CN101275227B - High-temperature-resistant iron-base alloy powder for metallic surface hardening by cladding - Google Patents
High-temperature-resistant iron-base alloy powder for metallic surface hardening by cladding Download PDFInfo
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- CN101275227B CN101275227B CN200810053165XA CN200810053165A CN101275227B CN 101275227 B CN101275227 B CN 101275227B CN 200810053165X A CN200810053165X A CN 200810053165XA CN 200810053165 A CN200810053165 A CN 200810053165A CN 101275227 B CN101275227 B CN 101275227B
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Abstract
The invention relates to high-temperature resistance iron based alloy powders used in a metal surface cladding strengthening technology. Constituent elements and the weight ratio of the high-temperature resistance iron based alloy powders are separately: the weight ratio of C is 1 to 2; the weight ratio of Si is 1 to 2; the weight ratio of Mo is 4.0 to 4.5; the weight ratio of Cr is 25 to 30; theweight ratio of Ni is 15 to 20; the weight ratio of Mn is 0.5 to 1; the rest is Fe. An excellent performance of the invention on high-temperature resistance aspect is powerfully verified via test data. And the invention has lower manufacturing cost and is the iron based alloy powders of component surface cladding strengthening which is suitable for working high temperature environment.
Description
Technical field
The invention belongs to field of powder metallurgy, especially a kind of high-temperature-resistant iron-base alloy powder that is used for metallic surface hardening by cladding.
Background technology
Used metal surface enhanced cladding alloy mainly contains welding rod solder flux type and powdered alloy type by form both at home and abroad at present; Can be divided into ferrous alloy, nickel-base alloy, cobalt base alloy, copper base alloy, matrix material etc. by material composition.The principal feature of iron(-)base powder is that the normal temperature wear resisting property is good, shock resistance, raw material sources are abundant, cost is low, but the subject matter of its existence is resistance to elevated temperatures and poor corrosion resistance etc.
By retrieval, two pieces of relevant patents have been found.One piece of patent relates to a kind of laser cladding special-purpose iron-base powdered alloy (patent No. is 02154195.7), and it is (%): C0.15～0.25 that the weight of its powdered alloy constitutes; Cr14～17; Ni2～5; Mo1～2; Nb0.25～0.5; Ta0.1～0.4; N0.2～0.4; Si1.1～1.4; B0.1～1.0; All the other are Fe.Another piece patent relates to a kind of production technique of iron-base alloy powder metallurgical products, and it is (%): Fe95.35 that the weight of its powdered alloy constitutes; Cu1.5; C0.5; Mn0.4; Mo0.5; Cr1.5; S0.15; Machine oil 0.1.Above-mentioned two pieces of patents high temperature resistant, corrosion resistance nature is very general.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art part, the high-temperature-resistant iron-base alloy powder of the piece surface cladding reinforcement that a kind of performance is good, cost is low and be suitable for working under the comparatively high temps environment is provided.
The technical scheme of technical solution problem of the present invention is:
A kind of high-temperature-resistant iron-base alloy powder that is used for metallic surface hardening by cladding, it constitutes element and weight percent is respectively:
C?1～2； Si?1～2； Mo?4.0～4.5；?Cr?25～30；
Ni 15～20; Mn 0.5～1; Surplus is Fe.
And the optimum weight proportioning of each element is:
C?1.7； Si?1.45； Mo?4.2； Cr?27；
Ni?17； Mn?0.7； Fe?47.95。
And this powdered alloy adopts the atomization preparation, and its powder particle hardness is 490-540HV, and cladding layer hardness is 38-42HRC.
Advantage of the present invention and positively effect are:
By testing data, effectively verified the premium properties of the present invention aspect high temperature resistant, and manufacturing cost is comparatively cheap, is the iron-based alloy powder material that a kind of piece surface cladding that is suitable for working under hot environment is strengthened.
Description of drawings
Fig. 1 is a powder morphology picture of the present invention;
Fig. 2 is an XRD analysis collection of illustrative plates of the present invention;
Fig. 3 is a plasma melting coating microhardness distribution curve of the present invention;
Fig. 4 is the microtexture picture of plasma melting coating of the present invention;
Fig. 5 is cladding layer hardness curve after the pyroprocessing of the present invention;
Fig. 6 is a high temperature oxidation resistance graphic representation of the present invention.
Embodiment
The invention will be further described below by specific embodiment, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.
A kind of high-temperature-resistant iron-base alloy powder that is used for metallic surface hardening by cladding, it constitutes element and weight percent is respectively:
C 1～2; Si 1～2; Mo 4.0～4.5; Cr 25～30; Ni 15～20; Mn 0.5～1; Surplus is Fe.
Most preferred embodiment of the present invention is (weight percent):
C?1.7；Si?1.45；Mo?4.2；Cr?27；Ni?17；Mn?0.7；Fe?47.95。
The present invention adopts atomization to prepare high-temperature-resistant iron-base alloy powder, and its powder particle hardness is 490-540HV.
Further verify advance of the present invention below by various performance test results.
Fig. 2 is the XRD analysis collection of illustrative plates of powdered alloy.Analyze as can be known, the thing in the powder is mutually mainly by γ (Fe, Cr, Ni) solid solution matrix and (Cr, Fe)
7C
3Form.
Fig. 3 has shown the microhardness graphic representation of the plasma melting coating of this powder along different layer depths, and the thickness of this cladding layer is 2.6mm.
Fig. 4 is the microtexture of plasma melting coating of the present invention, and its cladding layer presents tangible dentrite structure, and dendrite is more tiny, and white is dendritic matrix in the microtexture picture, distribute therebetween be eutectic structure.And XRD analysis result shows that the tissue of cladding layer is mainly by γ (Fe, Cr, Ni) solid solution matrix and (Cr, Fe)
7C
3Form.
Fig. 5 is treatment temp and cladding layer hardness profile.Its test method is: getting hardness is the powdered alloy cladding sample of 38HRC, sample is put into chamber type electric resistance furnace heat.Temperature is set at 400 ℃, 450 ℃, 500 ℃, 550 ℃, 600 ℃, 650 ℃, 700 ℃, 750 ℃, 800 ℃, 850 ℃ respectively, and insulation is taken out the sample air cooling to room temperature, measures cladding layer hardness, and gets its mean value.Can analyze from curve: compare with the cladding layer without pyroprocessing, when Heating temperature was lower than 750 ℃, its hardness remained unchanged substantially after the pyroprocessing, but after temperature was greater than 750 ℃, hardness value began to descend.
Fig. 6 is the high temperature oxidation resistance graphic representation.Its test method is: this alloy cladding layer sample of thickness 2mm, diameter 18mm is treated, put into chamber type electric resistance furnace after weighing, setting Heating temperature is 800 ℃, takes out air cooling behind every heating 10h, weighs, heated altogether 120 hours, and came the high temperature oxidation degree of exosyndrome material with gain in weight.As seen from Figure 6, through 800 ℃ of oxidation tests of 120 hours, material is significantly weightening finish not.
Claims (2)
1. high-temperature-resistant iron-base alloy powder that is used for metallic surface hardening by cladding is characterized in that: it constitutes element and weight percent is respectively:
C 1.7；Si?1.45；Mo?4.2；Cr 27；
Ni 17；Mn 0.7；?Fe?47.95。
2. the high-temperature-resistant iron-base alloy powder that is used for metallic surface hardening by cladding according to claim 1 is characterized in that: adopt the atomization preparation, and its powder particle hardness is 490-540HV.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810053165XA CN101275227B (en) | 2008-05-20 | 2008-05-20 | High-temperature-resistant iron-base alloy powder for metallic surface hardening by cladding |
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| CN200810053165XA CN101275227B (en) | 2008-05-20 | 2008-05-20 | High-temperature-resistant iron-base alloy powder for metallic surface hardening by cladding |
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| CN101275227A CN101275227A (en) | 2008-10-01 |
| CN101275227B true CN101275227B (en) | 2011-06-08 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111218682A (en) * | 2020-01-09 | 2020-06-02 | 浙江工业大学 | Corrosion-resistant and wear-resistant iron-based laser cladding powder and laser cladding method thereof |
| CN112626517A (en) * | 2020-12-15 | 2021-04-09 | 赣州乾屹铭金属材料有限公司 | Production process of high-performance stirring blade adopting plasma cladding |
| CN117506230B (en) * | 2024-01-05 | 2024-03-15 | 成都工业学院 | Welding rod core wire and wear-resistant surfacing welding electrode |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1443624A (en) * | 2002-03-01 | 2003-09-24 | 独立行政法人物质材料研究机构 | Welding material for improved welded seam strength |
| CN1681616A (en) * | 2002-09-09 | 2005-10-12 | 独立行政法人物质·材料研究机构 | Method of arc welding using welding material having low transformation temperature |
| CN101144160A (en) * | 2007-09-03 | 2008-03-19 | 德阳中铁科技有限责任公司 | Method for melting and coating anti-rust wear-resistant alloy on steel rail surface |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1443624A (en) * | 2002-03-01 | 2003-09-24 | 独立行政法人物质材料研究机构 | Welding material for improved welded seam strength |
| CN1681616A (en) * | 2002-09-09 | 2005-10-12 | 独立行政法人物质·材料研究机构 | Method of arc welding using welding material having low transformation temperature |
| CN101144160A (en) * | 2007-09-03 | 2008-03-19 | 德阳中铁科技有限责任公司 | Method for melting and coating anti-rust wear-resistant alloy on steel rail surface |
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