The plan implements the spirit of the Outline of the Twelfth Five-Year Plan for National Economic and Social Development and the Plan for Industrial Transformation and Upgrade (2011 ~ 2015), and summarizes and analyzes the development of mechanical basic parts, basic manufacturing processes and basic material industries.

Brazing is a process that uses a metal with a lower melting point than the base material as the brazing material, which is heated to more than 800F, the brazing material melts, and the weldment does not melt, and two or more metal workpieces are welded together.

When brazing, only when the molten liquid brazing material wets the surface of the base metal well can the fillet be filled.

Brazing: A filler metal with a lower melting point than the base metal (called brazing filler metal).

The types of low alloy high strength steel can be divided into non-quenched and tempered steel.

It is unfavorable to have small requirements when using electrodes.