CN116497188A - Water quenching tank and method for adjusting water quenching tank process - Google Patents
Water quenching tank and method for adjusting water quenching tank process Download PDFInfo
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- CN116497188A CN116497188A CN202310283452.4A CN202310283452A CN116497188A CN 116497188 A CN116497188 A CN 116497188A CN 202310283452 A CN202310283452 A CN 202310283452A CN 116497188 A CN116497188 A CN 116497188A
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- 238000010791 quenching Methods 0.000 title claims abstract description 300
- 230000000171 quenching effect Effects 0.000 title claims abstract description 286
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 238000000034 method Methods 0.000 title claims abstract description 50
- 230000008569 process Effects 0.000 title claims abstract description 36
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 127
- 239000010959 steel Substances 0.000 claims abstract description 127
- 239000007788 liquid Substances 0.000 claims abstract description 80
- 238000007654 immersion Methods 0.000 claims description 16
- 230000008859 change Effects 0.000 claims description 7
- 238000004364 calculation method Methods 0.000 claims description 3
- 230000001131 transforming effect Effects 0.000 claims 1
- 230000009466 transformation Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000009835 boiling Methods 0.000 description 3
- 210000005056 cell body Anatomy 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 238000005088 metallography Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
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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
- C21D1/62—Quenching devices
- C21D1/63—Quenching devices for bath quenching
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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
-
- 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
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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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/525—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length for wire, for rods
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
The invention provides a water quenching tank and a method for adjusting a water quenching process by using the water quenching tank, wherein a plurality of groups of water quenching devices are arranged in the water quenching tank, each water quenching device comprises a first guide wheel, a first quenching device, a second guide wheel, a third guide wheel, a second quenching device and a fourth guide wheel, a steel wire bypasses the first guide wheel, vertically passes through the first quenching device downwards, bypasses the first third guide wheel of the second guide wheel, vertically passes through the second quenching device upwards, and then leaves the water quenching tank from the fourth guide wheel; the liquid level can be automatically and accurately adjusted in the first quenching device and the second quenching device, so that the immersed length of the steel wire in the first quenching device and the second quenching device and the length of the air section in the middle can be accurately adjusted; in addition, the vertical wire-running quenching mode and the independent quenching process of each wire in a separated way can stabilize the structure transformation during the quenching of the wire and improve the strength and quality of the wire.
Description
Technical Field
The invention relates to the field of water quenching technology for producing steel cords, in particular to a water quenching tank and a method for adjusting the technology of the water quenching tank.
Background
In the existing steel cord production process, quenching treatment is needed for the steel wire, and as the heat conduction coefficient of water is extremely high, nuclear boiling can occur to form martensite when the steel wire contacts with water before the conversion of the steel wire is not completed. To avoid this, non-isothermal quenching is typically achieved using AQ solution (polyacrylate) as the coolant; film boiling occurs after the steel wire enters the AQ solution, and the steel wire is surrounded by a vapor film generated by the film boiling, so that the cooling speed of the steel wire is stabilized. I found problems and influencing factors of the water quenching process in the production process of the steel cord:
1. the existing quenching process is that a plurality of steel wires enter the quenching tank from the wire dividing tank for quenching, so that the AQ solution between the steel wires is too high in temperature and even can be boiled, a steam film is unstable, the transition of the steel wire structure is affected to cause metallographic phase abnormality, and the strength of the steel wires can be reduced due to the higher AQ solution temperature.
2. The depth of immersion of the wire is one of factors affecting the thickness of the vapor film and thus affecting the heat conduction rate, and before the vapor escapes from the vapor film, the pressure in the vapor film must reach at least the pressure of the water to which the vapor film is subjected, and the deeper the wire is immersed, the higher the pressure to which the vapor film is subjected, and the thicker the vapor film is. The existing quenching tank is horizontally placed, the pressure above and below the steel wire is different, so that the thickness of a steam film above the steel wire is different from that below the steel wire, and the heat conduction rate above and below the steel wire is different to influence the transformation of the steel wire structure.
3. The water quenching process can be regulated in three ways, the wire immersion length in the quench WT1, the wire immersion length in the quench WT2 and the length of the air segment between the quench WT1 and the quench WT2, which process regulation can greatly affect the strength of the wire. The length of the quenching device WT1 and the length of the quenching device WT2 are adjusted through the baffles at the two sides of the quenching tank during production, the adjustment mode is complex, a lot of labor is consumed, and the length of each steel wire in the quenching device WT1 and the quenching device WT2 cannot be accurately adjusted.
Aiming at the defects, I develop a water quenching tank and a method for adjusting the water quenching process.
Disclosure of Invention
The invention solves the technical problems that: in the existing water quenching process for producing the steel cord, the steam film temperature of the AQ solution is too high, the thickness of the steam film is uneven due to different pressures, and the immersed length of the steel wire and the length of the air section in the quenching device are inconvenient to adjust, so that the quality of the steel cord is poor.
The technical scheme of the invention is as follows:
a water quenching tank comprises a tank body, a first guide wheel, a first quenching device, a second guide wheel, a third guide wheel, a second quenching device and a fourth guide wheel; the groove body comprises a first side wall and a second side wall which are opposite, the first guide wheel is arranged at the top end of the first side wall, the first quenching device and the second guide wheel are both positioned in the groove body and arranged on the first side wall, the second guide wheel is positioned below the first quenching device, the third guide wheel and the second quenching device are both positioned in the groove body and arranged on the second side wall, the third guide wheel is positioned below the second quenching device, and the fourth guide wheel is arranged at the top end of the second side wall;
the first quenching device and the second quenching device are hollow structures, the first quenching device comprises a liquid inlet and a liquid outlet, a liquid level rod capable of moving up and down is arranged in the first quenching device, and liquid enters the first quenching device and is maintained at the height of the liquid level rod; the second quenching device and the first quenching device have the same structure; the steel wire enters from the top end of the first quenching device, passes out from the bottom end of the second quenching device, and passes out from the top end of the second quenching device;
the steel wire bypasses the first guide wheel, enters the groove body, passes through the first quenching device, bypasses the second guide wheel and the third guide wheel, passes through the second quenching device, and finally bypasses the fourth guide wheel and leaves the groove body; the first guide wheel, the first quenching device, the second guide wheel, the third guide wheel, the second quenching device and the fourth guide wheel are a group of water quenching devices, and each steel wire corresponds to a group of water quenching devices.
Preferably, the number of sets of water quench units is greater than or equal to the number of wires.
Preferably, scales are arranged on the first quenching device and the second quenching device, the liquid level rod is controlled by an external control device to move up and down and stay at the designated scale position, when the position of the liquid level rod changes, the liquid levels of the liquid in the first quenching device and the liquid level in the second quenching device change, and the immersion lengths of the steel wires in the first quenching device and the second quenching device change.
Preferably, the first quenching device and the second quenching device each comprise an upper part and a lower part, wherein the upper part is arranged in the lower part in a way of moving up and down and forms a cavity for containing AQ solution.
Preferably, the upper portion is controlled by an external control device to move up and down and change the lengths of the first and second quenching devices.
Preferably, a V-shaped groove is further formed in the groove body, and the V-shaped groove is located below the second guide wheel and the third guide wheel.
Preferably, the bottom of the tank body is also provided with a lifting pump, a liquid inlet of the lifting pump is connected with the lower end of the V-shaped groove, and a liquid outlet of the lifting pump is connected with liquid inlets of the first quenching device and the second quenching device.
A method of adjusting a water quenching process using the apparatus of any of the preceding claims, comprising the steps of:
step 1, selecting a first quenching device and a second quenching device with specified diameters according to different diameters of steel wires, and respectively installing the first quenching device and the second quenching device on a first side wall and a second side wall of the groove body;
step 2, calculating the maximum immersed length and the air section length of the steel wire in the first quenching device and the second quenching device according to different steel wire strength grades, and adjusting the upper positions of the first quenching device and the second quenching device so that the lengths of the first quenching device and the second quenching device are larger than the calculated maximum immersed length; the specific calculation formula is as follows:
maximum immersion length of the steel wire in the first quenching apparatus= (0.9058 ×d+0.3909 ×d) ×dv;
NT steel wire: air segment length = (15.994-8.3892 xd) x dv, where air segment length units are centimeters;
HT steel wire: air segment length = (22.578-12.919 xd) x dv, where air segment length units are centimeters;
wherein d is the diameter length value of the steel wire, and v is the running speed value of the steel wire;
step 3, adjusting a liquid level rod in the first quenching device and the second quenching device to a required scale;
step 4, inputting an AQ solution into the first quenching device and the second quenching device through a lifting pump, and keeping the flow of a liquid inlet and the flow of a liquid outlet the same when the liquid level reaches the position of a liquid level rod, wherein the liquid level is kept unchanged;
step 5, each steel wire sequentially passes through a first guide wheel, a first quenching device WT1, a second wheel, a third guide wheel, a second quenching device and a fourth guide wheel which correspond to the steel wire from the wire dividing groove;
and 6, performing a water quenching process.
Preferably, the length of the second quenching device is greater than 40 cm.
Preferably, the strength of the steel wire is improved by 3N/mm per 1 cm of the immersed length of the steel wire in the second quenching apparatus during the transformation of the crystalline phase state of the steel wire.
The beneficial effects of the invention are as follows:
1. each steel wire is provided with a matched quenching device for independent quenching, namely, in the water quenching process, the steel wires are isolated from each other, the temperature of the AQ solution is effectively controlled, the overhigh temperature is avoided, the steam film is more stable, the steel wire structure is more stable, and the strength of the steel wire can be improved.
2. The vertical water quenching device is adopted, the pressure of the periphery of the steel wire is the same, so that the thickness of a vapor film around the steel wire is the same, the heat conduction rate around the steel wire is the same, and the transformation of the steel wire structure is more stable.
3. The water quenching process can precisely adjust the length of the quenching device and the depth of the AQ solution in the quenching device directly through the control device, does not need a great deal of manpower, and can precisely control the immersed length of each steel wire in the first quenching device and the second quenching device and the length of an air section between the first quenching device and the second quenching device, thereby improving the quality of the steel wires.
Drawings
FIG. 1 is a schematic diagram of a water quench tank;
fig. 2 is a schematic structural diagram of a first quenching apparatus and a second quenching apparatus.
Wherein, the groove body-1, the first side wall-11, the second side wall-12; the device comprises a first guide wheel-2, a first quenching device-3, a second guide wheel-4, a third guide wheel-5, a second quenching device-6, a fourth guide wheel-7,V-shaped groove-8, a lifting pump-9, a liquid inlet-91 of the lifting pump and a liquid outlet-92 of the lifting pump;
in the first quenching device and the second quenching device, a liquid inlet-341, a liquid outlet-342, a liquid level rod-343, scales-344, an upper part-345 and a lower part-346 are arranged.
Description of the embodiments
For a further understanding of the objects, construction, features, and functions of the invention, reference should be made to the following detailed description of the preferred embodiments.
Referring to fig. 1 and 2 in combination, the present invention provides a water quenching tank, which includes a tank body 1, a first guide wheel 2, a first quenching device 3, a second guide wheel 4, a third guide wheel 5, a second quenching device 6 and a fourth guide wheel 7; the groove body 1 comprises a first side wall 11 and a second side wall 12 which are opposite, the first guide wheel 2 is arranged at the top end of the first side wall 11, the first quenching device 3 and the second guide wheel 4 are both positioned inside the groove body 1 and arranged on the first side wall 11, the second guide wheel 4 is positioned below the first quenching device 3, the third guide wheel 5 and the second quenching device 6 are both positioned inside the groove body 1 and arranged on the second side wall 12, the third guide wheel 5 is positioned below the second quenching device 6, and the fourth guide wheel 7 is arranged at the top end of the second side wall 12.
The first quenching device 3 and the second quenching device 6 are hollow structures, the first quenching device 3 comprises a liquid inlet 341 and a liquid outlet 342, a liquid level rod 343 capable of moving up and down is arranged in the first quenching device 3, and liquid enters the first quenching device 3 and is maintained at the height of the liquid level rod 343; the second quenching device 6 has the same structure as the first quenching device 3; the steel wire enters from the top end of the first quenching device 3, passes out from the bottom end of the second quenching device 6, and passes out from the top end.
The steel wire bypasses the first guide wheel 2, enters the groove body 1, passes through the first quenching device 3, bypasses the second guide wheel 4 and the third guide wheel 5, passes through the second quenching device 6, and finally bypasses the fourth guide wheel 7 and leaves the groove body 1; the first guide wheel 2, the first quenching device 3, the second guide wheel 4, the third guide wheel 5, the second quenching device 6 and the fourth guide wheel 7 are a group of water quenching devices, and each steel wire corresponds to a group of water quenching devices.
The water quenching tank is internally provided with a plurality of groups of water quenching devices at the same time, wherein a first guide wheel 2, a first quenching device 3, a second guide wheel 4, a third guide wheel 5, a second quenching device 6 and a fourth guide wheel 7 are used as a group, and each group corresponds to one steel wire, so that when the water quenching process is carried out, a plurality of steel wires enter the respective water quenching devices from the branching tank, the steel wires are isolated from each other, the AQ solution temperature is controlled, the condition that the steam film of a cutter is unstable due to the overhigh temperature is avoided, the structure transformation and the metallography of the steel wires are maintained in a better range, and the strength of the steel wires is ensured.
Secondly, the steel wire enters the first quenching device 3 from the first guide wheel 2 and bypasses the second guide wheel 4, and the steel wire is vertically downwards routed to perform water quenching in the process; the steel wire is led out from the second guide wheel 4, bypasses the third guide wheel 5, passes through the second quenching device 6, and finally bypasses the fourth guide wheel 7 to be led out of the water quenching tank, and the steel wire is led to be led upwards vertically in the process. Therefore, the steel wires are vertically routed on the next stage in the water quenching process, the steel wires are immersed in the AQ solution in the first quenching device 3 and the second quenching device 6, the pressures of the steel wires in the circumferential directions are the same, and therefore, when the routing is performed in the water quenching process, the heat conduction speeds of the steel wires are the same and uniform, and the steel wire structure is stable in transition.
In the water quenching tank of the present invention, the first quenching apparatus 3 and the second quenching apparatus 6 can control the height of the AQ solution in the first quenching apparatus 3 and the second quenching apparatus 6 by using the liquid level bar 343 as a positioning pointer, thereby controlling the immersion length of the steel wire. In an embodiment, all the first quenching devices 3 and the second quenching devices 6 may be connected to an external control device, and the electric control element is used to automatically control the in-out and the liquid level of the AQ solution, for example, a liquid level sensor and an electric control device may be installed at the liquid level rod 343, before the water quenching process, the maximum immersion length of the steel wire in the AQ solution of the first quenching device 3 and the second quenching device 6 is calculated according to the self parameters of the steel wire, such as the diameter of the steel wire and the wire running speed, and then the liquid level rod 343 is controlled by the control device to automatically move to a specified height, and the height of the liquid level rod 343 is not greater than the calculated maximum immersion length from the bottom of the first quenching device 3 and the second quenching device 6. After the position of the liquid level rod 343 is adjusted, the AQ solution is respectively injected into the first quenching device 3 and the second quenching device 6 through the control device, the liquid level height in the liquid level rod 343 is controlled through the flow control of the liquid inlet 341 and the liquid outlet 342 until the liquid level of the AQ solution reaches the height of the liquid level rod 343, the liquid level sensor detects and sends a signal to the control device, and the control device controls the inflow and outflow speed of the AQ solution in the first quenching device 3 and the second quenching device 6, so that the liquid level is balanced, and meanwhile, the continuous replacement of the solution can be realized. It should be clear that, in addition to the control method of the above embodiment, other control methods may be used in the present invention to implement automatic control and adjustment of the AQ solutions in the first quenching apparatus 3 and the second quenching apparatus 6. Therefore, the invention can accurately and automatically control the liquid level height of the AQ solution in the first quenching device 3 and the second quenching device 6, thereby accurately controlling the immersion length of the steel wire in the AQ solution, and the length of the air section between the first quenching device 3 and the second quenching device 6 can be accurately adjusted by adjusting the first quenching device 3, the second quenching device 6, the second guide wheel 4 and the third guide wheel 5. And through the accurate adjustment, the strength of the steel wire can be improved to a great extent.
The water quenching tank is improved aiming at influencing factors in multiple aspects of the water quenching process, so that the strength of the steel wire is improved compared with that of the steel wire in the current water quenching process, and the steel wire is accurately controlled without consuming a large amount of manpower, thereby reducing the production cost.
In one embodiment, the number of the groups of the water quenching devices is greater than or equal to the number of the steel wires, and because each steel wire is independently subjected to the water quenching process and is provided with a corresponding group of the water quenching processes, the purpose of separating the steel wires from each other is achieved, and therefore the number of the groups of the water quenching devices is required to be greater than the number of the steel wires, and each steel wire can be subjected to the water quenching process.
In an embodiment, scales 344 are arranged on the first quenching device 3 and the second quenching device 6, the liquid level rod 343 is controlled by an external control device to move up and down and stay at the position of the appointed scales 344, when the position of the liquid level rod 343 is changed, the liquid levels of the liquid in the first quenching device 3 and the second quenching device 6 are changed, and the immersion length of the steel wire in the first quenching device 3 and the second quenching device 6 is changed; the numerical value of the scale 344 is sequentially increased from bottom to top, and the depth of the AQ solution in the first quenching device 3 and the second quenching device 6 is marked, so that the immersion length of the steel wire in the AQ solution is further marked, and the liquid level height in the steel wire can be accurately adjusted through the scale 344.
In one embodiment, the first quenching apparatus 3 and the second quenching apparatus 6 each include an upper portion 345 and a lower portion 346, and the upper portion 345 is movably mounted in the lower portion 346 and forms a cavity for accommodating the AQ solution. Further, the upper portion 345 is controlled by an external control device to move up and down and change the lengths of the first and second quenching apparatuses 3 and 6. The upper part 345 is designed to be movable in the lower part 346, so that the lengths of the first quenching device 3 and the second quenching device 6 can be telescopically adjusted, the longest immersed length of the steel wire in the first quenching device and the second quenching device can be changed, and the scales 344 are marked from bottom to top, so that the upper part 345 and the lower part 346 are designed to be in a hierarchical adjustment structure, and each stage of state can be provided with a group of corresponding scales 344, so that the adjustment is convenient.
In an embodiment, a V-shaped groove 8,V is further provided in the groove body 1, and the V-shaped groove 8,V is located below the second guide wheel 4 and the third guide wheel 5. Preferably, the bottom of the tank body 1 is also provided with a lifting pump 9, a liquid inlet 91 of the lifting pump 9 is connected with the lower end of the V-shaped groove 8, and a liquid outlet 92 of the lifting pump 9 is connected with liquid inlets 341 of the first quenching device 3 and the second quenching device 6. The groove of V font makes cell body 1 bottom be the funnel form, and the bottom of funnel is the inlet 91 of elevator pump 9, and this kind of structure can assemble the AQ solution that the liquid outlet 342 of first guenching unit 3 and second guenching unit 6 flows out to cell body 1 bottom fast, flows into elevator pump 9 in, is in again by elevator pump 9 pump first guenching unit 3 and second guenching unit 6, realizes the circulation of AQ solution.
The invention also provides a method for adjusting a water quenching process by using the device of any one of the above steps, which comprises the following steps:
step 1, according to different diameters of steel wires, selecting a first quenching device 3 and a second quenching device 6 with specified diameters, and respectively installing the first quenching device and the second quenching device on a first side wall 11 and a second side wall 12 of a groove body 1;
step 2, calculating the maximum immersed length and the air section length of the steel wire in the first quenching device 3 and the second quenching device 6 according to different strength grades of the steel wire, and adjusting the positions of the upper parts 345 of the first quenching device 3 and the second quenching device 6 so that the lengths of the first quenching device 3 and the second quenching device 6 are larger than the calculated maximum immersed length; the specific calculation formula is as follows:
maximum immersion length of the steel wire in the first quenching apparatus 3= (0.9058 ×d+0.3909 ×d, i.e. x dv;
NT steel wire: air segment length = (15.994-8.3892 xd) x dv, where air segment length units are centimeters;
HT steel wire: air segment length = (22.578-12.919 xd) x dv, where air segment length units are centimeters;
wherein d is the diameter length value of the steel wire, and v is the running speed value of the steel wire;
the constant values in the above formula are all the best values obtained by fitting my department through a large number of tests.
Step 3, adjusting the liquid level rod 343 in the first quenching device 3 and the second quenching device 6 to a required scale 344;
step 4, inputting the AQ solution into the first quenching device 3 and the second quenching device 6 through the lift pump 9, and keeping the flow of the liquid inlet 341 and the flow of the liquid outlet 342 the same when the liquid level reaches the position of the liquid level rod 343, wherein the liquid level is kept unchanged;
step 5, each steel wire sequentially passes through a first guide wheel 2, a first quenching device 3WT1, a second wheel, a third guide wheel 5, a second quenching device 6 and a fourth guide wheel 7 which correspond to the steel wire from the wire dividing groove;
and 6, performing a water quenching process.
The length of the second quenching device 6 is larger than 40 cm, the immersed length of the steel wire in the second quenching device 6 is kept consistent with the conventional quenching process at the beginning, the error of the immersed length of the steel wire is not more than 10 cm, in the process of changing the crystal phase state of the steel wire, every 1 cm is added to the immersed length of the steel wire in the second quenching device 6, the strength of the steel wire is improved by 3N/mm, and the steel wire can be debugged according to the state of an actual steel wire in the production process.
By the water quenching tank and the method for adjusting the water quenching process by using the water quenching tank, the immersion depth of the steel wire in the AQ solution and the length of an air section between two quenching devices can be automatically and accurately adjusted when the water quenching process is carried out; the method for isolating and quenching each steel wire can effectively avoid the excessive temperature of the AQ solution; the vertical wire routing quenching mode ensures that the thickness of a vapor film around the wire is the same and the heat conduction rate is uniform; the improvement of the aspects can ensure that the steel wire structure is more stable in transformation, the strength of the steel wire is higher, and the quality of the steel wire is better.
The invention has been described with respect to the above-described embodiments, however, the above-described embodiments are merely examples of practicing the invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. On the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (10)
1. A water quenching tank, which is characterized in that: the device comprises a groove body, a first guide wheel, a first quenching device, a second guide wheel, a third guide wheel, a second quenching device and a fourth guide wheel; the groove body comprises a first side wall and a second side wall which are opposite, the first guide wheel is arranged at the top end of the first side wall, the first quenching device and the second guide wheel are both positioned in the groove body and arranged on the first side wall, the second guide wheel is positioned below the first quenching device, the third guide wheel and the second quenching device are both positioned in the groove body and arranged on the second side wall, the third guide wheel is positioned below the second quenching device, and the fourth guide wheel is arranged at the top end of the second side wall;
the first quenching device and the second quenching device are hollow structures, the first quenching device comprises a liquid inlet and a liquid outlet, a liquid level rod capable of moving up and down is arranged in the first quenching device, and liquid enters the first quenching device and is maintained at the height of the liquid level rod; the second quenching device and the first quenching device have the same structure; the steel wire enters from the top end of the first quenching device, passes out from the bottom end of the second quenching device, and passes out from the top end of the second quenching device;
the steel wire bypasses the first guide wheel, enters the groove body, passes through the first quenching device, bypasses the second guide wheel and the third guide wheel, passes through the second quenching device, and finally bypasses the fourth guide wheel and leaves the groove body; the first guide wheel, the first quenching device, the second guide wheel, the third guide wheel, the second quenching device and the fourth guide wheel are a group of water quenching devices, and each steel wire corresponds to a group of water quenching devices.
2. The water quench tank of claim 1, wherein: the number of groups of the water quenching devices is larger than or equal to the number of steel wires.
3. The water quench tank of claim 2, wherein: the first quenching device and the second quenching device are respectively provided with scales, the liquid level rod is controlled by an external control device to move up and down and stay at the designated scale position, when the position of the liquid level rod changes, the liquid level of the liquid in the first quenching device and the liquid level in the second quenching device change, and the immersion length of the steel wire in the first quenching device and the immersion length of the steel wire in the second quenching device change.
4. A water quench tank as claimed in claim 3, wherein: the first quenching device and the second quenching device comprise an upper part and a lower part, wherein the upper part is arranged in the lower part in a vertically movable way and forms a cavity for accommodating AQ solution.
5. The water quench tank of claim 4, wherein: the upper part is controlled by an external control device to move up and down and change the lengths of the first quenching device and the second quenching device.
6. The water quench tank of claim 2, wherein: the groove body is internally provided with a V-shaped groove, and the V-shaped groove is positioned below the second guide wheel and the third guide wheel.
7. The water quench tank of claim 6, wherein: the bottom of the tank body is also provided with a lifting pump, a liquid inlet of the lifting pump is connected with the lower end of the V-shaped groove, and a liquid outlet of the lifting pump is connected with liquid inlets of the first quenching device and the second quenching device.
8. A method of adjusting a water quenching process using the apparatus of any of claims 1-7, comprising the steps of:
step 1, selecting a first quenching device and a second quenching device with specified diameters according to different diameters of steel wires, and respectively installing the first quenching device and the second quenching device on a first side wall and a second side wall of the groove body;
step 2, calculating the maximum immersed length and the air section length of the steel wire in the first quenching device and the second quenching device according to different steel wire strength grades, and adjusting the upper positions of the first quenching device and the second quenching device so that the lengths of the first quenching device and the second quenching device are larger than the calculated maximum immersed length; the specific calculation formula is as follows:
maximum immersion length of the steel wire in the first quenching apparatus= (0.9058 ×d+0.3909 ×d) ×dv;
NT steel wire: air segment length = (15.994-8.3892 xd) x dv, where air segment length units are centimeters;
HT steel wire: air segment length = (22.578-12.919 xd) x dv, where air segment length units are centimeters;
wherein d is the diameter length value of the steel wire, and v is the running speed value of the steel wire;
step 3, adjusting a liquid level rod in the first quenching device and the second quenching device to a required scale;
step 4, inputting an AQ solution into the first quenching device and the second quenching device through a lifting pump, and keeping the flow of a liquid inlet and the flow of a liquid outlet the same when the liquid level reaches the position of a liquid level rod, wherein the liquid level is kept unchanged;
step 5, each steel wire sequentially passes through a first guide wheel, a first quenching device WT1, a second wheel, a third guide wheel, a second quenching device and a fourth guide wheel which correspond to the steel wire from the wire dividing groove;
and 6, performing a water quenching process.
9. The method of adjusting a water quench process of claim 8 wherein: the length of the second quenching device is more than 40 cm.
10. The method of adjusting a water quench process of claim 8 wherein: in the process of transforming the crystalline phase state of the steel wire, the strength of the steel wire is improved by 3N/mm every 1 cm of the immersed length of the steel wire in the second quenching device.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116855726A (en) * | 2023-08-22 | 2023-10-10 | 河南恒创能科金属制品有限公司 | Diamond wire bus quenching system and temperature control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116855726A (en) * | 2023-08-22 | 2023-10-10 | 河南恒创能科金属制品有限公司 | Diamond wire bus quenching system and temperature control method thereof |
| CN116855726B (en) * | 2023-08-22 | 2024-02-09 | 河南恒创能科金属制品有限公司 | Diamond wire bus quenching system and temperature control method thereof |
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