US896683A

US896683A - Art of extruding metals.

Info

Publication number: US896683A
Application number: US32104906A
Authority: US
Inventors: George Hillard Benjamin
Original assignee: Individual
Current assignee: Individual
Priority date: 1906-06-09
Filing date: 1906-06-09
Publication date: 1908-08-18
Anticipated expiration: 1925-08-18

Description

PATENTED` AUG. 18, 1908.

G. H. BENJAMIN. ART 0F EXTRUYDING METALS.

APPLIGATION FILED JUNE 9,1906.

PATENTED AUG'. 18. 190s G. H. BENJAMIN.

ART 0F BXTRUDING METALS.

APPLGATION FILED JUNE 9,-1906.

No. 896,683i

WITNESVSES: Mm @mm/fm l tion'of the atmosphere,

"trusion machine is immaterial.

GEORGE HILL/XRD BENJAMIN, 0F NEW YORK, N. Y.

y.ART 0F EXTRUDING METALS.

no. senese.

Specieaftion of Letters Patent.

Patented sag. is, isos.'

application sied nuwe, 190e. sans no. ezines.

To all whom it may concern:

Be it known that I, GEORGE HILLARD BEN- JAMIN, a citizen of the United States, residing in the city, county, andState of New York, have invented an Improvement in the Art of Extruding Metals, of which the follow# inf` is a specification. lly invention relates to van improvement in the art of extruding metals and consists in the modo of o eration ,described herein. f Heretofore 1t has been found nractically im ossible to extrude certain. mete s and metal io allo s, owing to the fact vthat they can be extruded only When at certain definite temperatures, and that it has been found impossible to raise these bodies to the required temperature and maintain them et such tem perature during the length of time necessary to convey them from the heating furnace to the extrusion machine and during the act oiz extrusion. This difficulty l have overcome by the mode of operation and apparatus which l will now proceed to describe.

Considered broadly, rny" invention consists in first heating the billet to be entrii'ded, then introducing such billet into the container without exposing it to tho coolinw acand finally pus ring the billet through the die of the container. The accompanying drawings will serve to .illustrate such apparatus es l may employ, in which A y Figure 1, is a lan view partially in section 5 Fig. 2, a parting elevation and vertical sec* tion, showing the container in the receiving position'with the billet to be extruded within the container; Fig. 3, is a similar view, showing the container in the extruding position, with the billet in the positionto be acted on ly the ram. Fig-.11, is a transverse section of he extrusion machine shown in thev drawings is that disclosed in U. S. Patent No. 819,261, granted to W; A. `Wood, May 1, 1906,

and consists essentially of the followlngparts: j y A container', 5, a h

draulic rain 6, und a die 7, .The particular ormor construction of exfor'rnsrexist, and they all may beused.- It is only necessary that the container should he .mounted upon trunnions 8, yand means be provided, suchas a crank 9, and gears 10, for

changing-fthe position fof the container from Difi'erent e horizontal, 'as shown in Fig. 3to vertical, as

shown 1n Fig. 2, or preferablyv to :pri'ivide for complete rotation of the cylinder ortho perf pose which will be hereinafter described.

" The billets to be extruded. l prefertofheat` ro ressivel i. e. as th'ev are carriedjito- P il' Y: f

wards' the extrusion machine, and yto, ac-`y eornplish this result l provide a rotary heat,v i

Thisapparetus consists esl ing ap' aratus.

sentiel y of a series oi furnaces 12", 13, '1. .and

15, supported upon a spider 16, niountedto rotate raround a cylindrical tubular-bearing 1.7. Means is provided for rotating the spider, which consists of a gearlft, worm 19, s

:dit 20,

bevel gears

21, 22, a hand vheel 2S. 'Gf course, any other suitable means may be provided 'for rotating the furnaces.

Each of the furnaces i2', 13, 14 and l5 consists oi o. tubular casing 24, lined wyith. lire brick, and provided with a movable bottoni 25.

ers 26, through which gas and air may be ad- These furnaces' are provided with burnmitted and subsequently ignited within the furnace. Preferabl f. anon-oxidizing Haine is employed.- The caring ,17 is hollow and through it the gas is carried, being introduced through an opening 27, and emitted through an opening 23, into a channel 29, communicating with a pipe 30. The nir is introduced through a channel 31, surrounding the shaft of thespider, and is emitted into a channel 32, communicating it will he observed that the

pipes

30 and 33 combine, asis usualLto form the burners 26.

Situated under the container 5 is a hy draulic cylinder 3st-, an externalmember 35, adapted to cooperate with the movable bottoni 25 ofthe furnaces as f they are rotated over vthe cylinder 34.

The furnaces l2, 13, 14 and 15 are shown as open at the top, and covering three of these urnacesis a' disk Serden 36, provided with openin's 37. This screen has a projection 38, which co-acts with the y the container is rotated from the vertical. to the horizontal position, and serves to prevent the heated billet from sli ping out of the container during the act ochanginv from one position to the other', 'Situated over the screen'3-6 are covers 40 for the furnaces Above the dish 36, and between it andthe extrpsion ,mae are, there might bel placedV a hood ior carnitine away with a pipe 33.

the piston of which has container 5, whenA the .products oficoxnles bustion from the furnaces, but owing to the fact that the combustion in these furnaces is perfectly controllable, such hood is not essential.

ln the drawings l have shown tour tun naces. l do not limit myself to the 'number of furnaces, nor do l. limit mysclt i rise to the construction disclosed, it may be very considerably vr departing from the intent of in in'.

'The mode of operation which l. empio-v is as follows: The billet 50, to be eiitr'u i.

inserted into the furnace l2 at the joositioi. marked. A, `and the laxne turned into tn furnace; After a time the lurnace l2 is rctated to the 'position marked "3, then to the position marked C, then to the post-v tion marked D. l/Vhen the furnace l' in the D position, the cont/einer in from the horizontal to the vertical positie. i. e., from theA position ot Fig. 3 to the pif tion of Fig. 2. The hydraulic cylinder Sift then operated, with the etleet that its 'i'.einv l ber moves under the movable bottoni 25 and lifts the billet into the cavity ol the container 5. Immediately, the container is rotated to the position shown in Fig. f5, and container and die 'Y adjusted other. The .rarn 6 is then. driven container and against the billet to i ish tbc billet through the die 7. inin'iefiia atter- .Wards, the ram withdrawn ai the n nei-cc l5, which has followed the increment o` furnace l2, brought under the container and the action repeated. t sometimes harpens that the end ol a billet .sticks in the lor- Ward end of the container, in which case it is necessary to remove it. lts removal can be facilitated by re'vcrsely rotating the cont: 'ner 5, so that ite forward end shall lie over an empty Furnace with the llame in .lull play in the furnace. The heat from the Aurnacc sullicicnt to inelt the material in the con taincr, so that it may be readily removed.

ln the case ol alloys, as for instance, cor-- tuin zinc alloys, which are triable above and below their cxtruding temperature, l.i heet thc billet to a temperature above 'that at which it can be extruded, that is, the billet is progressively heated in the lurnuces l2, l i4 and l5, or .inonc ol" them, as l'or instance, the furnace li., into which the billet may inserted when said furnace in the location designated by A. the 'l'uri'iuce l if;

stepped around l'ronl. the position to posi-- tion il, to position und to position l), the billet may be progressively lmatcd. or it nniy be progressively heated tlnoiurholit any portion of the movement olA the lui-nace l2. .l then reduce the temperature olA the billet when the furnace occupies the posi tion.l),yno heat being turned on, to an ex-` trudahle condition, after which the billet is introduced directly into the container Without exposing it to the atmosphere, and then u to euch into the l subjected to pressure to drive it throughthe i die. @it course, the temperature of the, billet might be reduced when the furnace"\vas 'in seine other position than that indicated by lll, as, for instance, when at C, or When passing from C to D and at D.

The construction of in lli, and l5 is such that ly character of the atmosphere therein. When heating billets el certain metals and alloys, is very desirable to maintain a reducing or non-oxidizing atmosphere within the furnace, so es to prevent oxidation. As the billet may he inserted directly into the container from the furnace .containing a reducing atmosphere, l avoid exposing it to the atmosuhcre, that is, atmospheric air, which would have a tendency te oxidize the billet. The necxidining atmosphere o'i the furnace dis es atmospheric air in the immediate ity et the mouth of the furnace, as is understood, and by my process I sensing the heated billet to the inllu el an. oxidizing atmosphere.

i thus described iny invention, l

furnaces l2, 13,

bf extrudiug 'if/iden consists in exposing' the billet to heat until 't is in an extrtulable condition, i into the container without exi the atmosphere, and iinally subit to pressure to force it through a die. p'iovcnicnt in the art of extruding' ucli. consists in subjecting the billet n heat and a non-oxidizing ie in un extrudablc condiinto a container without ine tais atinosnhr. tion, iii't o lncml exposing it 'to subiectii'ag it to y die. K

An improvement in the art oi extruding metals which consists in `lirst heating the billet to a temperature shove that at which it can be extruded, then reducing the tenuicrature to oi-ing it to an extrudable condition, thon introdiufing the billet into a container ndhout exposing it to the :'Ltinosphcre, and then subjecting it to Vpressure to drive the billet through a die. l

5. An i1nprovcincnt in the art of extruding metals which. consists in heating the' billet 'while advancing it toward the container, then introducing it quickly into the c`on` taincr, and then subjecting it to vpressure to dri vc the billet through a die.

nn Iinuirevement in the art el' extruding ure to force `it through a .1 1 ruding temperature, and maintaining l it at suon. temperature until extruded.,

atmosphere, and finally metals which consists .in heating the billet to' may regulate the 7. An im rovement in the art of extrudingV 8. Anim rovernent in the art oi extruding metals Whie consists in sul jeet-ingtl1e billet to a regulatable temperature to heat it to the extrudlng temperature, and maintaining said billet at the extruding temperature until ex- 9. An improvement in the art of extruding 'metals whiqh consists in sub'ecting the billet ractically maintaining.

tion, and maintaining it at apiroximately such temperature until extrude 10. An improvement in the art of extruding metals ormetallic alloys, volatile at a high temperature', which consists in applying heat until such a body is in an extrudable.

condition, then introducing such body into a container without ex osin it to the atmosphere, and immediate y su jectng it to pressure to' force the body through a die.

In testimony whereof, I aiix my signature, in 'the presence of two Witnesses.

i GEORGE BILLARD BENJAMIN. Witnesses: FRANK OCoNNon, M. G. CRAWFORD.