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TECHNOLOGY OF METAL FORMS TREATMENT

Quenching steel

As you know, it became possible to take a special hardening route with such hardness that it will cut glass like a diamond. But not everyone knows that there is a very unsophisticated way to make steel so hard. Awl, knife blade or other weapon glowing white-hot also immediately immersed in ordinary sealing wax for one second. This operation is repeated continuously, choosing a fresh room in sealing wax each time for immersion, until the steel cools down in any way and no longer enters sealing wax. At that time, the hardening process is considered complete. It remains to remove the adhering particles of wax. When using an edge hardened in such a way, or blades made of steel, it is recommended to moisten them with turpentine each time.


Method of softening ductile iron

With some fine work, as if, for example, artistic and metalworking, it is extremely desirable that ductile iron be distinguished by the greatest softness. As a consequence, the subsequent iron treatment means deserves concern. Iron is heated red hot and cooled in a liquid green soap. Then again heated red hot plus immersed in lime powder, in which place also allow it to cool completely. Iron, thus treated, with high ductility, acquires at the same time also the greatest softness.


Forging for forge forges

The following composition is recommended:

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

  • 1 part of salt, 0.5 parts of ammonium chloride. Stir in
    dry form is also moistened with water so that a plastic mass is formed.


Soldering Cast Iron Grates

Prepare a mass of 6 g of sulfur powder, 6 g of lead white powder in powder, 1 g of borax in powder plus moisten with concentrated sulfuric acid. This mass is covered with a thin layer of the fracture room and is also strongly pressed together by squeezing with wire. In this form, soldered elements remain around five days, after which the wire is removed. If the elements were well-fitted, then not the slightest trace of the spikes is noticed.

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