CN101619433B - Powered core coil for spraying FeCrMoCBSi amorphous alloy coating by electric arc - Google Patents
Powered core coil for spraying FeCrMoCBSi amorphous alloy coating by electric arc Download PDFInfo
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- CN101619433B CN101619433B CN2009100877120A CN200910087712A CN101619433B CN 101619433 B CN101619433 B CN 101619433B CN 2009100877120 A CN2009100877120 A CN 2009100877120A CN 200910087712 A CN200910087712 A CN 200910087712A CN 101619433 B CN101619433 B CN 101619433B
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Abstract
The invention belongs to the field of hot spray in material processing engineering and aims at providing a powered core coil for spraying FeCrMoCBSi amorphous alloy coating by electric arc. In the powered core coil, a stainless steel band is coated on a powered core; the diameter of the coil is 2.0mm, and the powered core occupies 28-42 percent of the coil by weight percent. The powered core comprises the components by weight percent: 40-70 percent of CrB, 4-20 percent of silicoferrite, 1-6 percent of chromium powder, 10-20 percent of ferromolybdenum, 1-5 percent of high carbon ferro-chrome, 5-15 percent of chromium carbide and 0-5 percent of misch metal. The powered core coil has higher noncrystalline forming ability; the coating prepared by an electric arc spraying technology has compact organization structure and good thermal stability, the amorphous phase content is larger than 70 percent, and the microhardness HV0.1 is larger than 1260.
Description
Technical field
The present invention relates to a kind of electric arc spraying FeCrMoCBSi is the amorphous alloy coating powder core wire, belongs to the field of thermal spray in the Materials Processing Engineering.
Background technology
Adopt arc spraying technology to industrial circle frayed, to be subjected to etching apparatus to carry out big area protection spraying be a kind of economy, effective process for protecting, the investigator provides multiple spraying material at present, but more or less have some defectives aspect wearing and tearing and the corrosion prevention, the exploitation of novel spraying silk material is imperative.
Non-crystaline amorphous metal does not have crystalline structure, compares advantage such as have the mechanical property excellence, wear-resistant, corrosion-resistant with the polycrystalline alloy that its identical element is formed.Wherein, characteristics such as the Fe base noncrystal alloy has that the raw material relative cost is lower, good mechanical property and thermal stability are good have become an important branch of amorphous alloys development.Non-crystaline amorphous metal relies on its unique and excellent performance to become the alloy material that has development potentiality, but, because the restriction of preparation condition, non-crystaline amorphous metal is also used on a large scale in the engineering field, and adopting advanced spraying technology to prepare amorphous alloy coating is to push non-crystaline amorphous metal to effective means that engineering is used.
In recent years, the research work for preparing amorphous alloy coating at hot-spraying techniques has both at home and abroad obtained certain achievement, wherein arc spraying technology have equipment simple, easy to operate, can carry out advantages such as big area spraying at the construction field (site), particularly adopt the powder core wire arc spraying technology original position to synthesize amorphous alloy coating, become current research focus.But, because it is shorter that the time is carried out in the work of this respect, it is deep not enough to utilize powder core wire and arc spraying technology to prepare the research of amorphous alloy coating, the prescription of existing powder core wire, contain NiB system and CrB is the amorphous alloy coating powder core wire as electric arc spraying, its amorphous formation ability is limited.Being amorphous alloy coating based on the electric arc of amorphous formation ability theoretical investigation spray FeCrMoCBSi is significant with the exploitation of powder core wire.
Summary of the invention
The object of the present invention is to provide a kind of electric arc spraying FeCrMoCBSi is the amorphous alloy coating powder core wire, this powder core wire prescription has higher amorphous formation ability, utilize this powder core wire can prepare the weave construction densification, FeCrMoCBSi that thermal stability is good is an amorphous alloy coating, coating amorphous content height, hardness height, abrasion resistance properties are good, can effectively protect frayed in the industrial circle, be subjected to the corrosive metal parts, prolong its work-ing life.
Electric arc spraying FeCrMoCBSi provided by the present invention is that amorphous alloy coating adopts stainless steel crust parcel powder core with powder core wire; The diameter of described powder core wire is 2.0mm; The mass percent that described powder core accounts for powder core wire is 28-42%; Each component and the quality percentage composition thereof of described powder core are: CrB:40-70%, ferrosilicon: 4-20%, chromium powder: 1-6%, molybdenum-iron: 10-20%, high carbon ferro-chrome: 1-5%, chromium carbide: 5-15%, mishmetal 0-5%.
Preparation method of the present invention adopts existing powder core wire technology of preparing, may further comprise the steps:
1, be that the Stainless Steel Band of thick 0.3mm * wide 10mm rolls into the U type with specification, add described powder core powder in U type groove, filling ratio is 28-42Wt%;
2, the capable groove of U is healed up, by road drawing, tube reducing, obtain the finished product that diameter is 2.0mm at last by wortle.
The present invention has beneficial effect:
Adopt the existing arc spraying technology can be, be prepared into the weave construction densification, FeCrMoCBSi that thermal stability is good is an amorphous alloy coating, its amorphous content＞70%, microhardness HV powder core wire provided by the present invention
0.1Relative wear resistance under＞1260,500 ℃ of conditions is 5.3 times of GCr15 bearing steel ball.
Description of drawings
The FeCrMoCBSi of Fig. 1, embodiment 1 preparation is the XRD figure spectrum of amorphous alloy coating.
The FeCrMoCBSi of Fig. 2, embodiment 1 preparation is the XRD figure spectrum fitted figure of amorphous alloy coating.
The FeCrMoCBSi of Fig. 3, embodiment 2 preparations is the differential thermal analysis curve of amorphous alloy coating.
The FeCrMoCBSi of Fig. 4, embodiment 3 preparations is the cross section microscopic appearance of amorphous alloy coating.
The FeCrMoCBSi of Fig. 5, embodiment 4 preparations is the cross section microhardness distribution figure of amorphous alloy coating.
The FeCrMoCBSi of Fig. 6, embodiment 5 preparations is the abrasive wear test curve of amorphous alloy coating under 500 ℃ of conditions.
Embodiment
Embodiment 1
Take CrB powder 450 grams, silicon iron powder 200 grams, chromium powder 50 grams, molybdenum-iron 200, high carbon ferro-chrome powder 20 grams, chromium carbide powder 80 grams.The various powder of get are put into mixed powder machine to be mixed 10 minutes.Selecting specification for use is the 304L stainless steel belt of thick 0.3mm * wide 10mm, earlier it is rolled into the U type, then mixed powder is added in the 304L stainless steel belt groove of U type, and filling ratio is 28%.U type groove is healed up, again through wortle gradually tube reducing make its diameter reach 2.0mm.Adopt arc spraying technology on the Q235 matrix, to prepare coating, spraying current 180-200A, spray voltage 30V, spraying air pressure 0.5MP, spray distance 150mm.Compose (Fig. 1) as seen from the XRD figure of coating, there is tangible amorphous diffraction bag in 30 °～60 ° zones.Compose fitted figure (Fig. 2) as can be known from the XRD figure of coating, the amorphous content of coating is 73.2%.Microhardness of coating and relative abrasive wear resistance performance see Table 1.
Take CrB powder 500 grams, silicon iron powder 150 grams, chromium powder 40 grams, molybdenum-iron 180, high carbon ferro-chrome powder 10 grams, chromium carbide powder 110 grams, mishmetal powder 10 grams.The various powder of get are put into mixed powder machine to be mixed 10 minutes.Selecting specification for use is the 304L stainless steel belt of thick 0.3mm * wide 10mm, earlier it is rolled into the U type, then mixed powder is added in the 304L stainless steel belt groove of U type, and filling ratio is 34%.U type groove is healed up, again through wortle gradually tube reducing make its diameter reach 2.0mm.Adopt arc spraying technology on the Q235 matrix, to prepare coating, spraying current 180-200A, spray voltage 32V, spraying air pressure 0.6MP, spray distance 200mm.The differential thermal analysis curve of coating (Fig. 3) shows that the crystallization starting temperature of amorphous alloy coating is 853K.Microhardness of coating and relative abrasive wear resistance performance see Table 1.
Embodiment 3
Take CrB powder 550 grams, silicon iron powder 120 grams, chromium powder 30 grams, molybdenum-iron 160, high carbon ferro-chrome powder 15 grams, chromium carbide powder 125 grams.The various powder of get are put into mixed powder machine to be mixed 10 minutes.Selecting specification for use is the 304L stainless steel belt of thick 0.3mm * wide 10mm, earlier it is rolled into the U type, then mixed powder is added in the 304L stainless steel belt groove of U type, and filling ratio is 38%.U type groove is healed up, again through wortle gradually tube reducing make its diameter reach 2.0mm.Adopt arc spraying technology on the Q235 matrix, to prepare coating, spraying current 180-200A, spray voltage 30V, spraying air pressure 0.55MP, spray distance 150mm.By the cross section microscopic appearance (Fig. 4) of coating as seen, the section structure even compact of coating.Microhardness of coating and relative abrasive wear resistance performance see Table 1.
Take CrB powder 600 grams, silicon iron powder 80 grams, chromium powder 20 grams, molybdenum-iron 140, high carbon ferro-chrome powder 25 grams, chromium carbide powder 135 grams.The various powder of get are put into mixed powder machine to be mixed 10 minutes.Selecting specification for use is the 304L stainless steel belt of thick 0.3mm * wide 10mm, earlier it is rolled into the U type, then mixed powder is added in the 304L stainless steel belt groove of U type, and filling ratio is 40%.U type groove is healed up, again through wortle gradually tube reducing make its diameter reach 2.0mm.Adopt arc spraying technology on the Q235 matrix, to prepare coating, spraying current 180-200A, spray voltage 30V, spraying air pressure 0.65MP, spray distance 200mm.By the cross section microhardness distribution (Fig. 5) of coating as can be known, coating in the microhardness at distance bonding surface different distance place all greater than 1260HV
0.1Microhardness of coating and relative abrasive wear resistance performance see Table 1.
Embodiment 5
Take CrB powder 650 grams, silicon iron powder 40 grams, chromium powder 30 grams, molybdenum-iron 120, high carbon ferro-chrome powder 10 grams, chromium carbide powder 150 grams.The various powder of get are put into mixed powder machine to be mixed 10 minutes.Selecting specification for use is the 304L stainless steel belt of thick 0.3mm * wide 10mm, earlier it is rolled into the U type, then mixed powder is added in the 304L stainless steel belt groove of U type, and filling ratio is 41%.U type groove is healed up, again through wortle gradually tube reducing make its diameter reach 2.0mm.Adopt arc spraying technology on the Q235 matrix, to prepare coating, spraying current 180-200A, spray voltage 32V, spraying air pressure 0.60MP, spray distance 150mm.By the abrasive wear test curve (Fig. 6) of coating under 500 ℃ of conditions as can be known, coating has been compared excellent abrasive with bearing steel GCr15.Microhardness of coating and relative abrasive wear resistance performance see Table 1.
Microhardness that table 1 is beaten all adopts HXD-1000 type microhardness tester, and load is 100g, and loading time 15s gets at 10 to sprayed coating and beats microhardness, draws the average microhardness value of this coating at last.
The abrasive wear experiment is carried out on HAWM-1 type high temperature abrasive particle wear-out testing apparatus.Sample adopts the spherical sample be covered with coating, and sample top applied load, collision, friction, extruding and the cutter that when utilizing spherical sample to roll abrasive particle is rolled generation are cut and be used for the high temperature resistant abrasive wear behavior of testing coating.The GCr15 bearing steel ball that selection is bought from the market is sample as a comparison, before the wear test, is left intact except that cleaning is weighed and directly uses.Experiment parameter is as follows: rotating speed is 75r/min; Load is 30N; Abrasive particle is 16 a purposes palm fibre corundum, and each consumption is 300 grams; Probe temperature is 500 ℃; Each test 2 hours also more renews abrasive particle, surveys altogether 10 hours.The wear resisting property of material is weighed with the unit surface abrasion loss, is the AL204 type electronic balance weighing of 0.0001g with precision.
As shown in table 1, adopting the FeCrMoCBSi of powder core wire preparation provided by the present invention is the microhardness HV of amorphous alloy coating
0.110 hours relative wear resistance of test can reach 5.3 times of GCr15 bearing steel ball under＞1260,500 ℃ of conditions.
| ? | Microhardness HV 0.1 | Unit surface abrasion loss (mg/cm 2)? | Relative wear resistance |
| Embodiment 1 | 1268.6? | 36.73? | 4.7? |
| |
1260.7? | 35.54? | 4.8? |
| Embodiment 3 | 1296.5? | 33.95? | 5.1? |
| |
1265.4? | 34.95? | 4.9? |
| Embodiment 5 | 1302.5? | 32.41? | 5.3? |
| The GCr15 bearing steel | 810.26? | 171.77? | 1? |
Table 1
Claims (1)
1. an electric arc spraying FeCrMoCBSi is the amorphous alloy coating powder core wire, it is characterized in that, described powder core wire adopts stainless steel crust parcel powder core; The diameter of described powder core wire is 2.0mm; The mass percent that described powder core accounts for powder core wire is 28-42%; Each component and the quality percentage composition thereof of described powder core are: CrB:40-70%, ferrosilicon: 4-20%, chromium powder: 1-6%, molybdenum-iron: 10-20%, high carbon ferro-chrome: 1-5%, chromium carbide: 5-15%, mishmetal 0-5%.
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| CN102242329A (en) * | 2011-06-07 | 2011-11-16 | 昆山市瑞捷精密模具有限公司 | Iron-based die with function of self-lubricating manufactured by adopting electric arc spraying |
| CN103659050B (en) * | 2013-12-18 | 2016-01-06 | 江苏科技大学 | A kind of high abrasion of resistance to crackle three-eccentric-butterfly-valve plasma spray dusty material |
| CN103898434B (en) * | 2014-04-01 | 2016-11-02 | 北京工业大学 | A kind of heat-proof coating material for the protection of automobile engine hot-end component and preparation method thereof |
| CN107009048B (en) * | 2017-04-24 | 2019-01-25 | 南昌航空大学 | A kind of Fe-based amorphous welding material of Twin wire arc built-up welding |
| CN108004497A (en) * | 2017-12-06 | 2018-05-08 | 北京工业大学 | A kind of coating production of the iron-based arc spraying coating of high heat conductance |
| CN115142003B (en) * | 2021-04-16 | 2023-09-15 | 浙江福腾宝家居用品有限公司 | Alloy wire, application method thereof and cooking utensil |
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