CN104032112A - Multifunctional heat treatment system for steel pipe - Google Patents
Multifunctional heat treatment system for steel pipe Download PDFInfo
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- CN104032112A CN104032112A CN201410269347.6A CN201410269347A CN104032112A CN 104032112 A CN104032112 A CN 104032112A CN 201410269347 A CN201410269347 A CN 201410269347A CN 104032112 A CN104032112 A CN 104032112A
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Abstract
The invention discloses a multifunctional heat treatment system for a steel pipe. The heat treatment system comprises six groups of roller paths, a medium-frequency induction furnace device, a high-temperature resistance furnace device, an ultra fast cooling device, an outward sprinkling and inward spraying device and a low-temperature resistance furnace device, wherein the six groups of roller paths consist of a feeding roller path group, a medium-frequency induction heating roller path group, an air cooling roller path group, an ultra fast cooling roller path group, an outward sprinkling and inward spraying roller path group and a discharging roller path group which are arranged in sequence; the medium-frequency induction furnace device is arranged between two adjacent roller paths of the medium-frequency induction heating roller path group; the high-temperature resistance furnace device is arranged on one side of the air cooling roller path group; the ultra fast cooling roller path group is arranged in the ultra fast cooling device; the outward sprinkling and inward spraying device is arranged on one side of the outward sprinkling and inward spraying roller path group; and the low-temperature resistance furnace device is arranged on one side of the discharging roller path group. According to the system, the whole process line is compact in design, the operation is simple and convenient, needed equipment can be combined and selected according to process requirements, and various heat treatment process requirements of the steel pipe are met.
Description
Technical field
The invention belongs to Steel Pipe Heat processing technology field, particularly a kind of multi-functional heat treatment system of steel pipe.
Background technology
Conventional steel thermal treatment type of heating is taking gas heating and resistive heating as main, and energy consumption is large, in heat-processed because heat-up rate is slow, working efficiency is not high, heat-up time is long, and in heat-processed, steel tube surface easily produces thicker iron scale, has reduced steel tube surface quality.Steel pipe is longer heat-up time, and steel pipe microtexture is difficult to obtain refinement, and improved performance is restricted.The angle that steel tube surface quality is good and linearity is high from serialization, automatization and the thermal treatment of heat treatment process is considered, it is best selection that the mode of employing Frequency Induction Heating is heat-treated steel pipe, it is fast that induction heating has rate of heating, energy-conserving and environment-protective, level of automation are high, heat-processed is easy to control and the feature such as manufacturing cost, but this kind of type of heating also exists soaking time to be restricted, the problem of the poor temperature uniformity of steel pipe integral.
In the production technique of middle pipe with small pipe diameter steel pipe, generally only need hot rolling or weld the large diameter steel pipe of several specifications, by reheating backward pull tube reducing operation, carry out the medium-small diameter steel pipe of production plurality of specifications, to expand the specification limit of product, enhance productivity; But through the middle operation that reheats, will there is austenite phase transformation in body tissue again, and tension reducing rolls rear temperature and is greater than Ar
3(generally 850 DEG C of left and right), phase transformation thereafter, if do not controlled, easily causes steel duct to organize thick, and performance reduces, and the phase transformation that need to adopt suitable control refrigeration technique to reheat after rolling it is controlled, and subtracts the tissue of rear steel pipe to improve heat.At present, the steel pipe after tube reducing rolls adopts the air cooling way carrying out on cold bed more, and cooling power is limited, limited to the improvement degree of tissue and performance.
Summary of the invention
The problems referred to above that exist for existing Steel Pipe Heat treatment technology, the invention provides a kind of multi-functional heat treatment system of steel pipe, in intermediate frequency furnace, high temperature resistance furnace, ultra-fast cooling device, outer pouring, spray water quenching device and low-temperature resistance stove and roller-way are combined into a total system, whole piece processing line is compact to design, easy and simple to handle, can be according to processing requirement, combination selection required equipment, meets the multiple thermal treatment process requirement of steel pipe.
The multi-functional heat treatment system of steel pipe of the present invention comprises spray apparatus and low-temperature resistance furnace apparatus in six groups of roller-ways, Medium frequency induction furnace apparatus, high temperature resistance furnace apparatus, ultra-fast cooling device, outer pouring; Six groups of roller-ways are arranged in order and form by spraying roller-way group and blanking roller-way group in charging roller group, Frequency Induction Heating roller-way group, air cooling roller-way group, ultrafast cold roller-way group, outer pouring; Medium frequency induction furnace apparatus is arranged between adjacent two roller-ways of Frequency Induction Heating roller-way group; High temperature resistance furnace apparatus is arranged on air cooling roller-way group one side; Ultrafast cold roller-way group is arranged on ultra-fast cooling device inside; In outer pouring, spray apparatus is arranged on spray roller-way group one side in outer pouring; Low-temperature resistance furnace apparatus is arranged on blanking roller-way group one side.
Between the roller-way of above-mentioned charging roller group, be provided with at least two cover feeding devices; Feeding device comprises loading supporting plate, material loading hydro-cylinder and material loading guide pillar; The end face of loading supporting plate is inclined-plane, and the low side of its end face is provided with material loading baffle plate; The bottom surface of loading supporting plate and material loading hydro-cylinder are assembled together, and are fixed with material loading guide pillar; One side of each feeding device is provided with feeding skid, and feeding skid is positioned at the high-end of each loading supporting plate end face.
Between the roller-way of above-mentioned blanking roller-way group, be provided with at least two cover blanking devices; Blanking device comprises blanking support plate, blanking hydro-cylinder and blanking guide pillar; The end face of blanking support plate is inclined-plane, and the low side of its end face is provided with discharge flapper; The bottom surface of blanking support plate and blanking hydro-cylinder are assembled together, and are fixed with blanking guide pillar; One side of each blanking device is provided with blanking rack, and blanking rack is positioned at the low side of each blanking support plate end face.
Above-mentioned Medium frequency induction furnace apparatus comprises Medium Frequency Induction Heating Furnace and lifting device; Base and the lifting device of Medium Frequency Induction Heating Furnace are assembled together, and Medium Frequency Induction Heating Furnace is arranged between adjacent two roller-ways of Frequency Induction Heating roller-way; Lifting device is worm and gear elevator, and top is fixedly connected with Medium Frequency Induction Heating Furnace base, drives lifting by shake handwheel.
Above-mentioned high temperature resistance furnace apparatus comprises high temperature resistance furnace and high temperature resistance furnace opening and closing lid and furnace bottom tiling arrangement; High temperature resistance furnace comprises bell and furnace bottom, and furnace bottom and holding furnace base are hinged; High temperature resistance furnace is fixed with high temperature resistance furnace charge arm;
High temperature resistance furnace opening and closing lid and furnace bottom tiling arrangement comprise furnace bottom fascinate cylinder pedestal, furnace bottom fascinate oil cylinder, bracing frame, opening and closing lid cylinder pedestal, opening and closing lid oil cylinder, chain gear apparatus, double strand chain, chain Connection Block and opening and closing lid hinged seat; Chain Connection Block is fixed on bell upper surface, chain Connection Block is connected with double strand chain one end, double strand chain hangs on the chain gear apparatus on bracing frame, and the double strand chain the other end and opening and closing lid oil cylinder are assembled together, and opening and closing lid oil cylinder lower end is connected with bracing frame by bearing pin; Bracing frame is fixed on the grate of furnace bottom, for supporting opening and closing lid oil cylinder, chain gear apparatus and double strand chain; On bracing frame, be equipped with limit switch, control the maximum angle that bell is opened; The furnace bottom oil cylinder lower end of fascinating is connected by bearing pin and the furnace bottom cylinder pedestal that fascinates, and upper end is connected by bearing pin with bracing frame, mounting limit switch on furnace bottom supporting seat;
The leading portion of high temperature resistance furnace charge arm extends between adjacent two roller-ways of air cooling roller-way group, and higher than roller-way level height;
Above-mentioned low-temperature resistance furnace apparatus comprises low-temperature resistance stove, low-temperature resistance furnace charge arm and low-temperature resistance stove opening and closing lid and furnace bottom tiling arrangement; Low-temperature resistance furnace structure is identical with high temperature resistance furnace; Low-temperature resistance stove opening and closing lid is identical with furnace bottom tiling arrangement with furnace bottom tiling arrangement structure and high temperature resistance furnace opening and closing lid; Low-temperature resistance furnace charge arm configuration is identical with high temperature resistance furnace charge arm, and its front end extends between adjacent two roller-ways of blanking roller-way group.
In above-mentioned two opening and closing lids and furnace bottom tiling arrangement, 2 synchronous hydraulic cylinders can, by the switching of chain and limit switch control bell, can ensure normal input and output material requirement; By 2 synchronous hydraulic cylinders and limit switch and obliquity sensor, control the accurate angle of furnace bottom and fascinate, complete single steel pipe turnover stove.
Above-mentioned ultra-fast cooling device comprises water shutoff framework, support frame, nozzle unit, nozzle bracket, nozzle bracket guide pillar and nozzle bracket hydro-cylinder; Water shutoff framework is the case structure of both ends open, and side is provided with transparent toughened glass viewing window, and inside is provided with support frame for supporting; Multiple nozzle bracket hydro-cylinders are arranged on outside water shutoff frame upper surface; A nozzle bracket in each nozzle bracket hydro-cylinder and water shutoff framework is assembled together, for lifting nozzle bracket; On each nozzle bracket, be fixed with multiple nozzle units, and on each nozzle bracket, be provided with nozzle bracket guide pillar; The end of water shutoff framework inside is provided with an air blowing air-dry apparatus, and air blowing air-dry apparatus is annular, and inside is provided with multiple jet nozzles, and each jet nozzle is communicated with the inlet pipe on air blowing air-dry apparatus.
Described each nozzle unit is columnar structured, comprises a supper-fast quenching cooler of steel pipe and a gas-mist cooling device; The supper-fast quenching cooler of steel pipe and gas-mist cooling device are fixed together; Gas-mist cooling device inside is provided with multiple aerial fog nozzles, and each aerial fog nozzle is communicated with the cold air inlet mist of aerosol pipe; Each R-joining nozzle in the supper-fast quenching cooler of steel pipe is communicated with ultrafast cold water inlet pipe; Ultrafast cold water inlet pipe and the cold air inlet mist of aerosol Guan Jun extend to outside water shutoff framework; Each nozzle unit is arranged between adjacent two roller-ways of ultrafast cold roller-way group.
Adopt the multi-functional heat treatment system of above-mentioned steel pipe to heat-treat steel pipe, realize respectively as required the Steel Pipe Heat processing of following processing method:
1, intermediate frequency diathermanous → air cooling → quenching;
2, intermediate frequency diathermanous → quenching → tempering;
3, intermediate frequency diathermanous → cooling (temperature range the is cooling) → air cooling of air cooling → control;
4, intermediate frequency diathermanous → insulation → air cooling;
5, intermediate frequency diathermanous → insulation → quench;
6, intermediate frequency diathermanous → insulation → quenching → tempering;
7, intermediate frequency diathermanous → be incubated → control cooling (temperature range is cooling) → air cooling;
8, intermediate frequency diathermanous → be incubated → control cooling (temperature range is cooling) → insulation → air cooling;
9, intermediate frequency diathermanous → be incubated → control cooling (temperature range is cooling) → air cooling → quenching;
10, intermediate frequency diathermanous → be incubated → control cooling (temperature range is cooling) → air cooling → quenching → tempering;
11, annealing;
12, timeliness.
Following steps are implemented in the realization of the heat-treatment technology method of above-mentioned steel pipe as required selectivity:
(1) material loading: steel pipe is placed on the roller-way of charging roller group by feeding device;
(2) heating in medium frequency: start charging roller group and steel pipe is sent on the roller-way of Frequency Induction Heating roller-way group, start Medium Frequency Induction Heating Furnace and Frequency Induction Heating roller-way group, make Medium Frequency Induction Heating Furnace carry out induction heating to steel pipe, and steel pipe is sent on the roller-way of air cooling roller-way group;
(3) high temperature resistance furnace insulation: high temperature resistance furnace fascinates before steel pipe enters air cooling roller-way group; In the time that steel pipe enters air cooling roller-way group completely and be parked on the roller-way of high temperature resistance stokehold, start high temperature resistance furnace opening and closing lid and furnace bottom tiling arrangement; Open high temperature resistance furnace bell, return high temperature resistance furnace, by material arm, steel pipe is lifted, steel pipe enters in high temperature resistance furnace, then closes high temperature resistance furnace bell, and steel pipe is carried out to samming insulation; After samming insulation finishes, start high temperature resistance furnace opening and closing lid and furnace bottom tiling arrangement; Open high temperature resistance furnace bell, rotate high temperature resistance furnace, steel pipe enters on material arm, and under material arm, general who has surrendered's steel pipe is put on the roller-way of air cooling roller-way group; Start air cooling roller-way group and follow-up roller-way group, steel pipe is sent on the follow-up roller-way of air cooling roller-way group; Then enter on the roller-way of ultrafast cold roller-way group;
(4) control cooling: by regulating the height of each nozzle unit of ultra-fast cooling device, make steel pipe be positioned at each nozzle unit center, pass into water coolant or by the gentle aerosol that mixes of water, control cooling to steel pipe until quench to nozzle unit; Then by the cleaning of blowing of air blowing air-dry apparatus, steel pipe enters spray roller-way group in outer pouring;
(5) in outer pouring, spray and quench: by spray apparatus in outer pouring, steel pipe is carried out to spray in outer pouring and quench, be then put back in outer pouring and spray in roller-way group; Steel pipe is by spraying roller-way group in outer pouring and blanking roller-way group is transported to roller-way end;
(6) low-temperature resistance stove tempering heating: fascinate high temperature resistance furnace before steel pipe enters air cooling roller-way in the time that steel pipe stops to roller-way end, start low-temperature resistance stove opening and closing lid and furnace bottom tiling arrangement; Open low-temperature resistance stove bell, return low-temperature resistance stove, by material arm, steel pipe is lifted, steel pipe enters in low-temperature resistance stove, then closes low-temperature resistance stove bell, and steel pipe is carried out to heating and thermal insulation; After insulation finishes, start low-temperature resistance stove opening and closing lid and furnace bottom tiling arrangement; Open low-temperature resistance stove bell, rotate low-temperature resistance stove, steel pipe enters on material arm, and under material arm, general who has surrendered's steel pipe is put on the roller-way of blanking roller-way group;
(7) blanking: by blanking device, steel pipe is taken off, complete thermal treatment.
The invention has the beneficial effects as follows:
The multi-functional heat treatment system of steel pipe has arranged by processing requirement the equipment such as quenching device of spraying water in induction heater, high low temperature resistance furnace, ultra-fast cooling device, outer pouring, whole piece processing line is compact to design, easy and simple to handle, can be according to processing requirement, combination selection required equipment, meets the multiple thermal treatment process requirement of steel pipe;
Adopt medium-frequency induction furnace to heat steel pipe, rate of heating is fast, and steel tube surface only produces one deck iron scale as thin as a wafer, and after heating, body grain-size is little, is beneficial to the improvement of steel pipe tissue and the lifting of performance; Steel pipe after adopting resistance furnace to induction heating carries out soaking insulation, resistance furnace shifts to an earlier date empty stove and is warming up to steel pipe heating target temperature (entering stove to temperature), shorten the steel pipe heating and thermal insulation time, solve that resistance furnace heat-up rate is slow and the short problem of induction heating soaking time has improved Steel Pipe Heat work for the treatment of efficiency greatly;
Adopt with the supper-fast quenching cooler of steel pipe of annular R-joining nozzle unit cooling to the steel pipe control of spray water, annular R-joining nozzle can make the water coolant of nozzle ejection form the larger circular water hole of hydraulic pressure, the steel pipe that diameter is greater than Circularhole diameter is during by annular R-joining nozzle, water coolant is ejected into steel tube surface with certain even angle, the steam film forming between the remaining water of steel tube surface and steel pipe will be purged, can reach contacting completely between steel pipe and water coolant, realize nucleate boiling, cooling performance is obvious, greatly accelerate steel pipe process of cooling, for controlling the cooling process of steel pipe before transformation temperature, improve tissue and the performance of steel, obtain good integrative organization's performance equipment guarantee is provided,
Induction heater can be adjusted up and down according to the specification of steel pipe, so that the medullary ray of process furnace interior loop and steel pipe medullary ray be consistent, thereby ensures that body Heating temperature is even;
According to the specification of steel pipe, the nozzle unit of ultra-fast cooling device can move up and down with nozzle framework, ensure annular nozzle medullary ray and the coordination of different diameter steel pipe, can make different size steel pipe spiral advance time, circumferential uniform contact is to water coolant or aerosol, and steel pipe is circumferentially cooling even.
Ultra-fast cooling device end is provided with air blowing air-dry apparatus, the pressurized air of the R-joining nozzle ejection on it, steel pipe water spray steam cooling or that spray cooling forms is cleaned, prepare for controlling cooling rear steel pipe temperature detection, can effectively reduce the cold rear thermometric error of control.
Brief description of the drawings
Fig. 1 is the multi-functional heat treatment system structural representation of the steel pipe in the embodiment of the present invention;
Fig. 2 is the feeding device structural representation in the embodiment of the present invention;
Fig. 3 is Medium frequency induction furnace apparatus and the Frequency Induction Heating roller-way group structural representation in the embodiment of the present invention;
Fig. 4 is the high temperature resistance furnace apparatus structure schematic diagram in the embodiment of the present invention;
Fig. 5 is high temperature resistance furnace opening and closing lid and the furnace bottom tiling arrangement local section structural representation in the embodiment of the present invention;
Fig. 6 be the A-A of Fig. 5 to local structure schematic diagram,
Fig. 7 be the B-B of Fig. 5 to local structure schematic diagram,
Fig. 8 is that the P of Fig. 5 is to local structure schematic diagram;
Fig. 9 is the ultra-fast cooling device structural representation in the embodiment of the present invention;
Figure 10 is the side-view of Fig. 6;
Figure 11 is the nozzle unit cross-sectional view of the ultra-fast cooling device in the embodiment of the present invention;
Figure 12 is the air blowing air-dry apparatus cross-sectional view of the ultra-fast cooling device in the embodiment of the present invention;
Figure 13 is the side-view of Figure 12;
Figure 14 is spray apparatus structural representation in the outer pouring in the embodiment of the present invention;
Figure 15 is the blanking device structural representation in the embodiment of the present invention;
In figure, 1, charging roller group, 2, Frequency Induction Heating roller-way group, 3, air cooling roller-way group, 4, ultrafast cold roller-way group, 5, spray roller-way group in outer pouring, 6, blanking roller-way group, 7, feeding device, 8, Medium frequency induction furnace apparatus, 9, high temperature resistance furnace apparatus, 10, ultra-fast cooling device, 11, spray apparatus in outer pouring, 12, low-temperature resistance furnace apparatus, 13, blanking device, 14, feeding skid, 15, loading supporting plate, 16, material loading hydro-cylinder, 17, material loading guide pillar, 18, medium-frequency induction furnace lifting device, 19, medium-frequency induction furnace, 20, high temperature resistance furnace bell, 21, high temperature resistance furnace furnace bottom, 22, high temperature resistance furnace opening and closing lid and furnace bottom tiling arrangement, 22-1, the furnace bottom cylinder pedestal that fascinates, 22-2, the furnace bottom oil cylinder that fascinates, 22-3, bracing frame, 22-4, opening and closing lid cylinder pedestal, 22-5, opening and closing lid oil cylinder, 22-6, chain gear apparatus, 22-7, double strand chain, 22-8, chain Connection Block, 22-9, opening and closing lid hinged seat, 23, high temperature resistance furnace charge arm, 24, water shutoff framework, 25, support frame, 26, air blowing air-dry apparatus, 26-1, jet nozzle, 27, nozzle unit, 27-1, nozzle governing cage plate, 27-2, nozzle unit shell, 27-3, cooling water layer, 27-4, guide water board, 27-5, water guide post, 27-6, R-joining nozzle, 27-7, current stabilization layer wallboard, 27-8, set screw, 27-9, aerosol guide hole, 27-10, aerosol guide plate, 27-11, the cold nozzle unit shell of aerosol, 27-12, aerial fog nozzle, 28, nozzle bracket, 29, nozzle bracket guide pillar, 30, nozzle bracket hydro-cylinder, 31, ultrafast cold water inlet pipe, 32, the cold air inlet mist of aerosol pipe, 33, viewing window, 34, outer shower device, 35, hold-down gear, 36, interior spray spoons materials device, 37 outward, swivel arrangement, 38, blanking support plate, 39, blanking hydro-cylinder, 40 blanking guide pillars, 41, blanking rack.
Embodiment
The supper-fast quenching cooler of steel pipe adopting in the embodiment of the present invention is the supper-fast quenching cooler of the patent CN disclosed steel pipe of 102876874 B.
The multi-functional heat treatment system structure of the steel pipe in the embodiment of the present invention as shown in Figure 1, comprises spray apparatus 11 and low-temperature resistance furnace apparatus 12 in six groups of roller-ways, Medium frequency induction furnace apparatus 8, high temperature resistance furnace apparatus 9, ultra-fast cooling device 10, outer pouring; Six groups of roller-ways are arranged in order and form by spraying roller-way group 5 and blanking roller-way group 6 in charging roller group 1, Frequency Induction Heating roller-way group 2, air cooling roller-way group 3, ultrafast cold roller-way group 4, outer pouring;
Medium frequency induction furnace apparatus 8 is arranged between adjacent two roller-ways of Frequency Induction Heating roller-way group 2, as shown in Figure 3; High temperature resistance furnace apparatus 9 is arranged on air cooling roller-way group 3 one sides; Ultrafast cold roller-way group 4 is arranged on ultra-fast cooling device 10 inside; In outer pouring, spray apparatus 11 is arranged on spray roller-way group 5 one sides in outer pouring; Low-temperature resistance furnace apparatus 12 is arranged on blanking roller-way group 6 one sides;
Between the roller-way of charging roller group, be provided with two cover feeding devices 7; As shown in Figure 2, feeding device 7 comprises loading supporting plate 15, material loading hydro-cylinder 16 and material loading guide pillar 17; The end face of loading supporting plate 15 is inclined-plane, and the low side of its end face is provided with material loading baffle plate; The bottom surface of loading supporting plate 15 and material loading hydro-cylinder 16 are assembled together, and are fixed with material loading guide pillar 17; One side of each feeding device is provided with feeding skid 14, and feeding skid is positioned at the high-end of each loading supporting plate 15 end faces;
Between the roller-way of blanking roller-way group, be provided with two cover blanking devices 13; As shown in figure 15, blanking device 13 comprises blanking support plate 38, blanking hydro-cylinder 39 and blanking guide pillar 40; The end face of blanking support plate 38 is inclined-plane, and the low side of its end face is provided with discharge flapper; The bottom surface of blanking support plate 38 and blanking hydro-cylinder 39 are assembled together, and are fixed with blanking guide pillar 40; One side of each blanking device is provided with blanking rack 41, and blanking rack 41 is positioned at the low side of each blanking support plate 38 end faces;
As shown in Figure 3, Medium frequency induction furnace apparatus 8 comprises Medium Frequency Induction Heating Furnace 19 and lifting device 18; The base of Medium Frequency Induction Heating Furnace 19 and lifting device 18 are assembled together, and Medium Frequency Induction Heating Furnace arranges 19 between adjacent two roller-ways of Frequency Induction Heating roller-way 2; Lifting device is worm and gear elevator, and top is fixedly connected with Medium Frequency Induction Heating Furnace base, drives lifting by shake handwheel;
As shown in Figure 4, high temperature resistance furnace apparatus 9 comprises high temperature resistance furnace and high temperature resistance furnace opening and closing lid and furnace bottom tiling arrangement 22; High temperature resistance furnace comprises bell 20 and furnace bottom 21, and furnace bottom 20 is hinged with holding furnace base; High temperature resistance furnace charge arm 23 is fixed on furnace bottom 21;
As shown in Fig. 5 ~ 8, high temperature resistance furnace opening and closing lid and furnace bottom tiling arrangement 22 comprise furnace bottom fascinate cylinder pedestal 22-1, furnace bottom fascinate oil cylinder 22-2, bracing frame 22-3, opening and closing lid cylinder pedestal 22-4, opening and closing lid oil cylinder 22-5, chain gear apparatus 22-6, double strand chain 22-7, chain Connection Block 22-8 and opening and closing lid hinged seat 22-9; Bell 20 and furnace bottom 21 are hinged by opening and closing lid hinged seat 22-9;
Chain Connection Block 22-8 is fixed on bell 20 upper surfaces, chain Connection Block 22-8 is connected with double strand chain 22-7 one end, double strand chain 22-7 hangs on the chain gear apparatus 22-6 on bracing frame, the double strand chain 22-7 the other end and opening and closing lid oil cylinder 22-5 are assembled together, and opening and closing lid oil cylinder 22-5 lower end is connected with bracing frame 22-2 by bearing pin;
Bracing frame 22-2 is welded on the grate of furnace bottom 21, for supporting opening and closing lid oil cylinder 22-5, chain gear apparatus 22-6 and double strand chain 22-7; On bracing frame 22-3, be equipped with limit switch, control the maximum angle that bell 20 is opened; The furnace bottom oil cylinder 22-2 lower end of fascinating is connected by bearing pin and the furnace bottom cylinder pedestal 22-1 that fascinates, and upper end is connected by bearing pin with bracing frame 22-3, and mounting limit switch on furnace bottom supporting seat, controls the maximum angle that furnace bottom 21 fascinates;
The leading portion of high temperature resistance furnace charge arm 23 extends between adjacent two roller-ways of air cooling roller-way group 3, at furnace bottom during in heating and thermal insulation state, and the level top of material arm in roller-way;
Low-temperature resistance furnace apparatus comprises low-temperature resistance stove and low-temperature resistance stove opening and closing lid and furnace bottom tiling arrangement; Low-temperature resistance stove opening and closing lid is identical with furnace bottom tiling arrangement with furnace bottom tiling arrangement structure and high temperature resistance furnace opening and closing lid; Low-temperature resistance furnace charge arm configuration is identical with insulation furnace charge arm, and its front end extends between adjacent two roller-ways of blanking roller-way group; Low-temperature resistance furnace structure is identical with high temperature resistance furnace;
As shown in Figures 9 and 10, ultra-fast cooling device water shutoff framework 24, support frame 25, air blowing air-dry apparatus 26, nozzle unit 27, nozzle bracket 28, nozzle bracket guide pillar 29, nozzle bracket hydro-cylinder 30, ultrafast cold water inlet pipe 31 and the cold air inlet mist of aerosol pipe 32;
Water shutoff framework is the case structure of 24 both ends open, and side is provided with transparent toughened glass viewing window 33, and for observing the cooling situation of steel pipe, water shutoff framework 24 inside are provided with support frame 25 for supporting; 2 nozzle bracket hydro-cylinders 30 are arranged on outside water shutoff framework 24 upper surfaces; Each nozzle bracket hydro-cylinder 30 is assembled together with a nozzle bracket 28 in water shutoff framework 24, for lifting nozzle bracket 28; On each nozzle bracket 28, be fixed with 3 nozzle units 27, and on each nozzle bracket 28, be provided with nozzle bracket guide pillar 29; The end of water shutoff framework 24 inside is provided with an air blowing air-dry apparatus 26, and air blowing air-dry apparatus 26 is annular, and as shown in Figures 12 and 13, inside is provided with 6 jet nozzle 26-1 to structure, and each jet nozzle 26-1 is communicated with the inlet pipe on air blowing air-dry apparatus;
As shown in figure 11, each nozzle unit 27 is columnar structured, comprises a supper-fast quenching cooler of steel pipe and a gas-mist cooling device; The supper-fast quenching cooler of steel pipe and gas-mist cooling device are fixed together; Gas-mist cooling device inside is provided with multiple aerial fog nozzle 27-12, and each aerial fog nozzle 27-12 is communicated with the cold air inlet mist of aerosol pipe 32; Each R-joining nozzle in the supper-fast quenching cooler of steel pipe is communicated with ultrafast cold water inlet pipe 31; Ultrafast cold water inlet pipe 31 and the cold air inlet mist of aerosol pipe 32 all extend to outside water shutoff framework 24;
Each nozzle unit is arranged between adjacent two roller-ways of ultrafast cold roller-way group 4.
Embodiment 1
The selected steel pipe specification of the present embodiment is Φ 139.7 × 7.72 × 5000 mm, and process for heat treatment of steel pipe method is: intermediate frequency is diathermanous → be incubated → control cooling → quenching → tempering, and processing step is as follows:
On the feeding skid in advance handling steel tubes extremely being tilted, and put successively; Start feeding device, the loading supporting plate on device holds up steel pipe from feeding skid, and steel pipe rolls on the loading supporting plate with postive stop baffle (material loading baffle plate), along with the reduction of loading supporting plate falls in charging roller group;
Frequency Induction Heating: start charging roller group and medium-frequency induction furnace roller-way group, steel pipe is moved forward, in steel pipe movement arrives medium-frequency induction furnace time, stop roller-way, adjust medium-frequency induction furnace height, steel pipe is positioned in the middle of medium-frequency induction furnace heater coil, then start roller-way in the other direction, steel pipe is stopped to supreme material level, wait for heating in medium frequency; Setting medium-frequency induction furnace Heating temperature is 1000 DEG C, and roller speed 3 m/min, start medium-frequency induction furnace, charging roller group and medium-frequency induction furnace roller-way group, and steel pipe is by the continuous rapid heating of medium-frequency induction furnace;
High temperature resistance furnace soaking insulation: high temperature resistance furnace is shifted to an earlier date to empty stove and be warming up to 1000 DEG C, and start opening and closing lid at steel pipe during in induction heating section and furnace bottom tiling arrangement tilts to high temperature resistance furnace into material level in advance; In the time of steel pipe operation stokehold, stop air cooling roller-way group, open fast bell, slowly return furnace bottom, steel pipe rolls in stove with high temperature resistance furnace charge arm, quick closedown bell, heating and thermal insulation 25min;
Control cooling: according to the external diameter of steel pipe, adjust the height of ultra-fast cooling device nozzle bracket, make steel pipe by time be positioned at the center of ring nozzle unit; Select water spray to control cooling, setting water spray pressure is 0.6MPa, roller speed 0.8m/s; After steel pipe has been incubated, start spray roller-way group in ultra-fast cooling device, air cooling roller-way group and outer pouring, steel pipe is come out of the stove and is carried by device cooling fast by roller-way; Control cooling front and back temperature and be respectively 880 DEG C and 450 DEG C;
Spray is quenched in outer pouring: control steel pipe after cold by outer pouring, spray that roller-way group is transported and the quenching device that stops spraying water to outer pouring on material level, by the material loading arm feeding with Hui Sidun principle to swivel arrangement, contact roller compresses steel pipe, carry out the interior spray of the outer pouring of steel pipe spin hardening cooling, the setting cool time is 10s, interior jet flow amount 320m
3/ h, outer pouring flow 720m
3/ h, cooling rear steel pipe moves to air blowing station, blows out steel pipe inner wall residuary water by being connected with compressed-air actuated nozzle from one end, and after air blowing finishes, blanking is sprayed in roller-way group to outer pouring, and after spraying in outer pouring, steel pipe temperature is 30 DEG C;
Low-temperature resistance stove heating and thermal insulation: start opening and closing lid and furnace bottom tiling arrangement low-temperature resistance stove is tilted to into material level; Start spray roller-way group and blanking roller-way group in outer pouring, steel pipe is moved to roller-way end, open fast bell, slowly return furnace bottom, steel pipe rolls in stove with low-temperature resistance furnace charge arm, and quick closedown bell is heated to 550 DEG C, after insulation 30min, come out of the stove to blanking roller-way group, air cooling;
The steel pipe that is chilled to room temperature is held up and is rolled into by blanking device on storing stand, products for further processing.
Embodiment 2
The selected steel pipe specification of the present embodiment is Φ 152.4 × 14 × 5000 mm, and process for heat treatment of steel pipe method is: intermediate frequency is diathermanous → and insulation → air cooling → control cooling → air cooling, processing step is as follows:
On the feeding skid in advance handling steel tubes extremely being tilted, and put successively; Start feeding device, the loading supporting plate on device holds up steel pipe from feeding skid, and steel pipe rolls on the loading supporting plate with postive stop baffle (material loading baffle plate), along with the reduction of loading supporting plate falls in charging roller group;
Frequency Induction Heating: start charging roller group and medium-frequency induction furnace roller-way group, steel pipe is moved forward, in steel pipe movement arrives medium-frequency induction furnace time, stop roller-way, adjust medium-frequency induction furnace height, steel pipe is positioned in the middle of medium-frequency induction furnace heater coil, then start roller-way in the other direction, steel pipe is stopped to supreme material level, wait for heating in medium frequency; Setting medium-frequency induction furnace Heating temperature is 1100 DEG C, and roller speed 2 m/min, start medium-frequency induction furnace, charging roller group and medium-frequency induction furnace roller-way group, and steel pipe is by the continuous rapid heating of medium-frequency induction furnace;
High temperature resistance furnace soaking insulation: high temperature resistance furnace is shifted to an earlier date to empty stove and be warming up to 1100 DEG C, and start opening and closing lid at steel pipe during in induction heating section and furnace bottom tiling arrangement tilts to high temperature resistance furnace into material level in advance; In the time of steel pipe operation stokehold, stop air cooling roller-way group, open fast bell, slowly return furnace bottom, steel pipe rolls in stove with high temperature resistance furnace charge arm, quick closedown bell, heating and thermal insulation 30min;
Air cooling: after steel pipe has been incubated, start air cooling roller-way group, steel pipe is come out of the stove, and controls speed and the traffic direction of roller-way, makes steel pipe slowly come and go and carry out air cooling back and forth in air cooling roller-way group;
Refrigeration is but: according to the external diameter of steel pipe, adjust the height of ultra-fast cooling device nozzle bracket, make steel pipe by time be positioned at the center of ring nozzle unit; Select water spray to control cooling, setting water spray pressure is 0.5MPa, roller speed 0.6m/s; When steel pipe air cooling to 900 DEG C (being measured by roller-way side Temperature Detector), start ultra-fast cooling device, steel pipe is carried by device accelerated controlled cooling fast by ultrafast cold roller-way group, and controlling cooled temperature is 550 DEG C;
Air cooling: the steel pipe of controlling after cold slowly comes and goes and transmits on roller-way, and air cooling is to room temperature;
The steel pipe that is chilled to room temperature is held up and is rolled into by blanking device on storing stand, products for further processing.
The above two routine embodiment, is only useful explanation of the present invention, is not that the present invention is done to other forms of restriction, the equivalent embodiment that any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or remodeling etc. changes; In every case be not depart from technical solution of the present invention content, according to technical spirit of the present invention, to any simple modification made for any of the above embodiments, equivalent variations and remodeling, still belong to the protection domain of invention technical scheme.
Claims (7)
1. a multi-functional heat treatment system for steel pipe, is characterized in that comprising spray apparatus and low-temperature resistance furnace apparatus in six groups of roller-ways, Medium frequency induction furnace apparatus, high temperature resistance furnace apparatus, ultra-fast cooling device, outer pouring; Six groups of roller-ways are arranged in order and form by spraying roller-way group and blanking roller-way group in charging roller group, Frequency Induction Heating roller-way group, air cooling roller-way group, ultrafast cold roller-way group, outer pouring; Medium frequency induction furnace apparatus is arranged between adjacent two roller-ways of Frequency Induction Heating roller-way group; High temperature resistance furnace apparatus is arranged on air cooling roller-way group one side; Ultrafast cold roller-way group is arranged on ultra-fast cooling device inside; In outer pouring, spray apparatus is arranged on spray roller-way group one side in outer pouring; Low-temperature resistance furnace apparatus is arranged on blanking roller-way group one side.
2. the multi-functional heat treatment system of a kind of steel pipe according to claim 1, is characterized in that described Medium frequency induction furnace apparatus comprises Medium Frequency Induction Heating Furnace and lifting device; Base and the lifting device of Medium Frequency Induction Heating Furnace are assembled together, and Medium Frequency Induction Heating Furnace is arranged between adjacent two roller-ways of Frequency Induction Heating roller-way; Lifting device is worm and gear elevator, and top is fixedly connected with Medium Frequency Induction Heating Furnace base, drives lifting by shake handwheel.
3. the multi-functional heat treatment system of a kind of steel pipe according to claim 1, is characterized in that described high temperature resistance furnace apparatus comprises high temperature resistance furnace and high temperature resistance furnace opening and closing lid and furnace bottom tiling arrangement; High temperature resistance furnace comprises bell and furnace bottom, and furnace bottom and holding furnace base are hinged; High temperature resistance furnace is fixed with high temperature resistance furnace charge arm; High temperature resistance furnace opening and closing lid and furnace bottom tiling arrangement comprise furnace bottom fascinate cylinder pedestal, furnace bottom fascinate oil cylinder, bracing frame, opening and closing lid cylinder pedestal, opening and closing lid oil cylinder, chain gear apparatus, double strand chain, chain Connection Block and opening and closing lid hinged seat; Chain Connection Block is fixed on bell upper surface, chain Connection Block is connected with double strand chain one end, double strand chain hangs on the chain gear apparatus on bracing frame, and the double strand chain the other end and opening and closing lid oil cylinder are assembled together, and opening and closing lid oil cylinder lower end is connected with bracing frame by bearing pin; Bracing frame is fixed on the grate of furnace bottom, for supporting opening and closing lid oil cylinder, chain gear apparatus and double strand chain; On bracing frame, be equipped with limit switch, control the maximum angle that bell is opened; The furnace bottom oil cylinder lower end of fascinating is connected by bearing pin and the furnace bottom cylinder pedestal that fascinates, and upper end is connected by bearing pin with bracing frame, mounting limit switch on furnace bottom supporting seat; The leading portion of high temperature resistance furnace charge arm extends between adjacent two roller-ways of air cooling roller-way group, and higher than roller-way level height;
Described low-temperature resistance furnace apparatus comprises low-temperature resistance stove, low-temperature resistance furnace charge arm and low-temperature resistance stove opening and closing lid and furnace bottom tiling arrangement; Low-temperature resistance furnace structure is identical with high temperature resistance furnace; Low-temperature resistance stove opening and closing lid is identical with furnace bottom tiling arrangement with furnace bottom tiling arrangement structure and high temperature resistance furnace opening and closing lid; Low-temperature resistance furnace charge arm configuration is identical with high temperature resistance furnace charge arm, and its front end extends between adjacent two roller-ways of blanking roller-way group.
4. the multi-functional heat treatment system of a kind of steel pipe according to claim 1, is characterized in that described ultra-fast cooling device comprises water shutoff framework, support frame, nozzle unit, nozzle bracket, nozzle bracket guide pillar and nozzle bracket hydro-cylinder; Water shutoff framework is the case structure of both ends open, and side is provided with transparent toughened glass viewing window, and inside is provided with support frame for supporting; Multiple nozzle bracket hydro-cylinders are arranged on outside water shutoff frame upper surface; A nozzle bracket in each nozzle bracket hydro-cylinder and water shutoff framework is assembled together, for lifting nozzle bracket; On each nozzle bracket, be fixed with multiple nozzle units, and on each nozzle bracket, be provided with nozzle bracket guide pillar; The end of water shutoff framework inside is provided with an air blowing air-dry apparatus, and air blowing air-dry apparatus is annular, and inside is provided with multiple jet nozzles, and each jet nozzle is communicated with the inlet pipe on air blowing air-dry apparatus.
5. the multi-functional heat treatment system of a kind of steel pipe according to claim 4, is characterized in that described nozzle unit is columnar structured, comprises a supper-fast quenching cooler of steel pipe and a gas-mist cooling device; The supper-fast quenching cooler of steel pipe and gas-mist cooling device are fixed together; Gas-mist cooling device inside is provided with multiple aerial fog nozzles, and each aerial fog nozzle is communicated with the cold air inlet mist of aerosol pipe; Each R-joining nozzle in the supper-fast quenching cooler of steel pipe is communicated with ultrafast cold water inlet pipe; Ultrafast cold water inlet pipe and the cold air inlet mist of aerosol Guan Jun extend to outside water shutoff framework; Each nozzle unit is arranged between adjacent two roller-ways of ultrafast cold roller-way group.
6. the method that the multi-functional heat treatment system of a kind of steel pipe described in employing right 1 is heat-treated steel pipe, is characterized in that realizing respectively as required the Steel Pipe Heat processing of following processing method:
(1) intermediate frequency diathermanous → air cooling → quenching;
(2) intermediate frequency diathermanous → quenching → tempering;
(3) intermediate frequency diathermanous → cooling → air cooling of air cooling → control;
(4) intermediate frequency diathermanous → insulation → air cooling;
(5) intermediate frequency diathermanous → insulation → quench;
(6) intermediate frequency diathermanous → insulation → quenching → tempering;
(7) intermediate frequency diathermanous → be incubated → control cooling → air cooling;
(8) intermediate frequency diathermanous → be incubated → control cooling → insulation → air cooling;
(9) intermediate frequency diathermanous → be incubated → control cooling → air cooling → quenching;
(10) intermediate frequency diathermanous → be incubated → control cooling → air cooling → quenching → tempering;
(11) annealing;
(12) timeliness.
7. the method that steel pipe is heat-treated according to claim 6, is characterized in that selecting as required to implement following steps:
(1) material loading: steel pipe is placed on the roller-way of charging roller group by feeding device;
(2) heating in medium frequency: start charging roller group and steel pipe is sent on the roller-way of Frequency Induction Heating roller-way group, start Medium Frequency Induction Heating Furnace and Frequency Induction Heating roller-way group, make Medium Frequency Induction Heating Furnace carry out induction heating to steel pipe, and steel pipe is sent on the roller-way of air cooling roller-way group;
(3) high temperature resistance furnace insulation: high temperature resistance furnace fascinates before steel pipe enters air cooling roller-way group; In the time that steel pipe enters air cooling roller-way group completely and be parked on the roller-way of high temperature resistance stokehold, start high temperature resistance furnace opening and closing lid and furnace bottom tiling arrangement; Open high temperature resistance furnace bell, return high temperature resistance furnace, by material arm, steel pipe is lifted, steel pipe enters in high temperature resistance furnace, then closes high temperature resistance furnace bell, and steel pipe is carried out to samming insulation; After samming insulation finishes, start high temperature resistance furnace opening and closing lid and furnace bottom tiling arrangement; Open high temperature resistance furnace bell, rotate high temperature resistance furnace, steel pipe enters on material arm, and under material arm, general who has surrendered's steel pipe is put on the roller-way of air cooling roller-way group; Start air cooling roller-way group and follow-up roller-way group, steel pipe is sent on the follow-up roller-way of air cooling roller-way group; Then enter on the roller-way of ultrafast cold roller-way group;
(4) control cooling: by regulating the height of each nozzle unit of ultra-fast cooling device, make steel pipe be positioned at each nozzle unit center, pass into water coolant or by the gentle aerosol that mixes of water, control cooling to steel pipe until quench to nozzle unit; Then by the cleaning of blowing of air blowing air-dry apparatus, steel pipe enters spray roller-way group in outer pouring;
(5) in outer pouring, spray and quench: by spray apparatus in outer pouring, steel pipe is carried out to spray in outer pouring and quench, be then put back in outer pouring and spray in roller-way group; Steel pipe is by spraying roller-way group in outer pouring and blanking roller-way group is transported to roller-way end;
(6) low-temperature resistance stove tempering heating: fascinate high temperature resistance furnace before steel pipe enters air cooling roller-way in the time that steel pipe stops to roller-way end, start low-temperature resistance stove opening and closing lid and furnace bottom tiling arrangement; Open low-temperature resistance stove bell, return low-temperature resistance stove, by material arm, steel pipe is lifted, steel pipe enters in low-temperature resistance stove, then closes low-temperature resistance stove bell, and steel pipe is carried out to heating and thermal insulation; After insulation finishes, start low-temperature resistance stove opening and closing lid and furnace bottom tiling arrangement; Open low-temperature resistance stove bell, rotate low-temperature resistance stove, steel pipe enters on material arm, and under material arm, general who has surrendered's steel pipe is put on the roller-way of blanking roller-way group;
(7) blanking: by blanking device, steel pipe is taken off, complete thermal treatment.
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| CN104212969A (en) * | 2014-09-18 | 2014-12-17 | 上海交通大学 | Steel pipe continuous quenching process control method based on numerical simulation |
| CN104294029A (en) * | 2014-11-06 | 2015-01-21 | 天津前云东方能源科技有限公司 | Heat treatment device for expansion pipe |
| CN105500510A (en) * | 2016-01-08 | 2016-04-20 | 陈东强 | Steam curing system for building elements |
| CN107032076A (en) * | 2017-04-29 | 2017-08-11 | 中原内配集团智能装备有限公司 | Burr cylinder jacket automatic assembly line |
| CN107385171A (en) * | 2017-09-21 | 2017-11-24 | 江苏南钢通恒特材科技有限公司 | Spray quenching device and rod iron production line |
| CN108611475A (en) * | 2018-06-27 | 2018-10-02 | 江苏龙城精锻有限公司 | A kind of equipment of the general segmentation integral heating quenching of shaped piece |
| CN108611467A (en) * | 2018-06-27 | 2018-10-02 | 江苏龙城精锻有限公司 | A kind of general segmentation integral heating quenching method of shaped piece |
| CN112449453A (en) * | 2020-12-08 | 2021-03-05 | 莱芜钢铁集团淄博锚链有限公司 | Intermediate frequency heating temperature closed-loop control system for bar stock |
| CN112588861A (en) * | 2020-11-23 | 2021-04-02 | 江西联创光电超导应用有限公司 | Bracket structure for feeding and discharging component and operation method |
| CN115961134A (en) * | 2022-12-28 | 2023-04-14 | 浙江华顺炉业有限公司 | Continuous type rod heat treatment production line |
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| CN105500510B (en) * | 2016-01-08 | 2017-10-27 | 郑州暖树实业有限公司 | Building element steam curing system |
| CN107032076A (en) * | 2017-04-29 | 2017-08-11 | 中原内配集团智能装备有限公司 | Burr cylinder jacket automatic assembly line |
| CN107385171A (en) * | 2017-09-21 | 2017-11-24 | 江苏南钢通恒特材科技有限公司 | Spray quenching device and rod iron production line |
| CN108611475A (en) * | 2018-06-27 | 2018-10-02 | 江苏龙城精锻有限公司 | A kind of equipment of the general segmentation integral heating quenching of shaped piece |
| CN108611467A (en) * | 2018-06-27 | 2018-10-02 | 江苏龙城精锻有限公司 | A kind of general segmentation integral heating quenching method of shaped piece |
| CN112588861A (en) * | 2020-11-23 | 2021-04-02 | 江西联创光电超导应用有限公司 | Bracket structure for feeding and discharging component and operation method |
| CN112449453A (en) * | 2020-12-08 | 2021-03-05 | 莱芜钢铁集团淄博锚链有限公司 | Intermediate frequency heating temperature closed-loop control system for bar stock |
| CN115961134A (en) * | 2022-12-28 | 2023-04-14 | 浙江华顺炉业有限公司 | Continuous type rod heat treatment production line |
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Effective date of registration: 20180718 Address after: 110027 7-5 Hun River fifteen economic and Technological Development Zone, Shenyang, Liaoning Patentee after: Shenyang science and Technology Co., Ltd. Ansett materials Address before: 110819 No. 3 lane, Heping Road, Heping District, Shenyang, Liaoning 11 Patentee before: Northeastern University |