CN111334657B - Continuous steel heat treatment equipment - Google Patents
Continuous steel heat treatment equipment Download PDFInfo
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- CN111334657B CN111334657B CN202010266395.5A CN202010266395A CN111334657B CN 111334657 B CN111334657 B CN 111334657B CN 202010266395 A CN202010266395 A CN 202010266395A CN 111334657 B CN111334657 B CN 111334657B
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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
- C21D9/32—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for gear wheels, worm wheels, or the like
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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
- C21D1/25—Hardening, combined with annealing between 300 degrees Celsius and 600 degrees Celsius, i.e. heat refining ("Vergüten")
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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
- C21D1/34—Methods of heating
- C21D1/42—Induction heating
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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
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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
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
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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
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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
- Y02P10/25—Process efficiency
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Abstract
The invention relates to the technical field of steel heat treatment, in particular to continuous steel heat treatment equipment, which comprises a preheating mechanism, a preheating process before quenching continuous steel, a heating mechanism before quenching, a quenching mechanism and a quenching mechanism, wherein the preheating mechanism is arranged on the side part of the preheating mechanism, receives the continuous steel from the preheating mechanism, is used for performing a thermal tempering process before quenching the continuous steel, heats the continuous steel to 800-, further, most of the austenite in the continuous steel material can be transformed into martensite.
Description
Technical Field
The invention relates to the technical field of steel heat treatment, in particular to continuous steel heat treatment equipment.
Background
Chinese patent CN201720580909.8 relates to a quenching processing device, in particular to a metal workpiece carburizing and quenching device, wherein a heating workpiece of the quenching processing device slowly enters a quenching oil pool after being buffered by a falling belt of a discharge port, falls on a cooling section of a workpiece conveyor belt, is gradually cooled along with the slow running of the cooling section, and is then transported out of the quenching oil pool through a transport section to finish quenching processing; in the case where austenite is transformed into martensite in the carburizing and quenching process of the steel material, the area fraction of the martensite structure in the surface layer of the steel member cannot be significantly increased, so that the effect of actually increasing the hardness of the surface layer of the steel member is limited, and the above-mentioned problems cannot be solved by this apparatus.
Disclosure of Invention
The technical problem to be solved by the invention is to provide continuous steel heat treatment equipment, the technical scheme solves the problems of low safety and low efficiency of manual picking and placing in the gear quenching process, the continuous steel can be heated to 800 plus 1000 ℃ through the arrangement of the preheating mechanism and the heating mechanism before quenching, and the quenching treatment can be carried out on the quenched and tempered continuous steel by utilizing the quenching mechanism, so that most of austenite in the continuous steel can be converted into martensite.
In order to solve the technical problems, the invention provides the following technical scheme:
provided is a continuous steel heat treatment apparatus including:
a preheating mechanism for preheating the continuous steel before quenching;
the heating mechanism before quenching is arranged at the side part of the preheating mechanism, receives the continuous steel from the preheating mechanism, is used for performing a thermal tempering process before quenching on the continuous steel, and heats the continuous steel to 800-;
and the quenching mechanism is arranged at the side part of the heating mechanism before quenching, receives the continuous steel from the heating mechanism before quenching, is used for carrying out a quenching process on the continuous steel and carrying out quenching treatment on the continuous steel after quality control.
As a preferred scheme of the continuous steel heat treatment equipment, the preheating mechanism comprises a preheating furnace, a first suspension rod, a preheating induction coil, a preheating controller and a preheating end infrared temperature measurement sensor, wherein a preheating cavity is arranged in the preheating furnace, a preheating heat-insulating layer arranged in the preheating furnace before quenching is coated outside the preheating cavity, a plurality of first suspension rods are arranged in the preheating furnace, the first suspension rods are arranged in the preheating cavity in an array manner, the preheating induction coil is arranged at the bottom end of each first suspension rod and is used for allowing continuous steel to pass through, a certain gap is formed between each preheating induction coil and the inner bottom surface of the preheating cavity, the top end of each first suspension rod penetrates through the preheating furnace, the preheating controller electrically connected with the preheating induction coil is arranged at one end extending out of the preheating furnace, and the plurality of preheating end infrared temperature measurement sensors are arranged in an array manner at the top end of the preheating furnace, and a preheating furnace temperature measuring probe of the preheating end infrared temperature measuring sensor extends into the preheating cavity.
As a preferred scheme of continuity steel heat treatment facility, heating mechanism includes heating furnace, heating channel, heating rod, heating end infrared temperature sensor, protective gas lets in pipeline, protective gas exhaust pipeline and power transformer before quenching, the heating furnace inside has the heating cavity, and the outside cladding of heating cavity has the heating heat preservation that sets up inside the heating furnace, is equipped with a plurality ofly in the heating furnace heating channel, heating channel supply continuity steel to pass, and heating channel sets up on the backing plate, the bottom of backing plate is equipped with the partition panel, the partition panel sets up on heating cavity's interior bottom surface, heating cavity is internal to be equipped with a plurality of heating rod, heating rod present array setting in heating cavity, and each heating channel lateral part all is equipped with the heating rod, and the bottom of heating furnace is equipped with and heating rod electric connection power transformer, the heating furnace comprises a heating cavity, a heating end and a heating end infrared temperature measurement sensor, wherein the heating end infrared temperature measurement sensor is arranged at the top end of the heating furnace, a heating furnace temperature measurement probe of the heating end infrared temperature measurement sensor extends into the heating cavity, the side part of the heating furnace is provided with a protective gas inlet pipeline and a protective gas exhaust pipeline, the protective gas inlet pipeline and the protective gas exhaust pipeline extend into the heating cavity, and a ventilation control valve and a pumping control valve are respectively arranged on the protective gas inlet pipeline and the protective gas exhaust pipeline.
As a preferred scheme of continuous steel heat treatment equipment, a plurality of second suspension rods are further arranged in the preheating furnace, the second suspension rods are arranged in an array mode in the preheating cavity, the bottom end of each first suspension rod is rotatably connected with a preheating guide roller, the preheating guide rollers are located at the bottom of the preheating induction coil and have a certain gap with the inner bottom surface of the preheating cavity, the top ends of the second suspension rods penetrate through the preheating furnace and are fixedly connected with the outer portion of the preheating furnace, and a plurality of heating guide rollers are rotatably connected in each heating channel.
As an optimal scheme of continuous steel heat treatment equipment, the first suspension rod, the second suspension rod and the preheating furnace temperature probe are all sleeved with a preheating furnace heat insulation sleeve, the preheating furnace is positioned in a preheating heat insulation layer before quenching, the heating rod and the heating furnace temperature probe are all sleeved with a heating furnace heat insulation sleeve, and the heating furnace heat insulation sleeve is positioned in a heating heat insulation layer.
As a preferred scheme of continuity steel heat treatment facility, quenching mechanism includes quenching furnace, input channel, cooling fan, cooler bin, portal frame, degree of depth adjusting part, clamp subassembly, cooling channel and cleans the subassembly, be equipped with the quenching groove on the quenching furnace, be equipped with in the quenching groove the cooler bin, the wherein one end in quenching groove is equipped with input channel is equipped with on the input channel cooling fan is equipped with on the quenching groove the portal frame is equipped with on the portal frame degree of depth adjusting part with clamp subassembly, the one end that input channel was kept away from to the quenching groove is equipped with cooling channel is equipped with in the cooling channel clean the subassembly.
As a preferred scheme of continuity steel heat treatment facility, be equipped with the input thermovent on the input channel, input thermovent intercommunication has the input cooling tube, the input cooling tube is connected with radiator fan, is equipped with the cooling tube in the cooling channel, be equipped with a plurality of cooling shower nozzles on the cooling tube, be equipped with total heat dissipation pipeline on the cooling channel, be equipped with the air exhauster on the total heat dissipation pipeline, total heat dissipation pipeline keeps away from the input channel setting, cleans the subassembly and drives actuating cylinder and wipe cloth including cleaning, is equipped with a plurality ofly on the cooling channel clean and drive actuating cylinder, clean and drive actuating cylinder and be close to the input channel setting, clean the output shaft that drives actuating cylinder and run through cooling channel to be equipped with in the inside one end tip of extending into cooling channel clean cloth.
As an optimal scheme of continuity steel heat treatment facility, degree of depth adjusting part includes degree of depth accommodate the lead screw slip table, lead screw slip table seat, support arm and hanger plate, and the both sides of portal frame all are equipped with one degree of depth accommodate the lead screw slip table all sliding connection has one on the degree of depth accommodate the lead screw slip table seat is equipped with on the lead screw slip table seat the support arm, the bottom of two support arms is equipped with a plurality of through-holes are equipped with on the hanger plate, the hanger plate.
As a preferred scheme of continuity steel equipment for heat treatment, the clamp subassembly includes highly drive actuating cylinder, horizontal drive lead screw slip table, two-way lead screw slip table and steel clamp, is equipped with a plurality ofly on the portal frame highly drive actuating cylinder, the equal transmission of the output of highly driving actuating cylinder is connected with one horizontal drive lead screw slip table, the equal transmission of output of horizontal drive lead screw slip table is connected with one two-way lead screw slip table, two-way lead screw slip table revolve on the opposite both sides screw thread all the transmission be connected with one the steel clamp.
As a preferable proposal of the continuous steel heat treatment equipment, the input end of the preheating mechanism is provided with a first conveying belt, the output end of the first conveying belt is connected with the input end of the preheating mechanism, a second conveying belt is arranged between the preheating mechanism and the heating mechanism before quenching, the input end of the second conveying belt is connected with the output end of the preheating mechanism, the output end of the second conveying belt is connected with the input end of the heating mechanism before quenching, the second conveying belt has a certain gradient, a third conveying belt is arranged between the heating mechanism before quenching and the quenching mechanism, the input end of the third conveying belt is connected with the output end of the heating mechanism before quenching, the output end of the third conveying belt is connected with the input end of the quenching mechanism, a fourth conveying belt is arranged at the input end of the quenching mechanism, and the input end of the fourth conveying belt is connected with the output end of the quenching mechanism.
Compared with the prior art, the invention has the beneficial effects that:
the preheating mechanism carries out preheating treatment on continuous steel in an induction heating mode, the preheating end infrared temperature measurement sensor is used for measuring the temperature in the preheating cavity, the preheating end infrared temperature measurement sensor detects the temperature and changes the working power of the preheating controller through a corresponding temperature control system, the temperature emitted when the preheating induction coil works is changed, and automatic control of the temperature in the preheating cavity is achieved. Heating mechanism quenches the heating to continuity steel before quenching, the protective gas lets in the pipe connection and has the device that lets in the protective gas, the protective gas can be nitrogen gas, the protective gas lets in the pipeline through the protective gas and inwards lets in heating the cavity, the infrared temperature sensor of heating end is used for measuring the temperature in the heating cavity, detect the temperature and remove the operating power who changes power transformer by corresponding temperature control system through the infrared temperature sensor of heating end, change the temperature that the heating rod during operation gived off, realize heating cavity temperature automatic control. The cooling box is arranged in the quenching tank and contains cooling substances, and because the continuous steel subjected to the heating hardening treatment has a temperature of about DEG C, in order to ensure that each part of the continuous steel can be rapidly cooled from a high-temperature austenite region to achieve a quenching effect, the austenite structure in the continuous steel is changed into a martensite structure and a structure.
The preheating mechanism and the heating mechanism before quenching are arranged in the heat treatment equipment, so that the continuous steel can be heated to 800-.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a preheating mechanism according to the present invention;
FIG. 3 is a schematic cross-sectional view of a preheating mechanism of the present invention;
FIG. 4 is an enlarged schematic view at A in FIG. 3;
FIG. 5 is a schematic view of the structure of the heating mechanism of the present invention before quenching;
FIG. 6 is a schematic sectional view of the heating means of the present invention before quenching;
FIG. 7 is an enlarged schematic view at B of FIG. 6;
FIG. 8 is a first schematic structural view of a quenching mechanism according to the present invention;
FIG. 9 is a second schematic structural view of a quenching mechanism according to the present invention;
FIG. 10 is a third schematic structural view of a quenching mechanism according to the present invention;
FIG. 11 is a fourth schematic structural view of a quenching mechanism according to the present invention;
FIG. 12 is an enlarged schematic view at C of FIG. 11;
FIG. 13 is an elevation view at the quench mechanism of the present invention;
fig. 14 is a schematic cross-sectional view taken along line a-a in fig. 13.
The reference numbers in the figures are:
1-a preheating mechanism; 1 a-a preheating furnace; 1a 1-preheat chamber; 1 b-preheating a heat-insulating layer before quenching; 1 c-a first suspension bar; 1 d-preheating the induction coil; 1 e-a preheat controller; 1 f-a second hanger bar; 1 g-preheating guide roller;
1 h-preheating end infrared temperature measurement sensor; 1h 1-preheating furnace temperature probe; 1 i-a heat insulation sleeve of a preheating furnace;
2-heating mechanism before quenching; 2 a-a heating furnace; 2a 1-heating chamber; 2 b-heating the heat-insulating layer; 2 c-a heating channel; 2c 1-partition panel; 2c 2-backing plate; 2c 3-heated guide rolls; 2 d-heating a heating rod; 2 e-heating end infrared temperature measurement sensor; 2e 1-furnace temperature probe; 2 f-a heat insulation sleeve of the heating furnace; 2 g-protective gas is introduced into a pipeline;
2g 1-ventilation control valve; 2 h-a protective gas pumping pipeline; 2h 1-air exhaust control valve; 2 i-power transformer;
3-a quenching mechanism; 3 a-a quenching furnace; 3a 1-quenching tank; 3 b-input channel; 3b1 — input side heat sink; 3b 2-input end radiating pipe; 3 c-a heat dissipation fan; 3 d-a cooling tank; 3 e-a portal frame; 3 f-a depth adjustment assembly; 3f 1-depth adjusting screw rod sliding table; 3f 2-screw slide bench seat; 3f 3-support arm; 3f 4-hanger plate; 3f 5-vias; 3 g-a clamp assembly; 3g 1-height drive cylinder; 3g 2-horizontally driving a screw rod sliding table; 3g 3-bidirectional screw rod sliding table; 3g 4-Steel Clamp; 3 h-cooling channel; 3h 1-cooling tube; 3h 2-cooling spray head; 3h3 — total heat dissipation pipe; 3h 4-exhaust fan; 3 i-a wiping component; 3i1 — wiping drive cylinder; 3i 2-wiping cloth;
4-a first conveyor belt;
5-a second conveyor belt;
6-a third conveyor belt;
7-a fourth conveyor belt.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, the heat treatment apparatus includes:
a preheating mechanism 1 for preheating a continuous steel material before quenching;
the pre-quenching heating mechanism 2 is arranged at the side part of the preheating mechanism 1, receives the continuous steel from the preheating mechanism 1, is used for performing a thermal tempering process before quenching on the continuous steel, and heats the continuous steel to 800-;
and a quenching mechanism 3 which is provided on a side portion of the pre-quenching heating mechanism 2, receives the continuous steel from the pre-quenching heating mechanism 2, and quenches the continuous steel after the quality control in the quenching process.
Referring to fig. 2, 3 and 4, the preheating mechanism 1 includes a preheating furnace 1a, a first suspension rod 1c, a preheating induction coil 1d, a preheating controller 1e and a preheating end infrared temperature measurement sensor 1h, the preheating furnace 1a has a preheating cavity 1a1 therein, the preheating cavity 1a1 is externally covered by a preheating insulating layer 1b before quenching disposed inside the preheating furnace 1a, a plurality of first suspension rods 1c are disposed in the preheating furnace 1a, the first suspension rods 1c are arranged in an array manner in the preheating cavity 1a1, the bottom end of the first suspension rod 1c is provided with a preheating induction coil 1d, the preheating induction coil 1d is penetrated by continuous steel, a gap is formed between the preheating induction coil 1d and the inner bottom surface of the preheating cavity 1a1, the top end of the first suspension rod 1c penetrates through the preheating furnace 1a, and a preheating controller 1e electrically connected to the preheating induction coil 1d is disposed at one end extending out of the preheating furnace 1a, the top end array of the preheating furnace 1a is provided with a plurality of preheating end infrared temperature measuring sensors 1h, and a preheating furnace temperature measuring probe 1h1 of the preheating end infrared temperature measuring sensors 1h extends into the preheating cavity 1a 1.
Preheating controller 1e is used for controlling preheating induction coil 1d during operation, mode through induction heating, carry out preheating treatment to continuity steel, preheat end infrared temperature sensor 1h and be used for measuring the temperature in preheating cavity 1a1, detect the temperature and go to change the operating power who preheats controller 1e by corresponding temperature control system through preheating end infrared temperature sensor 1h, change the temperature that preheats induction coil 1d during operation and give off, realize preheating the interior temperature automatic control of cavity 1a 1.
Referring to fig. 5, 6 and 7, the heating mechanism 2 before quenching includes a heating furnace 2a, a heating channel 2c, a heating rod 2d, a heating end infrared temperature measuring sensor 2e, a shielding gas inlet pipe 2g, a shielding gas exhaust pipe 2h and a power transformer 2i, the heating furnace 2a has a heating cavity 2a1 therein, a heating insulating layer 2b is coated outside the heating cavity 2a1 and disposed inside the heating furnace 2a, the heating furnace 2a has a plurality of heating channels 2c, the heating channel 2c is for continuous steel to pass through, the heating channel 2c is disposed on a backing plate 2c2, the bottom end of the backing plate 2c2 has a partition plate 2c1, the partition plate 2c1 is disposed on the inner bottom surface of the heating cavity 2a1, the heating cavity 2a1 has a plurality of heating rods 2d, the heating rods 2d are disposed in an array in the heating cavity 2a1, each heating channel 2c has a heating rod 2d at the side, the bottom of heating furnace 2a is equipped with power transformer 2i with heating rod 2d electric connection, the top array of heating furnace 2a is equipped with a plurality of heating end infrared temperature sensor 2e, heating furnace temperature probe 2e1 of heating end infrared temperature sensor 2e extends inside entering heating cavity 2a1, the lateral part of heating furnace 2a is equipped with protective gas and lets in pipeline 2g and protective gas air exhaust pipeline 2h, protective gas lets in inside pipeline 2g and protective gas air exhaust pipeline 2h extend and enter into heating cavity 2a1, protective gas lets in and is equipped with logical air control valve 2g1 and takes out air control valve 2h1 on pipeline 2g and protective gas air exhaust pipeline 2h respectively.
That is, the pre-quenching heating mechanism 2 is used for performing a Thermal refining process on the continuous steel, and the heating cavity 2a1 is filled with a protective gas for protecting the continuous steel during the Thermal refining process. In the process of executing the thermal hardening and tempering process, the heating rod 2d is used for heating the heating cavity 2a1, and then the continuous steel in the heating channel 2c is heated to 800-980 ℃, so that the temperature of the continuous steel exceeds the critical temperature.
A plurality of second suspension rods 1f are further arranged in the preheating furnace 1a, the second suspension rods 1f are arranged in an array in the preheating cavity 1a1, the bottom end of the first suspension rod 1c is rotatably connected with a preheating guide roller 1g, the preheating guide roller 1g is positioned at the bottom of the preheating induction coil 1d and has a certain gap with the inner bottom surface of the preheating cavity 1a1, the top end of the second suspension rod 1f penetrates through the preheating furnace 1a and is fixedly connected with the outside of the preheating furnace 1a, and a plurality of heating guide rollers 2c3 are rotatably connected in each heating channel 2 c.
The arrangement of the partition plate 2c1 and the backing plate 2c2 is used for protecting and installing the heating channel 2c, meanwhile, a plurality of heating guide rollers 2c3 which are rotatably connected with the first suspension rod 1c are arranged inside the heating channel 2c, the heating guide rollers 2c3 are used for carrying out motion guide on continuous steel entering the heating channel 2c, the friction force of the continuous steel in the passing process of the continuous steel in the heating channel 2c is reduced, the continuous steel can enter from one end of the heating channel 2c and leave from the other end of the heating channel 2c, and under the action of the heating rod 2d, quenching and heating on the continuous steel passing through the heating channel 2c are realized. Similarly, the second suspension rod 1f is arranged in the preheating furnace 1a, two ends of the preheating guide roller 1g are rotatably connected with the second suspension rod 1f respectively, the preheating guide roller 1g guides the continuous steel entering the preheating cavity 1a1 in a moving mode, the preheating induction coil 1d is suspended inside the preheating cavity 1a1, the continuous steel is different in size, part of the steel is possibly longer in length, the end part of the continuous steel is prevented from falling and colliding with the inner wall of the preheating cavity 1a1, the preheating guide roller 1g can also support the continuous steel in the preheating cavity 1a1, the continuous steel can smoothly pass through the preheating furnace 1a, and the preheating process is carried out.
The first suspension rod 1c, the second suspension rod 1f and the preheating furnace temperature probe 1h1 are all sleeved with a preheating furnace heat insulation sleeve 1i, the preheating furnace 1a is positioned in a preheating heat insulation layer 1b before quenching, the heating rod 2d and the heating furnace temperature probe 2e1 are all sleeved with a heating furnace heat insulation sleeve 2f, and the heating furnace heat insulation sleeve 2f is positioned in a heating heat insulation layer 2 b.
The preheating furnace heat insulation sleeve 1i is used for protecting the first suspension rod 1c, the second suspension rod 1f and the preheating furnace temperature probe 1h1, the heating furnace heat insulation sleeve 2f is used for protecting the heating rod 2d and the heating furnace temperature probe 2e1, and the first suspension rod 1c, the second suspension rod 1f, the preheating furnace temperature probe 1h1, the heating rod 2d and the heating furnace temperature probe 2e1 are prevented from being influenced by high temperature, broken, expanded and the like.
Referring to fig. 8, 9, 10, 11, 12, 13 and 14, the quenching mechanism 3 includes a quenching furnace 3a, an input channel 3b, a cooling fan 3c, a cooling tank 3d, a gantry 3e, a depth adjusting assembly 3f, a clamp assembly 3g, a cooling channel 3h and a wiping assembly 3i, the quenching furnace 3a is provided with a quenching tank 3a1, the quenching tank 3a1 is provided with the cooling tank 3d, one end of the quenching tank 3a1 is provided with the input channel 3b, the input channel 3b is provided with the cooling fan 3c, the quenching tank 3a1 is provided with the gantry 3e, the gantry 3e is provided with the depth adjusting assembly 3f and the clamp assembly 3g, one end of the quenching tank 3a1 far from the input channel 3b is provided with the cooling channel 3h, and the cooling channel 3h is provided with the wiping assembly 3 i.
An input end heat dissipation port 3b1 is arranged on the input channel 3b, the input end heat dissipation port 3b1 is communicated with an input end heat dissipation pipe 3b2, an input end heat dissipation pipe 3b2 is connected with a heat dissipation fan 3c, a cooling pipe 3h1 is arranged in the cooling channel 3h, a plurality of cooling nozzles 3h2 are arranged on the cooling pipe 3h1, a total heat dissipation pipeline 3h3 is arranged on the cooling channel 3h, an exhaust fan 3h4 is arranged on the total heat dissipation pipeline 3h3, the total heat dissipation pipeline 3h3 is arranged far away from the input channel 3b, the wiping component 3i comprises a wiping driving cylinder 3i1 and wiping cloth 3i2, a plurality of wiping driving cylinders 3i1 are arranged on the cooling channel 3h, the wiping driving cylinders 3i1 are arranged close to the input channel 3b, output shafts of the wiping driving cylinders 3i1 penetrate through the cooling channel 3h, and wiping cloth 3i2 is arranged at one end portion extending into the cooling channel 3 h.
The depth adjusting assembly 3f comprises a depth adjusting screw sliding table 3f1, a screw sliding table seat 3f2, supporting arms 3f3 and a hanging plate 3f4, two sides of the portal frame 3e are respectively provided with a depth adjusting screw sliding table 3f1, the depth adjusting screw sliding table 3f1 is connected with a screw sliding table seat 3f2 in a sliding mode, the screw sliding table seat 3f2 is provided with the supporting arms 3f3, the bottom ends of the two supporting arms 3f3 are provided with the hanging plate 3f 35 4, and the hanging plate 3f4 is provided with a plurality of through holes 3f 5.
The clamp assembly 3g comprises a height driving cylinder 3g1, a horizontal driving screw rod sliding table 3g2, a bidirectional screw rod sliding table 3g3 and a steel clamp 3g4, a plurality of height driving cylinders 3g1 are arranged on the portal frame 3e, the output end of the height driving cylinder 3g1 is in transmission connection with a horizontal driving screw rod sliding table 3g2, the output end of the horizontal driving screw rod sliding table 3g2 is in transmission connection with a bidirectional screw rod sliding table 3g3, and the two-way screw rod sliding table 3g3 is in transmission connection with a steel clamp 3g4 on two opposite side threads.
The cooling tank 3d is disposed in the quenching tank 3a1 and contains a cooling material, and in this embodiment, the type of the cooling material introduced into the cooling tank 3d may be water, an alkali polymer of water, a salt polymer of water, oil, liquid tin, liquid zinc, liquid bismuth, or liquid lead. On the other hand, the feed passage 3b is connected to the cooling tank 3d for feeding the continuous steel material into the cooling tank 3d to complete the quenching process of the continuous steel material fed into the quenching mechanism 3 by the cooling material. Since the continuous steel material which has been subjected to the heat hardening treatment has a temperature of about 800 ℃, in order to ensure that each portion of the continuous steel material can be rapidly cooled from the high-temperature austenite region to achieve the quenching effect, the present invention can maintain the temperature of the cooling material in the cooling tank 3d at between 250 ℃ and 450 ℃ by using the residual heat in the preheating mechanism 1 or the heating mechanism 2 before quenching. So designed, after the continuous steel material which has been heat-hardened is fed into the cooling tank 3d, it can be rapidly cooled to about 2 deg.CA temperature of about 80 ℃. With this arrangement, the austenite structure in the continuous steel material is transformed into the martensite structure and Fe3And C structure.
The input channel 3b is provided with an input end heat dissipation port 3b1, the input end heat dissipation port 3b1 is communicated with an input end heat dissipation pipe 3b2, and the input end heat dissipation pipe 3b2 is provided with a heat dissipation fan 3c for cooling the continuous steel conveyed to the input channel 3b once by the heat dissipation fan 3 c. When the depth adjustment screw rod sliding table 3f1 works, it carries out elevating movement to drive the support arm 3f3 that sets up on the screw rod sliding table seat 3f2, consequently, hanger plate 3f4 also can follow elevating movement, the continuity steel that gets into in the cooler bin 3d is placed on hanger plate 3f4, consequently, through changing the immersion depth of hanger plate 3f4 at cooler bin 3d, just can change the immersion depth of continuity steel in cooler bin 3d, when the through-hole 3f5 that hanger plate 3f4 set up was used for hanger plate 3f4 elevating movement, make the cooling material flow into in the cooler bin 3d again. The height driving cylinder 3g1 is used for adjusting the height of the steel clamp 3g4, the horizontal driving screw rod sliding table 3g2 is used for changing the horizontal position of the steel clamp 3g4, when the bidirectional screw rod sliding table 3g3 works, the two steel clamps 3g4 are driven to be away from or close to each other so as to clamp continuous steel, and the continuous steel is transferred into the cooling channel 3h under the action of the horizontal driving screw rod sliding table 3g 2. The cooling pipe 3h1 and the heat dissipation pipe 3h3 in the cooling channel 3h are used for cooling the continuous steel again, and the wiping driving cylinder 3i1 drives the wiping cloth 3i2 to contact the surface of the continuous steel when working, so as to wipe residual cooling substances.
The quenching process is that the high-temperature continuous steel is rapidly cooled to about 250-350 ℃, so that the austenite structure in the continuous steel is transformed into a martensite structure and Fe3And C structure. During the transformation of austenite into martensite, residual stress is simultaneously applied to the surface layer of the steel material, and not all austenite is completely transformed into martensite.
The input end of preheating mechanism 1 is equipped with first conveyer belt 4, the output of first conveyer belt 4 is connected with the input of preheating mechanism 1, it is equipped with second conveyer belt 5 to preheat between mechanism 1 and the heating mechanism 2 before quenching, the input of second conveyer belt 5 is connected with the output of preheating mechanism 1, the output of second conveyer belt 5 is connected with the input of heating mechanism 2 before quenching, second conveyer belt 5 has certain slope, be equipped with third conveyer belt 6 between heating mechanism 2 and the quenching mechanism 3 before quenching, the input of third conveyer belt 6 is connected with the output of heating mechanism 2 before quenching, the output of third conveyer belt 6 is connected with the input of quenching mechanism 3, the input end of quenching mechanism 3 is equipped with fourth conveyer belt 7, the input of fourth conveyer belt 7 is connected with the output of quenching mechanism 3.
The first conveying belt 4 is used for conveying continuous steel materials into the preheating mechanism 1, the second conveying belt 5 is used for conveying continuous steel materials after the preheating process and conveying the continuous steel materials into the heating mechanism 2 before quenching, the third conveying belt 6 is used for conveying continuous steel materials after the thermal hardening and tempering process and conveying the continuous steel materials into the quenching mechanism 3, and the fourth conveying belt 7 is used for conveying the continuous steel materials after the quenching process to other process equipment.
The working principle of the invention is as follows: preheating mechanism 1 carries out preheating treatment to continuous steel through induction heating's mode, and the infrared temperature sensor 1h of preheating end is used for measuring the temperature in preheating cavity 1a1, detects the temperature and goes to change the operating power who preheats controller 1e by corresponding temperature control system through preheating end infrared temperature sensor 1h, changes the temperature that preheats induction coil 1d during operation and gives off, realizes preheating the interior temperature automatic control of cavity 1a 1. Heating mechanism 2 quenches the heating to continuity steel before quenching, the protective gas lets in pipeline 2g and is connected with the device that lets in the protective gas, the protective gas can be nitrogen gas, the protective gas lets in pipeline 2g through the protective gas and lets in heating cavity 2a1 inwards, heating end infrared temperature sensor 2e is used for measuring the temperature in the heating cavity 2a1, detect the temperature and remove the operating power who changes power transformer 2i by corresponding temperature control system through heating end infrared temperature sensor 2e, change the temperature that gives off when heating rod 2d work, realize heating cavity 2a1 temperature automatic control. The cooling tank 3d is provided in the quenching bath 3a1 and contains a cooling material, and since the continuous steel material having been subjected to the heat hardening treatment has a temperature of about 800 c,at this time, in order to ensure that each part of the continuous steel material can be rapidly cooled from the high-temperature austenite region to achieve a quenching effect, the austenite structure inside the continuous steel material is transformed into a martensite structure and Fe3And C structure.
The preheating mechanism 1 and the heating mechanism 2 before quenching are arranged in the heat treatment equipment, so that the continuous steel can be heated to 800-1000 ℃, the quenching and tempering hardening effects on the continuous steel are achieved, and meanwhile, the quenching mechanism 3 is used for quenching the quenched continuous steel after being quenched, and most of austenite in the continuous steel can be converted into martensite.
Claims (4)
1. A continuous steel heat treatment apparatus, characterized by comprising:
a preheating mechanism (1) for preheating the continuous steel before quenching;
the heating mechanism (2) before quenching is arranged at the side part of the preheating mechanism (1), receives the continuous steel from the preheating mechanism (1), is used for carrying out a thermal tempering process before quenching on the continuous steel, and heats the continuous steel to 800-1000 ℃;
a quenching mechanism (3) which is arranged at the side part of the heating mechanism (2) before quenching, receives the continuous steel from the heating mechanism (2) before quenching, is used for quenching the continuous steel and quenching the continuous steel after quality adjustment;
the preheating mechanism (1) comprises a preheating furnace (1 a), a first suspension rod (1 c), a preheating induction coil (1 d), a preheating controller (1 e) and a preheating end infrared temperature measurement sensor (1 h), wherein a preheating cavity (1 a 1) is arranged in the preheating furnace (1 a), a preheating heat-insulating layer (1 b) which is arranged in the preheating furnace (1 a) and is preheated before quenching is coated outside the preheating cavity (1 a 1), a plurality of first suspension rods (1 c) are arranged in the preheating furnace (1 a), the first suspension rods (1 c) are arranged in an array in the preheating cavity (1 a 1), the preheating induction coil (1 d) is arranged at the bottom end of the first suspension rod (1 c), the preheating induction coil (1 d) is used for continuous steel to penetrate through, a certain gap is formed between the preheating induction coil (1 d) and the inner bottom surface of the preheating cavity (1 a 1), and the top end of the first suspension rod (1 c) penetrates through the preheating furnace (1 a), a preheating controller (1 e) electrically connected with the preheating induction coil (1 d) is arranged at one end extending out of the preheating furnace (1 a), a plurality of preheating end infrared temperature measurement sensors (1 h) are arranged at the top end array of the preheating furnace (1 a), and preheating furnace temperature measurement probes (1 h 1) of the preheating end infrared temperature measurement sensors (1 h) extend into the preheating cavity (1 a 1);
heating mechanism (2) is including heating furnace (2 a), heating channel (2 c), heating rod (2 d), heating end infrared temperature sensor (2 e), protection gas let in pipeline (2 g), protection gas air exhaust pipeline (2 h) and power transformer (2 i) before quenching, heating furnace (2 a) inside has heating cavity (2 a 1), and heating cavity (2 a 1) outside cladding has the heating heat preservation (2 b) of setting in heating furnace (2 a) inside, is equipped with a plurality ofly in heating furnace (2 a) heating channel (2 c), and heating channel (2 c) supply continuity steel to pass, and heating channel (2 c) set up on backing plate (2 c 2), the bottom of backing plate (2 c 2) is equipped with partition panel (2 c 1), partition panel (2 c 1) sets up on the interior bottom surface of heating cavity (2 a 1), is equipped with in heating cavity (2 a 1) a plurality of heating rod (2 d), heating rod (2 d) presents the array setting in heating cavity (2 a 1), and each heating passageway (2 c) lateral part all is equipped with heating rod (2 d), and the bottom of heating furnace (2 a) is equipped with and heats heating rod (2 d) electric connection power transformer (2 i), the top array of heating furnace (2 a) is equipped with a plurality of heating end infrared temperature sensor (2 e), heating furnace temperature probe (2 e 1) of heating end infrared temperature sensor (2 e) extend into inside heating cavity (2 a 1), and the lateral part of heating furnace (2 a) is equipped with protection gas lets in pipeline (2 g) with protection gas pipeline (2 h), protection gas let in pipeline (2 g) and protection gas bleed pipeline (2 h) extend and get into inside heating bleed cavity (2 a 1), and protection gas lets in pipeline (2 g) and protection gas pipeline (2 h) on be equipped with respectively and leads to air control valve (2 g 1) and control on, protection gas let in pipeline (2 g) and protection gas bleed pipeline (2 h) A valve (2 h 1);
quenching mechanism (3) including quenching furnace (3 a), input channel (3 b), cooling fan (3 c), cooler bin (3 d), portal frame (3 e), degree of depth adjusting part (3 f), clamp subassembly (3 g), cooling channel (3 h) and clean subassembly (3 i), be equipped with quenching groove (3 a 1) on quenching furnace (3 a), be equipped with in quenching groove (3 a 1) cooler bin (3 d), wherein one end of quenching groove (3 a 1) is equipped with input channel (3 b), be equipped with on input channel (3 b) cooling fan (3 c), be equipped with on quenching groove (3 a 1) portal frame (3 e), be equipped with on portal frame (3 e) degree of depth adjusting part (3 f) with clamp subassembly (3 g), the one end that input channel (3 b) was kept away from in quenching groove (3 a 1) is equipped with cooling channel (3 h), the wiping component (3 i) is arranged in the cooling channel (3 h);
be equipped with input thermovent (3 b 1) on input channel (3 b), input thermovent (3 b 1) intercommunication has input cooling tube (3 b 2), input cooling tube (3 b 2) are connected with cooling blower (3 c), are equipped with cooling tube (3 h 1) in cooling channel (3 h), be equipped with a plurality of cooling shower nozzles (3 h 2) on cooling tube (3 h 1), be equipped with total heat dissipation pipeline (3 h 3) on cooling channel (3 h), be equipped with air exhauster (3 h 4) on total heat dissipation pipeline (3 h 3), total heat dissipation pipeline (3 h 3) keep away from input channel (3 b) setting, clean subassembly (3 i) including cleaning actuating cylinder (3 i 1) and wiping cloth (3 i 2), be equipped with a plurality ofly on cooling channel (3 h) clean actuating cylinder (3 i 1), clean actuating cylinder (3 i 1) and be close to input channel (3 b) setting, an output shaft of the wiping driving cylinder (3 i 1) penetrates through the cooling channel (3 h), and the wiping cloth (3 i 2) is arranged at one end part extending into the cooling channel (3 h);
the depth adjusting assembly (3 f) comprises a depth adjusting screw rod sliding table (3 f 1), screw rod sliding table seats (3 f 2), supporting arms (3 f 3) and hanging plates (3 f 4), wherein one screw rod sliding table (3 f 1) is arranged on each of two sides of the portal frame (3 e), one screw rod sliding table seat (3 f 2) is connected to each depth adjusting screw rod sliding table (3 f 1) in a sliding mode, the supporting arms (3 f 3) are arranged on each screw rod sliding table seat (3 f 2), the hanging plates (3 f 4) are arranged at the bottom ends of the two supporting arms (3 f 3), and a plurality of through holes (3 f 5) are formed in each hanging plate (3 f 4);
clamp subassembly (3 g) are equipped with a plurality ofly including highly driving actuating cylinder (3 g 1), horizontal drive lead screw slip table (3 g 2), two-way lead screw slip table (3 g 3) and steel clamp (3 g 4) portal frame (3 e) highly driving actuating cylinder (3 g 1), the equal transmission of output of highly driving actuating cylinder (3 g 1) is connected with one horizontal drive lead screw slip table (3 g 2), the equal transmission of output of horizontal drive lead screw slip table (3 g 2) is connected with one two-way lead screw slip table (3 g 3), two-way lead screw slip table (3 g 3) revolve on the opposite both sides screw all the transmission be connected with one steel clamp (3 g 4).
2. The continuous steel heat treatment equipment according to claim 1, wherein a plurality of second suspension rods (1 f) are further arranged in the preheating furnace (1 a), the second suspension rods (1 f) are arranged in an array in the preheating cavity (1 a 1), the bottom end of the first suspension rod (1 c) is rotatably connected with a preheating guide roller (1 g), the preheating guide roller (1 g) is positioned at the bottom of the preheating induction coil (1 d) and has a certain gap with the inner bottom surface of the preheating cavity (1 a 1), the top end of the second suspension rod (1 f) penetrates through the preheating furnace (1 a) and is fixedly connected with the outside of the preheating furnace (1 a), and a plurality of heating guide rollers (2 c 3) are rotatably connected with each heating channel (2 c).
3. The continuous steel heat treatment equipment according to claim 2, wherein the first suspension rod (1 c), the second suspension rod (1 f) and the preheating furnace temperature probe (1 h 1) are externally sleeved with a preheating furnace heat insulation sleeve (1 i), the preheating furnace (1 a) is positioned in the preheating heat insulation layer (1 b) before quenching, the heating rod (2 d) and the heating furnace temperature probe (2 e 1) are externally sleeved with a heating furnace heat insulation sleeve (2 f), and the heating furnace heat insulation sleeve (2 f) is positioned in the heating heat insulation layer (2 b).
4. The continuous steel heat treatment equipment according to claim 1, wherein a first conveying belt (4) is arranged at the input end of the preheating mechanism (1), the output end of the first conveying belt (4) is connected with the input end of the preheating mechanism (1), a second conveying belt (5) is arranged between the preheating mechanism (1) and the heating mechanism (2) before quenching, the input end of the second conveying belt (5) is connected with the output end of the preheating mechanism (1), the output end of the second conveying belt (5) is connected with the input end of the heating mechanism (2) before quenching, the second conveying belt (5) has a certain gradient, a third conveying belt (6) is arranged between the heating mechanism (2) before quenching and the quenching mechanism (3), the input end of the third conveying belt (6) is connected with the output end of the heating mechanism (2) before quenching, the output end of the third conveying belt (6) is connected with the input end of the quenching mechanism (3), the input end of the quenching mechanism (3) is provided with a fourth conveying belt (7), and the input end of the fourth conveying belt (7) is connected with the output end of the quenching mechanism (3).
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| CN112575154B (en) * | 2020-12-02 | 2022-07-12 | 布莱凯特设备(苏州)有限公司 | Plate heat treatment cooling system |
| CN113957224A (en) * | 2021-10-13 | 2022-01-21 | 合肥三杰热处理有限公司 | High-strength heat treatment production line for slender key bars |
| CN114289589B (en) * | 2021-12-31 | 2024-04-12 | 浙江金固股份有限公司 | Light weight processing method and spinning device for workpiece |
| CN114941062B (en) * | 2022-05-25 | 2023-03-24 | 烟台永昌精密织针有限公司 | Method and device for vacuum quenching of knitting needle of circular knitting machine |
| CN116574886B (en) * | 2023-06-13 | 2024-05-28 | 溧阳市金昆锻压有限公司 | Steel quenching method |
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| CN202337800U (en) * | 2011-10-12 | 2012-07-18 | 大丰市永威机械厂 | Double-frequency induction heating quenching machine tool for casting products |
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Effective date of registration: 20211115 Address after: 213032 Benniu town Qijia village, Xinbei District, Changzhou City, Jiangsu Province Applicant after: Changzhou yifutai Special Steel Co., Ltd Address before: 213032 School of Aeronautical and mechanical engineering, Changzhou Institute of technology, No. 666, Liaohe Road, Xinbei District, Changzhou City, Jiangsu Province Applicant before: Wu Guang |
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