1. What is a magnetic polishing machine and what is it used for?
A: A magnetic polishing machine is a precision deburring and polishing device that uses magnetic fields to drive stainless steel pins to rotate at high speed for all-round grinding of metal workpieces. It is mainly used to remove burrs on inner holes, slits, threads and edges of precision small parts, as well as chamfer and brighten workpiece surfaces.
2. What is the polishing principle of the magnetic polishing machine?
A: The electromagnetic plate at the bottom of the machine generates alternating magnetic fields, which drive the stainless steel needles in the tank to tumble at high speed and rub against workpieces. The micro-cutting effect of the needles removes burrs and polishes the surfaces for a brighter finish.
3. Will the magnetic steel pins scratch the surface of workpieces?
A: No scratches will occur if used with polishing fluid and processed for standard durations. Tiny scratches only appear when workpieces have sharp hard burrs, the machine runs empty for a long time, or iron debris is mixed in the steel pins.
4. How long does one polishing cycle take and what is its efficiency?
A: It takes 6-8 minutes for workpieces generally. Workpieces with slight tool marks and tiny burrs only need about 5 minutes, while those with heavy oxidation and coarse tool marks require 10 to 15 minutes. Multiple batches can be processed cyclically within one hour, making it ideal for mass production.
5. What causes workpieces to turn black and oxidize after polishing, and how to resolve this issue?
A: This problem is mostly caused by poor water quality, incorrect polishing liquid mixing ratio, and excessive processing time. Replace with clean water, prepare right polishing liquid according to the specified proportion, and rinse the workpieces with clean water immediately after processing then blow dry them.