Stainless steel No. 304 steel openings can be used with an ordinary hole opener.

Because the tool head of the stainless steel hole opener is carbide, although the hardness is very high, it is also very brittle. Therefore, when opening the hole, the feed should be stable, the feed amount should not be too large, especially when it is about to be cut through, the feed should be slower, the speed should be slow, the workpiece should be pressed, do not let the workpiece beat, and add some vinegar, the cutting will be very light, but also can extend the service life of the hole opener.

Stainless steel opener how to grind just durable?

For coarse grinding, use angular phase grinder to install fine grinding pieces (100 grains), and for fine grinding, use oil stone to sharpen the cutting edge.

Alloy hole opener is divided into many kinds, now on the market points (ordinary) specially open thin iron sheet, (practical type) specially open thin stainless steel, (mid-range type) specially open stainless steel, (high-grade type) specially open stainless steel (steel plate thickness can reach more than 2CM). High speed steel orifices are used in much the same way as alloy orifices. The difference is that the alloy hole opener is suitable for steel plate. High speed steel hole opener suitable for steel pipe.

Alloy hole opener can open stainless steel, 20mm iron sheet and a variety of steel, hardness is larger.

Bimetal hole opener is made of professional electron beam welding, and then after vacuum quenching, its teeth are sharp and durable, cutting edge is not easy to fall off, high stability. It is widely used in industrial cast steel, castings, automotive aluminum, engineering pipeline opening, iron plate opening, furniture wood opening, galvanized pipe, fire pipe, plastic, wood, gypsum board and other opening. The most common is the customer bought to open the iron plate.

(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.

Aluminum alloy material is a very common metal material in the hardware manufacturing industry. The hardness of aluminum alloy material is actually very low, and it is relatively easy to process. The difficulties of aluminum alloy drilling mainly lie in two points. The good twist drill is almost always faced with the phenomenon of wear and blade collapse. Today, Xiaobian will discuss with you what kind of twist drill should be used for drilling aluminum alloy parts.

If you want to find a twist drill suitable for processing aluminum parts, the first thing to confirm is to know what the customer's use of equipment is, is manual drilling or machine drilling, hand drilling is often used is bench drilling, and machine drilling is CNC machining center drilling or CNC drilling machine, or some modified drilling machine, Be sure to confirm the equipment used for the drill first.

Confirm the use of each other's equipment, then you can choose the raw materials of twist drill, if it is machine drilling then Xiaobian suggest alloy drill tungsten steel drill can be used, if it is hand drilling then high-speed steel drill is more suitable, the first machine drilling pursuit is to save labor costs, the second is high speed and stability, Although high speed steel drill is suitable for a variety of fields, but the biggest drawback of high speed steel drill is low hardness, the temperature increase in the selection of high speed steel drilling, many times will make high speed steel twist drill wear faster, and alloy drill is high hardness wear resistance, hand drilling with high speed steel twist drill is because of the high speed steel twist drill toughness is not easy to break, The disadvantage of alloy drill bit is that it is brittle without toughness, and it is easy to jump knife and break off when punching slightly unstable.

Focus on hardware manufacturing hole processing twist drill research and development and customization, for aluminum alloy aluminum parts drilling has its own unique technical understanding and process design, aluminum alloy sticking knife chip removal is not easy to receive inquiries almost every day, the problem is to want a processing deep hole aluminum parts chip removal non stick knife twist drill, most of the time said with table is nothing, Only do can really let people recognize, focus on aluminum drilling, whether it is deep hole or multistage step hole, non-standard customized aluminum parts dedicated drill worthy of your trust.