CN107619915A - A kind of automatic control system for alloy spring steel heat treatment - Google Patents
A kind of automatic control system for alloy spring steel heat treatment Download PDFInfo
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- CN107619915A CN107619915A CN201711020115.7A CN201711020115A CN107619915A CN 107619915 A CN107619915 A CN 107619915A CN 201711020115 A CN201711020115 A CN 201711020115A CN 107619915 A CN107619915 A CN 107619915A
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Abstract
The present invention provides a kind of automatic control system for alloy spring steel heat treatment, skip car (1) including being sequentially connected setting, heating furnace (2), quenching tank (3), tempering bath (4), cleaning device (5) and lower truck (6), the first hoistable platform (34) is provided between heating furnace (2) and quenching tank (3), the second hoistable platform (43) is provided between quenching tank (3) and tempering bath (4), and for controlling skip car (1), lower truck (6), first hoistable platform (34), the motion of second hoistable platform (43), for controlling heating furnace (2), the automatic control system (7) of the temperature of quenching tank (3) and tempering bath (4).A kind of automatic control system for alloy spring steel heat treatment of the present invention, automatically adjusting for the automatic switchover between automatic loading/unloading, each processing step and technological parameter can be realized, realizes the Automated condtrol of whole alloy spring steel Equipment for Heating Processing.
Description
Technical field
The present invention relates to technical field of metal heat treatment, and in particular to a kind of automatic control for alloy spring steel heat treatment
System processed.
Background technology
Alloy spring steel is the steel grade for manufacturing spring or other elastic parts, has high yield point and Qu Qiang
Than, elastic limit, anti-fatigue performance, there is certain plasticity and toughness, certain quenching degree, be not easy decarburization and be not easy to overheat,
To ensure that spring has high intensity and enough toughness, the mode of generally use quenching+average tempering is heat-treated to it.
In order to lift the performance of metal material and service life, it usually needs the side to metal material using heating and cooling
Method is handled, and this process is the heat treatment of metal material.In traditional Technology for Heating Processing, mostly using oil, water or sky
For gas as hardening media, its cooling velocity is slow, and quenching degree is poor, easily produces troostite, and then influence the number turnover of martensite.
Application No. 201220768953.4 discloses a kind of pre-treatment production line, including fixed feeding platform, transmission equipment,
Heating furnace, quenching refrigerating device, high tempering stove, low-temp temper furnace, air cooler, discharging platform and upper computer control system, and
Linearly arrange.
Application No. 201410672281.5 discloses a kind of martensite of high chromium Bearing Steel Parts, bainite isothermal salt bath
Quenching Production Line, including unit, the unit include be arranged in order the main heating furnace of loading platform, preheating furnace, bell-type,
Quenching salt tank, isothermal salt bath, air-cooled, biliquid cleaning machine, discharging platform, in addition to one be unit operate workpiece turn material
Truck；Described preheating furnace, the main heating furnace of bell-type can be passed through protection gas and enriched gas；Isothermal salt bath waits thermohaline including multistation
Groove.
Above-mentioned prior heat treatment equipment uses simple shaft furnace and box stove heat mostly, and this Equipment for Heating Processing is most
By manual operation, although simple to operate, lack continuity, and quality is not easy to ensure, can run into such as workpiece oxidation seriously, group
The problems such as transformation efficiency is low, and hardness is uneven is knitted, while equipment is high using limitation, consumes energy and seriously polluted.
The content of the invention
It is an object of the invention to solve above-mentioned Equipment for Heating Processing commonly used in the prior art to rely on manual operation mostly, though
It is so simple to operate, but lack continuity, and quality is not easy to ensure, can run into such as workpiece oxidation seriously, structural transformation efficiency is low, firmly
Spend the problems such as uneven, there is provided a kind of automatic control system for alloy spring steel heat treatment, can realize automatic loading/unloading,
Automatically adjusting for automatic switchover and technological parameter between each processing step, realizes whole alloy spring steel Equipment for Heating Processing
Automated condtrol.
The present invention provides a kind of automatic control system for alloy spring steel heat treatment, including：
Skip car：It is arranged on ground rail and can be moved along the direction of track, for automatic in process of production
Charging；
Heating furnace：It is connected with skip car, for being heated to material；
Quenching tank：One end is provided with the first hoistable platform being connected with heating furnace, for holding salt bath medium and to by adding
Material after heat carries out Quenching Treatment, and material can move with the first hoistable platform in salt bath medium；
Tempering bath：One end is provided with the second hoistable platform being connected with quenching tank, for the material after Quenching Treatment
Carry out temper；
Cleaning device：One end is connected with tempering bath, for the material after temper to be cooled down, cleaned and dried
It is dry；
Lower truck：Be arranged on ground rail and can be moved along the direction of track, is connected with cleaning device, for
Automatic material returning in production process；
Automatic control system：Including the gear motor being arranged on skip car and lower truck, the first hoistable platform is arranged on
With the motor on the second hoistable platform, the first temperature control device being arranged in heating furnace, be arranged in quenching tank second
Temperature control device, the 3rd temperature control device being arranged in tempering bath and for gear motor, motor, the first temperature control device,
Second temperature control device, the 3rd temperature control device send the middle control machine of instruction.
The first hoistable platform that can move vertically is set between heating furnace and quenching tank and in quenching tank and tempering bath
Between the second hoistable platform that can move vertically is set so that material can be automatic between heating furnace, quenching tank, tempering bath
Operation, avoid labor intensity height, the high equivalent risk of potential safety hazard that manual operation is brought；While the first hoistable platform and second liter
Drop platform is vertically arranged, and makes the structure of whole Equipment for Heating Processing compacter.The middle control machine of automatic control system can be according to pre-
If parameter according to heat treatment carry out different phase respectively to gear motor, motor, the first temperature control device, the second temperature control
Device, the 3rd temperature control device send instruction so that whole heat treatment process realizes automation.
A kind of automatic control system for alloy spring steel heat treatment of the present invention, it is preferred that, feeding
Car and lower truck include car body, are arranged on the material frame that car body upper surface is used to place material, are arranged in material frame and are used to limit
Determine the locating slot of material movement and be arranged on the drive of vehicle bottom.Skip car and lower truck can be according to the works of program setting
The skill cycle carries out automatic feed and the material returned.
A kind of automatic control system for alloy spring steel heat treatment of the present invention, it is preferred that, heating
Stove includes body of heater on the ground is fixedly mounted, and is arranged on the preceding fire door that body of heater side is connected with skip car, it is another to be arranged on body of heater
The rear fire door that side is connected with the first hoistable platform, the heating chamber being arranged in body of heater, the club transmission being arranged in heating chamber
System, the heating rod being arranged on below club transmission system, it is arranged on heating furnace heat-insulation layer between body of heater and heating chamber and sets
Put the exhaust-gas treatment component above body of heater and be arranged on the exhaust manifolds on body of heater below rear fire door.Set in heating furnace
The visual working condition of roller rod transmission system realizes the transmission of both forward and reverse directions and the conversion of friction speed, makes the heating of material more equal
It is even.
A kind of automatic control system for alloy spring steel heat treatment of the present invention, it is preferred that, heating
Stove heat-insulation layer is prepared by alumina-silicate ceramic fibre material.
A kind of automatic control system for alloy spring steel heat treatment of the present invention, it is preferred that, quenching
Groove includes quenching slot shell on the ground is fixedly mounted, and is arranged on the first salt bath isothermobath of quenching tank enclosure interior, sets
Quenching tank heat-insulation layer between quenching slot shell and the first salt bath isothermobath, it is arranged on above the first salt bath isothermobath and heating
The first connected hoistable platform of stove, the quenching tank heating system being arranged on above the first salt bath isothermobath, is arranged on quenching tank and adds
Pipe heat exchanger below hot systems, the air-cooler being arranged on above quenching tank heating system, it is arranged on the first salt bath isothermobath
The quenching tank cooling system of lower section and the agitating device being arranged in the first salt bath isothermobath.Agitating device can be according to workpiece shapes
And technological requirement control mixing speed, meet after quenching to metallographic structure number turnover, the requirement of hardness.
A kind of automatic control system for alloy spring steel heat treatment of the present invention, it is preferred that, tempering
Groove includes the tempering slot shell that fixes on the ground, is arranged on the second salt bath isothermobath of tempering bath enclosure interior, is arranged on the
The second hoistable platform being connected on two salt bath isothermobaths with quenching tank, it is arranged between tempering slot shell and the second salt bath isothermobath
Tempering bath heat-insulation layer and the tempering bath heating system that is arranged on above the second salt bath isothermobath.
A kind of automatic control system for alloy spring steel heat treatment of the present invention, it is preferred that, cleaning
Device includes support, is arranged on the sink being connected on support with tempering bath, the spray equipment being arranged on above sink, sets
Gas extraction system above spray equipment, it is arranged on support and drying tank that sink is connected and is arranged on above drying tank
Induced draught system.
The present invention in use, comprises the following steps：
S1, startup：After the characteristic of heat-treated material as needed selects corresponding control parameter, start annealing device fortune
OK；
S2, charging：Middle control machine sends instruction to the gear motor of skip car, and material is transported to heating by control skip car
Stove；
S3, heating：Material is heated in heating furnace, middle control machine controls temperature to be heated to 810 by the first temperature control device
~870 DEG C, high pure nitrogen and enriched gas are passed through in heating process；
S4, quenching：After heating, middle control machine sends instruction to the motor of the first hoistable platform, and the first lifting is flat
Material is brought into rapidly in the first salt bath isothermobath and quenched by platform, at the same middle control machine by the second temperature control device by the first salt bath isothermal
The temperature control of groove keeps 5~15min of cool time, while salt bath is stirred in quenching process at 180~220 DEG C；
S5, tempering：After by step S4 Quenching Treatments, middle control machine is sent to the motor of the second hoistable platform to be referred to
Order, material transmission to the second salt bath isothermobath is carried out isothermal tempering processing by the second hoistable platform, while middle control machine passes through second
For temperature control device by the temperature control of the second salt bath isothermobath at 220~300 DEG C, soaking time is 6~8h；
S6, cooling：After by step S5 tempers, middle control machine is sent to the motor of the second hoistable platform to be referred to
Order, the second hoistable platform drives material to rise, and is transported to cleaning device, is cooled down by air；
S7, cleaning：Material after supercooling is cleaned by spray equipment using hot water spray, and water temperature is 75~85 DEG C；
S8, drying：Material after cleaning is transported on drying tank and dried, the lower truck material returned is sent to after drying,
Finished product after being heat-treated.
Annealing device provided by the invention only has skip car, heating furnace, quenching tank, tempering bath, cleaning device, lower truck
Formed with automatic control system, simplify current thermal treatment equipment, at the same between heating furnace and quenching tank and quenching tank with time
The first hoistable platform and the second hoistable platform of vertical movement are provided between fiery groove, makes the overall arrangement of equipment compacter.Together
When automatic control system middle control machine can according to default parameter according to heat treatment carry out different phase respectively to gear horse
Reach, motor, the first temperature control device, the second temperature control device, the 3rd temperature control device send instruction so that whole heat treatment process
Realize automation.
Brief description of the drawings
Fig. 1 is a kind of automatic control system front view for alloy spring steel heat treatment；
Fig. 2 is a kind of automatic control system top view for alloy spring steel heat treatment；
Fig. 3 is to be a kind of for the automatic control system skip car of alloy spring steel heat treatment and the front view of lower truck；
Fig. 4 is a kind of front view of automatic control system heating furnace for alloy spring steel heat treatment；
Fig. 5 is a kind of front view of automatic control system quenching tank for alloy spring steel heat treatment；
Fig. 6 is a kind of front view of automatic control system tempering bath for alloy spring steel heat treatment；
Fig. 7 is a kind of front view of automatic control system cleaning device for alloy spring steel heat treatment；
Fig. 8 is that a kind of automatic control system automatic control system for alloy spring steel heat treatment forms figure；
Fig. 9 is a kind of annealing device application method flow chart for alloy spring steel；
Figure 10 is the metallographic structure figure of the alloy spring steel after Overheating Treatment in embodiment 1.
Reference：
1st, skip car；11st, car body；12nd, material frame；13rd, locating slot；14th, drive；2nd, heating furnace；21st, body of heater；22nd, it is preceding
Fire door；23rd, rear fire door；24th, heating chamber；25th, club transmission system；26th, heating rod；27th, heating furnace heat-insulation layer；28th, at waste gas
Manage component；29th, exhaust manifolds；3rd, quenching tank；31st, slot shell is quenched；32nd, the first salt bath isothermobath；33rd, quenching tank heat-insulation layer；
34th, the first hoistable platform；35th, quenching tank heating system；36th, pipe heat exchanger；37th, air-cooler；38th, quenching tank cooling system；
39th, quenching tank agitating device；4th, tempering bath；41st, it is tempered slot shell；42nd, the second salt bath isothermobath；43rd, the second hoistable platform；
44th, tempering bath heat-insulation layer；45th, tempering bath agitating device；5th, cleaning device；51st, support；52nd, sink；53rd, spray equipment；
54th, gas extraction system；55th, drying tank；56th, induced draught system；6th, lower truck；7th, automatic control system；71st, gear motor；72nd, drive
Motor；73rd, the first temperature control device；74th, the second temperature control device；75th, the 3rd temperature control device；76th, middle control machine.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.
Embodiment 1
As shown in Fig. 1~2, the present invention provides a kind of annealing device for alloy spring steel, including：
Skip car 1：It is arranged on ground rail and can be moved along the direction of track, for automatic in process of production
Charging；As shown in figure 3, including car body 11, the material frame 12 that the upper surface of car body 11 is used to place material is arranged on, is arranged on material
It is used to limit the locating slot 13 of material movement in frame 12 and is arranged on the drive 14 of the bottom of car body 11；
Heating furnace 2：It is connected with skip car, for being heated to material；As shown in figure 4, including being fixedly mounted on ground
On body of heater 21, be arranged on the preceding fire door 22 that the side of body of heater 21 is connected with skip car 1, be arranged on the opposite side of body of heater 21 and first liter
The connected rear fire door 23 of platform 34, the heating chamber 24 being arranged in body of heater 21, the club power train being arranged in heating chamber 24 drop
System 25, the heating rod 26 of the lower section of club transmission system 25 is arranged on, the heating furnace being arranged between body of heater 21 and heating chamber 24 is protected
Warm layer 27 and the exhaust-gas treatment component 28 and the row being arranged on body of heater 21 below rear fire door 22 for being arranged on the top of body of heater 21
Airway 29；
Quenching tank 3：One end is provided with the first hoistable platform 34 being connected with heating furnace 2, for holding salt bath medium and to warp
The material crossed after heating carries out Quenching Treatment, and material can move with the first hoistable platform 34 in salt bath medium；Such as Fig. 5 institutes
Show, including quenching slot shell 31 on the ground is fixedly mounted, the first salt bath isothermobath being arranged on inside quenching slot shell 31
32, the quenching tank heat-insulation layer 33 being arranged between the quenching salt bath isothermobath 32 of slot shell 31 and first, it is arranged on first salt bath etc.
The first hoistable platform 34 that the warm top of groove 32 is connected with heating furnace 2, the quenching tank for being arranged on the top of the first salt bath isothermobath 32 add
Hot systems 35, the pipe heat exchanger 36 of the lower section of quenching tank heating system 35 is arranged on, is arranged on the top of quenching tank heating system 34
Air-cooler 37, be arranged on the quenching tank cooling system 38 of the lower section of the first salt bath isothermobath 32 and be arranged on the first salt bath isothermobath
Agitating device 39 in 32；
Tempering bath 4：One end is provided with the second hoistable platform 43 being connected with quenching tank 3, for after Quenching Treatment
Material carries out temper；As shown in fig. 6, including the tempering slot shell 41 fixed on the ground, tempering slot shell 41 is arranged on
The second internal salt bath isothermobath 42, is arranged on the second hoistable platform 43 being connected on the second salt bath isothermobath 42 with quenching tank 3,
It is arranged on the tempering bath heat-insulation layer 44 being tempered between the salt bath isothermobath 42 of slot shell 41 and second and is arranged on the second salt bath isothermal
The agitating device 45 of the top of groove 42；
Cleaning device 5：One end is connected with tempering bath 4, for being cooled down, cleaned to the material after temper and
Drying；As shown in fig. 7, comprises support 51, is arranged on the sink 52 being connected on support 51 with tempering bath 4, is arranged on sink
The spray equipment 53 of 52 tops, is arranged on the gas extraction system 54 of the top of spray equipment 53, is arranged on support 51 and sink 52
Connected drying tank 55 and the induced draught system 56 being arranged on above drying tank 55；
Lower truck 6：It is arranged on ground rail and can be moved along the direction of track, is connected with cleaning device 5, is used for
Automatic material returning in process of production；As shown in figure 3, including car body 11, the thing that the upper surface of car body 11 is used to place material is arranged on
Material frame 12, it is arranged in material frame 12 and is used to limit the locating slot 13 of material movement and is arranged on the drive of the bottom of car body 11
14；
Automatic control system 7：As shown in figure 8, including the gear motor 71 being arranged on skip car 1 and lower truck 6, set
Motor 72 on the first hoistable platform 34 and the second hoistable platform 43, the first temperature control device being arranged in heating furnace 2
73, the second temperature control device 74 being arranged in quenching tank 3, the 3rd temperature control device 75 being arranged in tempering bath 4 and for tooth
Wheel motor 71, motor 72, the first temperature control device 73, the second temperature control device 74, the 3rd temperature control device 75 are sent in instruction
Control machine 76.
The present embodiment in use, as shown in figure 9, comprising the following steps：
S1, startup：After the characteristic of heat-treated material as needed selects corresponding control parameter, start annealing device fortune
OK；
S2, charging：Middle control machine 76 sends instruction to the gear motor 71 of skip car 1, and material is transported to by control skip car 1
Heating furnace 2；
S3, heating：Material is heated in heating furnace 2, middle control machine 76 controls temperature to heat by the first temperature control device 73
To 810~870 DEG C, high pure nitrogen and enriched gas are passed through in heating process；
S4, quenching：After heating, middle control machine 76 sends to the motor 72 of the first hoistable platform 34 and instructed, and first
Material is brought into rapidly in the first salt bath isothermobath 32 and quenched by hoistable platform 34, while middle control machine 76 passes through the second temperature control device 74
By the temperature control of the first salt bath isothermobath 32 at 180~220 DEG C, 5~15min of cool time is kept, while in quenching process
In salt bath is stirred；
S5, tempering：After by step S4 Quenching Treatments, motor 72 of the middle control machine 76 to the second hoistable platform 43
Instruction is sent, material transmission to the second salt bath isothermobath 42 is carried out isothermal tempering processing, while middle control by the second hoistable platform 43
Machine 76 by the second temperature control device 74 by the temperature control of the second salt bath isothermobath 42 at 220~300 DEG C, soaking time is 6~
8h；
S6, cooling：After by step S5 tempers, motor 72 of the middle control machine 76 to the second hoistable platform 43
Instruction is sent, the second hoistable platform 43 drives material to rise, and is transported to cleaning device (5), is cooled down by air；
S7, cleaning：Material after supercooling is transported to cleaning device 5, is cleaned using hot water spray, and water temperature is 75~85
℃；
S8, drying：Material after cleaning is transported on drying tank 55 and dried, lower truck 6 is sent to after drying and is moved back
Material, you can the finished product after being heat-treated.
The finished product that the present embodiment obtains is the alloy bullet of tempered martensite+Lower Bainite Duplex Structure with higher hardness
Spring steel, its metallographic structure figure are as shown in Figure 10.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (7)
- A kind of 1. automatic control system for alloy spring steel heat treatment, it is characterised in that：IncludingSkip car (1)：It is arranged on ground rail and can be moved along the direction of track, for enters automatically in process of production Material；Heating furnace (2)：It is connected with the skip car (1), for being heated to material；Quenching tank (3)：One end is provided with the first hoistable platform (34) being connected with the heating furnace (2), for holding salt bath medium And Quenching Treatment is carried out to the material after heating, material can be as the first hoistable platform (34) be in the salt bath medium Motion；Tempering bath (4)：One end is provided with the second hoistable platform (43) being connected with the quenching tank (3), for by quenching Material after reason carries out temper；Cleaning device (5)：One end is connected with the tempering bath (4), for being cooled down, clearly to the material after temper Wash and dry；Lower truck (6)：It is arranged on ground rail and can be moved along the direction of track, is connected with the cleaning device (5), For automatic material returning in process of production；Automatic control system (7)：Including the gear motor (71) being arranged on the skip car (1) and the lower truck (6), if Put the motor (72) on first hoistable platform (34) and second hoistable platform (43), be arranged on the heating First temperature control device (73) of (2), the second temperature control device (74) being arranged in the quenching tank (3) in stove, be arranged on it is described The 3rd temperature control device (75) in tempering bath (4) and for the gear motor (71), the motor (72), described One temperature control device (73), second temperature control device (74), the 3rd temperature control device (75) send the middle control machine (76) instructed.
- A kind of 2. automatic control system for alloy spring steel heat treatment according to claim 1, it is characterised in that：Institute Stating skip car (1) and the lower truck (6) includes car body (11), is arranged on the car body (11) upper surface and is used to place material Material frame (12), it is arranged in the material frame (12) and is used to limit the locating slot (13) of the material movement and is arranged on described The drive (14) of car body (11) bottom.
- A kind of 3. automatic control system for alloy spring steel heat treatment according to claim 1, it is characterised in that：Institute Stating heating furnace (2) includes body of heater (21) on the ground is fixedly mounted, and is arranged on the body of heater (21) side and the skip car (1) connected preceding fire door (22), is arranged on the rear stove that the body of heater (21) opposite side is connected with first hoistable platform (34) Door (23), the heating chamber (24) being arranged in the body of heater (21), the club transmission system being arranged in the heating chamber (24) (25) heating rod (26), being arranged on below the club transmission system (25), is arranged on the body of heater (21) and the heating Heating furnace heat-insulation layer (27) between room (24), the exhaust-gas treatment component (28) being arranged on above the body of heater (21) and is arranged on Exhaust manifolds (29) on the body of heater (21) below the rear fire door (23).
- A kind of 4. automatic control system for alloy spring steel heat treatment according to claim 3, it is characterised in that：Institute Heating furnace heat-insulation layer (27) is stated to be prepared by alumina-silicate ceramic fibre material.
- A kind of 5. automatic control system for alloy spring steel heat treatment according to claim 1, it is characterised in that：Institute Stating quenching tank (3) includes quenching slot shell (31) on the ground is fixedly mounted, and it is internal to be arranged on the quenching slot shell (31) The first salt bath isothermobath (32), be arranged on it is described quenching slot shell (31) and the first salt bath isothermobath (32) between quenching Fiery groove heat-insulation layer (33), it is arranged on the first lifting being connected above the first salt bath isothermobath (32) with the heating furnace (2) Platform (34), the quenching tank heating system (35) being arranged on above the first salt bath isothermobath (32), is arranged on the quenching Pipe heat exchanger (36) below groove heating system (35), the air-cooler being arranged on above the quenching tank heating system (35) (37) the quenching tank cooling system (38) that, is arranged on below the first salt bath isothermobath (32) and it is arranged on first salt bath Agitating device (39) in isothermobath (32).
- A kind of 6. automatic control system for alloy spring steel heat treatment according to claim 1, it is characterised in that：Institute Stating tempering bath (4) includes the tempering slot shell (41) that fixes on the ground, be arranged on the tempering slot shell (41) it is internal the Two salt bath isothermobaths (42), it is arranged on the second lifting being connected on the second salt bath isothermobath (42) with the quenching tank (3) Platform (43), the tempering bath heat-insulation layer being arranged between the tempering slot shell (41) and the second salt bath isothermobath (42) And the agitating device (45) that is arranged on above the second salt bath isothermobath (42) (44).
- A kind of 7. automatic control system for alloy spring steel heat treatment according to claim 1, it is characterised in that：Institute Stating cleaning device (5) includes support (51), is arranged on the sink being connected on the support (51) with the tempering bath (4) (52) spray equipment (53), being arranged on above the sink (52), the exhaust being arranged on above the spray equipment (53) System (54), it is arranged on the drying tank (55) being connected on the support (51) with the sink (52) and is arranged on the drying Induced draught system (56) above groove (55).
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| CN108642267A (en) * | 2018-05-21 | 2018-10-12 | 苏州启航不锈钢制品有限公司 | A kind of process units and production technology of spring essence line |
| CN111115144A (en) * | 2020-01-23 | 2020-05-08 | 爱协林热处理系统(北京)有限公司 | Automatic production line for heat treatment of workpieces with automatic process transfer transport vehicle |
| CN111560504A (en) * | 2020-04-24 | 2020-08-21 | 丹阳市恒泰电炉有限公司 | Special quenching system for box-type quenching furnace |
| CN112725603A (en) * | 2020-12-22 | 2021-04-30 | 苏州长齐精密机械有限公司 | Continuous automatic machine tool alloy mandrel heat treatment device |
| CN113621767A (en) * | 2021-08-19 | 2021-11-09 | 刘学付 | Intelligent heat treatment production line |
| CN114150143A (en) * | 2021-12-22 | 2022-03-08 | 青岛特殊钢铁有限公司 | Salt bath heat treatment comprehensive experiment platform and method for high-speed wire rod |
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| CN112725603A (en) * | 2020-12-22 | 2021-04-30 | 苏州长齐精密机械有限公司 | Continuous automatic machine tool alloy mandrel heat treatment device |
| CN113621767A (en) * | 2021-08-19 | 2021-11-09 | 刘学付 | Intelligent heat treatment production line |
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