What are the main methods for studying the polishing of stainless steel pipe elbows? Here is a detailed introduction for you:

1. Mechanical polishing: Mechanical polishing is divided into rough polishing and fine polishing. During the rough polishing process, sprinkle coarser chromium oxide, aluminum oxide or magnesium oxide polishing liquid appropriately, and keep the wool on the polishing disc wet. During the rough polishing process, hold the sample tightly, reciprocate along the radial direction of the polishing disc, adjust the applied pressure evenly, and pay attention to the pressure should not be too large. At the beginning of polishing, sprinkle some polishing liquid from time to time. Then gradually reduce the pressure and reduce the concentration of the polishing liquid until the fine grinding marks disappear, and the surface is flat and bright without black spots. The rough polished sample is washed with water and then finely polished. Fine polishing is used to remove the grinding marks left by the rough polishing and make the grinding surface bright and flat. The polishing machine used for fine polishing is basically the same as the equipment used for rough polishing.

2. Electrolytic polishing: The metal ions separated from the workpiece form a phosphate film with the phosphoric acid in the polishing liquid and adsorb on the surface of the workpiece. This mucous film is thinner at the protrusions and thicker at the concave parts. Because the current density at the protrusions is high, it dissolves quickly. As the mucous film flows, the concave and convex parts change continuously, and the rough surface is gradually leveled.

3. Chemical polishing: Chemical polishing is to make the microscopic protruding parts of the surface of the material in the chemical medium dissolve first than the concave parts, and then get a smooth surface. The main advantage of this method is that it does not require complicated equipment, can polish workpieces with complicated shapes, can polish many workpieces at the same time, and the speed is not bad. The core issue of chemical polishing is the preparation of the polishing liquid. The bolts of the packing gland of the stainless steel elbow valve should be tightened evenly and should not be pressed into a crooked state to avoid bumping, blocking the movement of the valve stem or causing leakage. When the ball valve, stop valve, and gate valve of the stainless steel elbow are used, they are only fully opened or fully closed. It is not allowed to be used for regulating flow to avoid erosion of the sealing surface and accelerate wear. There is a reverse sealing device in the gate valve and the upper threaded stop valve. The hand wheel is rotated and tightened to prevent the medium from leaking from the packing.

Precautions for the use of Stainless Steel Weld Elbow. The stainless steel elbow can be installed directly on the pipeline according to the connection method, or it can be installed according to the use direction. Under normal circumstances, it can be installed at any position in the pipeline, but it needs to be sealed to avoid flushing and affecting the normal operation of the pipeline.