Scope of application of hard alloy hole opener: iron sheet, iron plate, stainless steel plate and other flat plates below 30mm.

The scope of application of the alloy hole opener is similar to that of high-speed steel, but due to the high hardness of the alloy head of the alloy hole opener, the hardness is above HR90 degrees, which is much greater than the HR60-70 degrees of high-speed steel, so it is generally used when encountering stainless steel plates. Choose the alloy hole opener, so the alloy hole opener is often called the special stainless steel hole opener in the market. The price of the alloy hole opener varies greatly according to the alloy and the material of the wool body.

Factors to consider when choosing a hole opener

There are various types of hole openers on the market, and the effective cutting of the base body and tooth tip of different hole openers is very different, and the price is also different. When buying a hole opener, you usually need to consider several main factors, and try to find a balance between price and performance, while providing the best cost advantage, while ensuring the processing quality and production efficiency of the parts.

(1) Consider the number of holes to be processed

A common misunderstanding is that cemented carbide is always the best choice for the base material of the hole opener. High-performance carbide drill bits can provide the highest drilling rate and the shortest machining cycle. However, if the number of holes to be processed is small, and the material to be processed is thin and the material has low hardness, it may be more cost-effective to use a relatively inexpensive bimetal hole opener.

(2) Consider the aperture size

Carbide drills with a diameter greater than 12mm are expensive, but what should I do when the material is hard and the bimetal hole opener is not durable? Can choose cemented carbide hole opener, cemented carbide hole opener, the tooth tip is welded by cemented carbide, which has good wear resistance and high temperature resistance.

(3) Consider the workpiece material

High-speed steel hole openers have good cutting performance when processing thin iron plates, but when drilling highly abrasive materials (such as cast iron or cast aluminum), the tool life will be greatly reduced. At this time, it is more suitable to choose industrial-grade bimetal for drilling. The device is used on a radial drill or bench drill.

Both high-speed steel and cemented carbide hole openers are suitable for stainless steel and similar materials. When processing these materials, if high precision is required, high-speed steel hole openers are recommended.

Due to the huge differences in processing materials, thickness and quantity, there is no "one size fits all" selection method. In short, a hole opener that can process high-quality parts at a reasonable cost and guarantee a safe and effective hole is a suitable hole opener.

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