The results show that under hypergravity conditions, the solidification structure of SPA-H weathering steel plates with different proportions all exhibit stratification, in which the tin-rich phase with lower density is concentrated on the upper part of the sample, while the lead-rich phase with higher density settles in At the bottom of the SPA-H steel plate sample, there is a eutectic structure in the middle, and this delamination phenomenon becomes more and more obvious as the gravity coefficient increases. In the presence of density differences, hypergravity can achieve segregation and delamination of different structures in the
SPA-H steel plate.
The results show that the welding process has a great influence on the N element absorption and escape behavior of the surfacing deposited metal that depends on the transition of N elements from the air to strengthen the SHDI159i self-protecting SPA-H steel plate. Changes in the surfacing process will cause SPA- H the nitrogen content in the deposited metal of H steel plate obviously changes, and results in a significant difference in mechanical properties; when using the open arc SPA-H steel plate for surfacing continuous casting rolls, the process parameters must be fully considered to cause the composition, organization and mechanical properties of the deposited metal Impact.
