US20200340089A1 - Quenching apparatus and quenching method - Google Patents

Quenching apparatus and quenching method Download PDF

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Publication number
US20200340089A1
US20200340089A1 US16/851,899 US202016851899A US2020340089A1 US 20200340089 A1 US20200340089 A1 US 20200340089A1 US 202016851899 A US202016851899 A US 202016851899A US 2020340089 A1 US2020340089 A1 US 2020340089A1
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US
United States
Prior art keywords
workpiece
quenching
quenching apparatus
unloading ports
workpieces
Prior art date
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Pending
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US16/851,899
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English (en)
Inventor
Akifumi Suzuki
Hitoshi Sakamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Furnace Juko Co Ltd
Ryobi Ltd
Original Assignee
Furnace Juko Co Ltd
Ryobi Ltd
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Application filed by Furnace Juko Co Ltd, Ryobi Ltd filed Critical Furnace Juko Co Ltd
Assigned to RYOBI LTD., FURNACE JUKO CO., LTD. reassignment RYOBI LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SUZUKI, AKIFUMI, SAKAMOTO, HITOSHI
Publication of US20200340089A1 publication Critical patent/US20200340089A1/en
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • 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
    • C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
    • C21D1/613—Gases; Liquefied or solidified normally gaseous material
    • 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
    • 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
    • C21D9/0006—Details, accessories not peculiar to any of the following furnaces
    • C21D9/0018—Details, accessories not peculiar to any of the following furnaces for charging, discharging or manipulation of charge
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor

Definitions

  • the present invention relates to a quenching apparatus and a quenching method used to perform a quenching treatment on a workpiece unloaded from a solution treatment furnace.
  • the heat treatment of metals which is performed industrially is mainly performed using a furnace.
  • a furnace of a hot air circulation type is used for the purpose of, by way of example, reducing variations in temperature in the furnace and stabilizing quality
  • a multistage hearth rotary furnace is used for the purpose of, by way of example, space saving in a heat treatment facility.
  • a hot air circulation type multistage hearth rotary furnace having a combination of these characteristics is used for heat treatment of a metal such as an aluminum alloy.
  • Cited Literatures describing embodiments of the heat treatment furnace of this type include, for example, JP-2008-138916 A.
  • a soft material is molded first, and then is subjected to solution treatment, followed by blast quenching.
  • a metal such as an aluminum alloy subjected to a solution treatment by a multistage hearth rotary furnace of a hot air circulation type disclosed in JP-2008-138916 A, for example, has been subjected to a quenching work by a subsequent blast quenching.
  • JP-2008-138916 A for example, it is difficult to perform blast quenching for a plurality of solution-treated workpieces in a uniform manner for a group of the workpieces, and there is a room for improvement in quenching work based on the blast quenching for obtaining a plurality of workpieces having uniform quality.
  • a quenching apparatus ( 20 ) performs quenching treatment on solution-treated workpieces (W) unloaded from a solution treatment furnace ( 10 ) having a plurality of workpiece storage chambers ( 11 ) and a plurality of workpiece unloading ports ( 12 ) corresponding to the workpiece storage chambers ( 11 ), and is provided so as to be movable in accordance with the positions of the workpiece unloading ports ( 12 ).
  • Another quenching apparatus ( 20 ) performs quenching treatment on solution-treated workpieces (W) unloaded from a solution treatment furnace ( 10 ) having a plurality of workpiece storage chambers ( 11 ) arranged horizontally in an annular shape and stacked in a vertical direction and a plurality of workpiece unloading ports ( 12 ) corresponding to the workpiece storage chambers ( 11 ), and is provided so as to be movable in accordance with the positions of the workpiece unloading ports ( 12 ).
  • the quenching apparatus ( 20 ) may include a workpiece storage unit ( 21 ) configured to store a workpiece (W) unloaded from the workpiece unloading port ( 12 ), and an air-cooling fan ( 22 ) configured to air-cool the workpiece (W) stored in the workpiece storage unit ( 21 ).
  • the workpiece storage unit ( 21 ) may be provided with a shutter ( 24 ) capable of opening/closing at a position where the workpiece (W) is loaded and unloaded.
  • the quenching apparatus ( 20 ) may include a straightening plate ( 23 ) configured to straighten the air flow generated by the air-cooling fan ( 22 ).
  • the plurality workpiece unloading ports ( 12 ) may be provided in the vertical direction of the solution treatment furnace ( 10 ), and the quenching apparatus may be provided so as to be movable up and down in accordance with the positions of the workpiece unloading ports ( 12 ).
  • a quenching method is characterized in that quenching treatment is performed by using the quenching apparatus ( 20 ) described above.
  • a quenching apparatus capable of performing blast quenching for a plurality of solution-treated workpieces in a uniform manner for a group of the workpieces and consequently, capable of achieving a quenching work based on blast quenching which allows the group of the workpieces to have a uniform quality, and a quenching method performed by using the quenching apparatus are achieved.
  • FIG. 1 is a plan view illustrating a configuration example of a quenching apparatus according to a present embodiment
  • FIG. 2 is a front view illustrating a configuration example of a quenching apparatus according to the present embodiment
  • FIG. 3 is a schematic drawing for explaining a quenching method performed by using the quenching apparatus according to the present embodiment
  • FIG. 4 is a schematic drawing for explaining the quenching method performed by using the quenching apparatus according to the present embodiment
  • FIG. 5 is a schematic drawing for explaining the quenching method performed by using the quenching apparatus according to the present embodiment
  • FIG. 6 is a schematic drawing for explaining the quenching method performed by using the quenching apparatus according to the present embodiment
  • FIG. 7 is a schematic drawing for explaining the quenching method performed by using the quenching apparatus according to the present embodiment.
  • FIG. 8 is a schematic drawing for explaining the quenching method performed by using the quenching apparatus according to the present embodiment.
  • FIG. 1 is a plan view illustrating a configuration example of the quenching apparatus according to the present embodiment.
  • FIG. 2 is a front view illustrating a configuration example of the quenching apparatus according to the present embodiment.
  • FIG. 2 is a drawing illustrating the quenching apparatus according to the present embodiment viewed upward from a lower part in FIG. 1 .
  • two quenching apparatuses 20 a and 20 b are provided for one solution treatment furnace 10 .
  • the solution treatment furnace 10 includes a plurality of workpiece storage chambers 11 arranged horizontally in an annular shape. Further, the plurality of workpiece storage chambers 11 are stacked in the vertical direction, and in the case of the solution treatment furnace 10 of the present embodiment illustrated in FIG. 1 , the number of the workpiece storage chambers 11 arranged horizontally in the annular shape in one tier is sixteen, and the sixteen workpiece storage chambers 11 in one tier are arranged in the vertical direction by six tiers.
  • the plurality of workpiece unloading ports 12 are formed corresponding to the workpiece storage chambers 11 for each tier.
  • the workpiece storage chambers 11 are arranged in a pattern of 16 chambers ⁇ 6 tiers, that is, 96 chambers in total.
  • a movable lid 13 for closing and opening each unloading port is disposed for each of the plurality of workpiece unloading ports 12 .
  • the movable lid 13 can cover the workpiece unloading port 12 to close the unloading port, or can move away from the workpiece unloading port 12 to open the unloading port as illustrated on the right side in FIG. 1 .
  • the workpiece unloading ports 12 illustrated on the left side in FIG. 1 correspond to the workpiece unloading ports 12 provided on the second, fourth, and sixth tiers
  • the workpiece unloading ports 12 illustrated on the right side in FIG. 1 correspond to workpiece unloading ports 12 provided on the first, third, and fifth tiers.
  • one workpiece unloading port 12 each is provided for each tier, and one movable lid 13 is provided for each of the workpiece unloading port 12 for each tier, and in addition, the workpiece unloading ports 12 are provided alternately in the tiers when viewing the solution treatment furnace 10 in the vertical direction.
  • Two quenching apparatuses 20 a and 20 b are installed for the solution treatment furnace 10 described above.
  • the quenching apparatus 20 b illustrated on the left side in FIG. 1 corresponds to the workpiece unloading ports 12 provided on the first, third, and fifth tiers
  • the quenching apparatus 20 a illustrated on the right side in FIG. 1 corresponds to workpiece unloading ports 12 provided on the second, fourth, and sixth tiers.
  • the quenching apparatuses 20 a and 20 b and the workpiece unloading ports 12 are arranged reversely to be opposite to each other in the right and left directions.
  • the quenching apparatuses 20 a and 20 b are provided with one quenching apparatus 20 b for the first, third, and fifth tiers illustrated on the left side in FIG. 2 , one quenching apparatus 20 a for the second, fourth, and sixth tiers is installed on the right side in FIG. 2 , and these two quenching apparatuses 20 a , 20 b are provided so as to be movable up and down independently in accordance with the positions of the workpiece unloading ports 12 .
  • the up and down movement of the quenching apparatuses 20 a and 20 b in the vertical direction is realized by moving means including a motor 25 and a chain 26 .
  • the quenching apparatuses 20 a and 20 b each have a workpiece storage unit 21 configured to store the workpiece W unloaded from the workpiece unloading port 12 of the solution treatment furnace 10 , and an air-cooling fan 22 is disposed at an upper position of the workpiece storage unit 21 to air-cool the workpiece W stored in the workpiece storage unit 21 .
  • two straightening plates 23 configured to straighten the air flow generated by the air-cooling fan 22 are disposed directly under the air-cooling fan 22 , and the workpiece storage unit 21 is provided with a shutter 24 capable of opening and closing at a position where the workpiece W is carried in and unloaded. Since air appropriately straightened for the workpiece W can be supplied, by actions of the air-cooling fan 22 , the straightening plates 23 and the shutter 24 , into the workpiece storage unit 21 in which the workpiece W carried out from the solution treatment furnace 10 is stored, quenching work based on the blast quenching under the uniform condition is enabled in each workpiece storage unit 21 .
  • the workpieces W can be unloaded and loaded into the workpiece storage chambers 11 of the solution treatment furnace 10 described above and also can be unloaded and loaded into the workpiece storage units 21 of the quenching apparatuses 20 a and 20 b by a multi-joint robot arm 30 disposed substantially in an intermediate portion between the two quenching apparatuses 20 a and 20 b .
  • a multi-joint robot arm 30 disposed substantially in an intermediate portion between the two quenching apparatuses 20 a and 20 b .
  • a main body portion 31 of the multi-joint robot arm 30 and an arm tip 32 of the multi-joint robot arm 30 are separately depicted, but originally, the main body portion 31 and the arm tip 32 are connected to each other, and the arm tip 32 indicated by the reference numerals 32 a to 32 d is an example of a position that the arm tip 32 can take.
  • the arm tip 32 of the multi-joint robot arm 30 is configured to be able to take a loading position indicated by a reference numeral 32 a for loading the workpieces W, an insertion position indicated by a reference numeral 32 b for inserting the workpieces W into the workpiece storage chambers 11 , an unloading position indicated by a reference numeral 32 c for unloading the workpieces W from the workpiece storage chambers 11 , and a carry-out position indicated by a reference numeral 32 d for carrying out the workpieces W.
  • the arm tip 32 is configured to be capable of unloading a workpiece W from the workpiece storage chamber 11 at the position indicated by reference numeral 32 c and inserting the workpiece W into the workpiece storage unit 21 of the quenching apparatus 20 a .
  • FIGS. 3 to 8 are schematic drawings for explaining the quenching method performed by using the quenching apparatus according to the present embodiment.
  • the multi-joint robot arm 30 illustrated in FIGS. 4 to 8 the main body portion 31 of the multi-joint robot arm 30 is omitted, and only the arm tip 32 of the multi-joint robot arm 30 is illustrated.
  • FIG. 3 shows a situation in which the arm tip 32 of the multi-joint robot arm 30 is about to scoop up and convey the workpiece W at the loading position.
  • the movable lids 13 of the workpiece unloading ports 12 on the right side in the drawing provided on the first, third, and fifth tiers of the solution treatment furnace 10 are opened, and the workpiece unloading ports 12 of the workpiece storage chambers 11 on the first, third and fifth tiers are opened.
  • the arm tip 32 of the multi-joint robot arm 30 conveys the workpieces W, and the workpieces W are loaded into the workpiece storage chambers 11 on the first, third, and fifth tiers. Thereafter, the arm tip 32 is retracted from the inside of the workpiece storage chamber 11 , the movable lid 13 is closed, and the solution treatment of the workpiece W by the solution treatment furnace 10 is performed.
  • the arm tip 32 of the multi-joint robot arm 30 conveys these workpieces W in the workpiece storage chambers 11 on the second, fourth and sixth tiers. Thereafter, the arm tip 32 is retracted from the inside of the workpiece storage chamber 11 , the movable lid 13 is closed, and the solution treatment of the workpiece W by the solution treatment furnace 10 is performed.
  • the solution-treated workpieces W are carried out from the solution treatment furnace 10 in sequence.
  • the movable lids 13 which close the workpiece unloading ports 12 of the workpiece storages chambers 11 on the first, third, and fifth tiers are opened, the workpiece unloading ports 12 of the workpiece storage chambers 11 of the first, third, and fifth tiers are opened, and the solution-treated workpieces W in the workpiece storage chamber 11 on the first, third, and fifth tiers are carried out of the furnace by the arm tip 32 .
  • the workpieces W carried out from the workpiece storage chambers 11 of the first, third, and fifth tiers are loaded into the workpiece storage unit 21 formed in the quenching apparatus 20 b for the first, third, and fifth tiers.
  • the quenching apparatus 20 b is controlled by a control device (not illustrated) to move to a height corresponding to the tier of the workpiece unloading port 12 , which is a destination of the workpiece W, and thus the arm tip 32 of the multi-joint robot arm 30 for transferring the workpiece W can transfer the workpiece W with almost no change in height.
  • the quenching apparatus 20 b and the workpiece unloading ports 12 are reversely arranged so as to be opposite to each other in the plan view, the transfer of the workpieces W from the workpiece unloading ports 12 to the quenching apparatus 20 b is smoothly performed by the multi-joint robot arm 30 .
  • air appropriately straightened for the workpiece W can be supplied, by actions of the air-cooling fan 22 , the straightening plates 23 and the shutter 24 illustrated in FIG. 2 , into the workpiece storage unit 21 in which the workpiece W carried out from the solution treatment furnace 10 is stored, which enables quenching work based on the blast quenching under the uniform condition in each workpiece storage unit 21 .
  • the same process as in FIG. 6 can be executed.
  • the movable lids 13 which close the workpiece unloading ports 12 of the workpiece storages chambers 11 on the second, fourth, and sixth tiers are opened, the workpiece unloading ports 12 of the workpiece storage chambers 11 of the second, fourth, and sixth tiers are opened, and the solution-treated workpieces W in the workpiece storage chamber 11 on the second, fourth, and sixth tiers are carried out of the furnace by the arm tip 32 .
  • the workpieces W carried out from the workpiece storage chambers 11 of the second, fourth, and sixth tiers are loaded into the workpiece storage unit 21 formed in the quenching apparatus 20 a for the second, fourth, and sixth tiers.
  • the quenching apparatus 20 a is controlled by a control device (not illustrated) to move to a height corresponding to the tier of the workpiece unloading port 12 , which is a destination of the workpiece W, and thus the arm tip 32 of the multi-joint robot arm 30 for transferring the workpiece W can transfer the workpiece W with almost no change in height.
  • the quenching apparatus 20 a and the workpiece unloading ports 12 are reversely arranged so as to be opposite to each other in the plan view, the transfer of the workpieces W from the workpiece unloading ports 12 to the quenching apparatus 20 a is smoothly performed by the multi-joint robot arm 30 .
  • air appropriately straightened for the workpiece W can be supplied, by actions of the air-cooling fan 22 , the straightening plates 23 and the shutter 24 illustrated in FIG. 2 , into the workpiece storage unit 21 in which the workpiece W carried out from the solution treatment furnace 10 is stored, which enables quenching work based on the blast quenching under the uniform condition in each workpiece storage unit 21 .
  • the workpieces W that have undergone the quenching work by blast quenching are carried out from the quenching apparatus 20 ( 20 a , 20 b ) in sequence.
  • the workpiece W that have undergone the quenching work by blast quenching in the workpiece storage unit 21 of the quenching apparatus 20 ( 20 a , 20 b ) are transferred to the carry-out position, the arm tip 32 of the multi-joint robot arm 30 is retracted from the workpiece W, thereby completing a series of quenching working steps.
  • the quenching apparatus 20 By executing the quenching method described above, it is possible to perform blast quenching for all the workpieces W within 10 seconds from unloading of the workpieces W from the solution treatment furnace 10 by the quenching apparatus 20 ( 20 a , 20 b ), and the blast quenching can be executed under substantially the same conditions for all the workpieces W. Therefore, according to the present embodiment, since no delay occurs in the quenching of the workpieces W and the uniform quenching treatment can be executed, it is also possible to stabilize the quality of the workpiece W.
  • the quenching apparatus 20 ( 20 a , 20 b ) of the embodiment described above performs air-cooled blast quenching
  • the quenching apparatus according to the embodiment of the invention can be used as a quenching apparatus of water-cooled or oil-cooled type.
  • the above solution treatment furnace 10 has a configuration in which the workpiece storage chambers are arranged in an annular shape
  • the invention is not limited thereto.
  • the invention is applicable to a so-called straight type solution treatment furnace, which is a solution treatment furnace of a type in which workpiece storage chambers (trays), on which the workpieces are placed, are moved linearly by belt conveyors arranged in parallel, and the invention is also applicable to a solution treatment furnace of other types.
  • the workpiece storage units 21 of the quenching apparatus 20 ( 20 a , 20 b ) move to positions in the proximity to the workpiece unloading ports 12 in the embodiment described above, the workpiece storage units 21 may be moved to a fixed distance from all the workpiece unloading ports 12 . It is essential to the invention to eliminate the variations in quenching treatment to the workpieces W due to the difference in the workpiece unloading ports 12 .
US16/851,899 2019-04-23 2020-04-17 Quenching apparatus and quenching method Pending US20200340089A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019-081578 2019-04-23
JP2019081578A JP7231471B2 (ja) 2019-04-23 2019-04-23 焼入装置および焼入方法

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CN113265523A (zh) * 2021-05-13 2021-08-17 湖北蓝华铝业有限公司 一种挤压成型过程中风冷淬火装置
CN115161446A (zh) * 2022-07-05 2022-10-11 德清集通实业有限公司 余热利用自动化控制淬火设备

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CN115161446A (zh) * 2022-07-05 2022-10-11 德清集通实业有限公司 余热利用自动化控制淬火设备

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CN111826502A (zh) 2020-10-27
JP2020176323A (ja) 2020-10-29
CN111826502B (zh) 2022-05-27

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