About The Manufacture Of Electromagnet Coil Skeleton Magnetic Isolation Rings In Skeleton Crack Phenomenon Research

Hydraulic control system is now widely used in aerospace and other fields. In this system, a number of high performance solenoid valves are increasingly used in the control of oil.This paper studied the CT-50is formed in the solenoid type electromagnetic valve part, compared with the other conventional solenoid, not only able to complete the simple closure and before opening the action, but also require frequent opening and closing in fast and flexible action, the delay and the probability of the emergence of vibration to a minimum. In the CT-50model coil of the electromagnet is precisely because every bead added (separated magnetic ring’s main role is to generate magnetic shunt to prevent magnetic short circuit), effectively avoid the delay phenomenon. Across the magnetic poles on the two different time produced a pulse of zero flux. This ensures that the magnetic force is always greater than zero, it will not vibrate.In the process of making bobbin by adding every bead, which makes the process more complicated.That is, from a metal bar is made by machining, coil into the top and bottom of the current interference fit after soldering, to form a septum ring made from brass welding, and the final made by machining. But in the actual production and processing, since the upper and lower coil size parameters related to the amount of interference and poor choice, and then after brazing, machining after molding, the tightness test and magnetic particle testing found, magnetic coil appears at the bottom of every point of linear or linear circumferential crack, and this phenomenon is in batches. This allows the production of the skeleton of the coil yield reduction, and a corresponding increase in the cost of production.In the interference fit in the sleeve the selection of the amount of interference contact surface directly affect their state of Von Mises stress. The greater the amount of interference, Von Mises stress of the greater of this view is not accurate,which also affected by the sleeve diameter and other dimensions. This article will coil up and down for the Ministry of finite element modeling, select a different size parameters and the amount of interference using the finite element contact analysis of its, maximum Von Mises stress obtained. Arrangements as the basis for the Orthogonal Experiment, using range analysis techniques analyze the impact of computing the maximum Von Mises stress of the main factors, for optimal size parameters, and as a test of its validation and improvement of related processes as a theoretical basis.