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Article: Weld-proof sensor coating.(Application Xtra)
- Article from:
- Designfax
- Article date:
- November 1, 2003
CopyrightCOPYRIGHT 2003 Nelson Publishing. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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* outperforms thermosets, thermoplastics
* resists buildup
"The conditions present in resistance welding applications are extremely harsh. Weld slag, high heat and physical contact lead to high rates of sensor failure," says Craig Brockman, inductive products manager at Balluff Inc. "Inductive sensors used in this environment typically use a Teflon coated cap. When weld slag strikes a Teflon cap, it may not initially stick, but it will pit the surface and give weld slag a foothold. Once enough slag builds up, the sensor will false trigger. Eventually the slag cats its way through the cap and destroys the sensor's electronics."
To combat this ...