CN104948765B - Cryogenic ball valve - Google Patents
Cryogenic ball valve Download PDFInfo
- Publication number
- CN104948765B CN104948765B CN201510409771.0A CN201510409771A CN104948765B CN 104948765 B CN104948765 B CN 104948765B CN 201510409771 A CN201510409771 A CN 201510409771A CN 104948765 B CN104948765 B CN 104948765B
- Authority
- CN
- China
- Prior art keywords
- spheroid
- valve
- fluid
- ball valve
- fluid passage
- 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.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0605—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor with particular plug arrangements, e.g. particular shape or built-in means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
- F16K31/535—Mechanical actuating means with toothed gearing for rotating valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0647—Spindles or actuating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0657—Particular coverings or materials
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The present invention relates to a kind of cryogenic ball valve, belong to the technical field of valve.The cryogenic ball valve of the present invention includes valve body and spheroid；Valve body includes valve seat and fluid passage, and fluid passage has fluid intake and fluid issuing；Spheroid is positioned at fluid passage, and spheroid is arranged on valve seat and the formation sealing surface of seat that contacts with described valve seat；Spheroid includes an interconnection, and when making the axis of described interconnection align with the axis of described fluid passage by rotating described spheroid, the most described fluid intake, fluid issuing are in maximum flow state；When spinning ball makes the axis of interconnection angled with the axis of fluid passage, then the fluid circulation reducing or being closed between fluid intake and fluid issuing.The cryogenic ball valve of the present invention passes through turbine and sector section transmission, it is possible to the unlatching of reliable and secure ground control valve and Guan Bi；And processed by cure process and specific coating so that ball valve is low temperature resistant, impact resistance, and good airproof performance, structural safety is reliable.
Description
Technical field
The present invention relates to the technical field of valve, it is more particularly related to a kind of cryogenic ball valve.
Background technology
In prior art, cryogenic ball valve generally includes the parts such as valve body, valve gap, spheroid, valve rod, and gland；Wherein, spheroid
Being arranged in valve body, valve gap is arranged on valve body, and valve gap and valve body are provided with to fix both studs, and gland is arranged on
On valve body, gland and valve body being provided with to fix both screws, valve rod is fastened in gland, stem bottom and spheroid top
Portion connects.
Cryogenic ball valve is primarily adapted for use on the chemical plant installations such as ethylene, liquefied natural gas, the liquid low temperature medium of output such as ethylene, liquid
Oxygen, liquid hydrogen etc..In the prior art, the sealing between valve gap and the valve body of cryogenic ball valve, between gland and valve body is poor,
The most also the generation of the problems such as securing member inefficacy it is easily caused.
Summary of the invention
In order to solve above-mentioned technical problem of the prior art, it is an object of the invention to provide a kind of cryogenic ball valve.
A kind of cryogenic ball valve, including valve body and spheroid, it is characterised in that: described valve body includes valve seat and is positioned at the stream above valve seat
Body passage, described fluid passage has the fluid intake being positioned at one end and the fluid issuing being positioned at the other end；Described spheroid is positioned at institute
State in fluid passage, and described spheroid is arranged on described valve seat and the formation sealing surface of seat that contacts with described valve seat；Described
Spheroid includes an interconnection, makes the axis of described interconnection and the axis pair of described fluid passage by rotating described spheroid
Qi Shi, the most described fluid intake, fluid issuing are in maximum flow state；When the described spheroid of rotation makes the axle of described interconnection
When line is angled with the axis of described fluid passage, then the fluid stream reducing or being closed between fluid intake and fluid issuing
Flux.
Wherein, described cryogenic ball valve also includes that driver part, described driver part include drive shaft, sector section and turbine；
Described driving the tip of the axis is installed and secured within the upper end of described spheroid, and the lower end of described spheroid is arranged on described by swivel bolt
On valve seat；Described sector section is arranged on the top of described drive shaft upper end by bolt；Described turbine drives described sector section,
And then drive described drive shaft to rotate, and then spheroid is driven to rotate to realize being turned on and off of valve.
Wherein, described drive shaft is 1Cr18Ni9Ti austenitic stainless steel.Described drive shaft is 980～1050 DEG C of solution treatment
0.5～1.0 hour, after solution treatment, water-cooled was to less than 350 DEG C, then carries out stabilizing treatment at 850～880 DEG C.
Wherein, described spheroid is made up of hardening steel, and the chemical composition of described hardening steel is as follows: the C of 0.05～0.08wt%,
The Si of 0.20～1.5wt%, the Mn of 0.30～1.50wt%, the Ni of 0.20～0.50wt%, the Cr of 2.5～3.0wt%, 0.10～0.25wt%
Al, the Mo of 0.01～0.05wt%, the N of 0.005～0.015wt%, the Ti of 0.02～0.10wt% of Cu, 0.01～0.05wt%,
The Zr of 0.002～0.005wt%；Surplus is Fe and inevitable impurity.
Wherein, [Cu], [Ni], [Mo] and [Cr] represents the mass percent of Cu, Ni, Mo, Cr respectively, and they meet
With lower inequality: 2.5 [Cu]+1.2 [Ni]+4.9 [Mo]+1.1 [Cr] >=3.4.
Wherein, described spheroid, through forging molding, is then heated to 800～850 DEG C of insulations 30～60min, air-cooled；Then exist
1000～1050 DEG C carry out high-temperature carburizing, and carbon potential is 0.6～0.8wt%, and carburizing time is 1.5～2.0 hours, then in temperature is
The oil of 100～150 DEG C quenches；Then carrying out temper at 250～320 DEG C, the temper time is 1.5～2.5 hours.
Wherein, described spherome surface and sealing surface of seat surface are each formed with low friction hard coat.
Wherein, described low friction hard coat consist of 10.0～15.0wt% tungsten carbide, 3.0～5.0wt% molybdenum bisuphide,
The zirconium of the chromium of aluminum, 10.0～12.0wt%, 0.1～the 1.0wt% of 12.0～15.0wt%, and the nickel of surplus.
Cryogenic ball valve of the present invention has the advantages that
Cryogenic ball valve of the present invention passes through turbine and sector section transmission, it is possible to the unlatching of reliable and secure ground control valve and Guan Bi；
And processed by cure process and specific coating so that described ball valve is low temperature resistant, impact resistance, and good airproof performance, structure is pacified
Complete reliable.
Accompanying drawing explanation
Fig. 1 is the cross section structure schematic diagram of cryogenic ball valve of the present invention.
Fig. 2 is the cross section structure schematic diagram of driver part in cryogenic ball valve.
Detailed description of the invention
Below with reference to specific embodiment, cryogenic ball valve of the present invention is further elaborated, to help the technology of this area
Personnel have more complete, accurate and deep understanding to inventive concept, the technical scheme of the present invention.
Embodiment 1
As shown in accompanying drawing 1～2, the cryogenic ball valve described in the present embodiment, including valve body 10, spheroid 20 and driver part 30.Its
In, described valve body 10 includes valve seat 11 and is positioned at the fluid passage 12 above valve seat, and described fluid passage 12 has and is positioned at one
The fluid intake 13 of end and the fluid issuing 14 being positioned at the other end；Described spheroid 20 is positioned at described fluid passage 12, and
Described spheroid 20 is arranged on described valve seat 11 and contacts with described valve seat 11 and forms sealing surface of seat 15.Described spheroid 20
Including an interconnection 21, the axis of described interconnection is made to align with the axis of described fluid passage by rotating described spheroid
Time, the most described fluid intake, fluid issuing are in maximum flow state；When the described spheroid of rotation makes the axis of described interconnection
Time angled with the axis of described fluid passage, then the fluid circulation reducing or being closed between fluid intake and fluid issuing
Amount.Described driver part 30 includes drive shaft 31, sector section 32 and turbine 33；The end of described drive shaft 31 is installed
And it being fastened on the upper end of described spheroid 20, the lower end of described spheroid 20 is arranged on described valve seat 11 by swivel bolt 16；
Described sector section 32 is arranged on the top of described drive shaft 31 upper end by bolt；Described turbine 33 drives described sector section
32, and then drive described drive shaft 31 to rotate, and then drive spheroid 20 rotate around the central shaft of swivel bolt 16 and realize valve
Be turned on and off, and described turbine can be driven by motor (not shown).In the present embodiment, described drive shaft
For 1Cr18Ni9Ti austenitic stainless steel.Described drive shaft was 980～1050 DEG C of solution treatment 0.5～1.0 hours, after solution treatment
Water-cooled, to less than 350 DEG C, then carries out stabilizing treatment at 850～880 DEG C.Described spheroid is made up of hardening steel, and described ball
Surface and sealing surface of seat surface are each formed with low friction hard coat.
Embodiment 2
In the present embodiment, in order to give described spheroid mechanical system energy in low temperature environment, especially cold-hot impacts and low
The mechanical properties such as warm property, described spheroid uses hardening steel forging to form.The chemical composition of described hardening steel is as follows:
The C of 0.05～0.08wt%, the Si of 0.20～1.5wt%, the Mn of 0.30～1.50wt%, the Ni of 0.20～0.50wt%, 2.5～3.0wt%
The Mo (preferably 0.01～0.02wt%) of Cr, the Al of Cu, 0.01～the 0.05wt% of 0.10～0.25wt%, 0.01～0.05wt%,
The N of 0.005～0.015wt%, the Ti of 0.02～0.10wt%, the Zr of 0.002～0.005wt%；Surplus is Fe and the most miscellaneous
Matter.Wherein, [Cu], [Ni], [Mo] and [Cr] represents the mass percent of Cu, Ni, Mo, Cr respectively, and they meet
With lower inequality: 2.5 [Cu]+1.2 [Ni]+4.9 [Mo]+1.1 [Cr] >=3.4.
Described spheroid, through forging molding, is then heated to 800～850 DEG C of insulations 30～60min, air-cooled；Then at 1000～1050 DEG C
Carrying out high-temperature carburizing, carbon potential is 0.6～0.8wt%, and carburizing time is 1.5～2.0 hours, then at the oil that temperature is 100～150 DEG C
In quench；Then carrying out temper at 250～320 DEG C, the temper time is 1.5～2.5 hours.Described in the present embodiment
Hardening steel when the composition of Cu, Ni, Mo, Cr meets 2.5 [Cu]+1.2 [Ni]+4.9 [Mo]+1.1 [Cr] >=3.4, pass through carburizing
Process and not only make carbide and the precipitation of a small amount of nitride create invigoration effect so that the case hardness of hardening steel is high, and
Internal toughness is good, has opposing cold cycling and the performance of thermal shock of excellence.
Embodiment 3
In the present embodiment, described spherome surface and sealing surface of seat surface are each formed with low friction hard coat, described low rub
Wipe hard coat to need to have high rigidity, low-friction coefficient concurrently, to realize, while ensureing to seal, the operating that spheroid is good.Described
Low friction hard coat consist of 10.0～15.0wt% the molybdenum bisuphide of tungsten carbide, 3.0～5.0wt%, 12.0～15.0wt%
The zirconium of the chromium of aluminum, 10.0～12.0wt%, 0.1～1.0wt%, and the nickel of surplus；The thickness of coating is generally 10～200 μm, preferably
It is 20～100 μm.Above-mentioned coating use powder stock, and by inert atmosphere ball milling make aluminum in powder stock, chromium, zirconium and
The powder diameter of nickel is below 10 μm, and the particle diameter of molybdenum bisuphide silicon and tungsten carbide is 10～20 μm.Then supersonic speed fire is utilized
Flame paint finishing sprays, and the powder feeding gas of use is N2.The technological parameter of HVOF spraying is: O2Pressure is 0.50～0.60
MPa, O2Flow is 10.0～15.0m3/h；N2Pressure 0.50～0.55MPa, N2Flow be 11.5～13.0m3/h；Spray
Being coated with distance is 250～260mm；After spraying under the hypoxic atmosphere that oxygen partial pressure is 100～1000Pa, carry out in 800～850 DEG C
Oxidizing thermal treatment, heat treatment time is 1.5～2.0 hours.Hardness HV of the abrasion-resistant hardcoat obtained by spraying0.1Can reach
1360±105.It addition, by showing the cold cycling of-50 DEG C to 100 DEG C, the low friction hard with the present embodiment composition is coated with
Layer substantially without generating more than crackles more than 20 μm, and described hard coat surface roughness can control to 0.1 μm with
Under, there is the low friction performance of excellence, it is possible to ensure the good operation of ball valve when operation.
For the ordinary skill in the art, the present invention is simply exemplarily described by specific embodiment, it is clear that this
Invention implements and is not subject to the restrictions described above, as long as the method design that have employed the present invention is various with what technical scheme was carried out
The improvement of unsubstantiality, or the most improved design by the present invention and technical scheme directly apply to other occasion, all at this
Within bright protection domain.
Claims (5)
1. a cryogenic ball valve, including valve body and spheroid, it is characterised in that: described valve body includes valve seat and is positioned at valve
Fluid passage above Zuo, described fluid passage has the fluid intake being positioned at one end and the fluid being positioned at the other end
Outlet；Described spheroid is positioned at described fluid passage, and described spheroid is arranged on described valve seat and with described
Valve seat contacts formation sealing surface of seat；Described spheroid includes an interconnection, makes by rotating described spheroid
When the axis of described interconnection aligns with the axis of described fluid passage, the most described fluid intake, fluid issuing
It is in maximum flow state；The axis of described interconnection and the axle of described fluid passage is made when rotating described spheroid
When line is angled, then the fluid circulation reducing or being closed between fluid intake and fluid issuing；Described
Spheroid is made up of hardening steel, and the chemical composition of described hardening steel is as follows: the C of 0.05～0.08wt%, 0.20～
The Si of 1.5wt%, the Mn of 0.30～1.50wt%, the Ni of 0.20～0.50wt%, the Cr of 2.5～3.0wt%,
The Al of Cu, 0.01～the 0.05wt% of 0.10～0.25wt%, the Mo of 0.01～0.05wt%, 0.005～
The N of 0.015wt%, the Ti of 0.02～0.10wt%, the Zr of 0.002～0.005wt%；Surplus is Fe and can not
The impurity avoided；[Cu], [Ni], [Mo] and [Cr] represents the mass percent of Cu, Ni, Mo, Cr respectively,
And they meet with lower inequality: 2.5 [Cu]+1.2 [Ni]+4.9 [Mo]+1.1 [Cr] >=3.4；Described spheroid warp
Cross forging molding, be then heated to 800～850 DEG C of insulations 30～60min, air-cooled；Then at 1000～1050 DEG C
Carrying out high-temperature carburizing, carbon potential is 0.6～0.8wt%, and carburizing time is 1.5～2.0 hours, then in temperature is
The oil of 100～150 DEG C quenches；Then temper, temper time are carried out at 250～320 DEG C
It it is 1.5～2.5 hours.
Cryogenic ball valve the most according to claim 1, it is characterised in that: described cryogenic ball valve also includes drive division
Part, described driver part includes drive shaft, sector section and turbine；Described driving the tip of the axis is installed and tight
Gu in the upper end of described spheroid, the lower end of described spheroid is arranged on described valve seat by swivel bolt；Described fan
Shape tooth section is arranged on the top of described drive shaft upper end by bolt；Described turbine drives described sector section, enters
And drive described drive shaft to rotate, and then spheroid is driven to rotate to realize being turned on and off of valve.
Cryogenic ball valve the most according to claim 2, it is characterised in that: described drive shaft is that 1Cr18Ni9Ti is difficult to understand
Family name's body rustless steel.
Cryogenic ball valve the most according to claim 3, it is characterised in that: described drive shaft is solid at 980～1050 DEG C
Molten process 0.5～1.0 hours, after solution treatment, water-cooled is to less than 350 DEG C, then carries out steady at 850～880 DEG C
Determining processes.
Cryogenic ball valve the most according to claim 1, it is characterised in that: described spherome surface and valve base sealing
Surface, face is each formed with low friction hard coat；Described low friction hard coat consist of 10.0～15.0wt%
The aluminum of the molybdenum bisuphide of tungsten carbide, 3.0～5.0wt%, 12.0～15.0wt%, 10.0～12.0wt% chromium,
The zirconium of 0.1～1.0wt%, and the nickel of surplus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510409771.0A CN104948765B (en) | 2015-07-13 | 2015-07-13 | Cryogenic ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510409771.0A CN104948765B (en) | 2015-07-13 | 2015-07-13 | Cryogenic ball valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104948765A CN104948765A (en) | 2015-09-30 |
| CN104948765B true CN104948765B (en) | 2016-08-24 |
Family
ID=54163672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510409771.0A Active CN104948765B (en) | 2015-07-13 | 2015-07-13 | Cryogenic ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104948765B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485386B (en) * | 2015-12-31 | 2018-08-17 | 平湖市瑞阳精密机械有限公司 | A kind of low-temperature reduced-pressure device |
| CN108302215B (en) * | 2018-04-08 | 2018-12-28 | 江苏圣泰阀门有限公司 | Ultralow temperature plug valve |
| DE202018105534U1 (en) * | 2018-09-26 | 2018-10-04 | Johnson Electric Germany GmbH & Co. KG | Valve |
| CN111561604B (en) * | 2020-05-20 | 2021-05-18 | 杭州天跃气体设备制造有限公司 | Valve with constant temperature function |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201133511Y (en) * | 2007-12-24 | 2008-10-15 | 高友 | Valve manual drive apparatus |
| CN101403076A (en) * | 2008-11-14 | 2009-04-08 | 钢铁研究总院 | Composite reinforced high-ductility ultrahigh-strength secondary hardening steel |
| CN202274191U (en) * | 2011-10-10 | 2012-06-13 | 株洲西迪硬质合金科技有限公司 | Valve and valve rod thereof |
| US20130240772A1 (en) * | 2010-09-10 | 2013-09-19 | Xamol Limited | Valve assembly and components therefore |
| CN204153203U (en) * | 2014-09-29 | 2015-02-11 | 浙江成高阀门有限公司 | Upper dress cryogenic ball valve |
-
2015
- 2015-07-13 CN CN201510409771.0A patent/CN104948765B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201133511Y (en) * | 2007-12-24 | 2008-10-15 | 高友 | Valve manual drive apparatus |
| CN101403076A (en) * | 2008-11-14 | 2009-04-08 | 钢铁研究总院 | Composite reinforced high-ductility ultrahigh-strength secondary hardening steel |
| US20130240772A1 (en) * | 2010-09-10 | 2013-09-19 | Xamol Limited | Valve assembly and components therefore |
| CN202274191U (en) * | 2011-10-10 | 2012-06-13 | 株洲西迪硬质合金科技有限公司 | Valve and valve rod thereof |
| CN204153203U (en) * | 2014-09-29 | 2015-02-11 | 浙江成高阀门有限公司 | Upper dress cryogenic ball valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104948765A (en) | 2015-09-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104948765B (en) | Cryogenic ball valve | |
| CN102418065B (en) | Composite metal carbide wear-resistant coating and preparation process thereof | |
| Fauchais et al. | Thermal sprayed coatings used against corrosion and corrosive wear | |
| US20160115797A1 (en) | Coated article and method for producing coating | |
| CN109609848B (en) | High-toughness anti-fatigue nano-precipitate reinforced martensite-austenite composite steel and preparation method thereof | |
| EP2546384B1 (en) | Steam turbine member | |
| CN103276282B (en) | Fabrication method of anti-corrosive and wear-resistant pipeline for delivering minerals | |
| Fauchais et al. | Industrial applications of thermal spraying technology | |
| CN104213067A (en) | Method for coating high-temperature corrosion and wear resistant coating layer on surface of steel material | |
| CN108531844B (en) | Preparation method of rare earth oxide doped high-temperature oxidation resistant and wear-resistant coating for H13 steel surface protection | |
| Sathish et al. | Duplex and composite coatings: a thematic review on thermal spray techniques and applications | |
| Pradeep et al. | Review on tribological and mechanical behavior in HVOF thermal-sprayed composite coatings | |
| CN105370913A (en) | Floating ball valve dedicated to high-pressure steam | |
| CN105969946B (en) | A kind of composite treatment process of shot blasting device blades | |
| JP2002544396A (en) | Structural member and method for forming a protective coating on the structural member | |
| CN101353719A (en) | Method for the surface treatment of ferritic/martensitic 9-12% cr steel | |
| CN102430455B (en) | Manufacturing method of ball-milling tank capable of bearing high pressure and resisting abrasion, | |
| Vaz et al. | Cavitation resistance of FeMnCrSi coatings processed by different thermal spray processes | |
| CN103276283B (en) | A kind of anticorrosion antiwear pipeline of conveying mineral | |
| Shelare et al. | Critical review of cold spraying coating techniques | |
| CN108754294A (en) | A kind of anti abrasive engine alloy cylinder jacket and its technique | |
| EP2971210B1 (en) | Component configured from martensitic stainless steel | |
| CN203114187U (en) | Abrasion-resistant and corrosion-resistant dual-metal composite oil pipe fully covered with coatings | |
| CN102278151B (en) | Method for manufacturing valve rod protection sleeve of supercritical pressure turbine | |
| JP2015048496A (en) | Anti-carburization turbine member, and fabrication method therefor |
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 |