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With cooling you ensure that the surface quality is optimal, the temperature is lowered and the chips are swept away. This extends the life of the drill

The point angle is located at the head of the twist drill. For hard materials such as stainless steel, the point angle should be large and e.g. 130° or 135°. For soft materials, point angles of e.g. 118° are used.

Stainless steel is a metallic material which is characterized by its special purity . There are alloyed and unalloyed steel, but only the alloyed variant is also stainless.

When Krunal Patel saw the for-sale ad for a rural P.E.I. convenience store, he saw an opportunity.He has only owned Harvey's General Store in Crapaud for about two months, but he already has some big plans in motion, such as getting a liquor license.“For me, it's a good opportunity to grow this business,” he said.But he didn't buy just any store. Harvey's has long served the town of Crapaud as its go-to grocer and community hub. Former owner Aletha Harvey, who took over the store back in 1961, said many locals use it as a gathering spot every morning to kick off their days.“They have a cup of coffee, then they go to work,” she said.Over the years, Aletha hasn't seen much change to the business, which is located on Route 13 just off the Trans-Canada Highway, but it has always been bustling. The store stayed in the family when her son, Doug, took over and ran it for about 25 years before deciding the time was right to find a new owner.Originally from India, Patel has a family background in this line of business, and he managed a store in Toronto before taking on this opportunity. The idea of running a community store in a small town appealed to him, so the Harveys have been helping him transition in as they transition out.“Till he gets his feet on the ground and all that stuff,” Doug said.Among Patel's proposed changes are a few renovations and adding a liquor section _ which would offer beverages such as beer and wine. While he hasn't secured a license with the province yet, Patel's hopeful about his application and has tons of support from the community, he said.He believes selling liquor would allow him to better serve the region's locals, so they don't have to travel as far for it. As well, being right beside the highway means Harvey's already gets lots of customers travelling off the Confederation Bridge toward Charlottetown, which a liquor section would amplify, he said.“It will draw more people in.”Aside from the potential additions, Patel's main goal is to continue providing customers with whatever they might need, he said.“Since I came to Canada, it was my dream that I buy a convenience store,” he said. “I'm trying my best to serve all the surrounding communities here.”It's what Joanne Harvey likes best about the store. She can attest to how integral Harvey's is for the local population. In an area where everybody knows everybody, it's become a service that's only a phone call away if there's something people need.“I think it is a lifeline for most people,” she said. “If you need us, call us.”

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If you do not have a pillar drill available, use the pointed side of the punch and a hammer to make a small recess in your stainless steel workpiece. This gives you better guidance and prevents slippage when drilling. The center punching compresses the material a bit, but mainly the material is displaced to the side and over the top of the material. This does not pose any extreme challenges for the twist drill.

In each of our product groups you will find a Product finder. Under Products > Twist drills you can filter "stainless steel" in the field Applications. You will then be shown all twist drills that can be used for cutting stainless steel.

The spiral angle determines the process of chip formation. Small spiral angles are used for hard short-chipping materials.

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What features does the twist drill have to have in order to cut stainless steel? The following criteria must be met in order to obtain a good drilling result.

If you want to use a coating, e.g. to increase the tool life, it should be at least the TiAlN coating, because it has a high heat resistance. With TiAlN-coated drills, cooling is not necessarily required. In addition, they prevent cold welding on the drill.

You want to drill a hole in stainless steel but don't know which twist drill to use? In this article we explain how to drill in stainless steel and which twist drills to use.

You should not wear gloves, because they can get caught in the twist drill. In contrast to the gloves, you should unconditionally put on protective goggles.

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In our detailed article "8 features of a twist drill and its functions" you will learn all the important features of twist drills and which functions they have when drilling.

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With a large point angle, more of the cutting edge engages in the workpiece when drilling. This also means that more force is applied to the workpiece and higher contact pressure (high feed) is required.

You have chosen a suitable twist drill and now you finally want to drill your hole in stainless steel. When drilling, it is important that you

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In the application table you will find all our twist drills with which you can drill in stainless steel. If you click on the images of the twist drills in the PDF, you will be taken directly to the product page where you can find detailed information about the twist drill.

The break sensitivity in comparison to HSS is higher in HSSE-Co or carbide tool steels. Basically you can negate this with the correct application (correct speed, feed and cooling). In general, the more cobalt, the harder and therefore more brittle the drill.

If possible, use a pillar drilling machine as it allows you to better control the centering, speed and feed . High feed rate is required and your speed is rather low when drilling.

You should not have used the twist drill on other steels before. The metal particles on the twist drill can attack the stainless steel and make it susceptible to corrosion.

Stainless steel is a very hard material and therefore difficult to cut. Therefore, the tool steel of the twist drill should be made of HSSE-Co 5 (5% cobalt content), HSSE-Co 8 (8% cobalt content) or solid carbide.

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If you have found the right twist drill and follow these instructions, you will get a good drilling result in stainless steel.

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A tool steel that is too soft would immediately overheat. So since stainless steel is a hard material, you need a twist drill type H. In the course of time, the features of twist drills have been combined differently in order to optimize them for special applications. Thus, mixtures have formed whose naming system is not standardized in the DIN manual. So you will find at RUKO for use in stainless steel types VA, FO, UTL3000, UNI, TL3000, N and UTL.

With cooling you ensure that the surface quality is optimal, the temperature is lowered and the chips are swept away. This extends the life of the drill

The twist drills made of HSSE-Co 5, HSSE-Co 8 or solid carbide do not neccesarily need coating . Coated drills are still ideally suited for industrial use. I.e. fast speeds (high cutting speeds), high feed rates and increased heat applications.

Under certain conditions (e.g. type of stainless steel, point angle, spiral angle etc.) you can also use a TiAlN-coated HSS drill. There are some stainless steels that are easy to cut and can also be drilled with coated HSS drills.

Since stainless steel is a very hard material, you have to choose the right twist drill. The twist drill should belong to the application group Type H of the DIN 1386 division. Over time, however, mixed forms have been developed whose naming systems are not standardized in the DIN manual. So you will find at RUKO for the use in stainless steel the types VA, FO, UTL3000, UNI, TL3000, N and UTL.

See the table below for information on the speed and feed settings and the type of cooling. You can download the speed table as a PDF file. Click on the image.

In stainless steel, it must be enriched with alloying elements such as titanium, niobium or chromium in addition to iron. Chromium (Cr) is the corrosion resistance of stainless steel and should have a minimum content of 12% and an extremely low carbon content. The chromium content creates a layer on the material surface which permanently protects against water and moisture.