{"id":18965,"date":"2022-10-10T12:36:04","date_gmt":"2022-10-10T09:36:04","guid":{"rendered":"https:\/\/fractory.com\/?p=18965"},"modified":"2024-01-26T13:27:48","modified_gmt":"2024-01-26T11:27:48","slug":"welding-defects-types-causes-prevention","status":"publish","type":"post","link":"https:\/\/fractory.com\/welding-defects-types-causes-prevention\/","title":{"rendered":"Welding Defects – Types, Causes, Prevention"},"content":{"rendered":"

Welding defects are imperfections that occur during different welding processes<\/a>. There are various reasons why welding defects occur during an operation.<\/p>\n

Welding services<\/a> are mainly used in the manufacturing industry for joining metals in constructing buildings, bridges, automobiles, aircraft, pipes, and many other objects. However, welding is not a perfect process as numerous types of welding defects can occur internally or externally in the welded metal.<\/p>\n

Let’s explore some of the more common weld defects, their causes, and remedies.<\/p>\n

What Is a Weld Defect?<\/h2>\n

A weld defect results from a poor weld, weakening the joint. It is defined as the point beyond the acceptable tolerance in the welding process.<\/p>\n

Imperfections may arise dimensionally, wherein the result is not up to standard. They may also take place in the form of discontinuity or in material properties<\/a>. Common causes of welding defects come from incorrect welding patterns, material selection, skill, or machine settings, including welding speed, current, and voltage.<\/p>\n

When a welded metal has a welding defect present, there are multiple options for resolving the issue. In some cases, the metal can be repaired, but at other times the metal itself has melted and the welding procedure needs to be restarted.<\/p>\n

Weld irregularities occur for a variety of reasons and it results in different welding defects. They can be classified into two major categories: internal welding defects<\/strong> and external welding defects.<\/strong><\/p>\n

External Welding Defects<\/h2>\n

External welding defects refer to discontinuities in the weld metal that are noticeable to the naked eye.<\/p>\n

Cracks<\/h3>\n

\"welding<\/p>\n

Cracks are the worst welding defect since they can rapidly progress to larger ones, which inevitably leads to failure. Weld cracks are mainly classified depending on how they form in the weld bead.<\/p>\n

Longitudinal cracks<\/strong> form parallel to the weld bead while transverse cracks<\/strong> form across the width. Crater cracks<\/strong> form at the end of the bead, where the arc concludes.<\/p>\n

Welding cracks can also appear at varying temperatures:<\/p>\n