US1354492A - Process of producing iron and steel bars - Google Patents

Description

L. JONES. PROCESS. OF PRODUCING IRON AND STEEL BARS.

' 7 APPLICATION FILED MAR-1| 1919- 19594920 Patented Oct. 5, 1920.

m/mv r0 2 Lieweizyn Jones.

wmmsss A TTOR/VEYS UNITED STATES PATENT OFFICE.

LLEWELLYN JONES, OF MUNCIE, INDIANA, ASSIGNOR OF ONE-THIRD TO CHARLES WESTLAKE, JR., OF YOUNGSTOWN, OHIO.

PROCESS OF PRODUCING IRON AND STEEL BARS.

after described and claimed.

An object of my invention is to provide a process by means of which bar iron and steel may be produced from machine shop turnings more economically than by any other process with which I am familiar.

A further object of my invention is to provide a process by means of which a more homogeneous product is effected and one in which the chemical composition is substantially uniform throughout.

A further objectof my invention is to provide a,process by means of which bars of better. quality, '5. e., greater tensile strength, may be produced than by the ordinary process of treating turnings such as that described above.

Other objects and advantages will appear in the following specification and the novel features of the invention will be particularly pointed out in the appended claims.

Specification of Letters Patent.

Application filed March 1, 1919.

' proper'amount of silicon must be introduced visible interstices remain. A bale or billet -1s placed on an ironor steel slab or bar 15,

In the accompanying drawing illustrating my invention,

Figure 1 is a view partly in section and partly in elevation illustrating the first step of compressing the turnings,

Fig. 2 is a perspective view of the receptacle for the turnings, its clamp, and a compressed slug in detached relation,

Fig. 3 is a side view showing the next step with the slug or billet between slabs, with a flux, and

Fig. 4 is a side View of a bar into which the slug is formed after heating.

In carrying out my invention I make use of so called machine shop turnings of high 1 and low carbon steel, and wrought iron, turnings, also axle turnings.- Turnings at 0.50% to 0.70% carbon may be too high in carbon for use in my process, so I mix with such turnings low carbon turnings, say 0.80% carbon which will give a better fusion. When wrought iron turnings are used the Patented 001.95, 1920.

Serial No. 280,115.

to make the metal fuse and weld properly in the subsequent steps ofthe process. It is of course-necessary to vary the proportions of the different grades of turnings to form the particular kind of bar iron or steel desired, that is to say, for a product of a certain composition the mixture would be different from that of a product having another composition.

It will be noted that the mixture is made while the metalsare in a cold state. The turnings thus mixed-are fed into a suitable press such as a hydraulic press generally. in rf.

dicated at 10 in Fig. 1 wherein the turningsl 1.

are indicated at 11 in a mold box' 12 having a. clamping ring 13 and are compressed under high pressure such as exerted by a" hydraulic press into slugs or billets 14, the nature of which is such that no apparent or and the top of the bale is treated with a flux 16 such as granite dust, borax, lime, aluminum, etc., and a second bar or slab 17 is. placed thereon, the layer of flux being between the bale and the upper bar or slab as seen in Fig. 3. The billets are now put into a heating furnace of any suitable type and are heated to approximately 2200 or to a suitable welding heat. During this time the flux thoroughly permeats the bales or billets and the impurities are thereby removed from the metal as dross.

The heat treatment brings the metal to the weldingpoint as stated and while it is still hot, it is drawn and rolledinto bars such as for instance seen at 18 in Fig. 4. It will be seen that by this process, I avoid the necessity of melting the turnings and and to be rolled into a solid bar.

Bars thus produced are homogeneous in texture because of the prior admixture of the proper proportions of metals, and they are also uniform in chemical composition,

parent or visible interstices, heating the slugs or billets to substantially the welding temperature, and then rolling the heated billets into bars.

2. The herein described process of producing bar iron or steel from metal turnings which consists in mixing turnings of different chemical composition, compressing the turningsinto billets, treating the billets with a flux, heating the billets to substantially the welding temperature whereby the impurities are removed by the flux and rolling the heated billets to form bars.

3. The herein described process of producing bar iron or steel from metal turnings which consists in mixing t 'rnings of different chemical composition, a pressing the turnings into porous bales or billets, treating the top of thebillets with a flux superposing a bar or slab on each billet, heating the billets and their superposed bars or slabs' in a furnace to substantially the welding temperature, and then rolling the billets to form solid bars.

4. The herein described process of producing bar iron or steel from metal turnings whichconsists in mixing turnings of diflerent chemical composition, compressing the turnings into billets, treating the top of the billets with a flux, superposing a bar or slabon each billet, heating the billets and their superposed bars or slabs to substantially 2200 F. whereby the impurities are removed an the metal is brought to a welding temperature and rolling the billets to form solid bars.

LLEWELLYN JONES.

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