| 摘要 |
A welding alignment and spacing article is provided for forming a welding gap between two structures to be welded together. The article includes a body having first and second surfaces that are spaced from each other at a selected spacing distance to define a region of selected body thickness. The body is formed from a non-metallic degradable body material in the region that can be wholly or partially degraded by exposure to a degrading agent to reduce the body thickness. The body is also formed from a non-degradable body material in the region. The degradable body material and the non-degradable body material are sufficiently incompressible to be useable as a spacer that maintains a specified welding gap distance between the two structures to be welded. |
