Tension spring, also called extension spring, referred to as the spring, is a bear the axial tension of helical spring, in does not bear the load, the spring tension between the circle and circle are generally and tight and that there are no gaps. If it is used to stretch the spring of customers should be aware of the spring products after a certain period of time after the application will change. Then, what changes will occur during the application of the tension spring? Kaichuang spring machine's manager lee in the industry for many years, will affect the factors of the tension spring changes listed for your reference.
 
  ①Wear. The tension spring(CNC spring machine)will appear in a certain period of time after the use of a certain period of time. Generally speaking, the wear degree can be divided into three kinds: abrasive, fatigue and corrosive wear and tear.
 
  ②Brittle fracture. Most of the fracture phenomena occurred in the spring products(spring machine) are brittle fracture. Spring products only in a relatively high temperature state, it is the chance of plastic fracture. The project will break in fatigue, corrosion and hydrogen embrittlement fracture with application of such phenomena is called brittle fracture.
 
  ③Fatigue fracture. The tensile spring appears to be broken under the action of cyclic loading, which can be referred to as fatigue fracture.
 
  ④Corrosion fatigue fracture. Tensile spring(computer spring machine) in the cyclic loading and corrosive medium under the common action of the fracture phenomenon, can be referred to as corrosion fatigue fracture.
 
  ⑤Hydrogen embrittlement. Hydrogen embrittlement fracture is due to the spring production of the materials caused by, when the impurities in the material content is too high will lead to brittle fracture phenomenon. In addition CD brittle or brittle fracture phenomenon.
 
  ⑥Stress corrosion cracking. Under the action of tensile stress and corrosion medium, the tensile spring break can be referred to as stress corrosion cracking.
 
  In short, the above points are the inevitable changes in the long-term application of the tension spring, and of course the time and speed of this change should be determined by the working conditions of the tensile spring. This is because the change in the application process of the tensile spring, the main factors and the working environment. The article originates from Kaichuang spring machine: http://www.kcmcnc.com/en/.