CN101829861B - Submerged arc hardfacing flux-cored wire with high crack resistance - Google Patents
Submerged arc hardfacing flux-cored wire with high crack resistance Download PDFInfo
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- CN101829861B CN101829861B CN2010101718158A CN201010171815A CN101829861B CN 101829861 B CN101829861 B CN 101829861B CN 2010101718158 A CN2010101718158 A CN 2010101718158A CN 201010171815 A CN201010171815 A CN 201010171815A CN 101829861 B CN101829861 B CN 101829861B
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Abstract
The invention discloses a submerged arc hardfacing flux-cored wire with high crack resistance, comprising a low-carbon steel cored solder wire and a powder flux core arranged in the cored solder wire. The submerged arc hardfacing flux-cored wire is mainly characterized in that the powder flux core comprises the following components in percentage by weight: 20-45 high-carbon ferrochrome, 3-10 chromium nitride, 5-10 ferrotitanium, 3-8 deoxidizing agent and 35-65 ferrous powder and the filling rate is in the range of 30-50 percent. A surfacing layer using the submerged arc hardfacing flux-cored wire has the characteristics of high crack and wear resistance and the like and favorable welding process performances.
Description
Technical field
The present invention relates to a kind of submerged-arc overlaying welding flux-cored wire, particularly a kind of submerged arc hardfacing flux-cored wire with high crack resistance belongs to the welding material technology.
Background technology
Flux-cored wire is alloying element to be wrapped in the sheetmetal flux-cored wire of processing through being drawn into different-diameter.
Flux-cored wire forms the alloy layer with property such as wear-resistant, corrosion-resistant and high temperature resistant after welding fusing.The submerged arc overlay welding of flux-cored wire, repair and compound manufacturing in occupy an important position, be widely used in improving the mechanical performance such as wear-resistant of mechanical engineering structure.
It is generally acknowledged; The intensity on reinforcing material surface and the effective way of improving anti-wear performance; Provide the case hardness and the toughness and tenacity of material, and its comparatively to it is desirable to institutional framework be the even particle of distribution high-melting-point, high rigidity and good stability on tough and tensile, the continuous matrix.For this reason, researching and developing a kind of hardfacing alloy tissue morphology is the high tenacity matrix, and the flux-cored wire of the hard point that all suits of type, size and distribution, just becomes people's expectation.
Summary of the invention
The present invention aims to provide a kind of high tenacity that has, and the submerged-arc overlaying welding flux-cored wire of high cracking resistance and high rotproofness is to improve the service life of mechanical engineering structure.
The present invention realizes that the technical though of its purpose is; In powder medicine core component, replace carbon by nitrogen, and adopt the method for strong nitrogen element titanium microalloying; In the toughness of improving hardfacing alloy and cracking resistance, improve the hardness and its anti-wear performance of enhancing of hardfacing alloy.Thereby realization the object of the invention.
Based on above-mentioned technical though, the present invention realizes that the technical scheme of its purpose is:
A kind of submerged arc hardfacing flux-cored wire with high crack resistance comprises mild steel cored solder wire and the powder medicine core that is located in the said cored solder wire, and its innovative point is:
The component of a, said powder medicine core and the weight percentage of each component are (%):
High carbon ferro-chrome 20～45;
Chromium nitride 3～10;
Ferrotianium 5～10;
Deoxidier 3～8;
Iron powder 35～65;
B, the filling rate of said powder medicine core in said cored solder wire are in 30～50% scopes.
The main effect of each component is in above-mentioned medicine core component:
High carbon ferro-chrome, transition alloy elements in hardfacing alloy.
Chromium nitride, transition nitrogen element in hardfacing alloy.
Ferrotianium prevents to produce nitrogen pore in hardfacing alloy, promote the formation of hard, wear-resistant phase simultaneously.
Deoxidier is got rid of the oxygen in the overlay cladding, increases the intensity and the hardness of overlay cladding alloy.
Iron powder replenishes alloying element to overlay cladding.
And the filling rate of said powder medicine core in cored solder wire, can be according to actual instructions for use and operating mode, adjustment between 30%～50%.
Describe and to understand by the above given technical scheme and the effect of each component of powder medicine core; The present invention is owing to adopt nitrogen replacement carbon and under the high-temperature fusion condition, make nitrogen and titanium, chromium and iron reaction generate microalloies such as TiN, CrN, FeN particle mutually, and said alloy phase particle even dispersion is distributed in the hardfacing alloy; Thereby in the toughness of improving hardfacing alloy and crack resistance; Improve the hardness of hardfacing alloy, strengthened anti-wear performance, realized the object of the invention.
In technique scheme, the present invention advocates that said mild steel cored solder wire is the H08A steelwork, or the H10 steelwork.But be not limited to this.Result of the test shows phosphorus content at the mild steel product below 0.2%, all can be used for preparing hollow welding wire of the present invention.
In technique scheme, the present invention advocates that also said deoxidier is a kind or 2 kinds in silicon and 2 kinds of metallic elements of manganese.Silicon and manganese all are the strong deoxidiers that is lower than aluminium, and wherein the deoxidizing capacity of silicon is higher than manganese.If adopt silicon, manganese combined deoxidation, then its deoxidation effect is desirable more.For this reason, the present invention recommends.Here should be noted that SiO
2The deslagging situation of-MnO product in hardfacing alloy.And the deoxidier that special opinion is used is ferrosilicon and ferromanganese.
After technique scheme is able to implement; Its result on trial shows: welding technological properties of the present invention is good; Anti-weld crack performance is high, and the overlay cladding average hardness is in HRC35～61 scopes, and anti-wear performance is 6～20 times of Q235 carbon steel; And have the strong and alloying uniformity coefficient advantages of higher of anti-pore ability, realized original intention of the present invention.
Description of drawings
Fig. 1 is preparation technology's flow chart of the present invention.
The specific embodiment
Below contrast accompanying drawing, the description through the specific embodiment is described further the present invention.
One of specific embodiment is shown in accompanying drawing 1.
A kind of submerged arc hardfacing flux-cored wire with high crack resistance comprises H08A mild steel cored solder wire and the powder medicine core that is located in the said cored solder wire, and the component of said powder medicine core and the weight percentage of each component are: high carbon ferro-chrome 25%, chromium nitride 6%; Ferrotianium 7%, deoxidier (Si iron and Mn iron) 5%, iron powder 57%, filling rate are 34%.The overlay cladding average hardness is HRC42.
Two of the specific embodiment is shown in accompanying drawing 1.
A kind of submerged arc hardfacing flux-cored wire with high crack resistance comprises low mild steel cored solder wire of H10 and the powder medicine core that is located in the said cored solder wire, and the component of said powder medicine core and the weight percentage of each component are: high carbon ferro-chrome 40%, chromium nitride 7%; Ferrotianium 9%, deoxidier (Si iron and Mn iron) 7%, iron powder 37%, filling rate are 48%.The overlay cladding average hardness is HRC60.
In the foregoing description 1,2, the component of said high carbon ferro-chrome and the weight percentage of each component thereof are that Cr 62.0～72.0%, C≤6%, Fe surplus; The component of chromium nitride and the weight percentage of each component thereof are Cr>=60%, N>=5.0%, Fe surplus; The component of ferrotianium and the weight percentage of each component thereof are Ti 25.0～35.0%, the Fe surplus; Said deoxidier is ferrosilicon and ferromanganese, and the Si content of ferrosilicon is 40.0～47.0%, the Fe surplus; The Mn content of ferromanganese is 75.0～85.0%, the Fe surplus.
Can be understood by above-mentioned two embodiment, effect of the present invention is very good.
Claims (3)
1. a submerged arc hardfacing flux-cored wire with high crack resistance comprises mild steel cored solder wire and the powder medicine core that is located in the said cored solder wire, it is characterized in that:
The component of a, said powder medicine core and the weight percentage of each component are (%):
High carbon ferro-chrome 20～45;
Chromium nitride 3～10;
Ferrotianium 5～10;
Deoxidier 3～8;
Iron powder 35～65;
B, the filling rate of said powder medicine core in said cored solder wire are in 30～50% scopes.
2. submerged arc hardfacing flux-cored wire with high crack resistance according to claim 1 is characterized in that, said mild steel cored solder wire is the H08A steelwork, or the H10 steelwork.
3. submerged arc hardfacing flux-cored wire with high crack resistance according to claim 1 is characterized in that, said deoxidier is a kind or 2 kinds in silicon and 2 kinds of metallic elements of manganese.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101718158A CN101829861B (en) | 2010-05-14 | 2010-05-14 | Submerged arc hardfacing flux-cored wire with high crack resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101718158A CN101829861B (en) | 2010-05-14 | 2010-05-14 | Submerged arc hardfacing flux-cored wire with high crack resistance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101829861A CN101829861A (en) | 2010-09-15 |
| CN101829861B true CN101829861B (en) | 2012-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101718158A Expired - Fee Related CN101829861B (en) | 2010-05-14 | 2010-05-14 | Submerged arc hardfacing flux-cored wire with high crack resistance |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101837523B (en) * | 2010-06-11 | 2013-12-11 | 河海大学常州校区 | Titanium reinforced wear-resistance submerged overlaying flux-cored wire |
| CN104625472B (en) * | 2014-12-19 | 2017-04-12 | 华中科技大学 | High-strength and high-tenacity flux-cored wire material for automatic welding based on FCB |
| CN105108278B (en) * | 2015-08-31 | 2017-09-29 | 鲁西化工集团股份有限公司 | A kind of method for improving welding by both sides welding efficiency |
| CN105081612B (en) * | 2015-09-22 | 2017-03-08 | 山东大学 | A kind of plasma arc surfacing alloy powder for hot-work die |
| CN114378473B (en) * | 2021-12-22 | 2023-05-23 | 江苏沃盾耐磨新材料有限公司 | High-temperature-resistant and wear-resistant welding wire and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB467034A (en) * | 1935-05-29 | 1937-06-10 | Haynes Stellite Co | Improved welding rod or electrode |
| CN1562552A (en) * | 2004-04-16 | 2005-01-12 | 华中科技大学 | Soldering wire material containing nitrogen alloyed alloy core in form of hard surface |
| CN101402161A (en) * | 2008-11-07 | 2009-04-08 | 山东大学 | Abrasive wear resistant weld deposit flux-cored wire |
-
2010
- 2010-05-14 CN CN2010101718158A patent/CN101829861B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB467034A (en) * | 1935-05-29 | 1937-06-10 | Haynes Stellite Co | Improved welding rod or electrode |
| CN1562552A (en) * | 2004-04-16 | 2005-01-12 | 华中科技大学 | Soldering wire material containing nitrogen alloyed alloy core in form of hard surface |
| CN101402161A (en) * | 2008-11-07 | 2009-04-08 | 山东大学 | Abrasive wear resistant weld deposit flux-cored wire |
Non-Patent Citations (2)
| Title |
|---|
| 李延娜.氮碳合金化自保护硬面药芯焊丝堆焊层的组织与性能.《机械工程材料》.2007,第31卷(第7期), * |
| 杨可 等.氮合金化堆焊硬面合金及其冶金行为研究.《华中科技大学博士论文》.2009, * |
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| CN101829861A (en) | 2010-09-15 |
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Granted publication date: 20120201 Termination date: 20140514 |