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 PDF

Info

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
Authority
CN
China
Prior art keywords
blank
forging
plug screw
plunger pump
production technology
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
Application number
CN201610305923.7A
Other languages
Chinese (zh)
Inventor
傅剑波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Chenwei Mechanical Equipment Manufacturing Co Ltd
Original Assignee
Nanjing Chenwei Mechanical Equipment Manufacturing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nanjing Chenwei Mechanical Equipment Manufacturing Co Ltd filed Critical Nanjing Chenwei Mechanical Equipment Manufacturing Co Ltd
Priority to CN201610305923.7A priority Critical patent/CN107350738A/en
Publication of CN107350738A publication Critical patent/CN107350738A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass

Landscapes

  • 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

A kind of production technology of plug screw for plunger pump
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.
CN201610305923.7A 2016-05-09 2016-05-09 A kind of production technology of plug screw for plunger pump Pending CN107350738A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
CN107350730A (en) A kind of processing technology of valve seat
CN104975206B (en) A kind of pneumatic actuator cylinder block material and preparation method thereof
CN110193580A (en) A kind of H13 material forging mold technique
CN105033590B (en) A kind of big flow inserts valve body processing technology
CN109352288A (en) A kind of automobile gimbal fork single piece cold extrusion compression moulding technique
CN107052728B (en) A kind of manufacturing process applied to bevel gear shaft
CN103706743A (en) Die-forging forming process of titanium-alloy forged drum piece
CN105132637A (en) Two-liquid quenching tempering local strengthening heat treatment technology for oil press 5CrMnMo upper die
CN102049669B (en) Production technology for left valve barrel of colliery three-purposed hydraulic valve
CN104139147A (en) Forging method of SB564 UNS N06690 alloy large-scale internal T-shaped annular forge piece blank
CN107350738A (en) A kind of production technology of plug screw for plunger pump
CN105420470A (en) Surface-hardening treatment method for austenitic steel
CN110625051B (en) Manufacturing method for integrally forging three-crank-pin crankshaft forging piece
CN106001343A (en) Free forging process for large hoisting ring
CN107350735A (en) A kind of processing method of pump cover
CN107350727B (en) A kind of processing technology of high intensity plunger pump pipe clamp
CN107350725A (en) A kind of processing technology of stuffing nut
RU2484915C1 (en) Method of making forged pieces shaped to hemisphere with throat
CN105522087A (en) Die forging process of granulator press roll
CN109513865B (en) Forging forming method for water chamber end socket with side nozzle
CN106391986A (en) Manufacturing method for car yoke forged piece
CN103343292B (en) Production method of large explosive pressing mould
CN103817277B (en) The boiler-steam dome manufacture method of 13MnNiMo5-4 cylinder forgings
CN206347070U (en) Prevent that alloy from falling de- forging pyriform rope sling
CN105728621A (en) Radial extrusion forming technology for cross axle forge piece

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