface, axis or plane can deviate from a 90 degree angle.

Ovality

A cylindrical measurement tool that traverses the circumference of the cylindrical element to measure and record any dynamic distortions that range between circular and oval.

STEP 1

STEP 2

STEP 3

The friction welding operator programs the quality gauge with each tolerance value per the customer's specs. Next, the operator places the part on the Custom Quality Gauge.

With one 360-degree rotation, the gauge very quickly and accurately measures and evaluates all four tolerances. The results are used in the pass/fail test to ensure quality.

Our Custom Quality Gauge collects and stores the data, which later can be forwarded for further Statistical Process Control (SPC) analysis.

Operator enters tolerance values from customer specs

Receptor probes are attached to mesaure variances during the test.

In one complete revolution, the custom quality gauge measures the tolerances

With tolerances captured this quickly, we save valuable lead time.

Parameters are stored and transferred for additional analysis See "Tips on Using Fillet Weld Gauges," featured article on pg 14 of the January 2011 issue of Inspection Trends, an online magazine for materials inspection and testing operators.
Courtesy of www.aws.org

Find more articles, news and resources...

Leading welding advisors often recommend that you "ask your supplier to prove their attainment of your required tolerances."