WO2019123945A1 - 鋼管の冷却方法および鋼管の冷却装置ならびに鋼管の製造方法 - Google Patents
鋼管の冷却方法および鋼管の冷却装置ならびに鋼管の製造方法 Download PDFInfo
- Publication number
- WO2019123945A1 WO2019123945A1 PCT/JP2018/042808 JP2018042808W WO2019123945A1 WO 2019123945 A1 WO2019123945 A1 WO 2019123945A1 JP 2018042808 W JP2018042808 W JP 2018042808W WO 2019123945 A1 WO2019123945 A1 WO 2019123945A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- steel pipe
- spray nozzle
- disposed
- cooling
- longitudinal direction
- Prior art date
Links
Images
Classifications
-
- 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
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
- C21D9/085—Cooling or quenching
-
- 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
-
- 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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C21D1/667—Quenching devices for spray quenching
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/10—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
-
- 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
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
Definitions
- the present invention relates to a method of cooling a steel pipe, a cooling device for the steel pipe, and a method of manufacturing the steel pipe.
- a steel pipe such as a seamless steel pipe is hardened by heating it to a predetermined heat treatment temperature and then cooling it, or by cooling the high temperature steel pipe after hot rolling as it is, in order to increase the tensile strength and toughness. Is given.
- An object of the present invention is to solve the above-mentioned problems, and to provide a method of cooling a steel pipe capable of conveying the steel pipe at high speed, a cooling device for the steel pipe, and a method of manufacturing the steel pipe.
- a walking arm type rotary transfer device also referred to as a swing arm type transfer device in this specification
- a spray pattern using both the oblique spray nozzle and the flat spray nozzle makes it possible to make the flow distribution of the cooling medium uniform even in the passing range of the walking arm rotary transfer device where the spray nozzle can not be arranged.
- uniform cooling in the direction is possible.
- a step of transporting a steel pipe on a rotary support member using a walking arm type rotary transfer device The first spray is disposed on the upper portion of the steel pipe, wherein the steel pipe rotates about the pipe axis in a state in which movement of the steel pipe in a direction parallel to and perpendicular to the pipe axis of the steel pipe is stopped on the rotary support member.
- Cooling with a nozzle Arranging a plurality of the first spray nozzles in the axial direction of the steel pipe so that an angle formed in the circumferential direction of the steel pipe from the top of the steel pipe is 20 to 70 °;
- the first spray nozzle is disposed excluding the passing range W of the walking arm type rotary transfer device,
- the first spray nozzle in the longitudinal direction of the steel pipe is an oblique spray nozzle disposed obliquely to the passage range W;
- the walking arm type rotary transfer device further includes a second spray nozzle, and the second spray nozzle interferes with the first spray nozzle disposed on the upper portion of the steel pipe and the steel pipe pressing member.
- the position of the rotation support member and / or the position of the first spray nozzle disposed on the upper portion of the steel pipe can be vertically moved according to the outer diameter of the steel pipe [1] to [5] The method for cooling a steel pipe according to any one of the above.
- a walking arm type rotary transfer device for transporting a steel pipe
- a first spray nozzle for cooling the steel pipe rotating on the rotary support member from the upper portion of the steel pipe Arranging a plurality of the first spray nozzles in the axial direction of the steel pipe so that an angle formed in the circumferential direction of the steel pipe from the top of the steel pipe is 20 to 70 °;
- the first spray nozzle is disposed excluding the passing range W of the walking arm type rotary transfer device,
- the first spray nozzle in the longitudinal direction of the steel pipe is an oblique spray nozzle disposed obliquely to the passage range W;
- the steel pipe cooling device which inclines the said oblique type spray nozzle so that it may be 30 degrees or less.
- the steel pipe cooling device according to [8] or [9], further including a steel pipe pressing member for holding a steel pipe rotating on the rotation support member from above the steel pipe in the steel pipe longitudinal direction.
- a second spray nozzle is further provided, and the second spray nozzle cools a range where the first spray nozzle disposed on the upper portion of the steel pipe interferes with the steel pipe pressing member [10].
- Steel pipe cooling system [12] The position of the rotation support member and / or the position of the first spray nozzle disposed on the upper portion of the steel pipe can be vertically moved according to the outer diameter of the steel pipe [7] to [11] The steel pipe cooling device according to any one of the above.
- the steel pipe which is a steel pipe is heated and then cooled, or the high temperature steel pipe after hot rolling is cooled as it is.
- the first spray is disposed on the upper portion of the steel pipe, wherein the steel pipe rotates about the pipe axis in a state in which movement of the steel pipe in a direction parallel to and perpendicular to the pipe axis of the steel pipe is stopped on the rotary support member.
- Cooling with a nozzle Arranging a plurality of the first spray nozzles in the axial direction of the steel pipe so that an angle formed in the circumferential direction of the steel pipe from the top of the steel pipe is 20 to 70 °;
- the first spray nozzle is disposed excluding the passing range W of the walking arm type rotary transfer device,
- the first spray nozzle in the longitudinal direction of the steel pipe is an oblique spray nozzle disposed obliquely to the passage range W;
- the position of the rotation support member and / or the position of the first spray nozzle disposed on the upper portion of the steel pipe can be vertically moved according to the outer diameter of the steel pipe [13] to [17] The manufacturing method of the steel pipe as described in any of.
- FIG. 1 is the schematic diagram which looked at the structure of the cooling device of the steel pipe which concerns on one Embodiment of this invention from the steel pipe axial direction.
- FIG. 2 is a schematic view of the configuration of the cooling system for a steel pipe according to one embodiment of the present invention as viewed from the axial direction of the steel pipe, and is a schematic view where the first spray nozzles are arranged to face each other.
- FIG. 3 is a schematic view showing how cooling water is sprayed from a first spray nozzle at an end of a steel pipe.
- FIG. 4 is a schematic view showing the arrangement (spray pattern) of the first spray nozzle in the longitudinal direction of the steel pipe.
- FIG. 5 is a schematic diagram which shows the mode of the injection water in a diagonal type
- FIG. 6 (a) is a view showing the arrangement of the steel pipe in which warpage occurs and the first spray nozzle
- FIG. 6 (b) is an arrangement where the pitch of the opposing first spray nozzles is shifted. It is a schematic diagram at the time of having.
- FIG. 7 is a schematic view showing the arrangement of a steel pipe pressing member for holding a steel pipe, and FIG. 7 (a) is a side view, and FIG. 7 (b) is a view from the direction of arrow A in FIG. FIG. Fig.
- FIG. 8 is a schematic view showing the arrangement of the steel pipe, the first spray nozzle, the steel pipe pressing member and the second spray nozzle
- Fig. 8 (a) is a side view
- Fig. 8 (b) is a drawing. It is the figure seen from the direction of arrow A of 8 (a).
- FIG. 9 is a schematic view showing the spray range (spread angle) of the spray nozzle.
- Fig.10 (a), (b) is a schematic diagram which shows arrangement
- FIG. 11 is a view showing the results of the spray pattern in the longitudinal direction of the steel pipe and the flow rate distribution of the cooling water in the example of the present invention.
- FIG. 1 is a schematic view of the structure of a cooling system for a steel pipe according to the present invention as viewed from the axial direction of the steel pipe.
- the cooling device for steel pipe according to the present invention rotates and supports the walking arm type rotary transfer device (swing arm type transfer device) 1 for transporting the steel pipe P and the steel pipe P transported by the walking arm type rotary transfer device 1 while rotating.
- a rotation support member 2 and a spray nozzle 3 for cooling a steel pipe P rotating on the rotation support member 2 from above the steel pipe P are provided.
- the arrow shows the conveyance path
- the walking arm type rotary transfer device 1 conveys the high temperature steel pipe P heated in the heat treatment of the previous step or after hot rolling onto the rotary support member 2.
- the rotation support member 2 supports the steel pipe P while rotating it. After the walking arm type rotary transfer device 1 returns to the original position, the steel pipe P is cooled by the cooling water jetted from the spray nozzle 3 at the top of the steel pipe P while rotating on the rotation supporting member 2. After cooling, the steel pipe P is again transported to the next step by the walking arm type rotary transfer device 1.
- the rotation support member 2 may be, for example, a member such as a steel roll which is supported while rotating a steel pipe.
- the steel pipe is transported using the walking arm type rotary transfer device 1.
- conveyance speed is quicker than a kicker system etc.
- high-speed conveyance of a steel pipe is attained.
- transport problems such as occurrence of transport defects and transport defects due to bending of the steel pipe are also eliminated.
- the steel pipe P is cooled while being rotated around the pipe axis in a state where movement of the steel pipe P in a direction parallel to and perpendicular to the pipe axis is stopped at a predetermined position.
- “in a state where the movement of the steel pipe in the direction parallel to and perpendicular to the pipe axis of the steel pipe is stopped” means that when cooling the steel pipe, the steel pipe is actively moved in the pipe axial direction or the vertical direction. It means that you do not move it.
- Vibration of the steel pipe generated by rotating the steel pipe around the pipe axis, and the unavoidable and unintended movement of the steel pipe in the direction of the pipe axis or in the vertical direction that can be generated due to this vibration At a predetermined position, in a state in which the movement in the direction parallel to and perpendicular to the tube axis is stopped.
- the first spray nozzle 3 is disposed so that the angle (angle ⁇ in FIG. 1) formed in the circumferential direction of the steel pipe from the top of the steel pipe P is 20 to 70 °.
- the steel pipe P is transported by the walking arm type rotary transfer device 1
- the steel pipe P is transported through the vicinity of the top of the steel pipe at the vertical line passing through the central axis of the steel pipe P.
- the angle ⁇ is smaller than 20 °, the distance between the transport path of the steel pipe P and the first spray nozzle 3 is short.
- the steel pipe P contacts the spray nozzle 3 and there is a possibility that the first spray nozzle 3 and the steel pipe P may be damaged.
- the angle ⁇ is set to 20 ° or more. If the angle ⁇ is larger than 70 °, the cooling water is likely to scatter around the cooling device, so the cooling water is scattered to the leading steel pipe and the trailing steel pipe, and the leading steel pipe and the trailing steel pipe are cooled. It will In the present invention, the angle ⁇ is preferably 30 ° or more and less than 60 °.
- a plurality of first spray nozzles 3 are arranged in the circumferential direction of the steel pipe.
- the cooling capacity is increased and the cooling time is shortened, so that the productivity can be improved.
- position the 1st spray nozzle 3 in the position made to oppose centering
- FIG. 4 is a schematic view showing the arrangement (spray pattern) of the first spray nozzles 3 (31, 32) in the steel pipe longitudinal direction of the present invention.
- the first spray nozzles 3 are arranged at equal intervals, the first spray nozzles 3 disposed in the range W through which the walking arm rotational transfer device 1 passes collides with the walking arm rotational transfer device 1. For this reason, the first spray nozzle 3 can not be disposed in the passage range W of the walking arm type rotary transfer device 1.
- the first spray nozzle 3 in the longitudinal direction of the steel pipe is disposed excluding the passing range W of the walking arm type rotary transfer device 1. Thereby, the collision of the walking arm type rotary transfer device 1 and the first spray nozzle 3 can be avoided.
- the first spray nozzles 3 in the longitudinal direction of the steel pipe are adjacent to the oblique spray nozzles 31 disposed obliquely to the passage range W and the oblique spray nozzles 31 and equally spaced at a predetermined pitch D. It is set as the flat type
- the steel pipe P can be uniformly cooled.
- the flat spray nozzles 32 may be disposed up to the end of the steel pipe P at equal intervals.
- the oblique spray nozzle 31 is disposed offset from the predetermined pitch D at which the flat spray nozzle 32 is disposed by a distance S, and the distance S and the spray height H of the spray nozzle 3
- the diagonal spray nozzle 31 is non-linearly symmetrical with respect to the nozzle core. That is, inclined at a predetermined angle theta, when injecting the cooling water at a predetermined injection height H 1, using the oblique-type spray nozzle 31 which injection range and water distribution is the same as the flat spray nozzles 32 . Therefore, even if the cooling water is injected in a state where the oblique spray nozzle 31 is inclined toward the passing range W, the water quantity distribution in the longitudinal direction of the steel pipe becomes uniform at the collision position with the steel pipe P. P can be cooled. Note that the injection height H of the flat-type spray nozzle 32, the injection height H 1 of the oblique-type spray nozzle 31 need not be the same height.
- the number of installed oblique spray nozzles 31 is not particularly limited, and may be determined depending on the interference with the adjacent spray nozzles 3 (flat spray nozzles 32) in the longitudinal direction. For example, in the case where the passage range W of the walking arm type rotary transfer device 1 is large and interferes with the first spray nozzle 3 (flat type spray nozzle 32) next to the oblique type spray nozzle 31 when installed.
- the adjacent first spray nozzle 3 is preferably an oblique spray nozzle 31. For example, as shown in FIG.
- the jetting height H of the first spray nozzle 3 is not particularly limited, and may be determined in accordance with the jetting capability of the first spray nozzle 3.
- the first spray nozzles disposed on the upper portion of the steel pipe be disposed to face each other with a shift of D / 4 to 3D / 4 in the longitudinal direction of the steel pipe.
- FIG. 6A shows the arrangement of the steel pipe P and the first spray nozzle 3.
- the steel pipe P can be stably rotated by hold
- the injection height H changes in the circumferential direction and the longitudinal direction according to the amount of warpage.
- the first spray nozzles disposed at the upper portion of the steel pipe may be disposed to face each other with a D / 4 to 3D / 4 pitch offset in the longitudinal direction of the steel pipe. preferable. By doing this, the water density in the longitudinal direction of the steel pipe becomes uniform.
- FIGS. 6A and 6B although the case where a flat type spray nozzle is used as the first spray nozzle is described as an example, an oblique type spray nozzle is used instead of the flat type spray nozzle. It is also possible.
- FIG. 7 is a schematic view showing the arrangement of a steel pipe pressing member for holding a steel pipe
- FIG. 7 (a) is a side view
- FIG. 7 (b) is a view from the direction of arrow A in FIG. FIG.
- the steel pipe pressing member 4 for example, a steel roll or the like may be used as long as the steel pipe P can be pressed even when the steel pipe P is rotating.
- the steel pipe P may be further cooled using the second spray nozzle 5 preferable.
- the water density of the second spray nozzle 5 is the same as that of the first spray nozzle 3.
- the second spray nozzle 5 only needs to be capable of cooling the range where the first spray nozzle 3 and the steel pipe pressing member 4 interfere with each other. Therefore, the arrangement of the second spray nozzle 5 is not particularly limited, but it may be arranged at a position not interfering with the first spray nozzle 3 (a position not interfering with the cooling of the steel pipe P by the first spray nozzle 3). preferable.
- FIG. 8 (a) is a side view of the arrangement of the steel pipe P, the first spray nozzle 3, the steel pipe pressing member 4 and the second spray nozzle 5, and FIG. 8 (b) is a cross sectional view of FIG. It is the figure (figure seen from the top) seen from the direction of arrow A of.
- the arrangement of the second spray nozzle 5 for example, as shown by the symbol 5 represented only by the solid line in FIG. 8A in FIG. 8B, it opposes the steel pipe pressing member 4 with the steel pipe P interposed.
- the second spray nozzle 5 may be installed in the area.
- the second spray nozzle 5 is disposed at a portion of the steel pipe pressing member 4 opposed to the steel pipe P as shown by a solid line and a broken line in FIG. 8A and a code 5 ′ represented by a broken line in FIG. You may install it.
- the spray angle of the spray nozzle 3 is preferably 45 ° or less (FIG. 9). Even if it is larger than 45 °, the construction cost and the running cost are only increased because the coolant water is injected which hardly contributes to the cooling capacity.
- the position of the rotation support member 2 and / or the position of the first spray nozzle 3 disposed at the upper portion of the steel pipe be vertically movable according to the outer diameter of the steel pipe P.
- Fig.10 (a) when cooling steel pipe P 'whose outside diameter is larger than steel pipe P, injection height H' of steel pipe P 'becomes shorter than injection height H of steel pipe P. .
- the flow rate distribution of the cooling water in the longitudinal direction of the steel pipe may be deteriorated, and a portion where the cooling water is not injected may be generated. For this reason, as shown in FIG.
- the steel pipe P and / or the first steel pipe P and / or the second steel pipe P are made to be substantially the same regardless of the outer diameter of the steel pipe P. It is preferable that the position (height) of one spray nozzle 3 is vertically movable according to the outer diameter of the steel pipe P. In this case, since the flow rate distribution in the longitudinal direction of the steel pipe becomes uniform, the steel pipe P is uniformly cooled even when the steel pipes P having different outer diameters are cooled. Therefore, desired mechanical properties are obtained.
- the movement of the rotation support member 2 and the first spray nozzle 3 in the vertical direction may be performed using, for example, an elevating mechanism.
- the manufacturing conditions of the steel pipe With regard to the manufacturing conditions of the steel pipe, the above-described book described so-called reheat-quenching treatment for cooling a steel pipe which is a plain pipe after heating or so-called direct hardening treatment for cooling a high temperature steel pipe after hot rolling as it is It may be carried out by the cooling method (cooling device) of the invention. Therefore, the manufacturing conditions other than the quenching treatment are not particularly limited, and may be performed according to a conventional method.
- the flow rate variation of the cooling water in the longitudinal direction of the steel pipe was examined using the cooling device of the present invention. Specifically, the amount density of the cooling water at each position in the longitudinal direction of the steel pipe was examined, and the flow rate variation (flow rate distribution) of the cooling water in the longitudinal direction of the steel pipe was examined.
- the spray range of the spray nozzle in the longitudinal direction of the steel pipe was divided into 25 mm pitch, and the water density of the cooling water jetted from the spray nozzle in each divided area was calculated. Moreover, about the flow volume variation, the difference of the maximum value and the minimum value of the water volume density of each area was made into the parameter
- the injection angle ⁇ in the circumferential direction of the steel pipe was 45 ° from the top of the steel pipe (the cooling device in FIG. 1).
- the square spray nozzle was arranged to be inclined toward the passage range W.
- the oblique spray nozzle of the cooling device of the present invention was replaced with a flat spray nozzle.
- the conveyance is performed by a kicker system, and provided with a large number of flat spray nozzles arranged at equal intervals in the longitudinal direction at a position 45 ° from the top of the steel pipe and a rotation support member for rotatably supporting the steel pipe. It was a cooling device.
- the amount of cooling water jetted from the flat type spray nozzle and the oblique type spray nozzle was 50 L / min per spray nozzle.
- the steel pipes used as the invention example, the comparative example and the conventional example all have an outer diameter of 172 mm and a thickness of 10 mm.
- FIG. 11 is a view showing spray patterns in the longitudinal direction of the steel pipe and flow rate distribution of cooling water (water density at respective positions in the longitudinal direction of the steel pipe) in the invention example, the comparative example and the conventional example.
- a water density of 1.5 m 3 / (m 2 ⁇ min) or more could be realized even in the passing range of the walking arm type rotary transfer device.
- the flow rate variation in the longitudinal direction of the steel pipe could be made 0.8 m 3 / (m 2 ⁇ min) or less.
- the water mass density of 1.5 m 3 / (m 2 ⁇ min) or more and the flow rate variation in the longitudinal direction of the steel pipe were 0.8 m 3 / (m 2 ⁇ min) or less.
- the cooling device of the present invention can shorten the cycle time of the cooling process by 6 seconds as compared with the kicker method which is the conventional example.
- the first spray nozzle 3 was disposed to face the steel pipe in the longitudinal direction, thereby cooling the steel pipe.
- the conditions of the cooling device except that the cooling device of FIG. 2 is used are the same as those of the invention example of the first embodiment.
- the steel pipe P had an outer diameter of 110 mm and a thickness of 10 mm, and was cooled to 800 ° C. to 100 ° C.
- the cycle time of the cooling process is 16 seconds as compared with the kicker method which is the conventional example. I could shorten it.
- the nozzle pitch of the first spray nozzle 3 opposed to each other with the longitudinal direction of the steel pipe as a center is shifted by D / 2 pitch, and the steel pipe P is cooled.
- the conditions of the cooling device other than the nozzle pitch of the first spray nozzle 3 are the same as in the second embodiment.
- a steel pipe (outer diameter 110 mm, wall thickness 10 mm) in which a difference of 20 mm between the center part and the end part in the longitudinal direction of the steel pipe was visually observed was cooled from 800 ° C to 100 ° C.
- the steel pipe P was cooled using the cooling device in which the steel pipe pressing member 4 was installed.
- the conditions of the cooling device other than the steel pipe pressing member 4 are the same as in the third embodiment.
- a steel pipe (outer diameter 110 mm, thickness 10 mm) in which a difference of 50 mm between the center part and the end part in the longitudinal direction of the steel pipe was visually observed was cooled from 800 ° C to 100 ° C. As a result, it was possible to stably rotate and cool the steel pipe P in which large warpage had occurred before cooling without popping out.
- the elevating mechanism was installed on the rotary support member 2.
- the rotary support member 2 was lowered by 90 mm in advance to cool the steel pipe P so that the injection height H was 400 mm.
- the conditions are the same as those of the fifth embodiment except that the elevating mechanism is provided on the rotation support member 2.
Landscapes
- 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)
- Manufacturing & Machinery (AREA)
- Heat Treatment Of Articles (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
Description
[1]ウォーキングアーム式回転移送装置を用いて、回転支持部材上に鋼管を搬送する工程と、
前記回転支持部材上で、鋼管の管軸に平行な方向および垂直な方向への鋼管の移動を停止した状態で前記管軸を中心として回転する鋼管を、鋼管上部に配置される第一のスプレーノズルにより冷却する工程とを有し、
前記第一のスプレーノズルを、鋼管天頂部から鋼管円周方向になす角度が20~70°となるように、鋼管軸方向に複数配置し、
前記第一のスプレーノズルはウォーキングアーム式回転移送装置の通過範囲Wを除いて配置され、
鋼管長手方向における前記第一のスプレーノズルは、前記通過範囲Wに向けて傾斜させて配置する斜方型スプレーノズルと、
前記斜方型スプレーノズルに隣接し、鋼管長手方向において、所定のピッチDで等間隔に配置するフラット型スプレーノズルとを備え、
前記斜方型スプレーノズルは前記所定のピッチDから距離Sだけずらして配置され、かつ前記距離Sと前記第一のスプレーノズルの噴射高さHとから求められる角度θ(θ=arctan(S/H))が30°以下となるように前記斜方型スプレーノズルを傾斜させる鋼管の冷却方法。
[2]前記鋼管上部に配置される第一のスプレーノズルを、鋼管長手方向を中心として対向させて配置する[1]に記載の鋼管の冷却方法。
[3]前記鋼管上部に配置される第一のスプレーノズルを、鋼管長手方向にD/4~3D/4ピッチずらして対向させて配置する[2]に記載の鋼管の冷却方法。
[4]前記ウォーキングアーム式回転移送装置が、前記回転支持部材上で回転する鋼管を鋼管上部から押さえる鋼管押さえ部材をさらに備える[2]または[3]に記載の鋼管の冷却方法。
[5]前記ウォーキングアーム式回転移送装置が、さらに第二のスプレーノズルを備え、前記第二のスプレーノズルは、前記鋼管上部に配置される第一のスプレーノズルと前記鋼管押さえ部材とが干渉する範囲を冷却する[4]に記載の鋼管の冷却方法。
[6]前記回転支持部材の位置および/または前記鋼管上部に配置される第一のスプレーノズルの位置が、前記鋼管の外径に応じて上下方向に移動可能である[1]~[5]のいずれかに記載の鋼管の冷却方法。
[7]鋼管を搬送するウォーキングアーム式回転移送装置と、
前記ウォーキングアーム式回転移送装置により搬送される鋼管を、鋼管の管軸に平行な方向および垂直な方向への鋼管の移動を停止した状態で前記管軸を中心として回転させながら支持する回転支持部材と、
前記回転支持部材上で回転する鋼管を、鋼管上部から冷却する第一のスプレーノズルとを備え、
前記第一のスプレーノズルを、鋼管天頂部から鋼管円周方向になす角度が20~70°となるように、鋼管軸方向に複数配置し、
前記第一のスプレーノズルはウォーキングアーム式回転移送装置の通過範囲Wを除いて配置され、
鋼管長手方向における前記第一のスプレーノズルは、前記通過範囲Wに向けて傾斜させて配置する斜方型スプレーノズルと、
前記斜方型スプレーノズルに隣接し、鋼管長手方向において、所定のピッチDで等間隔に配置するフラット型スプレーノズルとを備え、
前記斜方型スプレーノズルは前記所定のピッチDから距離Sだけずらして配置され、かつ前記距離Sと前記第一のスプレーノズルの噴射高さHとから求められる角度θ(θ=arctan(S/H))が30°以下となるように前記斜方型スプレーノズルを傾斜させる鋼管の冷却装置。
[8]前記鋼管上部に配置される第一のスプレーノズルを、鋼管長手方向を中心として対向させて配置する[7]に記載の鋼管の冷却装置。
[9]前記鋼管上部に配置される第一のスプレーノズルを、鋼管長手方向にD/4~3D/4ピッチずらして対向させて配置する[8]に記載の鋼管の冷却装置。
[10]鋼管長手方向において、前記回転支持部材上で回転する鋼管を鋼管上部から押さえる鋼管押さえ部材をさらに備える[8]または[9]に記載の鋼管の冷却装置。
[11]さらに第二のスプレーノズルを備え、前記第二のスプレーノズルは、前記鋼管上部に配置される第一のスプレーノズルと前記鋼管押さえ部材とが干渉する範囲を冷却する[10]に記載の鋼管の冷却装置。
[12]前記回転支持部材の位置および/または前記鋼管上部に配置される第一のスプレーノズルの位置が、前記鋼管の外径に応じて上下方向に移動可能である[7]~[11]のいずれかに記載の鋼管の冷却装置。
[13]素管である鋼管を加熱後に冷却する、あるいは、熱間圧延後の高温の鋼管をそのまま冷却する、焼入れ処理を施す鋼管の製造方法において、前記焼入れ処理の冷却は、
ウォーキングアーム式回転移送装置を用いて、回転支持部材上に鋼管を搬送する工程と、
前記回転支持部材上で、鋼管の管軸に平行な方向および垂直な方向への鋼管の移動を停止した状態で前記管軸を中心として回転する鋼管を、鋼管上部に配置される第一のスプレーノズルにより冷却する工程とを有し、
前記第一のスプレーノズルを、鋼管天頂部から鋼管円周方向になす角度が20~70°となるように、鋼管軸方向に複数配置し、
前記第一のスプレーノズルはウォーキングアーム式回転移送装置の通過範囲Wを除いて配置され、
鋼管長手方向における前記第一のスプレーノズルは、前記通過範囲Wに向けて傾斜させて配置する斜方型スプレーノズルと、
前記斜方型スプレーノズルに隣接し、鋼管長手方向において、所定のピッチDで等間隔に配置するフラット型スプレーノズルとを備え、
前記斜方型スプレーノズルは前記所定のピッチDから距離Sだけずらして配置され、かつ前記距離Sと前記第一のスプレーノズルの噴射高さHとから求められる角度θ(θ=arctan(S/H))が30°以下となるように前記斜方型スプレーノズルを傾斜させる鋼管の製造方法。
[14]前記鋼管上部に配置される第一のスプレーノズルを、鋼管長手方向を中心として対向させて配置する[13]に記載の鋼管の製造方法。
[15]前記鋼管上部に配置される第一のスプレーノズルを、鋼管長手方向を中心としてD/4~3D/4ピッチずらして対向させて配置する[14]に記載の鋼管の製造方法。
[16]前記ウォーキングアーム式回転移送装置が、前記回転支持部材上で回転する鋼管を鋼管上部から押さえる鋼管押さえ部材をさらに備える[14]または[15]に記載の鋼管の製造方法。
[17]前記ウォーキングアーム式回転移送装置が、さらに第二のスプレーノズルを備え、前記第二のスプレーノズルは、前記鋼管上部に配置される第一のスプレーノズルと前記鋼管押さえ部材とが干渉する範囲を冷却する[16]に記載の鋼管の製造方法。
[18]前記回転支持部材の位置および/または前記鋼管上部に配置される第一のスプレーノズルの位置が、前記鋼管の外径に応じて上下方向に移動可能である[13]~[17]のいずれかに記載の鋼管の製造方法。
2 回転支持部材
3 第一のスプレーノズル
31 斜方型スプレーノズル
32 フラット型スプレーノズル
4 鋼管押さえ部材
5 第二のスプレーノズル
5´ 第二のスプレーノズル
P 鋼管
W 通過範囲
D ピッチ
S(S1、S2) ずらした距離
H(H1、H2) 噴射高さ
H´ 噴射高さ
Claims (18)
- ウォーキングアーム式回転移送装置を用いて、回転支持部材上に鋼管を搬送する工程と、
前記回転支持部材上で、鋼管の管軸に平行な方向および垂直な方向への鋼管の移動を停止した状態で前記管軸を中心として回転する鋼管を、鋼管上部に配置される第一のスプレーノズルにより冷却する工程とを有し、
前記第一のスプレーノズルを、鋼管天頂部から鋼管円周方向になす角度が20~70°となるように、鋼管軸方向に複数配置し、
前記第一のスプレーノズルはウォーキングアーム式回転移送装置の通過範囲Wを除いて配置され、
鋼管長手方向における前記第一のスプレーノズルは、前記通過範囲Wに向けて傾斜させて配置する斜方型スプレーノズルと、
前記斜方型スプレーノズルに隣接し、鋼管長手方向において、所定のピッチDで等間隔に配置するフラット型スプレーノズルとを備え、
前記斜方型スプレーノズルは前記所定のピッチDから距離Sだけずらして配置され、かつ前記距離Sと前記第一のスプレーノズルの噴射高さHとから求められる角度θ(θ=arctan(S/H))が30°以下となるように前記斜方型スプレーノズルを傾斜させる鋼管の冷却方法。 - 前記鋼管上部に配置される第一のスプレーノズルを、鋼管長手方向を中心として対向させて配置する請求項1に記載の鋼管の冷却方法。
- 前記鋼管上部に配置される第一のスプレーノズルを、鋼管長手方向にD/4~3D/4ピッチずらして対向させて配置する請求項2に記載の鋼管の冷却方法。
- 前記ウォーキングアーム式回転移送装置が、前記回転支持部材上で回転する鋼管を鋼管上部から押さえる鋼管押さえ部材をさらに備える請求項2または3に記載の鋼管の冷却方法。
- 前記ウォーキングアーム式回転移送装置が、さらに第二のスプレーノズルを備え、前記第二のスプレーノズルは、前記鋼管上部に配置される第一のスプレーノズルと前記鋼管押さえ部材とが干渉する範囲を冷却する請求項4に記載の鋼管の冷却方法。
- 前記回転支持部材の位置および/または前記鋼管上部に配置される第一のスプレーノズルの位置が、前記鋼管の外径に応じて上下方向に移動可能である請求項1~5のいずれかに記載の鋼管の冷却方法。
- 鋼管を搬送するウォーキングアーム式回転移送装置と、
前記ウォーキングアーム式回転移送装置により搬送される鋼管を、鋼管の管軸に平行な方向および垂直な方向への鋼管の移動を停止した状態で前記管軸を中心として回転させながら支持する回転支持部材と、
前記回転支持部材上で回転する鋼管を、鋼管上部から冷却する第一のスプレーノズルとを備え、
前記第一のスプレーノズルを、鋼管天頂部から鋼管円周方向になす角度が20~70°となるように、鋼管軸方向に複数配置し、
前記第一のスプレーノズルはウォーキングアーム式回転移送装置の通過範囲Wを除いて配置され、
鋼管長手方向における前記第一のスプレーノズルは、前記通過範囲Wに向けて傾斜させて配置する斜方型スプレーノズルと、
前記斜方型スプレーノズルに隣接し、鋼管長手方向において、所定のピッチDで等間隔に配置するフラット型スプレーノズルとを備え、
前記斜方型スプレーノズルは前記所定のピッチDから距離Sだけずらして配置され、かつ前記距離Sと前記第一のスプレーノズルの噴射高さHとから求められる角度θ(θ=arctan(S/H))が30°以下となるように前記斜方型スプレーノズルを傾斜させる鋼管の冷却装置。 - 前記鋼管上部に配置される第一のスプレーノズルを、鋼管長手方向を中心として対向させて配置する請求項7に記載の鋼管の冷却装置。
- 前記鋼管上部に配置される第一のスプレーノズルを、鋼管長手方向にD/4~3D/4ピッチずらして対向させて配置する請求項8に記載の鋼管の冷却装置。
- 鋼管長手方向において、前記回転支持部材上で回転する鋼管を鋼管上部から押さえる鋼管押さえ部材をさらに備える請求項8または9に記載の鋼管の冷却装置。
- さらに第二のスプレーノズルを備え、前記第二のスプレーノズルは、前記鋼管上部に配置される第一のスプレーノズルと前記鋼管押さえ部材とが干渉する範囲を冷却する請求項10に記載の鋼管の冷却装置。
- 前記回転支持部材の位置および/または前記鋼管上部に配置される第一のスプレーノズルの位置が、前記鋼管の外径に応じて上下方向に移動可能である請求項7~11のいずれかに記載の鋼管の冷却装置。
- 素管である鋼管を加熱後に冷却する、あるいは、熱間圧延後の高温の鋼管をそのまま冷却する、焼入れ処理を施す鋼管の製造方法において、前記焼入れ処理の冷却は、
ウォーキングアーム式回転移送装置を用いて、回転支持部材上に鋼管を搬送する工程と、
前記回転支持部材上で、鋼管の管軸に平行な方向および垂直な方向への鋼管の移動を停止した状態で前記管軸を中心として回転する鋼管を、鋼管上部に配置される第一のスプレーノズルにより冷却する工程とを有し、
前記第一のスプレーノズルを、鋼管天頂部から鋼管円周方向になす角度が20~70°となるように、鋼管軸方向に複数配置し、
前記第一のスプレーノズルはウォーキングアーム式回転移送装置の通過範囲Wを除いて配置され、
鋼管長手方向における前記第一のスプレーノズルは、前記通過範囲Wに向けて傾斜させて配置する斜方型スプレーノズルと、
前記斜方型スプレーノズルに隣接し、鋼管長手方向において、所定のピッチDで等間隔に配置するフラット型スプレーノズルとを備え、
前記斜方型スプレーノズルは前記所定のピッチDから距離Sだけずらして配置され、かつ前記距離Sと前記第一のスプレーノズルの噴射高さHとから求められる角度θ(θ=arctan(S/H))が30°以下となるように前記斜方型スプレーノズルを傾斜させる鋼管の製造方法。 - 前記鋼管上部に配置される第一のスプレーノズルを、鋼管長手方向を中心として対向させて配置する請求項13に記載の鋼管の製造方法。
- 前記鋼管上部に配置される第一のスプレーノズルを、鋼管長手方向を中心としてD/4~3D/4ピッチずらして対向させて配置する請求項14に記載の鋼管の製造方法。
- 前記ウォーキングアーム式回転移送装置が、前記回転支持部材上で回転する鋼管を鋼管上部から押さえる鋼管押さえ部材をさらに備える請求項14または15に記載の鋼管の製造方法。
- 前記ウォーキングアーム式回転移送装置が、さらに第二のスプレーノズルを備え、前記第二のスプレーノズルは、前記鋼管上部に配置される第一のスプレーノズルと前記鋼管押さえ部材とが干渉する範囲を冷却する請求項16に記載の鋼管の製造方法。
- 前記回転支持部材の位置および/または前記鋼管上部に配置される第一のスプレーノズルの位置が、前記鋼管の外径に応じて上下方向に移動可能である請求項13~17のいずれかに記載の鋼管の製造方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MX2020006464A MX2020006464A (es) | 2017-12-19 | 2018-11-20 | Metodo para el templado de tubo de acero, equipo para el templado de tubo de acero, y metodo de fabricacion de tubo de acero. |
BR112020011970-9A BR112020011970B1 (pt) | 2017-12-19 | 2018-11-20 | Método para têmpera de tubo de aço, equipamento para têmpera de tubo de aço, e método de fabricação de tubo de aço |
US16/954,273 US11441203B2 (en) | 2017-12-19 | 2018-11-20 | Method for quenching steel pipe, equipment for quenching steel pipe, and method for manufacturing steel pipe |
JP2019524291A JP6628008B2 (ja) | 2017-12-19 | 2018-11-20 | 鋼管の冷却方法および鋼管の冷却装置ならびに鋼管の製造方法 |
EP18891270.3A EP3680354B1 (en) | 2017-12-19 | 2018-11-20 | Method for quenching steel pipe, device for quenching steel pipe, and method of manufacturing steel pipe |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017-242348 | 2017-12-19 | ||
JP2017242348 | 2017-12-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2019123945A1 true WO2019123945A1 (ja) | 2019-06-27 |
Family
ID=66994649
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2018/042808 WO2019123945A1 (ja) | 2017-12-19 | 2018-11-20 | 鋼管の冷却方法および鋼管の冷却装置ならびに鋼管の製造方法 |
Country Status (7)
Country | Link |
---|---|
US (1) | US11441203B2 (ja) |
EP (1) | EP3680354B1 (ja) |
JP (1) | JP6628008B2 (ja) |
AR (1) | AR113644A1 (ja) |
BR (1) | BR112020011970B1 (ja) |
MX (1) | MX2020006464A (ja) |
WO (1) | WO2019123945A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019205724A1 (de) | 2019-04-18 | 2020-10-22 | Sms Group Gmbh | Kühlvorrichtung für nahtlose Stahlrohre |
CN111774424B (zh) * | 2020-06-23 | 2022-04-08 | 江苏联峰实业有限公司 | 一种螺纹钢控冷轧制工艺 |
CN113564328A (zh) * | 2021-08-26 | 2021-10-29 | 华能国际电力股份有限公司 | 一种在线式钢管喷淋淬火装置 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5923819A (ja) * | 1982-07-30 | 1984-02-07 | Kawasaki Steel Corp | 管材の冷却方法 |
US4834344A (en) * | 1987-02-20 | 1989-05-30 | Surface Combustion, Inc. | Apparatus for inside-outside tube quenching |
JPH03207817A (ja) | 1990-01-08 | 1991-09-11 | Nkk Corp | 鋼管用スプレイ冷却装置 |
JPH07268479A (ja) * | 1994-03-31 | 1995-10-17 | Mitsubishi Heavy Ind Ltd | 管焼入装置 |
JPH08333636A (ja) * | 1995-06-06 | 1996-12-17 | Sumitomo Metal Ind Ltd | 長尺鋼管の冷却方法および焼入装置 |
JPH09225520A (ja) * | 1996-02-21 | 1997-09-02 | Nippon Steel Corp | 熱間圧延鋼板の冷却方法および装置並びに脆性亀裂伝播停止特性に優れた鋼板の製造方法 |
JP2009243579A (ja) * | 2008-03-31 | 2009-10-22 | Jfe Steel Corp | 回転装置の固定装置およびその固定方法 |
WO2016125425A1 (ja) * | 2015-02-06 | 2016-08-11 | Jfeスチール株式会社 | 鋼管の焼入れ方法、鋼管の焼入れ装置、鋼管の製造方法および鋼管の製造設備 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56166325A (en) | 1980-05-23 | 1981-12-21 | Nippon Steel Corp | Conveyor for steel pipe |
JPS5887226A (ja) * | 1981-11-18 | 1983-05-25 | Nippon Steel Corp | 鋼管の冷却方法及びその装置 |
AU559731B2 (en) * | 1981-11-19 | 1987-03-19 | Kawasaki Steel Corp. | Continuously quenching steel plates |
JPS60245719A (ja) | 1984-05-19 | 1985-12-05 | Kawasaki Steel Corp | 円形断面長尺鋼材の冷却方法および装置 |
JPH07288479A (ja) | 1994-04-18 | 1995-10-31 | Nec Corp | 誤り訂正連接符号化方法及び装置 |
JP5923819B2 (ja) | 2011-12-28 | 2016-05-25 | 国立大学法人東京工業大学 | シリンダ装置およびそれを用いた投擲装置 |
TW201720936A (zh) | 2015-12-08 | 2017-06-16 | 財團法人金屬工業研究發展中心 | 冷卻裝置 |
-
2018
- 2018-11-20 JP JP2019524291A patent/JP6628008B2/ja active Active
- 2018-11-20 US US16/954,273 patent/US11441203B2/en active Active
- 2018-11-20 WO PCT/JP2018/042808 patent/WO2019123945A1/ja unknown
- 2018-11-20 EP EP18891270.3A patent/EP3680354B1/en active Active
- 2018-11-20 MX MX2020006464A patent/MX2020006464A/es unknown
- 2018-11-20 BR BR112020011970-9A patent/BR112020011970B1/pt active IP Right Grant
- 2018-12-18 AR ARP180103689A patent/AR113644A1/es active IP Right Grant
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5923819A (ja) * | 1982-07-30 | 1984-02-07 | Kawasaki Steel Corp | 管材の冷却方法 |
US4834344A (en) * | 1987-02-20 | 1989-05-30 | Surface Combustion, Inc. | Apparatus for inside-outside tube quenching |
JPH03207817A (ja) | 1990-01-08 | 1991-09-11 | Nkk Corp | 鋼管用スプレイ冷却装置 |
JPH07268479A (ja) * | 1994-03-31 | 1995-10-17 | Mitsubishi Heavy Ind Ltd | 管焼入装置 |
JPH08333636A (ja) * | 1995-06-06 | 1996-12-17 | Sumitomo Metal Ind Ltd | 長尺鋼管の冷却方法および焼入装置 |
JPH09225520A (ja) * | 1996-02-21 | 1997-09-02 | Nippon Steel Corp | 熱間圧延鋼板の冷却方法および装置並びに脆性亀裂伝播停止特性に優れた鋼板の製造方法 |
JP2009243579A (ja) * | 2008-03-31 | 2009-10-22 | Jfe Steel Corp | 回転装置の固定装置およびその固定方法 |
WO2016125425A1 (ja) * | 2015-02-06 | 2016-08-11 | Jfeスチール株式会社 | 鋼管の焼入れ方法、鋼管の焼入れ装置、鋼管の製造方法および鋼管の製造設備 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3680354A4 |
Also Published As
Publication number | Publication date |
---|---|
US11441203B2 (en) | 2022-09-13 |
EP3680354A4 (en) | 2020-08-05 |
JP6628008B2 (ja) | 2020-01-08 |
EP3680354A1 (en) | 2020-07-15 |
BR112020011970B1 (pt) | 2023-09-26 |
EP3680354B1 (en) | 2022-03-09 |
AR113644A1 (es) | 2020-05-27 |
US20210087643A1 (en) | 2021-03-25 |
MX2020006464A (es) | 2020-09-22 |
JPWO2019123945A1 (ja) | 2019-12-26 |
BR112020011970A2 (pt) | 2020-11-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2019123945A1 (ja) | 鋼管の冷却方法および鋼管の冷却装置ならびに鋼管の製造方法 | |
JP6624113B2 (ja) | 急冷焼入れ装置 | |
US10422014B2 (en) | Heat-treatment device and heat-treatment method | |
JP4905051B2 (ja) | 鋼板の冷却設備および冷却方法 | |
JP6098773B2 (ja) | 鋼管の焼入れ方法、鋼管の焼入れ装置、鋼管の製造方法および鋼管の製造設備 | |
WO2020261547A1 (ja) | 鋼材の冷却装置及びこの冷却装置を使用した鋼材冷却設備 | |
JP5742550B2 (ja) | 連続鋳造による鋳片の製造方法および製造装置 | |
JP2008261018A (ja) | 鋼管の冷却方法及び冷却装置 | |
TW201718879A (zh) | 金屬材熱處理方法 | |
JP7314989B2 (ja) | 焼入れ装置及び金属板の製造方法 | |
JPH0137452B2 (ja) | ||
KR102382658B1 (ko) | 금속판의 냉각 장치 및 금속판의 연속 열처리 설비 | |
JP7381840B2 (ja) | H形鋼の冷却装置 | |
JP2011006771A (ja) | 棒鋼移動焼入れ時の焼割れ防止冷却方法 | |
JP2013129886A (ja) | 鋼材の冷却設備および冷却方法 | |
JP2005238252A (ja) | H形鋼の冷却方法及び冷却装置 | |
JPS60245719A (ja) | 円形断面長尺鋼材の冷却方法および装置 | |
US20220316018A1 (en) | Cooling jacket and quenching apparatus | |
JP6583328B2 (ja) | 鋼管の焼入れ装置および焼入れ方法、ならびに、鋼管の製造装置および製造方法 | |
KR101289181B1 (ko) | 선재코일 냉각장치 | |
WO2015064375A1 (ja) | 連続鋳造機の菱形変形防止装置 | |
KR20110022310A (ko) | 열연판재의 냉각장치 | |
JP2010229547A (ja) | 連続加熱冷却装置 | |
JP2010284680A (ja) | 厚鋼板の冷却設備およびその冷却方法 | |
JPH06122925A (ja) | 歯車の焼入方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ENP | Entry into the national phase |
Ref document number: 2019524291 Country of ref document: JP Kind code of ref document: A |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 18891270 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2018891270 Country of ref document: EP Effective date: 20200408 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112020011970 Country of ref document: BR |
|
ENP | Entry into the national phase |
Ref document number: 112020011970 Country of ref document: BR Kind code of ref document: A2 Effective date: 20200615 |