Many medical equipment manufacturers often do not know how to choose when purchasing medical springs. So today Chuangda Gaoxin will use the following factors to explain to you how to choose medical springs correctly. Generally, when choosing a spring for medical devices, it needs to be determined according to the nature of the load that the tension spring bears, working environment, temperature, and technology.
First of all, when confirming the shape and scale of the data section, it is first necessary to select the scale required by the country, and do not choose non-standard specifications.
Regarding the tension springs for medium and small medical devices, mainly spiral tension tension springs. The strengthened steel wires are the first to be selected. Lead bath isothermal cold drawn steel wires and oil quenched tempered steel wires have very high strength and good appearance. The quality and fatigue function of steel wire are higher than that of general quenched and tempered steel wire. It is very simple, has very good process functions and stable quality.
After the carbon cable spring wire and piano wire are cold drawn, a very large residual stress may occur. After the spring is processed, there may be a very large residual stress. The scale change after tempering is very large, and it is difficult to control the scale accuracy. . Oil-quenched and tempered steel wire is modulated and strengthened after the steel wire is drawn to a regular size. There is basically no remaining stress. After the tension spring is formed, it is tempered at low temperature, the size changes little, and the heat resistance stability is better than Cold drawn reinforced steel wire.
For large and medium-sized medical device springs, cold-drawn or cold-drawn polished steel should be used for high load accuracy and stress. For tension springs with lower load accuracy and stress, hot-rolled steel can be used.