CN108942120A - A kind of material and manufacturing process of throttle valve stem - Google Patents
A kind of material and manufacturing process of throttle valve stem Download PDFInfo
- Publication number
- CN108942120A CN108942120A CN201811049805.XA CN201811049805A CN108942120A CN 108942120 A CN108942120 A CN 108942120A CN 201811049805 A CN201811049805 A CN 201811049805A CN 108942120 A CN108942120 A CN 108942120A
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- China
- Prior art keywords
- throttle valve
- valve stem
- stainless steel
- treatment
- steel bars
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
It is related to the material and manufacturing process of a kind of throttle valve stem of throttle valve stem manufacturing process, it is that integrally-built throttle valve stem is made with stainless steel is machined, the surface of its end carries out thermal spraying using brass powder, and technical process includes: blanking, heat treatment, machining, thermal spraying, finishing, flaw detection.The present invention substitutes original alloy steel material using stainless steel material and integrally-built throttle valve stem is made, and technique is rigorous, and the end for being able to achieve throttle valve stem is non-microcracked, improves the erosion resistance and wearability of product, ensure that the quality and yield rate of product.
Description
Technical field:
The present invention relates to throttle valve stem manufacturing process.
Background technique
Throttle valve is the important component in high pressure pipe joint, may be implemented to adjust the size income of flow in high pressure pipe joint.
Important component of the valve rod as throttle valve, undertake flow in regulation valve body torque arm effect, valve rod during manufacture, by
Big in the tendency of hardenability of original material 42CrMo steel alloy, martensite transformation temperature is lower, is easy to produce in quenching area a large amount of crisp
Hard martensite, leads to serious embrittlement, even results in the generation of micro-crack, due to the sensibility and manufacturing process to temperature change
Not preciseness, cause the end portion of valve rod to be easy to generate micro-crack, and generate cracking phenomena during use, valve
Bar is assembly welding structure, is also easy to produce the welding defects such as weld crack.
Summary of the invention
The purpose of the present invention is to provide a kind of material of throttle valve stem and manufacturing process, it is by valve rod stainless steel
Material manufacture and valve rod manufacturing process is optimized, to realize the raising of finished product rate and quality.
To achieve the above object, the technical solution of the present invention is as follows:
Throttle valve stem of the invention is included the following steps: with stainless steel making, technical process
(1) blanking: requiring according to product size, by calculating, carries out blanking with stainless steel bars；
(2) it is heat-treated: the good stainless steel bars of blanking being subjected to solution treatment+intermediate treatment+ageing treatment mode and carry out hot place
Reason improves properties of product, solution treatment: stainless steel bars being put into and heat 1040 DEG C in heat-treatment furnace, keep the temperature 3-6h；Middle
Reason: the stainless steel bars of solution treatment are put into 0.8-10% brine media and are cooled to 120 DEG C or less；Ageing treatment: will be in
Between be heated to 500 DEG C in treated stainless steel bars merging heat-treatment furnace, heat preservation 2h comes out of the stove and is air-cooled to being furnace-cooled to 400 DEG C
Room temperature；
(3) it machines: by drawing, throttle valve stem being machined to the stainless steel bars after heat treatment；
(4) thermal spraying: carrying out thermal spraying with spray gun to the throttle valve stem tip position after processing,
Thermal spraying material: brass powder material, 180-250 DEG C of temperature；
Spray time 2-3 minutes, after spraying, throttle valve stem is quickly transferred to Slow cooling in closed box in 1 minute；
(5) it finishes: grinding machine on spraying and throttle valve stem end after cooling is refined；
(6) it detects a flaw: defect detecting test being carried out to throttle valve stem end with defectoscope, to avoid the presence of micro-crack defect.
The invention has the benefit that
(1) present invention substitutes original alloy steel material using stainless steel material and integrally-built throttle valve stem is made, and adopts
It is sprayed with brass material thermal spraying instead of first Ni60 powder and the Optimal improvements of technique, avoids the production of valve rod end head micro-crack
It is raw, improve erosion resistance, the wearability of product；
(2) present invention process is rigorous, and product qualification rate is high.
Detailed description of the invention
Fig. 1 is throttle valve stem structural schematic diagram.
Specific embodiment
Combined with specific embodiments below, the present invention will be further described.
In Fig. 1, throttle valve stem is made of the end 2 of shaft 1 and front end, be overall structure, material be 17-4PH not
Rust steel is made.
The material and production technology of one: φ 35 × 400mm throttle valve stem of embodiment manufacture
(1) blanking: requiring according to product φ 35 × 400mm size, and selection material is 17-4PH stainless steel, φ 40 × 405mm stick
Material carries out blanking；
(2) it is heat-treated: will be that 17-4PH stainless steel bars carry out solution treatment+intermediate treatment having a size of 40 × 405mm of φ, material
The mode of+ageing treatment is heat-treated, and improves properties of product, solution treatment: stainless steel bars being put into heat-treatment furnace and are added
1040 DEG C of temperature keeps the temperature 3h；Intermediate treatment: the stainless steel bars of solution treatment are put into 0.8% brine media and are cooled to 120 DEG C
Below；Ageing treatment: 500 DEG C will be heated in the stainless steel bars merging heat-treatment furnace after intermediate treatment, 2h be kept the temperature, with furnace
It is cooled to 400 DEG C, comes out of the stove and be air-cooled to room temperature；
(3) machine: be 40 × 405mm of φ to the size after heat treatment, material be 17-4PH stainless steel bars be machined to as
The throttle valve stem of 35 × 400mm of φ shown in FIG. 1,1 maximum gauge of valve rod are 35mm, and end 2 is taper, and cone angle is
30 degree, cone length 50mm；
(4) thermal spraying: thermal spraying is carried out with spray gun to the throttle valve stem tip position after processing with brass powder, by brass powder material
Material is transferred to spray gun and carries out thermal spraying to 2 surface location of end of the throttle valve stem after processing after being heated to 250 DEG C；Spray time
2 minutes, after spraying, throttle valve stem is quickly transferred in closed box in 1 minute and is slowly cooled to room temperature；
(5) it finishes: grinding machine on spraying and throttle valve stem end after cooling is refined；
(6) it detects a flaw: defect detecting test being carried out to throttle valve stem end 2 with defectoscope, is existed to avoid the defects of micro-crack.
The material and production technology of two: φ 30 × 400mm throttle valve stem of embodiment manufacture
(1) blanking: requiring according to product φ 30 × 400mm size, and selection material is 17-4PH stainless steel, φ 35 × 405mm stick
Material carries out blanking；
(2) it is heat-treated: will be that 17-4PH stainless steel bars carry out solution treatment+intermediate treatment having a size of 35 × 405mm of φ, material
The mode of+ageing treatment is heat-treated, and improves properties of product, solution treatment: stainless steel bars being put into heat-treatment furnace and are added
1040 DEG C of temperature keeps the temperature 4h；Intermediate treatment: the stainless steel bars of solution treatment are put into 5% brine media be cooled to 120 DEG C with
Under；Ageing treatment: will be heated to 500 DEG C in the stainless steel bars merging heat-treatment furnace after intermediate treatment, keep the temperature 2h, cold with furnace
To 400 DEG C, comes out of the stove and be air-cooled to room temperature；
(3) machine: be 35 × 405mm of φ to the size after heat treatment, material be 17-4PH stainless steel bars be machined to as
The throttle valve stem of 30 × 400mm of φ shown in FIG. 1,1 maximum gauge of valve rod are 30mm, and end 2 is taper, and cone angle is
30 degree, cone length 50mm；
(4) thermal spraying: thermal spraying is carried out with spray gun to the throttle valve stem tip position after processing with brass powder, by brass powder material
Material is transferred to spray gun and carries out thermal spraying to 2 surface location of end of the throttle valve stem after processing after being heated to 180 DEG C；Spray time
2.5 minutes, after spraying, throttle valve stem is quickly transferred in closed box in 1 minute and is slowly cooled to room temperature；
(5) it finishes: grinding machine on spraying and throttle valve stem end after cooling is refined；
(6) it detects a flaw: defect detecting test being carried out to throttle valve stem end 2 with defectoscope, is existed to avoid the defects of micro-crack.
The material and production technology of three: φ 60 × 450mm throttle valve stem of embodiment manufacture
(1) blanking: requiring according to product φ 60 × 450mm size, and selection material is 17-4PH stainless steel, φ 65 × 455mm stick
Material carries out blanking；
(2) it is heat-treated: will be that 17-4PH stainless steel bars carry out solution treatment+intermediate treatment having a size of 65 × 455mm of φ, material
The mode of+ageing treatment is heat-treated, and improves properties of product, solution treatment: stainless steel bars being put into heat-treatment furnace and are added
1040 DEG C of temperature keeps the temperature 6h；Intermediate treatment: the stainless steel bars of solution treatment are put into 10% brine media be cooled to 120 DEG C with
Under；Ageing treatment: will be heated to 500 DEG C in the stainless steel bars merging heat-treatment furnace after intermediate treatment, keep the temperature 2h, cold with furnace
To 400 DEG C, comes out of the stove and be air-cooled to room temperature；
(3) machine: be 65 × 455mm of φ to the size after heat treatment, material be 17-4PH stainless steel bars be machined to as
The throttle valve stem of 60 × 450mm of φ shown in FIG. 1,1 maximum gauge of valve rod are 60mm, and end 2 is taper, and cone angle is
30 degree, cone length 50mm；
(4) thermal spraying: thermal spraying is carried out with spray gun to the throttle valve stem tip position after processing with brass powder, by brass powder material
Material is transferred to spray gun and carries out thermal spraying to 2 surface location of end of the throttle valve stem after processing after being heated to 250 DEG C；Spray time
3 minutes, after spraying, throttle valve stem is quickly transferred in closed box in 1 minute and is slowly cooled to room temperature；
(5) it finishes: grinding machine on spraying and throttle valve stem end after cooling is refined；
(6) it detects a flaw: defect detecting test being carried out to throttle valve stem end 2 with defectoscope, is existed to avoid the defects of micro-crack.
Claims (1)
1. the material and manufacturing process of a kind of throttle valve stem, it is characterised in that: the stainless steel of throttle valve stem of the invention
It makes, technical process includes the following steps:
(1) blanking: requiring according to product size, by calculating, carries out blanking with stainless steel bars；
(2) it is heat-treated: the good stainless steel bars of blanking being subjected to solution treatment+intermediate treatment+ageing treatment mode and carry out hot place
Reason improves properties of product, solution treatment: stainless steel bars being put into and heat 1040 DEG C in heat-treatment furnace, keep the temperature 3-6h；Middle
Reason: the stainless steel bars of solution treatment are put into 0.8-10% brine media and are cooled to 120 DEG C or less；Ageing treatment: will be in
Between be heated to 500 DEG C in treated stainless steel bars merging heat-treatment furnace, heat preservation 2h comes out of the stove and is air-cooled to being furnace-cooled to 400 DEG C
Room temperature；
(3) it machines: by drawing, throttle valve stem being machined to the stainless steel bars after heat treatment；
(4) thermal spraying: carrying out thermal spraying with spray gun to the throttle valve stem tip position after processing,
Thermal spraying material: brass powder material, 180-250 DEG C of temperature；
Spray time 2-3 minutes, after spraying, throttle valve stem is quickly transferred to Slow cooling in closed box in 1 minute；
(5) it finishes: grinding machine on spraying and throttle valve stem end after cooling is refined；
(6) it detects a flaw: defect detecting test being carried out to throttle valve stem end with defectoscope, to avoid the presence of micro-crack defect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811049805.XA CN108942120A (en) | 2018-09-10 | 2018-09-10 | A kind of material and manufacturing process of throttle valve stem |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811049805.XA CN108942120A (en) | 2018-09-10 | 2018-09-10 | A kind of material and manufacturing process of throttle valve stem |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108942120A true CN108942120A (en) | 2018-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811049805.XA Pending CN108942120A (en) | 2018-09-10 | 2018-09-10 | A kind of material and manufacturing process of throttle valve stem |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081231A (en) * | 2019-04-28 | 2019-08-02 | 常州思源电力设备有限公司 | A kind of valve rod and its preparation process |
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| RU2214323C1 (en) * | 2002-04-02 | 2003-10-20 | Общество с ограниченной ответстенностью "Научно-производственное предприятие "Уралавиаспецтехнология" | Method for making spindle of titanium alloy for pipeline fitting |
| CN102767631A (en) * | 2011-05-05 | 2012-11-07 | 上海威含德石油机械设备有限公司 | Orifice-plate type adjustable throttle valve and manufacturing method thereof |
| CN105331786A (en) * | 2015-12-07 | 2016-02-17 | 哈尔滨工业大学 | Negative temperature gradient solid solution heat treatment method of PH17-4 precipitation-hardening stainless steel |
| CN106151553A (en) * | 2015-04-27 | 2016-11-23 | 天津市海来特防腐阀门厂 | A kind of Novel throttling valve |
| CN106989190A (en) * | 2016-01-21 | 2017-07-28 | 浙江加耐特阀杆有限公司 | A kind of processing technology of valve rod and the valve rod |
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2018
- 2018-09-10 CN CN201811049805.XA patent/CN108942120A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2214323C1 (en) * | 2002-04-02 | 2003-10-20 | Общество с ограниченной ответстенностью "Научно-производственное предприятие "Уралавиаспецтехнология" | Method for making spindle of titanium alloy for pipeline fitting |
| CN102767631A (en) * | 2011-05-05 | 2012-11-07 | 上海威含德石油机械设备有限公司 | Orifice-plate type adjustable throttle valve and manufacturing method thereof |
| CN106151553A (en) * | 2015-04-27 | 2016-11-23 | 天津市海来特防腐阀门厂 | A kind of Novel throttling valve |
| CN105331786A (en) * | 2015-12-07 | 2016-02-17 | 哈尔滨工业大学 | Negative temperature gradient solid solution heat treatment method of PH17-4 precipitation-hardening stainless steel |
| CN106989190A (en) * | 2016-01-21 | 2017-07-28 | 浙江加耐特阀杆有限公司 | A kind of processing technology of valve rod and the valve rod |
Non-Patent Citations (3)
| Title |
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| 李新德: "《液压系统故障诊断与维修技术手册（第二版）》", 31 January 2013, 中国电力出版社 * |
| 熊海斌: "针式节流阀的整体式阀杆加工工艺改进", 《石油机械》 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081231A (en) * | 2019-04-28 | 2019-08-02 | 常州思源电力设备有限公司 | A kind of valve rod and its preparation process |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181207 |
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| RJ01 | Rejection of invention patent application after publication |