CN106755947A - Heat treatment method for metal material - Google Patents
Heat treatment method for metal material Download PDFInfo
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- CN106755947A CN106755947A CN201610235592.4A CN201610235592A CN106755947A CN 106755947 A CN106755947 A CN 106755947A CN 201610235592 A CN201610235592 A CN 201610235592A CN 106755947 A CN106755947 A CN 106755947A
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- Prior art keywords
- metal material
- heat treatment
- jet flow
- cooling
- slow speed
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- 239000007769 metal material Substances 0.000 title claims abstract description 148
- 238000010438 heat treatment Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000001816 cooling Methods 0.000 claims abstract description 60
- 230000007246 mechanism Effects 0.000 claims description 48
- 239000002826 coolant Substances 0.000 claims description 44
- 238000005507 spraying Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 description 33
- 239000010959 steel Substances 0.000 description 33
- 239000000463 material Substances 0.000 description 12
- 230000008859 change Effects 0.000 description 10
- 210000001161 mammalian embryo Anatomy 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000012809 cooling fluid Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 239000000110 cooling liquid Substances 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 238000005098 hot rolling Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- 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
-
- 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
-
- 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
- C21D1/60—Aqueous agents
-
- 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
- C21D1/667—Quenching devices for spray quenching
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0056—Furnaces through which the charge is moved in a horizontal straight path
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0075—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rods of limited length
Abstract
A method for heat-treating a metal material, comprising: heating a metal material to a first temperature by a heating jig; and executing a rapid cooling program on the metal material by using a cooling device to rapidly reduce the metal material from the first temperature to a second temperature, wherein the rapid cooling program has a rapid cooling rate for reducing the temperature of the metal material, and the rapid cooling rate ranges from 80 ℃ per second to 200 ℃ per second.
Description
Technical field
The present invention relates to a kind of metal material heat treatment method, especially one kind is by controlling cooling velocity
To change the heat treatment method of the mechanical property of metal material.
Background technology
In the procedure of metal material, it is special that heat treatment process can change metal material machinery in itself
Property, by taking the heat treatment process of steel as an example, when the steel are heated to a specified temp, can lead to
A cooling device is crossed to cool down the steel, and the cooling device can be by controlling the cold of the steel
But temperature is to change the structural state of the steel, and then the steel is met specific rigidity or is extended
The mechanical properties such as property.
Refer to shown in Fig. 1, a kind of its manufacture device 9 for disclosing hot rolled steel plate, the manufacture device
9 are sequentially provided with a hot rolling machine 91, rapidly cooler according to the conveying direction of a steel S
Group 92 and one thermal cycle cooling unit 93, when steel S by the hot rolling machine 91 with into
Type is for after a predetermined shape, steel S then rapidly can cool down unit 92 to carry out urgency by this
But, finally, steel S can enter the thermal cycle and cool down unit 93, the thermal cycle cooling quickly cooling
Unit 93 can whereby adjust steel S's by the temperature control of steel S in a predetermined temperature
Mechanical property.On the heat treatment method with above-mentioned manufacture device 9, reference can be made to TaiWan, China is public
The Patent Case of announcement number the I445581st.
But, in addition to the mechanical property of steel S change except meeting because of the difference of chilling temperature,
Can be more varied from because of the difference of cooling velocity, heat treatment process is only controlled in the prior art
In the case that chilling temperature but ignores cooling velocity, the heat treatment process of prior art cannot make steel
Meet specific mechanical property Deng metal material.
In view of this, the present invention provides a kind of metal material heat treatment method then, to solve prior art
Heat treatment process cannot make the problem of the metal material for meeting specific mechanical characteristic.
The content of the invention
It is an object of the invention to provide a kind of metal material heat treatment method, the metal material heat treatment side
Method can meet specific machine by the mechanical property that controls cooling velocity to change metal material with making
The effect of the metal material of tool characteristic.
To reach aforementioned invention purpose, the present invention with technical scheme include：
A kind of metal material heat treatment method, including：One metal material is heated to a heating tool
One first temperature；And a quick cooling program is performed to the metal material with a cooling device, make the gold
Category material drops quickly to a second temperature by first temperature, and the quick cooling program has makes the gold
One fast cooling speed of category material cooling, the scope of the fast cooling speed is between 80 DEG C
/ sec~200 DEG C/sec.By the above method to control the cooldown rate of metal material, making is reached
Meet the effect of the metal material of specific mechanical characteristic.
Wherein, the cooling device has a jet flow mechanism, and the jet flow mechanism is cooled down by injection one
Liquid to perform the quick cooling program, whereby with cooling metal material effect.
Wherein, in the quick cooling program, the jet flow mechanism has one when the coolant is sprayed
Quick jet flow, the quick jet flow between 60L/min~1000L/min, whereby with
Fast cooling makes the effect of the metal material for meeting specific mechanical characteristic.
Wherein, in the quick cooling program, the coolant contact that the jet flow mechanism is sprayed should
During metal material have a quick jet pressure, the quick jet pressure between 70bar~300bar,
There is the effect that the metal material for meeting specific mechanical characteristic is made with fast cooling whereby.
Wherein, a cooling program at a slow speed is performed to the metal material with the cooling device, makes the metal material
By the second temperature descending at slow speed to one the 3rd temperature, this at a slow speed cooling program have make the metal material
One rate of temperature fall at a slow speed of cooling, the scope of the rate of temperature fall at a slow speed is between 50 DEG C/sec~80 DEG C
/ sec, controls the cooldown rate of metal material whereby, reaches the gold for making and meeting specific mechanical characteristic
Belong to the effect of material.
Wherein, the cooling device has a jet flow mechanism, and the jet flow mechanism is by spraying a coolant
To perform the cooling program at a slow speed, whereby with the effect of cooling metal material.
Wherein, in this at a slow speed cooling program, the jet flow mechanism has one when the coolant is sprayed
Jet flow at a slow speed, this at a slow speed jet flow between 20L/min~60L/min, whereby with fast
Prompt drop temperature makes the effect of the metal material for meeting specific mechanical characteristic.
Wherein, in this at a slow speed cooling program, the coolant contact that the jet flow mechanism is sprayed should
There is a jet pressure at a slow speed during metal material, this at a slow speed jet pressure between 30bar~70bar, borrow
This has the effect that the metal material for meeting specific mechanical characteristic is made with fast cooling.
Wherein, the cooling device have a conveying mechanism, the conveying mechanism for the metal material carry out it is cold
When but, the metal material is driven to be moved towards a conveying direction, whereby with the effect of conveying metal material.
Wherein, the cooling device has a jet flow mechanism, and the jet flow mechanism is by spraying a coolant
To cool down the metal material, the coolant has a direct of travel, the direct of travel and the conveying direction
An angle of inclination is accompanied, the angle of inclination maintains appropriate heat exchange whereby between 15 °~90 °,
And when the quick cooling program is performed, lift the air film that the coolant washes away the metal material surface
Effect, and perform the cooling program at a slow speed when, lift the coolant and remove the metal material table
The effect of the scale in face.
Wherein, the angle of inclination is 45 °, appropriate heat exchange is maintained whereby, and performing
During the quick cooling program, the effect that the coolant washes away the air film on the metal material surface is lifted, with
And when the cooling program at a slow speed is performed, lift the scale that the coolant removes the metal material surface
Effect.
Wherein, the conveying mechanism is when the metal material is cooled down, in the metal material towards the conveying side
In the state of to movement, metal material rotation with the axis of the parallel conveying direction is ordered about, whereby
Appropriate heat exchange is maintained, and when the quick cooling program is performed, is lifted the coolant and is washed away
The effect of the air film on the metal material surface, and when the cooling program at a slow speed is performed, lift this cold
But liquid removes the effect of the scale on the metal material surface.
Brief description of the drawings
Fig. 1：The schematic diagram of existing manufacture device.
Fig. 2：The schematic diagram of the performs device of metal material heat treatment method of the invention.
Fig. 3：The schematic diagram of the performs device of metal material heat treatment method of the invention.
Fig. 4：The schematic diagram of the performs device of metal material heat treatment method of the invention.
Fig. 5：The schematic diagram of the performs device of metal material heat treatment method of the invention.
Description of reference numerals
(present invention)
The pedestal of 1 conveying mechanism 11
The discharge end of 111 feeding end 112
The delivery section of 12 disk roller 121
The drive motor of 122 rotating shaft 13
14 gear units
The jet head sets of 2 jet flow mechanism 21
The support frame of 211 nozzle 22
A1 angles of inclination
D1 conveying direction D2 axial directions
D3 direct of travels
S metal materials
(prior art)
The hot rolling machine of 9 manufacture device 91
92 cooling unit 93 thermal cycle cooling units
S steel.
Specific embodiment
It is that above and other objects, features and advantages of the invention can be become apparent, it is hereafter special
Presently preferred embodiments of the present invention is lifted, and coordinates accompanying drawing, be described in detail below：
It is of the invention in full described in metal material temperature, refer to the metal material in perform heating schedule or
Surface temperature after cooling program.
Refer to shown in Fig. 2 and Fig. 3, it is perform metal material heat treatment method of the invention one
The schematic diagram of cooling device, the cooling device is used to perform cooling operations to a metal material S, wherein,
The cooling device includes a conveying mechanism 1 and a jet flow mechanism 2, and the jet flow mechanism 2 is arranged at this
The side of conveying mechanism 1.
The conveying mechanism 1 has a pedestal 11 and multiple disk rollers 12, and the pedestal 11 has one to enter
Material end 111, a discharge end 112 and a conveying direction D1, conveying direction D1 is by the feeding end
111 extend to the discharge end 112, and the plurality of disk roller 12 is arranged on the pedestal 11, the plurality of
Disk roller 12 respectively has a delivery section 121, and the footpath of the delivery section 121 of the plurality of disk roller 12 is wide,
By the delivery section 121 opposite end towards center decrescence, the rotating shaft 122 of the plurality of disk roller 12
Axial direction D2 and conveying direction D1 be not parallel each other and out of plumb.Additionally, the conveying
Mechanism 1 has a drive motor 13 in addition, and two adjacent rotating shafts of disk roller 12 122 are passed with one
Moving cell 14 is connected, and be transferred to for power by multiple gear units 14 by the drive motor 13
The rotating shaft 122 of the plurality of disk roller 12.
Refer to shown in Fig. 4, in the present embodiment, the delivery section 121 of the plurality of disk roller 12 has
The outer surface for having footpath change wide, the delivery section 121 preferably forms continuous song according to linear projection mode
Face, such as the outer surface of the delivery section 121 of the plurality of disk roller 12 is a concave curved surface.By upper
Setting is stated, when metal material S is the delivery section 121 that is bar-shaped and being placed in the plurality of disk roller 12
When, in the case where the plurality of disk roller 12 is rotated according to the rotating shaft 122, the plurality of disk roller 12
The delivery section 121 can to metal material S simultaneously bestow a migration power and a rotary action
Power, can not only drive metal material S to be moved along conveying direction D1, can more order about the metal material
S is simultaneously mobile with metal material S is ordered about in rotation is carried out on the concave curved surface of the delivery section 121
And the effect for rotating.Wherein, the footpath rate of change wide of the delivery section 121 of the plurality of disk roller 12 is herein
Do not limit, preferably, according to metal material S shape and appropriateness adjust.
Referring again to shown in Fig. 2 and Fig. 3, the jet flow mechanism 2 has multiple jet head sets 21, should
Multiple jet head sets 21 are arranged between the feeding end 111 of the pedestal 11 and the discharge end 112.
The plurality of jet head sets 21 respectively have multiple nozzles 211, and the plurality of nozzle 211 is towards the plurality of roller
The metal material S that the delivery section 121 of wheel 12 is conveyed.Wherein, multiple nozzles 211 can spray
A coolant is penetrated, the coolant can be any working fluid that can make heat exchange, not limit herein,
In the present embodiment, the coolant is an aqueous water.The jet flow mechanism 2 has a support frame in addition
22, the plurality of jet head sets 21 are arranged at the support frame 22, and the support frame 22 combines the conveying
The pedestal 11 of mechanism 1, the support frame 22 also can convey pipe fitting with defeated as a coolant simultaneously
Giving the coolant, and the plurality of jet head sets 21 can connect with coolant conveying pipe fitting, make this cold
But the cooling liquid energy in liquid conveying pipe fitting is exported by the plurality of jet head sets 21.
Refer to shown in Fig. 5, the set-up mode of the plurality of nozzle 211 is not limited herein, and this is more
Individual nozzle 211 can vertically conveying direction D1 and set, make the coolant of the plurality of nozzle 211
The vertical conveying direction D1 of direct of travel D3, or as in the present embodiment, the plurality of nozzle
211 are obliquely installed by the discharge end 112 towards the direction of the feeding end 111, and the plurality of spray is made whereby
The direct of travel D3 of the coolant of mouth 211 includes a horizontal component and a vertical component (according to figure
For face), and the direct of travel D3 of the coolant horizontal component and conveying direction D1 conversely,
Make the cooling liquid energy that the plurality of nozzle 211 is sprayed to moved along conveying direction D1 this is bar-shaped
Metal material S provides bigger impulsive force, being cooled down to metal material S by the coolant or
The air film or scale on metal material S surfaces are removed, with the effect for smoothly performing heat treatment processing procedure.
Metal material heat treatment method of the invention includes a heating stepses and a quick cooling step.
The heating stepses, are to be heated to one first temperature to metal material S with a heating tool.Its
In, the species of metal material S is not limited in this, and first temperature can be according to metal material S
Species and characteristic it is different and be adjusted flexibly, in the present embodiment, metal material S is a steel,
First temperature is between 800 DEG C~1200 DEG C；When metal material S is intended to be heated to first temperature
When, first temperature refers to the surface temperature of metal material S.
The quick cooling step, is that a quick cooling journey is performed to metal material S with the cooling device
Sequence, makes metal material S drop quickly to a second temperature by first temperature.Wherein, this is quick
Cooling program has the fast cooling speed for making the metal material lower the temperature, the model of the fast cooling speed
Enclose between 80 DEG C/sec~200 DEG C/sec.
In more detail, the jet flow mechanism 2 of the cooling device is by spraying the coolant to perform this
Quick cooling program, in the quick cooling program, each nozzle of the jet flow mechanism 2
211 in spray the coolant when have a quick jet flow, the quick jet flow between
60L/min~1000L/min, coolant that the jet flow mechanism 2 is sprayed contacts metal material S
When have a quick jet pressure, the quick jet pressure is between 70bar~300bar.By upper
Implementation method is stated, by substantial amounts of cooling fluid to lift heat exchange effect, and then can not only be adjusted
The mechanical property of metal material S, can more impact the surface of metal material S by high pressure cooling fluid,
The air film produced in the heating stepses to wash away metal material S, and then with fast cooling
Making meets the effect of the metal material S of specific mechanical characteristic, and with maintenance metal material S
The effect of surface integrity.
The second temperature can be adjusted flexibly according to the species of metal material S and characteristic difference, in this
Do not limit, in the present embodiment, when metal material S is the steel, the second temperature is should
One phase change critical-temperature of steel.Make the steel specifically to cool down by the quick cooling step
Speed is cooled to the phase change critical-temperature, can adjust the mechanical property of the steel, and then with system
Work meets the effect of the steel of specific mechanical characteristic.
Metal material heat treatment method of the invention can be performed in addition after the quick cooling step is performed
One cooling step at a slow speed.The cooling step at a slow speed, is that metal material S is performed with the cooling device
One cooling program at a slow speed, makes metal material S by the second temperature descending at slow speed to one the 3rd temperature.
Wherein, this at a slow speed cooling program there is the rate of temperature fall at a slow speed for making metal material S lower the temperature, this is slow
The scope of fast rate of temperature fall is between 50 DEG C/sec~80 DEG C/sec.
In more detail, the jet flow mechanism 2 of the cooling device is by spraying the coolant to perform this
Cooling program at a slow speed, in this at a slow speed cooling program, each nozzle of the jet flow mechanism 2
211 have a jet flow at a slow speed when the coolant is sprayed, this at a slow speed jet flow between
20L/min~60L/min, when the coolant that the jet flow mechanism 2 is sprayed contacts metal material S
With a jet pressure at a slow speed, this at a slow speed jet pressure between 30bar~70bar, and the 3rd temperature
Degree can be adjusted flexibly according to the species of metal material S and characteristic difference, not limited in this.It is logical
Above-mentioned setting is crossed, by less amount of cooling fluid to slow down heat exchange effect, and then can not only be adjusted
The mechanical property of whole metal material S, more can impact the metal material by the cooling fluid of appropriate pressure
The surface of S, to remove the scale on metal material S surfaces, and then accords with being made with lowering the temperature at a slow speed
Close the effect of the metal material S of specific mechanical characteristic, and the scale with removal metal material S surfaces
Effect.
Metal material heat treatment method of the invention can in addition perform a temperature after the heating stepses are performed
Degree maintains step, then performs the quick cooling step.The temperature-maintaining step, is in the metal material
After S is heated to first temperature, make metal material S in maintaining first temperature in a scheduled time,
In the present embodiment, when metal material S is steel and when being heated to 800 DEG C~1200 DEG C, dimension
The scheduled time for holding first temperature is 10min~60min.By above-mentioned steps, can adjust should
The mechanical property of steel, and then meet the effect of the steel of specific mechanical characteristic with making.
Referring again to shown in Fig. 2, Fig. 3, in addition, in the cooling device of the present invention, the jet flow
The plurality of jet head sets 21 of mechanism 2 can be right according to the quick cooling program and at a slow speed cooling program
The coolant should be sprayed, and preferably as shown in Fig. 2 near the jet flow machine of the feeding end 111
The plurality of jet head sets 21 of structure 2 are used to perform the quick cooling program, near the discharge end 112
The plurality of jet head sets 21 of the jet flow mechanism 2 be used to perform the cooling program at a slow speed, make to pass through
The metal material S of the conveying mechanism 1 conveying can sequentially perform the quick cooling program and this is cold at a slow speed
But program, and then in the case where continuously performing fast cooling and lowering the temperature at a slow speed, reach making and meet
The effect of the metal material S of specific mechanical characteristic.
Referring again to shown in Fig. 5, also, performing the quick cooling program and this cools down at a slow speed journey
During sequence, the conveying mechanism 1 drives metal material S to be moved towards conveying direction D1, the jet flow machine
Structure 2 sprays the coolant, and direct of travel D3 and the conveying direction with direct of travel D3
D1 accompanies an angle of inclination A1, angle of inclination A1 between 15 °~90 °, in the present embodiment
In, preferably 45 °.By above-mentioned setting, the coolant can not only be made to be tieed up with metal material S
Appropriate heat exchange effect is held, more coolant punching can be lifted when the quick cooling program is performed
The effect of the air film on metal material S surfaces is brushed, and when the cooling program at a slow speed is performed, lifting
The coolant removes the effect of the scale on metal material S surfaces.
Furthermore, under the structure of cooling device of the invention, the quick cooling journey is being performed
Sequence and this at a slow speed cooling program when, if metal material S's is shaped as bar-shaped, the conveying mechanism 1
Disk roller 12 can not only drive bar-shaped metal material S along conveying direction D1 move, can more lead to
The concave curved surface of the delivery section 121 is crossed, bar-shaped metal material S is ordered about with the parallel conveying direction
The axis of D1 and rotation, make the cooling liquid energy metal material S of contact evenly, not only whereby
The coolant and metal material S can be made to maintain appropriate heat exchange effect, more can be to perform this quick
During cooling program, the effect that the coolant washes away the air film on metal material S surfaces, Yi Ji are lifted
Perform this at a slow speed cooling program when, lift the effect that the coolant removes the scale on metal material S surfaces
Really.
Meet specific mechanical characteristic to prove that metal material heat treatment method of the invention has to make
The effect of metal material, is below in bar-shaped steel (SCM440) execution with a width of 60mm in footpath
Step is stated, and associated mechanical characteristic is arranged as follows
Table one
Table two
The table of the above two is that four groups of bar-shaped steel embryo materials of SCM440 are heated into 1100 DEG C of (first temperature
Degree), after then holding warm a period of time, above-mentioned four groups of SCM440 are conveyed with an embryo material transporting velocity
Bar-shaped steel embryo material, then with jet flow as 1000L/min, jet pressure as 120bar, control
Make the above-mentioned bar-shaped steel embryo materials of four groups of SCM440 and be cooled to marquensite and generate temperature (Ms) (the
Two temperature) obtained by engineering properties, wherein, numbering is that the embryo material of S1-1 holds warm 30min,
S1-2 holds warm 35min, and S1-3 holds warm 15min, and S1-4 holds warm 20min；The embryo material speed of S1-1
It is 5M/min, the embryo material speed of S1-2, S1-3 and S1-4 is all 7M/min；A and B distinguishes
Two different sample points on same embryo material are represented, the depth refers to by the surface court of the bar-shaped steel
The distance that axle center extends.From the table one and table two, performed when with the bar-shaped steel of SCM440
During heat treatment method of the invention, the mechanical strength of the bar-shaped steel (effectively can be drawn into anti-intensity
And yield strength) lifting more than 40%, and the hardness of the bar-shaped steel is lifted more than 20%,
The above-mentioned provable metal material heat treatment method of the invention of experimental data can reach making and meet specific
The effect of the metal material S of mechanical property.
In sum, metal material heat treatment method of the invention, makes metal material S with specific cold
But speed is cooled down, and then controls the tissue change of metal material S, is reached making and is met specific
The effect of the metal material S of mechanical property.
Claims (12)
1. a kind of metal material heat treatment method, it is characterised in that：Including：
One the first temperature is heated to a metal material with a heating tool；And
One quick cooling program is performed to the metal material with a cooling device, the metal material is set to drop quickly to a second temperature by first temperature, the quick cooling program has a fast cooling speed for making the metal material lower the temperature, and the scope of the fast cooling speed is between 80°C/sec~200°C/sec。
2. metal material heat treatment method as claimed in claim 1, it is characterised in that：The cooling device has a jet flow mechanism, and the jet flow mechanism is by spraying a coolant to perform the quick cooling program.
3. metal material heat treatment method as claimed in claim 2, it is characterised in that：In the quick cooling program, the jet flow mechanism has a quick jet flow when coolant is sprayed, and the quick jet flow is between 60L/min ~ 1000L/min.
4. metal material heat treatment method as claimed in claim 2, it is characterised in that：In the quick cooling program, the coolant that the jet flow mechanism is sprayed has a quick jet pressure when contacting the metal material, and the quick jet pressure is between 70bar ~ 300bar.
5. metal material heat treatment method as claimed in claim 1, it is characterised in that：One cooling program at a slow speed is performed to the metal material with the cooling device, make the metal material by the second temperature descending at slow speed to the 3rd temperature, this at a slow speed cooling program there is a rate of temperature fall at a slow speed for making the metal material lower the temperature, the scope of the rate of temperature fall at a slow speed is between 50°C/sec~80°C/sec。
6. metal material heat treatment method as claimed in claim 5, it is characterised in that：The cooling device has a jet flow mechanism, and the jet flow mechanism is by spraying a coolant to perform the cooling program at a slow speed.
7. metal material heat treatment method as claimed in claim 6, it is characterised in that：In this at a slow speed cooling program, the jet flow mechanism has a jet flow at a slow speed when the coolant is sprayed, this at a slow speed jet flow between 20L/min ~ 60L/min.
8. metal material heat treatment method as claimed in claim 6, it is characterised in that：There is a jet pressure at a slow speed in this at a slow speed cooling program, when the coolant that the jet flow mechanism is sprayed contacts the metal material, this at a slow speed jet pressure between 30bar ~ 70bar.
9. metal material heat treatment method as claimed in claim 1, it is characterised in that：The cooling device have a conveying mechanism, the conveying mechanism for the metal material cooled down when, drive the metal material to be moved towards a conveying direction.
10. metal material heat treatment method as claimed in claim 9, it is characterised in that：The cooling device has a jet flow mechanism, and by spraying a coolant to cool down the metal material, the coolant has a direct of travel for the jet flow mechanism, and the direct of travel accompanies an angle of inclination with the conveying direction, and the angle of inclination is between 15 ° ~ 90 °.
11. metal material heat treatment methods as claimed in claim 10, it is characterised in that：The angle of inclination is 45 °.
12. metal material heat treatment methods as claimed in claim 9, it is characterised in that：The conveying mechanism in the state of the metal material is moved towards the conveying direction, orders about metal material rotation with the axis of the parallel conveying direction when metal material is cooled down.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW104138249 | 2015-11-19 | ||
| TW104138249A TWI616537B (en) | 2015-11-19 | 2015-11-19 | Method of heat treatment for metal |
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| Publication Number | Publication Date |
|---|---|
| CN106755947A true CN106755947A (en) | 2017-05-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610235592.4A Pending CN106755947A (en) | 2015-11-19 | 2016-04-15 | Heat treatment method for metal material |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20170145539A1 (en) |
| CN (1) | CN106755947A (en) |
| DE (1) | DE102016113325B4 (en) |
| TW (1) | TWI616537B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108099253A (en) * | 2017-12-18 | 2018-06-01 | 中国平煤神马集团开封炭素有限公司 | A kind of graphite electrode continuous uniform cooling device |
| CN108115968A (en) * | 2017-12-18 | 2018-06-05 | 中国平煤神马集团开封炭素有限公司 | A kind of graphite electrode continuous uniform cooling means |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201900011559A1 (en) * | 2019-07-12 | 2021-01-12 | Danieli Off Mecc | HIGH PRODUCTIVITY STEEL BAR HARDENING PLANT, HARDENING MACHINE AND RELATIVE METHOD FOR HARDENING STEEL BARS |
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Also Published As
| Publication number | Publication date |
|---|---|
| TWI616537B (en) | 2018-03-01 |
| TW201718879A (en) | 2017-06-01 |
| DE102016113325A1 (en) | 2017-05-24 |
| DE102016113325B4 (en) | 2018-08-16 |
| US20170145539A1 (en) | 2017-05-25 |
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