CN102010980B - Steel wire open firing, water quenching and thermal insulation combined isothermal quenching device - Google Patents
Steel wire open firing, water quenching and thermal insulation combined isothermal quenching device Download PDFInfo
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- CN102010980B CN102010980B CN2010106156759A CN201010615675A CN102010980B CN 102010980 B CN102010980 B CN 102010980B CN 2010106156759 A CN2010106156759 A CN 2010106156759A CN 201010615675 A CN201010615675 A CN 201010615675A CN 102010980 B CN102010980 B CN 102010980B
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Abstract
The invention relates to a steel wire open firing, water quenching and thermal insulation combined isothermal quenching device. According to the technical scheme of the invention, the steel wire open firing, water quenching and thermal insulation combined isothermal quenching device is characterized by comprising a water quenching device and a thermal insulation furnace, which are sequentially arranged along the transmission direction of a steel wire, wherein the water quenching device is arranged behind an open-fire furnace, a wire-supporting and splitting brick for supporting the steel wire is arranged at an outlet of the open-fire furnace, and the steel wire enters into the water quenching device via the wire-supporting and splitting brick; and the thermal insulation furnace is arranged behind the water quenching device, and the steel wire getting out of the water quenching device directly enters into the thermal insulation furnace. The water quenching device and the thermal insulation furnace are combined for carrying out isothermal quenching treatment on the steel wire after heating treatment by the open-fire furnace, and the steel wire after the quenching treatment by the device is perfect in transformation of the sorbite structure and good in mechanical properties.
Description
Technical field
The invention belongs to the Steel Wire Heat Treatment equipment technical field, specifically relate to a kind of steel wire naked light heating shrend insulation built-up type isothermal quenching equipment.
Background technology
In the prior art,, need carry out various thermal treatments to steel wire usually in order to improve the over-all properties of steel wire.Wherein, steel wire being converted into the sorbite tissue can make steel wire have good comprehensive mechanical performance.The sorbite tissue belongs to the tissue of perlite type, but its tissue is thinner than pearlitic structure, and mechanical propertys such as drawing property are more outstanding.
At present, commonly usedly steel wire is carried out the heat treated equipment of sorbitizing mainly constitute by lead pan and with supporting well heater, water cooler and the control panel of lead pan.Fill with 500 ℃ ~ 600 ℃ molten lead liquids in the lead pan, the steel wire that is heated to 900 ℃ enters into the plumbous liquid in the lead pan, and steel wire is cooled to rapidly and plumbous liquid phase temperature together.Because lead pan has certain length, steel wire just is equivalent to when in lead pan, moving 500 ℃ ~ 600 ℃ insulations down, and steel wire is during this period of time realized the sorbite structural transformation, leaves lead pan until steel wire and accomplishes the sorbite transition process.But this treatment facility needs all the time plumbous liquid to be maintained 500 ℃ ~ 600 ℃; The energy that needs labor, and the plumbous liquid of molten state can form lead steam, and contaminate environment is healthy with harm; And cause injuries such as scald, burn easily to operator, dangerous high.
In addition, processing form such as employing is air-cooled, water-cooled are arranged also, but in this kind equipment; Temperature controlling and maintenance be difficulty very; The temperature of Steel Wire Surface lowers often, but temperature inside is still very high, causes sorbite metaplasia imperfection; Wire quality is unstable, fracture easily in drawing process.And the manufacturing of this kind equipment, use and maintenance cost are high, are difficult to apply.
Summary of the invention
The objective of the invention is to overcome the deficiency that exists in the prior art; Provide a kind of steel wire naked light heating shrend to be incubated knockdown isothermal quenching equipment; This isothermal quenching apparatus combines water quenching device and holding furnace to use; Be used for the steel wire after the direct-fired heater heat treated is carried out means of isothermal quenching, the sorbite metaplasia of the steel wire after this equipment quench treatment is perfect, and mechanical property is good.
According to technical scheme provided by the invention: steel wire naked light heating shrend insulation built-up type isothermal quenching equipment; It is characterized in that: comprise the water quenching device and the holding furnace that are provided with in order along the steel wire transmission direction; Said water quenching device is arranged on the rear of direct-fired heater; The direct-fired heater exit is provided with the holder silk separated time brick that is used for supporting steel wire, and steel wire gets in the water quenching device via holder silk separated time brick; Said holding furnace is arranged on the rear of water quenching device, and the steel wire that comes out in the water quenching device directly gets into holding furnace inside.
As further improvement of the present invention, said water quenching device comprises work cell body, cell body carriage, shrend inlet wire carrying roller, fixed dam, controllable register, moving telescopic mechanism, shrend outlet carrying roller, the hardening liquid recycle system and shrend outlet cover plate; Said work cell body relies on the cell body bracket support; It is anterior that said shrend inlet wire carrying roller is installed in the work cell body; Said fixed dam vertically is arranged on the intravital front portion of work nest; Controllable register vertically is arranged on the intravital rear portion of work nest; Constitute a quenching chamber that is used to hold hardening liquid between fixed dam and the controllable register, quenching chamber is provided with the water-in that is used to feed hardening liquid; Said controllable register links to each other with moving telescopic mechanism, relies on moving telescopic mechanism to drive in the work cell body and moves, to regulate the length of quenching chamber; Said shrend outlet carrying roller is installed in the controllable register rear portion; Be provided with return line between said fixed dam and the work cell body front bulkhead, be provided with upflow tube between said controllable register and the work cell body aft end bulkhead, return line and upflow tube are connected with the hardening liquid recycle system respectively; Said shrend outlet cover plate is arranged on the rear portion of work cell body movably, and shrend outlet cover plate is used for preventing that the steel wire from hardening liquid comes out is directly exposed to the air.
As further improvement of the present invention, the said hardening liquid recycle system comprises upper reservoir, water inlet pipe, rising pipe, the next reservoir and recycle pump, and the outlet of said upper reservoir is connected with quenching chamber inside through water inlet pipe; Said return line, upflow tube are connected with the next reservoir through rising pipe, are provided with the interchanger that keeps temperature-stable in the next reservoir; The outlet of the next reservoir is connected with the import of upper reservoir via recycle pump, and recycle pump is used for hardening liquid is pumped into upper reservoir by the next reservoir.
As further improvement of the present invention, the water-in of said quenching chamber is arranged on the front portion of quenching chamber, above water-in, is provided with the water inlet stabilier that keeps hardening liquid steadily to rise.
As further improvement of the present invention, said water inlet pipe is stretched in the quenching chamber by the work nest body sidewall, and the sealing of water inlet pipe inner termination offers the some amount ostium excurrens that Open Side Down on the inner tube wall of water inlet pipe.
As further improvement of the present invention; Said moving telescopic mechanism comprises regulating shaft, gear and tooth bar; Said regulating shaft is installed in rotation on the work cell body, and said gear is installed in the regulating shaft two ends, and said tooth bar is connected with said controllable register; Rack and pinion is meshed, and gear rotates the drive tooth bar and moves; The two ends of said regulating shaft are equipped with the regulating handle that is used for the rotation adjusting axle.
As further improvement of the present invention, said upflow tube has certain altitude in the intravital part of work nest, so that can store the hardening liquid of certain liquid level between controllable register and the work cell body front portion.
As further improvement of the present invention; Said holding furnace comprises the body of heater that relies on bracket support, is provided with into the stove closer and comes out of the stove closer at the entrance end of body of heater, and said body of heater inside is burner hearth; Be provided with cover block and heating brick in the burner hearth, said body of heater top is provided with cover plate.
As further improvement of the present invention, be provided with the thermal insulation layer that prevents that heat scatters and disappears in the said body of heater.
The present invention compared with prior art, advantage is: (1), realize the formation of sorbite tissue with the water quenching form, compare with traditional lead pan isothermal quenching form, health environment-friendly is dangerous low more; (2), adopt the water quenching device, neither need expend lead material, do not need the energy of labor to keep high-temperature yet, the production cost saving, amount of energy consumption is low; (3), water quenching device and holding furnace are combined to use, the sorbite metaplasia of the steel wire after quench treatment is perfect, and mechanical property is good, and operation is simple relatively.
Description of drawings
Fig. 1 is a structural front view of the present invention.
Fig. 2 is a structure vertical view of the present invention.
Description of reference numerals: A-steel wire; The 1-direct-fired heater; 1.1-holder silk separated time brick; 1.2-filament mouth fire door frame; 1.3-observe door; 1.4-fire door; 2-water quenching device; 2.1-work cell body; 2.2-fixed dam; 2.3-water inlet stabilier; 2.4-moving telescopic mechanism; 2.4.1-tooth bar; 2.4.2-gear; 2.4.3-regulating shaft; 2.4.4-regulating handle; 2.5-controllable register; 2.6-shrend outlet carrying roller; 2.7-shrend outlet cover plate; 2.8-return line; 2.9-water inlet pipe; 2.9.1-ostium excurrens; 2.10-rising pipe; 2.11-cell body carriage; 2.12-quenching chamber; 2.13-upflow tube; 2.14-upper reservoir; 2.15-the next reservoir; 2.16-recycle pump; 2.17-interchanger; 2.18-shrend inlet wire carrying roller; The 3-holding furnace; 3.1-body of heater; 3.2-advance the stove closer; 3.3-burner hearth; 3.4-cover block; 3.5-heating brick; 3.6-cover plate; 3.7-thermal insulation layer; The closer 3.8-come out of the stove; 3.9-carriage.
Embodiment
Below in conjunction with concrete accompanying drawing and embodiment the present invention is described further.
As shown in the figure: the invention provides a kind of shrend insulation built-up type isothermal quenching equipment, it is mainly used in the steel wire A after direct-fired heater 1 heat treated is carried out quench treatment, and said direct-fired heater 1 can adopt Sweet natural gas, oil, coal etc. as heating energy source.Said shrend insulation built-up type isothermal quenching equipment mainly is made up of water quenching device 2 and holding furnace 3; Water quenching device 2 is provided with along steel wire A transmission direction with holding furnace 3 in order; Said water quenching device 2 is arranged on the rear of direct-fired heater 1; Direct-fired heater 1 exit is provided with the holder silk separated time brick 1.1 that is used for supporting steel wire A, and steel wire A gets in the water quenching device 2 via holder silk separated time brick 1.1; Said holding furnace 3 is arranged on the rear of water quenching device 2, and the steel wire A that comes out in the water quenching device 2 directly gets into holding furnace 3 inside.Filament mouth fire door frame 1.2 is equipped with at the filament mouth place of said direct-fired heater 1, on the filament mouth fire door frame 1.2 fire door 1.4 is installed, and fire door 1.4 is used to prevent that outside air from getting in the stove, avoids steel wire A oxidized.In addition, also be provided with the observation door 1.3 that is used to observe steel wire A situation on the said direct-fired heater 1.
Like Fig. 1, shown in Figure 2, said water quenching device 2 mainly is made up of work cell body 2.1, cell body carriage 2.11, shrend inlet wire carrying roller 2.18, fixed dam 2.2, controllable register 2.5, moving telescopic mechanism 2.4, shrend outlet carrying roller 2.6, the hardening liquid recycle system and shrend outlet cover plate 2.7; Said work cell body 2.1 relies on cell body carriage 2.11 to support; Said shrend inlet wire carrying roller 2.18 is installed in work cell body 2.1 front portions; Said fixed dam 2.2 vertically is arranged on the front portion in the work cell body 2.1; Controllable register 2.5 vertically is arranged on the rear portion in the work cell body 2.1; Constitute a quenching chamber 2.12 that is used to hold hardening liquid between fixed dam 2.2 and the controllable register 2.5, quenching chamber 2.12 is provided with the water-in that is used to feed hardening liquid; Said controllable register 2.5 links to each other with moving telescopic mechanism 2.4, relies on moving telescopic mechanism 2.4 to drive in work cell body 2.1 and moves, to regulate the length of quenching chamber 2.12; Said shrend outlet carrying roller 2.6 is installed in controllable register 2.5 rear portions; Be provided with return line 2.8 between said fixed dam 2.2 and work cell body 2.1 front bulkheads, be provided with upflow tube 2.13 between said controllable register 2.5 and work cell body 2.1 aft end bulkheads, return line 2.8 is connected with the hardening liquid recycle system respectively with upflow tube 2.13; Said shrend outlet cover plate 2.7 is arranged on the rear portion of work cell body 2.1 movably, and shrend outlet cover plate 2.7 is used for preventing that the steel wire A from hardening liquid comes out is directly exposed to the air.
Like Fig. 1, shown in Figure 2; The said hardening liquid recycle system mainly is made up of upper reservoir 2.14, water inlet pipe 2.9, rising pipe 2.10, the next reservoir 2.15 and recycle pump 2.16, and the outlet of said upper reservoir 2.14 is connected with quenching chamber 2.12 inside through water inlet pipe 2.9; Water inlet pipe 2.9 is stretched in the quenching chamber 2.12 by work cell body 2.1 sidewalls, and the sealing of water inlet pipe 2.9 inner termination offers the some amount ostium excurrens 2.9.1 that Open Side Down on water inlet pipe 2.9 inner tube walls, and hardening liquid flows out downwards from ostium excurrens 2.9.1; Said return line 2.8, upflow tube 2.13 are connected with the next reservoir 2.15 through rising pipe 2.10, are provided with the interchanger 2.17 that keeps temperature-stable in the next reservoir 2.15; The outlet of the next reservoir 2.15 is connected via the import of recycle pump 2.16 with upper reservoir 2.14, and recycle pump 2.16 is used for hardening liquid is pumped into upper reservoir 2.14 by the next reservoir 2.15.
As shown in Figure 1, the water-in of said quenching chamber 2.12 is arranged on the front portion of quenching chamber 2.12.Because the quench fluid temperature that has just got in the quenching chamber 2.12 is low, and just got into the steel wire A temperature height of quenching chamber 2.12, water-in is arranged on quenching chamber 2.12 front portions can make the high steel wire A of the low hardening liquid cooling temperature of temperature, has improved evaporation efficiency.Above water-in, be provided with the water inlet stabilier 2.3 that keeps hardening liquid steadily to rise.Water inlet stabilier 2.3 can make hardening liquid steadily rise, and can not destroy the protective membrane on steel wire A surface, has avoided because protective membrane breaks the steel wire A that the causes phenomenon of sharply lowering the temperature, and guarantees that the sorbite metaplasia of steel wire A improves thorough.In addition, the ostium excurrens 2.9.1 purpose that Open Side Down on the said water inlet pipe 2.9 inner tube walls also is for hardening liquid is steadily risen.
Moving telescopic mechanism 2.4 among the present invention can select various ways for use, drives the function that controllable register 2.5 moves as long as have.Fig. 1, moving telescopic mechanism 2.4 shown in Figure 2 mainly are made up of regulating shaft 2.4.3, gear 2.4.2 and tooth bar 2.4.1; Said regulating shaft 2.4.3 is installed in rotation on the work cell body 2.1; Said gear 2.4.2 is installed in regulating shaft 2.4.3 two ends; Said tooth bar 2.4.1 is connected with said controllable register 2.5, and tooth bar 2.4.1 is meshed with gear 2.4.2, and gear 2.4.2 rotating band carry-over bar 2.4.1 moves; The two ends of said regulating shaft 2.4.3 are equipped with the regulating handle 2.4.4 that is used for rotation adjusting axle 2.4.3.
As shown in Figure 1; The part of upflow tube 2.13 among the present invention in work cell body 2.1 has certain altitude; The hardening liquid that overflows in the quenching chamber 2.12 partly is stored between controllable register 2.5 and work cell body 2.1 front portions; Could flow out from upflow tube 2.13 until reaching the certain liquid level height, the hardening liquid of storage provides certain anchorage force can for controllable register 2.5, prevents because of the controllable register 2.5 poorly sealed hardening liquid seepages that cause.
Like Fig. 1, shown in Figure 2; Said holding furnace 3 comprises the body of heater 3.1 that relies on carriage 3.9 to support; Entrance end at body of heater 3.1 is provided with into the stove closer 3.2 and the closer 3.8 of coming out of the stove; Said body of heater 3.1 inside are burner hearth 3.3, are provided with cover block 3.4 and heating brick 3.5 in the burner hearth 3.3, and said body of heater 3.1 tops are provided with cover plate 3.6.In addition, also be provided with the thermal insulation layer 3.7 that prevents that heat scatters and disappears in the said body of heater 3.1.
Concrete applicable cases of the present invention is following:
Steel wire A through direct-fired heater 1 heat treated to 900 ℃ gets in the work cell body 2.1 of water quenching devices 2 via holder silk separated time brick 1.1; Steel wire A relies on shrend inlet wire carrying roller 2.18 and shrend outlet carrying roller 2.6 to support; Advance in the hardening liquid between fixed dam 2.2 and controllable register 2.5, said hardening liquid is the water that is added with water based quenching agent; 900 ℃ steel wire A gets in the hardening liquid, and through cryogenic hardening liquid cooling, the surface of high temperature steel wire A can form protective membrane, and this protective membrane can prevent that steel wire A temperature from sharply reducing.Said steel wire A walks for some time in hardening liquid, at this moment between the section in, the temperature of steel wire A is reduced between 550 ℃ ~ 630 ℃ the temperature range of i.e. sorbite structural transformation from 900 ℃.After steel wire A comes out from hardening liquid, promptly directly get in the holding furnace 3, the temperature in the holding furnace 3 are controlled between 500 ℃ ~ 600 ℃, steel wire A continues to walk in holding furnace 3, thereby make changing of sorbite tissue more perfect.
Claims (9)
1. steel wire naked light heating shrend is incubated built-up type isothermal quenching equipment; It is characterized in that: comprise the water quenching device (2) and the holding furnace (3) that are provided with in order along steel wire (A) transmission direction; Said water quenching device (2) is arranged on the rear of direct-fired heater (1); Direct-fired heater (1) exit is provided with the holder silk separated time brick (1.1) that is used for supporting steel wire (A), and steel wire (A) gets in the water quenching device (2) via holder silk separated time brick (1.1); Said holding furnace (3) is arranged on the rear of water quenching device (2), and the steel wire (A) that comes out in the water quenching device (2) directly gets into holding furnace (3) inside.
2. steel wire naked light heating shrend insulation built-up type isothermal quenching equipment as claimed in claim 1, it is characterized in that: said water quenching device (2) comprises work cell body (2.1), cell body carriage (2.11), shrend inlet wire carrying roller (2.18), fixed dam (2.2), controllable register (2.5), moving telescopic mechanism (2.4), shrend outlet carrying roller (2.6), the hardening liquid recycle system and shrend outlet cover plate (2.7); Said work cell body (2.1) relies on cell body carriage (2.11) to support; Said shrend inlet wire carrying roller (2.18) is installed in work cell body (2.1) front portion; Said fixed dam (2.2) vertically is arranged on the front portion in the work cell body (2.1); Controllable register (2.5) vertically is arranged on the rear portion in the work cell body (2.1); Constitute a quenching chamber (2.12) that is used to hold hardening liquid between fixed dam (2.2) and the controllable register (2.5), quenching chamber (2.12) is provided with the water-in that is used to feed hardening liquid; Said controllable register (2.5) links to each other with moving telescopic mechanism (2.4), relies on moving telescopic mechanism (2.4) to drive in work cell body (2.1) and moves, to regulate the length of quenching chamber (2.12); Said shrend outlet carrying roller (2.6) is installed in controllable register (2.5) rear portion; Be provided with return line (2.8) between said fixed dam (2.2) and work cell body (2.1) front bulkhead; Be provided with upflow tube (2.13) between said controllable register (2.5) and work cell body (2.1) aft end bulkhead, return line (2.8) and upflow tube (2.13) are connected with the hardening liquid recycle system respectively; Said shrend outlet cover plate (2.7) is arranged on the rear portion of work cell body (2.1) movably, and shrend outlet cover plate (2.7) is used for preventing that the steel wire (A) from hardening liquid comes out is directly exposed to the air.
3. steel wire naked light heating shrend insulation built-up type isothermal quenching equipment as claimed in claim 2; It is characterized in that: the said hardening liquid recycle system comprises upper reservoir (2.14), water inlet pipe (2.9), rising pipe (2.10), the next reservoir (2.15) and recycle pump (2.16), and the outlet of said upper reservoir (2.14) is connected with quenching chamber (2.12) inside through water inlet pipe (2.9); Said return line (2.8), upflow tube (2.13) are connected with the next reservoir (2.15) through rising pipe (2.10), are provided with the interchanger (2.17) that keeps temperature-stable in the next reservoir (2.15); The outlet of the next reservoir (2.15) is connected via the import of recycle pump (2.16) with upper reservoir (2.14), and recycle pump (2.16) is used for hardening liquid is pumped into upper reservoir (2.14) by the next reservoir (2.15).
4. steel wire naked light heating shrend insulation built-up type isothermal quenching equipment as claimed in claim 2; It is characterized in that: the water-in of said quenching chamber (2.12) is arranged on the front portion of quenching chamber (2.12), above water-in, is provided with the water inlet stabilier (2.3) that keeps hardening liquid steadily to rise.
5. steel wire naked light heating shrend insulation built-up type isothermal quenching equipment as claimed in claim 2; It is characterized in that: said water inlet pipe (2.9) is stretched in the quenching chamber (2.12) by work cell body (2.1) sidewall; The sealing of water inlet pipe (2.9) inner termination offers the some amount ostium excurrens that Open Side Down (2.9.1) on the inner tube wall of water inlet pipe (2.9).
6. steel wire naked light heating shrend insulation built-up type isothermal quenching equipment as claimed in claim 2; It is characterized in that: said moving telescopic mechanism (2.4) comprises regulating shaft (2.4.3), gear (2.4.2) and tooth bar (2.4.1); Said regulating shaft (2.4.3) is installed in rotation on the work cell body (2.1); Said gear (2.4.2) is installed in regulating shaft (2.4.3) two ends; Said tooth bar (2.4.1) is connected with said controllable register (2.5), and tooth bar (2.4.1) is meshed with gear (2.4.2), and gear (2.4.2) rotating band carry-over bar (2.4.1) moves; The two ends of said regulating shaft (2.4.3) are equipped with the regulating handle (2.4.4) that is used for rotation adjusting axle (2.4.3).
7. steel wire naked light heating shrend insulation built-up type isothermal quenching equipment as claimed in claim 2; It is characterized in that: the part of said upflow tube (2.13) in work cell body (2.1) has certain altitude, so that can store the hardening liquid of certain liquid level between controllable register (2.5) and work cell body (2.1) front portion.
8. steel wire naked light heating shrend insulation built-up type isothermal quenching equipment as claimed in claim 1; It is characterized in that: said holding furnace (3) comprises the body of heater (3.1) that relies on carriage (3.9) to support; Entrance end at body of heater (3.1) is provided with into stove closer (3.2) and the closer of coming out of the stove (3.8); Said body of heater (3.1) inside is burner hearth (3.3); Be provided with cover block (3.4) and heating brick (3.5) in the burner hearth (3.3), said body of heater (3.1) top is provided with cover plate (3.6).
9. steel wire naked light heating shrend insulation built-up type isothermal quenching equipment as claimed in claim 8 is characterized in that: be provided with the thermal insulation layer (3.7) that prevents that heat scatters and disappears in the said body of heater (3.1).
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| CN2010106156759A CN102010980B (en) | 2010-12-30 | 2010-12-30 | Steel wire open firing, water quenching and thermal insulation combined isothermal quenching device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010106156759A CN102010980B (en) | 2010-12-30 | 2010-12-30 | Steel wire open firing, water quenching and thermal insulation combined isothermal quenching device |
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| CN102010980B true CN102010980B (en) | 2012-04-04 |
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| CN103103335A (en) * | 2011-11-10 | 2013-05-15 | 浙江昱辉阳光能源有限公司 | Steel wire heat treatment method and steel wire heat treatment device |
| CN103361479A (en) * | 2013-07-25 | 2013-10-23 | 张家港市胜达钢绳有限公司 | Steel wire quenching equipment |
| CN105296725A (en) * | 2014-07-30 | 2016-02-03 | 永圆有限公司 | Quenching mechanism with heat treatment function |
| CN105755271B (en) * | 2014-12-19 | 2018-04-24 | 张家港市东航机械有限公司 | Steel wire heating quenching unit |
| CN105671270B (en) * | 2016-03-30 | 2018-05-18 | 张家港市东航机械有限公司 | A kind of upper quenching tank of steel wire water-bath cooling quenching unit |
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| JPS51106621A (en) * | 1975-02-14 | 1976-09-21 | Ru Fuuru Endeyusutorieru Beruj | KOSENNOPATENCHINGUHOHOOYOBISOCHI |
| CN2370024Y (en) * | 1999-04-23 | 2000-03-22 | 无锡市新科自动控制研究所 | Assembled oil burning (gas-burning) semi open fire heating furnace for steel wire hot treatment |
| CN201501916U (en) * | 2009-09-21 | 2010-06-09 | 河南恒星科技股份有限公司 | Heat treatment production equipment for steel-wires |
| CN201933124U (en) * | 2010-12-30 | 2011-08-17 | 无锡市新科冶金设备有限公司 | Water quenching and heat insulating combination type isothermal quenching equipment for heating steel wires by open fire |
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Denomination of invention: Steel wire open firing, water quenching and thermal insulation combined isothermal quenching device Effective date of registration: 20120618 Granted publication date: 20120404 Pledgee: Bank of Jiangsu, Limited by Share Ltd, Wuxi science and Technology Branch Pledgor: Wuxi Xinke Metallurgical Equipment Co., Ltd. Registration number: 2012990000305 |
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Date of cancellation: 20130109 Granted publication date: 20120404 Pledgee: Bank of Jiangsu, Limited by Share Ltd, Wuxi science and Technology Branch Pledgor: Wuxi Xinke Metallurgical Equipment Co., Ltd. Registration number: 2012990000305 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Steel wire open firing, water quenching and thermal insulation combined isothermal quenching device Effective date of registration: 20130109 Granted publication date: 20120404 Pledgee: Bank of Jiangsu, Limited by Share Ltd, Wuxi science and Technology Branch Pledgor: Wuxi Xinke Metallurgical Equipment Co., Ltd. Registration number: 2013990000020 |
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