uhp 450mm graphite electrode with low resistivity for arc furnace
Ulanchabu uhp 450mm graphite electrode with low resistivity for arc furnace high-speed machining strategy
Usually uhp 450mm graphite electrode with low resistivity for arc furnace is carried out on a whole piece of material, the machining allowance is easy to describe, and its machining goal is to remove the largest amount of material in the shortest time. Rough machining can adopt profiling milling or contour milling.
Profile milling adopts ball-end milling cutter, cutting depth and cutting width are changing, cutting depth is small, tool wear is fast, and processing time is long; contour milling adopts flat-end milling cutter, processing time is short, and tool wear is small. In contour milling, milling can be carried out along the envelope track, that is, the machined surface is fed in a zigzag shape and then processed after milling. The cutting width is fixed and there is not much reciprocating motion. A large feed can be achieved through rapid processing. .
The processing along the contour track is to use the traditional processing method to process the partial contour surface in sequence. The pros and cons of the rough machining process depend on the CNC programming according to the tool surface contour curve function, which enables fast and easy milling along the contour of the envelope. Finishing should make the processing stable, with small shape errors and good surface quality, and at the same time, the amount of tool wear is small.
Tool wear and machining costs are the main considerations. In finishing machining, the treatment of corners should consider the influence of milling direction on machining accuracy and surface quality, the latter being related to tool load and machine tool vibration. When feeding and milling along the curved surface, there will be pull milling (upward feed) or drilling and milling (downward feed), and the deformation of the tool will cause the deviation of the workpiece contour. The contour deviation of drilling and milling is smaller than that of pull milling, and the contour deviation of up-milling is better than that of down milling.
Therefore, considering the critical conditions of tool quality and the stability and reliability of the machining process, the best strategy for milling along the plane profile should be a combination of up-milling and plane profile milling. In addition, during down milling, the cutting tool life of envelope contour milling is longer than that of drilling and milling, and the two are about the same during up milling.