CN107160116A - Carbon steel valve element preparation method for petroleum pipeline - Google Patents
Carbon steel valve element preparation method for petroleum pipeline Download PDFInfo
- Publication number
- CN107160116A CN107160116A CN201710611135.5A CN201710611135A CN107160116A CN 107160116 A CN107160116 A CN 107160116A CN 201710611135 A CN201710611135 A CN 201710611135A CN 107160116 A CN107160116 A CN 107160116A
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- CN
- China
- Prior art keywords
- valve element
- carbon steel
- petroleum pipeline
- precision
- element preparation
- 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.)
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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 invention discloses a kind of carbon steel valve element preparation method for petroleum pipeline, comprise the following steps：1）Roughing；2）Semifinishing；3）Heat treatment；4）Finishing.By the above-mentioned means, ball valve core precision, thickness, integrality that the present invention makes can be guaranteed, the cost of ball valve core is reduced.
Description
Technical field
The present invention relates to valve body processing technique field, prepared by more particularly to a kind of carbon steel valve element for petroleum pipeline
Method.
Background technology
Valve is widely used in modern society.Particularly in water heating pipe fittings technical field, the valve of prior art has
Many kinds, mainly have ball valve, angle valve, stop valve etc., wherein ball-valve structure is relatively simple, and the valve element of mainly ball valve is simpler
It is single.The valve element of ball valve is in symmetrical chondritic on the whole, and there is the overall cylindric through hole of an insertion centre, in the outer of valve element
The valve rod groove that is connected with valve rod is laterally provided with sphere centre position, when work, rotation valve rod makes the cylinder of valve element
The import and export of shape through-hole alignment ball valve, when being stopped, rotating backward valve rod makes the sphere of valve element be directed at the turnover of ball valve
Mouthful.It is relatively simple for structure due to ball valve, it is easy to operate.So in valve technology field application widely.And realize ball
The major part of the sealing function of valve is valve element, and the sealing ring coordinated with it, and the valve element of ball valve occurs wearing and tearing or ruptured just
Easily reveal, scrap whole ball valve, therefore improve the carbon steel valve element preparation method for petroleum pipeline, make it more
Reliably just seem particularly necessary.
The content of the invention
The present invention solves the technical problem of：It is reliable by processing technology, realize that finished product valve element is more reliable.
In order to solve the above technical problems, one aspect of the present invention is：There is provided a kind of for petroleum pipeline
Carbon steel valve element preparation method, comprises the following steps：
1）Roughing：Blank after heating is poured into the die sinking of ball valve core and carries out forging molding, the valve element after shaping is cylindrical and long
Degree should leave enough allowance, and roughing back valve core should carry out modifier treatment, make its hardness in 25-30HRC；
2）Semifinishing：Cylindrical, the planar end surface with collet or the tight valve element of soft three-jaw folder, drill centers and leaves turning
Appropriate surplus, the centre bore at valve element two ends is must have centre bore in the positioning datum in process, process
Good hole rows, high-precision and less surface roughness value；
3）Heat treatment：Semifinishing back valve core should use vacuum hardening heat treatment method, and it is 60-66HRC, Ran Houjin to make its hardness
Row stabilization processes；
4）Finishing：Center spool hole is first fixed before grinding, then to roughly grind valve element cylindrical with each end face of convex shoulder, should be left after corase grind
0.03mm fine grinding surplus, then carry out 160 DEG C of low temperature agings and handle 20 hours, to eliminate the material internal stress that processing is caused, so
Processed afterwards on high-precision grinder, the precision of workpiece is up to Ra0.63-1.25 μm after fine grinding.
In a preferred embodiment of the present invention, the step 3）Middle stabilization processes are -70-80 DEG C of cold treatments 2 hours.
In a preferred embodiment of the present invention, the step 3）Middle vacuum hardening heat treatment method is to put the valve element
Enter in electrical heating baking oven, oven temperature is controlled at 280 DEG C -300 DEG C, be put into water and quickly cool down after drying 1-1.5 hours.
In a preferred embodiment of the present invention, the step 1）Forging molding is forged using 1500T friction presses
Make.
The beneficial effects of the invention are as follows：Ball valve core precision, thickness, the integrality of making can be guaranteed, reduction
The cost of ball valve core.
Embodiment
It is described in detail with reference to presently preferred embodiments of the present invention, so that advantages and features of the invention can be more easy to
In being readily appreciated by one skilled in the art, apparent clearly defined so as to be made to protection scope of the present invention.
Embodiment one
A kind of carbon steel valve element preparation method for petroleum pipeline, comprises the following steps：
1）Roughing：Blank after heating is poured into the die sinking of ball valve core and carries out forging molding, the valve element after shaping is cylindrical and long
Degree should leave enough allowance, and roughing back valve core should carry out modifier treatment, make its hardness in 25-30HRC；
2）Semifinishing：Cylindrical, the planar end surface with collet or the tight valve element of soft three-jaw folder, drill centers and leaves turning
Appropriate surplus, the centre bore at valve element two ends is must have centre bore in the positioning datum in process, process
Good hole rows, high-precision and less surface roughness value；
3）Heat treatment：Semifinishing back valve core should use vacuum hardening heat treatment method, and it is 60-66HRC, Ran Houjin to make its hardness
Row stabilization processes；
4）Finishing：Center spool hole is first fixed before grinding, then to roughly grind valve element cylindrical with each end face of convex shoulder, should be left after corase grind
0.03mm fine grinding surplus, then carry out 160 DEG C of low temperature agings and handle 20 hours, to eliminate the material internal stress that processing is caused, so
Processed afterwards on high-precision grinder, the precision of workpiece is up to Ra0.63-1.25 μm after fine grinding.
Further illustrate, the step 3）Middle stabilization processes are -70-80 DEG C of cold treatments 2 hours, the step 3）In it is true
The valve element is is put into electrical heating baking oven by the burning hot processing method of air quenching, and oven temperature is controlled at 280 DEG C -300 DEG C, dries 1-
It is put into water and quickly cools down after 1.5 hours, the step 1）Forging molding is forged using 1500T friction presses.
Skin processing.In the production process of Hydraulic Elements, grinding is one of conventional polishing processing method.Except grinding
Outside, outer round surface also has the polishing processing methods such as microstoning, two-wheel honing.Their common feature is to use fine granularity abrasive material
With less cutting output, make cutting force and the heat of generation all very littles, and abrasive material motion is produced complicated reticulate pattern, so as to obtain
Very high surface quality.In addition, there is the methods such as rolling, polishing.In grinding, workpiece surface roughness Ra values can be made
Grinding process below 0.16 μm is referred to as best bright finish（Surface roughness value is small）Grinding.It includes fine grinding grinding, superfinishing
Mill grinding and mirror grinding.Typically, surface roughness Ra value is referred to as fine grinding grinding between 0.08 ~ 0.16 μm, and Ra values exist
It is referred to as superfine milling between 0.02 ~ 0.04 μm, Ra values have reached 0.01 μm of referred to as mirror grinding.With grinding etc. processing method
Compare, best bright finish grinding has productivity ratio high, applied widely, and it is excellent to improve geometrical precision and positional precision etc.
Point.The heating-up temperature of steel grade quenching is in actual production, and the selection of heating-up temperature will be adjusted as the case may be.Such as Asia altogether
It is lower limit to analyse carbon content in steel, and when batch is more, temperature upper limit is can select during part depth of hardening zone to be increased etc.；If workpiece
Complex-shaped, deformation requirements are strict etc. will use lowest temperature.Quenching Soaking Time is by equipment mode of heating, accessory size, steel
The many factors such as composition, batch and plant capacity determine.For integral quenching, the purpose of insulation is to make inside workpiece temperature
Degree uniformly reaches unanimity.To all kinds of quenchings, its soaking time is ultimately depended on obtains good quenching in the region for requiring quenching
Heat tissue.Heating and the important step that insulation is influence quenching quality, the structural state that austenitizing is obtained, which is directly affected, to be quenched
Performance after fire.Cooling velocity have to be larger than the critical cooling rate of steel.Workpiece is in cooling procedure, the cooling of surface and center portion
Speed has different, if this species diversity is sufficiently large, is likely to result in and is partially converted to martensite more than critical cooling rate,
And can not be transformed into the situation of martensite less than the center portion of critical cooling rate.To ensure all to be changed into martensite in whole cross section
Need from the sufficiently strong hardening media of cooling capacity, to ensure that workpiece center portion has sufficiently high cooling velocity.But cooling speed
Degree is big, inside workpiece due to expand with heat and contract with cold it is uneven cause internal stress, workpiece may be made to deform or ftracture.Thus to consider above-mentioned
Two kinds of contradictory factors, reasonable selection hardening media and the type of cooling.
Present invention is disclosed a kind of carbon steel valve element preparation method for petroleum pipeline, the ball valve core precision of making,
Thickness, integrality can be guaranteed, and reduce the cost of ball valve core.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright description is made, or directly or indirectly it is used in other related technology necks
Domain, is included within the scope of the present invention.
Claims (4)
1. a kind of carbon steel valve element preparation method for petroleum pipeline, it is characterised in that：Comprise the following steps：
1）Roughing：Blank after heating is poured into the die sinking of ball valve core and carries out forging molding, the valve element after shaping is cylindrical and long
Degree should leave enough allowance, and roughing back valve core should carry out modifier treatment, make its hardness in 25-30HRC；
2）Semifinishing：Cylindrical, the planar end surface with collet or the tight valve element of soft three-jaw folder, drill centers and leaves turning
Appropriate surplus, the centre bore at valve element two ends is must have centre bore in the positioning datum in process, process
Good hole rows, high-precision and less surface roughness value；
3）Heat treatment：Semifinishing back valve core should use vacuum hardening heat treatment method, and it is 60-66HRC, Ran Houjin to make its hardness
Row stabilization processes；
4）Finishing：Center spool hole is first fixed before grinding, then to roughly grind valve element cylindrical with each end face of convex shoulder, should be left after corase grind
0.03mm fine grinding surplus, then carry out 160 DEG C of low temperature agings and handle 20 hours, to eliminate the material internal stress that processing is caused, so
Processed afterwards on high-precision grinder, the precision of workpiece is up to Ra0.63-1.25 μm after fine grinding.
2. the carbon steel valve element preparation method according to claim 1 for petroleum pipeline, it is characterised in that：The step
3）Middle stabilization processes are -70-80 DEG C of cold treatments 2 hours.
3. the carbon steel valve element preparation method according to claim 1 for petroleum pipeline, it is characterised in that：The step
3）The valve element is is put into electrical heating baking oven by middle vacuum hardening heat treatment method, and oven temperature is controlled at 280 DEG C -300 DEG C,
It is put into water and quickly cools down after drying 1-1.5 hours.
4. the carbon steel valve element preparation method according to claim 1 for petroleum pipeline, it is characterised in that：The step
1）Forging molding is forged using 1500T friction presses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710611135.5A CN107160116A (en) | 2017-07-25 | 2017-07-25 | Carbon steel valve element preparation method for petroleum pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710611135.5A CN107160116A (en) | 2017-07-25 | 2017-07-25 | Carbon steel valve element preparation method for petroleum pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107160116A true CN107160116A (en) | 2017-09-15 |
Family
ID=59818223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710611135.5A Pending CN107160116A (en) | 2017-07-25 | 2017-07-25 | Carbon steel valve element preparation method for petroleum pipeline |
Country Status (1)
| Country | Link |
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| CN (1) | CN107160116A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109128695A (en) * | 2018-07-31 | 2019-01-04 | 蓝箭航天技术有限公司 | The processing method of airspace engine low temperature valve |
| CN109483331A (en) * | 2018-11-12 | 2019-03-19 | 重庆羿业气门有限公司 | A kind of integrated processing technology for metal works |
| CN111390499A (en) * | 2020-03-19 | 2020-07-10 | 无锡鹰贝精密轴承有限公司 | High-precision induction high-frequency deep-hole valve core and preparation method thereof |
| CN112247496A (en) * | 2020-11-16 | 2021-01-22 | 常州艾肯智造科技有限公司 | High-precision machining method for valve core of floating ball type drain valve |
Citations (5)
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|---|---|---|---|---|
| CN101113791A (en) * | 2006-07-24 | 2008-01-30 | 金济定 | Ball valve core and fabrication technology thereof |
| CN102825431A (en) * | 2012-09-07 | 2012-12-19 | 贵州凯星液力传动机械有限公司 | Machining method of high-abrasion resistance valve core |
| US20130220424A1 (en) * | 2012-02-23 | 2013-08-29 | Cameron International Corporation | Rotating compressor valve |
| US20140008562A1 (en) * | 2012-07-06 | 2014-01-09 | MAN Diesel & Turbo, Filial of MAN Diesel & Turbo SE, Tyskland | Exhaust valve spindle for an exhaust valve in an internal combustion engine |
| CN105537885A (en) * | 2016-03-03 | 2016-05-04 | 布志刚 | Machining method of valve element |
-
2017
- 2017-07-25 CN CN201710611135.5A patent/CN107160116A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101113791A (en) * | 2006-07-24 | 2008-01-30 | 金济定 | Ball valve core and fabrication technology thereof |
| US20130220424A1 (en) * | 2012-02-23 | 2013-08-29 | Cameron International Corporation | Rotating compressor valve |
| US20140008562A1 (en) * | 2012-07-06 | 2014-01-09 | MAN Diesel & Turbo, Filial of MAN Diesel & Turbo SE, Tyskland | Exhaust valve spindle for an exhaust valve in an internal combustion engine |
| CN102825431A (en) * | 2012-09-07 | 2012-12-19 | 贵州凯星液力传动机械有限公司 | Machining method of high-abrasion resistance valve core |
| CN105537885A (en) * | 2016-03-03 | 2016-05-04 | 布志刚 | Machining method of valve element |
Non-Patent Citations (2)
| Title |
|---|
| 叶文华: "《机械制造工艺与装备》", 28 February 2011 * |
| 李壮云: "《液压元件与系统》", 30 September 2011 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109128695A (en) * | 2018-07-31 | 2019-01-04 | 蓝箭航天技术有限公司 | The processing method of airspace engine low temperature valve |
| CN109483331A (en) * | 2018-11-12 | 2019-03-19 | 重庆羿业气门有限公司 | A kind of integrated processing technology for metal works |
| CN111390499A (en) * | 2020-03-19 | 2020-07-10 | 无锡鹰贝精密轴承有限公司 | High-precision induction high-frequency deep-hole valve core and preparation method thereof |
| CN112247496A (en) * | 2020-11-16 | 2021-01-22 | 常州艾肯智造科技有限公司 | High-precision machining method for valve core of floating ball type drain valve |
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Application publication date: 20170915 |