US1115870A

US1115870A - Process for coating steel or iron with copper.

Info

Publication number: US1115870A
Application number: US73477912A
Authority: US
Inventors: James E Sheaffer
Original assignee: Individual
Current assignee: Individual
Priority date: 1912-12-03
Filing date: 1912-12-03
Publication date: 1914-11-03
Anticipated expiration: 1931-11-03

Description

I. 5.- BUMPER. PBocEss POR GoATINGsTBEL 0B IRON WITH COPPER;

lfPLIoATIx FILED 1mm, 1912.

Patented Nov. 3, 1914.y

Llllis'zo,

Attorneys entre sra-r T OFFICE.

PROCESS FOR COATIN G STEEL GR IRON WITH COPPER.

Application filed December 3, 1,912. Serial No. 734,779.

To all 'Lc/1cmy it may com-'em Be it known that l, JAMES E. Snnixrrnn, a citizen .of the United States, residing at Burnham, in the county of Milin and State of Pennsylvania, have invented a new and useful rocess for Coating Steel or I ron with Copper, .ot' 'which the following is a specification.

The present invention appertains to a process of producing a coated malleable and ductile ingot for the manufacture of rolled or drawn paxoducts, and aims to provide a novel and improved process :tor producing an ingot of the nature indicated, which may be .drawn or rolled into plates, sheets, fire or other products, having a relatively high `tensile and com )ressive strength and having a coating or facing of non-corrodible and good electricity-conducting material. l ln order to clearly illustrate the .formation of the products of the present process, attention is invited to the accompanying drawings, in which* Figure l is a vertical central sectional view through an ingot mold for the casing of an ingot, rectangular in cross section, and showing the completion of the first steps of the process. Fig. 2 is a top plan view thereof.- Fig. 3 is a side elevation of a completed sguare ingot. Fig. 4 is a cross section through the square ingot. Fig. 5 1s a view similar to Fig. l showing a cylindrical ingot mold. Fig. 6 is a top plan view thereof. Figs. 7 and 8 illustrate in side elevation and cross section, respectively, a completed cylindrical ingot.

In carrying out the present process, there is provided an ingot mold l, which may be of square or rectangular cross section, as illustrated in Figs. l and 2, or which may be circular in cross section, as seen in Figs. 5 and (5. The lirst sten of the process resides in filling the mold l With molten copper. which is a malleable and ductile metal 'having relatively high eoetlicients of eXpansion and thermal conductivity', and a relatively lovv melting point. The next step of the process resides in permitting the superlicial portion of the copper to cool and solidify to form a hollow shell 2 Within the mold, as seen in Figs. 1, 2, 5 and 6, the interior molten metal then being drawn from the shell 2 previously formed. The shell 2 is then lled with a core-forming molten malleable and ductile metal, either steel or iron, which has a relatively loW coeficient of Specification of Letters Patent.

' the mold ,and the Patented Nov. 3, 1914.

expansion and a relatively high melting point. Thus, the molten steel or iron Will slightly fuse the interior of the shell 2, in order that the .two metals will inter-penetrate and Weld together. This is due to the fact that the melting point of the coreforming metal is considerably higher than the melting point of the shell forming metal or .the copper, core-forming metal is introduced into the shell, the interior of the shell will be raised to the melting point, due to its direct engagement with the core-forming metal. The exterior of the shell being in contact with copper having a high coelicient` of thermal conductivity, Will prevent the entire shell from fusing.

The final step consists in permitting the tivo metals to cool, the shell dissipating the heat to the surrounding media, or to the mold and thence to the surrounding media. Due to the fact that the copper has a relatively high coeiicient of expansion, While the core metal has a relatively loW coefficient of expansion, the. shell and core in cooling simultaneously, will cause the shell 2 to have a greater contractive effort than the core 3, whereby the bonding of the shell and core will be made more complete and effective as the core metal and interior of the shell solidify. The shell having a relatively high coefficient of thermal conductivity, will quickly dissipate the heat to the surrounding media, to enhance the cooling of the ingot.

Due to the fact that the two metals are each malleable and ductile, the ingot may be rolled or hammered into sheets, plates, bars and the like, or may be drawn out into Wires, rods, and the like, it being noted, that in each case, the product comprises a body o'f steel or iron, which is coated With copper. Thus, the body of the product will have a high degree of tenacity, and Will withstand considerable tensile and compressive strains, vvhile the coating or facing Will render the product non-corrosive, and an 'electrical conductor of high order.

From the foregoing, it is manifest that the selection of metals having the properties above noted, is essential to the process resulting in the malleable and ductile ingot for the manufacture of rolled or drawn products. i

What is claimed is:

l. The process fof producing a coated/ whereby When the molten malleable and ductile ingot for the manufacture of rolled or drawn products, consisting in filling a mold with a molten malleable and ductile metal having relatively high coefficients of expansion and thermal conductivity, and a relatively low melting point, their permitting the superficial portion of the metal to cool and solidify to form a hollonT shell, then drawing off the interior molten metal from the shell, then filling the shell with a core-forming molten malleable and ductile metal having a relatively low coefficient of expansion and a relatively high melting point, to slightly fuse the interior of the shell whereby the two metalsy interpenetrate and weld together, and thenA permitting the two metals to cool, the shell dissipating the heat to the surrounding media and having a greater contractive effort than the core.

2. The process of producing a coppercoated malleable and lductile steel or iron ingot, for the manufacture of rolled or drawn products, consisting in lling a mold with molten copper, then permitting the superficial portion of the copper to cool and solidify to form a hollowl shell, then drawing off the interior molten copper from the shell, then filling the'shell With core-forming molten malleable and ductile steel or iron, to slightly fuse the interior of the shell, whereby the two metals interpenetrate and weld together, and then permitting the tvvo metals to cool, the shell dissipating the heat to the surrounding media and having a greater contractive effort than the core.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature 1n presence of two Witnesses.

J AMES E. SHEAFFER.