Main causes of subsurface bubble formation in EN steel grade S235J2 material

Tempering includes high temperature tempering, medium temperature tempering and low temperature tempering. Tempering means to reheat the EN steel grade S235J2 material quenched steel to a certain temperature and then cool it in a certain way. Tempering can reduce or eliminate the internal stress produced by quenching, reduce the hardness and strength, and improve the ductility or toughness of steel. After EN steel grade S235J2 material quenching, the workpiece should be tempered in time, and the required mechanical properties can be obtained through the combination of quenching and tempering.

SA36 carbon structural steel is a material belonging to the ASME boiler and pressure vessels. The products are produced in steel plates, steel sheets, steel bars, and section steels. The tensile strength is 400-550MPa; the yield point is greater than or equal to 250MPa. SA-36 steel production process: the steel is killed steel. Detailed specifications: EN steel grade S235J2 material thickness: 8-100mm, width: 1600-4020mm, length: 6000-17500mm. It is commonly used in the construction of bridges and buildings.

Every after-sales service shall have a detailed record of the customer's product problems and handling methods. The records shall be sorted into volumes and filed on a monthly basis, and submitted to the technical department for filing. The problems found in the after-sales service shall be summarized in a timely manner, discussed with the technical department, the quality inspection department and the production department, and a proper solution shall be proposed for the technical department to improve in a timely manner;

The after-sale service of iron and steel products includes after-sale tracking service, technical guidance, transfer of relevant bills, handling of objections and many other contents. The handling of quality objections accounts for a large proportion. When dealing with these problems, we should distinguish the responsibilities, and compensate or return the inconvenience or loss caused to users due to steel.

The company operates on the principles of fairness, objectivity, science, pragmatism and integrity. The management treats people with courtesy, takes sincerity as the standard management, dares to open up, unites and advances, carries on the past and makes unremitting efforts, seizes the good trend of economic development, strengthens exchanges with peers, makes friends with all walks of life, keeps pace with the times and creates greater brilliance of the enterprise, and makes its own contribution to the prosperity and development of the steel industry.

The company is mainly engaged in EN steel grade S235J2 material steel plates manufacturing and deep processing, sales and distribution. It is committed to building a complete modern steel purchase and sale network. Here we would like to express our sincere gratitude to our old and new friends who have always given care, support, affirmation and help, and sincerely hope to establish a long-term cooperative relationship with them for mutual benefit, win-win and common development, and work EN steel grade S235J2 material together for a better tomorrow.