DEFECTS IN EXTRUSION PROCESS AND THEIR IMPACT ON PRODUCT QUALITY

In the 20th century, the number of manufacturers had established extrusion pipe manufacturing plants on the customer demand. To ensure quality extrusion pipe manufacturing, it is essential to identify, control, and monitor all quality parameters. Some of the important parameters are condition of equipments, operating conditions, temperatures, pressures, quality of dies, materials. Instead of the sincere efforts from the manufacturers, still there are number of obstacles in the process which lead to defects in the product. The purpose of this review paper is to focus on the various defects in the extrusion process, to identify its impact on the product quality and to suggest the remedies for the improvement of extrusion process