Display method of 316L + Q345R composite steel plate weld zone structure

• Main Authors: LIAO HONGYI, FENG YUJIE, OU YONG, QIU FUXIANG, TIAN ZHIGUO, CAO BO, GUO ZEYAO, GUO XIAOXIAO
• Format: Patent
• Language: Chinese; English
• Published: 22.03.2024
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses a 316L + Q345R composite steel plate weld joint area structure display method, which comprises the following steps: firstly, taking a composite steel plate test piece for processing, then welding two processed 316L + Q345R regular-shape composite steel plates together by using a high-nickel and high-chromium welding material under the protection of CO2 gas, then processing a welding sample to a required specification by taking a weld joint as a center, and finally obtaining the 316L + Q345R composite steel plate weld joint area structure. Grinding the sample, continuing to pre-grind, roughly grind, finely grind and accurately grind, and finally polishing to a mirror surface to obtain a test piece to be tested; according to the method, ferric trichloride, distilled water and concentrated hydrochloric acid in a specified proportion are used for preparing a treating agent, then degreasing cotton is dipped into the treating agent to repeatedly wipe the welding position of a to-be-tested pi