CN106755785B - A method of prevent pipe fitting parts quenching from deforming - Google Patents
A method of prevent pipe fitting parts quenching from deforming Download PDFInfo
- Publication number
- CN106755785B CN106755785B CN201611026245.7A CN201611026245A CN106755785B CN 106755785 B CN106755785 B CN 106755785B CN 201611026245 A CN201611026245 A CN 201611026245A CN 106755785 B CN106755785 B CN 106755785B
- Authority
- CN
- China
- Prior art keywords
- pipe fitting
- fixture
- pipe
- carburizing
- hollow
- 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.)
- Active
Links
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
- C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
- C21D1/20—Isothermal quenching, e.g. bainitic hardening
-
- 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
-
- 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
Abstract
The present invention provides a kind of method for preventing pipe fitting parts quenching from deforming, and the method realizes that the pipe fitting fixture is made of the integral leading portion of structure, stage casing and back segment by a kind of pipe fitting fixture, wherein the section of the leading portion is T-shaped hollow structure；The stage casing is hollow ring structure, and the side wall of the hollow ring structure uniformly opens up 4 ~ 6 rectangular recess；The back segment is hollow cylindrical structure, lifting through-hole is opened up in the hollow cylinder body, for lifting the pipe fitting fixture；The method includes：The pipe fitting fixture is inserted into the pipe fitting endoporus after carburizing to support the carburizing face of the pipe fitting, the pipe fitting fixture and the pipe fitting have same center line after insertion；Assembled pipe fitting is quenched using compound isothermal hardening mode；Quenched group of holding pipe joint is tempered；The group holding pipe joint of tempering is cooled to room temperature, the pipe fitting part being disposed after the pipe fitting fixture is extracted.
Description
Technical field
The invention belongs to metallurgical technology fields, and in particular to a method of prevent pipe fitting parts quenching from deforming.
Background technology
Pipe fitting part is that two terminals add part to dock welding structure with the electron beam of intermediate tube.Pipe fitting parts size precision
More demanding, the opposite bounce in both ends many places is 0.02mm；Pipe requires the bounce of big end benchmark to be 0.1mm；Endoporus requires circle
Column degree 0.006mm；Amount of grinding, which is controlled, after endoporus heat treatment is not more than 0.2mm.Therefore after how preventing pipe fitting parts quenching
Be deformed into key.
The reason of being deformed after the carburizing and quenching of the single-piece pipe fitting in influence pipe fitting part at present mainly has following side
Face：1. part is thin-walled class formation, most thin position wall thickness only has 1mm；2. part will pass through multiple heat treatment process, the highest temperature
Degree is at 925 DEG C or more；3. the structural stress of heat treatment process and the influence of thermal stress.Based on this three aspects reason, pipe fitting zero
Part is easily deformed in carburizing, quenching process, and deformed inner bore of part circularity is beated in 0.35mm or more, and can not
Correction.In addition, when pipe fitting part deforms, endoporus amount of grinding is more than 0.2mm after carburizing, it is difficult to ensure that endoporus circularity is beated
Reach 0.02mm and endoporus amount of grinding is not more than the requirement of 0.2mm, results in part grinding in this way and be difficult to ensure cylindricity
The requirement of 0.006mm, to cause scrapping for part, the scrappage of pipe fitting part is 75% or more at present.
Invention content
In view of the problems of the existing technology, the present invention provides a kind of method for preventing pipe fitting parts quenching from deforming, and adopts
It is not more than 0.15mm with a kind of endoporus of fixture insertion tube joint part come endoporus circularity bounce when controlling quenching, to ensure to manage
The hardness and wearability of connector carburized surface.The technical scheme is that：
A method of prevent pipe fitting parts quenching from deforming, the method is realized by a kind of pipe fitting fixture, described
Pipe fitting fixture is made of the integral leading portion of structure, stage casing and back segment, wherein the section of the leading portion is T-shaped hollow knot
Structure；The stage casing is hollow ring structure, and the side wall of the hollow ring structure uniformly opens up 4 ~ 6 rectangular recess；After described
Section is hollow cylindrical structure, lifting through-hole is opened up in the hollow cylinder body, for lifting the pipe fitting fixture；The side
Method includes：
The pipe fitting fixture is inserted into the pipe fitting endoporus after carburizing to support the carburizing face of the pipe fitting, after insertion
The pipe fitting fixture and the pipe fitting have same center line；Assembled pipe fitting is used into compound isothermal hardening mode
Quenching；Quenched group of holding pipe joint is tempered；The group holding pipe joint of tempering is cooled to room temperature, the pipe fitting fixture is extracted
The pipe fitting part being disposed afterwards.
In the above method, the material of the pipe fitting fixture is 1Cr18Ni9Ti.
In the above method, the leading portion, the stage casing are identical with the hollow parts internal diameter of the back segment.
In the above method, the pipe fitting fixture is inserted into the pipe fitting endoporus after carburizing to support the carburizing of the pipe fitting
Face ensures that the outside wall surface in stage casing and the carburizing face of pipe fitting part fit closely.
In the above method, the process conditions of the quenching are：In temperature is 850 DEG C of heating device heat preservation 40 ~
60min is then transferred to 10~15min of nitre slot inside holding that temperature is 200~260 DEG C.
In the above method, the process conditions of the tempering are：500 ~ 540 DEG C of temperature, 30 ~ 45min of soaking time.
In the above method, the pipe fitting inner bore of part circularity being disposed is beated in 0.03 ~ 0.08mm.
Beneficial effects of the present invention are：The present invention is quenched using special fixture insertion tube joint part, can be effective
Deflection in control pipe joint part quenching process, endoporus circularity bounce control is in 0.03mm~0.08mm, to effectively control
Amount of grinding after pipe joint inner bore of part carburizing ensure that pipe fitting part carburized surface hardness and wearability.And this hair
It is bright it is technically simple, production efficiency is high, can ensure the performance of pipe fitting part, started to apply in actual production.
Description of the drawings
Fig. 1 is the structural schematic diagram of pipe fitting part；
Fig. 2 is the structural schematic diagram of the pipe fitting fixture of the present invention, wherein（2-1）For the sectional view of pipe fitting fixture；
（2-2）For the side view of pipe fitting fixture；Wherein 1- leading portions, the stage casings 2-, 3- back segments, 4- lift through-hole, 5- rectangular recess；
Fig. 3 is the assembling figure after the pipe fitting fixture insertion tube joint part of the present invention；
Size is in terms of mm in figure.
Specific implementation mode
In the description of the present invention, it should be noted that the orientation or position of the instructions such as term ' preceding ', ' in ', ' rear ' ' interior '
It is to be based on the orientation or positional relationship shown in the drawings to set relationship, is merely for convenience of description of the present invention and simplification of the description, rather than
Indicate or imply that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore cannot
It is interpreted as limitation of the present invention.
In addition, the technical solution between each embodiment can be combined with each other, but must be with ordinary skill
Personnel can be implemented as basis, will be understood that this technical side when the combination of technical solution appearance is conflicting or cannot achieve
The combination of case is not present, also not the present invention claims protection domain within.
The present invention is described in further details with specific embodiment below in conjunction with the accompanying drawings, described is the solution to the present invention
It releases rather than limits.
Embodiment 1
A method of prevent pipe fitting parts quenching from deforming, the structure of the pipe fitting part is as shown in Figure 1, the side
Method realizes that the pipe fitting fixture is made of the integral leading portion 1 of structure, stage casing 2 and back segment 3 by a kind of pipe fitting fixture,
Wherein the section of the leading portion 1 is T-shaped hollow structure；The stage casing 2 is hollow ring structure, the hollow ring structure
Side wall uniformly opens up 4 ~ 6 rectangular recess 5；The back segment 3 is hollow cylindrical structure, and lifting is opened up in the hollow cylinder body
Through-hole 4, for lifting the pipe fitting fixture, the material of the pipe fitting fixture is 1Cr18Ni9Ti, the leading portion, it is described in
Section is identical with the hollow parts internal diameter of the back segment, and the structure of the pipe fitting fixture is as shown in Figure 2；The method includes：
The pipe fitting fixture is inserted into the pipe fitting endoporus after carburizing to support the carburizing face of the pipe fitting, in guarantee
The outside wall surface and the carburizing face of pipe fitting part of section fit closely, and the pipe fitting fixture and the pipe fitting have same after insertion
One center line, as shown in Figure 3；Assembled pipe fitting is quenched using compound isothermal hardening mode, the process conditions of quenching are：
60min is kept the temperature in the heating device that temperature is 850 DEG C, is then transferred to the nitre slot inside holding 15min that temperature is 260 DEG C；
Quenched group of holding pipe joint is tempered, the process conditions of tempering are：540 DEG C of temperature, soaking time 35min；It will tempering
Group holding pipe joint be cooled to room temperature, extract the pipe fitting part being disposed after the pipe fitting fixture, endoporus circle
Degree bounce is in 0.05mm.
Embodiment 2
A method of prevent pipe fitting parts quenching from deforming, the structure of the pipe fitting part is as shown in Figure 1, the side
Method realizes that the structure and material of the pipe fitting fixture are the same as embodiment 1 by a kind of pipe fitting fixture；The method includes：
The pipe fitting fixture is inserted into the pipe fitting endoporus after carburizing to support the carburizing face of the pipe fitting, in guarantee
The outside wall surface and the carburizing face of pipe fitting part of section fit closely, and the pipe fitting fixture and the pipe fitting have same after insertion
One center line, as shown in Figure 3；Assembled pipe fitting is quenched using compound isothermal hardening mode, the process conditions of quenching are：
45min is kept the temperature in the heating device that temperature is 850 DEG C, is then transferred to the nitre slot inside holding 15min that temperature is 220 DEG C；
Quenched group of holding pipe joint is tempered, the process conditions of tempering are：500 DEG C of temperature, soaking time 45min；It will tempering
Group holding pipe joint be cooled to room temperature, extract the pipe fitting part being disposed after the pipe fitting fixture, endoporus circle
Degree bounce is in 0.03mm.
Embodiment 3
A method of prevent pipe fitting parts quenching from deforming, the structure of the pipe fitting part is as shown in Figure 1, the side
Method realizes that the structure and material of the pipe fitting fixture are the same as embodiment 1 by a kind of pipe fitting fixture；The method includes：
The pipe fitting fixture is inserted into the pipe fitting endoporus after carburizing to support the carburizing face of the pipe fitting, in guarantee
The outside wall surface and the carburizing face of pipe fitting part of section fit closely, and the pipe fitting fixture and the pipe fitting have same after insertion
One center line, as shown in Figure 3；Assembled pipe fitting is quenched using compound isothermal hardening mode, the process conditions of quenching are：
40min is kept the temperature in the heating device that temperature is 850 DEG C, is then transferred to the nitre slot inside holding 10min that temperature is 200 DEG C；
Quenched group of holding pipe joint is tempered, the process conditions of tempering are：520 DEG C of temperature, soaking time 40min；It will tempering
Group holding pipe joint be cooled to room temperature, extract the pipe fitting part being disposed after the pipe fitting fixture, endoporus circle
Degree bounce is in 0.07mm.
Claims (5)
1. a kind of method for preventing pipe fitting parts quenching from deforming, it is characterised in that the method passes through a kind of pipe fitting fixture reality
Existing, the pipe fitting fixture is made of the integral leading portion of structure, stage casing and back segment, wherein the section of the leading portion is T-shaped
Hollow structure；The stage casing is hollow ring structure, and the side wall of the hollow ring structure uniformly opens up 4~6 rectangular recess；
The back segment is hollow cylindrical structure, lifting through-hole is opened up in the hollow cylinder body, for lifting the pipe fitting fixture；
The method includes：
It is described after insertion by the pipe fitting endoporus after pipe fitting fixture insertion carburizing to support the carburizing face of the pipe fitting
Pipe fitting fixture and the pipe fitting have same center line；Assembled pipe fitting is quenched using compound isothermal hardening mode
Fire, process conditions are：40~60min is kept the temperature in the heating device that temperature is 850 DEG C, it is 200~260 to be then transferred to temperature
DEG C 10~15min of nitre slot inside holding；Quenched group of holding pipe joint is tempered, process conditions are：Temperature 500~
540 DEG C, 30~45min of soaking time；The group holding pipe joint of tempering is cooled to room temperature, is obtained after extracting the pipe fitting fixture
The pipe fitting part being disposed.
2. a kind of method for preventing pipe fitting parts quenching from deforming according to claim 1, it is characterised in that the pipe connects
The material of fixture head is 1Cr18Ni9Ti.
3. a kind of method for preventing pipe fitting parts quenching from deforming according to claim 1, it is characterised in that the leading portion,
The stage casing is identical with the hollow parts internal diameter of the back segment.
4. a kind of method for preventing pipe fitting parts quenching from deforming according to claim 1, it is characterised in that the pipe connects
The pipe fitting endoporus that fixture head is inserted into after carburizing ensures that the outside wall surface in stage casing connects with pipe to support the carburizing face of the pipe fitting
The carburizing face of head part fits closely.
5. a kind of method for preventing pipe fitting parts quenching from deforming according to claim 1, it is characterised in that the processing
The pipe fitting inner bore of part circularity finished is beated in 0.03~0.08mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611026245.7A CN106755785B (en) | 2016-11-22 | 2016-11-22 | A method of prevent pipe fitting parts quenching from deforming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611026245.7A CN106755785B (en) | 2016-11-22 | 2016-11-22 | A method of prevent pipe fitting parts quenching from deforming |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106755785A CN106755785A (en) | 2017-05-31 |
| CN106755785B true CN106755785B (en) | 2018-09-14 |
Family
ID=58970482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611026245.7A Active CN106755785B (en) | 2016-11-22 | 2016-11-22 | A method of prevent pipe fitting parts quenching from deforming |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106755785B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107312918A (en) * | 2017-06-13 | 2017-11-03 | 安徽绿环泵业有限公司 | A kind of processing method for improving chemical pump pump shaft acid-resistant corrosion |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838731A (en) * | 2010-03-23 | 2010-09-22 | 中信重工机械股份有限公司 | Correcting quenching method for elliptical or conical deformation generated by carburized thin-wall ring gear |
| CN102409151A (en) * | 2011-11-29 | 2012-04-11 | 中国重汽集团济南动力有限公司 | Automobile drive axle ring gear heat treatment process |
| CN202187040U (en) * | 2011-07-26 | 2012-04-11 | 苏州亚太金属有限公司 | Carburizing and quenching tooling used for internally toothed annuluses and provided with deformation resistant function |
| CN102873494A (en) * | 2012-09-25 | 2013-01-16 | 内蒙古红岗机械厂 | Umbrella-type inner support clamp for annular welding of elongated cylindrical workpieces |
| CN104266016A (en) * | 2014-09-17 | 2015-01-07 | 平湖市当湖街道飞天人机械图文设计服务部 | Oil pipe joint of numerical control lathe and thermal treatment process thereof |
| CN104358777A (en) * | 2014-10-28 | 2015-02-18 | 重庆永达精密机械有限公司 | Quenching core shaft |
| WO2016084361A1 (en) * | 2014-11-25 | 2016-06-02 | 新日鐵住金株式会社 | Method for manufacturing rifled tube |
-
2016
- 2016-11-22 CN CN201611026245.7A patent/CN106755785B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838731A (en) * | 2010-03-23 | 2010-09-22 | 中信重工机械股份有限公司 | Correcting quenching method for elliptical or conical deformation generated by carburized thin-wall ring gear |
| CN202187040U (en) * | 2011-07-26 | 2012-04-11 | 苏州亚太金属有限公司 | Carburizing and quenching tooling used for internally toothed annuluses and provided with deformation resistant function |
| CN102409151A (en) * | 2011-11-29 | 2012-04-11 | 中国重汽集团济南动力有限公司 | Automobile drive axle ring gear heat treatment process |
| CN102873494A (en) * | 2012-09-25 | 2013-01-16 | 内蒙古红岗机械厂 | Umbrella-type inner support clamp for annular welding of elongated cylindrical workpieces |
| CN104266016A (en) * | 2014-09-17 | 2015-01-07 | 平湖市当湖街道飞天人机械图文设计服务部 | Oil pipe joint of numerical control lathe and thermal treatment process thereof |
| CN104358777A (en) * | 2014-10-28 | 2015-02-18 | 重庆永达精密机械有限公司 | Quenching core shaft |
| WO2016084361A1 (en) * | 2014-11-25 | 2016-06-02 | 新日鐵住金株式会社 | Method for manufacturing rifled tube |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106755785A (en) | 2017-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103331651A (en) | Technology treatment method of machining deformation of long and thin hole shaft type thin-wall part | |
| CN102888610A (en) | Thermal treatment method for internal spline gear with small modulus | |
| CN106755785B (en) | A method of prevent pipe fitting parts quenching from deforming | |
| CN103556106B (en) | A kind of preparation method of 1Cr17Ni2 alloy material high-temperature vacuum cementation zone | |
| CN104911607A (en) | Compressor 38CrMoAl steel treatment technology | |
| CN102899603A (en) | M50NiL material low-pressure vacuum carburization method | |
| CN104372148A (en) | Heat treatment process of bearing steel | |
| WO2022121565A1 (en) | High-frequency induction-based local tempering heat treatment method for high-nitrogen stainless bearing steel | |
| CN102953013A (en) | Preparation technology of die steel for hot-forging die and die-casting die | |
| CN109290754A (en) | A kind of processing technology of spline housing | |
| CN105132857B (en) | A kind of low-carbon steel part and its composite heat treating method | |
| CN106756757A (en) | The method for carburizing of deep hole camshaft | |
| CN106282767A (en) | Milling train deflector roll wear-resisting rare-earth alloy material and the heat treatment method of milling train deflector roll | |
| CN108866312A (en) | A kind of bearing heat treatment process | |
| JP2015218746A (en) | Rolling shaft | |
| CN106100182B (en) | Shaft, the assembly method of shaft, motor | |
| CN108611469A (en) | A kind of heat treatment method of support roll | |
| CN105925779A (en) | Electromagnetic heat treatment technique for shaft part | |
| CN106282502B (en) | The processing technology of miniature guide rail | |
| CN106702098A (en) | Hardening and tempering process for 40Cr steel camshaft | |
| CN105925763A (en) | Local annealing method for air conditioner bearing lining | |
| CN104152638B (en) | Micro-deformation quenching heat treatment process of cold work die steel thin workpiece | |
| CN108203759B (en) | A kind of conditioning treatment method of heavy-duty gear | |
| CN110318018A (en) | A kind of 9310 steel carbo-nitriding methods | |
| CN104962712A (en) | Heat treatment method of high-pressure-resistant low-carbon alloy steel |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee after: Chinese Hangfa Shenyang Liming Aero engine limited liability company Address before: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee before: Liming Aeroplane Engine (Group) Co., Ltd., Shenyang City |