1. Is the material for crushing sand strictly controlled? Many crusher feeds from stone mills exceed the factory size requirements.
2. Is on-site management of field technicians in place? Every stone factory must have one or more professional technical administrators.
3. Is the regular maintenance of crusher equipment in place? Continuous operation of crusher equipment should be diligently added and maintained to avoid excessive loss of equipment.
Whether or not the crusher equipment can perform super-performance can be judged based on the above points. How advanced the technology of the crusher equipment is, how low the output caused by improper human operation is, and the rapid wear of the equipment is the direct cause of the failure to achieve high production.
222
Forstner bits, flat-bottomed to drill holes in wood materials, they can cut on the edge of a block of wood, and can cut overlapping holes; for such applications they are normally used in drill presses or lathes rather than in hand-held electric drills. Because of the flat bottom of the hole, they are useful for drilling through veneer already glued to add an inlay.
The bit includes a center point which guides it throughout the cut (and incidentally spoils the otherwise flat bottom of the hole). The cylindrical cutter around the perimeter shears the wood fibers at the edge of the bore, and also helps guide the bit into the material more precisely.
Forstner bits have radial cutting edges to plane off the material at the bottom of the hole. The bits shown in the images have two radial edges; other designs may have more. Forstner bits have no mechanism to clear chips from the hole, and therefore must be pulled out periodically.
Forstner Bits,bosch forstner bits,colt forstner bits
Behappy Crafts (suzhou)Co.,Ltd , https://www.haoyuebehappy.com