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Features and types of drill bits for metal — good to know
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Today let's talk about how to choose the right metal drill bit and how to exploit it. Find out what are the different kinds of drills, features of their coverage and treatment, structural differences.
Drilling plastic and metal — probably the most common operation during the repair works at home and in professional activities. Usually, it is performed with a single drill, because both materials monolithic structure, although different density. In this regard, metal drills are suitable for plastic and virtually no wear.
Design features of drill bits for metal
All drill bits for metal, is the same. It is dvuhnitochnyj helical rod, which has two sharpened edges. This design can withstand heavy loads during drilling, she fears neither distortions nor blows.
The grooves for chip removal. The edge – cutting element, in addition, it performs an auxiliary function: picks up small remnants of metal (podshlifovyvat hole).
There are special drills that have one edge and special sharpening, they are used at munitions factories and other specialized industries.
Ordinary metal drillsof the"Ordinary" drill is a term conventional, as it's actually a metal drill bit. The most simple and reliable design of this drill – the edges of the ribbon are sharpened with 118° angle (±30) to each other. This sharpening allows you to quickly repair the drill, undermined him with the help of any tool with an abrasive or a regular file. Even a broken drill bit can be sharpened for a couple of minutes and use again.
The sharpening angle of the edge is allowed to change depending on the situation, of course, that this will change its length, because the sharper the edge angle, the longer. The cutting edge surface is the place where the maximum heat load that occurs from friction. It turns out, the smaller the edge, the higher the temperature in the area of drilling. It is clear that the overheating of the drill bit it can fail.
We conclude: the higher the strength of the material to be drilled, the greater should be the angle between the edges and more elongated cutting part.
Drill for sheet metal,this tool has two cones, formed by sharpening the edges of the edges and the guide spike. There is an option edges without angle, with minimal contact area. This drill is not broken, the edge of the sheet during drilling, it does not wedge in the hole.
There are other varieties, but they are designed to work in the factory, house of cases, their application simply does not.
The choice of drill bits for metalWhen looking for a set or individual drills in the first place to pay attention to the manufacturer. All firms that produce tools and machines do have the capacity to produce their own guns for them – drills, drills, milling cutters, etc. Branded tool is the most reliable and simple way to understand the range. Company type: DeWalt, Makita, Hilti, BOSCH, and other reliable manufacturers provide warranty on their products.
The following important factor is color of the drill. For example, the drill itself is made from steel of good quality. But during production, products are often subjected to additional processing for improved performance:
Steel grey – non-coated drills. They do not have additional treatment. That's not good, because the relatively weak steel withstands corrosion and damage. If the color is black, it was done steaming, which increases the strength and prolongs the durability of the product. Golden hue says about "stress relief" with red-hot metal. These drill bits are very strong, but the presence of internal stresses makes them fragile. So if you periodically change the temperature, the voltage is removed, drill and gain strength. Bright Golden color indicates that the processing was made with titanium nitride. This coating reduces friction and adds to product durability. Refers to the premium class. Marking drills for standardized alphabetic symbols for the world market. Latin letters are also present on the products of the Russian, Ukrainian and Belarusian companies (where the use GOST). The product quality is regulated by GOST 19265-73 "high speed tool steel for the manufacture of drill bits for metal." Usually steel R6M5 (with molybdenum additive 5%).
What would be a good drill you bought, it has to be properly operated and promptly sharpen. Then the tool will last a long time. Use a drill only for its intended purpose, then you will save your time and will not lose money on the constant replacement of drills. published
P. S. And remember, only by changing their consumption — together we change the world! © Join us at Facebook , Vkontakte, Odnoklassniki
Source: homester.com.ua/dacha-sad/dom/sverla/
Drilling plastic and metal — probably the most common operation during the repair works at home and in professional activities. Usually, it is performed with a single drill, because both materials monolithic structure, although different density. In this regard, metal drills are suitable for plastic and virtually no wear.
Design features of drill bits for metal
All drill bits for metal, is the same. It is dvuhnitochnyj helical rod, which has two sharpened edges. This design can withstand heavy loads during drilling, she fears neither distortions nor blows.
The grooves for chip removal. The edge – cutting element, in addition, it performs an auxiliary function: picks up small remnants of metal (podshlifovyvat hole).
There are special drills that have one edge and special sharpening, they are used at munitions factories and other specialized industries.
Ordinary metal drillsof the"Ordinary" drill is a term conventional, as it's actually a metal drill bit. The most simple and reliable design of this drill – the edges of the ribbon are sharpened with 118° angle (±30) to each other. This sharpening allows you to quickly repair the drill, undermined him with the help of any tool with an abrasive or a regular file. Even a broken drill bit can be sharpened for a couple of minutes and use again.
The sharpening angle of the edge is allowed to change depending on the situation, of course, that this will change its length, because the sharper the edge angle, the longer. The cutting edge surface is the place where the maximum heat load that occurs from friction. It turns out, the smaller the edge, the higher the temperature in the area of drilling. It is clear that the overheating of the drill bit it can fail.
We conclude: the higher the strength of the material to be drilled, the greater should be the angle between the edges and more elongated cutting part.
Drill for sheet metal,this tool has two cones, formed by sharpening the edges of the edges and the guide spike. There is an option edges without angle, with minimal contact area. This drill is not broken, the edge of the sheet during drilling, it does not wedge in the hole.
- Castellated or stepped drill bit
- Odnokratnye gun or drill
- For deep hole drilling
There are other varieties, but they are designed to work in the factory, house of cases, their application simply does not.
The choice of drill bits for metalWhen looking for a set or individual drills in the first place to pay attention to the manufacturer. All firms that produce tools and machines do have the capacity to produce their own guns for them – drills, drills, milling cutters, etc. Branded tool is the most reliable and simple way to understand the range. Company type: DeWalt, Makita, Hilti, BOSCH, and other reliable manufacturers provide warranty on their products.
The following important factor is color of the drill. For example, the drill itself is made from steel of good quality. But during production, products are often subjected to additional processing for improved performance:
Steel grey – non-coated drills. They do not have additional treatment. That's not good, because the relatively weak steel withstands corrosion and damage. If the color is black, it was done steaming, which increases the strength and prolongs the durability of the product. Golden hue says about "stress relief" with red-hot metal. These drill bits are very strong, but the presence of internal stresses makes them fragile. So if you periodically change the temperature, the voltage is removed, drill and gain strength. Bright Golden color indicates that the processing was made with titanium nitride. This coating reduces friction and adds to product durability. Refers to the premium class. Marking drills for standardized alphabetic symbols for the world market. Latin letters are also present on the products of the Russian, Ukrainian and Belarusian companies (where the use GOST). The product quality is regulated by GOST 19265-73 "high speed tool steel for the manufacture of drill bits for metal." Usually steel R6M5 (with molybdenum additive 5%).
What would be a good drill you bought, it has to be properly operated and promptly sharpen. Then the tool will last a long time. Use a drill only for its intended purpose, then you will save your time and will not lose money on the constant replacement of drills. published
P. S. And remember, only by changing their consumption — together we change the world! © Join us at Facebook , Vkontakte, Odnoklassniki
Source: homester.com.ua/dacha-sad/dom/sverla/
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