Application measures and precautions for stainless steel elbows
1.Stainless steel elbows that have been stored for a long time should be inspected as planned. The exposed processed surfaces must be kept clean, dirt removed, and neatly stored in a well-ventilated indoor area. Stacking or open-air storage is strictly prohibited. Keep the stainless steel elbows dry and well-ventilated, maintain the cleanliness of the equipment, and store them in accordance with the correct storage methods.
2.When using this equipment, the stainless steel elbow can be directly installed on the pipeline according to the connection method described, and the equipment can be executed according to the position of use. Under normal circumstances, the equipment can be placed at any position on the pipeline, but it needs to be inspected with convenient operation. Note that the flow of the medium cut off by the stainless steel elbow should be upward flow under the longitudinal valve, and the stainless steel elbow can only be a horizontal device. Stainless steel elbows should be sealed inside the equipment to prevent excessive leakage and affect the normal operation of the pipeline.
3.Stainless steel elbow ball valves, globe valves and gate valves are only allowed to be opened or closed, and the flow rate must not be adjusted to avoid corrosion of the sealing surface and accelerated wear. The gate valve and the upper threaded stop valve are equipped with an inverted sealing device, and the handwheel is fixed at the top to prevent the medium from leaking from the filling point.
4.Stainless steel elbow with handwheel. Do not use levers or other tools to avoid damaging the valve components. Turn the handwheel clockwise and close it, and vice versa.
5.The bolts of the packing cover of the stainless steel elbow valve should be tightened evenly and should not be compressed into a bent state to avoid touching or hindering the movement of the valve stem or causing leakage.
6.During use, stainless steel elbows should always be kept clean, and the transmission threads must proceed smoothly as planned. Once a fault is detected, use should be stopped immediately and the cause of the problem identified.
What should be noted during the construction process of wear-resistant elbows
When installing wear-resistant elbows, comprehensive factors such as soil quality and geology must be taken into consideration. The bearing temperature of the equipment or components that should be noted in the application of wear-resistant ceramic coatings. Due to the different temperatures of various equipment components, it is necessary to pay attention to the usage instructions of the equipment components during construction to avoid damaging the equipment. Depending on the different wear media and scouring rates, the structural thickness of air ducts, elbows and cyclone separators is generally20mmFor areas with severe local wear, such as the cutting cone hopper and the cleaning trough of the powder separator, the construction thickness can be increased to30mmor40mm.
The construction thickness is20mmUnder such conditions, after removing grease and paint, the steel mesh is directly welded to the main board of the equipment, with the weld point spacing being200mm≤300mmThen a mixture of wear-resistant ceramic dry powder, water and steel fibers that is evenly stirred on site.
Due to the fast curing speed of the ceramic coating at room temperature, the construction should be completed as soon as possible after each stirring. The construction time limit is generally as follows, depending on the different temperatures on site30min≤60minThe residual mixture cannot be used after curing.
When the construction thickness exceeds20mmIn such cases, isolation reinforcing bars need to be welded to the main plate of the equipment first. The construction thickness is30mmWhen, adopt6mmReinforcing bars The construction thickness is40mmWhen, adopt8mm～10mmReinforcing bars Then weld the steel mesh onto the reinforcing bars, and follow the stirring, coating procedures and construction thickness20mmThe time is the same.
If it is applied at high temperatures, such as a tertiary air valve, refractory castable should first be installed on the valve body. The thickness of the castable depends on the material used in the main board and the allowable heat consumption. Then weld the steel mesh onto the surface of the refractory castable and apply a wear-resistant ceramic coating. The use of oriented fibers enhances the toughness of the wear-resistant ceramic coating, endowing it with a certain ability to resist deformation. Therefore, whether it is installed on the equipment on site or hoisted after construction in the workshop, it will not affect the strength and service life of the wear-resistant elbow.
Foshan Weilihuang Trading Co., Ltd. is a leading manufacturer specializing in the production and sales of international and domestic stainless steel hardware accessories and its own brands. The company is located at Tianjinli Hardware Accessories Center, Lanshi 2nd Road, Chancheng District, Foshan City, Guangdong Province8seat10-12The number (i.e., the main entrance of the market) has an abundant supply of goods, a complete range of varieties, wide coverage, favorable prices, and stable and superior quality!
The company uses high-quality stainless steel and exquisite craftsmanship to ensure there are no weld marks at the interfaces. Its products feature novel designs, elegant craftsmanship, and long-lasting durability. The company has always adhered to the principle of quality first and reputation first. It is equipped with mature production facilities and has strong technical strength, thus ensuring the quality of its products. The company is willing to make unremitting efforts to join hands with our customers to create a win-win situation and provide high-quality products for our partners.
