LIAG LAUFER is a specialist in hygienic shutter valves and pigging systems. The products are designed to meet the highest safety demands in the food industry and must withstand significant abrasive wear and a corrosion aggressive environment. Their stainless steel cones were originally specified with hard chrome plating. Due to the potential health risks however, hard chrome plating is increasingly prohibited in the food industry. LIAG LAUFER needed to find an alternative. In their attempt to solve these challenges LIAG LAUFER tried different surface hardening solutions, which all failed, including a commonly used carburizing process, which caused corrosion after short time in use.
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