Opening device on the market a wide AISI 4142 Sucker rod variety of species, hole different substrates, sharp teeth the effective cutting is very different, prices vary. At the time of purchase opening, generally we need to consider several factors, and try to find a balance between price and performance, while providing the best cost advantage, quality assurance process and productivity of parts.
(1) consider the number of holes to be machined
A common misconception is: carbide hole saw is always the best choice for the matrix material. High-performance carbide drill drilling can provide the highest rate and the shortest processing cycle. However, if the small number of machined hole, and the workpiece material is thin, low hardness, can be relatively inexpensive bimetal hole may be more cost advantages.
(2) Consider aperture size
Carbide drill bit diameter greater AISI 4145H Hole opener than 12mm expensive, but encountered stiff material, bimetal hole saw is not durable, how to do? Optional carbide hole saw, carbide hole saw, sharp teeth welded alloy made with good abrasion resistance temperature resistance.