Study on Identification and Classification of Causes which Generate Welds Defects

In the practice of organizations, we notice the existence of a problem which influences negatively the operating parameters of a product and it has to be very accurately identified and proposals have to be drawn-up in order to remove it. This paper presents a method for assessing the quality of welding by applying one of the classic instruments of quality management. The clauses that generate welding defects are identified and classified. The causes are also grouped in two large categories: positive causes and negative causes depending on the effect they have on the studied problem. An Ishikawa diagram with a new formula 4M+4RM was proposed, to separate the positive causes from the negative ones. The importance of this method is also mentioned in the analysis of quality products.