Many types of welding methods , and new methods are still emerging, so how to conduct scientific classification welding method is a very important issue. Correct classification can not only help the reader understand, learn the characteristics of various Cast Iron Welding Electrode methods and nature , but also for scientists to develop new welding technique to provide a strong foundation. At present , domestic and foreign works of many types of welding methods taxonomy , varies. The manual begins with a simple classification of the existing descriptions and comments , and then propose a new classification method , discuss its principles and benefits. The volume and use it as the basis for the preparation of each chapter .