CN1804121A - Method for spray-welding valve plate valve seat sealing surface of viscous oil thermal production well mouth by utilizing nickel-based alloy - Google Patents
Method for spray-welding valve plate valve seat sealing surface of viscous oil thermal production well mouth by utilizing nickel-based alloy Download PDFInfo
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- CN1804121A CN1804121A CN 200610045686 CN200610045686A CN1804121A CN 1804121 A CN1804121 A CN 1804121A CN 200610045686 CN200610045686 CN 200610045686 CN 200610045686 A CN200610045686 A CN 200610045686A CN 1804121 A CN1804121 A CN 1804121A
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Abstract
The spray welding method with Ni-base alloy to the valve plate, valve base and sealing surface of thick-oil thermal production well belongs to surface strengthening and modification technique. At present, the common technique has well resistance to oil, water, vapor, high-temperature and corrosion, but needs complex process with low efficiency and high energy consumption. Thereby, this invention applies metal powder with Ni, C, Cr, Si-Fe and B by given ratio for spray welding, reduces cost, improves resistance to high temperature and corrosion, convenient to cut and process, and fit to wide application.
Description
Technical field:
The present invention relates to a kind of nickel-base alloy that utilizes to method for spray-welding valve plate valve seat sealing surface of viscous oil thermal production well mouth, belong to metal welding knot method class.
Background technology:
Sufacing is one of gordian technique in the material science, and surfacing is as the important composition part of Surface Engineering, be used to metal surface enhanced and surface Modification, make its matrix surface have wear-resisting, anti-corrosion, fire-resistant oxidation resistant and the heat insulation radioprotective of electrical isolation thereof and strengthen the ability of sealing, therefore, in machining, be widely used.Wherein, spraying coating process continue to use for many years always cobalt, chromium, tungstenalloy welding rod material and supporting special-purpose plasma arc welding machine and frock bead-welding technology thereof to workpiece built-up welding spraying after, workpiece surface can form a friction layer, this attrition surface possesses high temperature resistant, high pressure resistant, corrosion-resistant, anti-washing away and characteristics that surface hardness is big, characteristic based on surfacing, this technology is used among the well mouth of oil well of national defense industry and petroleum industry more, and its product processed can satisfy substantially such as the oil-field thick-oil steam for thermal recovery drives well head valve plate, valve seat needs in the well head set-up.But, because the welding rod bead-welding technology that cobalt, chromium, tungsten alloy material are made is subjected to the restriction on the technical matters own, exist operation numerous and diverse during construction, inefficiency, and high energy consumption defective; Particularly outstanding is that its cost is high, and incompatible production needs.
The spray welding technology of nickel-base alloy prescription provided by the invention, it is good from dissolubility, wettability and surfacing performance to be applied in valve plate, the valve seat it, and anti-corrosion, high temperature resistant, oxidation characteristics that the surfacing settled layer has, and be easy to gold and cut processing, cost is low, can satisfy valve plate, sealing surface of seat surface hardness needs fully, present method is not reported through looking into patent.
Summary of the invention:
The object of the invention, be in order to overcome above-mentioned shortcoming, and provide utilize nickel-base alloy to thick oil thermal production well mouth valve plate, sealing surface of seat method for spray-welding, the pair of friction components wear resisting property stabilizing mechanical intensity that this invention forms after with the spray coating of alloy powder workpiece is high and have high temperature resistant, high pressure, an anticorrosive sealing property, and cost is low, alternative cobalt, chromium, tungstenalloy welding rod bead-welding technology.
Technical scheme:
For achieving the above object, it is 180 order metal-powders that surfacing of the present invention has adopted granularity, its weight ratio is a nickel: 57～75%, carbon C:0.6～1.0, chromium Cr:14～17, silicon Si:3～5, iron Fe≤15, boron: 2.5～4.5 powdered alloy, above-mentioned element use the acetylene flame evenly to be sprayed on the workpiece surface of valve plate, valve seat from dissolubility spray coating of alloy powder torch after mixing, and get final product.
Described spray welding process method is the high temperature that at first utilizes the oxy-acetylene flame burning to produce, in advance through the surface valve plate of clean of derusting that deoils, valve seat is heated to 300～400 ℃ with the acetylene flame, then, make nozzle at the distance valve plate, 120～150 millimeters positions of valve seat workpiece surface, to pass through the even spray deposition of acetylene flame in workpiece surface from the dissolubility powdered alloy, form 4-6 millimeter thick layer, and then through flame melt to the surface occur reflective after, remove the fusion position gradually, and making institute's compatibility special alloy powder and the mutual deposition of workpiece, the phase mutual diffusion interpenetrates, form a middle weave construction densification at last, firm metallurgical binding layer.
The present invention compared with prior art has distinguishing feature.
Because the present invention uses the Co-based alloy powder surfacing to valve plate, on the sealing surface of seat, by being processed to form one deck physical strength height, high temperature resistant, anticorrosive, good seal performance, the well-head valve panel seat trim pair of friction components of long working life, thereby substituted in the existing technology and used cobalt, chromium, tungsten electrode bead-welding technology operation is numerous and diverse, efficient is low, the alloy welding deposit technology that production cost is higher, serial heavy crude heat extraction steam flood well head set-up manufacture level is stepped on a new stage, in addition, this technological operation is simple, be convenient to construction, scrap rate is low, can significantly reduce production costs, increase substantially economic benefit, according to statistics, steam flood well head configuration valve plate, 455 yuan/part of valve seat workpiece Central Plains cobalt-chromium-tungsten alloy iron chains weldering valve plate, 129.5 yuan/part of valve seat adopts Ni base alloy oxygen-acetylene repairing technology valve plate to have only 105 yuan/part, and valve seat is 20 yuan/part only, every cover well head can be economized on the use of funds 6433 yuan, cost-saved 310,000 yuan of a bite well.
Embodiment:
The present invention is provided by following examples, is described further below.
Embodiment 1:
Adopting model during surfacing of the present invention is that QH-φ 1.9 type oxy-acetylene flame self-fluxing alloyed powder surfacing torch instruments carry out surfacing; During construction, with its 180 purpose metal-powder, get nickel respectively by its weight ratio: 57～75%, carbon C:0.6～1.0, chromium Cr:14～17, silicon Si:3～5, iron Fe≤15, boron: 2.5～4.5 powdered alloy is packed in the watering can, utilizes oxy-acetylene flame incendiary high temperature under 300～400 ℃ of conditions workpiece surface to be carried out surfacing.
Embodiment 2:
The processing step of the invention process when heavy crude heat extraction steam well head valve plate, sealing surface of seat is: 1. blanking: the 45# steel is made 120 millimeters of Φ 95～Φ, and quality is 4.3 kilograms of blank shapes;
2. forge: be swaged into 30 * 92 * 190 millimeters blanks;
3. heat treatment quenching and tempering: HB210～240;
4. machining: with its surface planing;
5. adopt nickel base alloy powder to use the oxyacetylene welding torch to its surface spraying weld, surfacing thickness is the 4-6 millimeter;
6. use surface grinding machine, valve plate, the valve base surface of surfacing carried out break-in, make its thickness reduce to 26 millimeters by 30 millimeters;
7. carry out the minute surface milling with the meticulous grinding machine of MG7125;
8. cooperate other in addition parts assemble, should use lapping oil to other parts grinding before the assembling, be assembled into valve plate, valve seat again after qualified.
Claims (2)
1, utilize nickel-base alloy to method for spray-welding valve plate valve seat sealing surface of viscous oil thermal production well mouth, it is characterized in that: described method for spray-welding is that the employing granularity is 180 purpose metal-powders, its weight ratio is pressed its nickel: 57～75%, carbon C:0.6～1.0, chromium Cr:14～17, silicon Si:3～5, iron Fe≤15, boron: 2.5～4.5 powdered alloy, use the acetylene flame evenly to be sprayed on the workpiece surface of valve plate, valve seat from dissolubility spray coating of alloy powder torch after mixing.
2, the nickel-base alloy that utilizes according to claim 1 is to method for spray-welding valve plate valve seat sealing surface of viscous oil thermal production well mouth, it is characterized in that: the temperature of spray welding process at first utilizing the oxy-acetylene flame burning to produce, in advance through the surface valve plate of clean of derusting that deoils, valve seat is heated to 300～400 ℃ with the acetylene flame, then, make nozzle at the distance valve plate, 120～150 millimeters positions of valve seat workpiece surface, to pass through the even spray deposition of acetylene flame in workpiece surface from the dissolubility powdered alloy, form 4-6 millimeter thick layer, and then through flame melt to the surface occur reflective after, remove the fusion position gradually, and make institute's compatibility special alloy powder and the mutual deposition of workpiece, the phase mutual diffusion, interpenetrate, form a middle weave construction densification at last, firm metallurgical binding layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610045686 CN1804121A (en) | 2006-01-17 | 2006-01-17 | Method for spray-welding valve plate valve seat sealing surface of viscous oil thermal production well mouth by utilizing nickel-based alloy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610045686 CN1804121A (en) | 2006-01-17 | 2006-01-17 | Method for spray-welding valve plate valve seat sealing surface of viscous oil thermal production well mouth by utilizing nickel-based alloy |
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| CN1804121A true CN1804121A (en) | 2006-07-19 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101929554A (en) * | 2010-08-06 | 2010-12-29 | 上海高中压阀门股份有限公司 | Improved flat gate valve |
| CN101591482B (en) * | 2008-11-28 | 2011-03-16 | 中国电力科学研究院 | Ni-based coating with abrasion-resistance corrosion-resistance nanometer structure and preparation method |
| CN102321886A (en) * | 2011-09-14 | 2012-01-18 | 遵义市润丰源钢铁铸造有限公司 | High-abrasion resistance roller of spray welding and wire drawing machine |
| CN104451660A (en) * | 2014-11-14 | 2015-03-25 | 北京中纬研科新材料有限公司 | Method for repairing transmission gear of axial flow fan |
| CN106271208A (en) * | 2016-09-12 | 2017-01-04 | 武汉理工大学 | A kind of plasma surfacing nickel base self-fluxing hard-face overlaying welding flux-cored wire |
| CN108857266A (en) * | 2017-08-17 | 2018-11-23 | 上海飞球科技（集团）有限公司 | A kind of gate sealing surface processing technology and welding tooling |
| CN114029702A (en) * | 2021-10-24 | 2022-02-11 | 洪泽东俊机械有限公司 | Manufacturing process of tungsten spraying valve plate |
-
2006
- 2006-01-17 CN CN 200610045686 patent/CN1804121A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101591482B (en) * | 2008-11-28 | 2011-03-16 | 中国电力科学研究院 | Ni-based coating with abrasion-resistance corrosion-resistance nanometer structure and preparation method |
| CN101929554A (en) * | 2010-08-06 | 2010-12-29 | 上海高中压阀门股份有限公司 | Improved flat gate valve |
| CN101929554B (en) * | 2010-08-06 | 2012-11-28 | 上海高中压阀门股份有限公司 | Improved flat gate valve |
| CN102321886A (en) * | 2011-09-14 | 2012-01-18 | 遵义市润丰源钢铁铸造有限公司 | High-abrasion resistance roller of spray welding and wire drawing machine |
| CN104451660A (en) * | 2014-11-14 | 2015-03-25 | 北京中纬研科新材料有限公司 | Method for repairing transmission gear of axial flow fan |
| CN106271208A (en) * | 2016-09-12 | 2017-01-04 | 武汉理工大学 | A kind of plasma surfacing nickel base self-fluxing hard-face overlaying welding flux-cored wire |
| CN106271208B (en) * | 2016-09-12 | 2019-10-25 | 武汉理工大学 | A kind of plasma surfacing nickel base self-fluxing hard-face overlaying welding flux-cored wire |
| CN108857266A (en) * | 2017-08-17 | 2018-11-23 | 上海飞球科技（集团）有限公司 | A kind of gate sealing surface processing technology and welding tooling |
| CN114029702A (en) * | 2021-10-24 | 2022-02-11 | 洪泽东俊机械有限公司 | Manufacturing process of tungsten spraying valve plate |
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