Tel： 18014002389 / 16606262180
There are two kinds of measuring force sensor processing technology, one is the heat treatment method, the other is the mechanical treatment method. Today we mainly talk about the heat treatment method to see what characteristics of the treatment process. In the production process, the sensor will use the technological means to stabilize it as soon as possible, because the initial unstable period needs to release the residual stress to stabilize, and in addition to the temperature aging and the electric aging treatment often used in the processing manufacturing process, it also needs Heat treatment and mechanical treatment. How is the heat treatment process carried out?
Force sensor
The treatment process method is often applied to aluminum alloy load cells. When will it be performed? After the blanks are processed into elastic elements, there are mainly three methods here, namely, the reverse quenching method, the hot and cold cycle method and the constant temperature aging method. Let's talk about it in detail below.
What is the anti-quenching method? Also known as deep cryogenic method, aluminum alloy elastic elements are placed in liquid nitrogen at -196°C, and after 12 hours of heat preservation, they are quickly sprayed with fresh steam or injected into boiling water. Because the direction of stress generated by deep cold and rapid heat is opposite and cancel each other, the purpose of releasing residual stress is achieved. The test shows that the use of liquid nitrogen - high-speed steam method can reduce the residual stress of 84%, the use of liquid nitrogen - boiling water method can reduce the residual stress of 50%.
So what is hot and cold circulation? Cold and heat cycle stability treatment process - 196 °C × 4 hours / 190 °C × 4 hours, cycle 3 times, the residual stress can be reduced by about 90%, and the organizational structure is stable, micro-plastic deformation resistance, dimensional stability. The effect of releasing the residual stress is so obvious. First, because the atomic thermal motion energy increases during heating, the lattice distortion decreases or disappears, and the internal stress decreases. The higher the upper limit temperature, the greater the plasticity of the atomic heat movement and the better the residual stress. freed. The second is that the thermal stress generated by the gradient of hot and cold temperatures interacts with the residual stress, causing it to redistribute to obtain the effect of decreasing residual stress.
Force sensor
Finally, we talk about the constant temperature aging method, thermostat aging can eliminate the residual stress generated by machining, but also eliminate the heat treatment introduced by the residual stress. When LY12 hard aluminum alloy is aged at a constant temperature of 200°C, the relationship between the release of residual stress and the aging time shows that if the temperature is kept for 24 hours, the residual stress can be reduced by about 50%.