REDUCE COSTS AND GET BETTER PRODUCT USING YOUR OWN SPC SYSTEM ON YOUR LINE AT YOUR PROFILE EXTRUDER'S PLANT: A CUSTOMER'S PERSPECTIVE

摘要

SPC (Statistical Process Control) is a powerful tool that can be used to enhance quality and increase productivity in profile extrusion lines, but the number of custom extruders that use SPC is limited. When the right extrusion vendor can be found who is open to new ideas and is willing to work in partnership with a customer with basic SPC skills, it is possible to increase part quality and reduce costs simultaneously. For dollar3,500 plus a low end laptop and one of the popular spreadsheet programs, a simple, portable and powerful SPC system can be built, assembled, and programmed. All hardware and software is commercially available. Only a limited knowledge of instrumentation, statistics, and the ability to design and use a spreadsheet program is necessary to employ the methods presented. An example is presented wherein a customer brought his own portable SPC system into his profile extrusion company's shop and used it to troubleshoot the process, improve the quality of the customer's product, and decrease manufacturing costs by increasing production rates.