CN104419806A - Intermediate-frequency quenching equipment for inner walls of steel tubes - Google Patents
Intermediate-frequency quenching equipment for inner walls of steel tubes Download PDFInfo
- Publication number
- CN104419806A CN104419806A CN201310406136.8A CN201310406136A CN104419806A CN 104419806 A CN104419806 A CN 104419806A CN 201310406136 A CN201310406136 A CN 201310406136A CN 104419806 A CN104419806 A CN 104419806A
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- Prior art keywords
- quenching
- workpiece
- supporting plate
- coil
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
- C21D9/085—Cooling or quenching
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
- C21D1/10—Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
- C21D1/667—Quenching devices for spray quenching
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2221/00—Treating localised areas of an article
- C21D2221/10—Differential treatment of inner with respect to outer regions, e.g. core and periphery, respectively
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention relates to intermediate-frequency quenching equipment for the inner walls of steel tubes. The adopted technical scheme is as follows: the intermediate-frequency quenching equipment comprises a cooling tower and a quenching part, and is characterized in that the quenching part is installed on a non-workpiece side installed on the body of a quenching machining tool, a supporting plate at a workpiece side is installed on the body of the quenching machining tool through a linear guideway on the body of the quenching machining tool; the supporting plate is in threaded connection with a nut-screw pair, the nut-screw pair is connected with a supporting plate drive system, a chuck capable of fixing a pipeline workpiece is arranged on the supporting plate, and the chuck is connected with a workpiece rotation drive system; the quenching main machine of the quenching machining tool of the quenching part is connected with a quenching coil and a spray coil. The intermediate-frequency quenching equipment has the following beneficial effects that a quite high quenching quality can be easily obtained, the quenching quality is high, the production cost is low, the automation degree is high, the depth of a quenching layer, a quenching hardness and the like can be controlled, the oxidation burns of metal are less, the oxide skins are few, and the deformation amount is low, in this way, the waste of metal materials is reduced, the control is simple, and requirements on the labour skill levels of workers are low.
Description
Technical field
The present invention relates to the quenching apparatus of steel pipe inner wall, particularly relate to mid-frequency quenching equipment for inner wall of steel tube.
Background technology
Between this equipment occurs, major part adopts flame quenching, and flame quenching exists following shortcoming:
(1) not easily stably Mass Control.The controlled factordisease of the height of flame-hardened quality is a lot: as the ratio of oxygen-acetylene, the level of skill etc. of operator, directly can affect the quality of workpiece;
(2) major part be manual operations and with visual inspection to grasp temperature.Surface is easily burnt, overheated and hardening crack, is difficult to reach uniform quenched case and high surface hardness.
(3) mechanize straight-lined manufacturing is realized comparatively difficult.
(4) homogeneity of flame heating is difficult to ensure, is therefore easy to ftracture when quenching to the table of medium high carbon and steel alloy.
Easily there is the burn of metallic substance in flame quenching, oxide skin is many, easily occurs the waste of metallic substance.
Summary of the invention
Invention
object:mid-frequency quenching equipment for inner wall of steel tube utilizes Frequency Induction Heating principle, from the heating of tube wall inside.Pipe interior quenching strengthens inner-walls of duct hardness, and improve work-ing life, the present invention can provide the equipment of this medium frequency quenching.
In order to reach as above object, the present invention takes following technical scheme: comprise cooling tower and quenching part, it is characterized in that: quenching part is arranged on the non-workpiece side on quenching machine lathe bed, workpiece side has supporting plate mounted thereto by the line slideway on quenching machine lathe bed, supporting plate is connected with nut screw deputy thread, nut screw pair is connected with supporting plate drive system, and supporting plate has can the chuck of restrained line workpiece, and described chuck is connected with workpiece rotary drive system; The quenching machine quenching main frame of quenching part is connected with quenching coil and spray coil.
The further technical scheme of the present invention is: described quenching machine lathe bed also has 1 with upper bracket.
The further technical scheme of the present invention is: described cooling tower is closed cooling tower, and described closed cooling tower stretches out return water pipe and rising pipe, and return water pipe and rising pipe stretch out branch is connected with power cabinet part with quenching machine lathe bed respectively.
The further technical scheme of the present invention is: quenching coil and spray coil are fixed up by coil brace by described quenching machine quenching main frame.
Adopt the mid-frequency quenching equipment for inner wall of steel tube of as above technical scheme, have as follows
beneficial effect:induction heating difference and flame quenching, induction heating utilizes electromagnetic induction principle, and it does not contact workpiece, power during heating, depth of hardening, and speed during quenching is all directly controlled by power supply, so just can be easy to obtain very high quenching quality.
This equipment utilizes electromagnetic induction heating technology, and induction heating is the optimal a kind of type of heating of hard surfacing.Due to the impact of proximity effect and surface action, be definite value near exterior skin penetration depth in workpiece one deck directly generates heat during induction heating, pocketed heat is little; If control heat-up time, increase heating power, be that the heat of direct heating layer has little time to pass to inside workpiece, so just can meet hard-faced requirement.
Generally speaking, this equipment has outstanding effect useful as follows:
Quenching quality is high, and this equipment passes through the mode adopting workpiece movable and rotation, to pipe orifice surface induction hardening.The mobile of workpiece adopts stepper-motor, and realized the side-to-side movement of slide plate by ball-screw-transmission pair and straight line, translational speed can set arbitrarily according to processing requirement, moves brisk, adopts to precision high, accurate positioning; Workpiece rotates: adopt buncher, by speed regulating handwheel, can realize workpiece speed governing.Rotating speed can require adjustment rotating speed according to quenching technology.Coordinate online infrared thermometer simultaneously, control hardened face temperature, so just control to quench quality, the quality of quenching is high, and scrap rate is low.Because this equipment adopts induction heating mode, it can be implemented in the surperficial high power density distribution in depth of hardening.Unique workpiece and mode of motion (workpiece rotates and moves) ensure that the homogeneity of quenching.Also prevent the burning of metallic substance simultaneously, reduce the appearance of waste product;
Production cost is low, and because induction heating has proximity effect and surface action, be in workpiece be that one deck of definite value directly generates heat near exterior skin penetration depth during induction heating, pocketed heat is little; Which reduces the loss of heat, improve efficiency, decrease production cost;
High automation, is convenient to pipelining.This automation degree of equipment is high, adopts PLC centralized Control.Significantly reduce labour intensity, can pipelining be realized.
The degree of depth of quenched case and quenching hardness etc. can be controlled.
The oxidation burn of metal is few, and oxide skin is few, and deflection is little, which reduces the waste of metallic substance.
Control simple, lower to the labour skill level requirement of workman.This equipment adopts PLC to control, and completes at equipment debugging, the power that only power supply need be regulated to export according to the diameter of pipe during normal production, controls convenient and simple like this.Without the need to carrying out a large amount of professional trainings to workman.
accompanying drawing illustrates:
In order to further illustrate the present invention, be described further below in conjunction with accompanying drawing:
Accompanying drawing is the structural representation of an embodiment of invention:
Wherein: 1. supporting plate drive system; 2. line slideway; 3. nut screw is secondary; 4. workpiece rotary drive system; 5. supporting plate; 6. chuck; 7. quenching workpiece; 8. support; 9. quench coil; 10. spray coil; 11. quenching machine lathe beds; 12. quenching machine quenching main frames; 13. induction hardening transformers; 14. operator's console; 15. harmonic elimination apparatus; 16. intermediate frequency power supplies; 17. closed cooling towers; 18. return water pipes; 19. rising pipes.
embodiment:below
by reference to the accompanying drawingsembodiments of the invention are described,
the present embodiment is not construed as limiting the invention:
The present invention takes following technical scheme: comprise cooling tower and quenching part, it is characterized in that: quenching part is arranged on the non-workpiece side on quenching machine lathe bed 11, workpiece side has supporting plate 5 mounted thereto by the line slideway 2 on quenching machine lathe bed 11, supporting plate 5 is threaded with nut screw pair 3, nut screw pair 3 is connected with supporting plate drive system 1, supporting plate 5 has can the chuck 6 of restrained line workpiece, and described chuck 6 is connected with workpiece rotary drive system 4; The quenching machine quenching main frame 12 of quenching part is connected with quenching coil 9 and spray coil 10.
The further technical scheme of the present invention is: described quenching machine lathe bed 11 also has 1 with upper bracket 8.
The further technical scheme of the present invention is: described cooling tower is closed cooling tower 17, described closed cooling tower 17 stretches out return water pipe 18 and rising pipe 19, and return water pipe 18 and rising pipe 19 stretch out branch is connected with power cabinet part with quenching machine lathe bed 11 respectively.
The further technical scheme of the present invention is: quenching coil 9 and spray coil 10 are fixed up by coil brace by described quenching machine quenching main frame 12.
Mid-frequency quenching equipment for inner wall of steel tube adopts workpiece movable mode, to pipe orifice surface induction hardening.This lathe has the function such as manual operation and automatic operation.
Be below a kind of mode of enforcement:
1, bed piece and base adopt Q235A hot rolling GB channel-section steel, welded-steel plate construction, and sectional dimension is large, and frame rigidity is good, and postwelding entirety carries out destressing process, after eliminating stress, carry out lathe bed machining, ensure that lathe bed long-term stability is indeformable.Lathe bed rail plate is cylindrical linear guide rail, and guide material is bearing steel, plating hard chromium on surface process, with the rustless property reached.
2, workpiece movable system, adopts stepper-motor, and can be realized the side-to-side movement of supporting plate 5 by ball-screw-transmission pair and line slideway 2, translational speed can set arbitrarily according to processing requirement, moves brisk, adopts to precision high, accurate positioning.
3, workpiece rotates: workpiece rotary drive system 4 can employing buncher, by speed regulating handwheel, can realize workpiece speed governing.Rotating speed can require adjustment rotating speed according to quenching technology.
4, electrical control part: independent housing, to be made up of the part such as digital control system, driving mechanism, transformer, intermediate relay.Lathe electric power incoming line is 220V.The special-purpose numerical control system that machine tool numerical control system selects Nanjing to produce.By numerical control keyboard can realize processing sequence selection, deletion, revise, call, manually, automatically, heating, rotation, the operation such as water spray.Lathe is provided with limiting protection function.There is higher safe reliability.
5, hydrojet is controlled by numerical control program by two groups of magnetic valves.
6, lathe possesses manually and automatic function.Manually and automatic operation linkage interlocked.During manual work state, independent movement, rotation, heating, water spray can be carried out.Manual operation is mainly for carrying out lathe and workpiece debugging.During auto state, mainly carry out regular lot production.
The rough flow of this lathe work is as follows:
1) claw of clamping workpiece-unclamp chuck 6, open two supports in the middle part of lathe, put into workpiece, suitable turning of work piece, expansion chuck 6, adjust the centre-height of support, put in a debug state by the mode switch on lathe, the workpiece on crawl lathe rotates to press to be turned round, and observes beating (must not be greater than 1mm) of workpiece, as workpiece is beated too large, according to method above from new clamping workpiece;
2) open water pump, whether the water pressure gauge observed everywhere is normal, and especially whether the spray coil of inductor block is normal;
3) intermediate frequency (will start in strict accordance with the boot sequence of intermediate frequency specification sheets) is started, regulating power, after power setting is good, under the mode switch of lathe is placed on automatic running status, the infrared thermometer of lathe is according to the quenching surface sweeping speed of temperature closed loop automatic regulating machine bed, and such lathe just enters normal working order work.
The mode of motion of workpiece is stablized, and this equipment have employed the mobile unique way adding rotation when quenching, this ensure that the quality of quenching, can ensure the homogeneity of quenching simultaneously.
Be mainly used in petroleum pipe line inner-wall spraying, carburizing, the quenching of concrete pump line inwall, the inner quenching of pump line, the quenching of wear-resistant pipe inwall, the quenching of wear pump inside pipe wall quenching apparatus, cement transportation inside pipe wall, mixed earth transfer lime inwall quenching apparatus, jib inside pipe wall quenching apparatus.
because that writes is non exhaustive, the embodiment of this patent is not by the restriction of above examples of implementation, and similar embodiment is also in protection scope of the present invention.
Claims (4)
1. mid-frequency quenching equipment for inner wall of steel tube, comprise cooling tower and quenching part, it is characterized in that: quenching part is arranged on the non-workpiece side on quenching machine lathe bed (11), workpiece side has supporting plate (5) mounted thereto by the line slideway (2) on quenching machine lathe bed (11), supporting plate (5) is threaded with nut screw pair (3), nut screw pair (3) is connected with supporting plate drive system (1), supporting plate (5) has can the chuck (6) of restrained line workpiece, and described chuck (6) is connected with workpiece rotary drive system (4); Quenching machine quenching main frame (12) of quenching part is connected with quenching coil (9) and spray coil (10).
2. mid-frequency quenching equipment for inner wall of steel tube as claimed in claim 1, is characterized in that: described quenching machine lathe bed (11) is upper also has 1 with upper bracket (8).
3. mid-frequency quenching equipment for inner wall of steel tube as claimed in claim 1, it is characterized in that: described cooling tower is closed cooling tower (17), described closed cooling tower (17) stretches out return water pipe (18) and rising pipe (19), and return water pipe (18) and rising pipe (19) stretch out branch is connected with power cabinet part with quenching machine lathe bed (11) respectively.
4. as described in claim 1 or 2 mid-frequency quenching equipment for inner wall of steel tube, is characterized in that: described quenching machine quenching main frame (12) will quench coil (9) and spray coil (10) and be fixed up by coil brace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310406136.8A CN104419806A (en) | 2013-09-09 | 2013-09-09 | Intermediate-frequency quenching equipment for inner walls of steel tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310406136.8A CN104419806A (en) | 2013-09-09 | 2013-09-09 | Intermediate-frequency quenching equipment for inner walls of steel tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104419806A true CN104419806A (en) | 2015-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310406136.8A Pending CN104419806A (en) | 2013-09-09 | 2013-09-09 | Intermediate-frequency quenching equipment for inner walls of steel tubes |
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| Country | Link |
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| CN (1) | CN104419806A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105648190A (en) * | 2016-01-29 | 2016-06-08 | 宝山钢铁股份有限公司 | Method and device for improving hardness of inner wall of steel tube |
| CN108359772A (en) * | 2018-02-01 | 2018-08-03 | 重庆工业职业技术学院 | Heating type metal material low pressure process equipment |
| CN111118265A (en) * | 2020-01-14 | 2020-05-08 | 新昌县善力机械科技有限公司 | Concrete pump pipe inner wall guenching unit |
-
2013
- 2013-09-09 CN CN201310406136.8A patent/CN104419806A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105648190A (en) * | 2016-01-29 | 2016-06-08 | 宝山钢铁股份有限公司 | Method and device for improving hardness of inner wall of steel tube |
| CN108359772A (en) * | 2018-02-01 | 2018-08-03 | 重庆工业职业技术学院 | Heating type metal material low pressure process equipment |
| CN111118265A (en) * | 2020-01-14 | 2020-05-08 | 新昌县善力机械科技有限公司 | Concrete pump pipe inner wall guenching unit |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150318 |