DE33382C - Method of making a steel composition - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

CLASS 40: Metallurgy.

Addition to patent no. 30778 of August 20, 1884.

Patented in the German Empire on February 12, 1885. Longest duration: ig. August i8gg.

First of all it should be mentioned that in some cases in the case of the P. R. No. 30778 Composition the mercury must be omitted, and it is then replaced by the appropriate Weight of tin and steel filings replaced. The parts by weight of the other additives can also be changed if necessary.

The steel composition can be used for various purposes in the manner described below be varied.

1. If the weight of the nitric acid Y ₈ to Y _{10 is added to} rust, the composition becomes hard and. acquires the property of attracting water.

When it is melted together with zinc, it must be added in small pieces to the pulpy alloy so that it surrounds the zinc pieces completely. Before melting, the mass is then covered with a thin layer of sodium chloride and then with a layer of graphite _{about ι Y 2 cm thick.} The graphite cover prevents cooling during the melting of the mass and you can penetrate the graphite layer more often to observe the melting.

After melting 1 is complete, the castings can either be made directly or you can have a fusion with tin, antimony or bismuth (event, also glass dust) to achieve the required hardness.

2. A very resistant metal composition is obtained if you add about Y ₁₀ rust, a little table salt and Y ₂₀ zinc to hydrochloric acid with a little lead and, after the latter has dissolved, iron or. Add steel shavings, mix the whole thing with charcoal powder and then melt.

The addition of charcoal powder binds carbon from the metal, which gives him great resilience.

The composition just described serves to harden the zinc, including tin amalgam or glass dust can be buried.

Also gives the same in about _Y4 part of Composition 1 was added, the latter grofse hardness.

3. Inflexible resp. Rigid tin is obtained if one uses the same as described in paragraph ι of No. 2 melts the mixture with Y ₈ lead and keeps the mass covered with graphite and salt during melting, as described above.

4. Inflexible resp. Rigid lead can be obtained in a manner similar to that described under 3. Lead should be used in place of tin, and tin in its place.

5. Brought from the metal described in the main patent and from those listed above Composition 1., 2. and 3. each one part together, cover the mixture with salt and graphite, as described above, and when it melts, one in particular is obtained excellent composition for bearing cups. The demolition has the property in high

Claims (1)

Soak up degrees of water. If the bearing shells are therefore with water channels or at least are at least provided with air ducts, a very large oil saving would then be achieved will. 6. Composition No. ι with Y ₂ of No. 2 melted together is particularly suitable for encapsulating leaked axles that are placed on bearing shells made of metal no. 5 very light and beautiful running and extremely durable and thus' ■ with machine bearings, load wagons etc. very convenient to use. \ From the foregoing it can be seen that with the use of acids in the manner described, one with relatively low heat ^; excellent metal compositions when melted ^: can produce. Copper alloys can be produced with the use of hydrochloric acid, tin and lead alloys with nitric acid. 'Steel shavings etc., whereby one ^; by adding bismuth, Spiefsglanz, borax, Glauber's salt, color, gloss and hardening can be achieved in various ways. Instead of saltpeter or Hydrochloric acid can also be used with sulfuric acid, but only in those compositions in which no lead is used. The metal compositions do not oxidise in air and are therefore, as well as their other properties, very useful for many other purposes. They can be very: polished beautifully and dry rubbing is sufficient to restore the shine. The composition listed under 4 is particularly suitable for projectiles, because on the one hand it does not flip out easily, as is the case with the now common ones, and on the other hand it is so soft that it easily slips into the drawstring . Patekt claim: With the.by P..R..No. 30778 protected -Procedure 'for' production of a so-called. Steel composition instead of the special use of nitric acid also 'the use of Hydrochloric and sulfuric acid and, depending on the desired composition, possibly the addition of Rust and the Variation of Metal Additions.