CN107350737A - A kind of preparation technology of high intensity plug valve for plunger pump - Google Patents
A kind of preparation technology of high intensity plug valve for plunger pump Download PDFInfo
- Publication number
- CN107350737A CN107350737A CN201610305922.2A CN201610305922A CN107350737A CN 107350737 A CN107350737 A CN 107350737A CN 201610305922 A CN201610305922 A CN 201610305922A CN 107350737 A CN107350737 A CN 107350737A
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- CN
- China
- Prior art keywords
- embryo material
- plug valve
- carried out
- plunger pump
- high intensity
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- 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.)
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Classifications
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- 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
- B23P15/001—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass valves or valve housings
Abstract
The present invention discloses a kind of preparation technology of the high intensity plug valve for plunger pump, comprises the following steps：Lower embryo material, and embryo material is calcined in intermediate frequency furnace；Go out embryo material and using pneumatic hammer to just forging, descale；Finish-forging is carried out using friction press to embryo material, trimming then is carried out to embryo material；Embryo material is sent into car type furnace after trimming and carries out normalized treatment, bead；Finished product is obtained after the assay was approved to the rough turn processing of embryo material progress, finishing, defectoscope.Pin of the present invention is 0.65wt%~0.85wt% from manganese content, S content≤0.025%, the 42CrMo round steel of P content≤0.025% is as embryo material, and the technique such as just forging, finish-forging, flanging, normalizing, shot-peening, quenched is carried out successively for its characteristic, plug valve tensile strength >=800MPa, yield strength >=750MPa made from this processing technology, deviation ratio≤0.01% of processing, material elongation percentage >=15%, the contraction percentage of area to≤40%.
Description
Technical field
The invention belongs to parts machining technical field, and in particular to a kind of preparation of high intensity plug valve for plunger pump
Technique.
Background technology
Plunger pump is an important device of hydraulic system, and it is moved back and forth by plunger in cylinder body, holds seal operation
The volume of chamber changes to realize oil suction, force feed, and plunger will move back and forth in cylinder body, and therefore, its amount of exercise is very
Greatly, therefore, plunger pump is particularly the plunger pump for being used for shale gas exploitation, is had because working strength is higher, inside and outside pump larger
Pressure difference, to prevent the liquid leakage in the pump housing, it is desirable to the intensity of each parts on the pump housing will height, with pump body
Fitness to get well, plug valve also requires that its intensity and fitness as the important accessory on plunger pump；At present, city
Existing plug valve uses common steel, common preparation technology on field, and resulting body strength is only capable of reaching
100MPa or so, and the contraction percentage of area is higher, it is inconsistent with pre-set dimension easily to cause to process member, is assembling
It can not well coordinate with the pump housing in journey, reduce fitness, exist in the lid course of work with plunges pump body connectivity not
The problem of good and sealing difference, influence the operating efficiency of plunger pump.
The content of the invention
Goal of the invention：Present invention aims in view of the shortcomings of the prior art, there is provided it is a kind of process precision it is high be used for post
Fill in the preparation technology of the high intensity plug valve of pump.
Technical scheme：A kind of preparation technology of high intensity plug valve for plunger pump of the present invention, including following step
Suddenly：
(1) embryo material under, and 1150~1250 DEG C of calcinings are heated to embryo material in intermediate frequency furnace, heating rhythm control exists
20~30S/ parts；
(2) go out embryo material and high temperature embryo material is carried out just to forge using the pneumatic hammer of 200~300 tonnages, descale, control
Beat processed is 15~25S/ parts, and ensures that embryo material temperature is higher than 900 DEG C after the completion of this processing procedure；
(3) finish-forging is carried out using the friction press of 800~1200 tonnages to the embryo material after scale removal, controls beat
For 20~30S/ parts；Embryo material is cooled to 160~200 DEG C, trimming is then carried out to embryo material using press；
(4) embryo material is sent into car type furnace after trimming, is heated to 850~950 DEG C, stopped 2.5~5h and carry out normalized treatment,
Then bead is carried out, single-nozzle ball blast amount is 45~60Kg/min, and velocity of shot is 65~80m/s；
(5) after bead, rough turn processing is carried out to embryo material, the overall profile of plug valve is obtained, to the plug valve
Risen again after quenching to 550~650 DEG C, and be incubated 2.5~5h and carry out modifier treatment；Then by finishing, flaw detection machine examination
Test it is qualified after obtain finished product.
Preferably, I improves the bulk strength of plug valve, and the embryo material is 42CrMo round steel, and wherein Mn contents are 0.65
Wt%~0.85wt%, S content≤0.025wt%, P content≤0.025wt%.
Preferably, press described in step (3) is 60~65 tonnage levels, and it is 15~30S/ parts to control beat.
Preferably, it is described it is rough turn plus during the lathe tool speed of mainshaft be 800~1000r/min, enter part speed be 0.2~0.6
mm/s；
Preferably, the finishing includes smart car technique, and the lathe tool speed of mainshaft is 300~500r/min in smart car technical process,
It is 0.1~0.5mm/s to enter part speed.
Beneficial effect：(1) pin of the present invention is 0.65wt%~0.85wt% from manganese content, S contents≤0.025%, P
The 42CrMo round steel of content≤0.025% carries out just forging, finish-forging, flanging, just successively as embryo material, and for its characteristic
The technique such as fire, shot-peening, quenched, in first forging process, temperature calcination 20~30 second of the every embryo material at 1150~1250 DEG C,
The self-defect of material is effectively eliminated, ensures to enter finish-forging technique when the embryo material temperature after just forging is higher than 900 DEG C, this
The forging pressure and forging beat that it is appropriate that temperature parameter is arranged in pairs or groups, the selected of this process conditions can preferably improve the strong of material
Degree；(2) can effectively be assisted according to the property settings normalizing of finish-forging material, shot-peening and the technological parameter such as quenched in the present invention
Help and improve material elongation percentage to 15%, the reduction contraction percentage of area to 40%, effectively prevent material from occurring in process
Complete the problem of part differs increasing with pre-set dimension；(3) present invention sets rough turn, thin Vehicle Processing work according to material property
The parameter of skill, the mismachining tolerance of process kind is effectively reduced, improves processing precision, the deviation of the processing of this programme
Rate≤0.01%；(4) plug valve tensile strength >=800MPa, yield strength >=750MPa made from this processing technology.
Embodiment
Technical solution of the present invention is described in detail below by specific embodiment, but protection scope of the present invention not office
It is limited to the embodiment.
Embodiment 1：A kind of preparation technology of high intensity plug valve for plunger pump, comprises the following steps：
(1) embryo material under, the embryo material are 42CrMo round steel, and wherein Mn contents are 0.80wt%, S contents 0.020
Wt%, P content 0.018wt%, and 1800 DEG C of calcinings are heated to embryo material in intermediate frequency furnace, heating rhythm control exists
20S/ parts；
(2) go out embryo material and high temperature embryo material is carried out just to forge using the pneumatic hammer of 250 tonnages, descale, control section
Clap as 20S/ parts, and embryo material temperature is higher than 900 DEG C after the completion of ensureing this processing procedure；
(3) finish-forging is carried out using the friction press of 1000 tonnages to the embryo material after scale removal, controls the beat to be
20S/ parts；Embryo material is cooled to 160~165 DEG C, trimming is then carried out to embryo material using press, the press is 63 tons
Position level, it is 20S/ parts to control beat；
(4) embryo material is sent into car type furnace after trimming, is heated to 900 DEG C, stopped 3h and carry out normalized treatment, Ran Houjin
Row bead, single-nozzle ball blast amount are 55Kg/min, velocity of shot 75m/s；
(5) after bead, carry out rough turn processing to embryo material, it is described rough turn plus during the lathe tool speed of mainshaft be 900
R/min, it is 0.45mm/s to enter part speed, obtains the overall profile of plug valve, to the plug valve quench after rise again to
600 DEG C of progress modifier treatment；Then finished product, smart car technical process are obtained after the assay was approved by smart car technique, defectoscope
The middle lathe tool speed of mainshaft is 450r/min, and it is 0.25mm/s to enter part speed.
Embodiment 2：A kind of preparation technology of high intensity plug valve for plunger pump, comprises the following steps：
(1) embryo material under, the embryo material are 42CrMo round steel, and wherein Mn contents are 0.65wt%, S content 0.018wt%,
P content 0.022wt%, and 1150 DEG C of calcinings are heated to embryo material in intermediate frequency furnace, heating rhythm control is in 25S/ parts；
(2) go out embryo material and high temperature embryo material is carried out just to forge using the pneumatic hammer of 200 tonnages, descale, control section
Clap as 15S/ parts, and embryo material temperature is higher than 900 DEG C after the completion of ensureing this processing procedure；
(3) finish-forging is carried out using the friction press of 800 tonnages to the embryo material after scale removal, it is 25 to control beat
S/ parts；Embryo material is cooled to 180~185 DEG C, trimming is then carried out to embryo material using press, the press is 60 tonnages
Level, it is 15S/ parts to control beat；
(4) embryo material is sent into car type furnace after trimming, is heated to 850 DEG C, stopped 2.5h and carry out normalized treatment, then
Bead is carried out, single-nozzle ball blast amount is 45Kg/min, velocity of shot 65m/s；
(5) after bead, carry out rough turn processing to embryo material, it is described rough turn plus during the lathe tool speed of mainshaft be 800
R/min, it is 0.2mm/s to enter part speed, obtains the overall profile of plug valve, to the plug valve quench after rise again to
Modifier treatment is carried out at 550 DEG C；Then finished product, smart car technique mistake are obtained after the assay was approved by smart car technique, defectoscope
The lathe tool speed of mainshaft is 300r/min in journey, and it is 0.1mm/s to enter part speed.
Embodiment 3：A kind of preparation technology of high intensity plug valve for plunger pump, comprises the following steps：
(1) embryo material under, the embryo material are 42CrMo round steel, and wherein Mn contents are 0.85wt%, S content 0.025wt%,
P content 0.018wt%, and 1250 DEG C of calcinings are heated to embryo material in intermediate frequency furnace, heating rhythm control is in 30S/ parts；
(2) go out embryo material and high temperature embryo material is carried out just to forge using the pneumatic hammer of 300 tonnages, descale, control section
Clap as 25S/ parts, and embryo material temperature is higher than 900 DEG C after the completion of ensureing this processing procedure；
(3) finish-forging is carried out using the friction press of 1200 tonnages to the embryo material after scale removal, controls the beat to be
30S/ parts；Embryo material is cooled to 190~200 DEG C, trimming is then carried out to embryo material using press, the press is 65 tons
Position level, it is 30S/ parts to control beat；
(4) embryo material is sent into car type furnace after trimming, is heated to 950 DEG C, stopped 5h and carry out normalized treatment, Ran Houjin
Row bead, single-nozzle ball blast amount are 60Kg/min, velocity of shot 80m/s；
(5) after bead, carry out rough turn processing to embryo material, it is described rough turn plus during the lathe tool speed of mainshaft be 1000
R/min, it is 0.6mm/s to enter part speed, obtains the overall profile of plug valve, to the plug valve quench after rise again to
650 DEG C of progress modifier treatment；Then finished product, smart car technical process are obtained after the assay was approved by smart car technique, defectoscope
The middle lathe tool speed of mainshaft is 500r/min, and it is 0.5mm/s to enter part speed.
The correction data of the properties of product of the embodiment of the present invention 1~3 and existing product performance is as shown in table 1；
The properties of product of the embodiment 1~3 of table 1 and the correction data of existing product performance
Claims (5)
1. the preparation technology of a kind of high intensity plug valve for plunger pump, it is characterised in that comprise the following steps：
(1) embryo material under, and 1150~1250 DEG C of calcinings are heated to embryo material in intermediate frequency furnace, heating rhythm control is in 20~30S/ parts；
(2) go out embryo material and high temperature embryo material is carried out just to forge using the pneumatic hammer of 200~300 tonnages, descale, it is 15~25S/ parts control beat, and ensures that embryo material temperature is higher than 900 DEG C after the completion of this processing procedure；
(3) finish-forging is carried out using the friction press of 800~1200 tonnages to the embryo material after scale removal, it is 20~30S/ parts to control beat；Embryo material is cooled to 160~200 DEG C, trimming is then carried out to embryo material using press；
(4) embryo material is sent into car type furnace after trimming, is heated to 850~950 DEG C, stopped 2.5~5h and carry out normalized treatment, then carry out bead, single-nozzle ball blast amount is 45~60Kg/min, and velocity of shot is 65~80m/s；
(5) after bead, rough turn processing is carried out to embryo material, obtains the overall profile of plug valve, is risen again after being quenched to the plug valve to 550~650 DEG C, and be incubated 2.5~5h and carry out modifier treatment；Then finished product is obtained after the assay was approved by finishing, defectoscope.
2. the preparation technology of the high intensity plug valve according to claim 1 for plunger pump, it is characterised in that：The embryo material is 42CrMo round steel, and wherein Mn contents are 0.65wt%~0.85wt%, S contents≤0.025wt%, P content≤0.025wt%.
3. the preparation technology of the high intensity plug valve according to claim 1 for plunger pump, it is characterised in that：Press described in step (3) is 60~65 tonnage levels, and it is 15~30S/ parts to control beat.
4. the preparation technology of the high intensity plug valve according to claim 1 for plunger pump, it is characterised in that：It is described it is rough turn plus during the lathe tool speed of mainshaft be 800~1000r/min, it is 0.2~0.6mm/s to enter part speed.
5. the preparation technology of the high intensity plug valve according to claim 1 for plunger pump, it is characterised in that：The finishing includes smart car technique, and the lathe tool speed of mainshaft is 300~500r/min in smart car technical process, and it is 0.1~0.5mm/s to enter part speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610305922.2A CN107350737A (en) | 2016-05-09 | 2016-05-09 | A kind of preparation technology of high intensity plug valve for plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610305922.2A CN107350737A (en) | 2016-05-09 | 2016-05-09 | A kind of preparation technology of high intensity plug valve for plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107350737A true CN107350737A (en) | 2017-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610305922.2A Pending CN107350737A (en) | 2016-05-09 | 2016-05-09 | A kind of preparation technology of high intensity plug valve for plunger pump |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105127679A (en) * | 2015-08-17 | 2015-12-09 | 河北宏润核装备科技股份有限公司 | Valve machining technology |
| CN105397416A (en) * | 2015-12-01 | 2016-03-16 | 温州市研制阀门厂 | Forging method of valve |
-
2016
- 2016-05-09 CN CN201610305922.2A patent/CN107350737A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105127679A (en) * | 2015-08-17 | 2015-12-09 | 河北宏润核装备科技股份有限公司 | Valve machining technology |
| CN105397416A (en) * | 2015-12-01 | 2016-03-16 | 温州市研制阀门厂 | Forging method of valve |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171117 |
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