Advice 1: How to harden stainless steel

After the procedure of hardening stainless steel acquires hardness, losing its flexible properties. Hardened steel blade knife is made using water, oil, air, wet sand, wax, etc.
How to harden stainless steel
You will need
  • - steel blade;
  • - electric furnace;
  • - sealing wax;
  • - turpentine.
Instruction
1
Steel blade without a handle of plastic, wood or another material (only if knife with molded handle is also stainless steel) place in cold electric oven.
2
Turning on the furnace, gradually heat the blade up to 950-1050 degrees until it becomes a glowing bright red color, and wait some time (5-10 minutes). It is possible to produce heating of the steel and on hot coals and on a gas burner, and with the help of a blowtorch, but to control the precise temperature control is most convenient in an electric furnace.
3
Carefully, observing safety precautions, remove the blade from the oven, attaching it securely with pliers or other gripping tool and quickly plug it into the wax for a second.
4
Then remove it and insert again in the same wax, but in a new, not previously untouched by the blade and instantly remove.
5
Immerse and remove the red-hot steel blade until then, until you feel that the metal included in the weight of the wax in the oil, cooled down.
6
Clean the steel blade from the remnants of wax, until it froze, and wipe it with turpentine. The hardened blades of stainless steel this is completed.
Note
Keep in mind that the longer and harder you heat the metal, the deeper quenching, the harder is the blade. But too rigid blade becomes less stable, increasingly losing the degree of elasticity and their cutting properties. Here everyone chooses what he needs more.
Useful advice
The hot blade is much easier to bend or damage the other way. Therefore, plunging it into the wax, especially the first time, do it smooth, precisely designed with smooth gentle strokes. But choosing a steel, it is better to give preference to foreign manufacturers, as they have requirements for the percentage of content of stainless steel is actually composed of stainless steel above.

Advice 2: How to temper steel

Hardening steel as the heat treatment is a complex process and causing internal and not visible to the naked eye changes in the structure of steel. But along with this hardened parts have properties quite visible: increased strength, sharpness, lower susceptibility to wear. It is known that a properly tempered knife blade or the edge of the sewing can successfully replace the glass cutter and store-bought tool sometimes requires "improvement". Surprisingly, with this magnitude of what is happening with the steel changes quenching in Amateur conditions it is possible. But the principle of all (not only home) of the methods of hardening is the heating of steel to a certain temperature and then rapidly cooled. Most affordable 2 way.
How to temper steel
You will need
  • * item for quenching;
  • * correlated with the size of the part capacity with any lubricating oil;
  • * correlated with the size of the part capacity with cold water;
  • * ticks;
  • * wax;
  • * fire (stove, gas burner)
Instruction
1
For hardening of steel both ways to start detail it is necessary to properly warm up. Take it and put it in the campfire coals. If there is no fire - heat burner or on the stove. But note that for the process of hardening steel is highly recommended it is the coals, because their temperature is much higher than the temperature which can be obtained on the burner or stove.After some time (for example, to "warm up" the knife you'll need about 10-15 minutes), the item will become bright crimson in color, which means that the required temperature has been reached. Mites pull detail out of the fire.
2
According to the first method, 2 times in a row with an interval in 2-3 seconds dip it in a bowl with butter, leaving at the first dip for 3-4 seconds, the second for 5-6 seconds. Then dip the part in a container of water for the final cooling.
3
Acting on the second, more "compact" method, after heating the item soak in the wax. Immediately remove and repeat this step as long as your detail does not get cold enough to stop the wax to penetrate.
Note
* along with the improvement of many properties of steel after hardening becomes much more fragile. Therefore, it is recommended to let her go;
* one and the same detail should not be hardened repeatedly. This leads to fatigue of the metal at which it loses the desired properties.
Useful advice
* if you harden, for example, the blade is not proclivity the entire part is heat just the cutting edge;
* if you're new to the hardening of steel, when heated, remove the item every 2-3 seconds. and control the color as there is a great danger of overheating or underheating. In the first case, the item turns white and becomes excessively brittle, and the second gets a bluish color and softened.

Advice 3: How to drill stainless steel

Almost every business has its secrets. Somewhere more, somewhere less. So, sometimes without the wise advice of knowledgeable people it is impossible to deal with in any case. Such complex events can be attributed to attempts to drill the reservoir of stainless steel. To say that this is impossible is impossible, but without the knowledge of some moments you will hardly be able to do this with the first or even the second time.
How to drill stainless steel
Instruction
1
As a rule, in order to make a hole in the layer of stainless steel, you must use special grease. In most cases, as this special material is used some sulphur with the addition of engine oil. In order to find the right kind of sulphur for the manufacture of a lubricant for drilling, please contact specialty stores. These stores buy sulfur under such names as "flowers of sulfur", "sulfur for fumigation or also this form of sulfur may be called "colloidal sulphur". If you have purchased these types of sulphur as "sulfur color" or "colloidal sulphur", can use them without preparation, that is, in the form in which you bought it. If you have purchased sulphur for fumigation", before adding it to engine oil, be sure to finely grind it.
2
If you want to cook the grease, which will operate much more efficiently than grease of sulfur and machine oil, try to mix sulfur not oil, and fatty acids. To get these same fatty acids, take soap lowest grade, grind it as much as possible, and then dissolve in the water. The water should be hot. The solution was pour a large amount of hydrochloric acid, use of technical hydrochloric acid. The reaction components of all the fatty acids float to the surface of the vessel. Then pour into the container of a large quantity of cold water. This will give the fatty acids to solidify, and after that you'll be able to collect them from the surface. Repeat the wash procedure of fatty acids up to 5 times. First in hot water, then add cold, separate, and so on.
3
Once you have cleared enough fatty acids, mix them with sulfur. Follow the ratio of 6:1. After lubricant for drilling stainless steel finish, you can try to use it. During drilling directly remember not to let the drill bit overheat. Pause, allowing the drill to cool. Otherwise, grease will not assistant, but on the contrary, will hinder the work.

Advice 4: How to solder stainless steel

Products made of stainless steel are more difficult soldering process than, for example, copper. To achieve the desired result, you must know a few features of this kind of work.
How to solder stainless steel
Instruction
1
For soldering stainless steel take an ordinary soldering iron 100 watts or more. Also you will need a special substance called flux. It is necessary to clean soldered surfaces, to get rid of oxides, improving the flow of solder and protect the places adhesions from oxidation. When soldering stainless steel as a flux for soldering is used the so-called acid – zinc chloride. You can buy in the store building materials or make your own by throwing in a solution of hydrochloric acid pieces of zinc, for example, batteries. Also you can take orthophosphoric acid. Better to solder with aluminum solder or pure tin.
2
Prepare the surface of the solder, and clean them from impurities with a file or sandpaper. Prepare your workplace, remember the rules of fire safety. When working with a soldering iron at hand, there should happen to be of combustible materials.
3
Apply the acid and solder place solder. It's not always easy, sometimes the metal rolls on the surface and does not want to spread evenly. In this case, the hot surface again and apply another layer of acid and solder again. If in the place of soldering, the oxide film appears gray, you can remove it with a stiff brush and immediately apply the acid.
4
When the items are tinned, solder them in the normal way. If the item is too massive to heat it entirely would be difficult. In this case, the item to be heated to flow the solder and pouring it into the place of soldering. The solder will flow to where your body temperature, so warming should be exactly the place where it needs to go numb. After soldering secure the parts with a wire for a while.
5
As a solder you can also use the alloy ПОС50Кд18. It contains 18% of cadmium, 50% tin and 32% lead. This solder is also convenient to solder a circuit, so they don't overheat.

Advice 5: How to temper steel for a knife

To make a regular stainless steel knife more durable, it can be tempered. The hardening process is also called vacation. At a certain skill, a vacation can be done at home. How to correctly temper the knife and to increase the strength of the blade?
How to temper steel for a knife
You will need
  • - knife for quenching;
  • - muffle oven;
  • the oil (antifreeze, automobile engine oil, testing);
  • - material for polishing, chrome-plating steel.
Instruction
1
Preheat muffle furnace to a temperature of 1030-1050°C. once onepiece to reach the required temperature, soak it in the on position, the hour and turn off. The temperature in the furnace should be strictly up to 1100°C, or when the calcination will undergo an irreversible process of consolidation sorbitol steel structure. It becomes viscous and loses its impact properties.
2
Place the knife blade in the oven. You must first remove the handle, high temperature, almost 100% deform the material of the handle. Time for a high holiday of the blade is calculated as 10 minutes per 1 mm thickness. Visually determine the degree of calcination by the color of the blade. It needs to be the same as the color of the inside of the furnace.
3
Remove the blade from the furnace and vertically immerse it in a container of oil, slightly ' s along the blade to the profile of the blade does not lead from excessive pressure on the soft hot steel.
4
Having waited until the steel temperature falls to 300°C (bluish color on the steel surface), place the blade in the muffle furnace, the pre-exposed temperature of 200-300°C. the Process low vacation should last 3-4 hours.
5
Remove the blade from the furnace, if necessary, send it, let it cool in a natural environment outdoors.
6
Polish, othererwise, sharpen the blade, attach it to the handle.
Note
Never attempt to align the blade after high-temperature tempering - blade due to the high sorption of steel is very brittle and conventional mechanical exposure can lead to cracking of steel. Straightening can only be performed after low tempering at temperature up to 300°C.
Useful advice
For low tempering after high-temperature muffle furnace nekalki will be a very long time to cool, so as not to interrupt the tempering process and not seek a second muffle furnace can be an ordinary kitchen oven to heat to a temperature of 250-300°C and to conduct low leave it.

Advice 6: How to solder stainless steel

Why not just have to face the house master: Foundation needs patching, the pump for supplying water to the interior, the fence repaired. But sometimes you need the ability to perform jewelry work, for example, to solder stainless steel.
How to solder stainless steel
You will need
  • - soldering iron;
  • - soldering acid;
  • - tin solder;
  • - a metal file or sandpaper;
  • - tube;
  • - steel cable.
Instruction
1
To solder the parts, made of stainless steel, prepare the soldering iron and flux. In this case you can use normal soldering iron to one hundred watts (do not purchase a soldering iron more power). As a flux use soldering acid. Also prepare a tin solder.
2
Preparing all the necessary for soldering stainless steel, proceed to the process. To begin, thoroughly clean the joint with sandpaper or a file. Then apply soldering acid and produce oblivnye. If oblozhit item does not work the first time (that is, the surface does not stick solder, and he just starts to slide), a well-warmed surface re-apply a layer of soldering acid and perform maintenance.
3
If the attempt is not successful (solder continues to slide, and also appears oxide film grayish color), surface caribaea carefully apply with a special brush. This brush can do with their hands: it is a small piece of tube with a diameter of 5 mm, in which is placed a thin vein from a steel cable. Apply on the problem area, soldering acid, then hover over the brush at the same time and a soldering iron, and then start to drive these two tools. This procedure will help to remove the oxide film.
4
When the items are tinned, solder them together using solder and flux.
Note
If used was during active soldering flux, it remains at the end of the process should always be removed, because remaining in the microcracks and scratch acid will eventually start to destroy the detail.
Useful advice
Stainless steel perfectly soldered citric acid, which when soldering is completely consumed, and therefore does not require subsequent cleaning of the part.
Search
Is the advice useful?