Does the fire pump need lubricating oil for daily work?

Dadonghai Pump Technical Support: The purpose of the fire pump is to increase the water pressure and transport water through mechanical movements. Like other mechanical products, lubrication is needed to provide lubrication in the work, otherwise the dry grinding will cause the failure of the fire

Cobalt ore dressing

1. Copper nickel cobalt ore The cobalt in the ore is similar to copper and nickel in the same mineral. In the process of beneficiation , nickel and cobalt cannot be separated. Therefore, it is not necessary to design a separate process for selecting cobalt-containing minerals. The selected concent

Rapid development of metal forming machine tools

During the “10th Five-Year Plan” period, the compound growth rates of cutting machine tools and forming machine tools were 26.7% and 19.6%, respectively. The corresponding data during the “Eleventh Five-Year Plan” period was 21.72% and 30.32%, respectively, and the