DE7234073U - Device for continuously quenching a hot metal plate moving in a limited plane - Google Patents

Description

Device for the continuous quenching of a hot moving in a limited plane Metal slat

The Neuetun® relates to a device for continuous Quenching a hot metal plate moving in a limited plane.

More precisely, the "innovation relates to a device in which two slotted quench manifolds the return fluid at an angle to the direction of movement align the Idetallplatte, which then through. two rollers provided with spiral grooves is detected · which on Attack the top and bottom of the metal plate.

The present "innovation" represents an improvement of the construction of US Pat. No. 3,420,083, which the use of rollers provided with liuten teaches. The "innovation teaches, however, the use of spiral grooves provided with lobes or Y / alzen, their JMuten by. Inclined walls are formed instead of this ICut— rolling. These rollers serve to hold or guide the Ivietallplatte during quenching. At the con-

10201

HANDLE
dr.

PATENTANWÄLTE KERN - FEILER - HÄNZEL

DIPL.-ING.

DR. RER. NAT.

DIPL - ING.

TELEX: 05 29 602 HNKL D TELEPHONE: (OS 11) 66 31 97. 66 30 91-92 TELEGRAMS: ELLIPSOID MONK

EDUARD-SCHMID-STRASSE 2 D-SOOO MÖNCHEN 90

MÜLLER

DIFL.-ING.

ZO

3AYERI3CHH MORTGAGE TjND EXCHANGE BANK MÖNCHEN NR- 318-85 IU POSTAL CHECK: MCHN 16Ϊ1 47-809

To the

German Patent Office

Munich

OUR SIGN: 2ETRiFFT:

.Hz / tr

G 72

Drever Company

Λ "7 * Ζ ΓΙ

MONKS. THE

29th August 1973

In response to the petition dated May 10, 1975

A new main claim is being submitted in the appendix, which differs from the main claim previously valid only in the clarification of the last feature of the identification part, which is now clarified as can be seen from the appendix, so that the technical facts are taken into account better than until now. As a precautionary measure, reference is made to page 3, paragraph 1, and page 9, paragraph 2, of the original description for the character of the original disclosure.

system

New main claim

Patent attorney 4.1.4. 155/73 § 4G PatentanwaltsordnLKig.

Dipl.-Ing. W. Häp.zel

3. 9. 73

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struktion genu.3 of the aforementioned US patent specification will be large Very close to the surface of the plate guided. At the point of initial impact of the water jets, the angle must be chosen so that that it is perfectly prevented that water along the plate surface opposite to the direction of movement of the plate is pushed back. When working with such amounts and pressures of water, the water collects on the top the plate, especially a wide plate, whereby the water can only escape at the plate edges. While the grooved rollers according to the said USA patent = write the water away from the initial impact area Let it continue to flow in the downward direction of the metal plate, they do not contribute to the acceleration of the water movement Plate edge at. In the pail of straight or ring-shaped hats is also an interruption of the Quenching fluid along the plate surface after the initial Encounter present. This could lead to a condition in which the under the disk surface If the heat prevailing behind these interruption lines, the temperature on the steel surface can rise to a certain value leaves, in which the steel is tempered on the surface, so that there is a loss of hardness and related Properties. The steel shows the signs of tempering through a typical bluish tinge Discoloration. Although the grooved roller of US Pat. No. 3,420,083 has limited contact with the plate surface establishes, this contact between WaI .'e interrupts and plate the movement of the quenching water at the contact line, so that no quenching water is then in contact with the metal plate at this point, ice the water from neighboring areas can flow into the dry areas. The result can be in patrol. ', V.eiol.ar. Steel on the plate surface are made by the

- To eliminate this? robie ~ e, the wall creates a spiral grooved Y / alze rr.with sloping left flanks. Zie Y.'alze plumb from the Uitze in sighting of both of them. Spiral shape, ie v; end-shaped grooved. The ".tasser v." Hitting the - ^ ut flanks is then displaced to the interruption lines in sighting of the downstream or trailing plate areas in the direction of movement, whereby the deterrent water is quickly returned to the areas where the The water flow was interrupted by the intermittent contact of the spiral grooves with the plate. This feature is of particular importance for the underside of the plate, since the water does not return to the areas when the flow is under pressure -c performed Y. -irds, which are dry due to the interruption of the return fluid by the spiral groove V-salts in contact with the plate. Since the flanks of the rollers are inclined, the ^one facing the plate surface has ". .'asser an additional 3ev; egi. ^v rig component. It should be noted that these spiral grooved rollers convey the metal plate precisely in the direction of rotation as long as the plate is pulled through between these rollers and does not slip relatively smoothly.

Practical considerations demanded so far an initial C-_schv.ir.d ⁿ "ness the quench water of approximately 45 - / sec L.vccks ensuring a vertical component Ströniungsko ~ Vo 'about 9 sec πι /, leg impact on the iustallplatte... . This required a .Va & serdruck ar. Outlet in the C-size north - .. ".-. J before. 10.5 kg / cm ^. That when using the facilities. ..R .'- /. Rur.s des Deterrent in the device gen-.ä3 ... r.: Cr.a: .r * tt; r. * J3.; - patent specification occurring main problem "ustü..a a & rin., Au.j> the V / ater about 200 zzi away from the plate.v-surface had to exit to the outside air, ^ after i.7

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Contact us to ensure that it is correct for the required job ex Spunk's and thus an even curtain of water to build. It can be seen that during the time it took the water to move from the point of exit to the point of impact streamed, a considerable decrease in speed due to an unavoidable Y / ater deflection angle, an air inclusion as well as due to friction on the ice on. This decrease in speed and the broadening of the impact tape reduces the effectiveness the resulting deterrent is significant.

According to current practice, the plate is used for prevention a surface tempering with comparatively lower Speed to allow a certain amount of time to elapse before the point of the i7asser interruption. this leiti: to warping of the plate between the points of attack before and after the quenching liquid hit and to cool the plate in such Z.ia.3, da3 the fault is fixed. With spiral grooves V.'altzen enable higher plate speeds through the quenching zone with significantly improved flatness of the plate. The maximum speeds actually used have so far been around for the thinnest panel material 9-12 m / min. This speed could then be about 18 m / min when using rollers with annular grooves increase. When using spiral grooved rollers the conveying speed is no longer due to the occurrence of surface tempering as a result of an interruption the flow of the waste liquid along the Plate limited. As a result, about 4.3 ms can diclres Plate material at speeds in excess of about 75 m / siin be guided through the quenching zone - "your Aosc · use the remaining in the ^ lc.tte after rolling out Y / arm out. Such a way of working requires

but higher disk speeds through the Abochrecksone-Sine The difficulty here is that. thick plate material, less time for rolling out, but a lot Time needed for quenching. The solution to this problem is to quench with higher plut- speeds to perform v / as through the ax spiral grooves provided folds is made possible.

By neuerungsgeniäßen distribution it is possible to use the T / ater only etv7a 50 mm from the impact leak away leave zrx. No deflector is required to convert the individual jets into a water curtain, as the liquid already has the shape of a curtain at the exit point. As a result, it is possible for a. Water pressure of only about 2.8 kg / cm as the exit point to generate a narrow band of liquid hitting the metal plate with a high vertical speed component. This results in a more sharply bundled and more effective liquid band with considerably reduced requirements for the volume and pressure of the quench water. This in turn means considerable cost savings in the water supply facilities with comparable savings in the required power for plate quenching zones of average size.

Accordingly, the innovation consists in a device for continuous quenching of a hot metal plate moving in a limited plane, its specialty consists in the fact that a fin device for creating a quenching liquid curtain, which impinges on the top and bottom of the metal plate is provided, the Liquid is ejected in the direction of movement of the metal plate, and that two rollers provided with spiral grooves with such a distance that they are at the top and bottom of the

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Attack metal plate, and in the direction of movement of the metal plate behind the point of impact of the sealing liquid are arranged.

The spiral grooves of the folds are preferably formed by screws 3-v; Extend the end of the ^{T .7alze.}

Its preferred embodiment is characterized in that da3 the device for producing a quenching liquid curtain has two similar distributors that have u .. ^ ar-gwcrdnet under the movement path of the metal plate and each have a flap that is under definition a longitudinal over the path of movement of the plate Converges slot against a rigid back part, that the slot is arranged so that it is the plate in their Direction of movement faces at an angle, da3 the flap is adjustable to change the opening width of the slot and that a quenching liquid to the distributors feeding device is provided.

The following are preferred embodiments of the innovation explained in more detail with reference to the accompanying drawings. Show it:

Pig. 1 a longitudinal section through a quenching device,

Pig. 2 a partially broken away perspective view of the quenching device with quenching distributors 13 and c. 20 as well as two spiral grooves v, rd 3v: ei naohje schal te quenching spray pipes, v: occi the metal plate runs through between the distributor and '.V ^ l ^ en pairs,

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I ·· ig. 3 eir.o ir. Further enlarged scale kept, partially broken away side view of a spiral groove V / alae,

Pig. 4 shows a section along the line IV-IV in Pig. 3,

Pig. Fig. 5 is an enlarged perspective view of one of the quench manifolds through a rope;

Pig. 6 is a partially broken away side view of a modified embodiment of a spiral grooved roller; instead of the roller according to Pig. 3 used v / can earth

Pig. 7 is a partial sectional view, on an enlarged scale, of a modified embodiment of FIG Quench manifold, which replaces the manifold according to Pig. 2 and 5 can be used, and

Pig. 8 a side view of a modified embodiment the threaded rod with nut on the flap of the distributor according to Pig. 7th

The one in Pig. The apparatus shown in FIG. 1 has a plurality of upper and lower cylindrical inlet rollers 10, 12, 14 and 16 on which a metal plate 30 at the inlet end 26 of the device hold in one plane. ! \ feben the rollers 12 and are located, an upper and a lower Abschreelc distributor 13 and 20, the Absciireck plush curtains flowing out at high speed or Plüssigkeitsfilae 62 and 64 generate, in turn on the top and bottom meet the metal plate 30 aiif. Distributors 13 and 20 -. • id in the direction of movement of the metallic plate 30 with spiral - .. "^ th provided tables 22 and 24 downstream, the a.n. Attack the top or bottom of the plate 30 and that of

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Spray tubes b2 and 34 are followed, which quench liquids on the plate 30 and in the direction of the 'Va-Izen 22, 24, 36 and 38 align. Behind the quenching spray tubes 32 and 34, two further spiral grooved rollers 36 and 38 are arranged, which in turn act on the top and bottom of the plate 30. Behind these Y / alzen are again spray tubes 40 and 42 and further spiral groove Y / alzen 44 and 46 are provided.

After the metal plate 30 comes out of the furnace, it occurs into the inlet end of the device described, where they roll through the inlet and the spiral grooves V / alzen in one Set level is held until it leaves the device at the outlet end. Main distributor 48, 50, and 54 feed the quench manifolds 18 and 20 and the quench spray tubes 32, 34, 40 and 42 with quench liquid. The spray tubes 32, 34, 40 and 42 are each provided with a number of orifices or nozzles for the outlet the quenching liquid provided. Carriers * 58 are used to hold the spiral groove V / cylinders 22, 24, 36, 38, 44 and 46, while frames 60, 61, the carriers 58 and also the rollers 10, 12, 14 and 16 as well as the manifolds 18, 20 and the spray tubes 32, 34, 40 and 42 wear. The upper rollers have a load 56 which is applied to the metal plate 30 Exerting downward force. All cylindrical roller and spiral grooved rollers 10, 12, 14, 16, 22, 24, 36, 38, 44 and are driven by a sprocket and chain motor drive according to US Pat. No. 3,423,254 at the same speed; or the same Speed driven. The rollers 10, 12, 22, 56 and 44 rotate in the opposite direction of rotation as the rollers 14, 16, 24, 38 and 46. Each roller is journaled and supported in the manner described in the above U.S. patent hung up. The upper frame 60 is preset until the upper cylindrical V / alzen 10 are set so that they attack the metal plate 30 when this after Exit from a furnace enters the device. Then the metal plate 30 runs between the rollers 12, 16,

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22, 24, 36, 38, 44 and 46 through. Quenching liquid meets with it 62 and 64 in the form of an uninterrupted, with flowing curtain of curtains at high speed the metal plate 30, whereby its cooling temperature is determined. These deterrent liquid curtains meet at an angle of 10 - 40 ° on the top and bottom of the metal plate 30, thereby preventing the quenching liquid from entering a part of the piece, i.e. the Ketallplatce 30 reached, which has not yet reached the point of impact was advanced. -

Fig. 2 illustrates in more detailed perspective Representation of the manifolds IS, 20, polygamy, the first quenching liquid curtains 62 and 64 supply, in conjunction with the spiral grooves-V / alsen 22, 24, 36 and 38 as well the additional spray tubes 32 and 34. The spiral groove Y / alzen 22, 24, 36, 38, 44 and 46 are each identical to one another, but the rollers 44 and 46 in FIG. 2 are not ' shown. The spiral grooved roller also shown in FIGS. 3 ″ and 4 22 has a coil 74 that extends from the center 76 to each end 78 and 80 (forgot, also Fig. 3). The spiral or helix ',' 4 is through inclined Y / ends 82 and 84 are formed which are inclined outwardly with respect to the axis of the roller 22 (FIG. 4). Through the Spiral-grooved roller 22, the spirals or spirals of which run from the center 76 to both ends 78 and 80, the Movement of the target liquid to the edges of the sheet 30 accelerated, In addition, the quenching liquid is to the plate areas trailing in the direction of movement of the plate distracted to the interruption parts, whereby this fluid quickly brought into those areas where the quench liquid flow is through, the intermittent Contact with the spiral groove en-Y / al ze interrupted became. The sloping walls give the scraping liquid directed towards the plate surface an additional movement component.

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In FIGS. 1, 2 and 5, the distributors 13 and 20 are illustrated in greater detail in a perspective view. De ^ distributor 13 is according to Pig. 5 is connected to the main distributor 48 via a line connection 86. The distributors 18 and 20 ε ^Ί "ηα are identical to one another, only that they are each arranged opposite one another, so that they are located directly above or below the metal plate 30 running between them and face one another. The distributor 13 has a flap 88, which diverges towards a rigid back portion 90 and defines a longitudinal slot 92 over the path of movement of the metal plate 50. The slot 92 is arranged so that it faces the metal plate 30 in the direction of movement at an angle. The flap 88 is by loosening adjustable by screw bolts 94 and 96, which penetrate oversize bores, to change the opening width of the longitudinal slot 92. The flap 88 can be displaced upwards or downwards to change the opening width of the slot 92. The flap 88 is hinged by means of a hinge 98 and can be opened after removing the screw bolt 94, so that the slot is cleaned of foreign bodies and if necessary the flap S8 can be replaced.

iv after establishing the initial line of impact 100 the metal plate 30 (Fig. 2) through the liquid curtains 63 and 64 provide the retainer spray tubes 32, 54, 40 and 42 quenching liquid on the metal plate 30 towards on each of the spiral grooved rollers, between bsv /. above or below which the spray tube in question is located.

The first quenching liquid in? O: r. the curtains o2 u: ~ d c4 hits with high G-eschv / indigl-ceix au; the '..'. ets.Z.lzl ^ .z ~ ze 30, whereby the cooling temperature of the:. "etällpla" e 30 is oesti- ~ t. The quenching liquid stirs between the spiral groove rollers 22, 24, 36, 33, 4- and 46 and follows the

guided by the V.'alcin. y.enalLpLanti · 30 · The ones from the Spray tubes 32, 34, -0 and 42 provided no additional decoction liquid h'-ln the one at the initial point of impact ICO (FIG. 2) reached on the surface of the metal plate 30

The Spirainuten-Waizen shown in Fig. 2 and _> d 24 are expensive to manufacture and somewhat difficult to machine. In order to make a spiral groove - '.. • nLzc r. Available at lower manufacturing costs, the V.'clze, indicated generally at 102 in Fig. 6, was developed. This consists of a shaft 104 ^ on v.-c-holes several separate cylindrical Spiralsegrr.ente and 103 are mounted. The spiral grooves of the segments 106 run in the opposite direction to those of the segments 108, whereby the direction of the segments in the middle 110 of the line 104 changes. The use of this Blessing has con advantage da3 the segments are produced on machines for milling screw or zwecknäßigen gear milling Άοώτ-θώ .. Through this production v / ground the cost of the spiral segments substantially reduced.

3'lg. 7 illustrates a modified embodiment of a manifold 112, which should have an adjustable opening so that accumulated debris can vieraen quickly and easily rinsed out. The distributor 112 has a U-shaped, rigid back part 114 and a flap 116, which is deflected at 113 by means of a hinge 120 at its one end and at the adjacent end of the U-shaped back part I14. The other from pivot point Il8 from ^. ^ R. ^R ite rrUo of the flap Ho converges with the back part 114 under: \ jotiegung a longitudinal slide 122 over the movement mechanism Jor y.ctallplatte 30 back / eg. The slot 122 is positioned so that it faces the metal plate in the direction of movement thereof at a square angle. To open the flap 116, a threaded rod 124 passes through both the flap

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116 as well as the U-shaped, rigid back part 114. This rod is provided at both ends with a few threads and carries nuts 126 and 128 on it. The leakage loss over the flap and back part is kept to a minimum by means of rubber seals 150 and 132 . to the flap 116 to move the Schwerikpunkt 118'herum from the back part 114 away and to open the slit 122 and to expand the --- u ^ ter 128 is rotated accordingly, so that as the accumulated debris can be flushed out. In the pail of a very long distributor several rods 124 with corresponding cutters 128 would be required, each of which would be coupled to a drive shaft of a small worm reduction gear In this way, all adjusting nuts could be turned by rotating the coupled input shafts either by hand or by an appropriate drive b are twisted simultaneously and evenly. In this way, the slot 122 could be opened or closed over its entire length for flushing or for adjusting its opening width.

In Pig. 8 is a resilient biasing device 134 between the flap 116 and that threaded onto the rod 124 Nut 128 shown.

In summary, the new rank creates a device for the continuous quenching of a hot metal plate moving in a limited plane, in which above and below the metal plate there are two quenching distributors, each with a slot, above which. Αΐ-s more corner liquid under a square in 3e'.vegunr; direction the metal plate is ejected. Are behind the point of impact of the quench liquid on the metal plate two rollers provided with spiral grooves at a distance from each other arranged that attack the top and bottom of the metal plate.

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Claims (1)

Device for the continuous quenching of hot metal plates moving in one plane, in which a device for producing a liquid detergent curtain is provided, which is pointed on the top and bottom of the metal plates / inklig and meets in the direction of movement thereof, and wherein two grooved rollers are further provided are those with the top or * with the bottom of the metal plates are in contact and in the direction of movement of the metal plates behind the point of impact the quenching liquid curtain arranged are, characterized in that the i'Tuten of the rollers Are formed spirally in order to distribute the quenching liquid as evenly as possible on the To achieve the top and bottom of the metal plates. Contraption; according to claim 1, characterized in that that the spiral hats of the rollers (12, 16 or 22, 24 or 36, 38 or 4Λ, 46) through sloping walls (82, 84) are formed with increasing roll radius are inclined inward. - 2 - Device according to claim 1 or 2, characterized in that the device for generating the quenching liquid curtain has an adjustable hinged flap (88) which forms a solid, rigid back (9o) converges towards and over the levitation orbit across the metal plates forms a longitudinal slot through which the quenching liquid reservoirs in the direction of the path of movement of the metal plates at an angle of 1o to 4o degrees is applied and that the flap (88) is adjustable in length to change the width of the slot, with lines for supplying the quenching liquid are provided. Device according to one of the preceding claims, characterized in that each of the with Rollers provided with spiral grooves (12, 16, or 22, 24- or $ 6, 38 or 44, 46) have a V / eile (1o4-) and has several separate cylindrical spiral segments (1o6, 1o8) which are spaced longitudinally from one another of the V / elle (1o4-) are arranged and the starting voi) of the V / alzennitte in the longitudinal direction of the roller with each oppositely directed spiral grooves are provided. Device according to one of the preceding claims, characterized in that the means for creating the deterrent curtain has two Has similar distributors (18, 2o), iev / eilc provided with an adjustable plate (88, 116) are that the flap (88, 116) is attached to the rigid back part (9o) by means of a hinge (98). steers and with its opposite end \ limits the longitudinal slot that smock for fixing the flap (88, 116) and for fixing a certain width of the longitudinal slide: are seen and that a device is provided, | with the help of which the flap (88, 116) around the hinge | (98) towards the rigid back part (9o) and j can be pivoted away from this to the opening width of the j Longitudinal slot for unwinding from this accumulated- I ten to change unwanted foreign bodies. · 6. Device according to one of the preceding claims, characterized in that the inclined walls (82, the spiral grooves run in the opposite direction, starting from the roll center point to each of the two Roll ends extend, with the oppositely directed spiral grooves in the middle of each other nudge. 7. Device according to one of the preceding claims, characterized in that the rigid back part has a U-shaped cross-section and that the device aur the pivoting of the plate (116) connects the back part and the flap O16) to one another Rod (124) which passes through the flap (116) and on one end of which a nut is screwed, by the rotation of which the flap can be pivoted in both directions relative to the back part is. 8. Device according to one of the preceding claims, characterized in that a Eeder (134) on the Clamp (124 ·) arranged between flap (116) and nut is, whereby the flap (116) opposite the Pressure of the scrapping liquid is resiliently held in a certain position. Device according to one of the preceding claims, characterized in that the device for generating of the quench liquid curtain has an adjustable hinged flap (88) which converges to a solid rigid back part ($) o) and over the path of movement of the metal plates forms a longitudinal slot through which the quenching liquid curtain in the direction of the movement path the metal plates under a square from Ίο to 4o is applied, with lines for supplying the quenching liquid are provided. ■■ 7? Vi on.q August 29, 1975. ! Drever Company · O / l New main claim Device for continuous quenching in a plane moving hot metal plates, with a device for generating a quenching liquid curtain is provided, which is on the top and bottom of the metal plates at an acute angle and in the direction of movement the same impinges, and two grooved rollers are also provided, which with the upper and be in contact with the underside of the metal pipelines and arranged in the direction of movement of the metal plates behind the point of impact of the quenching liquid curtain are characterized in that the grooves of the rollers are formed in a spiral shape around the quenching liquid on the top of the panel from the center of the panel to the two panel edges and around the Plate top and bottom, the duration of the interruption of the quenching liquid at the contact lines between Y / alzen and plates to decrease.