US1714679A - Alloy - Google Patents

Description

' mechanical means.

Patented May 28, 1929.

UNITED STATES I 1,714,679 PATENT OFFICE.

DONALD C. LEE, 0F SYOKANE, WASHINGTON.

ALLOY.

I No Drawing.

My present invention relates to an improved alloy for use as anti-friction metal and adapted especially. for bearings of rotary journals as well as for slidingmachine-ele ments. The invention consists in an alloy as an article of manufacture having asv its 'major portion or element, brass that is united with, Babbitt metal, lead, or pewter, as desired, by the use of a flux during the alloying process. In the production of the alloy in connection with brass as the major element or metal, the brass is subjected to a milling process by means of which it is reduced to a finely comminuted grain or'coarse powder. The metal with which the brass is tobs'united is first reduced to a moltenstate andthen the milled or powdered brass is added thereto, together with a flux for uniting the elements of the alloy into a homogeneous Whole.

Thus as an'exemplification of my invention in the uniting of brass and Babbitt metal, the Babbitt metal may form twenty per cent of the final product or alloy.

, Thebrass which will form the remaining. eighty-tper centof theifinal product or alloy may be made'up of the following metals,

in copper 20 parts, zinc 3 parts and tin 3- parts. The proportion of the brassand babbitt may be varied, and the ratio of metals in the brass and Babbitt metal may also vary.

The Babbitt metal is prepared in a crucible by the application of the necessary heat in any usual manner, and brought to a molten state.

The brass is finely comininuted by suitable A flux is utilized for uniting these prepared ele ments during the alloying process. One formula for the flux or solu ion may comprise the following materials in the proportions; stated Muriatic acid v p 1. gallon Zinc 3p0unds Blue vitriol (crystals) i 12 ounces Resin 21 ounces This flux is separately prepared by first placing the muriatic acid in a suitable con,-

tainer aiid adding thereto a supply of zinc strips as rapidly as may be for the dissolu-.,

tion of the zinc by chemical action in the acid.

While the acid is attacking and dissolving the zinc strips a supply of blue vitriol (crystals) is added to this mixture, which is stirred or agitated in usual manner to assist in the dissolution and the formation of a homogenpplication filed November 17, 1926. Serial No. 149,006.

sorb the zinc. At this stage the resin is added to the solution and the Whole mass is continuously stirred or agitated until the chemical changes cease in the solution. The top of the. solution is then skimmed off to remove any scum and after cooling, the solution or flux v is ready for addition to the metals which will form the alloy.

comminuted form is added to the molten Babbitt metal contained in the crucible and the solution as above prepared is preferably atomized in proper devices and added simultaneously to the molten metal with the brass shavings or powder. During the introduction of the brass and flux to the molten Babbitt metal, the mass while heated to the re: quired temperature, is stirred and agitated by suitable means until the constituent parts of brass, Babbitt metal and the solution or''' flux are thoroughly united and form a molten mass. U The final product is thus composed of the various elements of Babbitt metal and of brass, alloyed together, in approximately the proportions of 80% brass and 20% Babbitt metal. The ratio of copper and zinc in the brass may be as three totwo, and the propor- The brass as previously prepared and intions in the Babbitt metal may betin 83%;

copper 9% and antimony 8%..

The proportion of the fluxused to the al-' loy and the ratio of parts or metals in the brass and Babbitt metal may vary or differ with the desired" degree of'hardness'of'the finished roduct or "alloy. If a journal bearing is to e'formed, the united alloy as molten imetal may be poured from the crucible di rectly into a mold forthe formation of the desired bearing structure. Or the molten metal may be poured from the crucible into desired shapes or castings-for subsequent use.

I'find that the brass, Babbitt metal and flux unite readily and perfectly, and the production ofanti friction metalis thus accomplished at a comparatively inexpensive cost.

' The alloy is of such tenacity that'when mold-' ed in a journal bearing'for instance, it eliminates danger of cracking or breaking, and msures durability not only for bearlngs for rotary journals, but also for machine elements having slidingfrictional contact. While the alloy produces but slight friction to the movingvparts, it is ofsuflicient hardness to reduce abrasions and Wear to a minimum wlthoiit cutting or injuring .the frictionally engaged tion, as in a ournal bearing.

Having thusfully described my invention,

What I claim as new and desire to secure byv Letters Patent is? j alloy of approximately 80% 1. Ananti-friction metal comprising an brassand 20% Babbitt metal. v 2. The'process of preparing an anti-friction-metal which consists in comminuting brass, reducing Babbitt metal to a molten state, adding the eomminuted brass to the molten Babbitt metahadding aflux-solution,

maintaining the mixture ina molten, state and agitating it to form anniform alloy.

' 3. The process of'preparing an anti-frie-' tion metal which consists in reducing Babbitt metal to a'mo'lten mass, adding comminuted brass tofthe' molten metal, atomizing. a fluxsolutlo'n to the mixture and stirrmg it to form an alloy, and cooling the final product.

4:. The process of preparing an anti-fricmolten Babbitt metal, adding a flux-solution eon'mrisingmuriatie acid, zine, blue vitriol and resin 11 1 suitable proportions,ma1nta1n ing the mixture in a molten state and agitat 11;; it to form a uniform alloy.

In testl onywhereof I aflix my'slgnature.

DONALD 0. LEE."