Quenching machine and quenching production line

Abstract

The utility model belongs to the technical field of metal quenching, and discloses a quenching machine and a quenching production line, and the quenching machine comprises a spraying mechanism and a straightening mechanism which are sequentially arranged in the first direction; the spraying mechanism comprises an upper spraying unit and a lower spraying unit which are oppositely arranged, the upper spraying unit and the lower spraying unit extend in the first direction, and the upper spraying unit is used for spraying fluid to a product so as to cool the product; the lower spraying unit is used for spraying the fluid to the product so as to support and cool the product; and the spraying direction of the upper spraying unit and / or the lower spraying unit is inclined towards one side close to the straightening mechanism, so that the product is pushed to the straightening mechanism along the first direction. The quenching machine and the quenching production line can solve the technical problem that the conveying rollers affect cooling of the steel plate during quenching of the steel plate.

Description

Technical Field

[0001] This application belongs to the technical field of metal quenching, and particularly relates to a quenching machine and a quenching production line. Background Art

[0002] Steel quenching is to heat the steel through a quenching furnace and then use a quenching machine to cool the steel, causing a phase change in the steel. When quenching thin-gauge steel plates, the cooling rate is fast. Since the conveying rollers below the steel plates affect the cooling of the steel plates, the cooling of different positions on the upper and lower surfaces of the steel plates is uneven. The structures and properties of the steel plates after phase change at different positions are different, which affects the subsequent processes and increases the risk of product unqualified. Summary of the Utility Model

[0003] The purpose of the embodiments of this application is to provide a quenching machine and a quenching production line to solve the technical problem that the conveying rollers affect the cooling of steel plates in the prior art.

[0004] To achieve the above purpose, in the first aspect, the embodiments of this application provide a quenching machine, including a spraying mechanism and a straightening mechanism arranged in sequence along a first direction; the spraying mechanism includes an upper spraying unit and a lower spraying unit arranged opposite to each other, both the upper spraying unit and the lower spraying unit extend along the first direction, the upper spraying unit is used to spray fluid onto the product to cool the product; the lower spraying unit is used to spray the fluid onto the product to support and cool the product; the spraying directions of the upper spraying unit and / or the lower spraying unit are inclined towards the side close to the straightening mechanism to push the product along the first direction to the straightening mechanism.

[0005] In some embodiments, the included angle between the spraying direction of the upper spraying unit and / or the lower spraying unit and the first direction is 36° - 45°.

[0006] In some embodiments, the upper spraying unit and the lower spraying unit are respectively arranged on both sides of the product along a second direction; both the upper spraying unit and the lower spraying unit include a plurality of first spraying components and a plurality of second spraying components distributed along the first direction; the first spraying components are used to cool the middle part of the product along a third direction; the first direction, the second direction, and the third direction are perpendicular to each other; a plurality of the second spraying components are respectively arranged on both sides of the first spraying components along the third direction to cool the two ends of the product along the third direction; the distance between adjacent second spraying components in the first direction is greater than the distance between adjacent first spraying components, so that the cooling rate of the middle part of the product by the fluid is faster than that of the two ends.

[0007] In some embodiments, both the first spraying component and the second spraying component include air curtain nozzles; the spraying mechanism further includes a plurality of supplementary nozzles distributed along the first direction, and the supplementary nozzles are arranged between the first spraying component and the second spraying component to cool the product in the area between the first spraying component and the second spraying component; the included angle between the spraying direction of the supplementary nozzles and the first direction is 36°-45°.

[0008] In some embodiments, the straightening mechanism includes a squeezing roll group and a plurality of first straightening roll groups arranged in sequence along the first direction; the squeezing roll group includes a plurality of upper squeezing rolls and a plurality of lower squeezing rolls, the diameters of the upper squeezing rolls and the lower squeezing rolls are equal, and the upper squeezing rolls and the lower squeezing rolls are arranged alternately along the first direction; the first straightening roll group includes a first upper roll and a first lower roll arranged oppositely.

[0009] In some embodiments, the straightening mechanism further includes a plurality of second straightening roll groups distributed along the first direction, and the second straightening roll groups are arranged on the side of the first straightening roll group away from the squeezing roll group; the second straightening roll group includes a second upper roll and a second lower roll arranged oppositely, and the diameters of the second upper roll, the first upper roll, and the upper squeezing roll increase in sequence.

[0010] In some embodiments, the straightening mechanism further includes a plurality of pressure members, a plurality of upper pressing members, and a plurality of lower pressing members; the pressure members are used to provide bending roll force to make the upper squeezing rolls, the lower squeezing rolls, the first upper roll, and the first lower roll bend positively; each of the upper pressing members respectively presses against the tops of the upper squeezing rolls, the first upper roll, and the second upper roll; each of the lower pressing members respectively presses against the bottoms of the lower squeezing rolls, the first lower roll, and the second lower roll.

[0011] In some embodiments, the quenching machine further includes a plurality of third spraying components, and each of the third spraying components is respectively arranged between adjacent upper squeezing rolls, between adjacent lower squeezing rolls, between adjacent first straightening roll groups, and between adjacent second straightening roll groups; the third spraying components are used to spray the fluid onto the product, the upper squeezing rolls, the lower squeezing rolls, the first straightening roll groups, and the second straightening roll groups.

[0012] In a second aspect, an embodiment of the present application provides a quenching production line, which includes a quenching furnace and a quenching machine distributed in sequence along the first direction, and further includes a conveying mechanism arranged between the quenching furnace and the quenching machine; the quenching machine is the quenching machine according to any one of the embodiments in the first aspect; the conveying mechanism is used to convey the product along the first direction.

[0013] In some embodiments, the quenching production line further includes a controller, a product detection device, and a flatness detection device. The product detection device is disposed between the quenching furnace and the quenching machine, and is configured to detect product parameters. The controller is configured to control the process parameters of the spraying mechanism according to the product parameters, and the process parameters include at least one of spraying pressure and spraying flow rate. The flatness detection device is disposed on a side of the quenching machine away from the quenching furnace, and is configured to detect the flatness of the product.

[0014] The beneficial effects of the quenching machine and the quenching production line provided by this application are as follows: The spraying direction of the upper spraying unit or the lower spraying unit is inclined toward the side close to the straightening mechanism, and a component force in the first direction can be applied to the product by spraying the fluid, so that the product moves toward the straightening mechanism under the push of the fluid; there is no occlusion between the fluid and the product, and the fluid above and below the product can directly cool the product, making the cooling of each position of the product more uniform, and solving the technical problem that the conveying roller affects the cooling of the product during quenching in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of this application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 Schematic diagram of the quenching machine provided by the embodiment of this application;

[0017] Figure 2 Top view of the upper spraying unit adapted to the product provided by the embodiment of this application;

[0018] Figure 3 Schematic diagram of the connection of the first straightening roller set with the pressure member, the upper pressing member, and the lower pressing member provided by the embodiment of this application;

[0019] Figure 4 Schematic diagram of the quenching production line provided by the embodiment of this application.

[0020] Among them, each reference numeral in the figure:

[0021] 1000, quenching production line;

[0022] 100, quenching machine;

[0023] 10, spraying mechanism; 11, upper spraying unit; 12, lower spraying unit; 13, first spraying component; 14, second spraying component; 15, supplementary nozzle;

[0024] 20. Straightening mechanism; 21. Extrusion roller group; 211. Upper extrusion roller; 212. Lower extrusion roller; 22. First straightening roller group; 221. First upper roller; 222. First lower roller; 23. Second straightening roller group; 231. Second upper roller; 232. Second lower roller; 24. Pressure member; 25. Upper pressing member; 26. Lower pressing member;

[0025] 30. Third spraying component; 31. Cooling nozzle; 32. Cleaning nozzle;

[0026] 40. Housing; 41. Feed inlet; 42. Discharge outlet;

[0027] 50. Product;

[0028] 200. Quenching furnace;

[0029] 300. Product detection device;

[0030] 400. Conveying mechanism;

[0031] 500. Flatness detection device. Detailed implementation manners

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer and more understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0034] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality" means two or more unless otherwise specifically defined.

[0036] An embodiment of this application provides a quenching machine 100 and a quenching production line 1000 for quenching and straightening a product 50. In the embodiment of this application, the product 50 is taken as a steel plate for illustration. It can be understood that the product 50 can also be other products that need quenching.

[0037] To achieve the above object, in a first aspect, an embodiment of this application provides a quenching machine 100. Please refer to Figures 1 to 3 , the quenching machine 100 includes a spraying mechanism 10 and a straightening mechanism 20 arranged in sequence along a first direction X; the spraying mechanism 10 includes an upper spraying unit 11 and a lower spraying unit 12 arranged oppositely. Both the upper spraying unit 11 and the lower spraying unit 12 extend along the first direction X. The upper spraying unit 11 is used to spray a fluid onto the product 50 to cool the product 50; the lower spraying unit 12 is used to spray a fluid onto the product 50 to support and cool the product 50; the spraying directions of the upper spraying unit 11 and / or the lower spraying unit 12 are inclined towards the side close to the straightening mechanism 20 to push the product 50 along the first direction X to the straightening mechanism 20.

[0038] It can be understood that the upper spraying unit 11 is used to spray a fluid onto the product 50 from above the product 50; the fluid can be a gas or a liquid; optionally, the product 50 is a wear-resistant steel plate of NM500, NM550 or NM600 grade with a thickness of 1.2 mm - 1.5 mm.

[0039] It can be understood that the lower spraying unit 12 is used to spray a fluid onto the product 50 from below the product 50. Optionally, the component of the fluid sprayed by the lower spraying unit 12 in the vertical direction on the product 50 is equal to the sum of the component of the fluid sprayed by the upper spraying unit 11 in the vertical direction and the gravity of the corresponding part of the product 50 of the spraying mechanism 10, so that the product 50 remains stable in the vertical direction.

[0040] It can be understood that the spraying direction of the upper spraying unit 11 is inclined towards the side close to the straightening mechanism 20; or, the spraying direction of the lower spraying unit 12 is inclined towards the side close to the straightening mechanism 20; or the spraying directions of both the upper spraying unit 11 and the lower spraying unit 12 are inclined towards the side close to the straightening mechanism 20.

[0041] The straightening mechanism 20 is used to support the product 50 and convey the product 50 along the first direction X, and is also used to straighten the product 50.

[0042] The beneficial effects of this embodiment are as follows: The spraying direction of the upper spraying unit 11 or the lower spraying unit 12 is inclined towards the side close to the straightening mechanism 20, and a component force along the first direction X can be applied to the product 50 by spraying the fluid, so that the product 50 moves towards the straightening mechanism 20 under the push of the fluid; there is no conveying roller blocking between the fluid and the product 50, and the fluid above and below the product 50 can directly cool the product 50, making the cooling of each position of the product 50 more uniform, and solving the technical problem that the conveying roller affects the cooling of the product 50 during quenching in the prior art. During the quenching process of the steel plate, the latent heat of phase change and phase change expansion generated by the phase change will cause the plate shape of the quenched steel plate to be very poor, and the subsequent processing of the steel plate mainly composed of the hard phase martensite is more difficult. The straightening mechanism 20 is provided in this embodiment to straighten the steel plate during the quenching process and reduce the processing difficulty.

[0043] In some embodiments, please refer to Figure 1 , the included angle between the spraying direction of the upper spraying unit 11 and / or the lower spraying unit 12 and the first direction X is 36° - 45°.

[0044] It can be understood that the included angle A between the spraying direction of the upper spraying unit 11 and the first direction X is 36° - 45°; or, the included angle between the spraying direction of the lower spraying unit 12 and the first direction X is 36° - 45°; or, the included angles between the spraying directions of the upper spraying unit 11 and the lower spraying unit 12 and the first direction X are both 36° - 45°. Optionally, the included angle between the spraying direction of the upper spraying unit 11 or the lower spraying unit 12 and the first direction X can be set to 38°, 40° or 45°.

[0045] The beneficial effect of this embodiment is: Setting the above included angle range enables the fluid sprayed by the upper spraying unit 11 or the lower spraying unit 12 to generate a relatively large component force on the product 50 in the first direction X, and at the same time enables the spraying mechanism 10 to have a relatively small length in the first direction X, reducing the space occupation.

[0046] In some embodiments, please refer to Figure 1 , the quenching machine 100 further includes a housing 40 extending along the first direction X, and the housing 40 includes a feed inlet 41 and a discharge outlet 42; the spraying mechanism 10 and the straightening mechanism 20 are both arranged inside the housing 40.

[0047] It can be understood that the feed inlet 41 and the discharge outlet 42 are sequentially arranged at both ends of the housing 40 along the first direction X, and the spraying mechanism 10 is arranged on the side of the straightening mechanism 20 close to the feed inlet 41. When the product 50 is quenched, it passes through the spraying mechanism 10 and the straightening mechanism 20 in sequence from the feed inlet 41.

[0048] The beneficial effects of this embodiment are as follows: By providing the housing 40, the influence of the external environment on the cooling of the product 50 can be reduced, making the cooling of the product 50 more uniform.

[0049] In some embodiments, please refer to Figure 1 and Figure 2 , the upper injection unit 11 and the lower injection unit 12 are respectively arranged on both sides of the product 50 along the second direction Z; both the upper injection unit 11 and the lower injection unit 12 include a plurality of first injection components 13 and a plurality of second injection components 14 distributed along the first direction X; the first injection components 13 are used to cool the middle part of the product 50 along the third direction Y; the first direction X, the second direction Z, and the third direction Y are perpendicular to each other; a plurality of second injection components 14 are respectively arranged on both sides of the first injection components 13 along the third direction Y to cool both ends of the product 50 along the third direction Y; the distance between adjacent second injection components 14 in the first direction X is greater than the distance between adjacent first injection components 13, so that the cooling speed of the middle part of the product 50 by the fluid is faster than that of both ends.

[0050] It can be understood that the first direction X only represents the direction from the injection mechanism 10 to the straightening mechanism 20; the second direction Z represents the direction from the first injection assembly to the second injection assembly and the opposite direction; the third direction Y represents the direction from the first injection assembly to the second injection assembly and the opposite direction.

[0051] Optionally, the first direction X is the length direction of the product 50, the second direction Z is the thickness direction of the product 50, and the third direction Y is the width direction of the product 50.

[0052] It can be understood that the first injection components 13 are more densely distributed in the first direction X than the second injection components 14 in the first direction X. Optionally, the first injection components 13 are equally spaced along the first direction X, and the second injection components 14 are equally spaced along the first direction X.

[0053] Optionally, the first injection components 13 and the second injection components 14 can be multiple sector nozzles distributed along the third direction Y, or can be an air curtain nozzle or a water curtain nozzle with a length along the third direction Y.

[0054] In the natural state, both ends of the product 50 in the third direction Y can dissipate heat from the upper surface, the lower surface, and the end surface respectively, while only the upper surface and the lower surface of the middle part of the product 50 can dissipate heat, making the heat dissipation speed of both ends of the product 50 faster and the overall cooling of the product 50 uneven.

[0055] The beneficial effects of this embodiment are as follows: The distance between adjacent second injection components 14 in the first direction X is greater than the distance between adjacent first injection components 13, so that the cooling rate of the product 50 by the fluid in the middle in the third direction Y is faster than that at both ends, which can compensate for the difference in cooling rate between the middle and both ends of the product 50, making the cooling rate between the middle and both ends of the product 50 more consistent and the overall cooling of the product 50 uniform.

[0056] In some embodiments, please refer to Figure 1 and Figure 2 , both the first injection component 13 and the second injection component 14 include air curtain nozzles; the injection mechanism 10 further includes a plurality of supplementary nozzles 15 distributed along the first direction X, and the supplementary nozzles 15 are arranged between the first injection component 13 and the second injection component 14 to cool the area of the product 50 between the first injection component 13 and the second injection component 14; the injection direction of the supplementary nozzles 15 forms an angle of 36° - 45° with the first direction X.

[0057] The length direction of the air curtain nozzle is the third direction Y. Optionally, the supplementary nozzle 15 is a wide-angle nozzle or a straight nozzle. Optionally, the angle between the injection direction of the supplementary nozzle 15 and the first direction X can be set to 36°, 42° or 43°.

[0058] The beneficial effects of this embodiment are as follows: Setting the air curtain nozzle can eject a continuous air curtain to uniformly cool the product 50; during installation, there needs to be a certain gap between adjacent air curtain nozzles along the third direction Y, and the supplementary nozzle 15 can fill the gap between two air curtain nozzles to uniformly cool the product 50.

[0059] In some embodiments, please refer to Figure 1 , the straightening mechanism 20 includes a squeezing roller group 21 and several first straightening roller groups 22 arranged in sequence along the first direction X; the squeezing roller group 21 includes a plurality of upper squeezing rollers 211 and a plurality of lower squeezing rollers 212, the diameters of the upper squeezing rollers 211 and the lower squeezing rollers 212 are equal, and the upper squeezing rollers 211 and the lower squeezing rollers 212 are alternately arranged along the first direction X; the first straightening roller group 22 includes a first upper roller 221 and a first lower roller 222 arranged oppositely.

[0060] It can be understood that the upper squeezing rollers 211, the lower squeezing rollers 212, the first upper roller 221 and the first lower roller 222 all extend along the third direction Y.

[0061] The distance between the upper squeezing roller 211 and the lower squeezing roller 212 in the second direction Z is greater than the thickness of the product 50 in the second direction Z.

[0062] It can be understood that the diameters of the first upper roller 221 and the first lower roller 222 are equal.

[0063] The beneficial effects of this embodiment are as follows: By applying a downward pressure to the product 50 through the upper pressing roller 211 and an upward pressure to the product 50 through the lower pressing roller 212, the product 50 is deformed, and the thermal stress and tissue stress of the product 50 are eliminated, making it easier for the first upper roller 221 and the first lower roller 222 to straighten the product 50.

[0064] In some embodiments, please refer to Figure 1 , the straightening mechanism 20 further includes a plurality of second straightening roller groups 23 distributed along the first direction X. The second straightening roller groups 23 are arranged on the side of the first straightening roller group 22 away from the pressing roller group 21. The second straightening roller group 23 includes a second upper roller 231 and a second lower roller 232 arranged oppositely. The diameters of the second upper roller 231, the first upper roller 221, and the upper pressing roller 211 increase in sequence.

[0065] It can be understood that the diameters of the second upper roller 231 and the second lower roller 232 are equal and both extend along the third direction Y.

[0066] The beneficial effects of this embodiment are as follows: By providing the second straightening roller group 23 to further straighten the product 50, the product 50 becomes flatter. The roller diameters of the first straightening roller group 22 and the second straightening roller group 23 gradually decrease, and the force applied to the product 50 gradually becomes smaller, enabling the product 50 to be straightened step by step and gradually improving the flatness of the product 50.

[0067] In some embodiments, please refer to Figure 1 and Figure 3 , the straightening mechanism 20 further includes a plurality of pressure members 24, a plurality of upper pressing members 25, and a plurality of lower pressing members 26. The pressure members 24 are used to provide bending roll forces to make the upper pressing roller 211, the lower pressing roller 212, the first upper roller 221, and the first lower roller 222 bend positively. Each upper pressing member 25 presses against the tops of the upper pressing roller 211, the first upper roller 221, and the second upper roller 231 respectively. Each lower pressing member 26 presses against the bottoms of the lower pressing roller 212, the first lower roller 222, and the second lower roller 232 respectively.

[0068] It can be understood that each pressure member 24 is respectively arranged at the end portions of the upper squeezing roller 211, the lower squeezing roller 212, the first upper roller 221 and the first lower roller 222, and the second upper roller 231 and the second lower roller 232 along the length direction. Some of the pressure members 24 are arranged above the upper squeezing roller 211 and the first upper roller 221 and apply a downward pressure on the upper squeezing roller 211 and the first upper roller 221; some other pressure members 24 are arranged below the lower squeezing roller 212 and the first lower roller 222 and apply an upward pressure on the lower squeezing roller 212 and the first lower roller 222. Optionally, the pressure member 24 is a hydraulic cylinder and applies pressure to the roller through a bearing box. Positive bending utilizes the work roll deflection generated by the bending roll force to reduce the deflection of the rolling force acting on the work roll. The upper squeezing roller 211, the lower squeezing roller 212, the first upper roller 221 and the first lower roller 222 are all work rolls.

[0069] It can be understood that the upper pressing member 25 applies a downward pressure on the upper squeezing roller 211 and the first upper roller 221, and the lower pressing member 26 applies an upward pressure on the lower squeezing roller 212 and the first lower roller 222; the upper pressing member 25 and the lower pressing member 26 are arranged at the middle parts of the upper squeezing roller 211, the lower squeezing roller 212, the first upper roller 221 and the first lower roller 222 along the third direction Y. Optionally, the upper pressing member 25 and the lower pressing member 26 are pressing rollers extending along the third direction Y, and the length of the pressing roller is less than the lengths of the upper squeezing roller 211, the first upper roller 221 and the second upper roller 231.

[0070] The beneficial effect of this embodiment is that by arranging the pressure member 24, the upper pressing member 25 and the lower pressing member 26, the forces applied by the product 50 on the upper squeezing roller 211, the lower squeezing roller 212, the first upper roller 221 and the first lower roller 222 can be balanced, reducing the deformation of the upper squeezing roller 211, the lower squeezing roller 212, the first upper roller 221 and the first lower roller 222, and making the product 50 flatter.

[0071] In some embodiments, please refer to Figure 1 Figure, the quenching machine 100 further includes a plurality of third spraying components 30. Each third spraying component 30 is respectively arranged between adjacent upper squeezing rollers 211, between adjacent lower squeezing rollers 212, between adjacent first straightening roller groups 22, and between adjacent second straightening roller groups 23; the third spraying component 30 is used for spraying fluid onto the product 50, the upper squeezing roller 211, the lower squeezing roller 212, the first straightening roller group 22 and the second straightening roller group 23.

[0072] It can be understood that third spraying components 30 are provided between adjacent first upper rollers 221, between adjacent first lower rollers 222, between adjacent second upper rollers 231, and between adjacent second lower rollers 232; optionally, the third spraying component 30 includes a cooling nozzle 31 and cleaning nozzles 32 disposed on both sides of the cooling nozzle 31. The cooling nozzle 31 and the cleaning nozzles 32 are distributed along the first direction X. The cooling nozzle 31 is configured to spray a fluid onto the product 50 from above and below along the second direction Z; the spraying directions of the cleaning nozzles 32 are arranged towards the directions close to the upper pressing roller 211, the lower pressing roller 212, the first upper roller 221, the first lower roller 222, the second upper roller 231, and the second lower roller 232. The cleaning nozzles 32 are configured to spray a fluid onto the product 50, the upper pressing roller 211, the lower pressing roller 212, the first upper roller 221, the first lower roller 222, the second upper roller 231, and the second lower roller 232. The cleaning nozzles 32 and the cooling nozzle 31 can be configured as air curtain nozzles with lengths along the third direction Y.

[0073] The beneficial effects of this embodiment are as follows: The provision of the third spraying component 30 can straighten the product 50 while cooling the product 50, so that the product 50 is not prone to plastic deformation after being straightened; the third spraying component 30 can also clean the pressing roller set 21, the first straightening roller set 22, and the second straightening roller set 23, reducing the influence of dirt on the straightening of the product 50.

[0074] In some embodiments, please refer to Figures 1 to 3 , the quenching machine 100 includes a housing 40, a spraying mechanism 10, a straightening mechanism 20, and a third spraying component 30; the housing 40 extends along the first direction X, and the housing 40 includes a feed port 41 and a discharge port 42 sequentially arranged at both ends along the first direction X; the spraying mechanism 10 and the straightening mechanism 20 are sequentially arranged in the housing 40 along the first direction X.

[0075] The spraying mechanism 10 includes an upper spraying unit 11 and a lower spraying unit 12 arranged oppositely. The upper spraying unit 11 is configured to spray a gas onto the product 50 to cool the product 50; the lower spraying unit 12 is configured to spray a gas onto the product 50 to support and cool the product 50.

[0076] The upper injection unit 11 and the lower injection unit 12 are respectively arranged on both sides of the product 50 along the second direction Z; both the upper injection unit 11 and the lower injection unit 12 include a plurality of first injection components 13 and a plurality of second injection components 14 distributed along the first direction X; the first injection components 13 are used to cool the middle part of the product 50 along the third direction Y; the first direction X, the second direction Z, and the third direction Y are perpendicular to each other; a plurality of second injection components 14 are respectively arranged on both sides of the first injection components 13 along the third direction Y to cool both ends of the product 50 along the third direction Y; the distance between adjacent second injection components 14 in the first direction X is greater than the distance between adjacent first injection components 13, so that the cooling speed of the middle part of the product 50 by the gas is faster than that of both ends. Both the first injection components 13 and the second injection components 14 are set as air curtain nozzles with the length direction being the third direction Y; the injection directions of both the first injection components 13 and the second injection components 14 with respect to the first direction X are both 40°, so as to push the product 50 along the first direction X to the straightening mechanism 20.

[0077] The straightening mechanism 20 includes a squeezing roller group 21, a plurality of first straightening roller groups 22, and a plurality of second straightening roller groups 23 arranged in sequence along the first direction X; the squeezing roller group 21 includes a plurality of upper squeezing rollers 211 and a plurality of lower squeezing rollers 212 with equal diameters, and the upper squeezing rollers 211 and the lower squeezing rollers 212 are arranged alternately along the first direction X; the first straightening roller group 22 includes a first upper roller 221 and a first lower roller 222 which are oppositely arranged and have equal diameters; the second straightening roller group 23 includes a second upper roller 231 and a second lower roller 232 which are oppositely arranged and have equal diameters, and the diameters of the second upper roller 231, the first upper roller 221, and the upper squeezing roller 211 increase in sequence.

[0078] Each third injection component 30 is respectively arranged between adjacent upper squeezing rollers 211, between adjacent lower squeezing rollers 212, between adjacent first straightening roller groups 22, and between adjacent second straightening roller groups 23; the third injection component 30 is used to inject gas to the product 50, the upper squeezing rollers 211, the lower squeezing rollers 212, the first straightening roller groups 22, and the second straightening roller groups 23.

[0079] During quenching, the austenitized steel plate product 50 after heating is conveyed from the feed inlet 41 into the housing 40; when the steel plate product 50 passes through the spraying mechanism 10, the upper spraying unit 11 sprays gas from above the steel plate product 50, and the lower spraying unit 12 sprays gas from below the steel plate product 50. The component of the gas in the first direction X pushes the steel plate product 50 towards the straightening mechanism 20. When the steel plate product 50 passes through the straightening mechanism 20, the third spraying component 30 sprays gas on the steel plate product 50 to cool the steel plate product 50; the upper pressing roller 211 applies a downward pressure on the steel plate product 50 to deform the steel plate product 50 downward along the second direction Z; the lower pressing roller 212 applies an upward pressure on the steel plate product 50 to deform the steel plate product 50 upward. The upper pressing roller 211 and the lower pressing roller 212 eliminate the thermal stress and structure stress of the steel plate product 50 and convey the steel plate product 50 to the first straightening roller set 22. Subsequently, the first upper roller 221 and the first lower roller 222 roughly straighten the steel plate product 50 and convey the steel plate product 50 to the second straightening roller set 23. The second upper roller 231 and the second lower roller 232 finely straighten the steel plate product 50 and convey the steel plate product 50 to the discharge outlet 42.

[0080] In a second aspect, an embodiment of the present application provides a quenching production line 1000. Please refer to Figure 4 , the quenching production line 1000 includes a quenching furnace 200 and a quenching machine 100 sequentially distributed along the first direction X, and further includes a conveying mechanism 400 disposed between the quenching furnace 200 and the quenching machine 100; the quenching machine 100 is the quenching machine 100 according to any one of the embodiments of the first aspect; the conveying mechanism 400 is used to convey the product 50 along the first direction X.

[0081] It can be understood that the quenching furnace 200 is used to heat the product 50.

[0082] Optionally, the conveying mechanism 400 is a conveying roller, and the conveying mechanism 400 is used to convey the product 50 heated by the quenching furnace 200 into the quenching machine 100.

[0083] The beneficial effect of this embodiment is that the quenching production line 1000 uses the above-mentioned quenching machine 100. There is no conveying roller blocking between the fluid and the product 50, and the fluid above and below the product 50 can directly cool the product 50, making the cooling of each position of the product 50 more uniform, and solving the technical problem that the conveying roller affects the cooling of the product 50 during quenching in the prior art.

[0084] In some embodiments, the quenching production line 1000 also includes a controller, a product inspection device 300 and a straightness inspection device 500. The product inspection device 300 is arranged between the quenching furnace 200 and the quenching machine 100. The product inspection device 300 is used to detect product parameters. The controller is used to control the process parameters of the injection mechanism 10 according to the product parameters. The process parameters include at least one of the injection pressure and the injection flow rate. The straightness inspection device 500 is arranged on the side of the quenching machine 100 away from the quenching furnace 200. The straightness inspection device 500 is used to detect the straightness of the product 50.

[0085] It can be understood that the product detection device 300 is used to detect the heated product 50. The product parameters include the temperature and size of the product 50, and the product parameters of the steel plate also include the plate shape.

[0086] Optionally, the controller is also used to control the roller gap of the straightening mechanism 20 according to the product parameters. The roller gap of the straightening mechanism 20 includes the distance between the upper squeezing roller 211 and the lower squeezing roller 212 in the second direction, the gap between the first upper roller 221 and the first lower roller 222, and the gap between the second upper roller 231 and the second lower roller 232.

[0087] It can be understood that the straightness detection device 500 is used to detect the product 50 after quenching and straightening, and the controller is used to control the process parameters of the injection mechanism 10 and the roller gap of the straightening mechanism 20 according to the straightness of the product 50 to adjust the straightness of the subsequent product 50.

[0088] The beneficial effects of this embodiment are as follows: adjusting the injection pressure and injection flow rate of the injection mechanism 10 can adjust the cooling speed of the product 50. Adjusting the cooling speed of the product 50 according to the temperature and size of the product 50 can make the product 50 reach a suitable phase change temperature when passing through the injection mechanism 10; adjusting the cooling speed of the product 50 according to the straightness of the product 50 after straightening can make the product 50 at a suitable temperature when it reaches the straightening mechanism 20, making it easier to straighten the product 50. Adjusting the roller gap according to the size of the product 50 allows the straightening mechanism 20 to be suitable for products 50 of different thicknesses; adjusting the roller gap according to the straightness of the product 50 after straightening can adjust the pressure applied to the product 50, adjust the straightening effect, and improve the qualified rate of the product 50.

[0089] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A quenching machine, characterized in that: It includes a spraying mechanism and a straightening mechanism arranged in sequence along a first direction; The spray mechanism comprises an upper spray unit and a lower spray unit which are arranged opposite to each other, wherein the upper spray unit and the lower spray unit both extend along a first direction, and the upper spray unit is used to spray a fluid onto the product to cool the product; The lower spray unit is used to spray the fluid toward the product to support and cool the product; The spraying direction of the upper spraying unit and / or the lower spraying unit is tilted toward the side close to the straightening mechanism, so as to push the product to the straightening mechanism along the first direction.

2. The quenching machine according to claim 1, characterized in that The angle between the spraying direction of the upper spraying unit and / or the lower spraying unit and the first direction is 36°-45°.

3. The quenching machine according to claim 1, characterized in that The upper spray unit and the lower spray unit are respectively arranged on both sides of the product along the second direction; the upper spray unit and the lower spray unit each include a plurality of first spray components and a plurality of second spray components distributed along the first direction; the first spray component is used to cool the middle part of the product along the third direction; the first direction, the second direction and the third direction are perpendicular to each other; A plurality of second jet components are respectively arranged on both sides of the first jet component along the third direction to cool the two ends of the product along the third direction; the distance between adjacent second jet components in the first direction is greater than the distance between adjacent first jet components, so that the fluid cools the middle part of the product faster than the two ends.

4. The quenching machine according to claim 3, characterized in that The first spray component and the second spray component both include an air curtain nozzle; the spray mechanism also includes a plurality of supplementary nozzles distributed along the first direction, and the supplementary nozzles are arranged between the first spray component and the second spray component to cool the area of ​​the product between the first spray component and the second spray component; the angle between the spray direction of the supplementary nozzle and the first direction is 36°-45°.

5. The quenching machine according to any one of claims 1 to 4, characterized in that: The straightening mechanism includes an extrusion roller group and a plurality of first straightening roller groups arranged in sequence along a first direction; the extrusion roller group includes a plurality of upper extrusion rollers and a plurality of lower extrusion rollers, the diameters of the upper extrusion rollers are equal to those of the lower extrusion rollers, and the upper extrusion rollers and the lower extrusion rollers are alternately arranged along the first direction; the first straightening roller group includes a first upper roller and a first lower roller arranged opposite to each other.

6. The quenching machine according to claim 5, characterized in that The straightening mechanism also includes a plurality of second straightening roller groups distributed along the first direction, wherein the second straightening roller group is arranged on a side of the first straightening roller group away from the squeezing roller group; the second straightening roller group includes a second upper roller and a second lower roller arranged opposite to each other, and the diameters of the second upper roller, the first upper roller, and the upper squeezing roller increase sequentially.

7. The quenching machine according to claim 6, characterized in that The straightening mechanism also includes multiple pressure pieces, multiple upper pressure pieces and multiple lower pressure pieces; the pressure pieces are used to provide bending roller force to make the upper extrusion roller, the lower extrusion roller, the first upper roller and the first lower roller bend; each of the upper pressure pieces presses against the top end of the upper extrusion roller, the first upper roller and the second upper roller respectively; each of the lower pressure pieces presses against the bottom end of the lower extrusion roller, the first lower roller and the second lower roller respectively.

8. The quenching machine according to claim 6, characterized in that The quenching machine also includes a plurality of third injection components, each of which is respectively arranged between adjacent upper extrusion rollers, between adjacent lower extrusion rollers, between adjacent first straightening roller groups, and between adjacent second straightening roller groups; the third injection components are used to spray the fluid onto the product, the upper extrusion roller, the lower extrusion roller, the first straightening roller group, and the second straightening roller group.

9. A quenching production line, characterized in that: It comprises a quenching furnace and a quenching machine distributed in sequence along a first direction, and also comprises a conveying mechanism arranged between the quenching furnace and the quenching machine; the quenching machine is the quenching machine described in any one of claims 1-8; the conveying mechanism is used to convey the product along the first direction.

10. The quenching production line according to claim 9, characterized in that: The quenching production line also includes a controller, a product detection device and a straightness detection device. The product detection device is arranged between the quenching furnace and the quenching machine. The product detection device is used to detect product parameters. The controller is used to control the process parameters of the injection mechanism according to the product parameters. The process parameters include at least one of injection pressure and injection flow rate. The straightness detection device is arranged on the side of the quenching machine away from the quenching furnace. The straightness detection device is used to detect the straightness of the product.

Images