CN114540585A - Quenching heat treatment method for forged piece with hole - Google Patents
Quenching heat treatment method for forged piece with hole Download PDFInfo
- Publication number
- CN114540585A CN114540585A CN202011313056.4A CN202011313056A CN114540585A CN 114540585 A CN114540585 A CN 114540585A CN 202011313056 A CN202011313056 A CN 202011313056A CN 114540585 A CN114540585 A CN 114540585A
- Authority
- CN
- China
- Prior art keywords
- quenching
- heat treatment
- water outlet
- hole
- forging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C21D1/63—Quenching devices for bath 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
- 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
- C21D11/00—Process control or regulation for heat treatments
-
- 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
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- 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
- Y02P10/20—Recycling
Abstract
The invention discloses a quenching heat treatment method for a perforated forged piece, which comprises a front-end water outlet structure and a rear-end control structure, wherein the front-end water outlet structure comprises a water outlet tool, an extension pipe and a water nozzle, a hose is connected by using a conversion joint, the hose is connected with a throttle control valve and a lift water pump device, an integral operation control system is connected and controlled by a PLC (programmable logic controller), the lift water pump is placed into a quenching liquid tank during quenching, when a heat treatment quenching cooling process is carried out, a water outlet of the water outlet tool is correspondingly inserted into an inner hole of a workpiece, a PLC flow rate control system is turned on, a lift water pump switch is turned on, a mechanical quenching frame above quenching liquid is operated, the workpiece is immersed into the quenching liquid, and the heat treatment quenching process operation of the part is carried out. In the quenching and cooling process of the workpiece, the quenching liquid always keeps cooling the inner hole of the part, so that the inner hole is quickly and uniformly cooled through heat treatment. This provides effectual quality assurance for forging heat treatment process hole quality.
Description
Technical Field
The invention relates to a quenching heat treatment method for a forge piece with a hole, and belongs to the technical field of quenching and cooling of a hot-worked forge piece.
Background
Quenching is a heat treatment process in which a metal finished product or part is heated to a temperature above the phase transition temperature, and after heat preservation, the metal finished product or part is rapidly cooled at a cooling speed higher than the critical cooling speed to obtain a martensite structure. The quenching is to obtain a martensite structure, and the workpiece obtains good use performance after tempering so as to fully exert the potential of the material. The primary purpose of quenching is to improve the mechanical properties of the metal product or part. For example: the hardness and the wear resistance of tools, bearings and the like are improved, the elastic limit of a spring is improved, and the comprehensive mechanical property of shaft parts is improved; improve the material properties or chemical properties of some special steels. Such as improving the corrosion resistance of stainless steel, increasing the permanent magnetism of magnetic steel, etc. During quenching and cooling, besides reasonably selecting a quenching medium, a correct quenching method is required, and the commonly used quenching methods mainly comprise single-liquid quenching, double-liquid quenching, step quenching, isothermal quenching, local quenching and the like.
The quenching cooling speed is an important factor which can influence the quenching quality and determine the residual stress, and is a factor which can exert important or even decisive influence on quenching cracks. For quenching purposes, it is generally necessary to accelerate the cooling rate of the part in the high temperature range beyond the critical quenching cooling rate of the steel to achieve a martensitic structure. This reduces the tensile stress on the surface of the workpiece to suppress longitudinal cracking, as it increases the thermal stress value that counteracts the effect of the structural stress, in terms of residual stress. The effect will increase with increasing cooling rate at high temperature. The quench cooling uniformity becomes especially critical.
In addition to the existing quenching operation which is an artificial water pool cooling mode, the control influence factor is large, factors (including metallurgical defects) which can cause stress concentration exist on different parts of a quenching piece, promote the generation of quenching cracks, but can be shown only in a tensile stress field, and particularly under the condition that the cooling speed difference between the inner hole and the external surface is large, the stress cracks of the inner hole are easier to generate,
therefore, a method of quenching heat treatment of a holed forging is needed to solve the above problems.
Disclosure of Invention
According to the use of different liquid quenching liquids in the heat treatment cooling process, the difference of internal and external cooling speeds is balanced, the stress release in the internal and external quenching processes of a balanced material is realized, the quality risk of inner hole cracks is reduced, the rejection rate is reduced, the production period is shortened, the production efficiency is improved, and the method for quenching heat treatment of the forged piece with the hole is provided, and the specific technical scheme is as follows: comprises that
The method comprises the following steps: the water outlet tool with the suitable specification is selected according to the structure and the number of the holes of the forge piece to be subjected to heat treatment, the lengthening pipe suitable for connection is selected according to the hole depth, and 1/4 with the length being the depth of the hole of the product is the best length in principle. The length of the extension pipe comprises five specifications of 200mm, 400mm, 600mm, 800mm and 1000mm, and is connected with the water outlet tool through internal and external threads, and then the appropriate water outlet nozzle type is selected according to the quenching cooling time and the material characteristics of the heat treatment process, and the extension pipe and the water outlet tool are connected with each other to form a front water outlet structure of the integral flow guide device.
Step two: the tail end of the lengthened pipe is additionally provided with a pipeline adapter to convert the tail end of the iron straight steel pipe into a hose, the hose is sequentially connected with a throttling device and a lift water pump, the lift water pump is placed at the bottom of the quenching liquid tank, and the effect of recycling the quenching liquid is achieved in quenching cooling operation. The parameters of the selected poplar water pump (5) comprise the flow: 1-22m3H, lift: 6-232m, power: 0.37-15kw, rotation speed: 2900r/min, caliber: phi 25-phi 50, temperature range: -15 ℃ to + 120 ℃.
Step three: the lift water pump and the throttling device are both connected with a power supply, are opened through an electric switch and are connected through a PLC electric control system.
Step four: the water outlet structure at the front end of the water guide device is correspondingly placed in an inner hole of a workpiece, the water outlet structure is placed in a quenching liquid tank when a lift water pump is quenched, when a heat treatment quenching cooling procedure is executed, setting throttle parameters according to the process requirements, wherein the throttle parameters comprise flow rate/water passing and stop time, the lift water pump and the throttling device are started through the PLC electrical control system to be electrified to work and operate, and a stirrer switch at the bottom of the quenching tank controlled by an 11kw motor is turned on, a mechanical quenching frame above the quenching liquid is operated to slowly immerse the product in the quenching liquid, according to the requirements of the heat treatment process of the parts, liquid quenching liquids corresponding to different materials are different, the heat treatment quenching process operation of the parts is started to enable the quenching liquids to be flushed into the surfaces of the inner holes, and the surface of the inner hole is cooled circularly, so that the heat treatment, cooling and cooling operation of the inner hole of the shale gas fracturing pump is realized.
Has the advantages that:
the method for cooling the inner hole of the forging through heat treatment can be used for various liquid quenching media and is suitable for rapid cooling operation on site. The production device has simple structure and easy operation, effectively reduces the labor intensity of heat treatment operators, reduces the production time and shortens the production period.
The forging die is also applicable to various forgings made of different materials, meets the requirement of batch production, improves the production efficiency, reduces the rejection rate, reduces the influence of human factors in the cooling process of heat treatment operation in the aspect of product quality, improves the automation of operation, and has better implementation effect through the verification of production practice.
This provides effectual quality assurance for forging heat treatment process hole quality.
Drawings
FIG. 1 is a technical schematic diagram of a cooling device for quenching heat treatment of a forged piece with a hole, which is disclosed by the invention;
FIG. 2 is a schematic view of a forging to be detected in embodiment 1;
FIG. 3 is a schematic view of a forging to be detected in embodiment 2;
FIG. 4 is a schematic view of a forging to be detected in embodiment 3;
FIG. 5 is a view of the water outlet nozzle of the present invention; 5 a-straight-through water outlet nozzle, 5 b-dispersed point type fog outlet nozzle, 5 c-rotary water nozzle and 5 d-swing water nozzle;
FIG. 6 is a corresponding view of the forging structure and the water outlet fixture of the present invention; the forging tool comprises a 6-1a straight-cylinder single-hole tool, a 6-1b single-hole forging structure, a 6-2a straight-cylinder multi-hole tool, a 6-2b unidirectional multi-hole forging structure, a 6-3a spherical tool (a water outlet at 4), a 6-3b multidirectional multi-hole forging structure (a tee joint/a cross joint), a 6-4a spherical tool (a single water outlet), a 6-4b unidirectional blind hole forging structure, a 6-5a spherical tool (a water outlet at 3) and a 6-5b multidirectional blind hole forging structure.
Reference numerals: the device comprises a water nozzle 1, a water outlet tool 2, an extension pipe 3, a pipeline 4, a hose 5, a throttling device 6, a PLC electric control system 7, a lift water pump 8 and a stirrer 9.
Detailed Description
The present invention is further illustrated by the following figures and specific examples, which are to be understood as illustrative only and not as limiting the scope of the invention, which is to be given the full breadth of the appended claims and any and all equivalent modifications thereof which may occur to those skilled in the art upon reading the present specification.
The quenching heat treatment method of the forged piece with the hole comprises
Step one, assembling a front-end water outlet structure: selecting a water outlet tool 2 according to the specification of a forge piece hole to be thermally treated, selecting an extension pipe 3 according to the depth of the hole, installing and connecting the extension pipe 3 with the water outlet tool 2, and installing a water nozzle 1 at the tail end of the extension pipe 3;
step two, assembling a rear end control structure: the tail end of the lengthened pipe 3 is additionally provided with a pipeline converter 4, the pipeline converter 4 is connected with a hose 5, and the hose 5 is sequentially connected with a throttling device 6 and a lift water pump 8;
step three: completing the electrical connection: the lift water pump 8 and the throttling device 6 are connected with a power supply, and the lift water pump 6 and the throttling device 6 are connected through a PLC (programmable logic controller) electrical control system 7;
step four: the front-end water outlet structure is placed in an inner hole of a forge piece, the lift water pump 8 is placed at the bottom of the quenching tank, throttling parameters are set according to technological requirements, the lift water pump 8 and the throttling device 6 are started through the PLC electrical control system 7, the power-on work of the lift water pump is enabled to be operated, the stirrer 9 located at the bottom of the quenching tank is started, and the mechanical quenching frame above quenching liquid is operated, so that a product is immersed in the quenching liquid, the quenching liquid is flushed into the surface of the inner hole, and the surface of the inner hole is cooled circularly.
The extension tube is 1/4 of the depth of the workpiece hole. The parameters selected by the lift water pump 8 comprise flow: 1-22m3H, lift: 6-232m, power: 0.37-15kw, rotation speed: 2900r/min, caliber: phi 25-phi 50, temperature range: -15 ℃ to + 120 ℃. The water nozzle 1 comprises a straight-through water outlet nozzle, a dispersed point type fog-like water outlet nozzle, a rotary water nozzle and a swing water nozzle. As shown in fig. 5. When the workpiece is in a single-hole type forge piece structure, a straight-tube single-hole type water outlet tool is selected; when the workpiece is in a one-way porous forging structure, a straight-cylinder porous tool is selected; the workpiece isThe multidirectional porous forging structure adopts a spherical tool with a single water outlet; when the workpiece is in a multi-direction blind hole forging structure, a spherical workpiece with 3 water outlets is selected. As shown in fig. 6.
Example 1:
detecting a forged piece: the oil pipe hanger and the material AISI 410 are processed by a heat treatment method of quenching heating → quenching → tempering heating, wherein after the heat treatment state is rough machining, a quenching liquid medium is F2000 polymer, a through hole with the middle diameter of 1 Xphi 70 +/-1 mm is machined, the surface entering a furnace is a rough machining surface, and the heat treatment process requires that:
1. when quenching and heating are carried out, the charging temperature is less than or equal to 695 ℃, and the temperature rising speed is less than or equal to 200 ℃/h.
2. When tempering and heating are carried out, the charging temperature is less than or equal to 475 ℃, and the heating speed is less than or equal to 200 ℃/h.
3. During solution quenching, the workpiece is immersed in the quenching liquid and moves up and down for at least 9 minutes.
4. The time interval of transferring the part to a tempering furnace after the solution quenching of the part is finished is not more than 85 minutes.
The method comprises the following steps: the straight-through water type water outlet nozzle is suitable for a straight-tube single-hole type tool, and a 200mm lengthened pipe is connected with the tail part of the straight-tube single-hole type tool through internal and external threads.
Step two: the tail end of the lengthening pipe is additionally provided with a pipeline adapter, the tail end of the iron straight steel pipe is converted into a connectable hose, the hose is sequentially connected with a throttling device and a lift water pump, the lift water pump is placed at the bottom of the quenching liquid tank, and the effect of recycling the quenching liquid is achieved in quenching cooling operation. The selected parameters of the poplar pump are adjusted to flow: 6m3H, lift: 40m, power: 5kw, rotation speed: 1800r/min, caliber: phi 50mm, temperature range: -15 ℃ to + 120 ℃.
Step three: and then the lift water pump and the throttling device are both connected with a power supply. The electric switch is turned on, and the PLC electric control system is used for connection control.
Step four: the method comprises the steps of putting a water guide device into an inner hole of an oil pipe hanger, putting a lift water pump into a quenching liquid tank during quenching, setting throttling parameters (water is introduced for 6 minutes and stops for 3 minutes) according to process requirements during the heat treatment quenching cooling process, starting the lift water pump and the throttling device through a PLC (programmable logic controller) electrical control system to enable the lift water pump and the throttling device to be powered on to work, starting a stirrer switch at the bottom of a quenching tank controlled by an 11kw motor, operating a mechanical quenching frame above quenching liquid to enable a product to be slowly immersed into the quenching liquid, and starting to execute the heat treatment quenching process operation of parts according to different liquid quenching liquids made of different materials according to the heat treatment process requirements of the parts, so that the quenching liquid rushes into the surface of the inner hole to circularly cool the surface of the inner hole, thereby realizing the heat treatment cooling operation of the inner hole of the shale gas fracturing pump.
Example 2:
detecting a forged piece: the sleeve head and the material 4340 are processed by a heat treatment method of heating → quenching → tempering heating, wherein after rough machining is carried out in the heat treatment state, the quenching liquid medium is water, a through hole with the diameter of 5X phi 80 +/-1 mm in the middle is machined, the surface entering the furnace is a rough machined surface, and the heat treatment process requires that:
1. when heating, the charging temperature is less than or equal to 545 ℃, and the heating speed is less than or equal to 200 ℃/h.
2. When tempering and heating are carried out, the charging temperature is less than or equal to 428 ℃, and the heating speed is less than or equal to 200 ℃/h.
3. When quenching, the workpiece is immersed in the quenching liquid and moves up and down for at least 19 minutes.
4. The time interval between the parts after quenching and the time interval between the parts must be 85 minutes.
The method comprises the following steps: the spray type water outlet nozzle is suitable for a straight single-hole type tool and is additionally provided with a scattered point type mist water outlet nozzle, and a 200mm lengthened pipe is selected to be connected with the tail part of the straight single-hole type tool through internal and external threads.
Step two: the tail end of the lengthening pipe is additionally provided with a pipeline adapter, the tail end of the iron straight steel pipe is converted into a connectable hose, the hose is sequentially connected with a throttling device and a lift water pump, the lift water pump is placed at the bottom of the quenching liquid tank, and the effect of recycling the quenching liquid is achieved in quenching cooling operation. The selected parameters of the poplar pump are adjusted to flow: 6m3H, lift: 40m, power: 5kw, rotation speed: 1800r/min, caliber: phi 50mm, temperature range: -15 ℃ to + 120 ℃.
Step three: and then the lift water pump and the throttling device are both connected with a power supply. The electric switch is turned on, and the PLC electric control system is used for connection control.
Step four: the method comprises the steps of putting a water guide device into an inner hole of an oil pipe hanger, putting a lift water pump into a quenching liquid tank during quenching, setting throttling parameters (water is supplied for 14 minutes and stops for 4 minutes) according to process requirements during the heat treatment quenching cooling process, starting the lift water pump and the throttling device through a PLC (programmable logic controller) electrical control system to enable the lift water pump and the throttling device to be powered on to work, starting a stirrer switch at the bottom of a quenching tank controlled by an 11kw motor, operating a mechanical quenching frame above quenching liquid to enable a product to be slowly immersed into the quenching liquid, and starting to execute the heat treatment quenching process operation of parts according to different liquid quenching liquids made of different materials according to the heat treatment process requirements of the parts, so that the quenching liquid rushes into the surface of the inner hole to circularly cool the surface of the inner hole, thereby realizing the heat treatment cooling operation of the inner hole of the shale gas fracturing pump.
Example 3:
detecting a forged piece: the sleeve head, the material 4140 and the heat treatment method are quenching → tempering heating, after the heat treatment state is rough machining, the quenching liquid medium is water, the middle blind hole with the diameter of 1X phi 210 +/-1 mm and the depth of 610mm is machined, the furnace entering surface state is the rough machining surface, and the heat treatment process requires that:
1. when heating, the charging temperature is less than or equal to 520 ℃, and the heating speed is less than or equal to 200 ℃/h.
2. When tempering and heating are carried out, the charging temperature is less than or equal to 415 ℃, and the temperature rise speed is less than or equal to 200 ℃/h.
3. When quenching, the workpiece is immersed in the quenching liquid and moves up and down for at least 12 minutes.
4. The time interval of transferring the part to a tempering furnace after the quenching of the part is finished is not more than 75 minutes.
The method comprises the following steps: the spray type mist water outlet nozzle is suitable for a spherical single-port water outlet tool and is additionally provided with a scattered point type mist water outlet nozzle, and a 200mm lengthened pipe is selected to be connected with the tail part of a straight single-port tool through internal and external threads.
Step two: the tail end of the lengthening pipe is additionally provided with a pipeline adapter, the tail end of the iron straight steel pipe is converted into a connectable hose, the hose is sequentially connected with a throttling device and a lift water pump, the lift water pump is placed at the bottom of a quenching liquid tank and is quenchedCooling operation, and the effect of recycling the quenching liquid is achieved. The selected parameters of the poplar stroke water pump are adjusted into flow: 6m3H, lift: 40m, power: 5kw, rotation speed: 1800r/min, caliber: phi 50mm, temperature range: -15 ℃ to + 120 ℃.
Step three: and then the lift water pump and the throttling device are both connected with a power supply. The electric switch is turned on, and the PLC electric control system is used for connection control.
Step four: the method comprises the steps of putting a diversion water device into an inner hole of an oil pipe hanger, putting a lift water pump into a quenching liquid tank when quenching, setting throttling parameters (9 minutes of water and 3 minutes of stopping) according to process requirements when performing a heat treatment quenching cooling process, starting the lift water pump and a throttling device through a PLC (programmable logic controller) electrical control system to electrify the lift water pump and the throttling device to operate, starting a stirrer switch at the bottom of a quenching tank controlled by an 11kw motor, operating a mechanical quenching frame above quenching liquid to slowly immerse a product into the quenching liquid, and starting to perform part heat treatment quenching process operation according to different liquid quenching liquids corresponding to different materials according to the heat treatment process requirements of parts, so that the quenching liquid rushes into the surface of the inner hole to circularly cool the surface of the inner hole, thereby realizing the heat treatment cooling operation of the inner hole of the shale gas fracturing pump.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. A quenching heat treatment method for a forged piece with a hole is characterized by comprising the following steps: comprises that
Step one, assembling a front-end water outlet structure: selecting a water outlet tool (2) according to the specification of a hole of a forge piece to be subjected to heat treatment, selecting an extension pipe (3) according to the hole depth, installing and connecting the extension pipe (3) with the water outlet tool (2), and installing a water nozzle (1) at the tail end of the extension pipe (3);
step two, assembling a rear end control structure: the tail end of the lengthened pipe (3) is additionally provided with a pipeline converter (4), the pipeline converter (4) is connected with a hose (5), and a throttling device (6) and a lift water pump (8) are sequentially connected through the hose (5);
step three, carrying out electrical connection: the lift water pump (8) and the throttling device (6) are connected with a power supply, and the lift water pump (6) and the throttling device (6) are connected through a PLC (programmable logic controller) electrical control system (7);
step four, quenching: put into the hole of forging with front end play water structure, lift water pump (8) are put to the quenching tank bottom, open lift water pump (8) and throttling arrangement (6) through PLC electrical control system (7), make its circular telegram work operation, set up the throttle parameter of throttling arrangement (6), and open agitator (9) that are located the quenching tank bottom, operate the mechanical quenching frame above the quenching bath, make the forging dip quenching bath, front end play water structure makes the quenching liquid rush into the hole surface, to the cooling of hole surface circulation.
2. The method for quenching heat treatment of perforated forgings as claimed in claim 1, wherein: the length of the elongated tube is 1/4 of the hole depth.
3. The method for quenching heat treatment of the perforated forging as claimed in claim 1, wherein: the parameters selected by the lift water pump (8) comprise flow: 1-22m3H, lift: 6-232m, power: 0.37-15kw, rotation speed: 2900r/min, caliber: phi 25-phi 50, temperature rangeEnclosing: -15 ℃ to + 120 ℃.
4. The method for quenching heat treatment of the perforated forging as claimed in claim 1, wherein: the water nozzle (1) comprises a straight-through water outlet nozzle, a dispersed point type atomized water outlet nozzle, a rotary water nozzle and a swing water nozzle.
5. The method for quenching heat treatment of the perforated forging as claimed in claim 1, wherein: when the workpiece is in a single-hole type forging structure, a straight-cylinder single-hole type water outlet tool is selected; when the workpiece is in a one-way porous forging structure, a straight-cylinder porous tool is selected; the workpiece is in a multi-direction porous forging structure, and a ball water outlet tool with 4 water outlets is selected; when the work piece is the unilateral blind hole forging structure, choose the spherical frock of going out of single department's delivery port for use, when the work piece is multi-direction blind hole forging structure, choose the spherical frock of going out of 3 delivery ports for use.
6. The method for quenching heat treatment of perforated forgings as claimed in claim 1, wherein: the lengthening pipe (3) and the water outlet tool (2) are fixed in a threaded connection mode.
7. The method for quenching heat treatment of the perforated forging as claimed in claim 1, wherein: the throttling parameters comprise flow rate, water-passing time and stopping time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011313056.4A CN114540585A (en) | 2020-11-20 | 2020-11-20 | Quenching heat treatment method for forged piece with hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011313056.4A CN114540585A (en) | 2020-11-20 | 2020-11-20 | Quenching heat treatment method for forged piece with hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114540585A true CN114540585A (en) | 2022-05-27 |
Family
ID=81659523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011313056.4A Pending CN114540585A (en) | 2020-11-20 | 2020-11-20 | Quenching heat treatment method for forged piece with hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114540585A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102965480A (en) * | 2012-11-16 | 2013-03-13 | 上海交通大学 | Method and equipment for quenching and cooling thick-walled steel pipe |
| CN104451067A (en) * | 2014-11-28 | 2015-03-25 | 南京迪威尔高端制造股份有限公司 | Centralized/distributed heat treatment cooling device and method |
| CN204298428U (en) * | 2014-11-28 | 2015-04-29 | 南京迪威尔高端制造股份有限公司 | A kind of stirring and hollow spray streaming heat treatment cooling device |
| CN207672096U (en) * | 2017-11-30 | 2018-07-31 | 江阴振宏重型锻造有限公司 | A kind of endoporus accelerates the wind power principal axis quenching tooling of cooling |
| CN109868348A (en) * | 2019-03-06 | 2019-06-11 | 上海交通大学 | A kind of horizontal quenching refrigerating device with larger diameter internal bore shaft forgings |
| US20200283865A1 (en) * | 2019-03-06 | 2020-09-10 | Shanghai Jiao Tong University | Method for preventing cracking along the surface at the inner hole of a hollow shaft during horizontal water quenching |
| CN211620576U (en) * | 2019-12-31 | 2020-10-02 | 苏州雷格姆海洋石油设备科技有限公司 | Quenching device for inner hole of forging |
-
2020
- 2020-11-20 CN CN202011313056.4A patent/CN114540585A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102965480A (en) * | 2012-11-16 | 2013-03-13 | 上海交通大学 | Method and equipment for quenching and cooling thick-walled steel pipe |
| CN104451067A (en) * | 2014-11-28 | 2015-03-25 | 南京迪威尔高端制造股份有限公司 | Centralized/distributed heat treatment cooling device and method |
| CN204298428U (en) * | 2014-11-28 | 2015-04-29 | 南京迪威尔高端制造股份有限公司 | A kind of stirring and hollow spray streaming heat treatment cooling device |
| CN207672096U (en) * | 2017-11-30 | 2018-07-31 | 江阴振宏重型锻造有限公司 | A kind of endoporus accelerates the wind power principal axis quenching tooling of cooling |
| CN109868348A (en) * | 2019-03-06 | 2019-06-11 | 上海交通大学 | A kind of horizontal quenching refrigerating device with larger diameter internal bore shaft forgings |
| US20200283865A1 (en) * | 2019-03-06 | 2020-09-10 | Shanghai Jiao Tong University | Method for preventing cracking along the surface at the inner hole of a hollow shaft during horizontal water quenching |
| CN211620576U (en) * | 2019-12-31 | 2020-10-02 | 苏州雷格姆海洋石油设备科技有限公司 | Quenching device for inner hole of forging |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1733945B (en) | Quantized quenching apparatus in metal heat treatment and the quantized quenching method using same | |
| CN203229559U (en) | Supporting roller diathermic type power frequency induction quenching machine tool | |
| CN204939540U (en) | Mechanical lifting quenching apparatus | |
| EP3147040B1 (en) | Supercritical water method for treating internal passages | |
| CN104328249B (en) | A kind of heat treatment method of the full hollow half axle of automobile | |
| CN114540585A (en) | Quenching heat treatment method for forged piece with hole | |
| CN101831537B (en) | Method for manufacturing seamless ring and special heat treatment system thereof | |
| CN108531920A (en) | A kind of pre-treating technology of hydraulic plunger workpiece | |
| CN103468893A (en) | Quenching equipment used for large complex thin-wall aluminum alloy castings and application method thereof | |
| CN205152289U (en) | Novel gear quenching equipment | |
| CN103409600B (en) | Workpiece quenching lathe and quenching method thereof | |
| CN104762454A (en) | Preparation method and application of special quenching liquid for 50Mn steel | |
| CN110994327B (en) | Production method and production equipment for ground rod | |
| CN203487184U (en) | Workpiece quenching machine tool | |
| US20090000710A1 (en) | Quenching process utilizing compressed air | |
| CN103882199B (en) | The method and system of speciality Quenching apparatus of rod parts cooling | |
| CN109112389B (en) | A kind of cooling technique for preparing austenic globe body of control | |
| CN205046163U (en) | A cooling device for ball thermal treatment | |
| CN210916170U (en) | Quenching device with high safety performance for metal production | |
| CN108588727B (en) | A kind of surface processing technique of hydraulic plunger workpiece | |
| CN217499339U (en) | Large-diameter excircle ultrasonic frequency semi-automatic quenching device quenching roller | |
| CN202849488U (en) | Super large power frequency induction heating quenching unit | |
| CN204625711U (en) | Gear ring quenching heating device | |
| CN114517251A (en) | Heat treatment cooling device and method for 15-5PH stainless steel shale gas fracturing pump | |
| CN114540747B (en) | Preparation device and application method of inner surface gradient reinforced steel pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |