CN110408750A - A kind of turbocharger middle body surface de-stress processing method - Google Patents
A kind of turbocharger middle body surface de-stress processing method Download PDFInfo
- Publication number
- CN110408750A CN110408750A CN201910669508.3A CN201910669508A CN110408750A CN 110408750 A CN110408750 A CN 110408750A CN 201910669508 A CN201910669508 A CN 201910669508A CN 110408750 A CN110408750 A CN 110408750A
- Authority
- CN
- China
- Prior art keywords
- temperature
- stress
- heating
- middle body
- body surface
- 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
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
- C21D1/26—Methods of annealing
-
- 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
- C21D10/00—Modifying the physical properties by methods other than heat treatment or deformation
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
Landscapes
- 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)
- Control Of Heat Treatment Processes (AREA)
Abstract
The invention discloses a kind of turbocharger middle body surface de-stress processing methods, take intermediate, and cold rolling is carried out to intermediate, so that the surface of intermediate forms cloudy surface, multiple tracks rolling is carried out to intermediate again, it will be placed in aging furnace by the intermediate of multiple tracks rolling, destressing heating temperature is 1500-1680 DEG C, and the rate heating of 65 DEG C/min, it is warming up to 1800 DEG C, stop heating, soaking time is 1.2-2.3h, it is cooled to room temperature wait come out of the stove, the intermediate cooled down is subjected to homogenization heat treatment again, carry out 3 coggings forging, it carries out pulling shaping for the first time and beats pincers handle, a kind of turbocharger middle body surface de-stress processing method of the present invention, by cold rolling, keep intermediate surface superior, there is no the points that hot-strip usually occurs, indentation oxidation The defects of iron sheet, in favor of the processing of next procedure, while passing through multiple heat ageing treatment, keeps intermediate body stress removal efficiency higher, retain the metallic character of intermediate, improves service performance.
Description
Technical field
The invention belongs to preparation process field, in particular to a kind of turbocharger middle body surface de-stress processing side
Method.
Background technique
Middle case is bearing housing, and turbine wheel shaft, floating bearing, thrust bearing, sleeve seal etc. shaft member are all in this
Face, major function be just to maintain turbine, impeller, axis stablize high speed rotation, and traditional intermediate processing when, surface quality
Have the defects that certain, while going the effect of de-stress poor, for this purpose, it is proposed that a kind of turbocharger middle body surface is removed
Stress processing method.
Summary of the invention
The main purpose of the present invention is to provide a kind of turbocharger middle body surface de-stress processing method, Ke Yiyou
Effect solves the problems in background technique.
To achieve the above object, the technical scheme adopted by the invention is as follows:
A kind of turbocharger middle body surface de-stress processing method, the preparation process the following steps are included:
S1: taking intermediate, and carries out cold rolling to intermediate so that the surface of intermediate forms cloudy surface, then to intermediate into
The rolling of row multiple tracks；
S2: will be placed in aging furnace by the intermediate of multiple tracks rolling, and destressing heating temperature is 1500-1680 DEG C, and
The rate heating of 65 DEG C/min, is warming up to 1800 DEG C, stops heating, and soaking time 1.2-2.3h is cooled to room temperature wait go out
Furnace；
S3: carrying out homogenization heat treatment for the intermediate cooled down again, carries out 3 coggings forging, carries out first time pulling
Pincers handle is beaten in shaping, then carries out heating furnace solution treatment, and is carried out second and pulled out, then carry out third time pulling；
S4: low-temperature annealing processing is carried out to pulling treated intermediate, the annealed sheet temperature of low-temperature annealing is 800-980
DEG C, it is cooled to room temperature；
S5: aging strengthening model is carried out to the intermediate being cooled to room temperature, when being vibrated immediately after the completion of aging strengthening model
Effect processing, the final stress for removing intermediate.
Preferably, mill speed is 50-80m/min in S1, and tension difference is controlled in 15-45kN.
Preferably, deformation amount controlling is pulled out in S3 for the third time in 12%-38%, which is completed with two fire time,
In the first fire 800 DEG C solution treatment 1.2h, second 1300 DEG C of solution treatment 1.5h of fire time.
Preferably, furnace duration is transferred to after intermediate aging strengthening model at once no more than 18s, to be not more than the liter of 45 DEG C/h
Furnace temperature is raised to 1500-1600 DEG C by warm speed, is kept the temperature 1.2-2.6 hours, is not cooled down finally and come out of the stove.
Preferably, vibration stress relief treatment is that intermediate is placed on high-temperature resistant rubber pad immediately after coming out of the stove in S5, duration
25-30min。
Compared with prior art, the invention has the following beneficial effects: a kind of turbocharger middle body surfaces except answering
Power processing method keeps intermediate surface superior by cold rolling, the point that usually occurs there is no hot-strip, indentation oxygen
The defects of changing iron sheet in favor of the processing of next procedure, while passing through multiple heat ageing treatment, make intermediate body stress removal efficiency
It is higher, retain the metallic character of intermediate, improves service performance.
Specific embodiment
To be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below with reference to
Specific embodiment, the present invention is further explained.
A kind of turbocharger middle casing takes intermediate, and carry out cold rolling to intermediate, so that intermediate in the preparation
The surface of body forms cloudy surface, then carries out multiple tracks rolling, mill speed 50-80m/min to intermediate, and tension difference is controlled in 15-
45kN；It being placed in aging furnace by the intermediate of multiple tracks rolling, destressing heating temperature is 1500-1680 DEG C, and 65 DEG C/
The rate of min heats up, and is warming up to 1800 DEG C, stops heating, and soaking time 1.2-2.3h is cooled to room temperature wait come out of the stove, will
Cooling intermediate carries out homogenization heat treatment again, carries out 3 coggings forging, carries out pulling shaping for the first time and beats pincers handle, then
Heating furnace solution treatment is carried out, and carries out second and pulls out, then carry out third time pulling, third time pulls out deformation amount controlling and exists
12%-38%, the pulling process are completed with two fire time, wherein 800 DEG C of solution treatment 1.2h of the first fire time, the second 1300 DEG C of fire time
Solution treatment 1.5h carries out low-temperature annealing processing to pulling treated intermediate, and the annealed sheet temperature of low-temperature annealing is 800-980
DEG C, it is cooled to room temperature, aging strengthening model is carried out to the intermediate being cooled to room temperature, is vibrated immediately after the completion of aging strengthening model
Ageing treatment is transferred to furnace duration after intermediate aging strengthening model no more than 18s, to be not more than the heating rate of 45 DEG C/h at once
Furnace temperature is raised to 1500-1600 DEG C, 1.2-2.6 hour is kept the temperature, does not cool down finally and come out of the stove, vibration stress relief treatment for after coming out of the stove immediately
Intermediate is placed on high-temperature resistant rubber pad, duration 25-30min, the final stress for removing intermediate.
Embodiment 1
Intermediate is taken, and cold rolling is carried out to intermediate, so that the surface of intermediate forms cloudy surface, then intermediate is carried out more
Road rolling, mill speed 50m/min, tension difference are controlled in 15kN；It will be placed in aging furnace by the intermediate of multiple tracks rolling,
Destressing heating temperature is 1500 DEG C, and the rate heating of 65 DEG C/min, is warming up to 1800 DEG C, stops heating, soaking time
It for 1.2h, is cooled to room temperature wait come out of the stove, the intermediate cooled down is subjected to homogenization heat treatment again, carry out 3 coggings forging, into
Pincers handle is beaten in row pulling shaping for the first time, then carries out heating furnace solution treatment, and is carried out second and pulled out, then is carried out third time and pulled out
Long, third time pulls out deformation amount controlling 12%, which is completed with two fire time, wherein at first 800 DEG C of solid solutions of fire time
1.2h, second fire time 1300 DEG C of solution treatment 1.5h are managed, treated that intermediate carries out low-temperature annealing processing to pulling, and low temperature moves back
The annealed sheet temperature of fire is 800-980 DEG C, is cooled to room temperature, and carries out aging strengthening model, timeliness heat to the intermediate being cooled to room temperature
Vibration stress relief treatment is carried out immediately after the completion of processing, is transferred to furnace duration after intermediate aging strengthening model at once and is not more than 18s, with
Furnace temperature is raised to 1500 DEG C by the heating rate no more than 45 DEG C/h, is kept the temperature 1.2 hours, is not cooled down finally and come out of the stove, at oscillating aging
Reason is that intermediate is placed on high-temperature resistant rubber pad immediately after coming out of the stove, duration 25min, the final stress for removing intermediate；
Through detecting, middle casing surface stress made from middle casing surface stress 25N/mm obtained is decreased obviously；It will
Middle casing obtained is respectively placed in acid solution and alkaline solution that ph value is 5 and 9, is taken out within two hours, is wiped solution, in
Between the corrosion-free phenomenon of surface of shell, merging before be placed in after it is identical in quality.
Embodiment 2
Intermediate is taken, and cold rolling is carried out to intermediate, so that the surface of intermediate forms cloudy surface, then intermediate is carried out more
Road rolling, mill speed 80m/min, tension difference are controlled in 45kN；It will be placed in aging furnace by the intermediate of multiple tracks rolling,
Destressing heating temperature is 1680 DEG C, and the rate heating of 65 DEG C/min, is warming up to 1800 DEG C, stops heating, soaking time
It for 2.3h, is cooled to room temperature wait come out of the stove, the intermediate cooled down is subjected to homogenization heat treatment again, carry out 3 coggings forging, into
Pincers handle is beaten in row pulling shaping for the first time, then carries out heating furnace solution treatment, and is carried out second and pulled out, then is carried out third time and pulled out
Long, third time pulls out deformation amount controlling 38%, which is completed with two fire time, wherein at first 800 DEG C of solid solutions of fire time
1.2h, second fire time 1300 DEG C of solution treatment 1.5h are managed, treated that intermediate carries out low-temperature annealing processing to pulling, and low temperature moves back
The annealed sheet temperature of fire is 980 DEG C, is cooled to room temperature, and carries out aging strengthening model, aging strengthening model to the intermediate being cooled to room temperature
It carries out vibration stress relief treatment immediately after the completion, is transferred to furnace duration after intermediate aging strengthening model at once no more than 18s, with little
Furnace temperature is raised to 1600 DEG C in the heating rate of 45 DEG C/h, 2.6 hours is kept the temperature, does not cool down finally and come out of the stove, vibration stress relief treatment is
Intermediate is placed on high-temperature resistant rubber pad immediately after coming out of the stove, duration 25-30min, the final stress for removing intermediate；
Through detecting, middle casing surface stress made from middle casing surface stress 36N/mm obtained is decreased obviously；It will
Middle casing obtained is respectively placed in acid solution and alkaline solution that ph value is 4 and 10, is taken out within two hours, is wiped solution,
The corrosion-free phenomenon in middle casing surface, merging before be placed in after it is identical in quality.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (5)
1. a kind of turbocharger middle body surface de-stress processing method, which is characterized in that the preparation process includes following step
It is rapid:
S1: taking intermediate, and carry out cold rolling to intermediate, so that the surface of intermediate forms cloudy surface, then carries out to intermediate more
Road rolling；
S2: it will be placed in aging furnace by the intermediate of multiple tracks rolling, destressing heating temperature is 1500-1680 DEG C, and 65
DEG C/heating of the rate of min, 1800 DEG C are warming up to, heating is stopped, soaking time 1.2-2.3h is cooled to room temperature wait come out of the stove；
S3: carrying out homogenization heat treatment for the intermediate cooled down again, carries out 3 coggings forging, carries out pulling shaping for the first time
Pincers handle is beaten, heating furnace solution treatment is then carried out, and carries out second and pulls out, then carry out third time pulling；
S4: low-temperature annealing processing is carried out to pulling treated intermediate, the annealed sheet temperature of low-temperature annealing is 800-980 DEG C, cold
But to room temperature；
S5: aging strengthening model is carried out to the intermediate being cooled to room temperature, is carried out at oscillating aging immediately after the completion of aging strengthening model
Reason, the final stress for removing intermediate.
2. a kind of turbocharger middle body surface de-stress processing method according to claim 1, it is characterised in that: S1
Middle mill speed is 50-80m/min, and tension difference is controlled in 15-45kN.
3. a kind of turbocharger middle body surface de-stress processing method according to claim 1, it is characterised in that: S3
Middle third time pulling deformation amount controlling is completed in 12%-38%, the pulling process with two fire time, wherein 800 DEG C of the first fire time is solid
Molten processing 1.2h, second 1300 DEG C of solution treatment 1.5h of fire time.
4. a kind of turbocharger middle body surface de-stress processing method according to claim 1, it is characterised in that: in
Furnace duration is transferred to after mesosome aging strengthening model at once no more than 18s, is raised to furnace temperature with the heating rate no more than 45 DEG C/h
1500-1600 DEG C, 1.2-2.6 hours are kept the temperature, does not cool down finally and comes out of the stove.
5. a kind of turbocharger middle body surface de-stress processing method according to claim 1, it is characterised in that: S5
Middle vibration stress relief treatment is that intermediate is placed on high-temperature resistant rubber pad immediately after coming out of the stove, duration 25-30min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910669508.3A CN110408750A (en) | 2019-07-24 | 2019-07-24 | A kind of turbocharger middle body surface de-stress processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910669508.3A CN110408750A (en) | 2019-07-24 | 2019-07-24 | A kind of turbocharger middle body surface de-stress processing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110408750A true CN110408750A (en) | 2019-11-05 |
Family
ID=68362660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910669508.3A Pending CN110408750A (en) | 2019-07-24 | 2019-07-24 | A kind of turbocharger middle body surface de-stress processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110408750A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206158850U (en) * | 2016-10-11 | 2017-05-10 | 嘉兴博瑞涡轮增压技术有限公司 | Turbo charger's middle casing |
| CN108927492A (en) * | 2018-08-16 | 2018-12-04 | 全椒县全动机械有限公司 | A kind of cast steel intermediate product of diesel engine manufacturing process |
| CN208220888U (en) * | 2018-03-05 | 2018-12-11 | 无锡市臻尚机械有限公司 | Turbocharger middle body free of cleaning |
| CN108998644A (en) * | 2018-09-25 | 2018-12-14 | 株洲市九洲传动机械设备有限公司 | A kind of aging treatment method of gear housing |
-
2019
- 2019-07-24 CN CN201910669508.3A patent/CN110408750A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206158850U (en) * | 2016-10-11 | 2017-05-10 | 嘉兴博瑞涡轮增压技术有限公司 | Turbo charger's middle casing |
| CN208220888U (en) * | 2018-03-05 | 2018-12-11 | 无锡市臻尚机械有限公司 | Turbocharger middle body free of cleaning |
| CN108927492A (en) * | 2018-08-16 | 2018-12-04 | 全椒县全动机械有限公司 | A kind of cast steel intermediate product of diesel engine manufacturing process |
| CN108998644A (en) * | 2018-09-25 | 2018-12-14 | 株洲市九洲传动机械设备有限公司 | A kind of aging treatment method of gear housing |
Non-Patent Citations (2)
| Title |
|---|
| 杨莉等: "《工程材料及成形技术基础》", 30 April 2016, 西安电子科技大学出版社 * |
| 骆清国等: "《车用动力装置》", 31 December 2005, 兵器工业出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102380565B (en) | Method for forging large forging | |
| CN104889308A (en) | Method for forging wind power generation spindle | |
| CN108202088A (en) | A kind of processing method of small dimension titanium or titanium alloy Bar Wire Product | |
| CN103966411A (en) | Manufacturing method for medium-carbon cold forging steel rods and wires | |
| CN101474743A (en) | Method for producing alloy plastic die steel using direct hot delivery and hot charging technique | |
| CN113042565A (en) | High-quality GH2132 alloy bar for fasteners and production method thereof | |
| CN110923571A (en) | Manufacturing method of wind power rotary gear ring forge piece of fan | |
| CN105567914A (en) | Novel process of heat treatment after forging | |
| CN112359300B (en) | Method for reducing quenching residual stress of die forging | |
| CN109234654A (en) | A kind of processing technology improving tab copper strips buckling performance | |
| CN110548827B (en) | Forging method for improving yield of nickel-based corrosion-resistant alloy forging stock | |
| CN115852119A (en) | A kind of H13 ingot forging hot work die steel and production method thereof | |
| CN110408750A (en) | A kind of turbocharger middle body surface de-stress processing method | |
| CN112981288B (en) | Annealing method of aluminum alloy ingot | |
| CN109628715A (en) | Cooling method for improving quality of steel coil | |
| CN101086056B (en) | Quick annealing method for titanium seamless pipe | |
| CN101914671B (en) | Steel ingot heating energy-saving method | |
| CN111525750B (en) | Low-pressure cast aluminum iron core heating technology for cast aluminum rotor of three-phase asynchronous high-voltage motor | |
| CN110616299A (en) | Production method of high-strength steel | |
| CN104975146B (en) | A kind of T91 steel continuous casting square billet directly send dress technique | |
| CN115254991A (en) | Preparation method of high-drawability cold-heading carbon structural steel | |
| CN114453430A (en) | Control method for preventing high magnetic induction oriented silicon steel cold rolling strip breakage | |
| CN112080627A (en) | Recrystallization annealing process of GCr15 bearing steel wire well type annealing furnace | |
| CN116607030B (en) | Titanium alloy bar forging and rolling combined preparation method added with returned scraps Ti6Al4VELI | |
| CN110918643A (en) | Method for improving equiaxial crystal zone ratio of steel bar hot rolled material finished product center |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191105 |
|
| RJ01 | Rejection of invention patent application after publication |