EP0747493A2 - Wärmebehandlungsanlage - Google Patents

Wärmebehandlungsanlage Download PDF

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Publication number
EP0747493A2
EP0747493A2 EP96108718A EP96108718A EP0747493A2 EP 0747493 A2 EP0747493 A2 EP 0747493A2 EP 96108718 A EP96108718 A EP 96108718A EP 96108718 A EP96108718 A EP 96108718A EP 0747493 A2 EP0747493 A2 EP 0747493A2
Authority
EP
European Patent Office
Prior art keywords
quenching
elevator
airlock
oven
cell
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP96108718A
Other languages
English (en)
French (fr)
Other versions
EP0747493A3 (de
Inventor
Spèrisen Thierry
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.)
Patherm SA
Original Assignee
Patherm SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Patherm SA filed Critical Patherm SA
Publication of EP0747493A2 publication Critical patent/EP0747493A2/de
Publication of EP0747493A3 publication Critical patent/EP0747493A3/de
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—Quenching devices
    • C21D1/63—Quenching devices for bath quenching
    • C21D1/64—Quenching devices for bath quenching with circulating liquids
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0062—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
    • C21D9/0006—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
    • 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
    • C21D9/0056—Furnaces through which the charge is moved in a horizontal straight path

Definitions

  • the present invention relates to a thermal treatment installation, intended, in particular, for the treatment of small and medium-sized parts.
  • Conventional heat treatment installations comprise one or more ovens which are associated with at least one quenching cell, these elements cooperating with transport means allowing the movement of the parts to be treated between the oven (s), and the cell.
  • the enclosure of these ovens is maintained at relatively high treatment temperatures, capable of ensuring the treatment of the parts which must, for this purpose, remain in this enclosure for a determined period of time in order to reach the desired treatment temperature. .
  • the present invention relates to a heat treatment installation comprising a quenching cell with a liquid medium constituted, for example, by water, polymers, oil or molten salts, media which make it possible to obtain speeds. relatively high quenching.
  • the movement of the parts inside such an installation can be done in different ways, either in “bulk”, that is to say by transporting the parts directly on a strip or on a carpet, or in loads or in batches, that is to say by the arrangement of the pieces inside transport bins or baskets.
  • the parts are transported according to the first configuration, that is to say in bulk directly on a strip or on a carpet, the parts are soaked in the liquid medium by dropping these parts directly into the quenching liquid at the through end of the furnace, at the end of the strip.
  • these parts to be treated constitute a set which is assimilated geometrically to a parallelepiped or cylindrical volume which can very seriously disturb and make the quenching conditions of each part unfavorable, considered in a way individual.
  • the quenching fluid heats up passing through this volume, so that the parts which are situated with respect to the direction of circulation of the fluid at the final or downstream end of the volume, are quenched by a hotter fluid, hence the significant risk of causing heterogeneous quenching conditions among these parts.
  • the immersion and the renewal of fresh liquids around the parts to be treated is not very rapid and there is a degradation of said liquid, depending on its nature, which can result in a deposit on the parts of materials, such as only tar, deposit which is formed by the decomposition of the quench liquid if it is an oil.
  • the object of the present invention is to respond to the drawbacks mentioned above by providing a heat treatment installation intended for the treatment of small and medium-sized parts, in which the quenching operation can be carried out so controlled by appropriately managing the speed and direction of movement of the quench liquid in relation to the parts, and in which any risk of injury or damage to these parts is avoided.
  • the heat treatment installation 1 comprises, in this embodiment, a furnace 2 in which all types of conventional heat treatment can be carried out.
  • the oven 2 is a passage or tunnel type oven, of conventional structure, in which the parts to be treated are arranged in lots or loads in tubs or baskets referenced 8 (which will be designated below by the term general of baskets).
  • the oven 2 is constituted by a thermally insulated carcass 2a which defines an enclosure or treatment cavity 2b inside which are arranged a plurality of heating elements 2c of which only one has been referenced here.
  • the heating elements 2c are constituted, for example, by a set of electrical resistances capable of heating the enclosure 2b by convection and / or by radiation and capable of bringing this enclosure to selected treatment temperatures. Resistors 2c are conventionally connected to a programmable power supply unit, not shown.
  • the processing temperatures used are common and are chosen from the conventional temperature ranges used in the heat treatment processes for metal parts.
  • the oven 2 is open at the end, at its two ends, by openings 2d and 2e, formed in the carcass 2a and respectively forming an inlet opening and an outlet opening of the oven 2.
  • the installation 1 further comprises an inlet E and an outlet S allowing the introduction and recovery of the baskets of pieces 8.
  • the inlet E and the outlet S of the oven 2 are shown in FIG. 1 by the through ends of the means transport T.
  • This installation 1 also comprises a quenching tank 6 which contains a quenching liquid L, such as water, a mixture of polymers, oil or molten salts.
  • a quenching liquid L such as water, a mixture of polymers, oil or molten salts.
  • This quenching tank is positioned, in part, directly under the airlock 4, the opening 4c of which is permanently immersed in the quenching liquid L.
  • the quench tank 6 is placed in line with the oven 2, these two elements extending longitudinally in the same direction and in particular in the treatment direction Dt which corresponds to the direction of movement of the charges in the installation.
  • the quenching tank 6 of this installation could, according to another embodiment not shown, be placed at 90 degrees relative to the longitudinal axis of the oven 2, in a so-called lateral position.
  • the batches of parts grouped in the baskets 8 move, inside the oven 2, in an essentially linear fashion, by means of the transport means T to reach the sealed transfer airlock 4, in the same horizontal geometric plane.
  • PH plane in which a load support plate 10 can come, arranged, in association with an elevator A, to enter the airlock 4 through its submerged opening 4c.
  • the means of transport T consist of a set of rollers shown here very schematically, pivoting for example in the carcass 2a of the oven 2.
  • the loads of baskets 8 can be moved by the rollers themselves, if they are driven by a motorization or by a chain. These loads can also be moved by a jack or other similar device or by one or more bands or belts (not shown).
  • the installation 1 also comprises an inlet channel or tunnel C1 which extends from the inlet E of the facility to the inlet opening 2d of the furnace 2.
  • the channel or tunnel C1 is tightly fixed to the carcass 2a of the oven 2 and this channel is thermally insulated and not heated. It communicates directly with the inlet opening 2d of the furnace 2 to allow the introduction of the baskets of parts 8 therein.
  • the channel C1 is provided at its entrance with an unsealed door P1, which can be raised and lowered by conventional mechanical means, not shown here.
  • the oven is also provided at its outlet S, directly at its outlet opening 2e, with a door P2 of the same type, which can be raised and lowered by an opening and closing mechanism M shown here very schematically .
  • This mechanism M is for example constituted by a jack V mounted directly on the sealed transfer airlock 4 and whose rod Tv is mechanically connected, in a conventional manner, to the door P2.
  • the doors P1 and P2 can be controlled in opening and closing independently.
  • the sealed transfer airlock 4 is constituted by a sheet metal carcass which is fixed directly to the carcass 2a of the oven 2 by conventional mechanical fixing means, capable of sealing the connection between the two carcasses of the oven 2 and the airlock 4 respectively. .
  • This transfer airlock 4 is also closed on all its sides, as can be seen more particularly in FIGS. 1, 5 and 6.
  • the airlock 4 comprises two characteristic housings 4a and 4b.
  • the housing 4a is designed to receive the load support plate 10 of the elevator A, as well as one of the baskets 8 placed on this plate.
  • the housing 4b is, for its part, designed to receive the door P2 as well as the control rod Tv of the jack V.
  • the sealed transfer airlock 4 opens, through its opening 4c, downwards (in the position of the installation 1 as shown in FIGS. 1 to 4) in the direction of the quenching tank 6, directly into the quenching liquid L.
  • the opening 4c therefore allows the airlock 4 to communicate with the quench tank 6 to ensure the transfer of the charges 8 from the oven 2 to the tank 6 and also allows the quench liquid L to circulate inside this airlock the wall of which is immersed in this liquid over a height H1.
  • the elevator A comprises a guide column 12 which extends vertically substantially over the entire height of the quench tank 6, inside the latter, next to the airlock 4.
  • This column 12 which is largely immersed in the liquid L is arranged to be able to move in translation inside the tank 6, forwards and backwards along a direction of linear movement represented by the arrow Dn.
  • this direction of movement Dn is parallel to the direction of movement Dt of the loads or batches of parts inside the treatment oven 2 and inside the housing 4a of the airlock 4, at the outlet S of the oven 2
  • the column 12 is for this purpose guided at its base by a guide device 14 which is constituted in this example by a roller 14a which can move in a longitudinal rail 14b fixed to the bottom of the quench tank 6.
  • the column 12 is also associated with drive means 15 capable of moving it in translation, in the direction Dn.
  • These drive means 15 are formed by a motor 16, placed outside the tank 6, integral with the column 12 and controlling a toothed pinion 18 which meshes with a straight rack 20 mounted outside the quench tank 6 , on one of its longitudinal walls, parallel to the oven 2.
  • the rail 14b and the rack 20 can also be oriented at 90 degrees relative to the position shown , that is to say orthogonally to the direction Dt of displacement of the charges in the furnace 2.
  • the elevator A further comprises an elevator arm 22 which can be vertically translated to bring the load support plate 10 in height and move a basket of parts 8, in respectively high and low positions, as shown in FIGS. 1 to 6 .
  • the load support plate 10 rests on the lifting arm 22 and is fixed thereto by conventional means.
  • the arm 22 is engaged in a cantilever inside the guide column 12 which supports it and the guide in its vertical movements of ascent and descent.
  • Column 12 has, in top view (FIG. 6), a U shape which is open in the direction of the lifting arm 22 and in the direction of the sealed transfer airlock 4.
  • the U shape of the column 12 which, in this example, is produced by two profiles welded to a base plate (not referenced), constitutes a housing 12a in which the lifting arm 22 is received and guided. lifting arm 22 is engaged in guide rails 12b and 12c integral with the column 12 and branches (not referenced) of its U shape.
  • the elevator A comprises a reduction motor 24 (not shown in FIG. 6) which comprises a drive pinion 26 engaged with a chain 28 capable of causing the vertical movement of the lifting arm 22 which is fixedly connected at a point in chain 28, not shown.
  • the two motors 16 and 24 are electrically connected to a control CM constituted, for example, by a programmable automaton which can control the sequences of movement of the column 12 and of the lifting arm 22.
  • a control CM constituted, for example, by a programmable automaton which can control the sequences of movement of the column 12 and of the lifting arm 22.
  • This device for vertical displacement of the lifting arm 22 could, in another embodiment not shown, be constituted by a jack integral with the column 12 and comprising a rod fixed to the lifting arm 22.
  • the assembly formed by the arm 22 and the support plate 10 constitutes a carriage ensuring the vertical displacement of the load to be quenched, on the one hand, from the outlet S of the oven as far as the tank 6, and more particularly as far as the device G for guiding the flow of the quenching liquid L, and on the other hand, from the tank 6 to the outside of the latter, in the open air.
  • the device G is arranged to guide a flow of the quenching liquid L inside the quench tank 6.
  • This flow guiding device G consists by a mantel in the form of a chimney made up of three elements formed by two skirts M1 and M2 respectively fixed and mobile and by a pressure / vacuum box M3.
  • These three elements M1, M2 and M3 consist of sheet metal elements, here of square section, the longitudinal axis of which extends vertically, parallel to the axis of the column 12 of the elevator A.
  • These three elements M1, M2 and M3 are hollow and they have, at least in their junction zones, interior sections (not referenced) substantially of the same dimensions.
  • a guided flow Fg can therefore flow in and through these three elements M1, M2 and M3.
  • the fixed skirts M1 and mobile M2 of the mantle M are arranged to receive part of the lifting arm 22, the load support plate 10 as well as the basket 8 carried by the latter.
  • the first skirt M1 of the box M which is the upper element, in accordance with the representation of the three elements M1, M2 and M3 in the figures, is completely immersed in the liquid L and it partially penetrates into the airlock 4, substantially coaxial with it.
  • This upper skirt M1 is fixedly linked to the transfer airlock 4 by means of connecting lugs 30, only one of which has been referenced here.
  • this upper skirt M1 is disposed, in the quenching tank, at a height such that its upper edge is located, relative to the level of the quenching liquid, at a height H2 sufficient to allow the passage of the quenching liquid above said edge. This ensures the maintenance of the flow Fg of liquid in the mantle M, around the charge, when the latter is immersed in the mantle M.
  • the height H2 which is between 50 and 150 mm, is however chosen to be sufficiently low so that the upper edge of the skirt M1 is very close to the level of the quenching liquid L, in order to be able to position the load as quickly as possible, during the quenching, in an area of the tank where the flow is guided, area where the parameters of speed and direction of the liquid can be controlled.
  • the height H2 is chosen to be less than the height H1 which is the height of immersion of the airlock 4 in the quenching liquid L.
  • the height H1 is between 250 and 300 mm.
  • the second skirt M2 which is the intermediate element of the mantle M, disposed between the other two M1 and M2, is mounted integral with the movable column 12.
  • This movable intermediate skirt M2 is therefore mechanically connected to the column 12 of the elevator A by means of two fixing elements or panels 34 and 36 which extend respectively on either side of the housing 12a of the column 12 , in the direction of the skirt M2, and allow passage to the lifting arm 22.
  • the mobile M2 and fixed M1 skirts respectively have two vertical longitudinal grooves or slots 38 and 40 allowing the lifting arm 22 to pass through the mantle M.
  • the mantle M comprises a fixed box M3 for pressurizing or depressurizing the liquid L, this box M3 which is integral with the bottom of the quench tank 6 being disposed in the lower position relative to the other elements M1 and M2.
  • This box M3 is connected to a channel 42 which opens into it and which is connected to a pump or to a system for circulating the quenching fluid, referenced 44, of conventional design.
  • the load support plate 10 comprises a set of rollers 10a which are mounted to rotate freely on this plate and which extend, just like the rollers of the means of transport T, perpendicular to the direction of movement Dt of the baskets 8 in the oven 2.
  • the parts p (shown in the figures very schematically) have been arranged inside the baskets 8 to constitute separate batches which form a volume V (FIG. 1) of parts the height H of which is advantageously chosen to be much lower than the other dimensions of the volume.
  • volume V The other dimensions of volume V are given here (FIG. 6) by the size of the sides of this volume, quantities referenced L1 (width) and L2 (length) respectively.
  • the second embodiment of the invention shown in Figure 7 differs from the embodiment which has just been described in that the column here referenced 13 no longer moves in translation, but in rotation, about its vertical axis .
  • the column 13 is mounted for rotation between two bearings 13a and 13b respectively secured to the airlock 4 and to the bottom of the tank 6.
  • each basket 8 in which parts p to be treated have been placed is introduced into the enclosure 2b of the oven 2 via the inlet channel C1.
  • Each basket 8 is thus thus moved inside the furnace 2 by means of displacement means T until the outlet opening 2e.
  • the load support plate 10 being, in a first step (FIGS. 1, 5, 6 and 7) placed in a first high so-called transfer position by the elevator A, in the housing 4a of the airlock 4, the displacement means T of the installation 1 move the basket 8 to be dipped on this tray 10 by pushing this basket 8 on the rollers 10a.
  • the basket 8 which has undergone the treatment operation and which will undergo the quenching operation is thus placed on standby in the sealed transfer airlock 4.
  • the actuation of the pump 44 causes the creation of a rising or falling guided flow Fg (FIG. 5) in the mantle M.
  • a second step (FIG. 2), the load support plate 10 and the tank 8 are lowered in the quench tank 6 by correspondingly actuating the elevator A and more particularly the reduction motor 24 which drives the chain 26 and causes lowering the arm 22.
  • the assembly consisting of the load support plate 10 and the tank 8 is immersed in the quenching liquid L, and immediately plunges into the first fixed skirt M1 then then into the second movable skirt M2 of the mantle M where is created and confined the guided flow Fg.
  • the circulating means 44 continue to be actuated by suction or discharge to thereby create inside this recirculation enclosure M a pressure or a vacuum conditioning the direction of movement of the liquid L around the charge.
  • the elevator A having brought the platform 10-basket 8 assembly into its lowest so-called immersion position, the column 12 (or 13) is then, in a third step, moved by appropriate actuation of the motor 16.
  • the elevator A (namely the column 12 (or 13), the arm 22 and the plate 10) as well as the movable skirt M2 which is integral with the latter are brought together to translate ( Figures 3 and 6) or to turn ( Figure 7) to move outside of the transfer airlock 4 and to release the load in a free, uncovered area, of the bin 6, referenced Z.
  • the lifting arm 22 of the elevator A can be raised (FIG. 4) in a second high transfer position by appropriate actuation of the motor 24 and the associated chain 28, to take out the basket 8 which has been soaked in the quenching liquid L and allow it to be taken up by a handling device, here not shown.
  • rollers 10a of the support 10 can be linked together by a chain or any other drive means, not shown.
  • These rollers 10a can therefore come into the plane of the rollers of the transport means T and they can be associated on a first side with a drive wheel intended to come into contact with the last roller of the transport means T to be driven in rotation by these means of transport.
  • This wheel being able to be linked by a chain or any other means to the rollers 10a, this wheel can then ensure the rotation drive of the rollers 10a when the support 10 is in the high position, as shown in FIG. 1.
  • the load After the load has been raised by the support 10, and it is in the open air (Figure 4), it can be taken up either by a lifting device or by an external drive device (not shown) also formed of a group of rollers or a strip.
  • a second wheel opposite to the first wheel mentioned above, can be provided on the other side of the support 10 for engaging with this strip and for driving the rollers 10a of the support 10 in order to allow the release of the load on the strip (to the right in the figure).
  • retractable mechanical stops can be provided on each side of the support 10 to ensure the precise positioning of the load on this support.
  • stops can be constituted for example by vertical plates which are, on the one hand, mounted on either side of the support 10 on compression springs keeping them in the high position and which are, on the other hand, associated with control members, such as a finger or an orthogonal plate, which can bear under the rollers of the drive means T, during the movements of raising the elevator A, in order to control the lowering of the stop plate corresponding and allow the passage of the load.
  • These stops can, according to yet another embodiment, be constituted by the members which support the wheels on either side of the support 10 if these members are rotatably mounted on this support and can be released by the action of a elastic element when the wheels are not or no longer in contact with the means of transport.

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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)
EP96108718A 1995-06-07 1996-05-31 Wärmebehandlungsanlage Ceased EP0747493A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1669/95 1995-06-07
CH166995 1995-06-07

Publications (2)

Publication Number Publication Date
EP0747493A2 true EP0747493A2 (de) 1996-12-11
EP0747493A3 EP0747493A3 (de) 1996-12-18

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EP96108718A Ceased EP0747493A3 (de) 1995-06-07 1996-05-31 Wärmebehandlungsanlage

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1531284A1 (de) * 2003-11-14 2005-05-18 Robert Bosch Gmbh Metallisches Druckband, Querelement und Herstellungsverfahren
CN104141036A (zh) * 2013-11-30 2014-11-12 国家电网公司 杆类零件淬火工装
CN108486326A (zh) * 2018-04-11 2018-09-04 东莞市联洲知识产权运营管理有限公司 一种高低可调热处理淬火槽装置
CN111115144A (zh) * 2020-01-23 2020-05-08 爱协林热处理系统(北京)有限公司 具有工序转移自动运输车的工件热处理自动生产线
CN113151647A (zh) * 2021-03-14 2021-07-23 郑州大学 一种用于金属热处理淬火的设备
CN118166184A (zh) * 2024-02-22 2024-06-11 兴化市精密铸钢有限公司 一种铸钢件热处理装置
CN120905492A (zh) * 2025-10-10 2025-11-07 苏州精科裕精密模架有限公司 一种用于模架加工的自动化热处理装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3414249A (en) * 1966-06-10 1968-12-03 Pacific Scientific Co Fluid treating transfer mechanism
US3684263A (en) * 1970-02-12 1972-08-15 Sola Basic Ind Inc Vacuum oil quench furnace
JPS53147618A (en) * 1977-05-30 1978-12-22 Sumitomo Metal Ind Ltd Method of cooling hot rolled steel material
JPS60138065A (ja) * 1983-12-27 1985-07-22 Chugai Ro Kogyo Kaisha Ltd ガス浸炭焼入方法およびその連続式ガス浸炭焼入設備
US5016860A (en) * 1990-01-31 1991-05-21 Holcroft Inc. "No-nick" part-handling apparatus and method
US5447293A (en) * 1994-07-22 1995-09-05 Clarke; Beresford N. Method and apparatus for quenching heat treated objects

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1531284A1 (de) * 2003-11-14 2005-05-18 Robert Bosch Gmbh Metallisches Druckband, Querelement und Herstellungsverfahren
CN100424379C (zh) * 2003-11-14 2008-10-08 罗伯特·博施有限公司 金属压带和用于该金属压带的横向元件
CN104141036A (zh) * 2013-11-30 2014-11-12 国家电网公司 杆类零件淬火工装
CN104141036B (zh) * 2013-11-30 2016-07-06 国家电网公司 杆类零件淬火工装
CN108486326A (zh) * 2018-04-11 2018-09-04 东莞市联洲知识产权运营管理有限公司 一种高低可调热处理淬火槽装置
CN111115144A (zh) * 2020-01-23 2020-05-08 爱协林热处理系统(北京)有限公司 具有工序转移自动运输车的工件热处理自动生产线
CN113151647A (zh) * 2021-03-14 2021-07-23 郑州大学 一种用于金属热处理淬火的设备
CN118166184A (zh) * 2024-02-22 2024-06-11 兴化市精密铸钢有限公司 一种铸钢件热处理装置
CN120905492A (zh) * 2025-10-10 2025-11-07 苏州精科裕精密模架有限公司 一种用于模架加工的自动化热处理装置

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