US1358147A - Zinc alloy - Google Patents

Description

v I UNITEDLSTATES PATENT ori ce.

HANS GQLDSGHMIIDT Ann KARL or ESSEN, GERMANY, assienons, BY Enema ASSIGNMENTS, TO THE CHEMICAL FOUN 'DATION, -INC., A CORPORATION..OF DELA- 1 ZINC ALLOY. 1 e

1,358,147. specifica i t y n Patented Nv.9,192o. No Drawing. Application filed. April 19, 1 917. SerialNo. 163,262. v i

T 0 all whom it may concern. improved. Besides, such castingsare better 35 Be it known that we, HANS GOLDSGHMIDT worked than pure alloys of zinc and aluand KARL; Mt'iLLER, doctors of chemistry, minum or than pressed zinc. The amount citizens of the German Empire, residing at of aluminum has an upper limit ,in the for Essen, Province of the Rhine, Germany, mation of the eutectlc mixture which, as

Salkenbergsweg 18, have invented a new above stated is about 5.3% and a lower limit 40 and useful Improvement in Zinc Alloys; at about .5 per cent, whereas the addition and we do hereby declare the following to of manganese may bevaried from about .25 be a full, clear, and exact description of the per cent. up to an amount not essentially ex- 0 same. v ceeding 2 per cent.

The object of our invention is an alloy of e The new alloys can be used as hearing 5 'zinc and aluminum containing manganese. metal and j white-metal, furthermore for By'alloying zinc (for which purpose comcasting machine-fittings, for fusees and for mercial spelter containing lead may be rolled products. 'used) with an amount of aluminum not con What we claim is:

siderably higher than is necessaryfor form- 1. An .alloy of zinc containing from about:

ing the eutectic mixture zinc-aluminum, that .5% to about 6% aluminium and from about is to say 5.3 per cent.. of aluminumg allo s =.25% to about 2% manganese. r

are'obtained which can be forged and rb'l ed 2. An alloyof zinc containing from about 2 within certain limits of temperature. How- 5% to about 6% aluminium and-,from about ever such'binary alloys of zinc and aluto about 2% manganese, the content of minum show the heavy drawback that they manganese belng always less than the aludo not'yield sound castings. ,mm um-content. a

We have found that the tendency. of such 3. A alloy of zlnc contalnmg about 5% 25' binary alloys .of 'zinc and aluminum for aluminium and about 2% manganese.

forming blow-holespr-pipes and for segre- In testimony'wliereof, we have signed our 'g atingis removed by adding. a small amount names'to this specification 1n the presence of of manganese. In this way alloys are obo s n mg wltnesses.

tained which .yield denseh and perfectlyl "HANS GOLDSCHMIDT 30 homogeneous castings wit a very sma shrinkage", It may be remarked that by the MULLER addition of manganese the mechanical prop- Witnesses:

erties of these alloys, especially of the 1 FRANCES M.-NUFER,

finished rolled material, are considerably Fimonmcn J. Dm'rzMAN.