The use of quality management techniques to identify sources of incompatibilities in sealants

Purpose: The effectiveness of the NDT tests is to identify the incompatibility of the products without their destruction, but NDT tests do not point out the root of incompatibility. The aim of the study was to identify the incompatibility in the product (the mechanical sealer) using the fluorescent method (FPI) and to identify the root of this incompatibility using quality management techniques (5W2H method, Ishikawa diagram, 5Why method). Design/methodology/approach: To identify the root of incompatibility in the product the quality management techniques were used, i. e. 5W2H method, Ishikawa diagram and 5Why method. The subject (the mechanical sealer) on which being incompatibility (porosity cluster) was identified, was made from 410 steel. The problem in which the porosity cluster was identified after the fluorescent method (FPI). Findings: It has been shown that integrating NDT with the selected quality management techniques is an effective way to identify the problem and the root of its creation. Practical implications: This approach can be used in enterprises to analyze different types of products and incompatibilities. Originality/value: It was proposed to integrate the NDT tests with the selected quality management techniques. This integration allows identify the root of the problem and achieving the needed quality of the product.