Aisi 2mm 304 316 2b stainless steel plate will have thickness difference, why?
1. The effect of temperature changes. The effect of temperature change of metallurgical spare parts on the thickness fluctuation of aisi 2mm 304 316 2b stainless steel plate in rolling equipment is essentially the effect of temperature difference on thickness fluctuation. The temperature fluctuation is mainly caused by the influence of metal deformation resistance and friction factor.
2. The effect of tension changes. Tension is to change the metal deformation resistance of the rolling equipment by affecting the stress state, thereby causing the thickness to change. The change of tension of metallurgical spare parts not only affects the thickness of the head and tail of the strip, but also affects the thickness of other parts of the aisi 2mm 304 316 2b stainless steel plate. When the tension is too large, it will affect the thickness and even change the width. Therefore, in the process of hot tandem rolling, the constant small tension rolling of the micro looper is generally used, while the cold tandem rolling is rolled in a cold state, and the material is processed. Hardening makes it very resistant to deformation.
It is difficult to obtain the required reduction ratio only by adjusting the roll gap of the rolling equipment to change the rolling force, so it is necessary to use a large inter-stand tension for rolling. High tension is the most important feature of cold rolling production. The role of tension of metallurgical spare parts includes: reducing rolling force, reducing rolling energy consumption; preventing strip deviation; controlling strip shape and strip thickness.
3. The effect of speed changes. The speed mainly works by changing the pressure and the reduction amount by the friction factor, deformation resistance and bearing oil film thickness.
4. The influence of roll gap change. When the aisi 2mm 304 316 2b stainless steel plate is processed, the roll gap of the rolling equipment will change due to the thermal expansion of the rolling mill components, the wear of the roll gap and the eccentricity of the roll, which directly affects the actual rolling thickness change. The periodic change of the roll gap caused by the eccentricity of the metallurgical spare rolls and bearings will cause high-frequency periodic thickness fluctuations in the case of high-speed rolling.
The above four reasons are the reasons for the difference in thickness of aisi 2mm 304 316 2b stainless steel plate.