CN108048629A - A kind of hardening media temperature control equipment - Google Patents
A kind of hardening media temperature control equipment Download PDFInfo
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- CN108048629A CN108048629A CN201810067122.0A CN201810067122A CN108048629A CN 108048629 A CN108048629 A CN 108048629A CN 201810067122 A CN201810067122 A CN 201810067122A CN 108048629 A CN108048629 A CN 108048629A
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- salt
- condenser
- salt bath
- pipeline
- saline slot
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
- C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
- C21D1/20—Isothermal quenching, e.g. bainitic hardening
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/607—Molten salts
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
- C21D11/005—Process control or regulation for heat treatments for cooling
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Abstract
The present invention provides a kind of hardening media temperature control equipments, it is related to salt bath quenching equipment technical field, including salt bath, saline slot, condenser, storage salt cellar and ejector pipe, it is contained in saline slot and metal material after nitrate quenching or the residual salt of piece surface is cleaned by the brine to be formed by the washing process after heat treatment, the high-temperature molten salt for salt bath quenching is contained in salt bath；High-temperature molten salt injection in salt bath can be entered to store up in salt cellar by ejector pipe；Brine in saline slot is transported in injection tube cavity and is mixed with high-temperature molten salt；Exhaust outlet and refluxing opening are provided on storage salt cellar, exhaust outlet is connected with condenser high temperature inlet, and refluxing opening is connected with salt bath；The hot outlet of condenser is connected with stating saline slot.The present invention realizes the stability of quenching technical during salt made from earth containing a comparatively high percentage of sodium chloride isothermal hardening, while provides guarantee means for the salt bath quenching of serialization.
Description
Technical field
The present invention relates to salt bath quenching equipment technical fields, are used to control salt bath quenching high in the process more particularly, to one kind
Temperature molten salt temperature, being particularly suitable for heat treatment department, either iron and steel enterprise carries out the quenching that online salt bath or offline salt bath are heat-treated
Medium temperature control device.
Background technology
With the reinforcement of environmental consciousness recent years, heat treatment industry is accelerating the process of superseded lead bath heat treatment.For
Many metal products and part heat treatment are faced with industry crisis, and lead bath has existed for hundred as stable isothermal quenching technique
Year or more, the sorbite tissue of isothermal hardening acquisition high-carbon steel is very suitable for the drawing of deep processing industry, especially in spring steel
The arts such as silk, bridge rope zinc-coated wire, wire of steel wire tire cord, Hai Gongsheng, cutting wire play an important role of to be difficult to substitute, and eliminate lead bath
Mean that the development of these product industries will be hard to carry on.
Salt bath quenching heat treatment is mainly used to carry out isothermal hardening, hardening media salt made from earth containing a comparatively high percentage of sodium chloride to the metal after influence of high austenizing temp
Hardening heat at 150-600 DEG C；Part or quenched sorbite or the bainite of being organized as of metal isothermal are depending on technique
It needs, salt bath quenching is because quenching intensity is strong, quenching structure performance is uniformly widely used in bearing, the martensite of gear is quenched
In the sorbite quenching of the wire drawing class wire rod such as fire and spring, twisted wire, cord.Salt bath is heat-treated and salt bath quenching is maximum
Advantage is exactly that cooldown rate is fast, while high-temperature molten salt is uniform as coolant temperature control, so as to greatly improve the steady of technique
It is qualitative.For its cooldown rate although not as good as lead bath, high temperature salt made from earth containing a comparatively high percentage of sodium chloride mobility is fine, and water raising cannot be added to quench in salt made from earth containing a comparatively high percentage of sodium chloride
Fire severity is well suited as the alternative techniques of lead bath.
But during the salt bath austempering of processing heavy parts or continuous operation, substantial amounts of hot parts meeting
Heat exchange occurs with salt bath medium, the result is that high-temperature molten salt temperature constantly raises, in this case it is necessary to increase in salt bath
Add cooling system, which there must be very strong exchange capability of heat.Lot of domestic and international nitrate quenching slot cooling water pipe or air hose
Mode cools down salt bath by circulating cooling medium in pipeline, and first, the potential hidden danger of water pipe is very big, once pipeline is sent out
Raw crackle, it may occur that explosion；Secondly, pipe outer wall is easy to crust, and so seriously affects the accuracy of cooling control.Air hose,
Cooling capacity is on the weak side, can also be maintained for the very low heat treatment operation of some production efficiencys, but for large size heat treatment zero
Part is difficult to control Wen Sheng in a short time, particularly with tinuous production, as steel industry burning optimization on line, per hour
For production capacity all at 100 tons, the heat into salt bath reaches 1012 joules/hour or more, and to control Wen Sheng, heat exchange area is too
Greatly, salt bath is difficult design.
The content of the invention
It is real it is an object of the invention to provide a kind of control salt bath quenching process high temperature hardening media temperature control equipment
Showed the stability of quenching technical during salt made from earth containing a comparatively high percentage of sodium chloride isothermal hardening, guarantee means provided for the salt bath quenching of serialization, also for
The burning optimization on line of the steel rolling production-line of iron and steel enterprise provides necessary guarantee means, so as to fulfill the cooling link after rolling
Water cooling or air-cooled technique are substituted using salt bath.
To achieve the above object, the present invention provides following technical schemes：
A kind of hardening media temperature control equipment provided by the invention, including salt bath, saline slot, condenser, storage salt cellar
And ejector pipe, wherein：
It is contained metal material after nitrate quenching or parts list in the saline slot through the washing process after heat treatment
The residual salt in face cleans the brine to be formed, and the high-temperature molten salt for salt bath quenching is contained in the salt bath；
Described ejector pipe one end is arranged in the salt bath, and the other end is connected with the storage salt cellar；The ejector pipe energy
High-temperature molten salt injection in the salt bath is entered in the storage salt cellar；
The saline slot is connected by the first pipeline with the injection tube cavity, and first pipeline can be by the saline slot
Interior brine is transported in the injection tube cavity and is mixed with high-temperature molten salt；
It is provided with exhaust outlet and refluxing opening on the storage salt cellar, the exhaust outlet and the condenser high temperature inlet pass through the
Two pipeline connections, the refluxing opening pass through the 3rd pipeline connection with the salt bath；
The hot outlet of the condenser passes through the 4th pipeline connection, the low-temperature inlet of the condenser with the saline slot
Pass through the 5th pipeline connection with circulating cooling tower respectively with low-temperature outlet.
The present invention is recycled the residual salt of metal material surface after nitrate quenching using washing process, to metal material
Or part is cleaned, the brine of formation is driven into as once cooling medium in ejector pipe, for realizing the cold of high temperature salt made from earth containing a comparatively high percentage of sodium chloride
But and cycle；Simultaneously in the cooling of high temperature salt made from earth containing a comparatively high percentage of sodium chloride and reflux course, the salt made from earth containing a comparatively high percentage of sodium chloride of reflux plays the role of stirring to entire salt bath,
It ensure that the constant and uniformity of salt bath temperature.
It is high temperature salt made from earth containing a comparatively high percentage of sodium chloride in the salt bath, salt made from earth containing a comparatively high percentage of sodium chloride temperature is at 450-600 DEG C, the metal material of adaptation influence of high austenizing temp
Material carries out isothermal salt bath quenching, this temperature range is suitble to the sorbite of medium and high carbon steel to quench.
As a further improvement on the present invention, the storage salt cellar is higher than salt bath setting, the refluxing opening and described
Exhaust outlet is separately positioned on the bottom and top of the storage salt cellar, and the salt bath is arranged side by side with the saline slot, described cold
Condenser is arranged on above the saline slot.
As a further improvement on the present invention, the ejector pipe, the storage salt cellar and the 3rd pipeline are using heat-resisting
Stainless steel is made.
As a further improvement on the present invention, the ejector pipe lower end is inserted into below the salt bath high temperature salt made from earth containing a comparatively high percentage of sodium chloride liquid level
200-1000mm。
As a further improvement on the present invention, the 3rd pipeline is inserted into 100-200mm below the salt bath liquid level.
As a further improvement on the present invention, the quantity for being arranged on the ejector pipe in the salt bath is multiple, institute
State that the quantity of storage salt cellar is identical with the quantity of the ejector pipe, all ejector pipe and all one a pair of the storage salt cellar
It should set, all storage salt cellars are connected by second pipeline with the condenser high temperature inlet.
As a further improvement on the present invention, it is both provided with the control valve that can adjust rate-of flow on each ejector pipe
Door.
As a further improvement on the present invention, the quantity of the saline slot is three, and three saline slots are successively side by side
Set, by pipeline connection between adjacent two saline slots, three saline slots be respectively first order saline slot,
Second level saline slot and third level saline slot, the first order saline slot and the condenser by the 4th pipeline connection,
The third level saline slot passes through first pipeline connection with the salt bath.
As a further improvement on the present invention, it is provided with salt separator in the saline slot.
As a further improvement on the present invention, it is provided between the low-temperature outlet of the condenser and the circulating cooling tower
Heat exchanger.
A kind of working method of hardening media temperature control equipment of the present invention is, by deionized water or the cleaning nitre of recycling
In the brine deposit saline slot that piece surface is formed after salt quenching, and pass through the bottom that the first pipeline is passed through ejector pipe, in injection
It contacts directly and vaporizes with high temperature salt made from earth containing a comparatively high percentage of sodium chloride in pipe, form substantial amounts of high-temperature steam, by high temperature salt made from earth containing a comparatively high percentage of sodium chloride injection to storage salt cellar, storing up
Salt made from earth containing a comparatively high percentage of sodium chloride and water vapour separation, salt made from earth containing a comparatively high percentage of sodium chloride are back to by the 3rd pipeline in salt bath in salt cellar, and it is cold that water vapour enters condenser progress
Solidifying to become liquid, reflux salt made from earth containing a comparatively high percentage of sodium chloride temperature is at 300-350 DEG C, and steam temperature is at 250-300 DEG C.The present invention is to utilize deionized water
Or the Vaporizing cooling high temperature salt made from earth containing a comparatively high percentage of sodium chloride of brine, while realize that salt made from earth containing a comparatively high percentage of sodium chloride is separated with water vapour；By the flow for adjusting water in ejector pipe
The cooling capacity of temperature control equipment can be controlled with pressure.Deionized water or salt made from earth containing a comparatively high percentage of sodium chloride brine cool down high temperature melting as salt bath
Salt once cools down medium, while recirculated water cools down the water that salt bath once cools down generation as secondary cooling medium in condenser
Steam；Salt bath trench bottom is inserted into ejector pipe bottom, and water is introduced by drainage tube, is transported to ejector pipe bottom, and drainage tube and
Saline slot is connected by the first pipeline, and the water vapour that condenser condenses out also is recovered into saline slot；3rd pipeline will draw
The high-temperature molten salt shot out is back to salt bath, and the fused salt after reflux plays the role of stirring salt bath fused salt；Saline slot recycles
The brine that condenser condenses out introduces ejector pipe by the first pipeline, carries out cooling and the injection of salt bath high-temperature molten salt, together
When by the flow of water inside control valve control pipeline, control the cooling capacity of entire temperature control equipment；Condenser
After water and high-temperature vapor heat exchange in interior condenser tube, spraying cooling is carried out by circulation conveying to cooling tower, is cooled down by controlling
Tower is connected the valve of pipeline with condenser, controls the condensing capacity of condenser；Saline slot is divided into one that three-level is connected with condenser
What grade was connected with ejector pipe is three-level, is connected per level-one saline slot by water pump, and three-level saline slot water deficiency passes through two level salt
Sink supplements, and two level saline slot deficiency is supplemented by level-one saline slot, and level-one saline slot deficiency is supplemented from the external world.
When specifically used：
Water-washing desalting will be carried out to the material after quenching heat treatment or piece surface, the brine recycling of formation enters brine
As primary cooling water in slot, then primary cooling water, which is pumped into ejector pipe, makes cooling water be contacted directly with high temperature salt made from earth containing a comparatively high percentage of sodium chloride,
The vaporization of moment, realizes the cooling of salt made from earth containing a comparatively high percentage of sodium chloride when being contacted using water and high-temperature molten salt, while injection salt made from earth containing a comparatively high percentage of sodium chloride and enters storage salt cellar, this
A process forms substantial amounts of water vapour, the also salt made from earth containing a comparatively high percentage of sodium chloride containing certain ingredients in water vapour, since steam temperature is very high, at this time
Salt made from earth containing a comparatively high percentage of sodium chloride be crystalline solid particle form exist；The water vapour for mixing salt made from earth containing a comparatively high percentage of sodium chloride particle is imported into condenser, and water is realized in condenser
The cooling of steam, water droplet after cooling by salt made from earth containing a comparatively high percentage of sodium chloride grain dissolution, are discharged to by pipeline in saline slot just, reach salt made from earth containing a comparatively high percentage of sodium chloride recycling
Purpose.
The cooling medium of condenser is connected with the tank of cooling tower, and cooling tower tank is beaten cooling water by water pump
Enter condenser cooling pipe, the condensation of water vapour is realized by cooling pipe, the cooling water after heat exchange is thus lifted to cooling tower spray
Leaching is got off, and realizes the heat dissipation of cooling water, and the cooling water after heat dissipation enters the tank of cooling tower, so as to fulfill the exclusion of heat,
The heat of whole process high-temperature heat treatment part by a water cooling and secondary water cooling, is dissipated by cooling tower.
According to actual needs, the methods for cooling of cooling tower can also be changed, by the heat of the high-temperature-hot-water of condenser reflux
It is recycled, is incorporated to heat distribution pipe network, the so recycling so as to fulfill whole process heat.
The present invention recycles residual salt by setting salt separator in saline slot, using the method for distillation, realizes salt moisture
From the water after distillation can be otherwise utilized；Remaining brine is pumped into the ejector pipe in salt bath Nei and carries out one to high temperature salt made from earth containing a comparatively high percentage of sodium chloride
Secondary cooling can remain certain water in high temperature salt made from earth containing a comparatively high percentage of sodium chloride, and about in 0.06-0.09%, this part water rises content in high temperature salt made from earth containing a comparatively high percentage of sodium chloride
To the requirement for improving quenching intensity, but this part water can not stablize presence for a long time inside high temperature salt made from earth containing a comparatively high percentage of sodium chloride, evaporate
It goes, but entire injection and the unified operating of cooling system, the salt made from earth containing a comparatively high percentage of sodium chloride of cooling for reflux will be in a kind of water saturation state, so salt bath
This part water that slot dissipates needs whole system to give supplement, can be by adjusting the residual salt scavenger in salt bath quenching surface
Skill accomplishes the water of outer benefit and cleans the balance of increased water, so as to fulfill the material balance of whole flow process water.
Beneficial effects of the present invention are：
1st, the present invention is by the brine collection that the brine of condenser recycling and cleaning salt bath quenching part generate to saline slot,
After precipitating impurity therein and iron scale, salt bath ejector pipe is transported to by pump valve, realize primary cooling water and
The material balance recycling of the residual salt in surface, externally without being arranged outside salt made from earth containing a comparatively high percentage of sodium chloride, meet the requirement of environmental protection.
2nd, the present invention is controlled the heat transfer process of the cooling of primary cooling water and high temperature salt made from earth containing a comparatively high percentage of sodium chloride in a phase by ejector pipe
Inside the ejector pipe of safety, this process ejector pipe not only realizes the cooling of high temperature salt made from earth containing a comparatively high percentage of sodium chloride, and realize will be after cooling
Salt made from earth containing a comparatively high percentage of sodium chloride injection realizes the separation of high temperature salt made from earth containing a comparatively high percentage of sodium chloride and water vapour, high temperature salt made from earth containing a comparatively high percentage of sodium chloride is back to salt bath to external storage salt cellar in storage salt cellar
Slot, steam enter condenser；This process controls the flow of ejector pipe water that can accurately control apparatus of the present invention by valve
Cooling capacity.
3rd, the present invention controls the cooling energy of whole production line by the quantity of unlatching by arranging several ejector pipes
Power；Individually storage salt cellar, last and condenser integrate for each ejector pipe design.
4th, the present invention realizes the heat exchange of water and high temperature salt made from earth containing a comparatively high percentage of sodium chloride, then using water as medium is once cooled down in ejector pipe
The separation of salt made from earth containing a comparatively high percentage of sodium chloride and water vapour after cooling is realized in storage salt cellar, condenser is recycled to be situated between using recirculated water secondary cooling the most
Matter, realizes the condensation recycling of saliferous water vapour, and the brine of the brine finally recycled and cleaning salt bath piece surface enters salt together
Sink, salt made from earth containing a comparatively high percentage of sodium chloride are recycled, and the brine then recycled, which is re-used as once cooling down medium, is transported to ejector pipe, again with high temperature salt made from earth containing a comparatively high percentage of sodium chloride
Realize heat exchange, whole process realizes the cooling of salt made from earth containing a comparatively high percentage of sodium chloride and recycling, the control of temperature, reaches the closed-loop control of temperature, material.
Description of the drawings
It in order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is a kind of structure diagram of hardening media temperature control equipment of the present invention.
1, salt bath in figure；2nd, saline slot；3rd, condenser；4th, salt cellar is stored up；5th, ejector pipe；6th, the first pipeline；7th, the second pipe
Road；8th, the 3rd pipeline；9th, the 4th pipeline.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical scheme will be carried out below
Detailed description.Obviously, described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are obtained all on the premise of creative work is not made
Other embodiment belongs to the scope that the present invention is protected.
As shown in Figure 1, the present invention provides a kind of hardening media temperature control equipment, including salt bath 1, saline slot 2, cold
Condenser 3, storage salt cellar 4 and ejector pipe 5 are contained metal material after nitrate quenching in saline slot 2 through the washing process after heat treatment
Material or the residual salt of piece surface clean the brine to be formed, and the high-temperature molten salt for salt bath quenching is contained in salt bath 1；Ejector pipe 5
Lower end is inserted into 200-1000mm below 1 high temperature salt made from earth containing a comparatively high percentage of sodium chloride liquid level of salt bath, and the other end is connected with 5 inner cavity of storage salt cellar；5 energy of ejector pipe
High-temperature molten salt injection in salt bath 1 is entered to store up in salt cellar 5；Saline slot 2 is connected by the first pipeline 6 with 5 inner cavity of ejector pipe, the
Brine in saline slot 2 can be transported in 5 inner cavity of ejector pipe and be mixed with high-temperature molten salt by one pipeline 6；It is provided on first pipeline 6
Pump；Exhaust outlet and refluxing opening are provided on storage salt cellar 4, exhaust outlet is connected with 3 high temperature inlet of condenser by the second pipeline 7, is returned
Head piece is connected with salt bath 1 by the 3rd pipeline 8；The hot outlet of condenser 3 is connected with saline slot 2 by the 4th pipeline 9, cold
The low-temperature inlet and low-temperature outlet of condenser 3 pass through the 5th pipeline connection with circulating cooling tower respectively.The present invention utilizes washing process
The residual salt of metal material surface after nitrate quenching is recycled, is cleaned to metal material or part, the brine of formation is made
It is driven into once to cool down medium in ejector pipe 5, for realizing the cooling of high temperature salt made from earth containing a comparatively high percentage of sodium chloride and cycling；It is cold in high temperature salt made from earth containing a comparatively high percentage of sodium chloride simultaneously
But in reflux course, the salt made from earth containing a comparatively high percentage of sodium chloride of reflux plays the role of stirring to entire salt bath 1, ensure that the constant of 1 temperature of salt bath
And uniformity.
It is high temperature salt made from earth containing a comparatively high percentage of sodium chloride in salt bath 1 as optional embodiment, salt made from earth containing a comparatively high percentage of sodium chloride temperature is at 450-600 DEG C, adaptation high temperature
The metal material of austenitizing carries out isothermal salt bath quenching, this temperature range is suitble to the sorbite of medium and high carbon steel to quench.
In order to facilitate the reflux of salt made from earth containing a comparatively high percentage of sodium chloride in storage salt cellar 4, the application is positioned above 1 position of salt bath by salt cellar 4 is stored up, and flows back
Mouth and exhaust outlet are separately positioned on the bottom and top of storage salt cellar 4, and salt bath 1 is arranged side by side with saline slot 2, and condenser 3 is set
Above saline slot 2.
Due to the high temperature and corrodible property of salt made from earth containing a comparatively high percentage of sodium chloride, ejector pipe 5,4 and the 3rd pipeline 8 of storage salt cellar use heat-resistance stainless steel material
Matter is made.3rd pipeline 8 is inserted into 100-200mm positions below 1 liquid level of salt bath；
In order to improve the cooling capacity of temperature control equipment, the quantity of the ejector pipe 5 being arranged in salt bath 1 be it is multiple,
The quantity of storage salt cellar 4 is identical with the quantity of ejector pipe 5, and all ejector pipes 5 are corresponded with all storage salt cellars 4 to be set, institute
Some storage salt cellars 4 are connected by the second pipeline 7 with 3 high temperature inlet of condenser.Jie can be adjusted by being both provided on each ejector pipe 5
The control valve of mass flow amount.
In order to precipitate the impurity in recovered brine, the quantity of saline slot 2 is three, and three saline slots 2 are arranged side by side successively,
By pipeline connection between two adjacent saline slots 2, three saline slots 2 are respectively first order saline slot, second level brine
Slot and third level saline slot, first order saline slot are connected with condenser 3 by the 4th pipeline 9, third level saline slot and salt bath 1
It is connected by the first pipeline 6.
When the brine strength of recycling is very big, by the way that salt separator is set to carry out salt to the brine of recycling in saline slot 2
With the separation of water.
In order to which the heat of recycling is utilized, heat exchange is provided between the low-temperature outlet and circulating cooling tower of condenser 3
Device.Heat exchanger is connected with heat supply, bathing or other purposes equipment after the heat that cooling water recycles is recycled and carries out heat again
It utilizes.
A kind of working method of hardening media temperature control equipment of the present invention is：
In the brine deposit saline slot 2 that piece surface after deionized water or the cleaning nitrate quenching of recycling is formed, and
The bottom of ejector pipe 5 is passed through by the first pipeline 6, contacts directly and vaporizes with high temperature salt made from earth containing a comparatively high percentage of sodium chloride in ejector pipe 5, is formed a large amount of
High-temperature steam, by high temperature salt made from earth containing a comparatively high percentage of sodium chloride injection to storage salt cellar 4, storage salt cellar 4 in salt made from earth containing a comparatively high percentage of sodium chloride and water vapour separation, salt made from earth containing a comparatively high percentage of sodium chloride pass through the 3rd pipe
Road 8 is back in salt bath 1, and water vapour, which enters condenser 3, to carry out condensation and become liquid, reflux salt made from earth containing a comparatively high percentage of sodium chloride temperature at 300-350 DEG C,
Steam temperature is at 250-300 DEG C.The cold of temperature control equipment can be controlled by adjusting the flow of water and pressure in ejector pipe 5
But ability.Deionized water or salt made from earth containing a comparatively high percentage of sodium chloride brine cool down high-temperature molten salt as salt bath 1 and once cool down medium, while in condenser 3
Recirculated water cools down the water vapour that salt bath 1 once cools down generation as secondary cooling medium；Salt bath is inserted into 5 bottom of ejector pipe
1 bottom, water are introduced by the first pipeline 6, are transported to 5 bottom of ejector pipe, and the water vapour that condenser 3 condenses out also is recovered
Into saline slot 2；The high-temperature molten salt that injection comes out is back to salt bath 1 by the 3rd pipeline 8, and the fused salt after reflux plays stirring salt
The effect of 1 fused salt of bath；Saline slot 2 recycles the brine that condenser 3 condenses out, and ejector pipe 5 is introduced by the first pipeline 6, into
The cooling of 1 high-temperature molten salt of row salt bath and injection, while by the flow of water inside a control valve control pipeline, control whole
The cooling capacity of a temperature control equipment；After water and high-temperature vapor heat exchange in 3 interior condenser tube of condenser, arrived by circulation conveying
Cooling tower carries out spraying cooling, is connected by controlling cooling tower with condenser 3 valve of pipeline, controls the condensation energy of condenser 3
Power；Saline slot 2 divides be connected with ejector pipe 5 for three-level and the level-one that condenser 3 is connected to be three-level, passes through per level-one saline slot
Water pump is connected, and three-level saline slot water deficiency is supplemented, two level saline slot deficiency is mended by level-one saline slot by two level saline slot
It fills, level-one saline slot deficiency is supplemented from the external world.
Water-washing desalting will be carried out to the material after quenching heat treatment or piece surface, the brine recycling of formation enters brine
As primary cooling water in slot 2, then primary cooling water, which is pumped into ejector pipe 5, makes cooling water directly be connect with high temperature salt made from earth containing a comparatively high percentage of sodium chloride
It touches, the vaporization of moment, realizes the cooling of salt made from earth containing a comparatively high percentage of sodium chloride, while injection salt made from earth containing a comparatively high percentage of sodium chloride and enters storage salt cellar when being contacted using water and high-temperature molten salt
4, this process forms substantial amounts of water vapour, the also salt made from earth containing a comparatively high percentage of sodium chloride containing certain ingredients in water vapour, since steam temperature is very high,
Salt made from earth containing a comparatively high percentage of sodium chloride at this time is that crystalline solid particle form exists；The water vapour for mixing salt made from earth containing a comparatively high percentage of sodium chloride particle is imported into condenser 3, in condenser 3
Realize the cooling of water vapour, water droplet after cooling by salt made from earth containing a comparatively high percentage of sodium chloride grain dissolution, is discharged in saline slot 2 by pipeline just, reaches nitre
The purpose of salt recycling.
The cooling medium of condenser 3 is connected with the tank of cooling tower, and cooling tower tank is by water pump by cooling water
3 cooling pipe of condenser is squeezed into, the condensation of water vapour is realized by cooling pipe, the cooling water after heat exchange is thus lifted to cooling tower
Spray gets off, and realizes the heat dissipation of cooling water, and the cooling water after heat dissipation enters the tank of cooling tower, so as to fulfill the row of heat
It removes, the heat of whole process high-temperature heat treatment part by a water cooling and secondary water cooling, is dissipated by cooling tower.
According to actual needs, the methods for cooling of cooling tower can also be changed, the heat for the high-temperature-hot-water that condenser 3 is flowed back
It is recycled, is incorporated to heat distribution pipe network, the so recycling so as to fulfill whole process heat.
The present invention recycles residual salt by setting salt separator in saline slot 2, using the method for distillation, realizes salt moisture
From the water after distillation can be otherwise utilized；Remaining brine is pumped into the ejector pipe 5 in salt bath 1 Nei and high temperature salt made from earth containing a comparatively high percentage of sodium chloride is carried out
It once cools down, certain water can be remained in high temperature salt made from earth containing a comparatively high percentage of sodium chloride, content is about in 0.06-0.09%, this part water is in high temperature salt made from earth containing a comparatively high percentage of sodium chloride
The requirement for improving quenching intensity is played, but this part water can not stablize presence for a long time inside high temperature salt made from earth containing a comparatively high percentage of sodium chloride, evaporate
It goes out, but entire injection and the unified operating of cooling system, the salt made from earth containing a comparatively high percentage of sodium chloride of cooling for reflux will be in a kind of water saturation state, so salt
This part water that bath 1 dissipates needs whole system to give supplement, can be by adjusting the residual salt cleaning in salt bath quenching surface
Technique accomplishes the water of outer benefit and cleans the balance of increased water, so as to fulfill the material balance of whole flow process water.
Embodiment 1：
The present invention is applied in Gao Xian factories carry out the big specification bridge rope steel of online salt bath exploitation, wire rod specification 14mm, per small
When yield salt made from earth containing a comparatively high percentage of sodium chloride 500t is contained in 100 tons, salt bath 1, high temperature wire rod continuity, which enters in salt bath 1, to be quenched, salt bath
Salt made from earth containing a comparatively high percentage of sodium chloride carries out heat exchange with wire rod in slot 1, and control wire rod carries heat and causes salt made from earth containing a comparatively high percentage of sodium chloride Wen Sheng, and temperature controlling step is carried out such as to salt made from earth containing a comparatively high percentage of sodium chloride
Under：
A, it is high temperature salt made from earth containing a comparatively high percentage of sodium chloride to be heat-treated in salt bath 1, and for salt made from earth containing a comparatively high percentage of sodium chloride temperature at 500 DEG C, salt made from earth containing a comparatively high percentage of sodium chloride is potassium nitrate and sodium nitrate；
B, 310s heat-resistance stainless steels are selected as ejector pipe 5,5 diameter 35mm of ejector pipe, 5 lower end of ejector pipe insertion salt bath
1000mm below 1 high temperature salt made from earth containing a comparatively high percentage of sodium chloride liquid level, upper end are connected with the storage salt cellar 4 of a 304 heat resisting steel materials；
C, storing up has another 310s heat-resistance stainless steels the 3rd pipeline 8 of reflux on 5 bottom of salt cellar, the 3rd pipeline 8 of reflux is another
End is inserted into 200mm below 1 liquid level of salt bath；
D, storage salt cellar 4 is connected with condenser 3, and condenser 3 is used for cooling down high temperature saliferous water vapour, has inside condenser 3 cold
Pipeline is coagulated, has recirculated water inside condensation pipe；
7% salt made from earth containing a comparatively high percentage of sodium chloride brine of salt made from earth containing a comparatively high percentage of sodium chloride content is passed through to the bottom of ejector pipe 5, directly connect with high temperature salt made from earth containing a comparatively high percentage of sodium chloride in ejector pipe 5 e,
The raw vaporization of triggering, forms substantial amounts of high-temperature steam, by high temperature salt made from earth containing a comparatively high percentage of sodium chloride injection to storage salt cellar 4, salt made from earth containing a comparatively high percentage of sodium chloride and water vapour in storage salt cellar 4
Separation, salt made from earth containing a comparatively high percentage of sodium chloride return to salt bath 1 by return duct, and water vapour, which enters condenser 3, to carry out condensation and become liquid, and flow back salt made from earth containing a comparatively high percentage of sodium chloride temperature
At 350 DEG C, steam temperature is at 250 DEG C.The Vaporizing cooling high temperature salt made from earth containing a comparatively high percentage of sodium chloride of deionized water or brine is utilized in this process,
Realize that salt made from earth containing a comparatively high percentage of sodium chloride is separated with water vapour simultaneously.The cooling capacity of the invention can be controlled by the flow and pressure that adjust water.
Salt made from earth containing a comparatively high percentage of sodium chloride brine cools down high-temperature molten salt as salt bath 1 and once cools down medium, at the same in condenser 3 recirculated water as two
It is secondary to cool down medium to cool down the water vapour that salt bath 1 once cools down generation；
5 bottom of ejector pipe, 1 bottom of insertion salt bath, water are introduced by the first pipeline 6, are transported to 5 bottom of ejector pipe, and
First pipeline 6 is connected with saline slot 2, and the water vapour that condenser 3 condenses out also is recovered into saline slot 2；
The high-temperature molten salt that injection comes out is back to salt bath 1 by second pipeline 8 that flows back, and the fused salt after reflux plays stirring salt
The effect of 1 fused salt of bath, salt bath temperature fluctuation ± 5 DEG C；
Saline slot 2 recycles the brine that condenser 3 condenses out, and ejector pipe 5 is introduced by the first pipeline 6, using 8 injections
Pipe 5 cools down salt bath 1, carries out cooling and the injection of 1 high-temperature molten salt of salt bath, the flow of 5 pipeline of ejector pipe the inside water
For 1t/h；
After water and high-temperature vapor heat exchange in 3 interior condenser tube of condenser, by circulation conveying to cooling tower spray cold
But, it is connected by controlling cooling tower with condenser 3 valve of pipeline, controls the condensing capacity of condenser 3,3 inside of condenser is cold
But the flow of water is 50t/h；
Saline slot 2 divides be connected with ejector pipe 5 for three-level and the level-one that condenser 3 is connected to be three-level, per level-one brine
Slot is connected by water pump, and three-level saline slot water deficiency is supplemented, two level saline slot deficiency passes through level-one brine by two level saline slot
Slot supplements, and level-one saline slot deficiency is supplemented from the external world.
By changing 1 constant temperature of salt bath of technology controlling and process, the wire rod tensile strength produced is fluctuated in ± 30MPa, steel
Silk torsion index 100% is qualified, disclosure satisfy that bridge rope zinc-coated wire production requirement more than 1960Mpa intensity ranks.
Embodiment 2：
The present invention is applied carries out the isothermal hardening of the parts such as bearing, gear, spring in heat treatment department, at the hour of part
Reason ability contains salt made from earth containing a comparatively high percentage of sodium chloride 150t inside 20t, salt bath 1, and part continuity enters salt bath 1 and quenched, control heat treatment
Part carries heat and causes salt made from earth containing a comparatively high percentage of sodium chloride Wen Sheng, and it is as follows to carry out temperature controlled step to salt made from earth containing a comparatively high percentage of sodium chloride：
A, it is high temperature salt made from earth containing a comparatively high percentage of sodium chloride to be heat-treated in salt bath 1, and for salt made from earth containing a comparatively high percentage of sodium chloride temperature at 450 DEG C, salt made from earth containing a comparatively high percentage of sodium chloride is potassium nitrate and sodium nitrate；
B, 310s heat-resistance stainless steels are selected as ejector pipe 5,5 diameter 25mm of ejector pipe, 5 lower end of ejector pipe insertion salt bath
200mm below 1 high temperature salt made from earth containing a comparatively high percentage of sodium chloride liquid level, upper end are connected with the storage salt cellar 4 of a 304 heat resisting steel materials；
C, storing up has another 310s heat-resistance stainless steels the 3rd pipeline 8 of reflux on 4 bottom of salt cellar, the 3rd pipeline 8 of reflux is another
End may be inserted into 300mm below 1 liquid level of salt bath；
D, storage salt cellar 4 is connected with condenser 3, and condenser 3 is used for cooling down high temperature saliferous water vapour, has inside condenser 3 cold
Pipeline is coagulated, has recirculated water inside condensation pipe.
5% salt made from earth containing a comparatively high percentage of sodium chloride brine of salt made from earth containing a comparatively high percentage of sodium chloride content is passed through to the bottom of ejector pipe 5, directly connect with high temperature salt made from earth containing a comparatively high percentage of sodium chloride in ejector pipe 5 e,
The raw vaporization of triggering, forms substantial amounts of high-temperature steam, by high temperature salt made from earth containing a comparatively high percentage of sodium chloride injection to storage salt cellar 4, salt made from earth containing a comparatively high percentage of sodium chloride and water vapour in storage salt cellar 4
Separation, salt made from earth containing a comparatively high percentage of sodium chloride return to salt bath 1 by the 3rd pipeline 8 that flows back, and water vapour, which enters condenser 3, to carry out condensation and become liquid, flows back
Salt made from earth containing a comparatively high percentage of sodium chloride temperature is at 300 DEG C, and steam temperature is at 300 DEG C.Deionized water or the Vaporizing cooling of brine are utilized in this process
High temperature salt made from earth containing a comparatively high percentage of sodium chloride, while realize that salt made from earth containing a comparatively high percentage of sodium chloride is separated with water vapour.The invention device can be controlled by the flow and pressure that adjust water
Cooling capacity.
Salt made from earth containing a comparatively high percentage of sodium chloride brine cools down high-temperature molten salt as salt bath 1 and once cools down medium, at the same in condenser 3 recirculated water as two
It is secondary to cool down medium to cool down the water vapour that salt bath 1 once cools down generation；
5 bottom of ejector pipe, 1 bottom of insertion salt bath, water are introduced by the first pipeline 6, are transported to 5 bottom of ejector pipe, and
First pipeline 6 is connected with saline slot 2, and the water vapour that condenser 3 condenses out also is recovered into saline slot 2；
The high-temperature molten salt that injection comes out is back to salt bath 1 by the 3rd pipeline 8 that flows back, and the fused salt after reflux plays stirring salt
The effect of 1 fused salt of bath, 1 temperature fluctuation ± 3 DEG C of salt bath；
Saline slot 2 recycles the brine that condenser 3 condenses out, and ejector pipe 5 is introduced by pipeline, right using 3 ejector pipes 5
Salt bath 1 is cooled down, and carries out cooling and the injection of 1 high-temperature molten salt of salt bath, and the flow of 5 pipeline of ejector pipe the inside water is
0.3t/h；
After water and high-temperature vapor heat exchange in 3 interior condenser tube of condenser, by circulation conveying to cooling tower spray cold
But, it is connected by controlling cooling tower with condenser 3 valve of pipeline, controls the condensing capacity of condenser 3,3 inside of condenser is cold
But the flow of water is 10t/h；
Saline slot 2 divides be connected with ejector pipe 5 for three-level and the level-one that condenser 3 is connected to be three-level, per level-one brine
Slot is connected by water pump, and three-level saline slot water deficiency is supplemented, two level saline slot deficiency passes through level-one brine by two level saline slot
Slot supplements, and level-one saline slot deficiency is supplemented from the external world.
By changing 1 constant temperature of salt bath of technology controlling and process, the part produced does not have heat treatment deformation, can extensive use
On automobile and mechanical device.
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in change or replacement, should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of hardening media temperature control equipment, it is characterised in that：Including salt bath (1), saline slot (2), condenser (3),
Salt cellar (4) and ejector pipe (5) are stored up, wherein：
It contains metal material after nitrate quenching or piece surface in the saline slot (2) through the washing process after heat treatment
Residual salt cleans the brine to be formed, and the high-temperature molten salt for salt bath quenching is contained in the salt bath (1)；
Described ejector pipe (5) one end is arranged in the salt bath (1), and the other end is connected with the storage salt cellar (4)；The injection
Pipe (5) can enter the high-temperature molten salt injection in the salt bath (1) in the storage salt cellar (4)；
The saline slot (2) is connected by the first pipeline (6) with the ejector pipe (5) inner cavity, and first pipeline (6) can be by institute
It states the brine in saline slot (2) and is transported in the ejector pipe (5) inner cavity and mixed with high-temperature molten salt；
Exhaust outlet and refluxing opening are provided on the storage salt cellar (4), the exhaust outlet passes through with the condenser (3) high temperature inlet
Second pipeline (7) connects, and the refluxing opening is connected with the salt bath (1) by the 3rd pipeline (8)；
The hot outlet of the condenser (3) is connected with the saline slot (2) by the 4th pipeline (9), the condenser (3)
Low-temperature inlet and low-temperature outlet pass through the 5th pipeline connection with circulating cooling tower respectively.
2. hardening media temperature control equipment according to claim 1, it is characterised in that：The storage salt cellar (4) is higher than institute
Salt bath (1) setting is stated, the refluxing opening and the exhaust outlet are separately positioned on the bottom and top of the storage salt cellar (4), institute
It states salt bath (1) to be arranged side by side with the saline slot (2), the condenser (3) is arranged on above the saline slot (2).
3. hardening media temperature control equipment according to claim 1, it is characterised in that：The ejector pipe (5), the storage
Salt cellar (4) and the 3rd pipeline (8) are made of heat-resistance stainless steel material.
4. hardening media temperature control equipment according to claim 1, it is characterised in that：It inserts ejector pipe (5) lower end
Enter to 200-1000mm below the salt bath (1) high temperature salt made from earth containing a comparatively high percentage of sodium chloride liquid level.
5. hardening media temperature control equipment according to claim 3, it is characterised in that：3rd pipeline (8) insertion
100-200mm below to the salt bath (1) liquid level.
6. the hardening media temperature control equipment according to any one of claim 1-5, it is characterised in that：It is arranged on described
The quantity of the ejector pipe (5) in salt bath (1) is multiple, the quantity of the storage salt cellar (4) and the number of the ejector pipe (5)
It measures identical, all ejector pipe (5) and corresponds setting, all storage salt cellars with all storage salt cellars (4)
(4) connected by second pipeline (7) with the condenser (3) high temperature inlet.
7. hardening media temperature control equipment according to claim 6, it is characterised in that：On each ejector pipe (5)
The control valve of rate-of flow can be adjusted by being both provided with.
8. hardening media temperature control equipment according to claim 1, it is characterised in that：The quantity of the saline slot (2)
For three, three saline slots (2) are arranged side by side successively, are connected between adjacent two saline slots (2) by pipeline
Logical, three saline slots (2) are respectively first order saline slot, second level saline slot and third level saline slot, the first order
Saline slot is connected with the condenser (3) by the 4th pipeline (9), the third level saline slot and the salt bath (1)
It is connected by first pipeline (6).
9. hardening media temperature control equipment according to claim 1, it is characterised in that：It is set in the saline slot (2)
There is salt separator.
10. hardening media temperature control equipment according to claim 1, it is characterised in that：The low temperature of the condenser (3)
Heat exchanger is provided between outlet and the circulating cooling tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810067122.0A CN108048629A (en) | 2018-01-23 | 2018-01-23 | A kind of hardening media temperature control equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810067122.0A CN108048629A (en) | 2018-01-23 | 2018-01-23 | A kind of hardening media temperature control equipment |
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| CN108048629A true CN108048629A (en) | 2018-05-18 |
Family
ID=62124505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810067122.0A Pending CN108048629A (en) | 2018-01-23 | 2018-01-23 | A kind of hardening media temperature control equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117488030A (en) * | 2023-12-21 | 2024-02-02 | 盐城市鑫纬嘉新能源科技有限公司 | Ductile iron isothermal quenching cooling device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4175730A (en) * | 1974-07-12 | 1979-11-27 | Firma Carl Canzler | Device for cooling a quenching bath of melted salt |
| CN104313267A (en) * | 2014-10-07 | 2015-01-28 | 唐山亚捷机械有限公司 | Device for realizing salt and water recycling by utilizing salt quenching waste heat |
-
2018
- 2018-01-23 CN CN201810067122.0A patent/CN108048629A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4175730A (en) * | 1974-07-12 | 1979-11-27 | Firma Carl Canzler | Device for cooling a quenching bath of melted salt |
| CN104313267A (en) * | 2014-10-07 | 2015-01-28 | 唐山亚捷机械有限公司 | Device for realizing salt and water recycling by utilizing salt quenching waste heat |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117488030A (en) * | 2023-12-21 | 2024-02-02 | 盐城市鑫纬嘉新能源科技有限公司 | Ductile iron isothermal quenching cooling device |
| CN117488030B (en) * | 2023-12-21 | 2024-03-19 | 盐城市鑫纬嘉新能源科技有限公司 | Ductile iron isothermal quenching cooling device |
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