Welding has so many requirements
Publish Time: 2016-09-01 Origin: Site
Welding process is not simple techniques, the welding process has many demands, summarizes some for everybody below small make up.
(1) welding procedure qualification should be based on reliable steel welding performance and welds before completion of the works.
Welding parameters used in the welding procedure qualification, in principle is according to the weldability of the steel welding test result to determine, especially after the heat input, preheat temperature and hot temperature.For weldability have been fully understood, there is a clear guidance of welding process parameters, and has long use in practice production in domestic and foreign mature steel grade, generally do not need to mount the construction enterprise to carry on the weldability test.For: domestic development and production of new steel grade, or imported from abroad without used types of steel, should be provided by the steel weldability test assessment data.Otherwise the construction enterprises should collect related data and weldability test, as the basis of welding procedure parameters.Welding parameters used in the welding procedure qualification, in principle is according to the weldability of the steel welding test result to determine, especially after the heat input, preheat temperature and hot temperature.For weldability have been fully understood, there is a clear guidance of welding process parameters, and has long use in practice production in domestic and foreign mature steel grade, generally do not need to mount the construction enterprise to carry on the weldability test.For: domestic development and production of new steel grade, or imported from abroad without used types of steel, should be provided by the steel weldability test assessment data.Otherwise the construction enterprises should collect related data and weldability test, as the basis of welding procedure parameters.
(2) the general procedure of welding procedure qualification: for welding process procedure and welding specimen and preparing the style to test specimen and the specimen, determine whether the welding joint has required the use of performance to make the welding procedure qualification report to assess the proposed welding process instructions.
(3) equipment, instrument used in the welding procedure qualification should be in normal working state, steel, welding materials must conform to the corresponding standards, by this unit skilled welding workers have been using this unit welding equipment welding specimen.
(4) management assessment work and comprehensive evaluation of welding and test results of personnel should be the welding engineer.
(5) after finishing the assessment data should be stated, and by the welding engineer to confirm the results.
(6) after the examination and approval of the assessment data can be in the same quality management system in general.
That is some introduction about welding process requirement, hope everyone in the later work to attract attention.