CN103334102A - Special cobalt-base metal ceramic alloy powder for guillotine laser cladding - Google Patents
Special cobalt-base metal ceramic alloy powder for guillotine laser cladding Download PDFInfo
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- CN103334102A CN103334102A CN2013102416089A CN201310241608A CN103334102A CN 103334102 A CN103334102 A CN 103334102A CN 2013102416089 A CN2013102416089 A CN 2013102416089A CN 201310241608 A CN201310241608 A CN 201310241608A CN 103334102 A CN103334102 A CN 103334102A
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Abstract
The invention discloses a special cobalt-base metal ceramic alloy powder for guillotine laser cladding, which comprises the following components in percentage by weight: 11-13% of titanium carbide, 0.1-0.4% of carbon, 4-6% of calcium fluoride, 1-3% of silicon nitride, 6-9% of iron, 5-7% of chromium, 2-4% of zirconium, 1-3% of vanadium, 2-4% of silicon, 0.8-1.2% of manganese and the balance of Co. The cobalt-base metal ceramic alloy powder is specially used for guillotine laser cladding, reduces bubbles, cracks and shrinkage void defects on the cladding layer, and enhances the hardness, strength and shock resistance of the guillotine.
Description
Technical field
The present invention relates to a kind of powdered alloy, refer to a kind of cobalt-based cermet powder that is exclusively used in the chopper laser melting coating especially.
Background technology
Laser has high brightness, high directivity, high monochromaticity, high coherency's characteristics, is just used by growing field now, and laser melting coating is exactly a kind of in the process for treating surface.That summarizes says, the principle of laser melting coating is utilized high energy laser beam irradiation metal material surface exactly, substrate surface is melted rapidly, liquid metal forms a small-scale molten bath, fill in new powdered material simultaneously, in this molten bath, metallic substance originally mixes mutually with the powder that is added, and forms the new liquid-metal layer of one deck.Treat after the laser beam process that liquid-metal layer cooling rapidly forms the solid-state cladding layer of one deck thus in the metallic surface.Chopper generally comprises kerve and cutter, and an end of cutter is hinged on the kerve, and the other end is provided with handle, can be used for hard objects such as cutting metal sheet material, and chopper is behind life-time service, and the blade of chopper is prone to defectives such as wearing and tearing, chipping.If a kind of metal alloy powders can be provided, utilize laser and metal alloy powders that chopper is carried out surface treatment, just can improve hardness and the shock resistance of chopper, prolong the work-ing life of chopper.
Summary of the invention
Technical problem to be solved by this invention is: a kind of cobalt-based cermet powder that is exclusively used in the chopper laser melting coating is provided, this cobalt-based cermet powder is exclusively used in the laser melting coating of chopper, reduce pore, crackle and the shrinkage cavity defect of cladding layer, improve hardness, intensity and the shock resistance of chopper.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of cobalt-based cermet powder that is exclusively used in the chopper laser melting coating, by weight percentage, comprise the 11-13% titanium carbide, 0.1-0.4% carbon, 4-6% Calcium Fluoride (Fluorspan), the 1-3% silicon nitride, 6-9% iron, 5-7% chromium, 2-4% zirconium, the 1-3% vanadium, 2-4% silicon, 0.8-1.2% manganese, surplus is cobalt.
Wherein, the cobalt-based cermet powder optimum ratio that is exclusively used in the chopper laser melting coating comprises 12% titanium carbide, 0.3% carbon, and 5% Calcium Fluoride (Fluorspan), 2% silicon nitride, 8% iron, 6% chromium, 3% zirconium, 2% vanadium, 3% silicon, 1% manganese, surplus is cobalt.
The effect of each composition is as follows in the cobalt-based cermet powder among the present invention:
Cobalt (Co): as cermet substrate, thorough fusion during cladding together forms laser molten pool with the chopper base material of molten state, for other elements or compound in the molten bath evenly the distribution after coagulation become cladding layer, to increase cladding layer hardness.
Titanium carbide (TiC) particle: in laser cladding process, do not melt, cobalt-based cermet powder evenly sprays from printhead to the chopper laser melting coating time, TiC is evenly distributed in the molten bath, is present in the cladding layer as strengthening particulate, has greatly strengthened the hardness of cladding layer.
Carbon (C): belong to non-metallic element, carbon content is more high, hardness is just more high, wear resisting property is just more good, yield-point and tensile strength raise, but its toughness, plasticity, impact and corrosion resistance can reduce along with the increase of carbon content, so when the selection of C content guarantees that chopper has certain wear resistance in this cermet powder, take into account toughness as much as possible, avoid the blade chipping.
Calcium Fluoride (Fluorspan) (CaF
2): as adding material, the internal stress when solidifying for the minimizing cladding layer defectives such as thermal crack, shrinkage cavity, shrinkage porosite occur after preventing from solidifying, and improves the compactness of metal inside tissue.
Silicon nitride (SiN
4): exist as second kind of ceramic particle except titanium carbide (TiC), in cladding process, do not melt, but the thermal absorptivity to laser is big, can accelerate heat dispersing, and as the mitigation of soft metallic element and ultrahigh hardness ceramic particle, strengthen creep resistance, oxidation-resistance has also improved erosion resistance.
Iron (Fe): identical with the material of chopper matrix, increase the affinity of liquid metal and matrix, the intensity of raising cladding layer metallurgical binding, make this cermet powder with the full and uniform fusion of chopper.
Chromium (Cr): have stronger solution strengthening ability, improve the intensity of cladding layer, can increase the quenching degree of steel and the deformability after the quenching, the hardening capacity of raising, and make cladding layer have good erosion resistance, wear resistance, hardness, elasticity, coercive force and anti-brute force.
Zirconium (Zr) high-melting-point has erosion resistance, during high temperature, can react with non-metallic element and many metallic elements, generates the solid solution compound, improves the erosion resistance of cladding layer.
Vanadium (V): have the refined crystalline strengthening effect, can improve the hardening capacity of resistance to tempering and material, also can form carbide with carbon.
Silicon (Si): in the self-fluxing nature powder, rise from slag making and provide protection, can preferentially form silicate with the oxygen element that enters the molten bath, be covered in weld pool surface, prevent liquid metal transition oxidation, improve the wetting ability of liquid metal.Ferrite there is bigger molten admittedly strengthening effect, silicon energy refine pearlite tissue, but the weldability of the too high steel of Si is unfavorable.
Manganese (Mn): the hardening capacity that improves steel strongly, all can play bigger solution strengthening effect to ferrite and austenite, make steel possess high intensity and hardness, when the too high meeting of Mn makes steel have tangible temper brittleness, Mn impels austenite to grow up, and makes steel to overheated responsive.
After having adopted technique scheme, effect of the present invention is: this cobalt-based cermet powder is specifically designed to the laser melting coating of chopper, can fully merge with the chopper base material, each composition is uniformly distributed in the cladding layer, reduce pore, crackle and the shrinkage cavity defect of cladding layer, adopt the ultrahigh hardness ceramic particle to improve the hardness of chopper, select some trace elements to improve intensity and the shock resistance of chopper in addition again, increase the service life, avoid chipping.
Embodiment
The present invention is described in further detail below by specific embodiment.
Embodiment 1
With 110g titanium carbide, 1g carbon, 40g Calcium Fluoride (Fluorspan), 10g silicon nitride, 60g iron, 50g chromium, the 20g zirconium, the 10g vanadium, 20g silicon, 8g manganese, the sufficient mechanically mixing of 671g cobalt obtains 100-200 purpose cobalt-based cermet powder.
Embodiment 2
With 130g titanium carbide, 4g carbon, 60g Calcium Fluoride (Fluorspan), 30g silicon nitride, 90g iron, 70g chromium, the 40g zirconium, the 30g vanadium, 40g silicon, 12g manganese, the sufficient mechanically mixing of 494g cobalt obtains 100-200 purpose cobalt-based cermet powder.
Embodiment 3
With 120g titanium carbide, 3g carbon, 50g Calcium Fluoride (Fluorspan), 20g silicon nitride, 80g iron, 60g chromium, the 20g zirconium, the 20g vanadium, 30g silicon, 10g manganese, the sufficient mechanically mixing of 587g cobalt obtains 100-200 purpose cobalt-based cermet powder.
The metal alloy powders that mixes among this embodiment 3 powder injection hole by laser head is evenly sprayed, powder feeding direction and the laser beams coaxial of cermet powder, the optical maser wavelength of laser are 1.06 μ m, and output rating is 4000W, travelling speed is 3m/min, and the single track width is 2mm.The chopper that obtains through laser melting coating carries out mechanical detection and obtains following data: (distance in the following table is that the lowest surface with cladding layer is base plane, and base plane is above for just, and base plane is following for bearing)
Any technician is equal to the technical scheme of replacing or changing according to technical scheme of the present invention and inventive concept and should be fallen within protection scope of the present invention within the technical scope that the present invention discloses.
Claims (2)
1. be exclusively used in the cobalt-based cermet powder of chopper laser melting coating, by weight percentage, comprise the 11-13% titanium carbide, 0.1-0.4% carbon, 4-6% Calcium Fluoride (Fluorspan), the 1-3% silicon nitride, 6-9% iron, 5-7% chromium, 2-4% zirconium, the 1-3% vanadium, 2-4% silicon, 0.8-1.2% manganese, surplus is cobalt.
2. the cobalt-based cermet powder that is exclusively used in the chopper laser melting coating as claimed in claim 1 is characterized in that: comprise 12% titanium carbide, and 0.3% carbon, 5% Calcium Fluoride (Fluorspan), 2% silicon nitride, 8% iron, 6% chromium, 3% zirconium, 2% vanadium, 3% silicon, 1% manganese, surplus is cobalt.
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| CN2013102416089A CN103334102A (en) | 2013-06-18 | 2013-06-18 | Special cobalt-base metal ceramic alloy powder for guillotine laser cladding |
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| CN2013102416089A CN103334102A (en) | 2013-06-18 | 2013-06-18 | Special cobalt-base metal ceramic alloy powder for guillotine laser cladding |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103602858A (en) * | 2013-11-20 | 2014-02-26 | 张翀昊 | Special cobalt base metal ceramic alloy powder for continuous fiber laser cladding |
| CN111332367A (en) * | 2018-12-18 | 2020-06-26 | 通用汽车环球科技运作有限责任公司 | Pressure-hardening welded steel alloy component |
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| CN101100746A (en) * | 2007-08-03 | 2008-01-09 | 中国人民解放军装甲兵工程学院 | Carburization-like overloading tooth component tooth surface laser cladding powder material and repairing method thereof |
| CN102650012A (en) * | 2012-05-05 | 2012-08-29 | 张家港市和昊激光科技有限公司 | Special cobalt-based metal ceramic alloy powder for optical fiber laser cladding |
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2013
- 2013-06-18 CN CN2013102416089A patent/CN103334102A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1150183A (en) * | 1997-07-30 | 1999-02-23 | Kubota Corp | Composite sintered alloy for molten nonferrous metal, and its production |
| CN1670226A (en) * | 2004-03-17 | 2005-09-21 | 浙江工业大学 | Laser intensifying method on metal surface of water pump parts |
| CN101054667A (en) * | 2007-05-17 | 2007-10-17 | 贵州光谷海泰激光技术有限公司 | Material for repairing high-hardness engine member abandonment die by laser and application thereof |
| CN101100746A (en) * | 2007-08-03 | 2008-01-09 | 中国人民解放军装甲兵工程学院 | Carburization-like overloading tooth component tooth surface laser cladding powder material and repairing method thereof |
| CN102650012A (en) * | 2012-05-05 | 2012-08-29 | 张家港市和昊激光科技有限公司 | Special cobalt-based metal ceramic alloy powder for optical fiber laser cladding |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103602858A (en) * | 2013-11-20 | 2014-02-26 | 张翀昊 | Special cobalt base metal ceramic alloy powder for continuous fiber laser cladding |
| CN103602858B (en) * | 2013-11-20 | 2015-11-18 | 张翀昊 | Be exclusively used in the cobalt-based cermet powder of continous way optical-fiber laser cladding |
| CN111332367A (en) * | 2018-12-18 | 2020-06-26 | 通用汽车环球科技运作有限责任公司 | Pressure-hardening welded steel alloy component |
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Application publication date: 20131002 |