80 thickness will be deformed. Rough milling requires low-speed feed, and this kind of workpiece cannot be processed at one time and needs aging. If the area is large and the flatness requirement is high, it is necessary to turn the workpiece over repeatedly for fine cleaning. Haven't you heard that turning is afraid of long rods and milling is afraid of thin plates? The worse the steel plate material, the greater the deformation. You don't understand, and there are no craftsmen in your family? You may not have loosened the pressure here, so it's easy to change it to one millimeter when you take it off and put it in the first shift. Basic aging shall not be less than 48 hours, and vibration aging or normalizing treatment shall be provided before rough machining.
200 cutterhead should adopt 75 cutterhead, the rotation speed is about 160, and the feed speed is about 300.