El trueque es el presente y el futuro del comercio internacional, especialmente para las personas que se inician en el negocio de importación y exportación. El trueque y más, operaciones triangulares.
La segmentación perfecta para sus propuestas de negocio, Sus lugares de destino, además de su clase de clientes objetivo, además de sus artículos y categorías.
Hydraulic cylinder is the coal mine working face in the utilization rate can be said to be very high, as the hydraulic support components support the entire working face, to ensure the safe production of the working face, so important accessories how to measure the quality of performance?
Lower starting pressure: it refers to the lower working pressure of the hydraulic cylinder in the absence of any load. It is the composite index reflecting the manufacturing and assembly precision of the hydraulic cylinder parts and the size of the sealing friction force.
Low stable speed: it refers to the low operating speed when the hydraulic cylinder is moving at full load without crawling phenomenon. There is no agreed standard. The hydraulic cylinder undertaking different work has different requirements for low stable speed.
External leakage: an important indicator to measure the quality of hydraulic cylinders.
Internal leakage: The internal leakage of the hydraulic cylinder will reduce the volume efficiency, increase the temperature rise of the oil, affect the positioning and accuracy of the hydraulic cylinder, so that the hydraulic cylinder cannot be accurately and stably stopped at a certain position, so it is one of the main indicators of the hydraulic cylinder.
Nano damage: extend the oil cylinder completely and carefully check for surface damage phenomena such as bump, pull, welding slag, etc. For example, the surface damage position is located at < 20cm of the cylinder body, and the damage depth is < 5mm. Timely repair should be carried out to prevent the oil cylinder seal from being damaged for a long time. Welding slag is strictly prohibited on the surface of oil cylinder.
The above is the hydraulic cylinder quality performance measurement content, we also according to their own hydraulic cylinder use case to judge it. More hydraulic cylinder related information attention Henan Shuanzhi.
