双金属作为精密仪器的热敏元件,在制造中采用具有40～60％变形度的冷轧带双金属在制造和应用过程中产生的不均匀应力场,在温度—力的作用下逐渐发生力松驰,从而造成双金属形状与性能的改变。在实际应用中为了降低内应力和形成稳定组织结构必须进行稳定热处理。 最完善的消除残余应力的方法是把材料加热到再结晶温度范围使材料软化,并且使 Bimetal, as a thermal element of a precision instrument, uses a non-uniform stress field generated during the manufacture and application of a cold-rolled bimetal having a degree of deformation of 40 to 60% during its production, and gradually generates a force Relaxation, resulting in bimetal shape and performance changes. In practical applications in order to reduce the internal stress and the formation of stable structure must be stable heat treatment. The most complete way to eliminate residual stress is to heat the material to the recrystallization temperature range to soften the material,