CN102052475B - Process for manufacturing wear-resistant gate with anti-cracking grooves - Google Patents
Process for manufacturing wear-resistant gate with anti-cracking grooves Download PDFInfo
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- CN102052475B CN102052475B CN201010600956A CN201010600956A CN102052475B CN 102052475 B CN102052475 B CN 102052475B CN 201010600956 A CN201010600956 A CN 201010600956A CN 201010600956 A CN201010600956 A CN 201010600956A CN 102052475 B CN102052475 B CN 102052475B
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- gate
- turning
- flashboard
- surfacing
- welding
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Abstract
The invention relates to a process for manufacturing a wear-resistant gate with anti-cracking grooves, which comprises the processes of gate turning, surfacing, heat treatment, welding layer turning and grinding. The process is mainly that: a plurality of annular concentrically-circular anti-cracking grooves are manufactured on a gate plane after a welding layer is turned and finely machined; and the surfacing process adopts zigzag surfacing technology. The manufacturing process comprises the following steps of: gate turning, surfacing, heat treatment, welding layer turning, anti-cracking groove turning, and grinding. The gate manufactured by the process can disperse a plane stress in each anti-cracking groove, so that overall deformation is divided into locally recoverable small deformation to prevent the gate from deformation and surface cracks; and the gate has the advantages that the gate is light and convenient to open and close, a sealing effect is good and the like, and is particularly suitable for the gate of a telescopic flat gate valve.
Description
Technical field
The present invention relates to valve field, specifically about a kind of manufacturing process of plate valve flashboard.
Background technique
Flashboard is the crucial open-shut device of plate valve; In high pressure, abrasiveness medium operating mode; Flashboard distortion and wearing and tearing are the main causes that influence the Gate-valve sealing performance, in order to improve the flashboard wear-resisting property, generally are employed in flashboard plane surface welding cemented carbide; Its manufacturing process is: flashboard turning → built-up welding → heat treatment → layer turning → grinding makes the flashboard sealing surface have high wear resistance.But the general 8 font bead-welding technologies that adopt of the flashboard that existing technological method is made are to the local built-up welding of flashboard sealing surface, and the flashboard that whole plane is carried out after the built-up welding is easy to generate surface crack in the distortion of high pressure operating mode, increases open and close torque, reduces sealability.
Summary of the invention
The objective of the invention is the shortcoming that exists to existing technology, the manufacturing process of the wear-resisting flashboard of band stress relieving grooving little, not easy to crack of distortion after the whole built-up welding of a kind of flashboard is provided.
Technological scheme of the present invention comprises flashboard turning, built-up welding, heat treatment, layer turning, abrasive process; Mainly be after layer turning fine finishing, on the flashboard plane, to make some annular concentric circle stress relieving groovings; Bead-welding technology adopts " returning " font technique for overlaying, and its manufacturing process is: flashboard turning → built-up welding → heat treatment → layer turning → turning stress relieving grooving → grinding.
Advantage of the present invention is to adopt " returning " font technique for overlaying to the whole built-up welding of flashboard; And in the flashboard plane, make some annular concentrics and justify stress relieving groovings; Plane stress is dispersed in every stress relieving grooving; Be divided into the part to bulk deformation and can recover the elasticity small deformation, prevent flashboard distortion and surface crack, open and close light, good sealing effect.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
The manufacturing process of the wear-resisting flashboard of band stress relieving grooving of the present invention; Comprise flashboard turning, built-up welding, heat treatment, layer turning, abrasive process; After layer turning fine finishing, make some annular concentric circle stress relieving groovings again; Bead-welding technology adopts " returning " font technique for overlaying, and its manufacturing process is: flashboard turning → built-up welding → heat treatment → layer turning → turning stress relieving grooving → grinding.Adopt " returning " font bead-welding technology technology can make layer and annular concentric circle stress relieving grooving have equidirectional texture structure, improve anti crack performance.This annular concentric circle stress relieving grooving is distributed to the plane stress of concentrating in every stress relieving grooving 3; Divide the bulk deformation of flashboard 1 into local small deformation; The resiliently deformable that flashboard 1 is produced when high pressure; After pressure balance, can automatically reply, solve the yielding problem that cracks of big integral plane built-up welding.In the bead-welding technology process, adopt the electric holding furnace temperature control to handle, to guarantee the postwelding stress removing.Stress relieving grooving 3 outermost surfaces are apart between flashboard 1 sealing surface being 12～20mm apart from B, and the distance A between the adjacent stress relieving grooving 3 is 50～80mm.The groove width of stress relieving grooving 3 is 2～3mm, and groove depth is 1.6mm, and the groove depth of splitting groove 3 makes stress relieving grooving 3 not penetrate the male layer that welds less than layer thickness, guarantees the wear-resisting and antiseptic property of flashboard 1.
Claims (1)
1. manufacturing process with the wear-resisting flashboard of stress relieving grooving; Comprise flashboard turning, built-up welding, heat treatment, layer turning, abrasive process; It is characterized in that after layer turning fine finishing, on the flashboard plane, making some annular concentric circle stress relieving groovings; Bead-welding technology adopts " returning " font technique for overlaying, and its manufacturing process is: flashboard turning → built-up welding → heat treatment → layer turning → turning stress relieving grooving → grinding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010600956A CN102052475B (en) | 2010-12-13 | 2010-12-13 | Process for manufacturing wear-resistant gate with anti-cracking grooves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010600956A CN102052475B (en) | 2010-12-13 | 2010-12-13 | Process for manufacturing wear-resistant gate with anti-cracking grooves |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102052475A CN102052475A (en) | 2011-05-11 |
| CN102052475B true CN102052475B (en) | 2012-10-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010600956A Active CN102052475B (en) | 2010-12-13 | 2010-12-13 | Process for manufacturing wear-resistant gate with anti-cracking grooves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102052475B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105598644B (en) * | 2016-01-21 | 2017-09-19 | 永嘉县恒正阀门有限公司 | Wedge Gate Valves sealing surface processing technology and its automatic bead welding equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4077604A (en) * | 1976-11-01 | 1978-03-07 | Grove Valve And Regulator Company | Cylindrical gate valve body |
| CN1562549A (en) * | 2004-04-07 | 2005-01-12 | 林中 | Method for fabricating composite wear-resisting plate through pile up welding |
| CN1669725A (en) * | 2005-04-06 | 2005-09-21 | 三一重工股份有限公司 | Method for manufacturing high strength and highly wear-resisting flashboard |
| CN101086297A (en) * | 2007-06-29 | 2007-12-12 | 上海富地阀门有限公司 | Alloy material surface welding water seal shutter |
| CN101870027A (en) * | 2009-04-22 | 2010-10-27 | 中冶焊接科技有限公司 | Method for manufacturing high-chromium alloy overlaying composite abrasion resistant plate |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61137677A (en) * | 1984-12-07 | 1986-06-25 | Mitsubishi Heavy Ind Ltd | Automatic overlay continuous welding method of disc shaped hardware |
-
2010
- 2010-12-13 CN CN201010600956A patent/CN102052475B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4077604A (en) * | 1976-11-01 | 1978-03-07 | Grove Valve And Regulator Company | Cylindrical gate valve body |
| CN1562549A (en) * | 2004-04-07 | 2005-01-12 | 林中 | Method for fabricating composite wear-resisting plate through pile up welding |
| CN1669725A (en) * | 2005-04-06 | 2005-09-21 | 三一重工股份有限公司 | Method for manufacturing high strength and highly wear-resisting flashboard |
| CN101086297A (en) * | 2007-06-29 | 2007-12-12 | 上海富地阀门有限公司 | Alloy material surface welding water seal shutter |
| CN101870027A (en) * | 2009-04-22 | 2010-10-27 | 中冶焊接科技有限公司 | Method for manufacturing high-chromium alloy overlaying composite abrasion resistant plate |
Non-Patent Citations (1)
| Title |
|---|
| JP昭61-137677A 1986.06.25 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102052475A (en) | 2011-05-11 |
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Denomination of invention: Process for manufacturing wear-resistant gate with anti-cracking grooves Effective date of registration: 20180103 Granted publication date: 20121003 Pledgee: Zhejiang bank Wenzhou Limited by Share Ltd Yongjia branch Pledgor: Koflow Valve Co., Ltd. Registration number: 2017330000348 |