CN1432749A - Valve plate surface treating process - Google Patents
Valve plate surface treating process Download PDFInfo
- Publication number
- CN1432749A CN1432749A CN 02113909 CN02113909A CN1432749A CN 1432749 A CN1432749 A CN 1432749A CN 02113909 CN02113909 CN 02113909 CN 02113909 A CN02113909 A CN 02113909A CN 1432749 A CN1432749 A CN 1432749A
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- China
- Prior art keywords
- valve plate
- sandblast
- spraying
- spray
- process parameter
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- Coating By Spraying Or Casting (AREA)
Abstract
The valve plate surface treating process includes the preparation of base material, treatment of two sections of arcs and spraying treatment of two planes. The preparation of base material includes machining according to drawings and hardening and tempering of 42CrMo; the treatment of two sections of arcs includes blast spraying and one-step spray welding to solve the problems of making the arcs shock resistant and wear resistant; and the spraying treatment of two planes includes blast spraying and high speed flange spraying to make the two plane wear resistant. The valve plate thus produced is wear resistant and shock resistant and the technological process is simple and low in cost.
Description
Technical field:
The present invention relates to a kind of process of surface treatment, particularly relate to a kind of valve plate surface treating process.
Background technique:
In the concrete pump Scotch yoke of engineering machinery valve plate is housed, valve plate moves up and down in Scotch yoke, and frequency is about 30 times/minute, drives valve and promptly opens the transmission and concrete transmission passage, and closing valve is that closing passage stops delivering concrete.The bigger stone of particle is usually arranged between valve plate and valve seat, when driving valve, stone or by being squeezed away, or squeezed brokenly, so the suffered impact force of valve plate is very big.The valve plate that conventional production methods is produced is to carry out Quenching Treatment after adopting 42CrMo modified.The workpiece of producing with this production method is hard and crisp, and the main damage type of valve plate is fracture, requires high-quality, construction industry efficiently in today, and these parts have a strong impact on production, are badly in need of solving.
Summary of the invention:
The valve plate that technical problem to be solved by this invention provides a kind of production has valve plate surface treating process wear-resisting, impact resistance.
The valve plate surface treating process that the present invention adopts is:
One, the preparation of base material: processing by drawing, use the 42CrMo quenching with Subsequent tempering.
Two, treatment process:
(1), handle two sections circular arcs of valve plate, solves that two sections circular arcs are hit and wear-resisting problem 1, sandblast
Material and process parameter:
Material: corundum sand granularity: about 14 orders
Air pressure: 0.5～0.8Mpa sandblast distance: 150～200mm
Sandblast angle: 60～75 degree spray times: less than 30min2, one-process surfacing
1. equipment: spray welding gun.
2. material: spray welding powder.
3. process parameter: oxygen: 7kg/cm
21.0m
3/ h;
Acetylene: 1.2kg/cm
21.0m
3/ h
4. coating thickness: 0.8～1.2mm (2), handle valve plate two planes: the wear-resisting problem 1, sand-blast material and the process parameter that solve two planes:
Material: corundum sand granularity: about 14 orders
Air pressure: 0.5～0.8Mpa sandblast distance: 150～200mm
Sandblast angle: 60～75 degree spray times: less than 1. equipment of 30min2, high speed flange spraying: paint finishing is material 2.: the high-speed flame tailored flour is process parameter 3.:
Oxygen: 100M
2/ min third is rare: 74%
Nitrogen: 2M
2/ min powder feeding motor: 2.0rpm
Spray distance: 200mm
4. coating thickness: 0.1～0.2mm
Because the present invention has adopted above-mentioned technique processing method, two sections circular arcs of valve plate and panel are carried out the processing of sandblast coating, cover coat hardness can reach HRC55～65, matrix is the 42CrMo quality adjustment condition, the combination of surfacing coating is a metallurgy combination, and the adhesive strength of high speed flange spraying layer can reach 7～10kg/mm
2So the valve plate that adopts the inventive method to produce guaranteed wear-resisting, the impact resistance of workpiece, and this technological operation is simple, and is with low cost.
Embodiment:
One, the preparation of base material: processing by drawing, use the 42CrMo quenching with Subsequent tempering.
Two, treatment process, handle the two sections circular arcs and the panel of valve plate respectively:
(1), handle two sections circular arcs of valve plate, solves that two sections circular arcs are hit and wear-resisting problem
1, sandblast
Material and process parameter:
Material: corundum sand granularity: about 14 orders
Air pressure: 0.5～0.8Mpa sandblast distance: 150～200mm
Sandblast angle: 60～75 degree spray times: less than 30min2, one-process surfacing
1. equipment: the h/4 spray welding gun that Shanghai Welding and Cutting Tool Factory produces.
2. material: the Ni60 spray welding powder that Shanghai Si Taili produces.
3. process parameter: oxygen: 7kg/cm
21.0m
3/ h;
Acetylene: 1.2kg/cm
21.0m
3/ h
4. coating thickness: 0.8～1.2mm (2), processing valve plate two planes solve the wear-resisting problem on two planes
1, sandblast
Material and process parameter:
Material: corundum sand granularity: about 14 orders
Air pressure: 0.5～0.8Mpa sandblast distance: 150～200mm
Sandblast angle: 60～75 degree spray times: less than 30min
2, high speed flange spraying
1. equipment: U.S. import JETKOTE paint finishing
2. material: WC-Co12% high-speed flame tailored flour
3. process parameter:
Oxygen: 100M
2/ min third is rare: 74%
Nitrogen: 2M
2/ min powder feeding motor: 2.0rpm
Spray distance: 200mm
4. coating thickness: 0.1～0.2mm
Surface treated valve plate cover coat hardness can reach HRC55～65, and matrix is the 42CrMo quality adjustment condition, and the combination of surfacing coating is a metallurgy combination, and the adhesive strength of high speed flange spraying layer can reach 7～10kg/mm
2, the valve plate that adopts the inventive method to produce guaranteed wear-resisting, the impact resistance of workpiece, and this technological operation is simple, and is with low cost.
Claims (2)
- A kind of valve plate surface treating process comprises the preparation of base material and to the spraying treatmen on two sections circular arcs of valve plate, valve plate two planes, it is characterized in that:One, the preparation of base material: processing by drawing, use the 42CrMo quenching with Subsequent tempering.
- Two, treatment process:(1), handle two sections circular arcs of valve plate:1, sandblastMaterial and process parameter:Material: corundum sand granularity: about 14 ordersAir pressure: 0.5～0.8Mpa sandblast distance: 150～200mmSandblast angle: 60～75 degree spray times: less than 30min2, one-process surfacing1. equipment: spray welding gun.2. material: spray welding powder.3. process parameter: oxygen: 7kg/cm 21.0m 3/ h;Acetylene: 1.2kg/cm 21.0m 3/ h4. coating thickness: 0.8～1.2mm(2), handle valve plate two planes:1, sandblastMaterial and process parameter:Material: corundum sand granularity: about 14 ordersAir pressure: 0.5～0.8Mpa sandblast distance: 150～200mmSandblast angle: 60～75 degree spray times: less than 30min2, high speed flange spraying1. equipment: paint finishing2. material: high-speed flame tailored flour3. process parameter:Oxygen: 100M 2/ min third is rare: 74%Nitrogen: 2M 2/ min powder feeding motor: 2.0rpmSpray distance: 200mm4. coating thickness: 0.1～0.2mm
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02113909 CN1191439C (en) | 2002-01-11 | 2002-01-11 | Valve plate surface treating process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02113909 CN1191439C (en) | 2002-01-11 | 2002-01-11 | Valve plate surface treating process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1432749A true CN1432749A (en) | 2003-07-30 |
| CN1191439C CN1191439C (en) | 2005-03-02 |
Family
ID=27628436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02113909 Expired - Fee Related CN1191439C (en) | 2002-01-11 | 2002-01-11 | Valve plate surface treating process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1191439C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101786193A (en) * | 2010-03-22 | 2010-07-28 | 天津市富赛克阀门有限公司 | Method for spray-welding anisotropic material on cast iron valve plate |
| CN108312070A (en) * | 2018-02-06 | 2018-07-24 | 郑州三超除锈技术有限公司 | The rust-proofing method of derusting by sandblasting |
| CN111230748A (en) * | 2019-12-30 | 2020-06-05 | 浙江浙能中煤舟山煤电有限责任公司 | Method for solving problem of jam of high-medium pressure air regulating valve of steam turbine |
-
2002
- 2002-01-11 CN CN 02113909 patent/CN1191439C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101786193A (en) * | 2010-03-22 | 2010-07-28 | 天津市富赛克阀门有限公司 | Method for spray-welding anisotropic material on cast iron valve plate |
| CN108312070A (en) * | 2018-02-06 | 2018-07-24 | 郑州三超除锈技术有限公司 | The rust-proofing method of derusting by sandblasting |
| CN111230748A (en) * | 2019-12-30 | 2020-06-05 | 浙江浙能中煤舟山煤电有限责任公司 | Method for solving problem of jam of high-medium pressure air regulating valve of steam turbine |
| CN111230748B (en) * | 2019-12-30 | 2023-08-08 | 浙江浙能中煤舟山煤电有限责任公司 | Method for solving problem of jamming of high-medium pressure regulating air valve of steam turbine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1191439C (en) | 2005-03-02 |
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| 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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050302 Termination date: 20140111 |