Good welding effects has been obtained through changing to use J506 welding stick, designing scientific and reasonable welding process.

Improvement method of testing welding rod surface parting shape dimensions using lock phase amplifier;

The influence of melt slag basicity to welding rod coating alloying element transition coefficient;

Evaluation of typical metal transfer modes for covered electrode;

and the tendency for hydrogen - induced cracking of the T91/ 12Cr1MoV joint welded with different covered electrodes was investigated by means of electrolytic hydrogen charging and constant - load delayed cracking test.

Application of Complex Ferroalloy in Coating of Electrodes;

Special electrode with high temperature corrosive resistance;

The study of electrode for line pan of scraper conveyer;

According to a new type of frog made of granular bainitic steel,the paper researches a special welding electrode for repairing and joining.

CHE607GX is a kind of welding electrode with high toughness and low sulphur fox X70 pipeline steel in China .

On the basis of study on the weldability of 40Cr steel and 55Si2Mn steel,welding process test was contrasted among different manual electrodes and different combined of manual electrodes.

According to requirements of large size gear of mine and cement machinery for surfacing wear resistant performance,research was concentrated on surfacing manual electrodes possessingimpact resistance and mid-metals contact fatigue wear resistance.