CN105252168B - A kind of functional form Fe bases built-up welding powder - Google Patents
A kind of functional form Fe bases built-up welding powder Download PDFInfo
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- CN105252168B CN105252168B CN201410340092.8A CN201410340092A CN105252168B CN 105252168 B CN105252168 B CN 105252168B CN 201410340092 A CN201410340092 A CN 201410340092A CN 105252168 B CN105252168 B CN 105252168B
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Abstract
The present invention provides a kind of functional form Fe bases built-up welding powder, main component is Fe base alloy powders, wherein also contain cubic boron nitride powder and rare earth oxide, the content of cubic boron nitride is the 1~20% of Fe base alloy powder quality, and the content of rare earth oxide is the 0.5% of Fe base alloy powder quality.Compared with existing Fe based alloys built-up welding powder and Ni base WC alloy welding deposit powder, also with higher wearability while functional form Fe based alloy built-up welding powder of the invention is with compared with high impact-resistant toughness, the fragile part of engineering machinery is more broadly applicable to.
Description
Technical field
The invention belongs to technique for overlaying field, and in particular to a kind of functional form Fe based alloy powder for plasma surfacing
End.
Background technology
Plasma arc powder surfacing is a kind of material surface strengthening technology, and using plasma arc as heat source, alloy powder is filling
Metal, when built-up welding, melt workpiece surface with resurfacing welding material at the same time, wearing layer are formed, so as to reach the mesh on strengthening material surface
's.The most important feature of plasma surfacing is that the component of built-up welding powder is easy to regulate and control, and the mechanical property of wearing layer is mainly by heap
The component at welding powder end determines, so the component for reasonably regulating and controlling built-up welding powder is to obtain the key of multipurpose wearing layer.
Existing common built-up welding powder mainly has Fe base alloy powders and Ni bases WC (tungsten carbide) alloy powder.Fe based alloys
The main component of powder is Fe elements, adds the alloying elements such as C, Cr, B, Si.The main component of Ni base WC alloy powders is Ni members
Element, adds enhancing particle WC.
The wearing layer prepared using Fe base alloy powders has the characteristics that strong shock resistance, but the hardness of wearing layer compared with
Low, wear-resisting property is poor, is mainly used in intense impact working condition.The wearing layer prepared using Ni base WC alloy powders is had
The characteristics of hardness is high, wearability is strong, but toughness is poor, and also it is of high cost, it is mainly used in high wear working condition.
The content of the invention
The present inventor it was surprisingly found that cubic boron nitride (c-BN) is added in Fe base alloy powders,
Recycle the crystal grain of rare earth element refinement surfacing layer, suppress the dissolving of c-BN particles and the group of Carbide Phases in overlay cladding
Distribution poly-, regulation and control c-BN is in overlay cladding, thus obtained built-up welding powder have the function of more excellent, utilize the preparation of this powder
Wearing layer can have higher toughness and wearability at the same time, and cost is relatively low, is applicable to have at the same time strong
Impact and the bad working environments of highly abrasion-resistant.
Based on above-mentioned discovery, the first aspect of the present invention provides a kind of functional form Fe bases built-up welding powder, main component Fe
Base alloy powder, wherein also containing cubic boron nitride powder and rare earth oxide, the content of cubic boron nitride is Fe based alloy powder
1~20% (such as 1%, 5%, 10%, 15% or 20%) of last quality, the content of rare earth oxide is Fe base alloy powder matter
The 0.5% of amount.
In a preferred embodiment, in the functional form Fe base built-up welding powder described in the first aspect of the present invention cube
The content of boron nitride is the 1~18% of Fe base alloy powder quality, and the content of preferred cubic boron nitride is Fe based alloy powder
The 1~15% of last quality.
The second aspect of the present invention provides a kind of method of enhancing Fe based alloy wearing layer hardness, and this method is by a cube nitrogen
Change boron powder, rare earth element are added in Fe base alloy powders and are used as built-up welding powder, using the method for plasma surfacing, in base material
Surface prepares Fe based alloy wearing layers, the additive amount of its cubic boron nitride for Fe base alloy powder quality 1~20% (such as
1%th, 5%, 10%, 15% or 20%), the content of rare earth oxide is the 0.5% of Fe base alloy powder quality.
The third aspect of the present invention provides a kind of Fe based alloys wearing layer, and the wearing layer is as described in first aspect present invention
Fe base functional form built-up welding powder is prepared.Preferable preparation method is plasma surfacing.In the present invention, the Fe based alloys
The hardness of wearing layer is greater than or equal to 40HRC (such as 52HRC, 61HRC, 65HRC, 68HRC), preferably greater than or equal to 50HRC,
More preferably equal to or greater than 60HRC.
The fourth aspect of the present invention provides a kind of method for preparing Fe based alloy wearing layers, and this method is to be by the present invention
Functional form Fe base built-up welding powder described in first aspect is used as raw material after mixing, using the method for plasma surfacing, in base
Material surface prepares Fe based alloy wearing layers.
In a preferred embodiment, heretofore described rare earth oxide is CeO2。
In another preferred embodiment, the component of heretofore described Fe base alloy powders is：C0.2~
1.2% (such as 0.5%, 0.8% or 1%), Si0.5~1.2% (such as 0.6%, 0.8% or 1%), Mn0.05~0.2%
(such as 0.08%, 0.1%, 0.15% or 0.18%), B1~2.5% (such as 1.2%, 1.5%, 1.8% or 2%), Cr8~
12% (such as 9%, 10% or 11%), Ni0.5~1.2% (such as 0.6%, 0.8% or 1%), surplus Fe.
In a specific embodiment, the component of Fe base alloy powders of the present invention is：C0.5%, Si1%,
Mn0.1%, B2%, Cr10%, Ni1%, Fe85.4%.
In another preferred embodiment scheme, the electric current of plasma surfacing of the present invention is 100~140A (examples
Such as 110A, 120A or 130A), protection air-flow amount is 800~1200L/h (such as 900L/h, 1000L/h or 1200L/h).One
In a specific embodiment, the electric current of plasma surfacing of the present invention is 120A, and protection air-flow amount is 1000L/h.
Advantageous effect of the invention
Cubic boron nitride (c-BN) is added in Fe base alloy powders by the present invention, recycles rare earth element refinement overlay cladding
The crystal grain of tissue, suppress point of the dissolving of c-BN particles and the reunion of Carbide Phases, regulation and control c-BN in overlay cladding in overlay cladding
Cloth, and optimize the content of c-BN particles and rare earth element in the powder, the built-up welding powder with functionalization is obtained, utilizes this
The hardness of wearing layer prepared by powder is greater than or equal to 40HRC, and highest hardness can have higher anti-impact at the same time up to 68HRC
Toughness and wearability are hit, and cost is relatively low, is applicable to have intense impact and the complicated bad working environments of highly abrasion-resistant at the same time.
Compared with existing Fe based alloys built-up welding powder and Ni base WC alloy welding deposit powder, functional form Fe bases of the invention close
Also with higher wearability while golden built-up welding powder is with compared with high impact-resistant toughness, engineering machinery is more broadly applicable to
Fragile part.
Embodiment
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and should not be taken as limiting the scope of the invention.It is not specified in embodiment specific
Condition person, the condition suggested according to normal condition or manufacturer carry out.Production firm person is not specified in raw materials used or equipment, is
Can be with conventional products that are commercially available.
Hardness test standard in following embodiments is：GB/T230.1-2009 metal rockwell hardness testing methods.It is wear-resisting
Property test condition is：Abrasive particle be 20 mesh quartz sand, ballistic work 3J, experimental period 30min.The preparation process of wearing layer
For：Utilize plasma arc powder surfacing equipment, by powder weld deposition on the Q345 steel plates of 300mm × 300mm × 30mm, welding current
For 120A, protection air-flow amount is 1000L/h.
Embodiment 1：
Fe base alloy powder granularities：100~300 mesh；Main component is：C -0.5%, Si -1%, Mn -0.1%, B -
2%, Cr -10%, Ni -1%, Fe -85.4%.Using above-mentioned Fe base alloy powders prepare wearing layer hardness be about
30HRC.The c-BN and CeO of 100~300 mesh are added in above-mentioned Fe base alloy powders2, content is respectively 1% and 0.5%, by
The hardness of wearing layer prepared by this powder is about 40HRC.Wearability test result：Fe base alloy powders prepare the quality of wearing layer
Loss is about 0.61g；Add c-BN and CeO2The mass loss of wearing layer afterwards is about 0.52g, and surface flawless, without delamination
Phenomenon.
Embodiment 2：
Fe base alloy powder granularities：100~300 mesh；Main component is：C -0.5%, Si -1%, Mn -0.1%, B -
2%, Cr -10%, Ni -1%, Fe -85.4%.Using above-mentioned Fe base alloy powders prepare wearing layer hardness be about
30HRC.The c-BN and CeO of 100~300 mesh are added in above-mentioned Fe base alloy powders2, content is respectively:5% and 0.5%, by
The hardness of wearing layer prepared by this powder is about 52HRC.Wearability test result：Fe base alloy powders prepare the quality of wearing layer
Loss is about 0.61g；Add c-BN and CeO2The mass loss of wearing layer afterwards is about 0.44g, and surface flawless, without delamination
Phenomenon.
Embodiment 3：
Fe base alloy powder granularities：100~300 mesh；Main component is：C -0.5%, Si -1%, Mn -0.1%, B -
2%, Cr -10%, Ni -1%, Fe -85.4%.Using above-mentioned Fe base alloy powders prepare wearing layer hardness be about
30HRC.The c-BN and CeO of 100~300 mesh are added in above-mentioned Fe base alloy powders2, content is respectively:10% and 0.5%,
Thus the hardness of wearing layer prepared by powder is about 61HRC.Wearability test result：Fe base alloy powders prepare the matter of wearing layer
Amount loss is about 0.61g；Add c-BN and CeO2The mass loss of wearing layer is about 0.36g afterwards, and surface flawless, nothing are de-
Layer phenomenon.
Embodiment 4：
Fe base alloy powder granularities：100~300 mesh；Main component is：C -0.5%, Si -1%, Mn -0.1%, B -
2%, Cr -10%, Ni -1%, Fe -85.4%.Using above-mentioned Fe base alloy powders prepare wearing layer hardness be about
30HRC.The c-BN and CeO of 100~300 mesh are added in above-mentioned Fe base alloy powders2, content is respectively:15% and 0.5%,
Thus the hardness of wearing layer prepared by powder is about 65HRC.Wearability test result：Fe base alloy powders prepare the matter of wearing layer
Amount loss is about 0.61g；Add c-BN and CeO2The mass loss of wearing layer is about 0.25g afterwards, and surface flawless, nothing are de-
Layer phenomenon.
Embodiment 5：
Fe base alloy powder granularities：100~300 mesh；Main component is：C -0.5%, Si -1%, Mn -0.1%, B -
2%, Cr -10%, Ni -1%, Fe -85.4%.Using above-mentioned Fe base alloy powders prepare wearing layer hardness be about
30HRC.The c-BN and CeO of 100~300 mesh are added in above-mentioned Fe base alloy powders2, additive amount is respectively:20% He
0.5%, thus the hardness of wearing layer prepared by powder is about 68HRC.Wearability test result：Fe base alloy powders prepare wear-resisting
The mass loss of layer is about 0.61g；Add c-BN and CeO2The mass loss of wearing layer is about 0.45g afterwards, and there is tiny split on surface
Line, have a small amount of delamination.
Claims (11)
1. a kind of functional form Fe bases built-up welding powder, main component is Fe base alloy powders, wherein also containing cubic boron nitride powder
And rare earth oxide, the content of cubic boron nitride are the 1~20% of Fe base alloy powder quality, the content of rare earth oxide is Fe
The 0.5% of base alloy powder quality,
Wherein, the rare earth oxide is CeO2, the component of the Fe base alloy powders is：C 0.2~1.2%, Si 0.5
~1.2%, Mn 0.05~0.2%, B 1~2.5%, Cr 8~12%, Ni 0.5~1.2%, surplus Fe.
2. the functional form Fe base built-up welding powder of claim 1, wherein the component of the Fe base alloy powders is：C 0.5%, Si
1%th, Mn 0.1%, B 2%, Cr 10%, Ni 1%, Fe 85.4%.
3. a kind of method of enhancing Fe based alloy wearing layer hardness, this method is to add cubic boron nitride powder, rare earth oxide
Enter into Fe base alloy powders and be used as built-up welding powder, using the method for plasma surfacing, it is resistance to prepare Fe based alloys in substrate surface
Layer is ground, the additive amount of its cubic boron nitride is the 1~20% of Fe base alloy powder quality, and the additive amount of rare earth oxide is Fe
The 0.5% of base alloy powder quality,
Wherein, the rare earth oxide is CeO2, the component of the Fe base alloy powders is：C 0.2~1.2%, Si 0.5
~1.2%, Mn 0.05~0.2%, B 1~2.5%, Cr 8~12%, Ni 0.5~1.2%, surplus Fe.
4. the method for claim 3, wherein the component of the Fe base alloy powders is：C 0.5%, Si 1%, Mn 0.1%,
B 2%, Cr 10%, Ni 1%, Fe 85.4%.
5. the method for claim 3 or 4, wherein the electric current of the plasma surfacing is 100~140A, protection air-flow amount is
800~1200L/h.
6. a kind of Fe based alloys wearing layer, the wearing layer prepared as the Fe base functional form built-up welding powder described in claim 1 or 2 and
Into.
7. the Fe based alloy wearing layers of claim 6, wherein the method for preparing wearing layer is plasma surfacing.
8. the Fe based alloy wearing layers of claim 7, wherein the electric current of the plasma surfacing is 100~140A, protect gas
Flow is 800~1200L/h.
9. the Fe based alloy wearing layers of claim 6, wherein the hardness of the Fe based alloy wearing layers is greater than or equal to
40HRC。
10. a kind of method for preparing Fe based alloy wearing layers, this method is to be by the functional form Fe described in claim 1 or 2
Base built-up welding powder is used as raw material after mixing, and using the method for plasma surfacing, it is wear-resisting to prepare Fe based alloys in substrate surface
Layer.
11. the method for claim 10, wherein the electric current of the plasma surfacing is 100~140A, protection air-flow amount is 800
~1200L/h.
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| JPS61270354A (en) * | 1985-05-27 | 1986-11-29 | Kawasaki Steel Corp | High-toughness welding steel |
| CN101148008A (en) * | 2007-11-09 | 2008-03-26 | 攀钢集团攀枝花钢铁研究院 | Corrosion-resistant welding rod and its preparing method |
| CN102886620A (en) * | 2012-10-25 | 2013-01-23 | 银锐明 | Nitrogen and boron alloying high tenacity hardfacing flux-cored wire |
| CN103060655A (en) * | 2012-10-10 | 2013-04-24 | 北京工业大学 | Preparation method of alloy powder and coating layer for preparing iron-base cladding layer |
| CN103418941A (en) * | 2013-07-30 | 2013-12-04 | 北京工业大学 | Welding wire for repairing worn positions of wear-resistant components and manufacturing method thereof |
-
2014
- 2014-07-16 CN CN201410340092.8A patent/CN105252168B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61270354A (en) * | 1985-05-27 | 1986-11-29 | Kawasaki Steel Corp | High-toughness welding steel |
| CN101148008A (en) * | 2007-11-09 | 2008-03-26 | 攀钢集团攀枝花钢铁研究院 | Corrosion-resistant welding rod and its preparing method |
| CN103060655A (en) * | 2012-10-10 | 2013-04-24 | 北京工业大学 | Preparation method of alloy powder and coating layer for preparing iron-base cladding layer |
| CN102886620A (en) * | 2012-10-25 | 2013-01-23 | 银锐明 | Nitrogen and boron alloying high tenacity hardfacing flux-cored wire |
| CN103418941A (en) * | 2013-07-30 | 2013-12-04 | 北京工业大学 | Welding wire for repairing worn positions of wear-resistant components and manufacturing method thereof |
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