CN108620826A - A kind of compressor crank shaft preparation method - Google Patents
A kind of compressor crank shaft preparation method Download PDFInfo
- Publication number
- CN108620826A CN108620826A CN201810440348.0A CN201810440348A CN108620826A CN 108620826 A CN108620826 A CN 108620826A CN 201810440348 A CN201810440348 A CN 201810440348A CN 108620826 A CN108620826 A CN 108620826A
- Authority
- CN
- China
- Prior art keywords
- bent axle
- forging
- blanking
- crank shaft
- compressor crank
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Abstract
The invention discloses a kind of compressor crank shaft preparation methods, include the following steps：Blanking and peeling：It selects No. 45 steel of refining, chemical analysis and mechanical performance to meet the regulation of GB699 and GB3077, and requires Mo ＜ 0.1% and through hot upset test, blanking is carried out using sawing process, and peeling is carried out to the material after blanking；Heating and forging：It using step-by-step movement heated by gas stove heat, is then forged, forging process is divided into blocking, finish-forging twice work step.The present invention has the advantages that production efficiency is high, complete automatic forging assembly line can be formed, avoid the problem of complex process and high rejection rate, it is sufficiently complex from mold manufacturing to specific production process to solve existing Production of Crankshaft technology, due also to due to the generation of stomata and dreg defect, high rejection rate in product, blank needs are manufactured simultaneously to reserve compared with margin, it is processed again through multiple working procedure, the problem of stock utilization is low, manufacturing procedure is complicated, low production efficiency.
Description
Technical field
The present invention relates to Compressor Technology field, specially a kind of compressor crank shaft preparation method.
Background technology
Bent axle is the critical component of rotating air conditioner compressor, thus it is higher to its performance requirement, to further increase pressure
Contracting engine efficiency, compressor producer, which is all made of, reduces bent axle diameter, reduces the method for contact area, improves efficiency, but its is wear-resistant
Performance is greatly lowered, and cannot be satisfied the needs of reliability, makes the method for reduction bent axle diameter, is restricted.Currently, compressor
Surface treatment of the manufacturing industry to bent axle generally uses two kinds of techniques：1, crankshaft surface carries out phosphorating treatment：Parkerized phosphatization
Film, general 1-3um, film-base junction resultant force are low, it is easy to fall off, and friction coefficient is high, wear resistance is poor, and film thickness deviation compared with
Greatly, about in 0.5-1um, in use, demand, and substance in phosphorating treatment use is cannot be satisfied, direct emission is unable to, to ring
Border has harmfulness；2, after phosphorating treatment, MOS2 coatings are sprayed：Film thickness 1-3um, film-base junction resultant force are compared with phosphatization, are not had
There is improvement, but reduces friction coefficient；MoS2 coatings start to aoxidize at 300 DEG C, and in wet condition, it is easy to it fails,
Therefore with phosphatization ratio, certain compressor efficiency is improved, but still cannot be satisfied demand.Chinese invention patent
A kind of wear-resisting compressor crank shaft and preparation method thereof is proposed in CN102628154A, although which improves the resistance to of bent axle
Mill property, but it is sufficiently complex from mold manufacturing to specific production process, due also to due to the production of stomata and dreg defect in product
It is raw, high rejection rate, while manufacturing blank needs and reserving compared with margin, then be processed through multiple working procedure, stock utilization is low, adds
Work complex procedures, low production efficiency, for this purpose, it is proposed that a kind of compressor crank shaft preparation method.
Invention content
It is mentioned above in the background art to solve the purpose of the present invention is to provide a kind of compressor crank shaft preparation method
Problem.
To achieve the above object, the present invention provides the following technical solutions：A kind of compressor crank shaft preparation method, including it is as follows
Step：
(1) blanking and peeling：No. 45 steel of refining, chemical analysis and mechanical performance are selected to meet the rule of GB699 and GB3077
It is fixed, and require Mo ＜ 0.1% and through hot upset test, blanking is carried out using sawing process, and peeling is carried out to the material after blanking；
(2) it heats and forges：Using step-by-step movement heated by gas stove heat, then forged, forging process be divided into blocking,
Finish-forging twice work step；
(3) trimming and torsion are turned：Forging trimming on crank press after finish-forging forming, is turned in torsion on machine after bent axle trimming
Turn round and turns；
(4) correction process：Bent axle after turning is corrected twice, calibration equipment hydraulic corrector, after correcting for the first time, rotation
Turn 90 ° of progress second-order corrections, the temperature of correction is maintained at 850 DEG C or so；
(5) it is heat-treated：Bent axle after correction will be heat-treated, and the bent axle of 45 steel of refining requires normalized treatment, heat treatment
Bent axle hardness afterwards is HB180-228, and grain size is 5-8 grades；
(6) it clears up：Bent axle after heat treatment checked, wherein main shaft diameter run-out tolerance, connecting rod diameter angle and heat treatment
Hardness will carry out a hundred percent inspection, and the selective examination of remaining size checks and obtains finished product after all qualified bent axle is handled by immersion oil.
Preferably, the initial forging temperature in the step (2) is 1170-1200 DEG C.
Preferably, it is 950-1050 DEG C that bent axle, which turns round the temperature turned, in the step (2).
Preferably, the underproof bent axle of run-out tolerance carries out cold alignment in the step (6) and stress relief annealing, hardness are unqualified
Bent axle re-start heat treatment.
Preferably, the underproof bent axle of connecting rod diameter angle is individually placed in the step (6), after certain batch, again
It is corrected process.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention is forged using hotdie forging press, can be into
Row multimode thorax die forging, automated production, forging precision is high, and bent axle is prepared by using forging technology, has production efficiency high
Advantage can form complete automatic forging assembly line, avoid the problem of complex process and high rejection rate, solve existing bent axle
Production technology is sufficiently complex from mold manufacturing to specific production process, due also to due to the production of stomata and dreg defect in product
It is raw, high rejection rate, while manufacturing blank needs and reserving compared with margin, then be processed through multiple working procedure, stock utilization is low, adds
The problem of work complex procedures, low production efficiency.
Specific implementation mode
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
The every other embodiment that art personnel are obtained without making creative work belongs to the model that the present invention protects
It encloses.
The present invention provides a kind of technical solution：A kind of compressor crank shaft preparation method, includes the following steps：
(1) blanking and peeling：No. 45 steel of refining, chemical analysis and mechanical performance are selected to meet the rule of GB699 and GB3077
It is fixed, and require Mo ＜ 0.1% and through hot upset test, blanking is carried out using sawing process, and peeling is carried out to the material after blanking；
(2) it heats and forges：Using step-by-step movement heated by gas stove heat, then forged, forging process be divided into blocking,
Finish-forging twice work step；
(3) trimming and torsion are turned：Forging trimming on crank press after finish-forging forming, is turned in torsion on machine after bent axle trimming
Turn round and turns；
(4) correction process：Bent axle after turning is corrected twice, calibration equipment hydraulic corrector, after correcting for the first time, rotation
Turn 90 ° of progress second-order corrections, the temperature of correction is maintained at 850 DEG C or so；
(5) it is heat-treated：Bent axle after correction will be heat-treated, and the bent axle of 45 steel of refining requires normalized treatment, heat treatment
Bent axle hardness afterwards is HB180-228, and grain size is 5-8 grades；
(6) it clears up：Bent axle after heat treatment checked, wherein main shaft diameter run-out tolerance, connecting rod diameter angle and heat treatment
Hardness will carry out a hundred percent inspection, and the selective examination of remaining size checks and obtains finished product after all qualified bent axle is handled by immersion oil.
Embodiment one：
No. 45 steel of refining are selected first, and chemical analysis and mechanical performance meet the regulation of GB699 and GB3077, and require Mo
＜ 0.1% and through hot upset test, carries out blanking, and carry out peeling to the material after blanking using sawing process；Then using step
It into formula heated by gas stove heat, is then forged, forging process is divided into blocking, finish-forging twice work step；Forging after finish-forging forming
Part trimming on crank press is turned to carry out turning round on machine and be turned after bent axle trimming in torsion；Bent axle after turning is corrected twice, correction
Equipment hydraulic corrector is rotated by 90 ° carry out second-order correction, the temperature of correction is maintained at 850 DEG C or so after correcting for the first time；
Bent axle after correction will be heat-treated, the bent axle requirement normalized treatment of 45 steel of refining, and the bent axle hardness after heat treatment is
HB180-228, grain size are 5-8 grades；Bent axle after heat treatment checked, wherein main shaft diameter run-out tolerance, connecting rod diameter angle
A hundred percent inspection, remaining size selective examination, after checking that all qualified bent axle is handled by immersion oil are carried out with heat treatment hardness
Obtain finished product.
Embodiment two：
In embodiment one, following processes are added：
Initial forging temperature in step (2) is 1170-1200 DEG C；It is 950-1050 DEG C that bent axle, which turns round the temperature turned, in step (2).
No. 45 steel of refining are selected first, and chemical analysis and mechanical performance meet the regulation of GB699 and GB3077, and require Mo
＜ 0.1% and through hot upset test, carries out blanking, and carry out peeling to the material after blanking using sawing process；Then using step
Into formula heated by gas stove heat, wherein initial forging temperature is 1170-1200 DEG C, is then forged, forging process is divided into blocking, end
Forge twice work step；Forging trimming on crank press after finish-forging forming is turned to carry out turning round on machine and be turned after bent axle trimming in torsion,
It is 950-1050 DEG C that middle bent axle, which turns round the temperature turned,；Bent axle after turning is corrected twice, calibration equipment hydraulic corrector, for the first time
After correction, it is rotated by 90 ° carry out second-order correction, the temperature of correction is maintained at 850 DEG C or so；Bent axle after correction will carry out hot place
The bent axle of reason, 45 steel of refining requires normalized treatment, and the bent axle hardness after heat treatment is HB180-228, and grain size is 5-8 grades；Heat
Treated, and bent axle is checked, wherein main shaft diameter run-out tolerance, connecting rod diameter angle and heat treatment hardness will carry out absolutely
It checks, the selective examination of remaining size, checks and obtain finished product after all qualified bent axle is handled by immersion oil.
Embodiment three：
In embodiment two, following processes are added：
The underproof bent axle of run-out tolerance carries out cold alignment and stress relief annealing in step (6), and the underproof bent axle of hardness is again
It is heat-treated.
No. 45 steel of refining are selected first, and chemical analysis and mechanical performance meet the regulation of GB699 and GB3077, and require Mo
＜ 0.1% and through hot upset test, carries out blanking, and carry out peeling to the material after blanking using sawing process；Then using step
Into formula heated by gas stove heat, wherein initial forging temperature is 1170-1200 DEG C, is then forged, forging process is divided into blocking, end
Forge twice work step；Forging trimming on crank press after finish-forging forming is turned to carry out turning round on machine and be turned after bent axle trimming in torsion,
It is 950-1050 DEG C that middle bent axle, which turns round the temperature turned,；Bent axle after turning is corrected twice, calibration equipment hydraulic corrector, for the first time
After correction, it is rotated by 90 ° carry out second-order correction, the temperature of correction is maintained at 850 DEG C or so；Bent axle after correction will carry out hot place
The bent axle of reason, 45 steel of refining requires normalized treatment, and the bent axle hardness after heat treatment is HB180-228, and grain size is 5-8 grades；Heat
Treated, and bent axle is checked, wherein main shaft diameter run-out tolerance, connecting rod diameter angle and heat treatment hardness will carry out absolutely
It checks, the selective examination of remaining size, checks and obtain finished product after all qualified bent axle is handled by immersion oil；When the underproof bent axle of run-out tolerance
Cold alignment and stress relief annealing are carried out, the underproof bent axle of hardness re-starts heat treatment.
Example IV：
In embodiment three, following processes are added：
The underproof bent axle of connecting rod diameter angle is individually placed in step (6), after certain batch, re-starts correction work
Sequence.
No. 45 steel of refining are selected first, and chemical analysis and mechanical performance meet the regulation of GB699 and GB3077, and require Mo
＜ 0.1% and through hot upset test, carries out blanking, and carry out peeling to the material after blanking using sawing process；Then using step
Into formula heated by gas stove heat, wherein initial forging temperature is 1170-1200 DEG C, is then forged, forging process is divided into blocking, end
Forge twice work step；Forging trimming on crank press after finish-forging forming is turned to carry out turning round on machine and be turned after bent axle trimming in torsion,
It is 950-1050 DEG C that middle bent axle, which turns round the temperature turned,；Bent axle after turning is corrected twice, calibration equipment hydraulic corrector, for the first time
After correction, it is rotated by 90 ° carry out second-order correction, the temperature of correction is maintained at 850 DEG C or so；Bent axle after correction will carry out hot place
The bent axle of reason, 45 steel of refining requires normalized treatment, and the bent axle hardness after heat treatment is HB180-228, and grain size is 5-8 grades；Heat
Treated, and bent axle is checked, wherein main shaft diameter run-out tolerance, connecting rod diameter angle and heat treatment hardness will carry out absolutely
It checks, the selective examination of remaining size, checks and obtain finished product after all qualified bent axle is handled by immersion oil；When the underproof bent axle of run-out tolerance
Cold alignment and stress relief annealing are carried out, the underproof bent axle of hardness re-starts heat treatment；When the underproof song of connecting rod diameter angle
Axis is individually placed, after certain batch, re-starts correcting process.
The present invention is forged using hotdie forging press, can carry out multimode thorax die forging, automated production, forging precision
Height prepares bent axle by using forging technology, has the advantages that production efficiency is high, can form complete automatic forging flowing water
Line avoids the problem of complex process and high rejection rate, solves existing Production of Crankshaft technology from mold manufacturing to specific production
Process is sufficiently complex, due also to due to the generation of stomata and dreg defect, high rejection rate in product, while manufacturing blank needs and staying
Go out compared with margin, then is processed through multiple working procedure, the problem of stock utilization is low, manufacturing procedure is complicated, low production efficiency.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of compressor crank shaft preparation method, it is characterised in that：Include the following steps：
(1) blanking and peeling：No. 45 steel of refining, chemical analysis and mechanical performance are selected to meet the regulation of GB699 and GB3077, and
It is required that Mo ＜ 0.1% and through hot upset test, carry out blanking, and carry out peeling to the material after blanking using sawing process；
(2) it heats and forges：It using step-by-step movement heated by gas stove heat, is then forged, forging process is divided into blocking, finish-forging
Twice work step；
(3) trimming and torsion are turned：Forging trimming on crank press after finish-forging forming, turns in torsion after bent axle trimming and is carried out on machine
Torsion is turned；
(4) correction process：Bent axle after turning is corrected twice, calibration equipment hydraulic corrector, after correcting for the first time, rotation
90 ° of progress second-order corrections, the temperature of correction are maintained at 850 DEG C or so；
(5) it is heat-treated：Bent axle after correction will be heat-treated, and the bent axle of 45 steel of refining requires normalized treatment, after heat treatment
Bent axle hardness is HB180-228, and grain size is 5-8 grades；
(6) it clears up：Bent axle after heat treatment checked, wherein main shaft diameter run-out tolerance, connecting rod diameter angle and heat treatment hardness
A hundred percent inspection is carried out, the selective examination of remaining size checks and obtains finished product after all qualified bent axle is handled by immersion oil.
2. a kind of compressor crank shaft preparation method according to claim 1, it is characterised in that：Beginning in the step (2)
It is 1170-1200 DEG C to forge temperature.
3. a kind of compressor crank shaft preparation method according to claim 1, it is characterised in that：Bent axle in the step (2)
It is 950-1050 DEG C to turn round the temperature turned.
4. a kind of compressor crank shaft preparation method according to claim 1, it is characterised in that：Run-out tolerance in the step (6)
Underproof bent axle carries out cold alignment and stress relief annealing, the underproof bent axle of hardness re-start heat treatment.
5. a kind of compressor crank shaft preparation method according to claim 1, it is characterised in that：Connecting rod in the step (6)
The underproof bent axle of diameter angle is individually placed, after certain batch, re-starts correcting process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810440348.0A CN108620826A (en) | 2018-05-10 | 2018-05-10 | A kind of compressor crank shaft preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810440348.0A CN108620826A (en) | 2018-05-10 | 2018-05-10 | A kind of compressor crank shaft preparation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108620826A true CN108620826A (en) | 2018-10-09 |
Family
ID=63692207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810440348.0A Pending CN108620826A (en) | 2018-05-10 | 2018-05-10 | A kind of compressor crank shaft preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108620826A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115446554A (en) * | 2022-10-09 | 2022-12-09 | 安徽扬山联合精密技术有限公司 | Compressor crankshaft production process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101823116A (en) * | 2010-05-11 | 2010-09-08 | 林素伟 | Forging process for engine crankshaft of excavator |
| CN102451876A (en) * | 2010-10-22 | 2012-05-16 | 株式会社梅塔拉特 | Manufacturing method of crankshaft and crankshaft manufactured through the same |
| CN102989983A (en) * | 2012-08-22 | 2013-03-27 | 昌利锻造有限公司 | Forging method of automobile engine crankshaft |
| WO2017089977A1 (en) * | 2015-11-24 | 2017-06-01 | Bharat Forge Limited | A forged crankshaft and a process of making it |
-
2018
- 2018-05-10 CN CN201810440348.0A patent/CN108620826A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101823116A (en) * | 2010-05-11 | 2010-09-08 | 林素伟 | Forging process for engine crankshaft of excavator |
| CN102451876A (en) * | 2010-10-22 | 2012-05-16 | 株式会社梅塔拉特 | Manufacturing method of crankshaft and crankshaft manufactured through the same |
| CN102989983A (en) * | 2012-08-22 | 2013-03-27 | 昌利锻造有限公司 | Forging method of automobile engine crankshaft |
| WO2017089977A1 (en) * | 2015-11-24 | 2017-06-01 | Bharat Forge Limited | A forged crankshaft and a process of making it |
Non-Patent Citations (1)
| Title |
|---|
| 付翔: "曲轴锻造、扭拐工艺的研究和实践", 《锻压技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115446554A (en) * | 2022-10-09 | 2022-12-09 | 安徽扬山联合精密技术有限公司 | Compressor crankshaft production process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109822024B (en) | Forging and heat treatment process of 750 ℃ high-temperature alloy forging | |
| EP2703100B1 (en) | Fabrication method for stepped forged material | |
| JPWO2005075121A1 (en) | Cold-finished seamless steel pipe | |
| CN107283122A (en) | A kind of manufacturing process of automobile hollow semiaxis | |
| CN105057988A (en) | Method for preparing turbine sealing rings through alloy wire rod | |
| CN102699104A (en) | Preparation method of G20CrNiMo bearing steel pipe | |
| CN108672624A (en) | A kind of nickel base superalloy ring forging method | |
| CN108620826A (en) | A kind of compressor crank shaft preparation method | |
| CN106826142B (en) | The manufacturing method of automobile gearbox jackshaft | |
| CN112935173A (en) | Bearing sleeve forge piece die forging blank making and die ring rolling forming process | |
| CN107486524A (en) | A kind of preparation method of titanium alloy cake material | |
| CN114472776A (en) | Die forging blank making and die ring rolling forming process for high-neck flange forging for wind tower | |
| CN111451425B (en) | Forging method for controlling white point defect | |
| CN107716587A (en) | A kind of processing method of thin-wall titanium alloy pipe | |
| CN106001343A (en) | Free forging process for large hoisting ring | |
| CN107322250A (en) | A kind of preparation method of gear ring | |
| CN104791368A (en) | Separable crankshaft processing process | |
| CN114317932B (en) | Heat treatment method for obtaining balanced state tissue of thick-wall high-cylinder ring forging | |
| CN104057250A (en) | Processing technology for guaranteeing assembling interchangeability of inner and outer rings of revolving support | |
| CN111715817B (en) | Method for improving rotary forging yield of titanium alloy wire | |
| CN112589020A (en) | Waspaloy thin-wall ring forging forming method | |
| CN105755407A (en) | Correction method for deformation of aluminum alloy processing piece | |
| CN107497988A (en) | A kind of processing method of high temperature alloy Step Shaft | |
| CN105935738B (en) | A kind of forging technology of ledeburite steel shaft | |
| CN108817288A (en) | A kind of 23Co14Ni12Cr3Mo steel forgings forging forming method with high-intensity and high-tenacity |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181009 |
|
| WD01 | Invention patent application deemed withdrawn after publication |