When drilling than to lubricate the drill. Drilling stainless steel in industrial and home conditions

How to lubricate the drill when drilling

Aluminum is considered soft and supple material, but despite this, can do without a lubricant-coolest liquid (coolant) at all, it will not work. When working with this metal, a lot of waste is formed in the form of shavings, which, sticking on it, clogs the tool, especially concerns the cutter, and interferes with further work. This can also lead to a complete breakdown of equipment. Therefore, co.Cozing of aluminum should guarantee the quality of finishing processing. For these purposes, compounds based on glycerol, ethylene glycol, or fatty acids are perfect.

Strong warming up when drilling is a serious problem. At the place of contact of the tool and workpiece, the temperature reaches hundreds of degrees Celsius.

With strong warm.Up, the materials begin to burn or melt. This applies to both drills and processed metals.

How To Drill Stainless Steel: 6 Tips

drilling, lubricate, drill, stainless, steel
  • The steel from which the tool is made is a strong heating loses hardness. As a result, the cutting edges wear out quickly. This leads to a significant increase in friction force. Because of this, the processing efficiency is reduced, and the drills quickly fail. Apply a lubricant-cooping liquid (coolant) is necessary even when using carbide drills.
  • Strong warming, if the part begins to melt, will affect the quality and geometry of the hole. This in many cases is unacceptable.
  • Another side effect from drilling metal without lubrication is the rapid wear of the engines of drilling machines. Constant overload leads to him. Bottom line. Expensive repairs.

It is these problems that solve lubricants and cooler fluids.

Note! In no case can you use inappropriate improvised means (water, solvents, “non.Freezing”, alcohol, and a fluid for washing glasses, etc.). For example, the use of water instead of recommended coolants leads to corrosion destruction of blanks, as well as workers of the machine tools.

drilling, lubricate, drill, stainless, steel

Drilling springs

In order to drill a leaf of springs, you need to use a variety of equipment and tools:

Electric drills are a special tool that is most often used for various work during repair. Drinks are powered from a network with a voltage of 220 V or a battery block. As a power element, electric motors with a capacity of 500. 1200 watts are used in drones, and to change speed, the speed of rotation speeds and a speed controller are used.

If necessary, when it is required to drill a hole in the spring springs in a workshop to carry out operations, various types of machines can be used:

Most often, vertically-warlid machines are used to perform openings drilling operations, which provide the necessary processing speed and accuracy.

The springs sheet are made of metal with high strength and for processing requires special technology and the use of particularly durable.

The process of drilling springs at home is divided into several operations:

  • A point where drilling will be carried out is applied to the sheet with the help of a felt.Tip pen and a notch is made with a core.
  • In order to make a hole in the spring, it is necessary to use 3 drills having a different diameter, for example, for a hole of 10 mm, it is necessary to use drill with a diameter of 3, 6, 10 mm, which greatly simplifies the complexity of the operation and reduces the possibility of overheating. When drilling, a drill and a place on the metal are necessary periodically, where processing is carried out, it is necessary to lubricate with machine oil, which allows you to reduce the load and at the same time cool the contacting working surfaces.

When using an electric drill, it is necessary to select a model with a power of 1. 1.2 kW and equipped with a control speed controller of a clamp cartridge. Recommended revolutions necessary for drilling the sheet are in the range of 500. 1000 rpm. In order to drill a sheet, you can also use a sparkle with a low rotation speed of a working shaft. It is also necessary to attach moderate force at pressure on the drill when drilling. During the working process, the blunt drill must be sharpened in a timely manner to reduce heating and accelerating the drilling. To facilitate the sharpening of drills, it is better to use a special device with mandatory observance of the symmetry of the central part of the drill. Violation of centering leads to the formation of holes of a larger diameter than necessary. The edges must be the same size. The angle of sharpening should correspond to 120 °, which is suitable for working with most materials.

  • Before drill the sheet, it is necessary to make its rigid fixation depending on the equipment used using a vice, clamp or special clamps.
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To reduce the load on the equipment and the tool, you can also use the drilling method when the springs sheet are previously heated. To do this, an exact mark is applied to the springs sheet with a felt.Tip pen, where a notch will be drilled and a notch is done with a core, then the springs sheet are heated using a gas burner and the openings of the required diameter is drilled. To restore the characteristics, the sheet is reduced again on the burner and is cooled in a bath with butter (hardened).

Basic tips for drilling metal with coronet drill

It is necessary to use a special pin to make centering for the drill.

You should turn the hole in the marking, place the pin in the recess, and then drive the magnet. When these actions are performed, it will be necessary to re.Check where the pin is located. Since there are situations when the magnet turns on, then you can observe what the tripod shift occurs.

Select the required speed.

When working, it is extremely important to choose the right speed. What speed is better to choose to rotate the drill depends on the diameter of the material that is processed. The table below shows recommendations regarding how to choose the right speed. The wrong choice may affect the quality of work and the life of the tool.

It should be remembered that you can not work with the tool when the speed is chosen above the recommended. You can deviate from the recommended values, but slightly. Thus, it is allowed to choose a lower speed of the speed of the 25 % less than it is recommended (this indicator will be minimal permissible for possible use). But it is better to adhere to those indicators that are close to given.

Drills made of hard alloys feel more if the speed is too small. In this regard, the teeth are crumbling, since the vibration is more strong. The drill in such conditions will not be able to last a long time. If the drill is made of powder or high.Speed steel, then they will break faster when the permissible indicators will be higher by 20 % or more from the norms specified in the table.

It is important to adhere to a normal feed.

When the work is just beginning, it is necessary to reduce the feed (according to the table). The user must understand that with very strong pressure on the drill, it will not work to increase the speed. In order for performance to be higher, it is necessary to use drill from hard alloys, and the machines choose those that have a higher speed of rotation. When the user feels that he applies great power during work, most likely, the drill simply became unusable or material that is subject to processing, very hard.

It is necessary to constantly monitor the process of drilling.

If fragile products are subject to processing, the work will be done very quickly, one call. When it is necessary to make a hole of more than 30 mm in depth, the basic rules should be followed:

  • When a hole of 30 mm is made, it should be taken out of it and clean it (a lot of chips are formed in the process);
  • The insides of the hole must be filled with lubrication;
  • The work should be performed with a low feed, until the chips are formed again outside;
  • Then the whole process is repeated.

Using technological products for lubrication and cooling (Sots).

When performing work, it is important to always use quality means. It is best to use coolant liquids (lubricating liquids). Depending on the chosen type of drill, if it has a special coating, you can do with cooperative, only the life will be reduced. If we are talking about creating large holes (more than 37 mm), then coolant should always be used. The presence of the necessary cooling is an important factor for the high.Quality and efficient operation of the tool. Когда обрабатываются поверхности жаропрочные или с повышенной плотностью материалов, необходимо создать охлаждение при помощи СОЖ не только снаружи, но и изнутри.

When Kern stuck inside the drill.

First of all, it is necessary to deal with the reason why Kern could get stuck inside. The main ones in this case are the following:

  • The user exerts great pressure on the tool when working;
  • There is no necessary cooling or it is completely absent;
  • The speed of rotation of the drill was chosen incorrectly;
  • The drill became unusable due to wear;
  • The centering drill became worthless.
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If the tool has overheated, after cooling, the core can fall out on its own, you can just wait. Great efforts to extract it should not be applied. You can try to take it out with a simple shaking of the hand (in this case, to avoid cuts, all manipulations should only be carried out in gloves). In addition, you can use auxiliary tools. Screwdriver or awl, tapping slightly with a hammer from all sides. It is also allowed to get a drill and tapped slightly with a pin on the surface, then the stuck part may fall out.

Work with products that have non.Parallel planes.

Such work is considered more dangerous, since there is a risk of damage when the drill is released. In this regard, it is necessary to reduce the feed when drilling is approaching the completion. In this case, it is better not to use steel powder and high.Speed drill. If the work is carried out behind the machine, which has an automatic supply, you should independently choose a manual version on it. It is always important to observe safety during work.

Work by drill in groove holes.

Work should be carried out alternately. When there is a need, it is better to get a pin in advance, so it can be protected and not bend. When working, you should make a smaller drill.

When fulfilling all the recommendations for work, it is possible to achieve that the drilling will be performed qualitatively and the tool can not fail longer. Below is a table showing what frequency of drilling and supply of the drill should be when working with one or another material. If you adhere to the specified requirements, the drill during work will not often break.

Material Speed ​​(frequency) of drilling, m/min. Drill supply, mm/about.
Structural steel 40-60 0.08-0.12
Steel 30-50 0.08-0.12
Stainless steel 18-45 0.08-0.Ten
Cast iron 65–95 0.12-0.20
Non.Ferrous metals, aluminum 100-550 0.22-0.45
Special alloys 10-30 0.05-0.08

Economic justification for the use of lubricants

The use of recommended lubricants and coolest liquids fully justifies itself from an economic point of view. This is proved by the results of various tests.

A great example is data from the Karnasch plant (Germany). A test was carried out on it, in which with two crowned drills, holes with a diameter of 25 mm in steel with a thickness of 10 mm were made. When drilling the first drill, a 7-percent solution of the emulsion was used, when processing the material with a second tool-water. In the first case, it was possible to drill 1,500 holes, and in the second. 835. This is 45 % less.

On average, given the cost of coolant, economic costs for metalworking are reduced by 15 %. In this case, the life of the machine is extended. This fact should also be taken into account.

How to make oil.Based

To prepare an oil-based emulsion with your own hands, it is enough to carefully mix three components-oil, water and surfactants (surface-active substance). On forums for metalworking, they also offer more complex recipes for making homemade co.Cheese for turning machines. For example:

  • Mix one faceted glass of flavored liquid soap, unrefined sunflower oil, kerosene and calcified soda of half.Stroke of the linen bleach a quarter of the Fairy stack, add with warm water to a volume of 10 liters and heated to 90 ° with continuous mixing. The resulting concentrate is diluted with water in a proportion of 1: 3.
  • 65 liters of water 7 l of diesel fuel 1 piece grated 60% of the laundry soap 1 pack of washing powder Pemos Automat 200g 200g of Fairy dishes (Fairy) 2 tablespoons of soda soda. After pouring into the tank for coolant, drive a pump for 10 minutes. And a home.Made emulsion is ready.

In recipes of homemade emulsions, industrial oil is often found. It can be replaced by motor.

How to cool the drill when drilling metal

In the industry and life of the drill, when drilling metals, they are cooled by various coolants and recommended by substitutes.

In industry

In production, the following compositions are most often used.

The material of the processed workpiece Co.Zh
Stainless and heat.Resistant alloys A mixture consisting of oleic acid (20 %) and sulfofrezole (80 %). The last component of this lubrication for drilling stainless steel can be replaced with kerosene (30 %) and convented oil (50 %)
Cast iron casting Kerosene, emulsion (3-5 %). Deep drilling is allowed without cooling.
Loaning cast iron Emulsion (3-5 %)
Zinc Emulsion
Copper Mixed oils, emulsion. Deep drilling is allowed without cooling.
Nickel Emulsion
Brass Emulsion (3-5 %). Deep drilling is allowed without cooling.
Bronze Mixed oils. Deep drilling is allowed without cooling.
Aluminum and alloys based on it Kerosene, emulsion, mixed oils. Deep drilling is allowed without cooling
Alloy steel Mixed oils
Instrumental steel Mixed oils
Structural steel A mixture of crumpled oil and kerosene
Carbon steel Close oil, emulsion

At the same time, various technologies for the supply of lubricants and cooping liquids are used.

Photo: Source of cooal through the channels of the drill

When working with manual industrial and household drill drills, the drill is periodically dipped in coolant, and fluids are poured into the holes with various methods.

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At home

At home, the following coolants can be used to cool cutting tools when drilling metals. They, of course, are less effective than specially designed compounds, but it is better than nothing.

drilling, lubricate, drill, stainless, steel
The processed metal Coolant
Aluminum Soapy water
Duralumin A mixture of castor oil and kerosene
Aluminum alloys of type D16T Laundry soap
Soft steel Castor oil, technical petroleum jelly
Silumin Divorced by the turpentine

If there are no components, you can prepare a universal cooling liquid for drilling metal at home.

  • Take 200 g of soap and dissolve it in a bucket of water.
  • Add 5 tablespoons of machine oil.
  • Boil the solution until a so.Called solar emulsion is obtained.

Economic justification for the use of lubricants and cooping fluids

The use of recommended lubricants and coolest liquids fully justifies itself from an economic point of view. This is proved by the results of various tests.

A great example is data from the Karnasch plant (Germany). A test was carried out on it, in which with two crowned drills, holes with a diameter of 25 mm in steel with a thickness of 10 mm were made. When drilling the first drill, a 7-percent solution of the emulsion was used, when processing the material with a second tool-water. In the first case, it was possible to drill 1,500 holes, and in the second. 835. This is 45 % less.

On average, given the cost of coolant, economic costs for metalworking are reduced by 15 %. In this case, the life of the machine is extended. This fact should also be taken into account.

How to drill an electric screwdriver?

You can drill metal blanks not only using industrial equipment or electric drill, but also using a battery electric screwdriver. This power tool has low power. Because of this, it is suitable for drilling holes of small diameter and depth.

Drilling is carried out using industrial equipment and power tools. It is important to choose the right equipment, and take into account the depth, the diameter of the hole. So that the equipment serves longer, the coolant should be used. You need to drill perpendicular to avoid damage to the workpiece, tool.

How to Drill Stainless Steel Like a PRO

What needs to be done with a drill for metal so that it serves longer and does not stop

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When drilling any solid material, drills quickly lose their operational qualities. The worst of all things are with metal drills when there is a need to make holes in strong steel. In this case, sharpening melts such a burning candle. In such conditions, each owner and master is interested in extending the possible life of his tool. How to do it?

It is important to understand the main thing: what do not do, but sooner or later the drill will still have to be changed or sharpened. It will not work to completely get away from this. However, it is possible to extend the maximum service life of an already sharpened drill, and it is not so difficult to do as it may seem. Although the process of protecting the cutting edge of the tool will be associated with some additional expenses, however, they pay off both monetary and temporary terms. The following ways are used by individual masters and entire production.

So, all that needs to be done is to lubricate the drill with some suitable protective composition for these purposes. The bottom line is that the substance used should have a smaller friction coefficient. By itself, the resulting composition should not be fire hazardous. Many craftsmen are used for these purposes ordinary copper lubricant, which is applied to the tip with a cutting edge before the drilling. You can also apply lubricants to the place of drilling, also in a small amount.

In addition to copper lubricant, there are other protective compositions, however, it will not be so easy to get some of them. In industrial production, oleic acid is used to extend the life of a drilling tool. A popular plasticizer, which is usually used in the production of paint. Some masters also prepare artisanal mixtures, for example, from thick solidol and copper-graphite chips. It should also be added that if the task and the situation allows, you need to try to drill at low speeds. In any case, it is recommended to start the workflow on them.

If you want to know even more interesting, then you should read about 5 useful tricks with an electric screwdriver. Which are useful to home masters.

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