Application range of carbide hole opener: iron sheet, iron plate, stainless steel plate and other 30mm below the plate.

The application range of alloy hole opener is similar to high speed steel, but because the alloy head of the alloy hole opener has high hardness, the hardness is more than HR90 degrees, far more than HR60-70 degrees of high speed steel, so in the stainless steel plate when the general choice of alloy hole opener, so the alloy hole opener is often called stainless steel special hole opener in the market. The price of alloy hole openers varies greatly depending on the alloy and the material of the wool body.

Factors to consider when selecting a hole opener

There are various kinds of hole openers on the market. There are great differences in effective cutting of matrix and tip of different hole openers, and the prices are also different. When buying a hole opener, it is usually necessary to consider several main factors and try to find a balance between price and performance, while providing a cost advantage while ensuring the machining quality and production efficiency of the parts.

(1) Consider the number of holes to be processed

A common misconception is that carbide is always the base material of choice for the hole opener. High performance carbide bits provide drilling rates and machining cycles. However, if the number of holes to be machined is small and the material to be machined is thin and the material hardness is low, it may be more cost advantageous to use a cheaper bimetal hole opener.

(2) Consider the aperture size

Carbide drill bits larger than 12mm in diameter are expensive, but when the material is hard and the bimetal hole opener is not durable, what do you do? Optional hard alloy hole opener, hard alloy hole opener, tooth tip welded by hard alloy, has good wear resistance and high temperature resistance.

(3) Consider the material of the workpiece

High speed steel orifice cutters have good machinability when machining thin iron plates. However, when drilling high abrasive materials (such as cast iron or cast aluminum), the tool life will be greatly reduced. At this time, it is more suitable for industrial grade bimetal orifice cutters to be used in rocker arm drill or bench drill.

Stainless steel and similar materials are suitable for high speed steel and carbide hole cutters. When processing these materials, if high precision is required, it is recommended to use high speed steel hole opener.

Because processing materials and thickness, quantity requirements vary, so there is not a "one-size-fits-all" selection method. In a word, the hole opener that can process high quality parts at a reasonable cost and ensure safety and effectiveness is the right hole opener.