KR20050102775A - Valve disk and the manufacture method - Google Patents
Valve disk and the manufacture method Download PDFInfo
- Publication number
- KR20050102775A KR20050102775A KR1020040028000A KR20040028000A KR20050102775A KR 20050102775 A KR20050102775 A KR 20050102775A KR 1020040028000 A KR1020040028000 A KR 1020040028000A KR 20040028000 A KR20040028000 A KR 20040028000A KR 20050102775 A KR20050102775 A KR 20050102775A
- Authority
- KR
- South Korea
- Prior art keywords
- support
- valve
- flow control
- bolt
- control valve
- Prior art date
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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/02—Pretreatment of the material to be coated
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/24—Nitriding
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
Abstract
본 발명은 플랜지 설비 중의 설치되어 관내로 이송되는 유체를 이송량을 조절하도록 한 유량조절밸브의 밸브디스크에 관한 것으로, 밸브디스크의 표면을 탄화처리함으로써, 밸브 디스크의 강도를 높이도록 하고, 밸브 디스크의 내마모성과 내식성, 그리고 윤활성을 향상시킬 수 있기 때문에, 마모와 부식에 강한 여타 금속을 사용할 필요가 없이, 제작비용을 절감할 수 있을 뿐만 아니라, 유량 조절밸브의 고장과 오동작을 미연에 방지하고, 사용 수명을 최대한 연장하도록 한 유량조절밸브의 밸브디스크에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve disc of a flow regulating valve, which is installed in a flange facility and adjusts a conveying amount of a fluid conveyed into a pipe. The present invention relates to carbonizing a surface of a valve disc, thereby increasing the strength of the valve disc, and It can improve wear resistance, corrosion resistance, and lubricity, so that it is possible to reduce manufacturing costs without using other metals resistant to abrasion and corrosion, and to prevent and prevent failure and malfunction of flow control valves. It relates to a valve disc of the flow control valve to maximize the life.
본 발명은 각종 플랜지 설비에 설치되는 유량 조절밸브의 밸브 디스크에 있어서,The present invention provides a valve disk of a flow control valve installed in various flange facilities,
표면을 탄화처리로 강화한 탄화처리층과, 측면의 중앙 부위에 관통, 형성된 통공과, 상기 지지대와 볼트, 결합되도록 볼트공을 구비한 결합부를 형성한 디스크판과;A disk plate having a carbonization layer having a carbonized surface, a through hole formed through the central portion of the side surface, and a coupling part having a bolt hole to be coupled to the support and the bolt;
표면을 탄화처리로 강화한 지지대 탄화처리층과, 일측에 작동기에 결합되도록 한 체결부와, 상기 결합부의 볼트공에 일치되어 관통된 볼트 관통공을 형성한 지지대로;A support base having a carbonization layer reinforced with a carbonization treatment, a fastening part adapted to be coupled to an actuator on one side, and a bolt through hole coincident with the bolt hole of the coupling part;
구성되는 것을 특징으로 한다.It is characterized in that the configuration.
Description
본 발명은 플랜지 설비에 설치되는 유량조절밸브에 밸브디스크와 그 제조방법에 관한 것으로, 특히 밸브디스크의 표면에 질화처리층을 형성함으로써, 밸브디스크의 내식성과 내마모성, 그리고 윤활성을 보다 향상시킬 수 있을 뿐만 아니라, 밸브디스크의 강도가 강화되기 때문에, 유량조절밸브의 사용 수명을 최대한 연장할 수 있도록 한 유량조절밸브의 밸브디스크와 그 제조방법에 관한 것이다.The present invention relates to a valve disc and a method for manufacturing the same in a flow control valve installed in a flange facility, in particular, by forming a nitriding layer on the surface of the valve disc, it is possible to further improve the corrosion resistance, wear resistance, and lubricity of the valve disc In addition, since the strength of the valve disc is strengthened, the present invention relates to a valve disc of the flow control valve and a method of manufacturing the flow control valve to maximize the service life of the flow control valve.
일반적으로 각종의 유체를 이송하도록 한 플랜지 설비에는 이러한 이송을 제어하도록 한 밸브를 설치하고 있다.Generally, the flange facility which conveys various fluids is provided with the valve which controls this conveyance.
이러한 유량조절밸브는 다양한 기능으로 제작되고 있으며, 내부의 밸브디스크 등의 작동으로 유량을 제어, 조절하도록 하고 있다.These flow control valves are manufactured with various functions, and to control and regulate the flow rate by the operation of the valve disc inside.
상기한 유량조절밸브의 밸브디스크는 그 기능의 특성상, 내마모성과 내식성, 그리고 윤활성 등이 우수하도록 제작되어야 하는 실정이었다.The valve disc of the flow regulating valve has to be manufactured to be excellent in wear resistance, corrosion resistance, lubricity, etc., due to its function.
한편, 각종의 금속기계 부품의 표면처리 방법 중에, 염욕질화처리 방법은 최근들어 사용하는 방법으로, 제품의 내마모성과 내식성, 그리고 윤활성 등을 향상시키도록 하고, 금속 제품의 강도가 우수하고, 표면처리 후의 제품의 변형을 최소화 하도록 한 것이다.On the other hand, among various methods of surface treatment of metal machine parts, the salt bath nitriding treatment is a method recently used to improve the wear resistance, corrosion resistance, lubricity, etc. of the product, and the strength of the metal product is excellent, and the surface This is to minimize deformation of the product after treatment.
이러한 질화처리 방법은 가스 질화처리와 플라즈마 질화처리 등이 있고, 규소 세라믹 질화처리와 알루미늄 등의 비금속계의 질화처리 등의 다양한 표면처리 방법이 연구, 개발되고 있으며, 작업인력과 질화시간을 단축하고, 친환경적인 질화처리 방법이 시도되고 있는 실정이다.Such nitriding treatments include gas nitriding and plasma nitriding, and various surface treatments such as silicon ceramic nitriding and non-metallic nitriding such as aluminum have been researched and developed. However, environmentally friendly nitriding treatment is being attempted.
그러나, 상기한 종래의 유량 조절밸브의 밸브 디스크는, 밸브 디스크의 표면을 별도의 처리를 하지 않기 때문에, 마모와 부식이 심하여, 유량 조절밸브 자체의 고장과 오동작으로 기계의 수명을 단축하였으며, 다른 종류의 금속으로 대체할 경우여, 제작비용이 증가되는 문제점이 발생하였다.However, since the valve disc of the conventional flow control valve does not treat the surface of the valve disc separately, the wear and corrosion are severe, which shortens the life of the machine due to failure and malfunction of the flow control valve itself. When replacing with a metal of the kind, a problem arises that the manufacturing cost is increased.
또한, 상기한 종래의 유량 조절밸브의 밸브 디스크 등과 같이 마모와 부식이 많은 기계 부품의 표면을 탄화처리하여, 그 부품의 강도와 내마모성, 그리고 내식성과 윤활성을 향상시키도록 하는 연구와 시도가 부족한 실정이었다.In addition, there is a lack of research and attempt to carbonize the surface of mechanical parts with high wear and corrosion, such as the valve disk of the conventional flow control valve, to improve the strength, wear resistance, corrosion resistance and lubricity of the parts. It was.
따라서, 본 발명은 플랜지 설비 중의 유량조절밸브의 밸브디스크의 표면을 탄화처리함으로써, 밸브 디스크의 강도를 높이도록 하고, 밸브 디스크의 내마모성과 내식성, 그리고 윤활성을 향상시킬 수 있기 때문에, 마모와 부식에 강한 여타 금속을 사용할 필요가 없어, 제작 비용을 절감할 수 있을 뿐만 아니라, 유량 조절 밸브의 고장과 오동작을 미연에 방지하고, 사용 수명을 최대한 연장하도록 하는데 그 목적이 있는 것이다.Accordingly, the present invention can increase the strength of the valve disk by carbonizing the surface of the valve disk of the flow regulating valve in the flange facility, and improve the wear resistance, corrosion resistance, and lubricity of the valve disk. The purpose is not only to reduce the production cost, but also to prevent the failure and malfunction of the flow control valve and to extend the service life as much as possible.
본 발명은 각종 플랜지 설비에 설치되는 유량 조절밸브의 밸브 디스크에 있어서,The present invention provides a valve disk of a flow control valve installed in various flange facilities,
표면을 탄화처리로 강화한 탄화처리층과, 측면의 중앙 부위에 관통, 형성된 통공과, 상기 지지대와 볼트, 결합되도록 볼트공을 구비한 결합부를 형성한 디스크판과;A disk plate having a carbonization layer having a carbonized surface, a through hole formed through the central portion of the side surface, and a coupling part having a bolt hole to be coupled to the support and the bolt;
표면을 탄화처리로 강화한 지지대 탄화처리층과, 일측에 작동기에 결합되도록 한 체결부와, 상기 결합부의 볼트공에 일치되어 관통된 볼트 관통공을 형성한 지지대로;A support base having a carbonization layer reinforced with a carbonization treatment, a fastening part adapted to be coupled to an actuator on one side, and a bolt through hole coincident with the bolt hole of the coupling part;
구성되는 것을 특징으로 한다.It is characterized in that the configuration.
도 1은 본 발명을 보인 사시도이고, 도 2는 본 발명의 단면을 보인 단면도이고, 도 3은 본 발명의 제조 방법을 보인 순서도이다.1 is a perspective view showing the present invention, Figure 2 is a cross-sectional view showing a cross section of the present invention, Figure 3 is a flow chart showing a manufacturing method of the present invention.
이하 본 고안에 따른 구성 및 작용 효과를 첨부된 도면을 참조하여 상세히 설명하면 다음과 같다.Hereinafter, the configuration and operation effects according to the present invention will be described in detail with reference to the accompanying drawings.
도 1과 도 2에 도시된 바와 같이, 본 고안은 관 내부에서 회동하여 유량을 조절하도록 한 디스크 판(10)과, 상기 디스크판(10)을 체결되어 회동시키도록 한 지지대(20)로 구성된다.As shown in Figure 1 and 2, the present invention is composed of a disk plate 10 to rotate the inside of the pipe to adjust the flow rate, and a support 20 for fastening and rotating the disk plate 10. do.
상기 디스크 판(10)은 표면을 탄화처리로 강화한 탄화처리층(11)과, 측면의 중앙 부위에 관통, 형성된 통공(12)과, 상기 지지대(20)와 볼트, 결합되도록 한 결합부(13)를 형성한다.The disk plate 10 has a carbonization layer 11 whose surface is carbonized, a through-hole 12 formed through the central portion of the side surface, and a coupling part 13 which allows the support 20 to be bolted together. ).
상기 결합부(13)는 볼트가 관통, 체결되도록 한 볼트공(14)을 형성한다.The coupling portion 13 forms a bolt hole 14 through which the bolt penetrates and is fastened.
상기 지지대(20)는 표면을 탄화처리로 강화한 지지대 탄화처리층(21)과, 일측에 작동기에 결합되도록 한 체결부(22)와, 상기 결합부(13)의 볼트공(14)에 일치되어 관통된 볼트 관통공(23)을 형성한다.The support 20 is coincided with a support carbonization layer 21 whose surface is carbonized, a fastening portion 22 coupled to an actuator on one side, and a bolt hole 14 of the coupling portion 13. A through bolt through hole 23 is formed.
미설명 부호 1은 볼트이다.Reference numeral 1 is a bolt.
이상에서 설명한 바와 같이 본 고안의 작용 및 효과를 첨부된 도면에 의거하여 살펴보면 다음과 같다.As described above, the operation and effects of the present invention will be described with reference to the accompanying drawings.
도 1과 도 2에 도시된 바와 같이, 플랜지 설비에 설치된 유량 조절밸브에서, 상기 지지대(20)를 회동시키도록 한 작동 기구에 상기 체결부(22)가 결합되고, 상기 작동기구의 동작에 의해 상기 지지대(20)가 회동함에 따라, 관 내부에 장치된 상기 디스크 판(10)이 회동하게 된다.1 and 2, in the flow control valve installed in the flange installation, the fastening portion 22 is coupled to the operating mechanism for rotating the support 20, by the operation of the operating mechanism As the support 20 rotates, the disk plate 10 mounted inside the pipe rotates.
이때, 상기 디스크 판(10)의 통공(12)에 상기 지지대(20)를 관통시키고, 상기 결합부(13)의 볼트공(14)과 상기 지지대(20)의 볼트 관통공(23)이 일치되어, 상기 볼트(1)로 견고하게 고정되기 때문에, 상기 지지대(20)의 회동에 따라 상기 디스크 판(10)이 회동하게 되면서, 관 내부로 이송되는 유량을 조절할 수 있는 것이다.At this time, the support 20 is passed through the through hole 12 of the disc plate 10, and the bolt hole 14 of the coupling part 13 and the bolt through hole 23 of the support 20 coincide with each other. And, since it is firmly fixed by the bolt (1), the disk plate 10 is rotated in accordance with the rotation of the support 20, it is possible to adjust the flow rate transferred into the tube.
그리고, 상기 디스크 판(10)과 지지대(20)의 탄화처리층(11, 21)으로 장기간 사용에 따른 마모를 최소화하고, 관내의 이송물에 따른 부식을 방지할 수 있으며, 부드럽고 윤활성으로 원활하게 회동될 수 있는 것이다.In addition, the carbonized layers 11 and 21 of the disk plate 10 and the support 20 can minimize the wear caused by long-term use, prevent corrosion due to the conveying material in the pipe, and are smooth and smooth. It can be rotated.
이하, 본 발명에 따른 실시예를 첨부된 도면을 참조하여 상세히 설명하면 다음과 같다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
단조 공정 (M)Forging Process (M)
상기 디스크 판(10)과 지지대(20)를 프레스 등으로 가압하여, 단조처리하고, 성형, 가공하도록 한다.The disk plate 10 and the support 20 are pressurized by a press or the like, forging, forming and processing.
세척 및 예열 공정 (C)Cleaning and Preheating Process (C)
상기 디스크 판(10)과 지지대(20)를 세척액으로 표면의 이물질 등을 제거하도록 하고, 약 30분 동안 섭씨 400도의 고온으로 예열시키도록 한다.The disk plate 10 and the support 20 to remove foreign matters on the surface with a cleaning solution, and preheated to a high temperature of 400 degrees Celsius for about 30 minutes.
질화 및 산화 공정 (T)Nitriding and Oxidation Process (T)
일정 온도로 예열된 상기 디스크 판(10)과 지지대(20)를 질화염로로 이송하여, 섭씨 550도 ∼ 600도의 고온으로 약 1∼ 2시간 가량 질화처리하고, 산화염로로 이송하여 약 섭씨 390도의 고온으로 약 15분 가량 산화처리하도록 한다.The disk plate 10 and the support 20 preheated to a predetermined temperature are transferred to a nitride salt furnace, nitrided for about 1 to 2 hours at a high temperature of 550 to 600 degrees Celsius, and transferred to an oxidized salt to about 390 degrees Celsius. Oxidation is performed for about 15 minutes at high temperature.
냉각 및 마감 공정 (F)Cooling and Finishing Process (F)
냉각조로 이송하여 약 20분 가량 냉각시키고, 표면의 광택 등을 마감처리하도록 하고, 상기 디스크 판과 지지대를 볼트를 이용하여 조립, 완성하도록 한다.Transfer to a cooling tank to cool for about 20 minutes, and to finish the gloss of the surface, and to assemble and complete the disk plate and the support using a bolt.
따라서, 본 발명은 플랜지 설비 중의 설치되어 관내로 이송되는 유체를 이송량을 조절하도록 한유량조절밸브의 밸브디스크에 관한 것으로, 밸브디스크의 표면을 탄화처리함으로써, 밸브 디스크의 강도를 높이도록 하고, 밸브 디스크의 내마모성과 내식성, 그리고 윤활성을 향상시킬 수 있기 때문에, 마모와 부식에 강한 여타 금속을 사용할 필요가 없어, 제작비용을 절감할 수 있을 뿐만 아니라, 유량 조절밸브의 고장과 오동작을 미연에 방지하고, 사용 수명을 최대한 연장하도록 한 유익한 발명인 것이다.Accordingly, the present invention relates to a valve disk of a flow control valve installed in a flange facility to adjust the amount of transport of the fluid to be conveyed into the pipe, by carbonizing the surface of the valve disk to increase the strength of the valve disk, The wear resistance, corrosion resistance, and lubricity of the disc can be improved, eliminating the need for other metals resistant to wear and corrosion, reducing manufacturing costs, and preventing failure and malfunction of the flow control valve. It is a beneficial invention to extend the service life as much as possible.
도 1은 본 발명을 보인 사시도1 is a perspective view of the present invention
도 2는 본 발명의 단면을 보인 단면도2 is a cross-sectional view showing a cross section of the present invention.
도 3은 본 발명의 제조 방법을 보인 순서도Figure 3 is a flow chart showing a manufacturing method of the present invention
도면의 주요부분에 대한 부호의 설명Explanation of symbols for main parts of the drawings
10 : 디스크 판 11 : 탄화처리층10 disc plate 11: carbonized layer
12 : 통공 13 : 볼트공12: through hole 13: bolt hole
20 : 지지대 21 : 지지대 탄화처리층20: support 21: support carbonized layer
22 : 체결부 23 : 볼트 관통공22: fastening portion 23: bolt through hole
M : 단조 공정 C : 세척 및 예열 공정M: Forging Process C: Washing and Preheating Process
T : 질화 및 산화 공정 F : 냉각 및 마감 공정T: Nitriding and Oxidation Process F: Cooling and Finishing Process
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020040028000A KR20050102775A (en) | 2004-04-22 | 2004-04-22 | Valve disk and the manufacture method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020040028000A KR20050102775A (en) | 2004-04-22 | 2004-04-22 | Valve disk and the manufacture method |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR20-2004-0011429U Division KR200360100Y1 (en) | 2004-04-23 | 2004-04-23 | Valve disk |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20050102775A true KR20050102775A (en) | 2005-10-27 |
Family
ID=37280864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020040028000A KR20050102775A (en) | 2004-04-22 | 2004-04-22 | Valve disk and the manufacture method |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR20050102775A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100666199B1 (en) * | 2006-02-24 | 2007-01-09 | 임용고 | A manufacturing process of disk for butterfly valve |
| KR100800976B1 (en) * | 2006-07-24 | 2008-02-11 | 구종환 | Top Entry Type Metal Seat Ball Valve Structure |
| KR101580286B1 (en) | 2015-06-11 | 2015-12-24 | 공준식 | Flow control valve |
-
2004
- 2004-04-22 KR KR1020040028000A patent/KR20050102775A/en not_active Application Discontinuation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100666199B1 (en) * | 2006-02-24 | 2007-01-09 | 임용고 | A manufacturing process of disk for butterfly valve |
| KR100800976B1 (en) * | 2006-07-24 | 2008-02-11 | 구종환 | Top Entry Type Metal Seat Ball Valve Structure |
| KR101580286B1 (en) | 2015-06-11 | 2015-12-24 | 공준식 | Flow control valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20210404515A1 (en) | Material treatments for diamond-on-diamond reactive material bearing engagements | |
| US7824733B2 (en) | Wear-resistant coating and process for producing it | |
| JP5669390B2 (en) | Abrasion resistant coating and manufacturing method therefor | |
| US20070224349A1 (en) | Wear-Resistant Coating and Method for Producing Same | |
| JP2008510863A5 (en) | ||
| US20060049035A1 (en) | Wear-resistant coating and process for producing it | |
| WO2015090130A1 (en) | Plug of pressure-balance oil seal plug valve and plug surface treatment process | |
| US20140050932A1 (en) | Method for producing a hardened, coated metal component | |
| US20080233303A1 (en) | Coatings for metal-metal seal surfaces | |
| KR20140019947A (en) | Coating material for aluminum die casting and the method for manufacturing thereof | |
| JPH0224475A (en) | Rotor bit | |
| KR20050102775A (en) | Valve disk and the manufacture method | |
| CN110616401B (en) | Preparation method of wear-resistant hydraulic pump part | |
| CN113584438A (en) | Periodic multilayer structure coating band saw blade and preparation method and application thereof | |
| KR200360100Y1 (en) | Valve disk | |
| CN201448460U (en) | Valve rod for needle-typed stop valve | |
| CN203904393U (en) | Water-cooling-free deformation-resistant furnace roller | |
| NO311333B1 (en) | Continuous extrusion device | |
| US20150337429A1 (en) | Treatment to enhance structural components | |
| CN112501554A (en) | Preparation method of antifriction bearing wear-resistant film layer | |
| CN201448461U (en) | Valve spool of valve | |
| US11661647B2 (en) | Integrated surface treatments and coatings for artificial lift pump components | |
| JP7303207B2 (en) | A layer of hard material on a metal substrate | |
| JPH06159230A (en) | Swash plate type piston pump or motor | |
| JPH11294478A (en) | Joint for driving support roll of hot-dip aluminum plating bath |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| E601 | Decision to refuse application |