CN109112381B - A kind of built-up welding cermet powder agglomates - Google Patents
A kind of built-up welding cermet powder agglomates Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
- C22C27/04—Alloys based on tungsten or molybdenum
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
- B22F1/105—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material containing inorganic lubricating or binding agents, e.g. metal salts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/10—Alloys containing non-metals
- C22C1/1084—Alloys containing non-metals by mechanical alloying (blending, milling)
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0005—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with at least one oxide and at least one of carbides, nitrides, borides or silicides as the main non-metallic constituents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/041—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by mechanical alloying, e.g. blending, milling
Abstract
The present invention provides a kind of built-up welding ternary boride cement Mo2FeB2Alloy powder block is composed of the following raw materials in parts by weight: 20~38 parts of ferro-boron, 32~50 parts of molybdenum powder, 7~24 parts of iron powder, 2~4 parts of nano silicon carbide titanium valve, 2~4 parts of yttrium powder of oxidation.Ferro-boron, molybdenum powder, iron powder is used to synthesize Mo for raw material metallurgical reaction2FeB2When, suitable nano silicon carbide titanium valve is added, during Welding Metallurgy, since nano silicon carbide titanium valve fusing point is up to 3140 DEG C, can be used as the Mo of disperse in liquid metal2FeB2Non-spontaneous forming core core makes the ternary boride Mo to be formed2FeB2Dispersed precipitate, therefore deposited metal has excellent high temperature hardness, wear-resisting property and good toughness and cracking resistance.Step is simple and convenient to operate, is practical.
Description
Technical field
The invention belongs to built-up welding field of welding material, and in particular to a kind of built-up welding cermet powder agglomates and its system
Preparation Method and application.
Background technique
In industrial production and processing, machine components often work under complex and exacting terms, a large amount of mechanical
Equipment is often scrapped because of abrasion, corrosion or abrasion.This requires in high temperature and pressure, bear compared with big load and oxidation, corrosion
Etc. mechanized equipment surface under operating conditions there is good wear-resisting, corrosion-resistant, high temperature resistant and the performances such as anti-oxidant.Built-up welding is because of work
Skill is simple, equipment investment is few, flexible operation, adapts to wide and is widely used in preparing property metal layer in piece surface.
The method of built-up welding have manual electric arc pile up welding, oxy-acetylene surfacing, automatic submerged-arc bead welding, Gas Shielded welding, etc. from
Sub- built-up welding, electroslag surfacing etc..People are to adapt to various overlaying methods to develop various resurfacing welding materials, such as common surfacing welding,
Flux-cored wire, alloyed steel strip, alloy powder, alloy powder block etc..Hardfacing alloy powder agglomates is because its preparation process is simple, constituent adjustment holds
Easily, recovery is high, easy to use and be concerned by people.Chinese patent CN85102440B " surfacing welding alloy powder
Block ", which is proposed, to be prepared into alloy block for alloy powder and is used for built-up welding, the abrasion-resistant alloy cake be by rich chromium cast iron, ferro-boron, ferrosilicon,
Waterglass bonding agent is added after mixing in proportion in iron powder, is added in mold by constant weight, imposes appropriate pressure and be molded into
After type, then dries moisture and be made.The geometry for the proprietary alloy powder agglomates applied at present be having a size of 90mm × 30mm ×
3mm, 60mm × 30mm × 3mm or other sizes cuboid (see " the northwest electricity technology " of document the 4th phase in 1998,1997
" the Chinese beet sugar industry " of the 1st phase of year).Deposition heat source is electric arc (such as carbon arc, plasma arc, tungsten argon arc).
Alloy powder block used at present is mostly high-chromium cast iron-type, and deposited metal impact resistance is poor, bead-on-plate weld table
There is crackle in face, and wear resistance at elevated temperature is also to be improved.In order to expand the application range of alloy powder block, it is badly in need of developing some alloy systems
Alloy powder block.It is high hard with the increasingly harshness of component of machine applying working condition, such as abrasion, burn into high temperature, alternating load
Degree, the hardfacing alloy that high-temperature stability is excellent, high-corrosion resistance, thermal fatigue property are good are in urgent need.Mo2FeB2Ternary boronation
Object based ceramic metal has high-melting-point, high rigidity, excellent high-temperature stability and corrosion resistance, can use Mo, Fe, FeB etc.
Low price powder prepares alloy powder block, passes through electric arc deposited acquisition Mo2FeB2Ternary Boride Base Cermets deposited metal, this
The hot-work die service life for requiring high-temperature wearable, anti-fatigue performance good raising is of great significance.
Wen Yongce etc. about " progress of ternary boride system hardfacing alloy " (see document the 5th phase in 2017 " it is accurate at
Shape engineering "): ternary boride ceramic coating or the metal overlay containing ternary boride ceramic particle phase both have metal
The toughness and workability of matrix, while having the high rigidity and high-wearing feature of ceramic phase particles concurrently again, using increasingly extensive.
Summary analyzes the progress of Ternary Boride Base Cermets, describes related forming technology, alloying element to ternary boron
The influence of compound microstructure of surface cladding layer and performance.The progress of ternary boride hardfacing alloy is finally highlighted.
Paper discloses " research of Mo-Fe-B system hardfacing alloy microstructure and property " (Wang Guangle, Shandong University master opinion
Text, in May, 2017), Mo-Fe-B system hardfacing alloy powder agglomates is devised, and have studied Mo, B, N content to hardfacing alloy powder agglomates
The influence of energy.But its high temperature hardness, wear-resisting property are still wait further increase, fatigue behaviour of the paper without reference to deposited metal.
Summary of the invention
In order to overcome above-mentioned deficiency, the present invention provides a kind of matching for new alloy powder block on the basis of studying before
Method processed forms ternary boride Mo2FeB2While cermet hard phase, excessive Mo can play alloying, and refinement is brilliant
Grain, solution strengthening form carbide, improve the high-temperature behavior and wear-resisting property of deposited metal.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of built-up welding ternary boride cement Mo2FeB2Alloy powder is composed of the following raw materials in parts by weight: boron
20~38 parts of iron, 32~50 parts of molybdenum powder, 7~24 parts of iron powder, 2~4 parts of nano silicon carbide titanium valve, 2~4 parts of yttrium powder of oxidation.
The application research discovery: ferro-boron, molybdenum powder, iron powder is used to synthesize Mo for raw material metallurgical reaction2FeB2When, it is added appropriate
Nano silicon carbide titanium valve, can in liquid metal since nano silicon carbide titanium valve fusing point is up to 3140 DEG C during Welding Metallurgy
Mo as disperse2FeB2Non-spontaneous forming core core makes the ternary boride Mo to be formed2FeB2Dispersed precipitate, therefore deposited metal
With excellent high temperature hardness, wear-resisting property and good toughness and cracking resistance.
In some embodiments, in the raw material further include: 4~8 parts of electrolytic manganese metal, 5~10 parts of crome metal, graphite 0
~3 parts, 3~6 parts of metal nickel powder.
The effect of electrolytic manganese metal is component controlling, and manganese metal impurity content is few, conducive to the purification of deposited metal, with
Ensure intensity, improves toughness, improves fatigue behaviour effect.However, deoxidation effect is poor when being lower than 4 parts by weight, and when excessive, group
Knit hardening, toughness reduces, therefore, it is recommended that usage amount be 4~8 parts by weight.
Crome metal is to ensure that the basis of corrosion resistance and elevated temperature strength.Its effect is to deposited metal transition Cr, Cr
Iron-based eutectic structure can be not only dissolved in, solution strengthening effect is played to deposited metal, while can also be present in Mo2FeB2Ternary boronation
In object hard phase.A certain amount of Cr, which is added, can replace the position of normal lattice point in eutectic structure to cause distortion of lattice, one
Determine to play the role of alloy strengthening in degree, improve the toughness and hardness of eutectic structure, increases the anti-plow of hardfacing alloy
With the ability of hard-phase particles peel, to improve the wearability of overlay cladding.Crome metal impurity content is few, is conducive to built-up welding gold
The purification of category improves intensity and fatigue behaviour.In order to guarantee elevated temperature strength in the application, recommending the usage amount of chromium is 5-8 parts.
Graphite is the formation indispensable element of carbide in welding metal, when quantity of graphite is less than 0.01 part, welding gold
The intensity of category is inadequate, and when more than 3 parts, the tissue of welding metal is significantly hardened, and therefore, the optimum range of graphite is 0.01-3 weight
Part.
Ni is the element for generating austenite, when Cr is 5-8 parts, when excess is added in Ni, can generate martensitic structure, group
Hardening is knitted, cracking resistance and anti-bending strength are deteriorated, and therefore, are scheduled on 3-6 parts by weight.
In some embodiments, in the raw material further include: bonding agent is 5~15 parts, plasticizer is 0~8 part.In favor of
Above-mentioned alloy powder is pressed into bulk.
In some embodiments, 2-6 parts of 45# ferrosilicon, 1-4 parts of ferrotianium, 2-6 parts of vanadium iron are additionally added in the powder agglomates formula.
In order to which alloy powder can be formed effectively after molding, the application is also additional to be added while binder is added
Some to improve alloy powder plasticity or slip substance, in further embodiments, the plasticizer is titanium dioxide and/or cloud
It is female.
In some embodiments, the partial size of each metal alloy powders is 90~160 microns in raw material.
In some embodiments, the ingredient of titanium dioxide TiO by percentage to the quality2Content is not less than 98%；Mica at
Divide SiO by percentage to the quality2Content is 43%-50%, Al2O3Content is 20%-35%, K2O+Na2O content is 7%-
11%, K2O content is not less than 6%；Mn content is not less than 99.5% to the ingredient of electrolytic manganese metal by quality ratio；45# ferrosilicon
Ingredient is 40.0%~47.0%Si, 0.1%C, Yu Wei Fe and the impurity for not influencing performance by quality ratio；The ingredient of ferrotianium with
Mass ratio meter is 35%~45%Ti, and Al is no more than 9.0%, Si and is no more than 2.5%, Yu Wei Fe and not shadow no more than 3.5%, Mn
Ring the impurity of performance；Cr content is not less than 98% to the ingredient of crome metal by quality ratio；The ingredient of ferro-boron B content by quality ratio
It is no more than 0.1%, Si content for 19-21%, C content and is no more than no more than 4.0%, Al content no more than 3.0%, S content
0.01%, P content is no more than 0.03%；The ingredient of graphite is 94%~99%C by quality ratio；The ingredient of vanadium iron is with mass ratio
Meter is 75%-85%V, and C is no more than 0.06%, Si and is no more than 2%, Al no more than 1.5%, Yu Wei Fe and does not influence the miscellaneous of performance
Matter；Mo content is not less than 99.8% to the ingredient of molybdenum powder by quality ratio；Ni content is not small by quality ratio for the ingredient of metal nickel powder
In 98%；The ingredient of yttrium oxide powder Y by percentage to the quality2O3Content is not less than 99%；Iron powder is atomized iron powder, with quality
It is not less than 99.9% than meter Fe content；The granularity of above-mentioned powder is 75 microns~180 microns, and (i.e. granularity is -80 mesh~+200
Mesh)；TiC content is not less than 99.9% to the ingredient of nano titanium carbide by percentage to the quality, and 99% or more granularity is received less than 40
Rice；Allow in the ingredient of above-mentioned medicinal powder containing the impurity for not influencing its performance for being difficult to remove in process.
The present invention also provides a kind of built-up welding ternary boride cement Mo2FeB2The preparation method of alloy powder, packet
It includes:
A. processing is passivated to more active raw metal；
B. nonmetallic raw material powder, raw metal powder are premixed respectively, according still further to any above-mentioned formula rate
Be blended, obtain dry-mixed powder, be added binder into dry-mixed powder, molding to get.
In some embodiments, the built-up welding is carbon arc, tungsten electrode arc.
Beneficial effects of the present invention
(1) alloy powder block that this patent proposes is by the rational design of cross-sectional geometry, so that electric arc deposited work
Skill performance significantly improves, flexible and convenient to use, automation built-up welding easy to accomplish, can be used for the manufacture of hot-work die and repairs
It is multiple.
(2) ingredient of deposited metal can be by changing the adjustment of alloy powder block formula, it is possible to produce series of products are used for
Different operating conditions, have a wide range of application.
(3) this patent alloy powder block optimizes Mo, B, Fe, Cr, Ni, nano silicon carbide Ti content, has deposited metal good
Good high-temperature oxidation resistance and high temperature hardness, toughness and cracking resistance, anti-fatigue performance are excellent.
(4) nano titanium carbide is added in this patent alloy powder block in medicinal powder, during Welding Metallurgy, since titanium carbide is molten
Up to 3140 DEG C of point, as the Mo of disperse in liquid metal2FeB2Non-spontaneous forming core core, makes the ternary boride to be formed
Mo2FeB2Dispersed precipitate, therefore deposited metal has excellent high temperature hardness, wear-resisting property and good toughness and crack resistance
Energy.Meanwhile nanoscale titanium carbide powder activity is big, metallurgical reaction is acutely abundant, and can making up arc surfacing molten bath, there are the times
Drawback short, metallurgical reaction is insufficient.
(5) preferred (as selected pure metal, the using ferroalloy less) of this patent alloy powder block raw material and addition rare earth oxygen
Change yttrium, reduce deposited metal inclusion content, make inclusion balling, refines crystal grain, improve toughness, the plasticity of deposited metal
And anti-fatigue performance.
(6) alloy powder block that this patent proposes can be automatic using existing welding rod using the hydraulic powder coating machine production of welding rod
Production line does not have to new purchase production equipment, and production efficiency is higher.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
The cross sectional shape diagram of Fig. 1 alloy part powder agglomates of the present invention；
The electric arc deposited alloy powder block method schematic diagram of Fig. 2；
Fig. 3 is plus nano titanium carbide deposited metal optical microscopy macrograph in the embodiment of the present application 1；
Fig. 4 is the non-plus nano titanium carbide deposited metal optical microscopy macrograph of the application comparative example 1；
Wherein: 1 alloy powder block, 2 are intended to deposited metal (matrix).
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
A kind of alloy powder block used for built-up welding and the preparation method and application thereof.
Technical concept of the invention is: selection metal and ferroalloy powder (abbreviation powder) are uniformly mixed by design proportion
Afterwards, the plasticizer of the bonding agent and 0~8% that account for powder gross mass 5~15% is added, using the liquid of molding or welding rod production
Powder coating machine is pressed, alloy powder block is produced.
Alloy powder block used for built-up welding of the present invention, it is characterized in that: requirement of the alloy powder block according to deposited metal,
Composition is calculated as with mass parts, and bonding agent is 5~15 parts, plasticizer is 0~8 part, electrolytic manganese metal 4-8,45# ferrosilicon 2-6, ferrotianium
1-4, crome metal 5-10, ferro-boron 20-38, graphite 0-3, vanadium iron 2-6, molybdenum powder 32-50, metal nickel powder 3-6, iron powder 2-8, nano-sized carbon
Change titanium valve 2-4, aoxidizes yttrium powder 2-4.
In above-mentioned alloy powder block used for built-up welding: the additional amount of the bonding agent based on parts by weight, preferably 8~12 parts.
In above-mentioned alloy powder block used for built-up welding: the bonding agent is waterglass, and the modulus of waterglass is 2.5~3.0, Baume
Degree is 39~50.
Wherein: the modulus of the waterglass is preferably 2.8-3.0, Baume degrees 50.
In above-mentioned alloy powder block used for built-up welding: the waterglass is sodium silicate or potassium sodium mixing waterglass, wherein potassium sodium
The mass fraction for mixing the potassium of waterglass is 1~3, the mass fraction of sodium is 1.
In above-mentioned alloy powder block used for built-up welding: the plasticizer is one of titanium dioxide, mica.
Wherein: the preferred titanium dioxide of the plasticizer.
In above-mentioned alloy powder block used for built-up welding: the cross section of the alloy powder block solid is semicircle, and radius is
4mm-15mm is shown in Fig. 1.The cross section of the alloy powder block is semicircle, and the length of powder agglomates is any true according to overlaying surface needs are intended to
It is fixed, but the alloy powder block is on being intended to overlaying surface when arranging, stitching portion powder agglomates edge with a thickness of 0-0.1mm, see Fig. 2.
Hardfacing alloy powder agglomates containing nano silicon carbide titanium valve, during Welding Metallurgy, since its fusing point is up to 3140 DEG C,
As the Mo of disperse in liquid metal2FeB2Non-spontaneous forming core core makes the ternary boride Mo to be formed2FeB2Dispersed precipitate,
Therefore deposited metal has excellent high temperature hardness, wear-resisting property and good toughness and cracking resistance.So nano-sized carbon
The basic material for changing titanium valve preferably as alloy powder block uses.
When the content of nano titanium carbide is lower than 2 mass parts, high temperature hardness, wear-resisting property, toughness and cracking resistance are bad.
On the other hand, if the content of nano silicon carbide titanium valve is higher than 4 mass parts, the abrasion resistance, heat resistance of deposited metal, corrosion resistance
Improve limited, cost also increases.The present invention has been acknowledged by following result: if the content of nano silicon carbide titanium powder is not less than 2 matter
When measuring part and being no more than 4 mass parts, the high temperature hardness expected, wear-resisting property, toughness and cracking resistance can get.
The main function of oxidation yttrium element is purification deposited metal, nodularization field trash, promotes to form the ternary of Dispersed precipitate
Boride Mo2FeB2, the hard phases such as titanium carbide, improve deposited metal high temperature abrasion resistance and anti-fatigue performance.For its content,
Although cannot treat different things as the same, when the content of yttrium oxide is lower than 2 mass parts, the Metamorphism treatment effect of yttrium oxide may result in
Weaken.On the other hand, the content of yttrium oxide be higher than 4 mass parts when, may result in toughness and the cracking resistance of deposited metal with
And therefore the additional amount of yttrium oxide is limited between 2-4 mass parts by high temperature hardness and wear resistance decrease in the application.
Ferro-boron, molybdenum powder, iron powder are metallurgical reaction synthesis Mo2FeB2Raw material obtained heat-resisting by the proportion optimizing of raw material
The excellent hard phase of wear-resisting property.
In above-mentioned alloy powder block formula, the ingredient of titanium dioxide TiO by percentage to the quality2Content is not less than 98%；Mica
Ingredient SiO by percentage to the quality2Content is 43%-50%, Al2O3Content is 20%-35%, K2O+Na2O content is 7%-
11%, K2O content is not less than 6%；Mn content is not less than 99.5% to the ingredient of electrolytic manganese metal by quality ratio；45# ferrosilicon
Ingredient is 40.0%~47.0%Si, 0.1%C, Yu Wei Fe and the impurity for not influencing performance by quality ratio；The ingredient of ferrotianium with
Mass ratio meter is 35%~45%Ti, and Al is no more than 9.0%, Si and is no more than 2.5%, Yu Wei Fe and not shadow no more than 3.5%, Mn
Ring the impurity of performance；Cr content is not less than 98% to the ingredient of crome metal by quality ratio；The ingredient of ferro-boron B content by quality ratio
It is no more than 0.1%, Si content for 19-21%, C content and is no more than no more than 4.0%, Al content no more than 3.0%, S content
0.01%, P content is no more than 0.03%；The ingredient of graphite is 94%~99%C by quality ratio；The ingredient of vanadium iron is with mass ratio
Meter is 75%-85%V, and C is no more than 0.06%, Si and is no more than 2%, Al no more than 1.5%, Yu Wei Fe and does not influence the miscellaneous of performance
Matter；Mo content is not less than 99.8% to the ingredient of molybdenum powder by quality ratio；Ni content is not small by quality ratio for the ingredient of metal nickel powder
In 98%；The ingredient of yttrium oxide powder Y by percentage to the quality2O3Content is not less than 99%；Iron powder is atomized iron powder, with quality
It is not less than 99.9% than meter Fe content；The granularity of above-mentioned powder is 75 microns~180 microns, and (i.e. granularity is -80 mesh~+200
Mesh)；TiC content is not less than 99.9% to the ingredient of nano titanium carbide by percentage to the quality, and 99% or more granularity is received less than 40
Rice.Allow in the ingredient of above-mentioned medicinal powder containing the impurity for not influencing its performance for being difficult to remove in process.
The effect of each component is as follows in above-mentioned alloy powder block:
The effect of titanium dioxide is to improve the plasticity and binding performance of medicinal powder, improves the intensity of alloy powder block.
The effect of mica is to improve the plasticity and binding performance of medicinal powder, increases the gas permeability of alloy powder block, is conducive to coating water
Divide discharge, avoid cracking, improves alloy powder block intensity.
Ferro-boron, molybdenum powder and iron powder react to form ternary boride Mo by following Welding Metallurgy2FeB2Cermet hard
Phase, excessive Mo can play alloying, refine crystal grain, and solution strengthening forms carbide, improves the high-temperature behavior of deposited metal
And wear-resisting property.
Fe+FeB=Fe2B
2Mo+2FeB=Mo2FeB2+Fe
Mo+2Fe2B=Mo2FeB2+3Fe
The effect of crome metal is not only to be dissolved in iron-based eutectic structure Resistance of Weld Metal to weld metal transition Cr, Cr to play
Solution strengthening effect, while can also be present in Mo2FeB2In ternary boride hard phase.A certain amount of Cr, which is added, can replace eutectic
Alloy strengthening is played the role of to cause distortion of lattice in the position of normal lattice point to a certain extent in tissue, improves altogether
The toughness and hardness of crystalline substance tissue, increase the anti-plow of hardfacing alloy and the ability of hard-phase particles peel, to improve
The wearability of overlay cladding.Cr content reaches 11% or more the high-temperature oxidation resistance that can also improve deposited metal.Metal chromium impurity
Content is few, conducive to the purification of deposited metal.
Based on research before, the preparation method of alloy powder block used for built-up welding of the present invention is hydraulic using molding or welding rod
Powder coating machine preparation, specific method is:
(1) molding preparation
The step of alloy powder block molding preparation, is as follows:
1) ferroalloy passivation is passivated processing to ferrosilicon used in alloy powder block, manganese metal, crome metal, in powder
The surface of particle forms layer oxide film, avoids reacting with the free alkali in bonding agent waterglass, prevents alloy powder block from blistering.It will
45# ferrosilicon, manganese metal, crome metal are respectively placed in heat-resisting steel disk, ulking thickness 30mm-40mm, and when roasting stirs 3-5
It is secondary.The technological parameter of roasting are as follows: 45# ferrosilicon is 700 DEG C~800 DEG C, keeps the temperature 1 hour, furnace cooling；Manganese metal be 280 DEG C~
320 DEG C, 1 hour is kept the temperature, furnace cooling；Crome metal is 550 DEG C~580 DEG C, keeps the temperature 1 hour, furnace cooling.Other ferroalloys without
It needs to handle, supply of material state uses.
2) it is pressed and molded
According to the formula of cermet powder agglomates, first the lesser titanium dioxide of specific gravity, mica, graphite are claimed by formula rate
It is mixed after amount, it is 10-15 minutes dry-mixed with existing mixed powder machine, obtain non-alloyed mixed powder；Then electrolysis step 1) being passivated
Manganese metal, 45# ferrosilicon, crome metal and the ferrotianium without passivation, ferro-boron, vanadium iron, molybdenum powder, metal nickel powder, iron powder, nano titanium carbide
The deoxidizing alloys such as powder, oxidation yttrium powder are added in non-alloyed mixed powder after weighing by formula rate, are further continued for mixed powder 8-15 points
Clock obtains dry-mixed powder.
Then alloy powder block formula is pressed, waterglass bonding agent is added in dry-mixed powder, wet-mixing is uniformly mixed, and obtains wet feed；It adopts
Plasticizer can be not added when producing alloy powder block with mould pressing process.
Modulus tool, wherein by above-mentioned wet feed filling, pressure to the alloy powder block for applying 50MPa or more form.
At a temperature of 20 DEG C~60 DEG C, after molding alloy powder block is dried 8 hours~48 hours, then 150 DEG C~180
Heat preservation drying 30 minutes~50 minutes at a temperature of DEG C, after moisture completely removes, are made alloy powder block finished product.
The proportion of the alloy powder block is as follows in terms of mass parts: bonding agent is 5~15 parts, plasticizer is 0~8 part, electrolysis
Manganese metal 4-8,45# ferrosilicon 2-6, ferrotianium 1-4, crome metal 5-10, ferro-boron 20-38, graphite 0-3, vanadium iron 2-6, molybdenum powder 32-50,
Metal nickel powder 3-6, iron powder 2-8, nano silicon carbide titanium valve 2-4 aoxidize yttrium powder 2-4.The granularity of nano silicon carbide titanium valve is 99% or more
Less than 40 nanometers, the granularity of other powder is 75 microns~180 microns (i.e. granularity is -80 mesh~+200 mesh).
(2) prepared by welding rod power-coating machine
It is as follows that welding rod power-coating machine prepares the step of alloy powder block:
1) ferroalloy passivation is passivated processing to ferrosilicon used in alloy powder block, manganese metal, crome metal, in powder
The surface of particle forms layer oxide film, avoids reacting with the free alkali in bonding agent waterglass, prevents alloy powder block from blistering.It will
45# ferrosilicon, manganese metal, crome metal are respectively placed in heat-resisting steel disk, ulking thickness 30mm-40mm, and when roasting stirs 3-5
It is secondary.The technological parameter of roasting are as follows: 45# ferrosilicon is 700 DEG C~800 DEG C, keeps the temperature 1 hour, furnace cooling；Manganese metal be 280 DEG C~
320 DEG C, 1 hour is kept the temperature, furnace cooling；Crome metal is 550 DEG C~580 DEG C, keeps the temperature 1 hour, furnace cooling.Other ferroalloys without
It needs to handle, supply of material state uses.
2) the hydraulic powder coating machine preparation of welding rod
According to the formula of cermet powder agglomates, first the lesser titanium dioxide of specific gravity, mica, graphite are claimed by formula rate
It is mixed after amount, it is 10-15 minutes dry-mixed with existing mixed powder machine, obtain non-alloyed mixed powder；Then electrolysis step 1) being passivated
Manganese metal, 45# ferrosilicon, crome metal and the ferrotianium without passivation, ferro-boron, vanadium iron, molybdenum powder, metal nickel powder, iron powder, nano titanium carbide
The deoxidizing alloys such as powder, oxidation yttrium powder are added in non-alloyed mixed powder after weighing by formula rate, are further continued for mixed powder 8-15 points
Clock obtains dry-mixed powder.
Then alloy powder block formula is pressed, waterglass bonding agent is added in dry-mixed powder, wet-mixing is uniformly mixed, and obtains wet feed.
Change the plug die of the hydraulic powder coating machine of welding rod according to the cross sectional shape and size that alloy powder block designs, then according to
Conventional welding rod producting rule suppresses alloy powder block, in pressing process, closes the wire feed system of the hydraulic powder coating machine of welding rod, is not sent into
Welding wire.As needed before baking by the alloy powder block of extrusion, longitudinal length is intercepted as needed.
By the above-mentioned alloy powder block suppressed at a temperature of 20 DEG C~60 DEG C, after drying 8 hours~48 hours, then 150
DEG C~180 DEG C at a temperature of heat preservation drying 30 minutes~50 minutes, after moisture completely removes, be made alloy powder block finished product.
The proportion of the alloy powder block is as follows in terms of mass parts: bonding agent is 5~15 parts, plasticizer is 0~8 part, electrolysis
Manganese metal 4-8,45# ferrosilicon 2-6, ferrotianium 1-4, crome metal 5-10, ferro-boron 20-38, graphite 0-3, vanadium iron 2-6, molybdenum powder 32-50,
Metal nickel powder 3-6, iron powder 2-8, nano silicon carbide titanium valve 2-4 aoxidize yttrium powder 2-4.The granularity of nano silicon carbide titanium valve is 99% or more
Less than 40 nanometers, the granularity of other powder is 75 microns~180 microns (i.e. granularity is -80 mesh~+200 mesh).
Titanium dioxide, mica in above two preparation method formula are plasticizer, the preferred titanium dioxide of plasticizer.Guaranteeing to press
Its additional amount is as few as possible under the premise of applying performance, and the amount of being preferably added to is 2 parts~6 parts.
The additional amount that above-mentioned waterglass bonding agent is preferentially selected is 8 parts~12 parts.
The hydraulic powder coating machine of welding rod has higher production efficiency compared with molding, should preferentially select.
Alloy powder block used for built-up welding of the present invention is used to prepare using electric arc deposited mode with wear-resisting, corrosion-resistant, resistance to height
Warm or oxidation resistant superficial layer.
According to the above-mentioned alloy powder block composition of the application and feature, it is recommended to use carbon arc in bead-welding technology and tungsten electrode arc is molten
It applies；Specific technological parameter is recommended to use the process conditions of research before applicant, determination.
The determination principle of alloy powder block cross-sectional shape is that the stitching portion thickness of alloy powder block is very small when electric arc deposited, with
Electric arc is set to penetrate readily through alloy powder block fusing base material.Therefore, select cross-sectional shape for semicircular alloyed powder when electric arc deposited
Block, application method are shown in Fig. 2, and alloy powder block is longitudinally covered in overlaying surface, and there are the gaps of 0~5mm between alloy powder block.It is molten
Arcing is in alloy powder block stitching portion when applying, and under the action of arc heat, base material position is melted quickly forms molten bath, molten bath
Liquid metal fills the gap of alloy powder block, improves the capacity of heat transmission of powder agglomates, accelerates powder agglomates fusing.Molten bath will be electric after being formed
Arc horizontal swing, the speed of horizontal swing determines by the burn-off rate of alloy powder block, make electric arc act on always alloy powder block and
On the interface of liquid metal.By the continuous expansion in molten bath, alloy powder block is all melted, final solidified formation overlay cladding.In detail
Thin step can be found in patent CN 101053931A.
Above-mentioned cermet powder agglomates determines welding condition according to different electric arc deposited technique, deposited metal
Hardness is HRC55-68.
Embodiment 1:
The formula of cermet powder agglomates is calculated as with mass parts, bonding agent 15, plasticizer 8, electrolytic manganese metal 4,
45# ferrosilicon 2, ferrotianium 4, crome metal 10, ferro-boron 38, graphite 3, vanadium iron 6, molybdenum powder 50, metal nickel powder 3, iron powder 8, nano titanium carbide
Powder 4 aoxidizes yttrium powder 4.The granularity of nano silicon carbide titanium valve is 99% or more less than 40 nanometers, and the granularity of other powder is 75 microns
~180 microns (i.e. granularity is -80 mesh~+200 mesh).
Binder is sodium silicate, modulus 3.0, Baume degrees 50.Plasticizer is titanium dioxide.
(1) 45# ferrosilicon, manganese metal, crome metal are respectively placed in heat-resisting steel disk by ferroalloy passivation, and ulking thickness is
30mm is stirred 3 times when roasting.The technological parameter of roasting are as follows: 45# ferrosilicon is 700 DEG C, keeps the temperature 1 hour, furnace cooling；Manganese metal
It is 280 DEG C, keeps the temperature 1 hour, furnace cooling；Crome metal is 550 DEG C, keeps the temperature 1 hour, furnace cooling.Other ferroalloys are without place
Reason, supply of material state use.
(2) according to the formula of cermet powder agglomates, first the lesser titanium dioxide of specific gravity, graphite are weighed by formula rate
After mix, with existing mixed powder machine dry-mixed 10 minutes, obtain non-alloyed mixed powder；Then electrolytic metal step (1) being passivated
Manganese, 45# ferrosilicon, crome metal and the ferrotianium without passivation, ferro-boron, vanadium iron, molybdenum powder, metal nickel powder, iron powder, nano silicon carbide titanium valve,
The deoxidizing alloys such as oxidation yttrium powder are added in non-alloyed mixed powder after weighing by formula rate, are further continued for mixed powder 8 minutes, are obtained
Dry-mixed powder.
Then alloy powder block formula is pressed, waterglass bonding agent is added in dry-mixed powder, wet-mixing is uniformly mixed, and obtains wet feed.
It is determining for 10mm according to the radius that the cross sectional shape and size that alloy powder block designs changes the hydraulic powder coating machine of welding rod
Then diameter mould suppresses alloy powder block according to conventional welding rod producting rule, in pressing process, close sending for the hydraulic powder coating machine of welding rod
Silk system, is not sent into welding wire.As needed before baking by the alloy powder block of extrusion, longitudinal length 50mm is intercepted as needed.
By the above-mentioned alloy powder block suppressed at a temperature of 60 DEG C, after drying 8 hours, then keeps the temperature and dry at a temperature of 150 DEG C
It is 50 minutes dry, after moisture completely removes, alloy powder block finished product is made.
The alloy powder block produced according to the above method is placed in Q345 surface of steel plate, the gap between powder agglomates is 1mm, then
It is electric arc deposited with TIG, technological parameter are as follows: welding current 350A, voltage 20V, argon flow 25L/min, cooling water flow
Amount is 20L/min.Gap location of the arcing between alloy powder block, under the action of arc heat, base material position is melted quickly
Molten bath is formed, the gap of the liquid metal filling alloy powder block in molten bath improves the capacity of heat transmission of powder agglomates, it is molten to accelerate powder agglomates
Change.Molten bath swings laterally electric arc after being formed, and the speed of horizontal swing is determined by the burn-off rate of alloy powder block, makes electric arc always
It acts on the interface of alloy powder block and liquid metal.By the continuous expansion in molten bath, alloy powder block is all melted, is finally coagulated
Solid is at overlay cladding.Experiments have shown that overlay cladding does not have crackle, molding is good, and 20 DEG C of hardness average values of deposited metal room temperature are
HRC68,600 DEG C of hardness average values are HV644.
Embodiment 2:
The formula of cermet powder agglomates is calculated as with mass parts, bonding agent 10, plasticizer 2, electrolytic manganese metal 8,
45# ferrosilicon 6, ferrotianium 2, crome metal 5, ferro-boron 20, vanadium iron 2, molybdenum powder 32, metal nickel powder 6, iron powder 2, nano silicon carbide titanium valve 2, oxidation
Yttrium powder 2.The granularity of nano silicon carbide titanium valve is 99% or more less than 40 nanometers, and the granularity of other powder is 75 microns~180 micro-
Rice (i.e. granularity is -80 mesh~+200 mesh).
Binder is potassium sodium mixing waterglass, and the mass fraction of potassium is 2, and the mass fraction of sodium is 1, modulus 2.8, wave
U.S. degree is 39.Plasticizer is white clay.
(1) 45# ferrosilicon, electrolytic manganese metal, crome metal are respectively placed in heat-resisting steel disk by ferroalloy passivation, and accumulation is thick
Degree is 40mm, is stirred 5 times when roasting.The technological parameter of roasting are as follows: 45# ferrosilicon is 800 DEG C, keeps the temperature 1 hour, furnace cooling；Electricity
Solving manganese metal is 320 DEG C, keeps the temperature 1 hour, furnace cooling；Crome metal is 580 DEG C, keeps the temperature 1 hour, furnace cooling.Other iron close
Gold is used without processing, supply of material state.
(2) according to the formula of cermet powder agglomates, first the lesser titanium dioxide of specific gravity, graphite are weighed by formula rate
After mix, with existing mixed powder machine dry-mixed 15 minutes, obtain non-alloyed mixed powder；Then electrolytic metal step (1) being passivated
Manganese, 45# ferrosilicon, crome metal and the ferrotianium without passivation, ferro-boron, vanadium iron, molybdenum powder, metal nickel powder, iron powder, nano silicon carbide titanium valve,
The deoxidizing alloys such as oxidation yttrium powder are added in non-alloyed mixed powder after weighing by formula rate, are further continued for mixed powder 15 minutes, are obtained
Obtain dry-mixed powder.
Then alloy powder block formula is pressed, waterglass bonding agent is added in dry-mixed powder, wet-mixing is uniformly mixed, and obtains wet feed.
It is determining for 10mm according to the radius that the cross sectional shape and size that alloy powder block designs changes the hydraulic powder coating machine of welding rod
Then diameter mould suppresses alloy powder block according to conventional welding rod producting rule, in pressing process, close sending for the hydraulic powder coating machine of welding rod
Silk system, is not sent into welding wire.As needed before baking by the alloy powder block of extrusion, longitudinal length 200mm is intercepted as needed.
By the above-mentioned alloy powder block suppressed 20 DEG C of low temperature drying 24 hours at room temperature, 180 DEG C, heat preservation 45 are then carried out
Minute drying, go after moisture removal alloy powder block finished product.
The alloy powder block produced according to the above method is placed in Q345 surface of steel plate, the gap between powder agglomates is 1mm, then
It is electric arc deposited with TIG, technological parameter are as follows: electric current 350A, voltage 20V, argon flow 25L/min, cooling water flow are
20L/min.Gap location of the arcing between alloy powder block, under the action of arc heat, base material position melts to be formed quickly
Molten bath, the gap of the liquid metal filling alloy powder block in molten bath, improves the capacity of heat transmission of powder agglomates, accelerates powder agglomates fusing.It is molten
Pond swings laterally electric arc after being formed, and the speed of horizontal swing is determined by the burn-off rate of alloy powder block, acts on electric arc always
On the interface of alloy powder block and liquid metal.By the continuous expansion in molten bath, alloy powder block is all melted, final solidified shape
At overlay cladding.Experiments have shown that overlay cladding does not have crackle, molding is good, and 20 DEG C of hardness average values of deposited metal room temperature are HRC66,
600 DEG C of hardness average values are HV613.
Embodiment 3:
The formula of cermet powder agglomates is calculated as with mass parts, bonding agent 5, electrolytic manganese metal 6,45# ferrosilicon 5, titanium
Iron 3, crome metal 8, ferro-boron 30, vanadium iron 5, molybdenum powder 42, metal nickel powder 4, iron powder 6, nano silicon carbide titanium valve 3 aoxidize yttrium powder 3.Nanometer
The granularity of carbonized titanium powder is 99% or more less than 40 nanometers, and the granularity of other powder is 75 microns~180 microns (i.e. granularities
For -80 mesh~+200 mesh).
Binder is sodium silicate, modulus 2.9, Baume degrees 45.
(1) 45# ferrosilicon, electrolytic manganese metal, crome metal are respectively placed in heat-resisting steel disk by ferroalloy passivation, and accumulation is thick
Degree is 35mm, is stirred 4 times when roasting.The technological parameter of roasting are as follows: 45# ferrosilicon is 750 DEG C, keeps the temperature 1 hour, furnace cooling；Electricity
Solving manganese metal is 300 DEG C, keeps the temperature 1 hour, furnace cooling；Crome metal is 560 DEG C, keeps the temperature 1 hour, furnace cooling.Other iron close
Gold is used without processing, supply of material state.
(2) according to the formula of cermet powder agglomates, first the lesser titanium dioxide of specific gravity, graphite are weighed by formula rate
After mix, with existing mixed powder machine dry-mixed 12 minutes, obtain non-alloyed mixed powder；Then electrolytic metal step (1) being passivated
Manganese, 45# ferrosilicon, crome metal and the ferrotianium without passivation, ferro-boron, vanadium iron, molybdenum powder, metal nickel powder, iron powder, nano silicon carbide titanium valve,
The deoxidizing alloys such as oxidation yttrium powder are added in non-alloyed mixed powder after weighing by formula rate, are further continued for mixed powder 10 minutes, are obtained
Obtain dry-mixed powder.
Then alloy powder block formula is pressed, waterglass bonding agent is added in dry-mixed powder, wet-mixing is uniformly mixed, and obtains wet feed.
Using the common stamper mould of powder metallurgy, the type chamber of the mold is radius 8mm, and cross section is semicircle, length
For 100mm, wherein by above-mentioned wet feed filling, pressure to the alloy powder block for applying 50MPa is formed.
At 50 °C, after molding alloy powder block being dried 24 hours, then 40 points of heat preservation drying at a temperature of 160 DEG C
After moisture completely removes, alloy powder block finished product is made in clock.
The alloy powder block produced according to the above method is placed in Q345 surface of steel plate, the gap between powder agglomates is 1mm, then
With carbon arc deposition, technological parameter are as follows: carbon-point diameter 4mm, length 355mm, electric current 150A.Arcing in alloy powder block it
Between gap location, under the action of arc heat, base material position is melted quickly forms molten bath, and the liquid metal in molten bath fills alloyed powder
The gap of block improves the capacity of heat transmission of powder agglomates, accelerates powder agglomates fusing.Molten bath swings laterally electric arc after being formed, and laterally puts
Dynamic speed is determined by the burn-off rate of alloy powder block, acts on electric arc always on the interface of alloy powder block and liquid metal.
By the continuous expansion in molten bath, alloy powder block is all melted, final solidified formation overlay cladding.Experiments have shown that overlay cladding does not have
Crackle, molding is good, and 20 DEG C of hardness average values of deposited metal room temperature are HRC62, and 600 DEG C of hardness average values are HV571.
Embodiment 4: the formula of cermet powder agglomates is calculated as with mass parts, bonding agent 5, electrolytic manganese metal 4,45#
Ferrosilicon 2, ferrotianium 4, crome metal 10, ferro-boron 35, graphite 3, vanadium iron 6, molybdenum powder 48, metal nickel powder 3, iron powder 8, nano silicon carbide titanium valve 4,
Aoxidize yttrium powder 4.The granularity of nano silicon carbide titanium valve is 99% or more less than 40 nanometers, the granularities of other powder is 75 microns~
180 microns (i.e. granularity is -80 mesh~+200 mesh).
Binder is potassium sodium mixing waterglass, and the mass fraction of potassium is 3, and the mass fraction of sodium is 1, modulus 3.0, wave
U.S. degree is 46.
(1) 45# ferrosilicon, electrolytic manganese metal, crome metal are respectively placed in heat-resisting steel disk by ferroalloy passivation, and accumulation is thick
Degree is 30mm, is stirred 3 times when roasting.The technological parameter of roasting are as follows: 45# ferrosilicon is 700 DEG C, keeps the temperature 1 hour, furnace cooling；Electricity
Solving manganese metal is 280 DEG C, keeps the temperature 1 hour, furnace cooling；Crome metal is 550 DEG C, keeps the temperature 1 hour, furnace cooling.Other iron close
Gold is used without processing, supply of material state.
(2) according to the formula of cermet powder agglomates, first the lesser titanium dioxide of specific gravity, graphite are weighed by formula rate
After mix, with existing mixed powder machine dry-mixed 10 minutes, obtain non-alloyed mixed powder；Then electrolytic metal step (1) being passivated
Manganese, 45# ferrosilicon, crome metal and the ferrotianium without passivation, ferro-boron, vanadium iron, molybdenum powder, metal nickel powder, iron powder, nano silicon carbide titanium valve,
The deoxidizing alloys such as oxidation yttrium powder are added in non-alloyed mixed powder after weighing by formula rate, are further continued for mixed powder 8 minutes, are obtained
Dry-mixed powder.
Then alloy powder block formula is pressed, waterglass bonding agent is added in dry-mixed powder, wet-mixing is uniformly mixed, and obtains wet feed.
Using the common stamper mould of powder metallurgy, the type chamber of the mold is radius 8mm, and cross section is semicircle, length
For 100mm, wherein by above-mentioned wet feed filling, pressure to the alloy powder block for applying 50MPa is formed.
At a temperature of 20 DEG C, after molding alloy powder block is dried 48 hours, then 50 points of heat preservation drying at a temperature of 180 DEG C
After moisture completely removes, alloy powder block finished product is made in clock.
The alloy powder block produced according to the above method is placed in Q345 surface of steel plate, the gap between powder agglomates is 1mm, then
With carbon arc deposition, technological parameter are as follows: carbon-point diameter 4mm, length 355mm, electric current 150A.Arcing in alloy powder block it
Between gap location, under the action of arc heat, base material position is melted quickly forms molten bath, and the liquid metal in molten bath fills alloyed powder
The gap of block improves the capacity of heat transmission of powder agglomates, accelerates powder agglomates fusing.Molten bath swings laterally electric arc after being formed, and laterally puts
Dynamic speed is determined by the burn-off rate of alloy powder block, acts on electric arc always on the interface of alloy powder block and liquid metal.
By the continuous expansion in molten bath, alloy powder block is all melted, final solidified formation overlay cladding.Experiments have shown that overlay cladding does not have
Crackle, molding is good, and 20 DEG C of hardness average values of deposited metal room temperature are HRC67, and 600 DEG C of hardness average values are HV632.
Comparative example 1
Preparation method is same as Example 1, the difference is that, without nano silicon carbide titanium valve, comparative example 1 deposition gold in formula
Category 20 DEG C of hardness average values of room temperature are HRC61, and 600 DEG C of hardness average values are HV608.The thermal fatigue of deposited metal is surveyed
Examination, specimen size open 60 ° of v-notch in the center vertical thickness direction on the one side 20mm for 50 × 20 × 1.5 (mm), carry out
700 DEG C -20 DEG C of circulating-heating, cooling reflect fatigue behaviour with the cycle-index for 0.5mm crackle occur.Without nano silicon carbide
The cycle-index of the comparative example 1 of titanium valve is 34 times, and the cycle-index for the embodiment 1 that 4 parts of titanium valve containing nano silicon carbide is 56 times.Pass through
With the comparison of embodiment 1, show that nano silicon carbide titanium valve of the present invention can effectively promote the anti-fatigue performance of deposited metal.
Comparative example 2
Preparation method is same as Example 1, the difference is that, non-oxidation yttrium in formula, 2 deposited metal room temperature of comparative example
20 DEG C of hardness average values are HRC59, and 600 DEG C of hardness average values are HV563.The thermal fatigue of deposited metal is tested, is tried
Sample opens 60 ° of v-notch, 700 DEG C of progress-in the center vertical thickness direction on the one side 20mm having a size of 50 × 20 × 1.5 (mm)
20 DEG C of circulating-heating, cooling reflect fatigue behaviour with the cycle-index for 0.5mm crackle occur.Pair without yttrium oxide powder
The cycle-index of ratio 1 is 41 times, and the cycle-index containing 2 parts of yttrium oxide of embodiments 1 is 67 times.By and embodiment 2 ratio
It is right, show that yttrium oxide of the present invention can effectively promote the anti-fatigue performance of deposited metal.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (3)
1. a kind of built-up welding ternary boride cement Mo2FeB2Alloy powder, which is characterized in that by the original of following parts by weight
Material composition: 20~38 parts of ferro-boron, 32~50 parts of molybdenum powder, 7~24 parts of iron powder, 2~4 parts of nano silicon carbide titanium valve, oxidation yttrium powder 2~4
Part, 2-6 parts of 45# ferrosilicon, 1-4 parts of ferrotianium, 2-6 parts of vanadium iron, 4~8 parts of electrolytic manganese metal, 5~10 parts of crome metal, graphite 0.01~
3 parts, 3~6 parts of metal nickel powder；
5~15 parts of binder, 0~8 part of plasticizer；The binder is waterglass, and the plasticizer is titanium dioxide and/or cloud
It is female；
The built-up welding is carbon arc, tungsten electrode arc, plasma-arc, the welding rod arc of consumable electrode or gas metal-arc welding electricity
Arc deposition；
The ingredient of titanium dioxide TiO by percentage to the quality2Content is not less than 98%；The ingredient of mica SiO by percentage to the quality2
Content is 43%-50%, Al2O3Content is 20%-35%, K2O+Na2O content is 7%-11%, K2O content is not less than 6%；Electricity
Mn content is not less than 99.5% to the ingredient of solution manganese metal by quality ratio；The ingredient of 45# ferrosilicon is 40.0% by quality ratio~
47.0%Si, 0.1%C, Yu Wei Fe and the impurity for not influencing performance；The ingredient of ferrotianium is 35%~45%Ti by quality ratio,
Al is no more than 9.0%, Si and is no more than 2.5%, Yu Wei Fe no more than 3.5%, Mn and does not influence the impurity of performance；Crome metal at
Cr content is not less than 98% point by quality ratio；B content is 19-21% to the ingredient of ferro-boron by quality ratio, C content is no more than
0.1%, Si content is no more than 4.0%, Al content and is no more than no more than 3.0%, S content no more than 0.01%, P content
0.03%；The ingredient of graphite is 94%~99%C by quality ratio；The ingredient of vanadium iron is 75%-85%V by quality ratio, and C is not
It is no more than 1.5%, Yu Wei Fe no more than 2%, Al more than 0.06%, Si and does not influence the impurity of performance；The ingredient of molybdenum powder is with matter
Amount is not less than 99.8% than meter Mo content；Ni content is not less than 98% to the ingredient of metal nickel powder by quality ratio；Aoxidize yttrium powder
Ingredient Y by percentage to the quality2O3Content is not less than 99%；Iron powder is atomized iron powder, and Fe content is not less than by quality ratio
99.9%；TiC content is not less than 99.9% to the ingredient of nano silicon carbide titanium valve by percentage to the quality, and 99% or more granularity is less than
40 nanometers；Other powder sizes in addition to nano silicon carbide titanium valve are 75 microns~180 microns, allow to contain in the ingredient of the powder
There is the impurity for not influencing its performance for being difficult to remove in process.
2. a kind of built-up welding ternary boride cement Mo2FeB2The preparation method of alloy powder characterized by comprising
A. processing is passivated to 45# ferrosilicon, electrolytic manganese metal, crome metal；
B. nonmetallic raw material powder, raw metal powder are premixed respectively, according still further to alloy powder described in claim 1
Raw material composition ratio be blended, obtain dry-mixed powder, be added binder into dry-mixed powder, molding or it is hydraulic to get.
3. built-up welding according to claim 1 ternary boride cement Mo2FeB2Alloy powder, which is characterized in that institute
Alloy powder is stated for manufacturing surfacing welding, flux-cored wire, alloyed steel strip, alloy powder block.
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| CN108690946A (en) * | 2018-06-15 | 2018-10-23 | 武汉科技大学 | A kind of surfacing dusty material and its preparation method and application |
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| CN101058129A (en) * | 2007-05-23 | 2007-10-24 | 山东大学 | Sandwiched alloy powder block used for built-up welding and its preparation method and application |
| CN105033507A (en) * | 2015-09-22 | 2015-11-11 | 山东大学 | Special-purpose welding rod for built-up welding of hot work die restoration |
| CN108690946A (en) * | 2018-06-15 | 2018-10-23 | 武汉科技大学 | A kind of surfacing dusty material and its preparation method and application |
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| CN111230358B (en) * | 2020-03-11 | 2021-02-02 | 山东大学 | Boride and carbide composite reinforced impact-resistant surfacing wear-resistant alloy powder block and preparation and application thereof |
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| CN109112381A (en) | 2019-01-01 |
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