CN203728879U - Penetration induction heating hardening device for 921A flat-bulb steel - Google Patents
Penetration induction heating hardening device for 921A flat-bulb steel Download PDFInfo
- Publication number
- CN203728879U CN203728879U CN201320889704.XU CN201320889704U CN203728879U CN 203728879 U CN203728879 U CN 203728879U CN 201320889704 U CN201320889704 U CN 201320889704U CN 203728879 U CN203728879 U CN 203728879U
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- China
- Prior art keywords
- bulb steel
- water
- coil
- flat
- waterworks
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- Expired - Fee Related
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 38
- 239000010959 steel Substances 0.000 title claims abstract description 38
- 238000010438 heat treatment Methods 0.000 title claims abstract description 24
- 230000006698 induction Effects 0.000 title claims abstract description 14
- 230000035515 penetration Effects 0.000 title claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000007667 floating Methods 0.000 claims abstract description 15
- 238000005507 spraying Methods 0.000 claims abstract description 6
- 238000003860 storage Methods 0.000 claims abstract description 5
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 5
- 238000010791 quenching Methods 0.000 claims description 31
- 238000009434 installation Methods 0.000 claims description 12
- 239000000523 sample Substances 0.000 claims description 4
- 239000002826 coolant Substances 0.000 claims description 3
- 239000008234 soft water Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 abstract description 8
- 238000010923 batch production Methods 0.000 abstract description 3
- 238000005496 tempering Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000000498 cooling water Substances 0.000 abstract description 2
- 238000010992 reflux Methods 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 abstract 1
- 239000003638 chemical reducing agent Substances 0.000 abstract 1
- 230000000171 quenching effect Effects 0.000 description 17
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Heat Treatment Of Articles (AREA)
Abstract
The utility model relates to the field of hardening and tempering and in particular relates to a penetration induction heating hardening device for 921A flat-bulb steel. The device comprises a floating device and a conveying roller path. The device is characterized in that clamping and conveying devices are arranged at the upstream and downstream parts of the floating device respectively and comprise a pair of upper and lower clamping and conveying rollers and a pair of left and right blocking rollers; the lower clamping and conveying roller is connected with a speed reducer and a variable-frequency motor in sequence; the flat-bulb steel is provided with a preheating coil and a heating coil on a channel behind the floating device; the two heating coils are in double-subloop structures; an air spraying device is arranged between the water spraying device and the heating coil; the water spraying device forms a cooling water closed loop together with a reflux groove, a hardening water storage groove and a hardening water cooling device. Compared with the prior art, the device has the beneficial effects that the mechanical property uniformity of single flat-bulb steel is improved, the continuity of batch production is ensured, the deformation quantity after hardening of the flat-bulb steel and the subsequent shape-righting cost are reduced, and the high-quality requirements of military product standards are met.
Description
Technical field
The utility model relates to heat treatment quenching and tempering quenching technology field, relates in particular to a kind of 921A flat bulb steel penetration induction hardening equipment.
Background technology
Flat bulb steel is a kind of medium section that is mainly used in shipbuilding and bridging field, its out-of-shape, and a side is thicker muscles and bones or keel, opposite side is to connect with postorder the sheet material that sheet metal thickness is identical.Because the shape of Flat-bulb Steel for Ship Use is special, there be limited evidence currently of is heat-treated quenching, is mostly rolling state delivery.Induction heating is mainly used in the hard surfacing of Industrial Metal part, its ultimate principle is to produce certain induced current by ruhmkorff coil at workpiece surface, make workpiece surface be heated to rapidly technological temperature, then cooling to reach the object of metallic surface quenching fast, because single flat bulb steel is longer, conventionally more than 8 meters, adopt the method for integral heating quenching in conventional stove, exist single mechanical property homogeneity bad, in batches quench quality unstable, be out of shape the defects such as large.
Therefore in the time that the war products 921A flat bulb steel that high quality is required carries out modified quench treatment, in order to obtain the comprehensive mechanical performance of stable and uniform, need to adopt the quenching mode of induction heating, but minority producer adopts the heating means of single supply, single ruhmkorff coil, single power supply frequency at present, be difficult to ensure that whole flat bulb steel section temperature is uniform and stable, can not adapt to the production of many kinds, and production efficiency is extremely low simultaneously.
Summary of the invention
The purpose of this utility model is to provide a kind of 921A flat bulb steel penetration induction hardening equipment, overcome flat bulb steel integral heating quenching homogeneity bad, in batches quench quality unstable, be out of shape large shortcoming, realize batch production, reach the high quality requirement of war products standard.
For achieving the above object, the utility model is achieved through the following technical solutions:
A kind of 921A flat bulb steel penetration induction hardening equipment, comprise floating installation and rollgang, upstream and downstream at floating installation arranges respectively clamping and conveying device, described clamping and conveying device comprises upper and lower a pair of pinch roll, pair of right and left gear roller, on pinch roll, be coated with and hang with the rubber layer of heat-resistant antifriction, under pinch roll connect successively step-down gear and variable-frequency motor; On the passage of flat bulb steel after floating installation, be provided with successively pre-hot-wire coil and heater coil, two groups of coils are Shuangzi coil structures, and between two groups of coils, distance H is 200～300mm, and the spacing h of two subloops in coil is 25～50mm; Be provided with temperature test probe in the downstream of heater coil; Waterworks is located at the downstream of heater coil, and it is the structure of rectangle and many rounds that waterworks adopts cross section, and water jet is towards a side opening, and water spraying direction tilts 30～45 ° towards flat bulb steel travel direction, and waterworks is supplied water by five suction culverts; Between waterworks and heater coil, be provided with air-jet device, described waterworks and backflow groove, quench water storage tanks and quench water refrigerating unit form the closed loop of water coolant.
Described pre-hot-wire coil is connected with pre-thermoelectric generator through soft line, and heater coil is connected with heating power supply through soft line, and pre-thermoelectric generator is all connected by water lines with power supply refrigerating unit with heating power supply, and power supply heat-eliminating medium is industrial soft water.
Compared with prior art, the beneficial effects of the utility model are: from the structure of the selection of induction coil configuration and supply frequency, twice type of heating, pinch roll, stablize the several respects such as cooling and start with, improve the homogeneity of single flat bulb steel mechanical property, ensure the continuous of batch production, reduce deflection and follow-up orthopedic cost after flat bulb steel quenches, reached the high quality requirement of war products standards.
Brief description of the drawings
Fig. 1 is the utility model production line two dimensional structure schematic diagram;
Fig. 2 is the utility model pinch roll example structure schematic diagram;
Fig. 3 is the vertical view of Fig. 2;
Fig. 4 is the utility model waterworks example structure schematic diagram.
In figure: the pre-thermoelectric generator 13-of the pre-hot-wire coil 5-of 1-floating installation 2-clamping and conveying device 3-flat bulb steel 4-heater coil 6-temperature test probe 7-waterworks 8-air-jet device 9-backflow groove 10-quench water storage tanks 11-quench water refrigerating unit 12-heating power supply 14-power supply refrigerating unit 15-strainer 16-rollgang 17-pinch roll 18-gear roller 19-step-down gear 20-variable-frequency motor 21-water inlet pipe 22-water jet
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further:
See Fig. 1, it is a kind of 921A flat bulb steel of the utility model penetration induction quenching production line two dimensional structure schematic diagram, select, the structure of pinch roll, stablize cooling several respects and start with from the frequency of induction coil configuration and power supply, improve homogeneity and the efficiency of heating, ensure continuous stably manufactured, its concrete operation step is as follows:
1) at the upstream and downstream of floating installation 1, clamping and conveying device 2 is set respectively, flat bulb steel 3 is sent into by the clamping and conveying device 2 of floating installation 1 upstream, see Fig. 2, Fig. 3, clamping and conveying device 2 comprises upper and lower a pair of pinch roll 17, pair of right and left gear roller 18, on pinch roll, be coated with the rubber layer that hangs with heat-resistant antifriction, to increase the frictional force of pinch roll and flat bulb steel, avoid the generation of the phenomenons such as flat bulb steel skids in moving process, ensure the uniform and stable movement of flat bulb steel;
Under pinch roll 17 connect successively step-down gear 19 and variable-frequency motor 20, flat bulb steel is passed through at the uniform velocity continuously with the speed of 200～1000mm/ minute in floating installation; The travelling speed of variable-frequency motor control flat bulb steel.
Floating installation 1 can ensure that the relative distance of flat bulb steel and ruhmkorff coil remains constant in quenching heat-processed, has realized the uniform and stable of quenching temperature.
2) flat bulb steel 3 passes through successively pre-hot-wire coil 4 and heater coil 5 after floating installation 1, two groups of coils are Shuangzi coil structures, between two groups of coils, distance H is 200～300mm, the spacing h of two subloops in coil is 25～50mm, the heat that the makes preheating centripetal portion diffusion of trying one's best before heating, to ensure that flat bulb steel is passing through after heater coil, whole cross section temperature uniformity;
For adapting to the various different models of flat bulb steel, the frequency of pre-hot-wire coil 4 adopts the double frequency output of 5KHz and 10KHz, the frequency of heater coil adopts the double frequency output of 10KHz and 20KHz, according to circumstances combination selection, to realize best heats, flat bulb steel 3 carries out temperature detection by temperature test probe 6 after by heater coil, thermometric numerical value passes to control center, after control center compares the value of numerical value and technique initialization, automatically regulate the output rating of ruhmkorff coil power supply, accurately control actual quenching temperature and meet technique initialization requirement;
Pre-hot-wire coil 4 is connected with pre-thermoelectric generator 12 through soft line, heater coil 5 is connected with heating power supply 13 through soft line, thereby the follow-up action that makes ruhmkorff coil is achieved and brings into play, pre-thermoelectric generator 12 is all connected with power supply refrigerating unit 14 with heating power supply 13, and independently cooling system ensures that power supply can continous-stable work.
The interior use industrial soft water of power supply refrigerating unit 14, avoids water fouling in power supply and cooling water channel, affects cooling performance, ensures the normal steady operation of power supply, extends the work-ing life of power supply.
It is IGBT induction heating power that pre-thermoelectric generator 12 and heating power supply 13 all adopt more stable, energy-conservation, advanced; possesses the defencive function of hydraulic pressure, water temperature, electric leakage etc.; avoid the power supply damage causing owing to not possessing the condition of the normal work of power supply, thereby ensure continuous and stable production.
3) waterworks 7 is located at the downstream of heater coil 5, see Fig. 4, it is the structure of rectangle and many rounds that waterworks adopts cross section, water jet 22 is towards a side opening, water spraying direction tilts 30～45 ° towards flat bulb steel travel direction, supplied water by five water inlet pipes 21, increase cooling power and improve cooling performance; Between waterworks 7 and heater coil 5, be provided with air-jet device 8, air-jet device 8 heater coil blowing dorsad, blast 0.3～0.5MPa, high-pressure blast stops quench cooled aqueous reflux to return quenching heating region, reduces quenching temperature, guarantees the quality of quenching; Waterworks 7 uses with the closed loop that backflow groove 9, quench water storage tanks 10 and quench water refrigerating unit 11 form water coolant.Quench water refrigerating unit 11 can keep quenching water temperature lower than 35 DEG C.Quench water circulating path is provided with strainer 15(or filtering net), avoid spray nozzle clogging, realize stably manufactured.
Taking No. 16 flat bulb steel workpiece quenchings as example, its concrete technology parameter is selected as follows: pre-hot-wire coil 4: frequency 10KHz, power 200KW; Heater coil 5: frequency 20KHz, power 160KW; The regulating frequency of the variable-frequency motor 20 of pinch roll 17 is that the traveling speed of the corresponding workpiece of 21Hz is: 500mm/min; Workpiece quenching temperature: 980 DEG C, after 670 DEG C of tempering of postorder, obtain following high-quality mechanical property, all meet war products requirement:
Lower yield strength: 690N/mm
2(standard-required 590～750N/mm
2);
Tensile strength: 755N/mm
2(standard-required>=655N/mm
2);
Elongation after fracture: 21.5%(standard-required >=16%);
End face shrinking percentage: 78.0%(standard-required >=60%);
-20 DEG C of ballistic works: 136J(standard-required >=100J);
-20 DEG C of end face fiber rates: 100%(standard-required >=100%).
Claims (2)
1. a 921A flat bulb steel penetration induction hardening equipment, comprise floating installation and rollgang, it is characterized in that, upstream and downstream at floating installation arranges respectively clamping and conveying device, described clamping and conveying device comprises upper and lower a pair of pinch roll, pair of right and left gear roller, on pinch roll, be coated with and hang with the rubber layer of heat-resistant antifriction, under pinch roll connect successively step-down gear and variable-frequency motor; On the passage of flat bulb steel after floating installation, be provided with successively pre-hot-wire coil and heater coil, two groups of coils are Shuangzi coil structures, and between two groups of coils, distance H is 200～300mm, and the spacing h of two subloops in coil is 25～50mm; Be provided with temperature test probe in the downstream of heater coil; Waterworks is located at the downstream of heater coil, and it is the structure of rectangle and many rounds that waterworks adopts cross section, and water jet is towards a side opening, and water spraying direction tilts 30～45 ° towards flat bulb steel travel direction, and waterworks is supplied water by five suction culverts; Between waterworks and heater coil, be provided with air-jet device, described waterworks and backflow groove, quench water storage tanks and quench water refrigerating unit form the closed loop of water coolant.
2. a kind of 921A flat bulb steel penetration induction hardening equipment according to claim 1, it is characterized in that, described pre-hot-wire coil is connected with pre-thermoelectric generator through soft line, heater coil is connected with heating power supply through soft line, pre-thermoelectric generator is all connected by water lines with power supply refrigerating unit with heating power supply, and power supply heat-eliminating medium is industrial soft water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320889704.XU CN203728879U (en) | 2013-12-31 | 2013-12-31 | Penetration induction heating hardening device for 921A flat-bulb steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320889704.XU CN203728879U (en) | 2013-12-31 | 2013-12-31 | Penetration induction heating hardening device for 921A flat-bulb steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203728879U true CN203728879U (en) | 2014-07-23 |
Family
ID=51198965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320889704.XU Expired - Fee Related CN203728879U (en) | 2013-12-31 | 2013-12-31 | Penetration induction heating hardening device for 921A flat-bulb steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203728879U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107723433A (en) * | 2017-11-01 | 2018-02-23 | 宁波德科自动门科技有限公司 | A kind of overlength bar special steel quenching unit |
| CN109593933A (en) * | 2019-01-15 | 2019-04-09 | 北京科技大学 | A kind of slab automatic on-line quenching unit and method |
-
2013
- 2013-12-31 CN CN201320889704.XU patent/CN203728879U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107723433A (en) * | 2017-11-01 | 2018-02-23 | 宁波德科自动门科技有限公司 | A kind of overlength bar special steel quenching unit |
| CN109593933A (en) * | 2019-01-15 | 2019-04-09 | 北京科技大学 | A kind of slab automatic on-line quenching unit and method |
| CN109593933B (en) * | 2019-01-15 | 2024-01-23 | 北京科技大学 | Automatic online quenching device and method for casting blank |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140723 |