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 pump. . Fire pumps are used as emergency equipment and some do not work for a long time, so lubricating oil is particularly important to it.
The speed at which the fire pump consumes lubricant is also a factor in considering the performance of the fire pump. Basically good fire pump oil consumption is relatively low, but it also depends on the quality of the lubricant itself. Fire pump lubricants (fat) need to be replaced according to actual conditions. To teach you a principle, that is, "a filter with five principles"
One filter: Switching the container once requires a filtration to eliminate any impurities.
Fixed point: refuel at the lubrication location specified by the fire pump and must not be added at other locations.
Qualitative: To maintain the quality of lubricating oil and clean without impurities, to prevent chaos refueling or add deteriorating, dirty oil.
Quantitative: Every time you add fuel, you must add it to the fire pump rating, and you must not add more to it. Too little lubricant can damage the fire pump. Excessive waste is also detrimental to the normal operation of the fire pump.
Timing: Lubricate the fire pump in accordance with the prescribed time to avoid long-term non-refueling or unnecessary frequent refueling.
Regularly: Clean the fueling area regularly. As the fire pump wears out and the oil gradually deteriorates during use, the lubrication effect will be affected. It is necessary to periodically clean the lubrication area and replace it with new one.
Deep Drawing is a Sheet Metal Fabrication process in which a sheet metal blank is radially drawn into a forming die by the mechanical action of a punch. It is thus a shape transformation process with material retention. The process is considered "deep" drawing when the depth of the drawn part exceeds its diameter. This is achieved by redrawing the part through a series of dies. The flange region (sheet metal in the die shoulder area) experiences a radial drawing stress and a tangential compressive stress due to the material retention property. These compressive stressesesult in flange wrinkles (wrinkles of the first order). Wrinkles can be prevented by using a blank holder, the function of which is to facilitate controlled material flow into the die radius.
Deep drawing is one of the most widely used processes in sheet metal forming. It is used in a wide range of production processes. For example, it is used by the automotive industry to manufacture car parts; it is also used for making household items such as stainless steel kitchen sinks. 
Deep Drawing
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