CN101342648A - Iron-base alloy powder for high-pressure valve sealing surface weld deposit - Google Patents
Iron-base alloy powder for high-pressure valve sealing surface weld deposit Download PDFInfo
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- CN101342648A CN101342648A CNA2008100541562A CN200810054156A CN101342648A CN 101342648 A CN101342648 A CN 101342648A CN A2008100541562 A CNA2008100541562 A CN A2008100541562A CN 200810054156 A CN200810054156 A CN 200810054156A CN 101342648 A CN101342648 A CN 101342648A
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Abstract
The invention discloses iron base alloy powder for overlaying welding of the sealing surface of a high pressure valve. The iron base alloy powder comprises the following components with the weight portions of 18-24 percent of Cr, 4-6 percent of Mo, 13 percent of Ni, 4-5 percent of Si, 1-2 percent of B, equal to or less than 0.15 percent of C, and Fe for the rest. The beneficial effects of the invention are (1) low cost, (2) good technological properties and (3) high hardness. The invention adopts the iron base alloy powder to replace the cobalt base alloy powder. The price of the iron base alloy powder is much lower than the price of the cobalt base alloy powder. The iron base alloy powder can replace Stellite No. 6 cobalt base alloy powder, and has the advantages of low cost and high properties. The welding technology of the iron base alloy powder is more advanced than the welding technology of the Stellite No. 6 cobalt base alloy powder. The Stellite No. 6 cobalt base alloy powder needs to preheat the overlaying welding base before overlaying welding, or the welding seam will split open. The overlaying welding base of the invention does not need to be preheated. The iron base alloy powder has good overlaying welding properties, has simple technologies, and is easy to be operated. After being welded and cooled to room temperature, the hardness HRC of the iron base alloy powder is 39. The hardness under 560 centigrade in a furnace is higher than the hardness under room temperature. The iron base alloy powder has sedimentation and hardening functions.
Description
Technical field
What the present invention relates to is metal alloy powders, particularly be the iron(-)base powder that high-pressure valve sealing surface weld deposit is used.
Background technology
At present in the prior art, to high-pressure valve sealing surface weld deposit commonly used be No. 6 Co-based alloy powders of Stellite, because high-pressure valve sealing surface itself requires the heat resistant and wear resistant performance, and Co-based alloy powder belongs to the heat resistant and wear resistant material, has heat resistant and wear resistant performance preferably as No. 6 Co-based alloy powders of internationally recognized Stellite.But China costs an arm and a leg because cobalt raw material lacks, and has limited its use, so industrial and mining enterprises extremely thirst for occurring a kind of of high quality and at a reasonable price, has the material substitution Co-based alloy powder of heat resistant and wear resistant, to satisfy the specification requirement to high-pressure valve sealing surface weld deposit.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned technology, provide a kind of and substitute Co-based alloy powder, the iron(-)base powder that its high-pressure valve sealing surface weld deposit with No. 6 Co-based alloy powder heat resistant and wear resistants of Stellite performance is used with iron(-)base powder.
The technical scheme that solves the problems of the technologies described above is: the iron(-)base powder that a kind of high-pressure valve sealing surface weld deposit is used, this iron(-)base powder be the % meter by weight, is made up of following composition:
Cr：18-24％；Mo：4-6％；Ni：13％；Si：4-5％；B：1-2％
C :≤0.15%; Fe: surplus.
The invention has the beneficial effects as follows:
(1) cost is low.The present invention substitutes Co-based alloy powder with iron(-)base powder, and price of the present invention can substitute No. 6 Co-based alloy powders of Stellite well below Co-based alloy powder, has low cost, high performance advantage.
(2) good manufacturability.Welding procedure of the present invention is better than No. 6 Co-based alloy powders of Stellite, need before the built-up welding of Stellite6 Co-based alloy powder the built-up welding substrate preheating is handled, otherwise weld seam can ftracture.Built-up welding matrix of the present invention need not carry out preliminary treatment, has good built-up welding performance, and technology is simple, and is easy to operate.
(3) hardness height.Welding the back air cooling with the present invention is 39 to the hardness HRC of room temperature, and hardness is higher than room temperature hardness under the insulation in 560 ℃ of stoves, and the present invention has the PH function.
The specific embodiment
Below embodiments of the invention are described in further detail.
Embodiment 1
The invention provides the iron(-)base powder that a kind of high-pressure valve sealing surface weld deposit is used, this iron(-)base powder is the % meter by weight, is made up of following composition:
Cr：18％；Mo：4％；Ni：13％；Si：4％；B：1％
C:0.08%; Fe: surplus.
Embodiment 2
The invention provides the iron(-)base powder that a kind of high-pressure valve sealing surface weld deposit is used, this iron(-)base powder is the % meter by weight, is made up of following composition:
Cr：21％；Mo：5％；Ni：13％；Si：4.5％；B：1.5％
C:0.1%; Fe: surplus.
Embodiment 3
The invention provides the iron(-)base powder that a kind of high-pressure valve sealing surface weld deposit is used, this iron(-)base powder is the % meter by weight, is made up of following composition:
Cr：24％；Mo：6％；Ni：13％；Si：5％；B：2％
C:0.15%; Fe: surplus.
Preparation technology of the present invention adopts atomization.
Metal alloy powders of the present invention, for austenite structure has high warm nature, wherein adding elements such as Cr, Mo, Si is that the solid solution deposition is strengthened, and improves matrix strength and hardness; The adding of boron has improved the solderability of alloy of the present invention, by adding the control of Cr, Ni, Mo, Si, B and C content, makes this alloy have suitable hardness and high temperature resistant anti scuffing abrasiveness.
Claims (1)
1. the iron(-)base powder that high-pressure valve sealing surface weld deposit is used is characterized in that, this iron(-)base powder is the % meter by weight, is made up of following composition:
Cr：18-24％；Mo：4-6％；Ni：13％；Si：4-5％；B：1-2％
C :≤0.15%; Fe: surplus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100541562A CN101342648A (en) | 2008-08-18 | 2008-08-18 | Iron-base alloy powder for high-pressure valve sealing surface weld deposit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100541562A CN101342648A (en) | 2008-08-18 | 2008-08-18 | Iron-base alloy powder for high-pressure valve sealing surface weld deposit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101342648A true CN101342648A (en) | 2009-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100541562A Pending CN101342648A (en) | 2008-08-18 | 2008-08-18 | Iron-base alloy powder for high-pressure valve sealing surface weld deposit |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101797643A (en) * | 2010-04-09 | 2010-08-11 | 苏州大学 | No-co ferrous alloy powder composition for sealing face of nuclear power valve |
| CN102672368A (en) * | 2012-05-25 | 2012-09-19 | 天津市北方涂层材料有限公司 | Novel wear-resisting nickel-base overlaying alloy powder |
| CN104550934A (en) * | 2014-12-25 | 2015-04-29 | 铜陵市经纬流体科技有限公司 | Iron-base powder metallurgy material for high pressure valve and preparation method thereof |
| CN107350662A (en) * | 2017-08-26 | 2017-11-17 | 安徽鼎恒再制造产业技术研究院有限公司 | Valve repair iron-base self-fluxing alloy powder and its welding procedure |
| CN108326428A (en) * | 2018-01-25 | 2018-07-27 | 河北五维航电科技股份有限公司 | A kind of preparation of nuclear grade valve resurfacing welding material and overlaying method |
| CN110819909A (en) * | 2019-11-21 | 2020-02-21 | 天津铸金科技开发股份有限公司 | High-temperature-resistant valve spray welding powder |
| CN112775586A (en) * | 2020-12-25 | 2021-05-11 | 四川省绵阳市华意达化工有限公司 | Method for preparing surfacing material from chromium-containing waste residues |
-
2008
- 2008-08-18 CN CNA2008100541562A patent/CN101342648A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101797643A (en) * | 2010-04-09 | 2010-08-11 | 苏州大学 | No-co ferrous alloy powder composition for sealing face of nuclear power valve |
| CN102672368A (en) * | 2012-05-25 | 2012-09-19 | 天津市北方涂层材料有限公司 | Novel wear-resisting nickel-base overlaying alloy powder |
| CN104550934A (en) * | 2014-12-25 | 2015-04-29 | 铜陵市经纬流体科技有限公司 | Iron-base powder metallurgy material for high pressure valve and preparation method thereof |
| CN107350662A (en) * | 2017-08-26 | 2017-11-17 | 安徽鼎恒再制造产业技术研究院有限公司 | Valve repair iron-base self-fluxing alloy powder and its welding procedure |
| CN108326428A (en) * | 2018-01-25 | 2018-07-27 | 河北五维航电科技股份有限公司 | A kind of preparation of nuclear grade valve resurfacing welding material and overlaying method |
| CN110819909A (en) * | 2019-11-21 | 2020-02-21 | 天津铸金科技开发股份有限公司 | High-temperature-resistant valve spray welding powder |
| CN112775586A (en) * | 2020-12-25 | 2021-05-11 | 四川省绵阳市华意达化工有限公司 | Method for preparing surfacing material from chromium-containing waste residues |
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Open date: 20090114 |