CN107350738A - A kind of production technology of plug screw for plunger pump - Google Patents
A kind of production technology of plug screw for plunger pump Download PDFInfo
- Publication number
- CN107350738A CN107350738A CN201610305923.7A CN201610305923A CN107350738A CN 107350738 A CN107350738 A CN 107350738A CN 201610305923 A CN201610305923 A CN 201610305923A CN 107350738 A CN107350738 A CN 107350738A
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- CN
- China
- Prior art keywords
- blank
- forging
- plug screw
- plunger pump
- production technology
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The present invention discloses a kind of production technology of the plug screw for plunger pump, comprises the following steps：Blanking：Billet weight is 4~4.5Kg；Heating：Blank heating is to 1150~1250 DEG C；Forging：Ejection, hot forging is carried out, and by size requirement punching, trimming；Normalizing：Blank normalized treatment after forging, then it is air-cooled to less than 100 DEG C progress beads；It is rough turn：Blank is sent into engine lathe, the both ends end face of rough turn blank；Smart car：Blank is re-fed into the end face and aperture of smart car blank on numerically controlled lathe；Packed after inspection, complete the production of plug screw.The stuffing nut tensile strength minimum 800MPa that the present invention processes, yield strength minimum reach 700MPa, section elongation percentage ＞ 10%, both enough intensity had been ensure that, the pressure born is big, while also has certain elongation percentage, sealing effectiveness is improved, prevents the liquid leakage in the pump housing.
Description
Technical field
The invention belongs to the production technology in parts machining field, specifically a kind of plug screw for plunger pump.
Background technology
Plug screw is connected through a screw thread to prevent the part of fluid seepage, screw thread available standards screw thread or pipe screw thread.Plunger pump
It is an important device of hydraulic system, it is moved back and forth by plunger in cylinder body, sends out the volume of seal operation cavity volume
Changing realize oil suction, force feed, plunger will move back and forth in cylinder body, because amount of exercise is very big, therefore, plunger pump
Particularly it is used for the plunger pump of shale gas exploitation, larger pressure difference is had because working strength is higher, inside and outside pump, to prevent pump
Internal liquid leakage, it is all higher to the intensity requirement of each parts on the pump housing, and will with the fitness of pump body
It is good.
The content of the invention
Goal of the invention：Present invention aims in view of the shortcomings of the prior art, there is provided a kind of sealing being used in plunger pump
The production technology of plug screw good, compression strength is high.
Technical scheme：The production technology of plug screw of the present invention for plunger pump, comprises the following steps：
(1) blanking：Using a diameter of 65mm 4140 structural alloy steels, sawed and expected according to the design requirement of plunger pump,
Billet weight is 4~4.5Kg, the smooth impulse- free robustness of section；
(2) heat：Blank, which is put into intermediate frequency furnace, is heated to 1150~1250 DEG C, and heating beat is 20~30 DEG C/sec；
(3) forge：Ejection after the completion of heating, carry out hot forging, blank descale, and by size requirement punching, cut
Side, forge fire consumption≤1%；
(4) normalizing：After forging blank be sent into car type furnace in normalized treatment, uniform lift in-furnace temperature to 930~950 DEG C,
And 180 minutes are incubated, then blank is hung out into burner hearth, it is air-cooled to less than 100 DEG C progress beads；
(5) it is rough turn：Blank after step (4) processing is sent into engine lathe, the both ends end face of rough turn blank；
(7) smart car：Blank is re-fed into the end face and aperture of smart car blank on numerically controlled lathe, aperture bounce≤0.1mm；
(8) pack：Blank is cleaned, is packed after inspection, completes the production of plug screw.
Further preferably technical scheme is the present invention, and step (3) forging comprises the following steps：
A, ejection, the blank after heating use 250T pneumatic hammer descales；
B, finish-forging, blank are sent into 1000T press and carry out finish-forging, and the temperature of blank keeps 900 DEG C of ＞ in forging process；
C, punching, blank are put into perforating die and are punched out on 160T press；
D, trimming, blank are put into edger and trimming are carried out on 63T press.
Preferably, bead uses in step (4)Cast steel ball, 100% shot-peening.
Beneficial effect：Present invention process is special, and the plug screw of production has the advantages of high intensity, good airproof performance, with plunger pump
Fitness is high, and the stuffing nut tensile strength minimum 800MPa that the present invention processes, yield strength minimum reaches 700MPa,
Section elongation percentage ＞ 10%, both ensure that enough intensity, and the pressure born is big, while also have certain elongation percentage,
Sealing effectiveness is improved, prevents the liquid leakage in the pump housing.
Embodiment
Technical solution of the present invention is described in detail below, but protection scope of the present invention is not limited to the implementation
Example.
Embodiment：A kind of production technology of plug screw for plunger pump, comprises the following steps：
(1) blanking：Using a diameter of 65mm 4140 structural alloy steels, sawed and expected according to the design requirement of plunger pump,
Billet weight is 4~4.5Kg, the smooth impulse- free robustness of section；
(2) heat：Blank, which is put into intermediate frequency furnace, is heated to 1150~1250 DEG C, and heating beat is 20~30 DEG C/sec；
(3) forge：Ejection after the completion of heating, hot forging is carried out, forge fire consumption≤1%, concretely comprise the following steps：
A, ejection, the blank after heating use 250T pneumatic hammer descales；
B, finish-forging, blank are sent into 1000T press and carry out finish-forging, and the temperature of blank keeps 900 DEG C of ＞ in forging process；
C, punching, blank are put into perforating die and are punched out on 160T press；
D, trimming, blank are put into edger and trimming are carried out on 63T press.；
(4) normalizing：After forging blank be sent into car type furnace in normalized treatment, uniform lift in-furnace temperature to 930~950 DEG C,
And 180 minutes are incubated, then blank is hung out into burner hearth, less than 100 DEG C are air-cooled to, is usedCast steel
Ball, 100% bead；
(5) it is rough turn：Blank after step (4) processing is sent into engine lathe, the both ends end face of rough turn blank；
(7) smart car：Blank is re-fed into the end face and aperture of smart car blank on numerically controlled lathe, aperture bounce≤0.1mm；
(8) pack：Blank is cleaned, is packed after inspection, completes the production of plug screw.
Table 1 is the plug screw performance of the embodiment of the present invention and the correction data of existing plug screw performance：
As described above, although the present invention has been represented and described with reference to specific preferred embodiment, but it shall not be construed as
To the limitation of itself of the invention., can be right under the premise of the spirit and scope of the present invention that appended claims define are not departed from
Various changes can be made in the form and details for it.
Claims (3)
1. the production technology of a kind of plug screw for plunger pump, it is characterised in that comprise the following steps：
(1) blanking：Using a diameter of 65mm 4140 structural alloy steels, sawed and expected according to the design requirement of plunger pump,
Billet weight is 4~4.5Kg, the smooth impulse- free robustness of section；
(2) heat：Blank, which is put into intermediate frequency furnace, is heated to 1150~1250 DEG C, and heating beat is 20~30 DEG C/sec；
(3) forge：Ejection after the completion of heating, carry out hot forging, blank descale, and by size requirement punching, cut
Side, forge fire consumption≤1%；
(4) normalizing：After forging blank be sent into car type furnace in normalized treatment, uniform lift in-furnace temperature to 930~950 DEG C,
And 180 minutes are incubated, then blank is hung out into burner hearth, it is air-cooled to less than 100 DEG C progress beads；
(5) it is rough turn：Blank after step (4) processing is sent into engine lathe, the both ends end face of rough turn blank；
(7) smart car：Blank is re-fed into the end face and aperture of smart car blank on numerically controlled lathe, aperture bounce≤0.1mm；
(8) pack：Blank is cleaned, is packed after inspection, completes the production of plug screw.
2. it is used for the production technology of the plug screw of plunger pump according to claim 1, it is characterised in that step (3) is forged
Make and comprise the following steps：
A, ejection, the blank after heating use 250T pneumatic hammer descales；
B, finish-forging, blank are sent into 1000T press and carry out finish-forging, and the temperature of blank keeps 900 DEG C of ＞ in forging process；
C, punching, blank are put into perforating die and are punched out on 160T press；
D, trimming, blank are put into edger and trimming are carried out on 63T press.
3. it is used for the production technology of the plug screw of plunger pump according to claim 1, it is characterised in that in step (4)
Bead usesCast steel ball, 100% shot-peening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610305923.7A CN107350738A (en) | 2016-05-09 | 2016-05-09 | A kind of production technology of plug screw for plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610305923.7A CN107350738A (en) | 2016-05-09 | 2016-05-09 | A kind of production technology of plug screw for plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107350738A true CN107350738A (en) | 2017-11-17 |
Family
ID=60271920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610305923.7A Pending CN107350738A (en) | 2016-05-09 | 2016-05-09 | A kind of production technology of plug screw for plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107350738A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108994550A (en) * | 2018-10-17 | 2018-12-14 | 吴小玉 | A kind of production technology of thrust wheel side cover |
-
2016
- 2016-05-09 CN CN201610305923.7A patent/CN107350738A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108994550A (en) * | 2018-10-17 | 2018-12-14 | 吴小玉 | A kind of production technology of thrust wheel side cover |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171117 |