CN102776336A - Quenching process method and device for achieving same - Google Patents
Quenching process method and device for achieving same Download PDFInfo
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- CN102776336A CN102776336A CN2012102828718A CN201210282871A CN102776336A CN 102776336 A CN102776336 A CN 102776336A CN 2012102828718 A CN2012102828718 A CN 2012102828718A CN 201210282871 A CN201210282871 A CN 201210282871A CN 102776336 A CN102776336 A CN 102776336A
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Abstract
The invention discloses a quenching process method which comprises the following step that (11) a workpiece to be processed is placed on a trolley; (12) the trolley conveys the workpiece to be processed into a three-surface heating sensor of an intermediate-frequency heater; and (13) the trolley drives the workpiece to be processed to sequentially pass through the three-surface heating sensor and a wind spraying cooling device according to preset process speed, the three-surface heating sensor heats a working top surface and two lateral surfaces of the workpiece to be processed according to preset heating power, and the wind spraying cooling device cools the working top surface and two lateral surfaces of the workpiece to be processed according to preset wind pressure parameters of compressed air to complete quenching operation. When the three-surface heating sensor works, heating sensing coils on the three surfaces can perform heating simultaneously, and heating areas of magnetic lines of force of the heating sensing coils share one third of heating area respectively. Therefore, the uniform temperature can be achieved through heat conduction in the continuous heating process, and the depth of a quenching layer of the working surface of the workpiece to be processed can meet technical requirements.
Description
Technical field
The present invention relates to the heat treatment technics field, particularly relate to a kind of quenching process.In addition, the invention still further relates to a kind of device that is used to realize said quenching process.
Background technology
The guard rail of railway switch in the prior art of speed per hour below 200 kilometers is: adopt the manufacturing of standard rail, the rail head working-surface of guard rail quenches, and iron mark TB/T 1779-93 " track switch rail spare quenching technology condition " is adopted in technical requirements.
Along with the development of transportation by railroad, guard rail there has been higher requirement to high speed, heavily loaded direction.The guard rail of the objective specially or high-speed switch of speed per hour more than 200 kilometers, design adopts the 33kg/m guard rail to use the U-steel manufacturing, and the thermal treatment of U-steel rail head workplace, technical requirements reach the regulation of iron mark TB/T3110-2005 " guard rail is used U-steel ".Compare with the guard rail below 200 kilometers, the depth of hardening that its heat treatment technics requires is also different.It is 8mm that prior art requires depth of hardening, and hardness is 32HRC ~ 40HRC.It is 24mm that TB/T3110-2005 " guard rail is used U-steel " standard then requires depth of hardening, and hardness is 34HRC ~ 43HRC.
At present existingly be: the heat induced coil is set at the tread face to rail head of rail induced surface hardening technology; Make its magneticline of force direction be parallel to the rail head of rail cross section; Its heat penetration is about 10mm; According to the induced surface hardening principle, adopt the electric current of intermediate frequency that surpasses 1000Hz, its induction heating degree of depth can not surpass 25mm.So the existing depth of hardening that can't satisfy " guard rail is used U-steel " standard code to rail head of rail induced surface hardening technology is the industrial production requirement of 24mm.
In addition, need heat treated flange class workpiece with above-mentioned guard rail with the similar flange of U-steel position, or other structures there is the workpiece of similar heat treatment requirements also to have the problems referred to above.
In view of this, how working out a kind of quenching process, can make the depth of hardening of workpiece to be processed workplace satisfy technical requirements, is the present technical issues that need to address of those skilled in the art.
Summary of the invention
The purpose of this invention is to provide a kind of quenching process, this quenching process can make the depth of hardening of workpiece to be processed workplace satisfy the industrial production requirement.Another object of the present invention provides a kind of device of realizing above-mentioned quenching process.
For solving the problems of the technologies described above, the present invention provides a kind of quenching process, comprises the steps:
11) workpiece to be processed is arranged on the chassis;
12) workpiece to be processed is sent in three heating inductors of intermediate frequency heater through chassis;
13) chassis drives workpiece to be processed according to preset process speed and navigates within three heating inductors and spray air-cooling device in regular turn; Three heating inductors heat the top work surface and the two sides of workpiece to be processed according to preset heating power; The spray air-cooling device cools off the top work surface and the two sides of workpiece to be processed according to preset pressurized air blast parameter, accomplishes the quenching operation.
Preferably, further may further comprise the steps in the step 12):
121) gap of three heating inductors of adjusting and workpiece to be processed end face; Regulate the distance between spray air-cooling device and three heating inductors and spray the gap between air-cooling device and the workpiece to be processed end face.
Preferably, the interstice coverage of said three heating inductors and said workpiece to be processed end face is 3mm ~ 11mm.
Preferably, the interstice coverage of said spray air-cooling device and said workpiece to be processed end face is 20mm ~ 200mm.
Preferably, an end of workpiece to be processed described in the step 11) clamps with the termination gripping unit, and said termination gripping unit is fixed on the chassis.
Preferably, in the step 13), preset process speed is 50mm/min ~ 400mm/min; Preset heating power is 50kW ~ 140kW; Preset pressurized air blast is 0.05MPa ~ 0.4MPa.
The present invention also provides a kind of device of realizing above-mentioned quenching process, comprising:
Intermediate frequency heater is equipped with three heating inductors, is used to heat the top work surface and the two sides of workpiece to be processed;
The spray air-cooling device is connected with said intermediate frequency heater, is used to cool off the top work surface and the two sides of heated workpiece to be processed;
Chassis is used to drive workpiece to be processed and navigates within said intermediate frequency heater, said spray air-cooling device successively.
Preferably, said device also comprises slack adjuster, is connected with said intermediate frequency heater, is used to regulate the gap between three heating inductors and the said workpiece to be processed end face.
Preferably, said device further comprises the termination gripping unit that is fixed on the said chassis, and said termination gripping unit clamps an end of said workpiece to be processed.
Preferably, said three heating inductors comprise end face ruhmkorff coil and the side ruhmkorff coil that is arranged symmetrically in both sides; The magneticline of force direction that said end face ruhmkorff coil and said side ruhmkorff coil produce is parallel to the xsect of workpiece to be processed, and the magneticline of force of the magneticline of force direction of said end face ruhmkorff coil and said side ruhmkorff coil is in the opposite direction.
Preferably, said spray air-cooling device comprises the more piece casing that joins successively, and said casing comprises upper box and the lower box that makes up with said upper box; The last end face of said upper box is provided with the pressure air joint, and the bottom surface of said lower box is provided with the high speed air blast beak.
Preferably, said slack adjuster comprises installation frame and is installed in the guide deflection sheave on the said installation frame that said installation frame is connected with said intermediate frequency heater; During work, the workplace position of said workpiece to be processed is pressed in the groove of said guide deflection sheave.
Above-mentioned background is technological relatively; Quenching process provided by the present invention is arranged on workpiece to be processed on the chassis earlier; Workpiece to be processed is sent in three heating inductors of intermediate frequency heater through chassis; Chassis drives workpiece to be processed according to preset process speed and navigates within three heating inductors and spray air-cooling device in regular turn then; Three heating inductors carry out heating and cooling to the workplace of workpiece to be processed according to preset heating power, preset pressurized air blast parameter respectively in regular turn with the spray air-cooling device, accomplish the quenching operation.Because the heating inductor of intermediate frequency heater provided by the present invention is three heating inductors; Not only comprise end face heat induced coil; The side heat ruhmkorff coil that also comprises symmetric arrangement, during heating, three heat induced coils heat simultaneously; Its magneticline of force heating region is shared 1/3rd heating-surface area separately; It is even in continuous heat-processed, to reach temperature through thermal conduction, and net effect can make the heat penetration of workpiece to be processed workplace reach technical requirements, can satisfy technical requirements equally through depth of hardening after the spray air cooling of spray air-cooling device.
Description of drawings
Fig. 1 is used for the schema of guard rail with U-steel for quenching process provided by the present invention;
Fig. 2 is the structural representation of quenching device provided by the present invention;
Fig. 3 is the front view of quenching device shown in Fig. 2;
Fig. 4 is the right view of quenching device shown in Fig. 3;
Fig. 5 is the structural representation of three heating inductors of quenching device shown in Fig. 2;
Fig. 6 is the magneticline of force heating principle schematic of three heating inductors of intermediate frequency heater provided by the present invention;
Fig. 7 is that the circuit of ruhmkorff coil of three heating inductors of intermediate frequency heater provided by the present invention connects synoptic diagram;
Fig. 8 is the schematic layout pattern of high speed air blast beak of the spray air-cooling device of quenching device shown in Fig. 2;
Fig. 9 is the front view of a kind of embodiment of termination gripping unit provided by the present invention;
Figure 10 is the vertical view of termination gripping unit shown in Fig. 9;
Figure 11 is the compact heap of termination shown in Figure 9 gripping unit and the guard rail synoptic diagram that compresses with U-steel.
Embodiment
Core of the present invention provides a kind of quenching process, and this quenching process can make the depth of hardening of workpiece to be processed workplace satisfy the industrial production requirement.Another core of the present invention provides a kind of device of realizing above-mentioned quenching process.
Be without loss of generality, use U-steel to combine Figure of description to specify this embodiment with guard rail below as example.
Please refer to Fig. 1, Fig. 1 is used for the schema of guard rail with U-steel for quenching process provided by the present invention.
In a kind of embodiment, the step of quenching process provided by the present invention is following:
Step S11: guard rail is arranged on the chassis with U-steel.
Because guard rail is asymmetric with the section form of U-steel, required heat treated rail head workplace also not on its position of centre of gravity line, may be toppled over to its side in the heating quenching process.Toppling over U-steel for fear of guard rail in the heating quenching process influences its thermal treatment, so need guard rail be used the U-steel relative fixed.
Particularly, can guard rail be clamped with U-steel, again the termination gripping unit is fixed on the chassis, can certainly guard rail be fixed with U-steel, topple over, can not influence thermal treatment and get final product as long as can prevent it through other modes through the termination gripping unit.
Step S 12: said guard rail is sent in three heating inductors of intermediate frequency heater with U-steel.
Particularly, three heating inductors comprise the two sides ruhmkorff coil of end face ruhmkorff coil and symmetric arrangement; When heating, can heat with the tread face and the two sides of U-steel guard rail simultaneously.
Step S13: chassis drives guard rail according to preset process speed and navigates within three heating inductors and spray air-cooling device in regular turn with U-steel; Three heating inductors heat the rail head workplace of guard rail with U-steel according to preset heating power; The spray air-cooling device cools off the rail head workplace of guard rail with U-steel according to preset pressurized air blast parameter, accomplishes the quenching operation.
Particularly; Chassis drives guard rail with U-steel with predetermined process speed according to guard rail and moves with U-steel; Heated by it through three heating inductors earlier; Sprayed air cooling through the spray air-cooling device again, i.e. the travel direction of guard rail use U-steel is to the spray air-cooling device from three heating inductors.
Wherein, process speed is meant the translational speed of guard rail with U-steel, owing to guard rail is arranged on the chassis with U-steel, so this process speed is the translational speed of chassis; Heating power is meant the heating power of intermediate frequency heater, influences rate of heating and heat penetration; Pressurized air blast parameter is the pressurized air parameter of spray air-cooling device, influences speed of cooling.
Preferably, process speed is 50mm/min ~ 400mm/min, and the heating power that intermediate frequency heater adopts is 50kW ~ 140kW, and the pressurized air blast is 0.05MPa ~ 0.4MPa.In the course of the work, can set the occurrence of above-mentioned parameter according to the actual process demand.
Because the heating inductor of intermediate frequency heater is three heating inductors; Promptly comprise end face heater coil and two sides heater coil; And the magneticline of force direction of three electric current that ruhmkorff coil applied generations all is parallel to guard rail with U-steel rail head cross section, can realize that guard rail is with U-steel rail head end face and lateral heating simultaneously; After the heating when guard rail during with the steel body generation complete austenitizing phase transformation of U-steel rail head workplace zone; Adopt spray air-cooling device cooling guard rail with U-steel rail head workplace; Make its workplace the transformation of austenite to the nodular troostite tissue take place in the perlitic transformation zone; Therefore, can realize that guard rail reaches more than the 25mm with U-steel rail head workplace thermal treatment heat penetration, reach more than the 24mm through depth of hardening after the spray air cooling.
In order to guarantee heat penetration further, further comprising the steps of in the step 12:
Step 121: regulate three heating inductors and guard rail gap with the grooved rail surface; Regulate the distance between spray air-cooling device and three heating inductors and spray air-cooling device and guard rail with the gap between the grooved rail surface.
Particularly, intermediate frequency heater is provided with slack adjuster, can be used to regulate three heating inductors and guard rail with the gap between the grooved rail surface; The spray air-cooling device is connected with intermediate frequency heater is removable, both can regulate the distance between spray air-cooling device and the intermediate frequency heater, also can regulate spray air-cooling device and guard rail with the gap between the grooved rail surface.
Said three heating inductors and guard rail are preferably 3mm ~ 11mm with the gap of grooved rail surface; Said spray air-cooling device and guard rail are preferably 20mm ~ 200mm with the gap of grooved rail surface.In the course of the work, can three heating inductors, spray air-cooling device and the guard rail occurrence with the gap of grooved rail surface be set according to the actual process demand.
The present invention also provides a kind of device of realizing above-mentioned quenching process, please refer to Fig. 2 to Fig. 8; Fig. 2 is the structural representation of quenching device provided by the present invention; Fig. 3 is the front view of quenching device shown in Fig. 2; Fig. 4 is the right view of quenching device shown in Fig. 3; Fig. 5 is the structural representation of three heating inductors of quenching device shown in Fig. 2; Fig. 6 is the magneticline of force heating principle schematic of three heating inductors of intermediate frequency heater provided by the present invention; Fig. 7 is that the circuit of ruhmkorff coil of three heating inductors of intermediate frequency heater provided by the present invention connects synoptic diagram; Fig. 8 is the schematic layout pattern of high speed air blast beak of the spray air-cooling device of quenching device shown in Fig. 2.
Said device comprises intermediate frequency heater 2, and the below of intermediate frequency heater 2 is provided with three heating inductors 21; Three heating inductors 21 comprise the side ruhmkorff coil 212 of end face ruhmkorff coil 211 and two symmetric arrangement; End face ruhmkorff coil 211 is connected on circuit is connected with two sides ruhmkorff coil 212, and particularly, ruhmkorff coil is connected through the electroplax 24 that connects of conducting plates 22, conducting block 23 and intermediate frequency heater 2; Side ruhmkorff coil 212 also is connected with warter connection 25 respectively with conducting block 23, and wherein water flowing can form the circulation cooling conductor, is used to cool off ruhmkorff coil.
With reference to figure 6; End face ruhmkorff coil 211 is all parallel with the rail head cross section of U-steel 1 with guard rail with side magneticline of force L2 with the end face magneticline of force L1 that the sense of current produced that two sides ruhmkorff coil 212 applies; The heating region of magneticline of force is the rail head workplace of guard rail with U-steel 1, and promptly guard rail is with the tread face and the two sides of U-steel 1.Further; In order to prevent that magneticline of force from disperseing, can end face magnetizer 213 and side magnetizer 214 be set respectively in the periphery of end face ruhmkorff coil 211 and two sides ruhmkorff coil 212, in order to the density and the direction of control magnetic flux; Avoid magneticline of force to disperse, increase the stream effect of driving.
Because there is intersecting area in the side magneticline of force L2 that end face magneticline of force L1 that end face ruhmkorff coil 211 produces and two sides ruhmkorff coil 212 produce; Be guard rail with two fillet positions about top, U-steel cross section; So for the offseting phenomenon that prevents to differ and cause owing to the magneticline of force direction that intersects; When being provided with, require the in the opposite direction of side magneticline of force L2 that end face magneticline of force L1 that end face ruhmkorff coil 211 produces and two sides ruhmkorff coil 212 produce, so in end face magneticline of force L1 and the crossing zone of side magneticline of force L2; The direction of magneticline of force is consistent, can guarantee the heats at two fillet positions about guard rail is with top, U-steel cross section.End face magneticline of force L1 shown in Fig. 6 is that counterclockwise side magneticline of force L2 is a CW.Certainly when specifically being provided with, also can make end face magneticline of force L1 is CW, and side magneticline of force L2 is counterclockwise, as long as can guarantee heats.
With reference to figure 7; Two sides ruhmkorff coil 212 connects the two poles of the earth of electroplax 24 respectively; Because end face ruhmkorff coil 211 is placed with two sides ruhmkorff coil 212 side by side, after the series connection, the current opposite in direction of the sense of current of two sides ruhmkorff coil 212 and end face ruhmkorff coil 211; Shown in arrow among Fig. 7, so two sides ruhmkorff coil 212 is also opposite with the magneticline of force direction that end face ruhmkorff coil 211 produces.
Further, in order to guarantee guard rail with fillet temperature equilibrium on the rail head cross section of U-steel 1, two sides ruhmkorff coil 212 can be set to horizontal S shape.
Further, can be in two sides the inboard of ruhmkorff coil 212 and end face ruhmkorff coil 211 smear high-temperature plastic, strengthen the wear resistance of three heating inductors 21, prolong its work-ing life.
The left side of intermediate frequency heater 2 is connected with spray air-cooling device 3 (being shown among Fig. 2); 26 removable connections of web plate of spray air-cooling device 3 and intermediate frequency heater 2, can move left and right change the distance between itself and three heating inductors 21 thereby spray air-cooling device 3; Can regulate the height that sprays air-cooling device 3 through first adjusting screw(rod) 35 between spray air-cooling device 3 and the web plate 26, thereby adjusting spray air-cooling device 3 and guard rail are with the gap between the tread face of U-steel 1.Spray air-cooling device 3 comprises the more piece casing that links to each other successively, can pass through sealring and holding bolt mount between the said casing.
Process speed and required speed of cooling that the joint number of said casing is quenched according to reality are confirmed, are preferably two joint casings or three joint casings.
Said casing comprises upper box 31 and lower box 32, also can pass through sealring and fitting nut mount between upper box 31 and the lower box 32.
The last end face of upper box 31 evenly is furnished with a plurality of pressurized air air intake joints 33, and pressurized air air intake joint 33 is connected with compressed air line.The bottom surface of lower box 32 is furnished with high speed air blast beak 34; Particularly, can use sealing member and fitting nut mount between the box plate of high speed air blast beak 34 and lower box 32.It is to be noted; Because high speed air blast beak 34 is used to spray the heated track switch of air cooling rail spare; The temperature of heated track switch rail spare is than higher; So the sealing member between the box plate of high speed air blast beak 34 and said lower box 32 preferably adopts the sealing member of heatproof, prevent that the sealing member that causes because of track switch rail spare temperature height from damaging, and then influence spray air cooling effect.
High speed air blast beak 34 is preferably streamlined high speed air blast beak, and streamlined high speed air blast beak has that the pressurized air consumption is little, cooling power is strong and cool off advantages such as even.
High speed air blast beak 34 at the bottom surface of lower box 32 with the mode of the chessboard type structure layout (being shown among Fig. 8) that misplaces; The chessboard type structure dislocation is arranged and can be shortened the spacing between the high speed air blast beak 34, guard rail is cooled off with the workplace of U-steel uniformly and effectively.Certainly the decoration form of high speed air blast beak 34 is not limited thereto, and also can adopt other modes, as long as can guarantee technological effect.
The below of intermediate frequency heater 2 also is provided with slack adjuster 4, and slack adjuster 4 is positioned at the two ends of three heating inductors 21; Slack adjuster 4 comprises guide deflection sheave 41, and guide deflection sheave 41 is installed on the installation frame 42, and installation frame 42 is connected on the intermediate frequency heater 2, also is provided with second adjusting screw(rod) 43 between installation frame 42 and the intermediate frequency heater 2.During work; Guard rail is pressed on the groove interior (being shown among Fig. 4) of guide deflection sheave 41 with the rail head of U-steel 1; Nut through regulating on first adjusting screw(rod) 43 can be regulated the height of guide deflection sheave 41, thereby regulates three induction heaters 21 and guard rail with the gap between the U-steel 1 tread face.In addition, owing to the rail head of guard rail with U-steel 1 is pressed in the groove of guide deflection sheave 41,, can avoid three heating inductors, 21 relative guard rails deflection to occur with U-steel 1 tread face medullary ray so slack adjuster 4 also has the effect of guiding simultaneously.
During work; Guard rail is arranged on the chassis with U-steel 1; Send into guard rail in three induction heaters 21 that are connected with intermediate frequency heater 2 with U-steel 1 through chassis; The end face ruhmkorff coil 211 of three induction heaters 21 heats the rail head workplace of guard rail with U-steel 1 with two sides ruhmkorff coil 212 simultaneously, and heating power is 50kW ~ 140kW, and the magneticline of force heating region that each ruhmkorff coil produces is born 1/3rd of heating-surface area; It is even in continuous heat-processed, to reach temperature through thermal conduction; Guard rail is reached more than the 25mm with the workplace heat penetration of U-steel, at guard rail during with the steel body generation complete austenitizing phase transformation in U-steel 1 rail head workplace zone, adopt spray air-cooling device 3 continuously the cooling guard rails with the rail head workplaces of U-steel; The pressurized air blast of spray air-cooling device 3 is 0.05MPa ~ 0.4MPa; Make speed of cooling can reach 1.0 ° of C/s ~ 7 ° C/s, thereby make guard rail in the perlitic transformation zone transformation of austenite to the nodular troostite tissue take place, other structural transformations such as bainite and martensite do not take place with the rail head workplace of U-steel 1; When using temperature after the U-steel 1 rail head workplace spray air cooling to be 200 ° of C ~ 550 ° C, accomplishes by guard rail the heat treatment process of guard rail with U-steel 1 rail head workplace.
Because it is cold that guard rail is with U-steel 1 that heating is earlier sprayed again, thus in the working process guard rail use the travel direction of U-steel 1 be from three heating inductors 21 to spraying air-cooling device 3, be benchmark with Fig. 3, promptly its travel direction is for from right to left.Particularly, realize guard rail with the moving of U-steel 1 through moving of chassis, the speed that chassis moves is 50mm/min ~ 400mm/min.
It is pointed out that when real work, can confirm the occurrence of above-mentioned each parameter according to processing requirement.
Table 1 has provided under different technical parameters, utilizes quenching process provided by the present invention and device that guard rail is heat-treated the result who obtains with U-steel; Table 2 has provided the contrast situation of certain embodiment result and standard code.
From table 1 and table 2, can find out; Use quenching process provided by the present invention and the device guard rail is heat-treated with U-steel; Can reach the regulation of iron mark TB/T3110-2005 " guard rail is used U-steel "; Guard rail is reached more than the 24mm with the depth of hardening of the rail head workplace of U-steel, satisfy the needs that Line for Passenger Transportation or high-speed switch are made.
Table 1
Table 2
Because guard rail is asymmetric with the section form of U-steel 1; And the rail head workplace of heating is not also on its position of centre of gravity line; In order to prevent that guard rail can be toppled over to its side with U-steel 1 in the heating quenching process, so need be before processing with guard rail with U-steel 1 relative fixed.Particularly, can guard rail be clamped with U-steel 1 through termination gripping unit 5.
Please refer to Fig. 9, Figure 10 and Figure 11; Fig. 9 is the front view of a kind of embodiment of termination gripping unit provided by the present invention; Figure 10 is the vertical view of termination gripping unit shown in Fig. 9; Figure 11 is the compact heap of termination shown in Figure 9 gripping unit and the guard rail synoptic diagram that compresses with U-steel.
Certainly, the concrete structure of termination gripping unit 5 also can be other forms, as long as can clamping work pieces, prevents that workpiece is toppled in heat treatment process to get final product.
It is pointed out that the nouns of locality such as upper and lower a, left side that preceding text are related and the right side, is to be arranged in figure and component position each other defines with component among Fig. 2 to Figure 11, just in order to explain the clear and convenient of technical scheme.Should be appreciated that the noun of locality that this paper adopts should not limit the scope that present specification is asked for protection.
Here also need to prove; It is similar with the heat treatment requirements of U-steel that quenching process provided by the present invention and device also can be used for having the heat treatment requirements and the above-mentioned guard rail at workpiece and flange position of flanged structure; Can certainly be used for the workpiece that some has other structures of similar heat treatment requirements; When concrete the application, can carry out suitable improvement rationally to said apparatus according to the structure of workpiece to be processed.
More than quenching process provided by the present invention and device have been carried out detailed introduction.Used concrete example among this paper principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (12)
1. a quenching process is characterized in that, comprises the steps:
11) workpiece to be processed is arranged on the chassis;
12) workpiece to be processed is sent in three heating inductors of intermediate frequency heater through chassis;
13) chassis drives workpiece to be processed according to preset process speed and navigates within three heating inductors and spray air-cooling device in regular turn; Three heating inductors heat the top work surface and the two sides of workpiece to be processed according to preset heating power; The spray air-cooling device cools off the top work surface and the two sides of workpiece to be processed according to preset pressurized air blast parameter, accomplishes the quenching operation.
2. quenching process as claimed in claim 1 is characterized in that, further may further comprise the steps in the step 12):
121) gap of three heating inductors of adjusting and workpiece to be processed end face; Regulate the distance between spray air-cooling device and three heating inductors and spray the gap between air-cooling device and the workpiece to be processed end face.
3. quenching process as claimed in claim 2 is characterized in that, the interstice coverage of said three heating inductors and said workpiece to be processed end face is 3mm ~ 11mm.
4. quenching process as claimed in claim 2 is characterized in that, the interstice coverage of said spray air-cooling device and said workpiece to be processed end face is 20mm ~ 200mm.
5. according to claim 1 or claim 2 quenching process is characterized in that, an end of workpiece to be processed described in the step 11) clamps with the termination gripping unit, and said termination gripping unit is fixed on the chassis.
6. according to claim 1 or claim 2 quenching process is characterized in that, in the step 13), preset process speed is 50mm/min ~ 400mm/min; Preset heating power is 50kW ~ 140kW; Preset pressurized air blast is 0.05MPa ~ 0.4MPa.
7. a device that is used to realize quenching process described in the claim 1 is characterized in that, comprising:
Intermediate frequency heater is equipped with three heating inductors, is used to heat the top work surface and the two sides of workpiece to be processed;
The spray air-cooling device is connected with said intermediate frequency heater, is used to cool off the top work surface and the two sides of heated workpiece to be processed;
Chassis is used to drive workpiece to be processed and navigates within said intermediate frequency heater, said spray air-cooling device successively.
8. device as claimed in claim 7 is characterized in that, also comprises slack adjuster, is connected with said intermediate frequency heater, is used to regulate the gap between three heating inductors and the said workpiece to be processed end face.
9. like claim 7 or 8 described devices, it is characterized in that further comprise the termination gripping unit that is fixed on the said chassis, said termination gripping unit clamps an end of said workpiece to be processed.
10. like claim 7 or 8 described devices, it is characterized in that said three heating inductors comprise end face ruhmkorff coil and the side ruhmkorff coil that is arranged symmetrically in both sides; The magneticline of force direction that said end face ruhmkorff coil and said side ruhmkorff coil produce is parallel to the xsect of workpiece to be processed, and the magneticline of force of the magneticline of force direction of said end face ruhmkorff coil and said side ruhmkorff coil is in the opposite direction.
11., it is characterized in that said spray air-cooling device comprises the more piece casing that joins successively like claim 7 or 8 described devices, said casing comprises upper box and the lower box that makes up with said upper box; The last end face of said upper box is provided with the pressure air joint, and the bottom surface of said lower box is provided with the high speed air blast beak.
12. device as claimed in claim 8 is characterized in that, said slack adjuster comprises installation frame and is installed in the guide deflection sheave on the said installation frame that said installation frame is connected with said intermediate frequency heater; During work, the workplace position of said workpiece to be processed is pressed in the groove of said guide deflection sheave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210282871.8A CN102776336B (en) | 2012-08-09 | 2012-08-09 | Quenching process method and device for achieving same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210282871.8A CN102776336B (en) | 2012-08-09 | 2012-08-09 | Quenching process method and device for achieving same |
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| Publication Number | Publication Date |
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| CN102776336A true CN102776336A (en) | 2012-11-14 |
| CN102776336B CN102776336B (en) | 2014-10-08 |
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| CN201210282871.8A Active CN102776336B (en) | 2012-08-09 | 2012-08-09 | Quenching process method and device for achieving same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107541596A (en) * | 2017-08-28 | 2018-01-05 | 芜湖中铁科吉富轨道有限公司 | A kind of burning optimization on line technique of U75V rail |
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| CN101016580A (en) * | 2007-02-08 | 2007-08-15 | 武汉钢铁股份有限责任公司大型轧钢厂 | Heat treatment method for high strength heavy type steel rail head |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107541596A (en) * | 2017-08-28 | 2018-01-05 | 芜湖中铁科吉富轨道有限公司 | A kind of burning optimization on line technique of U75V rail |
| CN107541596B (en) * | 2017-08-28 | 2018-12-25 | 芜湖中铁科吉富轨道有限公司 | A kind of burning optimization on line technique of U75V rail |
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| CN102776336B (en) | 2014-10-08 |
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Effective date of registration: 20151202 Address after: 411100 Hunan city of Xiangtan province Yisuhe Economic Development Zone day road (Xiangtan Tianyi demonstration zone) Patentee after: HUNAN MINRUI TECHNOLOGY CO., LTD. Address before: 412000 Hunan Province, Zhuzhou Shifeng District Tian Xin East Gate Patentee before: Zhuzhou Minrui Vehicle Fitting Co., Ltd. |