Metal material on the properties of weighing sensor specific influence what are the three points

Elastic element metal materials the harm, the characteristics of the weighing sensor is the key raw material of elastic modulus, anelastic utility and the dangers of thermoelastic utility. Next, how fast to hear weighing sensor manufacturers engineer said: 1, the dangers of metal material elastic modulus is refers to the elastic modulus of profitability and temperature index, the accuracy of the weighing sensor and profitability. General everyone find metal materials in the market share within a certain limit, the elastic modulus E is constant, it is not harsh. In fact, only is within a certain range of elastic modulus is more close to the constant. Conditioning treatment of metal material which is not the same as the standard, the elastic modulus is constant judgment ability is also different. Production practice experience, weighing sensor manufacturing company in our country to use more carbon in the carbon steel 40 crnimoa, experience after heat treatment and conditioning treatment solution, its tensile strength in HRC39 fluctuation; 35 crmnsia tensile strength at HRC42, elastic modulus of profitability, best to constant. Most of the elastic modulus of metal material, temperature rise and then reduced, the relationship between elastic modulus and temperature regulation is not only the linear elastic modulus with temperature turns, be very smoothly, and that is good for weighing sensor sensitivity to temperature compensation. Under the condition of dynamic weighing applications of weighing sensor, also rules under vibration and devastating conditions, the raw material of the elastic element elastic modulus does not change or changes very little. So as far as possible using elastic modulus E and relative density of rho after multiplying E rho counting small metal materials. 2, the harm of anelastic utility anyway anelasticity of metal material, metallic materials is in the range of elastic deformation, in addition with a slightly the shape change of stress field and the judgment middle hooke don't comply with the laws of motion, deviation caused by the discrete system. There are many forms, including aging, is the key to elastic aftereffect ( The stress relaxation) And so on. 3, the dangers of metal materials thermal elastic effect depends on temperature, frequency, temperature index and the thermal expansion coefficient of elastic modulus E. Weighing sensor factory engineer said, at last: metal materials the thermoelastic effect of symmetric weight sensor temperature characteristic is very unfavorable. With a low beta E and beta f metal materials weighing sensor elastic element is necessary.
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