CN1546893A - Processing method of superhard sealing ball valve - Google Patents
Processing method of superhard sealing ball valve Download PDFInfo
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- CN1546893A CN1546893A CNA2003101191807A CN200310119180A CN1546893A CN 1546893 A CN1546893 A CN 1546893A CN A2003101191807 A CNA2003101191807 A CN A2003101191807A CN 200310119180 A CN200310119180 A CN 200310119180A CN 1546893 A CN1546893 A CN 1546893A
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Abstract
The invention belongs to device safety technology field, which refers to a kind of processing method for ultrahard sealed ball valve. The steps are: the ball and the sealing ring are set on the special clamp; it uses special concave and convex ball grinding apparatus to process, grind, the grinding material is M40, M15 diamond powder, M5, the surface is painted with W.C, the painting thickness is 0.3-0.5 mm, the rigidity of the ball and the sealing ring surface after being painted can reach HV900-1200(HRC69-73). When assembling the ball valve, carries on manual lapping-in for 2-3 times to the ball and sealing ring sphere surface with grinding liquid, the non-sphere reach 0.002-0.004, the smooth finish reaches Ra0.2-0.4, the anastomotic rate of the product reaches above 95%. The invention is high temperature resisting, impact resisting, and the lifespan is long.
Description
Technical field
The invention belongs to the device security technical field, relate to a kind of processing method of superhard seal ball-valve
Background technique
As everyone knows, valve function is a control unit in the fluid delivery system, has water conservancy diversion, dams, function such as shunting, and it is little that ball valve has flow resistance, opens rapidly, is that domestic and international expert generally acknowledges the most rising update product.The expert is devoted to the developmental research of ball valve both at home and abroad for a long time, but owing to limit by ball seal loop material, ball-valve structure, fabrication process condition the developmental research of ball valve is restricted.For a long time, the spheroid of ball valve adopts carbon steel, alloyed steel, stainless steel material usually, and seal ring adopts back nonmetallic material such as PVF, nylon usually, under high pressure is difficult to bear high specific pressure, can only use in 200 ℃ of following temperature ranges; Entering for the 7's 0 then adopts split type, the orbit ball valve of spheroid, and purpose is to make valve break away under high-temperature and high-pressure conditions that high pressure causes the scratch of spheroid and seal ring and the sealing face leakage that forms, but complex structure does not reach the effect of anticipation.
Entered for the 8's 0, the valve expert does a lot of work to ball valve research both at home and abroad, adopts the bulk ceramics material as ball valve spheroid, seal valve, promptly waste a large amount of expensive alloys materials, simultaneously stupalith fragility is not bigger, and is shock-resistant and brittle crack occurs, and the ball valve service condition is restricted; The spheroid that has then adopts soft-nitriding process sealing surface nitriding treatment, and the sealing surface of seal ring then adopts built-up welding CoCrw cemented carbide, and hardness reaches H
RC55Though spherome surface hardness is higher after the nitrogenize, gas soft nitriding, nitride layer are too thin, and ball valve opens several times that sealing surface and sphere will cause scratch, and scarred, main is to carry graininess, dust medium.
Summary of the invention
In order to overcome in the present ball valve metal to metal seal face at high temperature, high pressure, high flow rate, acutely wash away, under wearing and tearing, the corrosion situation, the disadvantage that valve working life is low, leakage rate is big, quality guarantee period is short, the present invention proposes a kind of processing method of superhard seal ball-valve, can satisfy the performance parameters requirement of ball valve sealing.High temperature resistant, shock-resistant, erosion resistance, the life-span is long.
Technological scheme of the present invention is: a kind of processing method of superhard seal ball-valve, and process step is:
(1) processing spheroid, concrete steps are:
1, clamp blank, press spheroid port hole centering, processing channel hole, the conical surface, fillet,
2, be locating basis with the spheroid passage after the processing, mill the processing spheroid, the spheroid degree of finish after the fine finishing is not less than Ra1.6, and coaxality is less than 0.05, and the garden degree is not less than 0.01,
3, the spheroid after will processing, clamping are on special fixture, and (as shown in Figure 2) uses special-purpose recessed circular grinding tool and 60
#Monocrystalline fused alumina mill is worked into design size, and surface finishment is not less than Ra 0.08, and coaxality is less than 0.03, and the garden degree is not less than 0.006,
4, outer surface of spheroid spraying W.C, coating thickness are 0.3-0.5mm, and hardness is Hv900--1200 (HRC68-73),
5, the spheroid clamping after the spraying uses special-purpose concave ball shape grinding tool processing, degree of finish on special fixture
Be not less than Ra3.2, coaxality is 0.03, and the garden degree is not less than 0.006,
Corase grind, bortz powder M40, corase grind back degree of finish be not less than Ra0.08, coaxality less than 0.03, no
The garden degree is less than 0.004,
Correct grinding, bortz powder M15, correct grinding back degree of finish is not less than Ra0.2-0.4, and coaxality is less than 0.03,
The garden degree is not less than 0.004;
6, grind, spheroid that processes and special-purpose concave ball shape grinding tool are to grinding, and abrasive powder is respectively M15, M5 bortz powder, and the garden degree is not less than 0.0025;
(2) processing seal ring, concrete steps are:
1, by designing requirement processing, the coaxality that guarantees seal ring sphere and outer garden is less than 0.03,
2, the spraying of seal ring sphere W, C, coating thickness is 0.3-0.5mm,
3, the seal ring after the spraying uses special-purpose protruding spherical grinding tool to process grinding (as shown in Figure 3) on special fixture:
1. roughing, abrasive material is the M40 bortz powder, degree of finish is not less than Ra0.8
2. fine finishing, abrasive material is the M15 bortz powder, degree of finish is not less than Ra0.4,
4, grind: seal ring that processes and special-purpose protruding spherical grinding tool are to grinding, and abrasive powder is M15, M5, and degree of finish is Ra0.2--0.4;
(3) assembling of ball valve, concrete steps are:
1, spheroid and seal ring sphere are carried out 2-3 time manually to grinding, the lapping liquid of use is as follows successively:
1. use the W40 diamond paste, the configuration lapping liquid, lapping liquid is: glycerine+water, lapping liquid proportioning 1: 1,
2. with W10 diamond paste configuration lapping liquid, grease 22.4% mixes fat 31.5%, kerosene 1.1%,
3. put lapping liquid with W5 diamond paste bedding-in, grease 22.4% mixes fat 31.5%, and kerosene 1.1% is after the grinding, with cleaning solution or 90
#Gasoline cleans spheroid 10-15 minute;
2, grind sphere and seal ring valve port, to grinding, polish process and parameter request are identical with ball lapping with spheroid and seal ring valve port,
3, check spheroid and seal ring valve port Percent of contact area:
Spheroid, seal ring are packed in the valve body tight double-screw bolt, spinning ball and seal ring sphere form bright ball-type band, test for added water must not have leakage, when the installation valve gap is to valve body, adjust the position of seal ring and ball valve spheroid, adjust spacer and adjust the valve seat width, the center that guarantees to have assembled ball is concentric with stem shaft
4, tighten the Gland nut again after spheroid and valve seals have assembled, after the final assembly, close open valve
5, complete machine carries out Shell test, leakage test by standard.
The invention has the beneficial effects as follows: high temperature resistant, shock-resistant, erosion resistance, the life-span is long.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is a ball-valve structure schematic representation of the present invention.
Fig. 2 is the special fixture structural representation that the present invention processes spheroid.
Fig. 3 is the special fixture structural representation that the present invention processes seal ring.
Among the figure, 1. valve rod, 2 glands, 3. left valve barrel, 4. left seal ring, 5. spheroid, 6. right seal ring, 7. in flange gasket, 8. bolt, 9. nut, 10. right valve barrel, 11. left seal coating, 12. right seal coatings, 13. spheroid coatings, 14. special-purpose concave ball shape grinding tools, 15. special-purpose protruding spherical grinding tools.
Embodiment
1, with spheroid 5 roughing moulding (out of roundness reaches 0.05), adopt the special fixture of processing spheroid 5, (as shown in Figure 2) use special-purpose concave ball shape grinding tool 14 processing spheroids 5, spheroid 5 degree of finish after the fine finishing are not less than Ra1.6, coaxality is less than 0.05, the garden degree is not less than 0.01, in spheroid 5 surface spraying WC coatings, spraying 13 thickness is 0.3-0.5mm, and hardness is Hv900--1200 (HRC68-73), and the spheroid 5 after the spraying is processed under special fixture and special diamond bistrique, degree of finish is not less than Ra3.2, coaxality is 0.03, and the garden degree is not less than 0.006
Corase grind, bortz powder M40, corase grind back degree of finish are not less than Ra0.08, coaxality less than 0.03, the garden degree is not less than 0.004,
Correct grinding, bortz powder M15, correct grinding back degree of finish is not less than Ra0.2-0.4, coaxality less than 0.0 not the garden degree less than 0.004; Adopt M15, M5 different grain size rank diamond dust to grind spheroid 5 cover coats, carry out spherical polishing then, the garden degree is not less than 0.0025; Use special-purpose spherical cutter 14 processing left and right sides seal rings 4,6, determine left seal coating 11., right seal coating 12, surface spraying WC coating, coating thickness is 0.3-0.5mm, grinds with diamond dust, carries out spherical polishing then,
Spheroid 5 that processes and special-purpose concave ball shape grinding tool are to grinding, and abrasive powder is respectively M15, M5 bortz powder, and the garden degree is not less than 0.0025;
2, processing seal ring 4,6, the coaxality that guarantees seal ring 4,6 spheres and outer garden is less than 0.03, the spraying of seal ring 4,6 spheres W, C, determine left seal coating 11, right seal coating 12, coating thickness is 0.3-0.5mm, and the seal ring 4,6 after the spraying is using processing on the special-purpose protruding spherical grinding tool 15, (as shown in Figure 3) grinding respectively on the special fixture:
Roughing, abrasive material is the M40 bortz powder, degree of finish is not less than Ra0.8
Fine finishing, abrasive material is the M15 bortz powder, degree of finish is not less than Ra0.4,
Grind: the seal ring 4,6 and 5 pairs of the spheroids that process grind, and abrasive powder is M15, M5, and degree of finish is Ra0.2--0.4;
3, superhard seal ball-valve is installed, spheroid 5 and seal ring 4,6 spheres that process are carried out 2-3 time manually to grinding, the lapping liquid of use is as follows successively:
1. use the W40 diamond paste, the configuration lapping liquid, lapping liquid is: glycerine+water, lapping liquid proportioning are 1: 1,2. with W10 diamond paste configuration lapping liquid, proportioning is a grease 22.4%, mixes fat 31.5%, kerosene 1.1%, 3. put lapping liquid with W5 diamond paste bedding-in, proportioning is a grease 22.4%, mixes fat 31.5%, kerosene 1.1%, after the grinding, with cleaning solution or 90
#Gasoline cleans the 10-15 branch with spheroid, grinds sphere and seal ring 4,6 valve ports, and to grinding, polish process and parameter request are identical with ball lapping with the spheroid 5 that processes and seal ring 4,6 valve ports,
Left and right sides seal ring 4,6 is contained on the left and right sides valve body 3,10, and left and right sides valve body 3,10 is connected and fixed by bolt 8 and nut 9.Guarantee absolute symmetry degree with spheroid 5 central axis.Middle flange gasket 7 employing Expanded graphites folder corrosion resistant plates, flange gasket 7 during integrating error are taked to adjust is to guarantee that valve rod and spheroid concentricity reach and the degree of symmetry of left and right sides seal ring.Selected part is preferentially measured accessory size when assembling, adjusts the thickness of left and right sides metal o-ring 4,6.Ball valve is the valve of closure member spheroid around vertical passage center line half-twist, mainly closes, cuts off medium and use on pipeline.One end flows into the other end to fluid along pipeline from valve, when pipeline need cut off, by handle 1 or pneumatic, Electric actuator torsion bar is passed to valve rod 1, valve rod 1 drives spheroid 5 and seal ring 4,6 relative friction half-twists, under the high specific pressure condition, form sealing between spheroid and the seal ring, during unlatching, spheroid 90 ° of counterrotatings under the effect of handle valve rod.
Claims (3)
1, a kind of processing method of superhard seal ball-valve is characterized in that, process step is:
(1) processing spheroid: concrete steps are:
1, clamp blank, press spheroid port hole centering, processing channel hole, the conical surface, fillet,
2, be locating basis with the spheroid passage after the processing, mill the processing spheroid, the spheroid degree of finish after the fine finishing is not less than Ra1.6, and coaxality is less than 0.05, and the garden degree is not less than 0.01,
3, the spheroid clamping after will processing uses special-purpose concave ball shape grinding tool to use 60 on special fixture
#Monocrystalline fused alumina mill processing, surface finishment is not less than Ra 0.08, and coaxality is less than 0.03, and the garden degree is not less than 0.006,
4, outer surface of spheroid spraying W.C, coating thickness is 0.3-0.5mm, hardness is Hv900-1200 (HRC68-73),
5, on the spheroid clamping special fixture after the spraying, use the processing of special-purpose concave ball shape grinding tool, degree of finish is not less than Ra3.2, and coaxality is 0.03, and the garden degree is not less than 0.006,
Corase grind, bortz powder are that M40, corase grind back degree of finish are not less than Ra0.8, coaxality less than 0.03, the garden degree is not less than 0.004,
Correct grinding, bortz powder is M15, and correct grinding back degree of finish is not less than Ra0.2-0.4, and coaxality is less than 0.03, and the garden degree is not less than 0.004,
6, grind, spheroid that processes and special-purpose concave ball shape grinding tool are to grinding, and abrasive powder is respectively M15, M5, and the garden degree is not less than 0.0025;
(2) processing of seal ring: concrete steps are:
1, the coaxality in processing seal ring sphere and outer garden is less than 0.03,
2, the spraying of seal ring sphere W, C, coating thickness is 0.3-0.5mm,
3, the seal ring clamping after the spraying uses on the special-purpose protruding spherical grinding tool and processes grinding on the special device anchor clamps:
1. roughing, abrasive material is the M40 bortz powder, degree of finish is not less than Ra0.8
2. fine finishing, abrasive material is the M15 bortz powder, degree of finish is not less than Ra0.4,
4, grind: seal ring that processes and special-purpose protruding spherical grinding tool are to grinding, and abrasive powder is M15, M5, and degree of finish is Ra0.2--0.4;
(3) assembling of ball valve: concrete steps are:
1, spheroid and the seal ring sphere that processes carried out 2-3 time manually to grinding, the lapping liquid of use is as follows successively:
1. use the W40 diamond paste, the configuration lapping liquid, lapping liquid is: glycerine+water, lapping liquid proportioning are 1: 1,
2. with W10 diamond paste configuration lapping liquid, proportioning is a grease 22.4%, mixes fat 31.5%, kerosene 1.1%,
3. put lapping liquid with W5 diamond paste bedding-in, proportioning is a grease 22.4%, mixes fat 31.5%, kerosene 1.1%,
After the grinding, with cleaning solution or 90
#Gasoline cleans the 10-15 branch with spheroid,
2, grind sphere and seal ring valve port, to grinding, polish process and parameter request are identical with ball lapping with the spheroid that processes and seal ring valve port,
3, valve gap is being installed to valve body the time, the position of adjusting seal ring and spheroid is adjusted spacer and is adjusted the seal ring width, and it is concentric with stem shaft that the center of ball has been assembled in assurance,
Tighten the Gland nut after spheroid and seal ring have assembled again, final assembly finishes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101191807A CN1546893A (en) | 2003-12-17 | 2003-12-17 | Processing method of superhard sealing ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101191807A CN1546893A (en) | 2003-12-17 | 2003-12-17 | Processing method of superhard sealing ball valve |
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| Publication Number | Publication Date |
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| CN1546893A true CN1546893A (en) | 2004-11-17 |
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ID=34338175
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2003101191807A Pending CN1546893A (en) | 2003-12-17 | 2003-12-17 | Processing method of superhard sealing ball valve |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102141165A (en) * | 2010-01-29 | 2011-08-03 | 无锡市威海达机械制造有限公司 | Position selectable multipurpose ultrahigh pressure check valve combination device |
| CN102380821A (en) * | 2011-10-28 | 2012-03-21 | 江苏上齿集团有限公司 | Bevel gear shaft dual-positioning grinding fixture |
| CN102441771A (en) * | 2011-10-18 | 2012-05-09 | 天津国际机械有限公司 | Processing technique of valve parts in ball valve with hard seal structure |
| CN103160208A (en) * | 2013-03-01 | 2013-06-19 | 青岛恒汇帕特模具科技有限公司 | Man-made diamond grinding paste |
| CN103447938A (en) * | 2013-08-23 | 2013-12-18 | 浙江瑞莱士机械有限公司 | Grinding process of sealing surface of ball valve |
| CN104191178A (en) * | 2014-09-10 | 2014-12-10 | 芜湖市金贸流体科技股份有限公司 | Machining method for hard sealing gate valve body |
| CN112077700A (en) * | 2020-07-24 | 2020-12-15 | 江苏联峰工业装备科技有限公司 | Ball sealing surface grinding machine capable of quickly cooling |
| CN114658877A (en) * | 2022-03-23 | 2022-06-24 | 安徽球科流体制造有限公司 | Sphere and processing technology thereof |
-
2003
- 2003-12-17 CN CNA2003101191807A patent/CN1546893A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102141165A (en) * | 2010-01-29 | 2011-08-03 | 无锡市威海达机械制造有限公司 | Position selectable multipurpose ultrahigh pressure check valve combination device |
| CN102141165B (en) * | 2010-01-29 | 2014-11-19 | 无锡市威海达机械制造有限公司 | Position selectable multipurpose ultrahigh pressure check valve combination device |
| CN102441771A (en) * | 2011-10-18 | 2012-05-09 | 天津国际机械有限公司 | Processing technique of valve parts in ball valve with hard seal structure |
| CN102380821A (en) * | 2011-10-28 | 2012-03-21 | 江苏上齿集团有限公司 | Bevel gear shaft dual-positioning grinding fixture |
| CN102380821B (en) * | 2011-10-28 | 2013-07-10 | 江苏上齿集团有限公司 | Bevel gear shaft dual-positioning grinding fixture |
| CN103160208A (en) * | 2013-03-01 | 2013-06-19 | 青岛恒汇帕特模具科技有限公司 | Man-made diamond grinding paste |
| CN103447938A (en) * | 2013-08-23 | 2013-12-18 | 浙江瑞莱士机械有限公司 | Grinding process of sealing surface of ball valve |
| CN103447938B (en) * | 2013-08-23 | 2015-07-08 | 浙江瑞莱士机械有限公司 | Grinding process of sealing surface of ball valve |
| CN104191178A (en) * | 2014-09-10 | 2014-12-10 | 芜湖市金贸流体科技股份有限公司 | Machining method for hard sealing gate valve body |
| CN112077700A (en) * | 2020-07-24 | 2020-12-15 | 江苏联峰工业装备科技有限公司 | Ball sealing surface grinding machine capable of quickly cooling |
| CN114658877A (en) * | 2022-03-23 | 2022-06-24 | 安徽球科流体制造有限公司 | Sphere and processing technology thereof |
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