CN1067599A - The welding method of wear-resisting coat and the high-abrasive material that is used for wherein - Google Patents
The welding method of wear-resisting coat and the high-abrasive material that is used for wherein Download PDFInfo
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- CN1067599A CN1067599A CN92103982A CN92103982A CN1067599A CN 1067599 A CN1067599 A CN 1067599A CN 92103982 A CN92103982 A CN 92103982A CN 92103982 A CN92103982 A CN 92103982A CN 1067599 A CN1067599 A CN 1067599A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
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- Mechanical Engineering (AREA)
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- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Arc Welding In General (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
Apply on ferrous metals with MIC (welding) welding machine.Used welding wire 30 compositions become the parent of coat L in welding.The sintered cemented carbide particle G of fixed amount joins among the bath P in welding.The concrete particle diameter of particle G is 0.5～3.0mm, and sintered cemented carbide particle permeates in the parent equably, accounts for 30%-70% of whole coat weight.
Description
This invention relates to a kind of welding method and the high-abrasive material that is used for wherein that forms wear-resisting coating on base metal surface.
A large amount of high-abrasive materials has been used in different places so far, as the liner of disintegrating machine, the lining of slush pump, the chute lining of blast furnace, little clock etc.
Those high-abrasive materials of producing by the additive that adds certain increase hardness, resemble high-carbon, Gao Ge etc., or the alloy that utilizes quenching performance processing to obtain high level also is produced and is used as high-abrasive material, many and tungsten chromium cobalt (hard) alloy as high manganese.Yet as a rule, the various piece of product not all is need be wear-resisting, and the wearability of these materials only is used for certain privileged sites or some position of product in many occasions.Therefore, only be worn because of exposure or the technology of some high-abrasive materials of part coated that abrasive surface needs has been used as an important problem and has used widely.
Up to the present, be suggested about the several tests that form hard layer with this coating method, those have been disclosed on the Japanese publication document NO.2-6097 at one of test of high-wearing feature.Disclosed suggestion is the 30-80% that each grade ceramic particle of adopting a kind of structure promptly to comprise accounts for coating weight on the document, the particle diameter of ceramic particle is less than 200 μ m, each grade of sintered hard alloy ball of particle diameter 0.5mm-3.0mm accounts for the 10-60% of weight, and the two is blended in the metal carrier body equably.In this case, important condition is that the above-mentioned ceramic particle that is mixed into parent as the disperse phase particle is to resemble particles such as SiC, WC, TiC, and their primary condition is stone and high-fire resistance, is welded with satisfied heat endurance for carrying out powder plasma.Simultaneously, above-mentioned sintered hard alloy ball is by tungsten carbide (WC or WC
2) the particle composition, CO, W, Ti etc. are used as binding metal.
Because concerning base metal, Ni base or CO base alloy, the high alloy net comprises considerable Ni-Cr, the starting point of using this class thing is their intensity, the adaptability between wearability and ceramic particle and sintered hard alloy ball.
In the coated process of standard, metal dust and ceramic powders are put into the plasma arc that is produced by the powder plasma rifle, be preheating to molten bath of formation on nearly 600 ℃ parent metal thus, the sintered hard alloy ball is assigned in the molten bath then, and mixing and disperse are therein.Having report to say example that the method for stating handles demonstrates wearability risen 13 times than high speed steel plate under same wear test condition.
With regard to regard to the high-abrasive material that uses on the welding method formation hard-facing layer, above-mentioned prior art can be described as one of state-of-the-art technology.Yet a fatal shortcoming is that this The Application of Technology condition is very limited, moreover this prior art specific part of being applied to product has many other restrictions.Correspondingly, this prior art promptly can not widespread usage can not extensively be promoted.
Clearer and more definite is that at first, owing to the ceramic particle that accounts for weight 30-80% need mix and permeate in the metal carrier body, the coated process is considered to be limited in powder plasma welding process rather than standard coated process.The welding equipment of powder plasma welding process is very expensive, in fact drops into and installs and uses seldom, and therefore, this have earlier that method is not talkative to have become very general and popular.On the other hand, coated process on the high-abrasive material is applicable to different local in actual applications, and the actual quite area of difficulty of public transportation that is installed in of the many equipment that adopt high-abrasive material, because one of maximum characteristics of coated high-abrasive material are when finishing after the operating point obtains the operation on a maintenance surface, permission repeatedly further repeats to repair on wearing face, and in fact the above-mentioned welding method that has earlier that can not obtain extensive and facilitated application may be useless or extremely difficult in actual applications.
The second, in above-mentioned prior art, report that parent metal need be preheating to 600 ℃, if the so high temperature of preheating is necessary, may bring great difficulty in actual applications.Moreover high-abrasive material is widely used in many machine and equipments, and the ceramic particle that mixes accounts for the 30-80% of matrix volume, and the expense of material will improve greatly.And the composition major part of parent is expensive metal, resembles Ni Base Metal or CO Base Metal, and this will impel the expense of material further to increase.
The high-abrasive material of using in equipment generally is a larger area, and as the machine of ball mill lining, the slush pump lining of dredger etc. resemble these and abrade because of exposure or the working surface that weares and teares is bigger.The corresponding expense of the material of Shi Yonging will be limited in reasonably offsetting within the scope of the expense of saving owing to acquisition of technology progress (as improving anti-wear performance) therein.
Though the problem of another existence is to have many materials to be called high-abrasive material, actual abrasion condition is very different, therefore, provides only material to consider fully exactly at different wear-resisting situations.
It is generally acknowledged that anti-wear performance is that the hardness with the surface is directly proportional, but hardness is high more, fragility is big more also to be universal law.Therefore, do not having enough considerations aspect the balance of practical operation condition and above-mentioned two kinds of performances, it is impossible using only material.It is generally acknowledged that in occasions such as disintegrating machine, collision type disintegrating machine hammer disintegrating machines, wear surface is impacted and impact load.These surfaces not only need wearability but also want anti-impact flexibility to a certain degree.In the scratch occasion of non-impact, as the scratch wearing and tearing, relevant surface needs high rigidity, rather than needs toughness, to reach its purpose.
The present invention is to be purpose in order to solve problem discussed above and the welding method of a wear-resisting coating to be provided and to be used for wherein high-abrasive material, even many small-sized or medium-sized factories and all can use in the place that machine or equipment are fixed.If desired, not only can provide the anti-wear performance of high-quality, and under corresponding wear-resisting condition, can facility and the economic only wearing face that provides.
For finishing above-mentioned purpose, may further comprise the steps according to the wear-resisting coating welding method of this invention: under nonacid protective atmosphere, for coated is placed a root bead silk forms a suitable composition on ferrous metals parent; Add the sintered cemented carbide particle of particle diameter 0.5-3.0mm in the molten bath of this parent with fixing speed.This sintered cemented carbide particle permeates into and forms a compound structure in this parent, and this sintered hard alloy accounts for the 30-70% of this coating weight.
About the high-abrasive material that obtains with this welding method, the inventor has done following improvement: material that on matrix, has a high tenacity be by grain diameter at 0.5-3.0mm, the sintered hard alloy that accounts for the 30-70% of the coating weight that deposits on ferrous metals is formed; A kind of steel that comprise the alloy part composition surround this sintered alloy particle; A kind of on matrix is to be 0.5-3.0mm by particle diameter to the particularly suitable material of scratch wearing and tearing, accounts for the sintered cemented carbide particle that is deposited on the 30-70% of coating weight on the ferrous metals and forms; Cast iron materials and this sintered cemented carbide particle of mainly comprising the tiny metal carbides of needle-like connect together, and carbide comprises the carbon of 3-7%.
Under nonoxidizing atmosphere; carrying out the employed welding machine of welding processing by this invention is to form the deposition region by the electric arc that produces from the welding torch top at parent metal; welding torch protections such as neutral (or reproducibility) gas, this is usually said welding bonding machine (the MIG bonding machine of mentioning hereinafter).Carbon dioxide, argon gas or both mists are used as protective gas usually.Welding wire about the parent that forms the deposition region then provides a solid welding wire or the property of medicine (silk of compound medicine core) under certain speed.
The welding machine of the above-mentioned type has been widely used in many factories.Can allow freely to select for use matrix arbitrarily by the welding wire that adopts property.Therefore, the validity of this welding machine and practicality are very high, if desired, even can listen the scene, stone pit to repeat assembling in the mountain area.This welding machine biggest advantage is not need preheating, is distinguished advanced welding machine.
Fertile material can in very large range be selected, fully to satisfy using the needs of high-abrasive material.
For example: resemble the high-abrasive material of the liner and so on of impact crusher, its first surface crushing force that withstands shocks makes the collision of rock or stone and broken.The lining surface of impact crusher is not only wanted wear-resisting but also will be had enough toughness to bear in the practicality to a certain degree vibrations and impact.In view of the above, in this case, preferably select for use mild steel (C:0.08%, Si:0.50%, Mn:1.10%) solid welding wire as parent.
On the contrary, as the high-abrasive material of liner of the dispatchtude of the sort of transmission urban waste and sand grains and so on, this inner lining surface power that do not withstand shocks repeats violent wearing and tearing but will tolerate.Therefore, in this case, the parent of preferably selecting for use highdensity tiny acicular carbide to form.Form the material of carbonization, for example, by C:3.0～7.0%, Si:0.5～2.0%, Mn:0.5～4.0%, Cr:20.0～35.0%, the rich chromium cast iron of composition is in addition by C:3.0～7.0%, Si:0.5～2.0%, Mn:0.5～4.0%, V:10.0～20.0%, the high vanadium cast iron that W:3.0～10.0% is formed all may be selected.
About sintered cemented carbide particle, preferably select tungsten carbide (WC or W for use
2C) sintered particles of powder, cobalt is sintered as binding metal.But these particles needn't be very round.Equally except the particle that sintering forms, the particle that those are obtained by the broken casting product is not even they are very round, as long as meet the demands and can use yet at their particle size and other element.
If mild steel is used as parent, WC particle is permeated in the molten bath of MIG welding machine formation, and part carbon and tungsten in the particle are diffused in the parent, and therefore forming one has the parent of hardness and toughness and deposit the peculiar fishbone carbide of WC.That is, the mild steel that a spot of W and C separated out and entered fusing produces the tungsten carbide that deposits, and it shows as the form of fishbone carbide in parent.The Vickers hardness of this parent reaches nearly HV850.Yet this hardness is the mean value of matrix around fishbone carbide and it, and the extreme hardness of WC own reaches Knoop hardness more than 1800.Therefore, the matrix hardness around the WC is well below this value.This is the principal element that whole parent obtains toughness and hardness.
Because it is 30～70% that sintered cemented carbide particle accounts for the ratio of whole coating weight, preferably select 50% of weight, the ratio of parent in the molten bath and fishbone tungsten carbide was near 1: 1, and this we can say that sintered cemented carbide particle and the mild steel parent that comprises the fishbone tungsten carbide will form a well balanced composite construction in coating.The microphoto of Fig. 2 (A) has shown above-mentioned a part of parent.There is the Vickers hardness of the parent of diffusion zone to reach nearly 850, Vickers hardness 600 considerably beyond the rich chromium cast iron that contains chromium 27%, therefore formed a particularly advantageous coating, sintered cemented carbide particle has wherein promptly guaranteed significant wearability, and the combination of it and parent is again harmonious.
On the other hand, forming by carbide under the situation of parent, except original hardness, the diffusion of the part of WC composition, Vickers hardness reaches 1100, therefore demonstrates high wearability, can compare with the parent of all being made up of sintered cemented carbide particle.But the resistance to impact of this parent is very poor, therefore must consider its service condition.
As above-described, utilize the welding machine of industrial extensive use, the present invention can provide the high-abrasive material of the high-quality with coating.A preferred embodiment of Miao Shuing can be known from behind, and high-abrasive material of the present invention is compared with the industrial hard Ni material of most representative high-abrasive material that generally adopts, and verified its wearability is 13 times of hard Ni material.The present invention can provide a kind of high-abrasive material of novelty outside the limitation scope of the traditional material of industrial machine and equipment.
From different materials, select parent and the harmony combination of parent under different mixing proportion according to this invention, can realize providing condition optimal high-abrasive material the wearing and tearing of any kind
Below with reference to accompanying drawing, other characteristics of this invention and advantage are along with following description will become more obvious.
Fig. 1 is the front view according to the preferred embodiment of the welding method of this invention;
Fig. 2 (A) is a metal structure microphoto of inventing resulting concrete high-abrasive material according to this; Fig. 2 (B) is the note curve of above-mentioned microphoto.
This invention more carefully is being described under with reference to example and comparative example wherein with reference to following.
Fig. 1 is according to the front view of this invention with the MIG welding machine in the preferred embodiment.
In the drawings, mobile balladeur train 4 has been installed a MIG welder head 2 and welding wire wheel 3, and mobile balladeur train is motion on the crossbeam 1 that level is installed vertically at a predetermined velocity.Arc welding gun head 2 comprises a MIG water cooled welding torch 21, forms welding arc.Wire feeder 22 makes welding wire 30 deliver to arc welding gun head 2 from welding wire wheel 3.Arc welding gun head 2 is to be attached on the mobile balladeur train 4 by a longitudinal sliding motion device 41, and it can easy on and off be moved, and also can swing the inclination angle of adjusting it and solder side.What be attached to mobile balladeur train 4 is that a carbide alloy doser is supplied with quantitative sintered hard alloy.This doser 5 comprises that a funnel 51 is adorned and waters bond hard alloy particle G that a rotary feeder 52 is supplied with quantitative alloying pellet and a tremie pipe 53.This doser 5 is these structures, and the nose motion of MIG water cooled welding torch 21 is being followed in the bottom of this tremie pipe 53 with same speed.Therefore, welding machine is supplied with quantitative sintered cemented carbide particle G among the molten bath P that forms on parent metal M, thereby forms the wear-resisting coating L of a composite construction continuously.
As an example of this invention, prepare a test block under the condition below, then, carry out a definite test with other test block in this test block and the following said comparative example.
(1) example 1
A) composition is C:6%, Cr:27%, Fe:67% combined wire is used as parent, carries out the MIG welding on the low carbon steel substrate metal, and the sintered hard alloy of adding is that particle diameter is the average 1mm of 0.7～1.2mm() sintered particles.Its composition is that the Co of 87% WC powder and 6.8% is as binding metal.Mixed proportion is 51% of a whole coating weight.
B) about welding condition, welding current is set to 300A, voltage apparatus is 25V, and protective gas is CO
2, swing width is 25mm, and speed of welding is 250mm/min, and parent metal is without preheating.
(2) comparative example 1:
With the top example 1 described coating that forms with quadrat method, but wherein do not add sintered hard alloy, coating only is made up of high chromium parent.
(3) comparative example 2:
Well-known hard Ni four class alloys with casting method production.
(4) comparative example 3:
The test block of cutting from low-carbon steel material.
Then, on (4), carry out in above-mentioned (1) with this confirmed test of rubber wheel abrasion test (RWAT).About experimental condition, the load of test block is 8.8kg, and the revolution of rubber wheel is 6000, and rotating speed is 120RPM, and the mill material is No. 6 silica sands, and the frosted discharge rate is 300g/min, and the abrasion test piece that takes off from above-mentioned material is the cuboid of 20mm * 20mm * 50mm.
Below table 1 be the result of abrasion test.
Table 1
The abraded quantity resistance to abrasion
(mg) (establishing comparative example 3 is 1)
Example 1 20.6 85.6
Comparative example 1 102.8 17.2
Comparative example 2 267.4 6.6
Comparative example 3 1764.5 1.0
Above abrasion test can think, according to the high-abrasive material of this example 1 have good wearability can, be respectively nearly 5 times of comparative example 1, be nearly 13 times of comparative example 2.
Fig. 2 (A) is the microphoto of the metal structure of another example that suitable high tenacity is arranged.The boundary member of parent metal and plated metal is to be exaggerated 400 times in metal structure.Fig. 2 (B) is the explanatory curve of above-mentioned microphoto.In photo,, adopt available mild steel (C:0.08%, Si:0.50%, a kind of welding filler wire Mn:1.10%) on the market as the welding material that forms plated metal.
In the microstructure of plated metal, to observe and to show that the fishbone carbide products is that the WC that forms of tungsten and carbon is peculiar, it is considered to some and separates out from WC particle, and this fishbone carbide is the reason that plated metal increases hardness.
This invention may be specialized with other special formation, and the spirit and the fundamental characteristics that do not break away from it.Therefore these examples be considered in all respects as illustrative, rather than binding, the invention scope of pointing out is the description with the front, not equal to be to illustrate with accessory claim book scope.For this reason, all included with the scope of claim scope equivalence and all changes within the method.
Claims (3)
1, the welding method of wear-resisting coating, the step that comprises is: the welding wire of placing for coated forms the parent of a suitable composition on ferrous metals under nonacid atmosphere; Add the sintered cemented carbide particle of particle diameter 0.5～3.0mm in the molten bath of this parent with fixing speed; This sintered cemented carbide particle permeates in this parent and forms composite construction, and this sintered cemented carbide particle accounts for 30%～70% of this coating weight.
2, its parent of a kind of high-abrasive material is made up of the sintered cemented carbide particle of particle diameter 0.5～3mm, account for the 30%-70% of the coating weight that is deposited on the ferrous metals, and a kind of low-carbon steel material that contains some alloy composition surround this sintered alloy particle and and this sintered alloy particle be associated in together.
3, a kind of scratch lost material that is applicable to, wherein parent is by along amassing particle diameter 0.5～3.0mm on ferrous metals, 30%～70% the sintered cemented carbide particle and a kind of cast iron materials of the metal carbides that needle-like is tiny that mainly comprises that account for coating weight are formed, this cast iron materials sintered cemented carbide particle is associated in together, carbide carbon containing 3～7%.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP174307/91 | 1991-06-18 | ||
| JP3174307A JPH04371390A (en) | 1991-06-18 | 1991-06-18 | Welding method for wear resistant cladding layer and wear resistant material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1067599A true CN1067599A (en) | 1993-01-06 |
Family
ID=15976372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN92103982A Pending CN1067599A (en) | 1991-06-18 | 1992-05-26 | The welding method of wear-resisting coat and the high-abrasive material that is used for wherein |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPH04371390A (en) |
| KR (1) | KR100249954B1 (en) |
| CN (1) | CN1067599A (en) |
| AU (1) | AU657310B2 (en) |
| MY (1) | MY111876A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103537783A (en) * | 2013-10-16 | 2014-01-29 | 上海工程技术大学 | Automatic MIG (metal-inert gas) welding method for hard alloy and steel |
| CN109080237A (en) * | 2018-07-25 | 2018-12-25 | 四川皇龙智能破碎技术股份有限公司 | A kind of multilayer alloying pellet large area composite material |
| CN116117281A (en) * | 2023-04-18 | 2023-05-16 | 山东高原油气装备有限公司 | High-wear-resistance continuous sucker rod clamping block machining device and machining method |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3382730B2 (en) * | 1994-08-02 | 2003-03-04 | 株式会社小松製作所 | Method of forming wear-resistant overlay and wear-resistant composite material using the method |
| US6302318B1 (en) * | 1999-06-29 | 2001-10-16 | General Electric Company | Method of providing wear-resistant coatings, and related articles |
| JP4919610B2 (en) * | 2005-03-11 | 2012-04-18 | 特殊電極株式会社 | Sintered crusher tooth |
| CN103639569A (en) * | 2013-11-13 | 2014-03-19 | 程永科 | Method for improving wear resistance of wear-resistant part of extruding machine |
| JP7048471B2 (en) * | 2018-10-17 | 2022-04-05 | 株式会社神戸製鋼所 | Method of laminating the hardened layer and method of manufacturing the laminated model |
| JP7041042B2 (en) * | 2018-10-17 | 2022-03-23 | 株式会社神戸製鋼所 | Method of laminating the hardened layer and method of manufacturing the laminated model |
| CN113547192A (en) * | 2021-07-08 | 2021-10-26 | 自贡硬质合金有限责任公司 | Hard alloy wear-resistant block and preparation method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4097711A (en) * | 1976-09-16 | 1978-06-27 | Ingersoll-Rand Company | Roller shell hard coating |
| US4243727A (en) * | 1977-04-25 | 1981-01-06 | Hughes Tool Company | Surface smoothed tool joint hardfacing |
| ZA773813B (en) * | 1977-06-24 | 1979-01-31 | De Beers Ind Diamond | Abrasive compacts |
| US4219592A (en) * | 1977-07-11 | 1980-08-26 | United Technologies Corporation | Two-way surfacing process by fusion welding |
| DE2829597A1 (en) * | 1978-07-05 | 1980-01-24 | Schwaebische Huettenwerke Gmbh | Metal workpiece with soldered joint - made using porous sintered metal disk entered by molten solder or brazing alloy to make very strong joints |
| JPH026097A (en) * | 1988-06-25 | 1990-01-10 | Kubota Ltd | Wear resistant overlay layer |
-
1991
- 1991-06-18 JP JP3174307A patent/JPH04371390A/en active Pending
-
1992
- 1992-03-04 MY MYPI92000352A patent/MY111876A/en unknown
- 1992-03-19 AU AU13052/92A patent/AU657310B2/en not_active Ceased
- 1992-05-26 CN CN92103982A patent/CN1067599A/en active Pending
- 1992-06-18 KR KR1019920010566A patent/KR100249954B1/en not_active IP Right Cessation
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103537783A (en) * | 2013-10-16 | 2014-01-29 | 上海工程技术大学 | Automatic MIG (metal-inert gas) welding method for hard alloy and steel |
| CN109080237A (en) * | 2018-07-25 | 2018-12-25 | 四川皇龙智能破碎技术股份有限公司 | A kind of multilayer alloying pellet large area composite material |
| CN116117281A (en) * | 2023-04-18 | 2023-05-16 | 山东高原油气装备有限公司 | High-wear-resistance continuous sucker rod clamping block machining device and machining method |
| CN116117281B (en) * | 2023-04-18 | 2023-09-15 | 山东高原油气装备有限公司 | High-wear-resistance continuous sucker rod clamping block machining device and machining method |
Also Published As
| Publication number | Publication date |
|---|---|
| KR930000199A (en) | 1993-01-15 |
| JPH04371390A (en) | 1992-12-24 |
| KR100249954B1 (en) | 2000-04-01 |
| AU1305292A (en) | 1993-01-21 |
| MY111876A (en) | 2001-02-28 |
| AU657310B2 (en) | 1995-03-09 |
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