US3410734A - Quench system - Google Patents

Quench system Download PDF

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Publication number
US3410734A
US3410734A US426277A US42627765A US3410734A US 3410734 A US3410734 A US 3410734A US 426277 A US426277 A US 426277A US 42627765 A US42627765 A US 42627765A US 3410734 A US3410734 A US 3410734A
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United States
Prior art keywords
strip
quench
channel
liquid
quenching
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Expired - Lifetime
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US426277A
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English (en)
Inventor
Harold L Taylor
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Inland Steel Co
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Inland Steel Co
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Filing date
Publication date
Application filed by Inland Steel Co filed Critical Inland Steel Co
Priority to US426277A priority Critical patent/US3410734A/en
Priority claimed from US484616A external-priority patent/US3360202A/en
Priority to IL24963A priority patent/IL24963A/xx
Priority to ES0321850A priority patent/ES321850A1/es
Priority to DE19661508406 priority patent/DE1508406C/de
Priority to DK25366*#A priority patent/DK131476C/da
Priority to CH63366A priority patent/CH488806A/de
Priority to LU50281A priority patent/LU50281A1/xx
Priority to BE675282D priority patent/BE675282A/xx
Publication of US3410734A publication Critical patent/US3410734A/en
Application granted granted Critical
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—Quenching devices
    • C21D1/63—Quenching devices for bath quenching
    • C21D1/64—Quenching devices for bath quenching with circulating liquids
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/573—Continuous furnaces for strip or wire with cooling

Definitions

  • This invention relates to a novel method and apparatus for continuously quenching metal strip.
  • the quench system of the present invention is applicable to the continuous quenching of metal strip generally, but the invention is particularly advantageous and useful in t-he quenching of steel strip to obtain a microstructure which is at least partially martensitic and preferably fully martensitic.
  • the principal constituents of steel which determine its properties are ferrite and cementite.
  • austenite which is a solid solution of carbon or cementite in ferrite.
  • pearlite a characteristic lamellar structure
  • martensite which is a body-centered tetragonal structure in which the carbon atoms are thoroughly dispersed. Martensitic steels are characterized by high tensile and yield strengths.
  • plain carbon steels of low carbon content (.03- .25 wt. require extremely rapid quenching in order to achieve a substantially fully martenstic structure.
  • low carbon steel strip must be quenched from the austenitizing temperature to below the temperature for the start of martensite formation in from about .l to about .4 second.
  • the quenching must be accomplished uniformly so as to obtain a uniform microstructure and so as to avoid excessive warpage 3,410,734 Patented Nov. 12, 1968 or distortion of the strip.
  • no satisfactory means has been known to obtain this result.
  • the broad object of the present invention is to provide novel and improved means for rapidly and continuously quenching a metal strip.
  • a more particular object of the invention is to provide novel continuous means for rapidly and uniformly quenching low carbon steel strip so as to obtain a martensitic microstructure and acceptable strip tlatness.
  • a further object of the invention is. to provide a novel and improved method for achieving the aforementioned results.
  • Another object of the invention is to provide a novel and improved apparatus for achieving the aforementioned results.
  • FIG. l is a schematic diagram of a continuous heat treating and quenching line for the production of martensitic steel strip
  • FIG. 2 is an enlarged vertical ⁇ sectional view of the quench apparatus of the line shown in FIG. l;
  • FIG. 4 is a horizontal sectional view taken along the line 4-4 of FIG. 3;
  • FIG. 5 is an enlarged fragmentary :internal view taken along the line 5-5 of FIG. 4;
  • FIG. 6 is an enlarged cross-sectional view taken along the line 6-6 of FIG. 5;
  • FIGS. 7 and 8 are fragmentary views similar to FIG. 2 but showing modifications of the apparatus
  • FIG. 9 is a schematic view showing another embodiment of the quench apparatus of the invention.
  • FIG. l0 is a schematic view showing still another embodiment of the quench apparatus.
  • FIG. 11 is a fragmentary view similar to FIG. l0 but showing a further modication.
  • the quench system of the present invention is illustrated in FIG. l as embodied in a continuous heat treating and quenching line for making martensitic steel strip.
  • the resulting martensitic steel strip may be tin plated, galvanized, or aluminum coated, whereby a coated steel product of exceptionally high tensile strength is obtained because of the microstructure and Without the development of poor ductility and a high degree of anisotropy which are characteristic of severely cold worked products.
  • the steel employed as the starting material is plain carbon steel having the following composition range (wt. percent: carbon .O3-.25, manganese .20-.60, phosphorus .05 max., sulfur .03 max., and the balance iron with residual elements in the usual amounts.
  • the steel strip starting material is in work hardened or as-cold reduced condition, and although the gauge of the strip will usually and preferably be within the range of from about .002 to about .050 inch, the invention in its broadest aspect is also applicable to steel strip having a thickness as low as about .0002 inch andl as high as about .100 inch.
  • steel strip 10 is fed from a payoff reel 11 through a bridle 12 and a looper 13 to a conventional cleaning and rinsing step 14 in which the residual rolling oil is removed.
  • a conventional cleaning and rinsing step 14 in which the residual rolling oil is removed.
  • an alkaline cleaning medium may be used either with or without electrolytic means.
  • the cleaned strip then passes through the usual roll system and downwardly through a furnace 15 where the steel strip is heated to a uniform temperature above the A1 critical point so that the steel is at least partially austenitized.
  • This temperature may range from about 1330 F. to as high as about 2l00 F., dependent upon the carbon content, but from a practical standpoint effective results may be obtained within the range of from about 1330 F. to about 1750o F.
  • the steel strip In order to obtain a fully martensitic product the steel strip must be heated above the A3 critical point, i.e., to a temperature within the range of from about 1525 F. to about 2100o F. and particularly within the range of from about 1525 F. to about 1750 F.
  • the heated strip passes into a quench system 16 (comprising the subject matter of the present invention and more fully described below) where the strip is rapidly quenched to ambient or room temperature so as to obtain at least a partially martensitic microstructure.
  • the strip is quenched at a rate in excess of the critical cooling rate so that substantially all of the austenite is transformed to martensite.
  • the oxide scale formed during quenching is removed from the surface of the strip by pickling in an acid dip 17, and after passage through another looper 18 and bridle 19 the martensitic steel strip is recoiled on a take-up reel Z0.
  • the quench system 16 comprises a tank 30 provided with a drain 30 and a strip exit chute 31 and containing a sinker roll 32 journaled at the sides of the tank 30 by means of water seaed bearings 32.
  • Water, or other quench liquid is supplied continuously to the tank 30 through an inlet 33.
  • Extending upwardly from the tank 30 is an elongated conduit section 34 of rectangular cross-section which provides a restricted quench channel 35. Quench water flows upwardly through the conduit 34 and spills over the upper edge into a trough 36 having a rectangular cross-section and surrounding the conduit 34.
  • An upright rectangular baffle or weir 37 extends upwardly from the bottom of the trough 36 surrounding the conduit 34 and terminating below the upper edge of the conduit 34.
  • a tubular connecting or seal section 33 Extending downwardly from the outlet end of the furnace 15 is a tubular connecting or seal section 33 the lower end of which extends into the trough 36 below the upper edge of the weir 37 and disposed between the conduit 34- and the weir 37. Effluent water fiows over the upper edge of the weir 37 and is discharged at one end of the trough 36 through drain lines 39 extending from the bottom thereof.
  • the water level in the space between the weir 37 and the conduit 34 is determined by the height of the weir 37, it will be recognized that the lower end of the connecting or seal section 38 is sealed by the water confined in the rectangular weir 37 so as to prevent infiltration of air into the furnace 15.
  • a reducing or other non-oxidizing gas may be supplied to the section 38 (by means not shown) for passage upwardly through the furnace 15, thereby preventing oxidation of the strip.
  • a plurality of View ports 46 and 40 are provided in the tubular section 38 and the conduit 34, respectively, to permit observation of the quench action.
  • a plurality of submerged jet or spray units 41 are provided in the opposite walls of the conduit 34 for directing streams of liquid toward opposite sides of the strip 10 across the entire width thereof.
  • a supply conduit 42 having a control valve 43 and communicating with a main header 44.
  • each spray unit 41 comprises a pair of elongated angle members (FIG. 6) welded together to provide an elongated box-like structure having a front wall 46, a rear wall 47, an upper wall 48, and
  • the quench-liquid supply conduit 42 extends into an opening in the rear wall 47, and an elongated discharge slot 52 is provided in the front wall 46 extending substantially the entire length of the unit 41 and across the entire width of the strip 10.
  • baffles 52 and 53 extend between the end plates 51 in transversely spaced relation between the front wall 46 and the rear wall 47.
  • the baffle 52 extends from the upper wall 48 and is spaced slightly from the bottom wall 49, as at 52
  • the bafiie 53 extends upwardly from the bottom wall 49 and is spaced slightly from the upper wall 48, as at 53.
  • the restricted spacing between the free edges of the baffles 52'53 and the walls 49-48 serves to trap any large particles of foreign material and thereby prevent obstruction of the orifice 58.
  • the strips 54 may be adjusted so that the baffle clearances 52" and 53 are more restricted than the orifice 58, thereby insuring that no foreign particles will clog the orifice 58.
  • the submerged spray units 41 are mounted in suitable openings in the walls of the conduit 34 with the orifice strips 54 projecting slightly into the channel 35 so that sheets or curtains of water are directed from the slit orifices 58 substantially perpendicularly toward Opposite sides of the strip 10.
  • the sheet or curtain of water ⁇ from an elongated rectangular orifice, such as 58 may be characterized as having two-dimensional flow, i.e. the flow is identical in parallel planes so as to extend uniformly across the width of the strip 10.
  • the heated steel strip 10 moves downwardly from the furnace 15 it passes through the seal section 38 and enters the upper end of the water filled quench channel 35 where it is immediately immersed in the upwardly flowing stream of wate-r.
  • the submerged spray units 41 direct water streams against the strip in a direction generally normal to the path of movement of the strip, thereby creating a high degree of turbulence in the uppermost portion or strip entry end of the quench channel.
  • the strip 1t] leaves the lower end of the quench section 34 it enters the tank 30, passes bene-ath the roll 32, and emerges fro-m the exit chute 31.
  • the dimensions of the conduit 34 are as restricted as possible so as to provide a relatively high velocity of water ow through the quench channel 35 while at the same time allowing suflicient clearance to permit passage of thestrip 10 Without scraping the walls of the conduit.
  • uniformity of quenching is essential not only for the sake of obtaining a strip having uniform microstructure and uniform physical properties but also to avoid warpage and distortion of the strip.
  • Irregular vaporization of the water or other quenching medium in contract with the strip can result in substantial differentials in heat transfer rates between portions of the strip surface in contact with liquid water and other portions in contact with Water Vapor. These differentials cause different rates of contraction in the steel strip and result in quenching stresses and deformation.
  • desired uniformity of quenching is realized as a result of several cooperating factors.
  • the provision of the restricted quench channel 35 results in a water velocity relative to the strip which, by Way of example, may be on the order of 1 to 10 ft./sec. in a direction generally parallel to the strip 10.
  • the submerged sprays 41 are designed so as to provide Water streams in a direction generally normal to the strip 10 at relatively low pressures and relatively high flow rates so as to create substantial turbulence within the channel adjacent the strip entry end thereof.
  • the water pressure in the sprays 41 may be on the order of to 30 p.s.i. at the inlet 42 and on the order of 5 to l0 p.s.i. at the discharge slot 52.
  • the submerged jets 41 are designed to create internal turbulence in the quench channel, nevertheless, the surface of the liquid in the channel where the strip 10 first contacts the quench liquid is maintained substantially smooth, non-splashing, and non-turbulent so that every point across the width of the strip makes initial Contact with the quench liquid at substantially the same time
  • the low pressure of the high flow rate submerged jets 41 makes it possible to provide the desired surface smoothness while at the same time providing the required internal turbulence below the liquid surface.
  • a quenched strip of at least partially martensitic structure is obtained which is either flat enough for its intended use or can easily be rolled to atness.
  • any suitable quenching liquid may be used including Water, brine or other aqueous salt solution, oil, liquid nitrogen, etc.
  • the preferred quenching media are water and aqueous brine or other aqueous salt solutions.
  • the volumel rate of fiow of the quech liquid must be high enough to achieve the cooling rate required to transform the austenite to martensite, and the turbulence of the quench liquid relative to the strip, particularly at the strip entry end of the quench channel, must be great enough to prevent the accumulation of vapor film which would lead to non-uniformity of quenching and consequent distortion of the strip.
  • Typical line speeds may range from about 100 ft./min. to about 2000 ft./min. dependent upon the gauge of the strip and the carbon content.
  • the water introduced to the quench system may be at the ordinary available temperature, e.g. from about 35 F. to about 65 F., and the steel strip will normally be cooled from its austenitizing temperature range of 13302l00 F. (15252l00 F. in the case of a fully martensitic product) to approximately the water temperature before leaving the quench tank.
  • the water or other quench medium may be recirculated through a heat exchanger for temperature control.
  • the quenched strip can readily be rolled, as on a temper mill, to provide adequate commercial flatness for any desired end use.
  • successful flattening is usually obtained by a single pass through a twin stand four high temper mill, each stand having two work rolls and two back-up rolls. Because of the unusual hardness of a fully martensitic strip, the work rolls may have a high degree of roughness without impairing the surface of the strip, thereby providing adequate flattening in a single pass.
  • quench systems have been proposed heretofore in which a continuous metal strand is passed through a restricted quench channel, such a system is not adequate when extremely rapid and uniform quenching is necessary
  • the quenching of low carbon steel strip to obtain a martensitic microstructure while at the same time retaining acceptable iiatness in the strip is a particularly difcult problem.
  • the most important feature of the invention is the provision of the submerged spray units 41 or other equivalent means for inducing turbulence in the quench channel 35 adjacent the strip entry end thereof by directing low pressure-high volume streams of quench liquid generally perpendicularly against the strip and uniformly across the width of the strip.
  • the submerged spray units 41 having the rectangular or slit orifices 58 are highly effective for this purpose because of their ability to direct against the strip a plurality of sheets or curtains of quench liquid which have a ⁇ relatively high velocity for the flow rates involved and which are essentially uniform across the width of the strip.
  • the volume o'w rate and velocity of the Water or other coolant streams Idischarged from the orifices 58 are controlled by means of the valves 43 and adjustment of the spacing between the orifice strips S4.
  • the quench channel may be provided with transverse barangs extending inwardly from the outer walls of the channel toward the strip so as to direct a portion of the quench medium from its generally longitudinal path parallel with the strip to a transverse path generally normal to the strip.
  • the invention relates particularly to the quenching of steel strip which has been heated to an austenitizing temperature so as to obtain a product which is at least partially martensitic.
  • the invention has particular utility in the quenching of any metal strip which has been heated 7 to a temperature which would normally cause film boiling of the quench liquid as distinguished from nucleate boiling.
  • film boiling As is well known, under conditions of film boiling the rate of heat transfer is diminished drastically and it also becomes increasingly diiiicult to obtain uniform quenching.
  • iilm boiling is avoided by the creation of suflicient turbulence to avoid vapor accumulation even though the temperature of the metal surface is such that film boiling would normally be expected.
  • the invention is useful in quenching metal strip which has been heated to a minimum temperature of about 800 F.
  • FIG. 7 shows a modification of the quench system which is similar to the arrangement of FIGS. 2 to 6 eX- cept that an additional pair of spray units 61 are provided in the seal section 38.
  • These spray units 61 are identical in construction with the units 41 but are spaced above the surface of the water in the conduit 34 instead of being submerged in the quench channel.
  • the spray units 61 are oriented downwardly at an angle so as to direct curtain jets of water against opposite sides of the strip closely adjacent the point where the strip 10 lirst contacts the surface of the water in the channel 35.
  • jetS or sprays from the units 61 provide additional initial quenching, contribute further to the desired turbulent condition at the entry end of the quench channel, assist in maintaining surface smoothness of the water, and also serve to seal off the surface of quench bath in the channel 35 so as to further inhibit vapor evolution.
  • FIG. 8 shows another modification similar to FIG. 2 but in this instance a plurality of pairs of pinch rolls 62 are mounted in the quench channel 35 for engaging opposite sides of the strip 10.
  • the pinch rolls 62 are preferably disposed intermediate the submerged sprays 41 so that the rolls do not interfere with the water streams from the sprays.
  • FIG. 9 illustrates a slightly different embodiment of the invention wherein an enlarged hood or enclosure 63 is provided around the strip 10 as it emerges from the furnace.
  • the bottom of the enclosure 63 has a central upwardly projecting portion 64 which communicates with a quench conduit 66 similar to the conduit 34 in FIGS. 2-6.
  • Submerged spray units 67 which are the same as the units 41 in FIGS. 2-6, are mounted in the opposite walls of the conduit 66 for the same purpose previously described.
  • the lower end of the conduit 66 (not shown) is connected to a tank 30 just as in the previously described embodiments.
  • a pair of large diameter pinch rolls 68 are housed in the enclosure 63 and engage the opposite sides of the strip 10 before the latter enters the conduit 66.
  • the rolls 68 are also engaged by smaller diameter back-up or squeegee rolls 69.
  • a pair of upright weirs 71 extend from the bottom of the enclosure 63 outwardly of the rolls 68 and high enough to enclose the lower portions of the rolls, and the water flowing upwardly through the quench channel in the conduit 66 overflows the upper edges of the weirs 71 and is discharged through outlets 72, as indicated by the arrows.
  • pinch rolls 68 in the location shown in FIG. 9 insures a llat strip at the point where the strip first contacts the quench medium.
  • the pinch rolls 68 also serve to seal olf the upwardly flowing quench medium from the conduit 66 so as to insure that there is noexposed liquid surface and that there is uniform initial contact between the quench liquid and the strip across the width of the latter.
  • a high upward velocity of liquid in the conduit 66 and a high degree of induced turbulence by the sprays 67 can be maintained.
  • the pinch rolls ⁇ 68 are maintained at the temperature of the quench medium by being partially submerged in the body of quench medium coniined by the weirs 71.
  • the high degree of strip flatness as the strip enters the quench channel from the pinch rolls 68 also permits the useof a more'rstricted conduit 66 without danger of the strip'scrapir'ig the conduit walls thereby providing higher liquid Velocities and higher heat transfer rates for a given quench liquid flow rate.
  • Te embodiment of the invention illustrated in FIG. 10 differs from the form of FIGS. 2 to 6 primarily by the use of a concurrent ow relationship between the quench medium and the strip instead of the countercurrentlioyv arrangement of the previous embodiments.
  • the strip 10 as it emerges from the furnace enters a central opening 73 in the top wall 74 of a quench tankvr76 containing a supply 77 of water or other quench liquid.
  • a generally Ulshaped partition depends from the top wall 74 to provide spaced outer and inner partition walls 78 and 79 interconnected by bottom portions 81.
  • a pair of depending ams 82 also extend from the top 4wall 74 between the respective pairs of partition walls 78-79 and terminate above the botton portions 81.
  • the quench medium is pumped upwardly through conduits 83 by pumps 84 from the main supply 77 in the tank 76 and is discharged through coolers or heat exchangers 85 into the spaces between the partition walls 78 and 79.
  • the quench liquid flows downwardly and thence-upwardly around the baffles 82 and overows the upper edges of the walls 79 into a restricted quench channel 86 defined between the walls 79.
  • the strip 10 passes downwardly through the restricted channel 86 it is immersed in the quench medium which has a higherl level in the channel 86 than in the main portion of the tank 76, the difference in level being exaggerated inthe drawing for the sake of illustration.
  • the quench medium flows downwardly through the channel 86 tothe main quench supply 77 and ⁇ is recirculated by the pumps 84.
  • the Tstrip 10 passes downwardly around a sinker roll' 87V and then passes angularly out of the tank 76 through a chute 88.
  • the walls 79 of the quench channel 86 are provided with submerged spray units 89 identical with the units 41- heretofore described
  • separate inlet and outlet water lines could be provided as in the previous embodiments.
  • FIG. 11 the structure is the same as FIG. 10 except that a plurality of pinch Vrolls 91 are mounted in the quench channel 86 between the sprays 89.
  • the additional benetits of pinch rolls in the quench channel are obtained as described abovein connection with FIG. 8.
  • quench liquid is introduced into said channel at one end thereof and additional quench liquid is introduced into said channel at said submerged location and is directed substantially perpendicularly against the opposite surfaces of said strip.
  • a continuous method of making martensitic steel strip which comprises the steps of passing plain carbon steel strip having a carbon content of from about .03 wt. percent to about .25 wt. percent continuously through a heating zone fand heating the strip to a temperature above the A1 critical point so as to at least partially austenitize the steel, immediately thereafter passing the strip continuously in a generally downward path through an elongated restricted quench channel, passing a quench liquid continuously through said channel lwith the strip immersed in the quench liquid and with the quench liquid flowing at a high velocity relative to the strip and generally parallel to the strip, and also directing quench liquid substantially perpendicularly against the opposite surfaces of the strip and uniformly across the width thereof at a submerged location within said channel adjacent to but spaced from the liquid surface at the strip entry end of said channel, whereby to create substantial turbulence within said channel at said strip surfaces so as to prevent vapor accumulation at said strip surfaces while maintaining said liquid surface substantially smooth and non-turbulent at the location where the strip initially contacts the que
  • the method of Claim 9 further characterized in that the step of directing quench liquid substantially perpendicularly against the opposite surfaces of the strip is accomplished by introducing yadditional quench liquid into said channel in liquid sheets directed against opposite surfaces of the strip, said liquid sheets extending uniformly across the width of the strip at said submerged location.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
US426277A 1965-01-18 1965-01-18 Quench system Expired - Lifetime US3410734A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US426277A US3410734A (en) 1965-01-18 1965-01-18 Quench system
IL24963A IL24963A (en) 1965-01-18 1966-01-12 Method and apparatus for continuously quenching metal strip
DK25366*#A DK131476C (da) 1965-01-18 1966-01-17 Fremgangsmade til bratkoling af et opvarmet metalband samt bratkolingsapparat til udforelse af fremgangsmaden
DE19661508406 DE1508406C (de) 1965-01-18 1966-01-17 Vorrichtung zum Abschrecken eines Stahlbandes
ES0321850A ES321850A1 (es) 1965-01-18 1966-01-17 Un metodo para templar de manera continua una chapa metalica que se mueve en un liquido de enfriamiento, con su aparato correspondiente.
CH63366A CH488806A (de) 1965-01-18 1966-01-18 Verfahren und Einrichtung zum kontinuierlichen Abschrecken eines warmen Metallbandes mit einer Abschreckflüssigkeit
LU50281A LU50281A1 (da) 1965-01-18 1966-01-18
BE675282D BE675282A (da) 1965-01-18 1966-01-18

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US42622765A 1965-01-18 1965-01-18
US426277A US3410734A (en) 1965-01-18 1965-01-18 Quench system
US484616A US3360202A (en) 1965-09-02 1965-09-02 Uniform thin fluid sheet type spray device

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US3410734A true US3410734A (en) 1968-11-12

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US426277A Expired - Lifetime US3410734A (en) 1965-01-18 1965-01-18 Quench system

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BE (1) BE675282A (da)
CH (1) CH488806A (da)
DK (1) DK131476C (da)
IL (1) IL24963A (da)
LU (1) LU50281A1 (da)

Cited By (15)

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FR2058895A5 (en) * 1969-08-19 1971-05-28 Centre Nat Rech Metall Wire patenting process
US3722077A (en) * 1971-03-05 1973-03-27 South Wire Co A method of cooling and drying a wire utilizing an induced air wipe
US3724826A (en) * 1970-07-03 1973-04-03 Nippon Kokan Kk Method and apparatus for water quenching metal strips
US3792844A (en) * 1972-05-31 1974-02-19 G Berry Quenching method and apparatus
US3901739A (en) * 1968-04-19 1975-08-26 Licencia Talalmanyokat Method of making light gage members of unalloyed low carbon steel sheets
US4046604A (en) * 1975-04-30 1977-09-06 Nippon Kokan Kabushiki Kaisha Method for continuously quenching electrolytic tin-plated steel strip while preventing quench stains
US4052235A (en) * 1974-12-24 1977-10-04 Nippon Kokan Kabushiki Kaisha Method of preventing oxidation during water quenching of steel strip
US4052234A (en) * 1973-11-05 1977-10-04 Nippon Kokan Kabushiki Kaisha Method for continuously quenching electrolytic tin-plated steel strip
US4076222A (en) * 1976-07-19 1978-02-28 Schaming Edward J Runout cooling method and apparatus for metal rolling mills
US4121954A (en) * 1974-09-10 1978-10-24 British Steel Corporation Cooling method for metal articles
EP0026032A1 (en) * 1979-07-24 1981-04-01 SAMUEL STRAPPING SYSTEMS (a division of SAMUEL MANU-TECH INC.) Heat treatment process and apparatus
US4575052A (en) * 1981-11-19 1986-03-11 Kawasaki Steel Corporation Apparatus for continuously quenching a steel plate
US4577482A (en) * 1984-06-18 1986-03-25 Wean United, Inc. Method and apparatus for treating work rolls in a rolling mill
EP0210847A2 (en) * 1985-07-25 1987-02-04 Kawasaki Steel Corporation Method and apparatus for cooling steel strips
US5686043A (en) * 1993-03-25 1997-11-11 Carnaudmetalbox Plc Process and apparatus for producing coated metal

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Publication number Priority date Publication date Assignee Title
JPS61217531A (ja) * 1985-03-22 1986-09-27 Kawasaki Steel Corp 鋼帯の冷却方法

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US2776230A (en) * 1951-10-22 1957-01-01 United States Steel Corp Method and apparatus for quenching pipe
US3027308A (en) * 1959-06-02 1962-03-27 Nat Steel Corp Method of quenching metal articles
GB931153A (en) * 1958-11-12 1963-07-10 William Cull Improvements in or relating to heat treatment of components
US3148093A (en) * 1960-12-07 1964-09-08 Westinghouse Electric Corp Heat treating method and apparatus for elongated workpieces
US3240480A (en) * 1962-12-26 1966-03-15 Int Harvester Co Heat treating apparatus for crankshafts

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US2348232A (en) * 1941-02-20 1944-05-09 Oscar C Trautman Quench pot
US2776230A (en) * 1951-10-22 1957-01-01 United States Steel Corp Method and apparatus for quenching pipe
GB931153A (en) * 1958-11-12 1963-07-10 William Cull Improvements in or relating to heat treatment of components
US3027308A (en) * 1959-06-02 1962-03-27 Nat Steel Corp Method of quenching metal articles
US3148093A (en) * 1960-12-07 1964-09-08 Westinghouse Electric Corp Heat treating method and apparatus for elongated workpieces
US3240480A (en) * 1962-12-26 1966-03-15 Int Harvester Co Heat treating apparatus for crankshafts

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3901739A (en) * 1968-04-19 1975-08-26 Licencia Talalmanyokat Method of making light gage members of unalloyed low carbon steel sheets
FR2058895A5 (en) * 1969-08-19 1971-05-28 Centre Nat Rech Metall Wire patenting process
US3724826A (en) * 1970-07-03 1973-04-03 Nippon Kokan Kk Method and apparatus for water quenching metal strips
US3722077A (en) * 1971-03-05 1973-03-27 South Wire Co A method of cooling and drying a wire utilizing an induced air wipe
US3792844A (en) * 1972-05-31 1974-02-19 G Berry Quenching method and apparatus
US4052234A (en) * 1973-11-05 1977-10-04 Nippon Kokan Kabushiki Kaisha Method for continuously quenching electrolytic tin-plated steel strip
US4121954A (en) * 1974-09-10 1978-10-24 British Steel Corporation Cooling method for metal articles
US4052235A (en) * 1974-12-24 1977-10-04 Nippon Kokan Kabushiki Kaisha Method of preventing oxidation during water quenching of steel strip
US4046604A (en) * 1975-04-30 1977-09-06 Nippon Kokan Kabushiki Kaisha Method for continuously quenching electrolytic tin-plated steel strip while preventing quench stains
US4076222A (en) * 1976-07-19 1978-02-28 Schaming Edward J Runout cooling method and apparatus for metal rolling mills
EP0026032A1 (en) * 1979-07-24 1981-04-01 SAMUEL STRAPPING SYSTEMS (a division of SAMUEL MANU-TECH INC.) Heat treatment process and apparatus
US4575052A (en) * 1981-11-19 1986-03-11 Kawasaki Steel Corporation Apparatus for continuously quenching a steel plate
US4577482A (en) * 1984-06-18 1986-03-25 Wean United, Inc. Method and apparatus for treating work rolls in a rolling mill
EP0210847A2 (en) * 1985-07-25 1987-02-04 Kawasaki Steel Corporation Method and apparatus for cooling steel strips
EP0210847A3 (en) * 1985-07-25 1989-05-10 Kawasaki Steel Corporation Method and apparatus for cooling steel strips
US5686043A (en) * 1993-03-25 1997-11-11 Carnaudmetalbox Plc Process and apparatus for producing coated metal

Also Published As

Publication number Publication date
DE1508406B1 (de) 1972-09-07
LU50281A1 (da) 1966-07-18
CH488806A (de) 1970-04-15
DK131476B (da) 1975-07-21
IL24963A (en) 1970-04-20
DK131476C (da) 1976-01-19
BE675282A (da) 1966-07-18

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