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Hardening of steel

As you know, it became possible to inject the special hardening route with such hardness that it would cut glass like a diamond. But not everyone knows that there is a very simple way to make steel so hard. Shilo, the blade of a knife or other cannon is incandescent and immediately immersed in ordinary sealing wax for one second. This operation is repeated continuously, choosing each time for immersion a fresh room in the sealing wax, until the steel does not cool down and does not enter the sealing wax any more. At that time, the quenching process is considered complete. It remains to remove the adhering particles of sealing wax. When using hardened in this way, the point or blade of steel is recommended each time to moisten them with turpentine.

Method for softening malleable iron

With some subtle work, as if, for example, artistic and metalworking, it is highly desirable that malleable iron be characterized by the greatest softness. As a consequence, the subsequent iron processing agent deserves care. The iron is heated red-hot also in a liquid green soap. Then once again heated red hot plus immerse in the lime powder, in which place also allow it to cool completely. The iron processed in this way at great malleability acquires at the same time the greatest softness.

Lining for blacksmiths

The following composition is recommended:

  • 20 pieces of chamotte, 20 elements of cast iron shavings,

  • 1 part of table salt, 0.5 part of ammonium chloride. Stirred in
    Dry form is also wetted with water so that a plastic mass forms.

Soldering of cast iron gratings

Prepare a mass of 6 g of sulfur in powder, 6 g of lead white in powder, 1 g of borax in powder plus wetted with concentrated sulfuric acid. This mass is covered with a thin layer of the fracture room and is also strongly compressed by squeezing them with wire. In this form, the welded elements remain for about five days, after which the wire is removed. If the elements were well-fitted, then there is not the slightest trace of the spike.

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