CN101078453A - Pipe joint rear cutting ferrule and heat processing method - Google Patents
Pipe joint rear cutting ferrule and heat processing method Download PDFInfo
- Publication number
- CN101078453A CN101078453A CN 200710024606 CN200710024606A CN101078453A CN 101078453 A CN101078453 A CN 101078453A CN 200710024606 CN200710024606 CN 200710024606 CN 200710024606 A CN200710024606 A CN 200710024606A CN 101078453 A CN101078453 A CN 101078453A
- Authority
- CN
- China
- Prior art keywords
- layer
- solid solution
- cutting ferrule
- rear cutting
- card body
- 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.)
- Granted
Links
- 238000005520 cutting process Methods 0.000 title claims description 16
- 238000003672 processing method Methods 0.000 title 1
- 239000006104 solid solution Substances 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 238000005256 carbonitriding Methods 0.000 claims abstract description 7
- 230000008595 infiltration Effects 0.000 claims description 22
- 238000001764 infiltration Methods 0.000 claims description 22
- 238000005121 nitriding Methods 0.000 claims description 9
- 238000005255 carburizing Methods 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 6
- 238000005728 strengthening Methods 0.000 abstract description 8
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 18
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 14
- 229910052799 carbon Inorganic materials 0.000 description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 9
- 229910001566 austenite Inorganic materials 0.000 description 9
- 229910052757 nitrogen Inorganic materials 0.000 description 9
- 239000000463 material Substances 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- CXOWYMLTGOFURZ-UHFFFAOYSA-N azanylidynechromium Chemical compound [Cr]#N CXOWYMLTGOFURZ-UHFFFAOYSA-N 0.000 description 2
- UFGZSIPAQKLCGR-UHFFFAOYSA-N chromium carbide Chemical compound [Cr]#C[Cr]C#[Cr] UFGZSIPAQKLCGR-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000012916 structural analysis Methods 0.000 description 2
- 229910003470 tongbaite Inorganic materials 0.000 description 2
- 238000005275 alloying Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Landscapes
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
The invention discloses a post-ferrule of pipe joint ferrule and the heat treatment method. The post-ferrule comprises post-ferrule body whose front end is cone. A strengthening solid solution seepage layer is compounded on the post-ferrule body. The thickness of said strengthening solid solution seepage layer is 10-30 mu m. The strengthening solid solution seepage layer can be nitrided layer, carburized layer or carbonitriding layer. The heat treatment method is that under pressure of 100-150Pa and temperature of 300-450deg.C, nitrided, carburized or carbonitriding technology is carried out for ferrule body and the time is for 60-120 minutes. In the invention by heat treatment method a strengthening solid solution seepage layer is compounded on the post-ferrule body so that the mechanical performance of outer surface of post-ferrule body can be improved, the intensity is improved and meanwhile corrosion resistance can be guaranteed.
Description
Technical field
The present invention relates to a kind of pipe coupling cutting ferrule and heat treatment method, particularly a kind of good mechanical property and corrosion resistant rear cutting ferrule and heat treatment method.
Background technique
Rear cutting ferrule is the vitals that is used for the pipe coupling of fluid pipe-line connection, this product is applied in all trades and professions such as oil, chemical industry, papermaking, food, pharmacy, aviation, transportation widely, for etch-proof requirement, rear cutting ferrule adopts the Austenitic Stainless Steel manufacturing in a large number, but the intensity of austenitic stainless steel material own is low, poor mechanical property, the bite-resistant performance is poor, can not adapt to the requirement of pressure and sealing.Also there is pair rear cutting ferrule to heat-treat to improve intensity, but all is to have sacrificed decay resistance, make corrosion resistance significantly worsen, can not reach required requirement.
Summary of the invention
Technical problem to be solved by this invention is at above-mentioned the deficiencies in the prior art, and a kind of good mechanical property and corrosion resistant rear cutting ferrule and heat treatment method are provided.
For solving the problems of the technologies described above, the present invention adopts following technological scheme, and it comprises that front end is the back card body of the conical surface, is compounded with one on the card body of described back and strengthens the solid solution infiltration layer.
The back card adopts the Austenitic Stainless Steel manufacturing, Austenitic Stainless Steel self has good decay resistance, block a compound reinforcement solid solution infiltration layer on the body then in the back, hardness of this layer and wear resistance all have raising by a relatively large margin. and micro-penetration hardness reaches 1000HV, compare with the protocorm material, wear resistance has improved 2～3 times.
The thickness of described reinforcement solid solution infiltration layer is 10～30 μ m.
Described reinforcement solid solution infiltration layer is carburized case, nitriding layer or carbonitrided case.
The tapering of the front end conical surface of described back card body is 60～80 °, the rear end of back card body and the acting surface camber face of Female connector fittings.
Heat treatment method of the present invention is at pressure 100～150Pa, under 300～450 ℃ of the temperature back card body is carried out carburizing, nitriding or carbonitriding and handles 60～120 minutes time.
Utilize the low pressure plasma glow discharge technique between 300～450 ℃, Austenitic Stainless Steel to be carried out nitriding, carburizing or carbonitriding surface peening, at pressure 100～150Pa, handle the nitrogen supersaturated austenite or the carbon supersaturated austenite solid solution strengthened layer that can obtain the above high hardness of thickness 10 μ m in 60～120 minutes.
Compared with prior art, the present invention has following characteristics:
1, a compound reinforcement solid solution infiltration layer on rear cutting ferrule, hardness of this layer and wear resistance all have raising by a relatively large margin. and micro-penetration hardness reaches 1000HV, compares with the protocorm material, and wear resistance has improved 2～3 times, has improved the bite-resistant ability greatly.
2, strengthening the solid solution infiltration layer is nitriding layer or carburized case, utilizes the low pressure plasma glow discharge technique that Austenitic Stainless Steel is carried out low temperature nitriding, Carburization Treatment.Austenitic Stainless Steel after the processing belongs to a kind of do not have the nitrogen that chromium nitride and chromium carbide separate out or the supersaturated solid solution of carbon. and supersaturation nitrogen in this infiltration steel or carbon cause that the austenite lattice distorts, and make the hardness of infiltration layer and wear resistance that by a relatively large margin raising all be arranged.
3, strengthening the solid solution infiltration layer is carbonitrided case, because the maximum nitrogen content in the Austenitic Stainless Steel infiltration layer after handling appears at the different degree of depth respectively with maximum carbon content, the high hardness that existing ion nitriding is handled has the high permeability formation thickness of ion carburizing, glowdischarge carburizing processing and good hardness gradient again.
4, the tapering of the back card body front end conical surface is 60～80 °, the acting surface camber face of rear end and pipe coupling nut, and the point of action of control force is at the center of surface of contact.
5, at low pressure 100～150Pa, carrying out Austenitic Stainless Steel surface carburization, carburizing or carbonitriding under 300～450 ℃ of conditions of low temperature handled 60～120 minutes, can form wear resistance height, surface reforming layer that corrosion resistance is good on Austenitic Stainless Steel surface, alloying layer thickness is 10～30 μ m, mechanical property improves, and hardness obviously strengthens.
Description of drawings
Fig. 1 is the structural representation of rear cutting ferrule of the present invention.
Fig. 2 is the partial enlarged drawing of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, the present invention is elaborated, card is the back card cutting ferrule of two yoke configurations behind the present invention, as shown in Figure 1, it comprises that front end is the back card body 1 of the conical surface, be compounded with one and strengthen solid solution infiltration layer 2 on card body 1 outer surface of described back, the thickness of strengthening solid solution infiltration layer 2 is 10～30 μ m, and strengthening solid solution infiltration layer 2 can be carburized case, nitriding layer or carbonitrided case.
The tapering of the back card body front end conical surface is 60～80 °, the rear end of back card body and the acting surface camber face of Female connector fittings, and the radius of arc shaped surface is R, sees Fig. 2.
Utilize the low pressure plasma glow discharge technique to strengthen sticking into capable nitrided surface between 300～450 ℃ after to Austenitic Stainless Steel, at pressure 100～150Pa, handle the nitrogen supersaturated austenite solid solution strengthened layer of the high hardness that can obtain in 60～120 minutes about thickness 10～30 μ m. adopt X-ray diffraction, electron probe and Auger spectrometer etc. that infiltration layer is carried out structural analysis and show, when treatment temperature is lower than 450 ℃, infiltration layer is single-phase nitrogen supersaturated austenite solid solution layer, micro-penetration hardness reaches 1000HV, compare with the protocorm material, wear resistance has improved 2～3 times.
Utilize the low pressure plasma glow discharge technique sticking into capable rapid carburization surface peening after to Austenitic Stainless Steel between 300～450 ℃, at pressure 100～150Pa, handle the carbon supersaturated austenite solid solution strengthened layer of the high hardness that can obtain in 60～120 minutes about thickness 10～30 μ m. adopt X-ray diffraction, electron probe and Auger spectrometer etc. carry out structural analysis to infiltration layer and show, when treatment temperature is lower than 450 ℃, infiltration layer is single-phase carbon supersaturated austenite solid solution layer, micro-penetration hardness reaches 900HV, compare with the protocorm material, wear resistance improves, and the bite-resistant performance improves.
Utilize the low pressure plasma glow discharge technique sticking into the quick carbonitriding of row between 300～450 ℃ after to Austenitic Stainless Steel, pressure is 100～150Pa, handle the carbon and the nitrogen supersaturated austenite solid solution strengthened layer that can obtain the high hardness about thickness 10～30 μ m in 60～120 minutes, Austenitic Stainless Steel after the processing belongs to a kind of do not have the nitrogen that chromium nitride and chromium carbide separate out and the supersaturated solid solution of carbon. and supersaturation nitrogen in this infiltration steel and carbon cause that the austenite lattice distorts, and make the hardness of infiltration layer and wear resistance that by a relatively large margin raising all be arranged.
Claims (5)
1, a kind of pipe joint rear cutting ferrule comprises that front end is the back card body (1) of the conical surface, it is characterized in that being compounded with on the described back card body (1) one and strengthens solid solution infiltration layer (2).
2, rear cutting ferrule according to claim 1, the thickness that it is characterized in that described reinforcement solid solution infiltration layer (2) are 10～30 μ m.
3, rear cutting ferrule according to claim 1 is characterized in that described reinforcement solid solution infiltration layer (2) is nitriding layer, carburized case or carbonitrided case.
4, rear cutting ferrule according to claim 1 is characterized in that the tapering of the front end conical surface of described back card body (1) is 60～80 °, the rear end of back card body (1) and the acting surface camber face of Female connector fittings.
5, a kind of heat treatment method of realizing the described rear cutting ferrule of claim 1 is characterized in that at pressure 100～150Pa, under 300～450 ℃ of the temperature back card body (1) is carried out carburizing, nitriding or carbonitriding and handles 60～120 minutes time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100246069A CN100451423C (en) | 2007-06-22 | 2007-06-22 | Pipe joint rear cutting ferrule and heat processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100246069A CN100451423C (en) | 2007-06-22 | 2007-06-22 | Pipe joint rear cutting ferrule and heat processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101078453A true CN101078453A (en) | 2007-11-28 |
| CN100451423C CN100451423C (en) | 2009-01-14 |
Family
ID=38906064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100246069A Expired - Fee Related CN100451423C (en) | 2007-06-22 | 2007-06-22 | Pipe joint rear cutting ferrule and heat processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100451423C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170276271A1 (en) * | 2013-12-10 | 2017-09-28 | Parker-Hannifin Corporation | Multiple layer hardness ferrule and method |
| CN113280194A (en) * | 2021-05-25 | 2021-08-20 | 宁波天生密封件有限公司 | Double-clamping sleeve for pipeline joint and preparation method thereof |
| CN113294603A (en) * | 2021-05-25 | 2021-08-24 | 宁波天生密封件有限公司 | Double-clamping sleeve pipeline joint and preparation method thereof |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2633076B2 (en) * | 1990-10-04 | 1997-07-23 | 大同ほくさん株式会社 | Hard austenitic stainless steel screw and its manufacturing method |
| TW237484B (en) * | 1992-09-16 | 1995-01-01 | Daido Oxygen | |
| CN1065331C (en) * | 1997-04-23 | 2001-05-02 | 孔繁梅 | Sealing method for sleeved hydraulic pipe joint |
| CN2365495Y (en) * | 1998-10-27 | 2000-02-23 | 王华胜 | Cutting sleeve type pipe coupling sealed with rubber sealing ring |
| CN2553223Y (en) * | 2002-06-28 | 2003-05-28 | 汤尚彬 | Fast joint for car nylon pipe air brake system |
| JP2007131921A (en) * | 2005-11-11 | 2007-05-31 | Tamura Seisakusho Co Ltd | Stainless steel, its production method, and soldering apparatus using stainless steel |
| CN1945088A (en) * | 2006-10-25 | 2007-04-11 | 阮浩丰 | Clip sleeve type pipe joint |
| CN201053545Y (en) * | 2007-06-22 | 2008-04-30 | 江苏海纳机电制造有限公司 | Pipe joint ferrule clamp |
-
2007
- 2007-06-22 CN CNB2007100246069A patent/CN100451423C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170276271A1 (en) * | 2013-12-10 | 2017-09-28 | Parker-Hannifin Corporation | Multiple layer hardness ferrule and method |
| US10605387B2 (en) * | 2013-12-10 | 2020-03-31 | Parker-Hannifin Corporation | Multiple layer hardness ferrule and method |
| CN113280194A (en) * | 2021-05-25 | 2021-08-20 | 宁波天生密封件有限公司 | Double-clamping sleeve for pipeline joint and preparation method thereof |
| CN113294603A (en) * | 2021-05-25 | 2021-08-24 | 宁波天生密封件有限公司 | Double-clamping sleeve pipeline joint and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100451423C (en) | 2009-01-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Puchi-Cabrera et al. | On the fatigue behavior of an AISI 316L stainless steel coated with a PVD TiN deposit | |
| Lin et al. | Surface nanocrystallization by surface mechanical attrition treatment and its effect on structure and properties of plasma nitrided AISI 321 stainless steel | |
| Leyland et al. | Low temperature plasma diffusion treatment of stainless steels for improved wear resistance | |
| Zhang et al. | Microstructure and corrosion behavior of TiC/Ti (CN)/TiN multilayer CVD coatings on high strength steels | |
| Stinville et al. | Plasma nitriding of 316L austenitic stainless steel: Experimental investigation of fatigue life and surface evolution | |
| Tsujikawa et al. | Effect of molybdenum on hardness of low-temperature plasma carburized austenitic stainless steel | |
| CN201053545Y (en) | Pipe joint ferrule clamp | |
| CN101078453A (en) | Pipe joint rear cutting ferrule and heat processing method | |
| CN108149183B (en) | Hard alloy with surface hardness in gradient distribution and preparation method thereof | |
| CN101648334A (en) | Manufacturing technique of austenitic stainless steel cold-rolled plate with good surface performance | |
| CN101625056B (en) | Double-ferrule type pipe joint of double-sealing and double-fastening support and using method thereof | |
| JP2005531694A (en) | Surface modified stainless steel | |
| Wang et al. | Significant acceleration of nitriding kinetics in pure iron by pressurized gas treatment | |
| Yang et al. | Microstructural and tribological characterization of plasma-and gas-nitrided 2Cr13 steel in vacuum | |
| CN105950834A (en) | Surface treatment process of stainless steel machined product | |
| EP3502313B1 (en) | Method for preparing an anti-coking crystalline material based on a stainless steel surface | |
| Lu et al. | Enhancement of wear resistance of AISI 1045 steel by a two-step plasma treatment | |
| Zhang et al. | Surface integrity and tribological behavior of 17Cr2Ni2MoVNb steel under combined carburizing treatment and ultrasonic rolling | |
| CN114231895B (en) | Austenitic stainless steel high-performance low-temperature high-efficiency ion composite infiltration surface modification method | |
| CN201448461U (en) | Valve spool of valve | |
| CN201448460U (en) | Valve rod for needle-typed stop valve | |
| JP5614887B2 (en) | Method for improving fatigue strength of cast iron material | |
| EP3502302A1 (en) | Nitriding process for carburizing ferrium steels | |
| WO2012073629A1 (en) | Method for improving fatigue strength of cast iron material | |
| CN113201684B (en) | Antibacterial thin-wall stainless steel pipe and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090114 Termination date: 20190622 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |