WO2022236971A1 - Appareil et procédé de trempe pour un récipient de type bouteille pour une station à paroi épaisse - Google Patents

Appareil et procédé de trempe pour un récipient de type bouteille pour une station à paroi épaisse Download PDF

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Publication number
WO2022236971A1
WO2022236971A1 PCT/CN2021/109666 CN2021109666W WO2022236971A1 WO 2022236971 A1 WO2022236971 A1 WO 2022236971A1 CN 2021109666 W CN2021109666 W CN 2021109666W WO 2022236971 A1 WO2022236971 A1 WO 2022236971A1
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WO
WIPO (PCT)
Prior art keywords
product
cooled
quenching
bottle
thick
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Application number
PCT/CN2021/109666
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English (en)
Chinese (zh)
Inventor
王艳辉
王利民
汪龙
陈彦飞
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中材科技（苏州）有限公司
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Publication of WO2022236971A1 publication Critical patent/WO2022236971A1/fr

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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
    • C21D1/667—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
    • 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
    • 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
    • C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
    • 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
    • C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below

Definitions

  • the invention relates to a quenching solution for structure strengthening of steel pipe products, in particular to a brand-new quenching equipment and its implementation method for thick-walled products whose hardenability reaches the range of 40-50 mm, and belongs to the field of steel application technology.
  • the pressure levels of hydrogen refueling stations are 35MPa and 70MPa.
  • the construction of hydrogen refueling stations of both specifications has just started. Because of the large capacity of the bottle container of 35Ma hydrogen refueling stations and high safety factor, it has become the preferred pressure level for building hydrogen refueling stations. Correspondingly, it is necessary to adopt a steel bottle container with a thickness greater than 40mm.
  • the present invention aims to propose a quenching device and quenching method for bottle-type containers used in thick-walled stations, in order to obtain bottle-type containers. High pressure demands.
  • the technical solution of the present invention to achieve one of the above objects is a quenching device for a bottle-type container used in a thick-walled station. It consists of double-surface spraying mechanism, rotating mechanism and pressing mechanism, wherein the quenching tank is filled with quenching liquid, and the rotating mechanism uses a set of supporting rollers to support the bottom side of the product to be cooled and drive the product to be cooled to rotate , the pressing mechanism utilizes the lower pressing wheel driven by the air cylinder to contact the upper surface of the product to be cooled to locate the rotation axis, and the double-surface spraying mechanism includes an outer surface spraying unit distributed outside the product to be cooled and distributed on two sides. The end is aligned with the spray unit on the inner surface of the bottle mouth, facing the product to be cooled and cooling both inside and outside synchronously.
  • the outer surface spraying unit includes two or more nozzles parallel to the axial direction of the product to be cooled and through which the internal quenching liquid circulates, and the nozzles are evenly distributed within a 180° circumferential range of the lower side of the product to be cooled, And facing the product to be cooled, there are liquid spray grooves or liquid spray holes that are evenly distributed and scour the surface.
  • the spout of the inner surface spray unit is located outside the bottle mouth of the product to be cooled, and the pump flow intensity is sufficient to fill the inner cavity of the product to be cooled with quenching liquid within 10 seconds.
  • the rotating mechanism is provided with a set of idler rollers and a drive motor composed of driving rollers and driven rollers, and the set of idler rollers is parallel to the axial direction of the product to be cooled and supported tangentially on the surface, wherein the active The roller is driven to rotate by the drive motor, and the product to be cooled and the driven roller are driven to rotate accordingly.
  • the drive motor is integrated with a frequency converter with variable frequency and speed regulation.
  • the pressing mechanism is provided with several pressing units in sections along the length direction of the product to be cooled, and any of the pressing units has a waterproof cooling layer integrally attached to the top of the quenching tank and its embedded assembly and Paired cylinders, guide rods and lower pressure wheels, the lower pressure wheels are driven and guided to expand and contract, and press against, roll and slide against the outer surface on both sides of the longitudinal axis section of the product to be cooled.
  • the technical solution to achieve the second objective of the present invention is a quenching method for a thick-walled bottle-type container, which is characterized in that the product to be cooled is transferred from the quenching furnace to the quenching tank by driving the translation mechanism through a control signal.
  • the above quenching tank is equipped with quenching liquid, which is tangentially supported on a set of rollers of the rotating mechanism, and the cylinder set by the pressing mechanism is used to drive the lower pressure wheel to protrude along the guide rod and press against the upper side of the product to be cooled
  • the outer surface, eliminating the floating state, and then the driving motor set by the rotating mechanism is driven by the driving roller, so that the product to be cooled continues to rotate, and the pump valve of the double-surface spraying mechanism is started at the same time, and the outer surface and the inner surface of the product to be cooled are sprayed synchronously. Drizzle and cool evenly.
  • a performance index detection step is also included.
  • the sampling section includes three rings along the middle of the axial length and 200 mm from the circular arc transition section at both ends of the container, and the sampling and analysis positions include the bottom, side and top of each ring relative to the quenching tank .
  • the application of the quenching device and its process of the present invention has outstanding substantive features and significant progress: under the optimization of the original quenching equipment mechanism and quenching process, the product to be cooled is rotated and compressed, and the inner and outer surfaces are simultaneously quenched.
  • the liquid spraying method improves cooling uniformity and cost utilization, and enables the product to pass the test in a hydrogen environment and achieve stable and reliable performance, thereby meeting the requirements of a sharp increase in the demand for bottle containers used in hydrogen refueling stations.
  • Fig. 1 is a schematic diagram of the general assembly structure of the quenching device of the present invention in the quenching tank.
  • Fig. 2 is a structural perspective view from another angle of view of Fig. 1 .
  • the present invention aims at improving the filling performance requirements of thick-walled bottle-type containers for the development and application of hydrogen energy, and analyzes and improves traditional quenching equipment and processes.
  • a quenching device for thick-walled station-use bottle-type containers and
  • the working object is a bottle container with a wall thickness of 40-50mm.
  • the main body is in the shape of a tube, and the two ends are in the shape of a radially narrowed bottle mouth and are axially penetrated.
  • the quenching process includes two parts: heat preservation in a heating furnace and rapid cooling in a quenching tank.
  • the present invention focuses on improving the latter part, which can be seen in the schematic diagrams and structural perspective views of the quenching tank from different angles of view as shown in Figure 1 and Figure 2 .
  • the quenching device is composed of a double-surface spraying mechanism 3 , a rotating mechanism and a pressing mechanism 5 installed based on the layout of the quenching tank 1 . From the point of view of the main function design of each part, the rotation mechanism uses a set of supporting rollers to support the bottom side of the product 2 to be cooled and drive the product 2 to rotate.
  • the main function is to stably support the quenching object and drive it to rotate, so that All parts of the surface have an equal opportunity to be sprayed with quenching liquid to reduce the temperature evenly.
  • the pressing mechanism 5 utilizes the lower pressure wheel driven by the air cylinder to contact the upper surface of the product to be cooled to locate the rotation axis. Uniform cooling reliability.
  • the double-surface spray mechanism includes an outer surface spray unit 31 distributed outside the product to be cooled and an inner surface spray unit 32 distributed at both ends to align with the mouth of the bottle inward. Its main function is Through the control of the pump valve, the product to be cooled can be cooled evenly inside and outside simultaneously.
  • the outer surface spray unit 31 includes more than two nozzles parallel to the axial direction of the product to be cooled and through which the quenching liquid circulates.
  • the spout of the inner surface spray unit 32 is located outside the bottle mouth of the product to be cooled, and the pump flow intensity is sufficient to fill the inner cavity of the product to be cooled with quenching liquid within 10 seconds. In this way, when the product to be cooled is pressed and rotated, it can quickly realize synchronous cooling from the inside to the outside in conjunction with the cooling of the outer surface.
  • the rotating mechanism is provided with a set of idler rollers composed of driving rollers 41 and driven rollers 42 and a driving motor 43 .
  • the group of supporting rollers is parallel to the axial direction of the product to be cooled and tangentially supported on the surface, and the driving roller is driven by the driving motor to rotate.
  • the driving motor 43 is integrated with a frequency converter with variable frequency and speed regulation, so as to meet the requirements of the speed on the uniformity of hardening at different cooling rates during the quenching and cooling process.
  • the above-mentioned pressing mechanism 5 is provided with several pressing units (five in the illustrated embodiment) in sections along the length direction of the product 2 to be cooled. Connected waterproof cooling layer 51 and its embedded assembly and paired cylinder 52, guide rod 53 and lower pressure wheel 54. Wherein, the lower pressing wheel 54 is driven and guided to expand and contract, and presses and rolls against the outer surface on both sides of the longitudinal axis section of the product to be cooled.
  • the pressing mechanism needs to meet two technical requirements. One is to correspond to the supporting force of a group of rollers to be cooled. Floating, jumping and other phenomena that are not conducive to the improvement of quenching efficiency; the second is that the lower pressure wheel is in rolling contact with the outer surface of the product to be cooled. reduced to a minimum.
  • the quenching device On the basis of the structural characteristics of the above-mentioned quenching device, it also brings about simultaneous improvements in the quenching process.
  • a high-temperature heating furnace that is, the quenching furnace
  • the quenching furnace discharges the rod; then the product to be cooled is quickly transferred from the quenching furnace to the quenching tank through the control signal to drive the translation mechanism.
  • the cylinder set in the pressing mechanism drives the lower pressing wheel to protrude along the guide rod and press against the upper outer surface of the product to be cooled to eliminate the floating state, and then the driving motor set in the rotating mechanism is driven by the driving roller to make the product to be cooled Continuously rotate, start the pump valve of the double-surface spraying mechanism at the same time, spray the outer surface and inner surface of the product to be cooled synchronously, and cool evenly.
  • sampling is carried out from the sample in sections and locations; the sample length is about 3280mm, and the sampling section includes three rings in the middle of the axial length and 200mm near the arc transition section at both ends of the container, and the sampling analysis
  • the location includes each ring below, side and above the quenching tank.
  • GB/T34542 GB/T228 and other standards for sampling, another part of the performance index under hydrogen environment is obtained by at least including slow strain rate tensile test, fatigue fracture growth rate test and fracture toughness test under hydrogen environment, and The test results also met expectations.
  • the detailed description of the embodiment of the present invention highlights the innovative essence of the technical solution of the present invention, and has a breakthrough improvement: under the optimization of the original quenching equipment mechanism and the quenching process, the products to be cooled are subjected to rotation and compression. At the same time, it is equipped with the measures of synchronous quenching liquid spraying on the inner and outer surfaces, which can improve the uniformity of the cooling effect in a very short time, improve the cost utilization rate, and increase the gross profit by more than five times. It can realize the product to pass the test under the hydrogen environment. To achieve stable and reliable performance, and then meet the requirements of the sharp increase in demand for bottle containers used in hydrogen refueling stations.
  • the present invention can also have other implementations, and all technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection claimed by the present invention.

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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 Articles (AREA)

Abstract

La présente invention concerne un appareil et un procédé de trempe pour un récipient de type bouteille pour une station à paroi épaisse. L'épaisseur de paroi du récipient de type bouteille pour un objet trempé est de 40 à 50 mm. L'appareil comprend un mécanisme de pulvérisation à double surface, un mécanisme de rotation et un mécanisme de pressage qui sont agencés sur la base d'une cuve de trempe (remplie d'un liquide de trempe) ; le mécanisme de rotation supporte, en utilisant l'ensemble de rouleaux de support, le côté inférieur d'un produit à refroidir, et entraîne ledit produit en rotation ; dans le mécanisme de pressage, des roues de pressage inférieures entraînées par un cylindre pneumatique viennent en butée contre la surface supérieure dudit produit pour effectuer le positionnement d'une direction axiale de rotation ; et le mécanisme de pulvérisation à double surface comprend des unités de pulvérisation de surface externe distribuées à l'extérieur dudit produit et des unités de pulvérisation de surface interne vers l'intérieur distribuées à deux extrémités et alignées avec un goulot de bouteille, et fait face audit produit pour un refroidissement interne et externe uniforme synchrone. En appliquant la solution de trempe du récipient de type bouteille de la présente invention, sous le processus de trempe optimisé du mécanisme d'équipement, un taux d'utilisation de coûts est amélioré, le test d'un produit dans un environnement d'hydrogène peut être réalisé, et des performances stables et fiables peuvent être obtenues, de telle sorte que l'exigence d'une augmentation rapide de la demande de récipients de type bouteille pour une station d'hydrogénation est satisfaite.
PCT/CN2021/109666 2021-05-14 2021-07-30 Appareil et procédé de trempe pour un récipient de type bouteille pour une station à paroi épaisse WO2022236971A1 (fr)

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CN202110525684.7 2021-05-14
CN202110525684.7A CN113265519B (zh) 2021-05-14 2021-05-14 一种厚壁站用瓶式容器的淬火装置及其淬火方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114540593A (zh) * 2022-02-08 2022-05-27 浙江金盾压力容器有限公司 一种辊棒式钢瓶热处理淬火装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201024192Y (zh) * 2007-03-20 2008-02-20 吐哈石油勘探开发指挥部机械厂 薄壁细长钢管防变形复合自动淬火装置
CN201148450Y (zh) * 2008-01-24 2008-11-12 扬州诚德钢管有限公司 一种钢管淬火设备
CN201190172Y (zh) * 2008-05-20 2009-02-04 胜利油田高原石油装备有限责任公司 一种钢管淬火装置
CN111424155A (zh) * 2020-04-08 2020-07-17 中国重型机械研究院股份公司 一种复合式钢管淬火设备及方法
CN211645332U (zh) * 2020-02-17 2020-10-09 西安万合冶金技术有限公司 钢管内喷外淋半浸加旋转式淬火机组

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201024192Y (zh) * 2007-03-20 2008-02-20 吐哈石油勘探开发指挥部机械厂 薄壁细长钢管防变形复合自动淬火装置
CN201148450Y (zh) * 2008-01-24 2008-11-12 扬州诚德钢管有限公司 一种钢管淬火设备
CN201190172Y (zh) * 2008-05-20 2009-02-04 胜利油田高原石油装备有限责任公司 一种钢管淬火装置
CN211645332U (zh) * 2020-02-17 2020-10-09 西安万合冶金技术有限公司 钢管内喷外淋半浸加旋转式淬火机组
CN111424155A (zh) * 2020-04-08 2020-07-17 中国重型机械研究院股份公司 一种复合式钢管淬火设备及方法

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