CN103894599B - A kind of Ni based powder metallurgy repair materials and application thereof - Google Patents
A kind of Ni based powder metallurgy repair materials and application thereof Download PDFInfo
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Abstract
The invention belongs to nickel-base alloy recovery technique field, disclose a kind of repair materials and restorative procedure of nickel-base alloy product.Repair materials of the present invention is a kind of " paste " plasticity body of powder; By mass percentage, by 65 ~ 80% Co-based alloy powders, 15 ~ 25% active auxiliary Co-based alloy powder and 5 ~ 10% plasticizing forming agent compositions.By repair materials being coated on surface or the damage zone of matrix, and degreasing being carried out to it, adopting microcell liquid phase sintering technology to sinter alloy to be repaired subsequently, finally the material after sintering being repaired.Plasticizing forming agent improves mouldability and the plasticity of Ni based powder metallurgy repair materials, district's even tissue repaired by alloy after reparation, this restorative procedure overcomes fire check that melting welding exists effectively and soldering can not repair the deficiency of wide arc gap defect, can the complicated defect damage of repairing nickel-based alloy large scale, thus greatly improve the application of powder metallurgy recovery technique in nickel-base alloy part restore.
Description
Technical field
The invention belongs to nickel-base alloy recovery technique field, particularly a kind of Ni based powder metallurgy repair materials and application thereof.
Background technology
Nickel-base alloy is can a metalloid material of long-term work under high temperature more than 600 DEG C and certain effect of stress, there is higher creep rupture strength and creep strength, excellent anti-oxidant and heat resistanceheat resistant corruption candle performance, good plasticity, fatigue behaviour, fracture toughness etc.Become the important meals material in the field such as Aeronautics and Astronautics, naval vessels gas engine at present, be widely used in fields such as high temeperature chemistry, atomic energy industry and ground turbines simultaneously.But nickel-base alloy part time job environment is usually comparatively severe, often because the effects such as long term high temperature, high pressure and corrosive gas cause nickel-base alloy part to produce the inefficacies such as burn into wearing and tearing and crackle in application process, cause a large amount of nickel-base alloy part rejection.In order to extend nickel-base alloy part service life, reducing its manufacturing cost, improving functional reliability and the economy of part, advanced recovery technique is subject to the attention of researcher day by day, and obtains a wide range of applications.
The method realizing nickel-base alloy part restore at present is mainly divided into melting welding reparation and soldering to repair two classes.Melting welding is Application comparison class methods widely, and the general heat source temperature of these class methods is high, and heat is concentrated, and can recover intensity and the mechanical property of workpiece.Argon arc welding, plasma arc welding, Laser Welding, micro-arc spark weldering etc. all belong to this type of, and wherein applying maximum is Laser Welding.Laser Welding has that heat input is low, heat affected area is narrow, post welding distortion is little, be suitable for welding infusibility and the strong metal of heat sensitivity.(the application laser such as Li Xiaoli, 2002,22(3)) in it publishes thesis " the laser melting coating research of high temperature alloy K403 ", adopt laser cladding method repairing nickel-based alloy K403, result of study shows that laser melting coating can realize reparation and the strengthening of nickel-base alloy on high-temperature nickel-base alloy matrix.Soldering reparation is because belonging to overall heating, and heating-up temperature is low, and part deformation is little, can overcome the deficiency that welding process local heat easily causes uneven thermal contraction.Pan Hui equals the 7th volume supplementary issue " material science and technique " to publish thesis in 1999 in " Study on repair brazing of turbojet vane " and adopts soldering to repair high temperature alloy, result of study shows that the blade repaired has good combination property, have passed the 100h test run of turbojet ground.
But above-mentioned restorative procedure still also exists many problems at present, melting welding repair in melting welding time and melting welding after nickel-base alloy weld seam or heat affected area often along with the generation of fire check, make to be welding in nickel-base alloy part restore and be very restricted, the reparation district performance that soldering obtains then differs larger with matrix, and obviously on the weak side in conjunction with relative melting welding with matrix, be not suitable for large volume reparation, its application in nickel-base alloy also receives obvious restriction.The REPAIR WELDING material applied in melting welding reparation and soldering reparation is mainly block materials and dusty material, is difficult to fill complicated large scale 3 D defects position, thus limits and can repair object range.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art with not enough, primary and foremost purpose of the present invention is to provide a kind of Ni based powder metallurgy repair materials.
Another object of the present invention is the application providing above-mentioned Ni based powder metallurgy repair materials.
Object of the present invention is achieved through the following technical solutions:
A kind of Ni based powder metallurgy repair materials, is made up of following component by mass percentage:
Co-based alloy powder 65 ~ 80%
Active auxiliary Co-based alloy powder 15 ~ 25%
Plasticizing forming agent 5 ~ 10%.
Described Co-based alloy powder composition is: by mass percentage, Ni55.08 ~ 67.85%, Cr13.58 ~ 15.67%, Co6.13 ~ 8.45%, W2.06 ~ 3.58%, Mo3.45 ~ 5.55%, Al2.45 ~ 4.25%, Ti3.16 ~ 5.25%, Nb1.10 ~ 1.90%, Y0.01 ~ 0.05%, C0.03 ~ 0.08%, B0.04 ~ 0.09%, Hf0.05 ~ 0.14%, all the other are trace impurity.
Described activity assists Co-based alloy powder composition to be: by mass percentage, Ni52.51 ~ 60.49%, Co16.35 ~ 22.45%, Cr6.48 ~ 8.37%, Al3.62 ~ 6.45%, B2.21 ~ 3.67%, Zr7.50 ~ 9.90%, all the other are trace impurity.
Described Co-based alloy powder and activity assist Co-based alloy powder to be adopt atomization preparation and obtain.
Described plasticizing forming agent is made up of epoxy resin and curing agent, and wherein by mass percentage, epoxy resin content is 40 ~ 50%, and all the other are curing agent.
Described epoxy resin is 6101 type epoxy resin; Described curing agent is EP curing agent.
Described Ni based powder metallurgy repair materials is that Co-based alloy powder, active auxiliary Co-based alloy powder and plasticizing forming agent are mixed gained, and gained Ni based powder metallurgy repair materials is " paste " plasticity body of powder.
The application of described Ni based powder metallurgy repair materials in repairing nickel-based alloy material.
Described application, comprises the steps:
Step one: the pretreatment of nickel-bass alloy material to be repaired
Adopt mechanical means to remove rust staining, the impurity of nickel-bass alloy material to be repaired surface and rejected region, then clean up for subsequent use;
Step 2: the preparation of Ni based powder metallurgy repair materials and coating
Co-based alloy powder, active auxiliary Co-based alloy powder and plasticizing forming agent is added successively in container, mix, obtain Ni based powder metallurgy repair materials, then Ni based powder metallurgy repair materials is coated in surface and the rejected region of nickel-bass alloy material to be repaired cleaned in step one;
Step 3: the powder metallurgy reparation of nickel-bass alloy material to be repaired
The nickel-bass alloy material scribbling repair materials in step 2 is put into hot pressing furnace, heats up with the heating rate of 5 ~ 10 DEG C/min, at 400 ~ 600 DEG C, vacuum is≤10
-2carry out ungrease treatment to nickel-bass alloy material under the condition of Pa, degreasing temperature retention time is 30 ~ 40min; Continue subsequently to heat up, heating rate is 15 ~ 25 DEG C/min, and at 1150 ~ 1250 DEG C, vacuum is≤10
-2carry out sintering reparation to nickel-bass alloy material after degreasing under the condition of Pa, the temperature retention time of sintering is 240 ~ 330min, then with stove cooling, must sinter nickel-bass alloy material after repairing;
Step 4: after repairing sintering, mechanical grinding processing is carried out at the reparation position of nickel-bass alloy material, makes the molding surface size at reparation position revert to preprosthetic molding surface size.
Mechanical means described in step one is the method adopting sand papering, and described cleaning fluid is ethanolic solution (volume fraction of ethanol is 95%).
Hot pressing furnace described in step 3 is vacuum hotpressing stove.
Compared with prior art, the present invention has the following advantages and beneficial effect:
(1) the Ni based powder metallurgy repair materials that prepared by the present invention is the plasticity body of powder adopting plasticizing forming agent to be processed into " paste ".Mainly to comprise as main body and the activity having the Co-based alloy powder of higher melt, fusing point relatively low assists Co-based alloy powder and plasticizing forming agent.Adding of main body Co-based alloy powder is to ensure good anti-oxidant, corrosion resistance, elevated temperature strength and croop property.The object adding active auxiliary Co-based alloy powder reduces sintering to repair temperature, realizes higher sintering bonding strength by the element phase counterdiffusion in sintering process between powder with matrix simultaneously.Plasticizing forming agent process Co-based alloy powder can prevent the Component seperation caused due to the difference of proportion between alloy powder, thus make Co-based alloy powder mix evenly, greatly can also improve mouldability and the plasticity of Ni based powder metallurgy repair materials, expand the application of Ni based powder metallurgy repair materials.
(2) the plasticizing forming agent that the present invention adopts is 6101 liquid type epoxy resin and the EP curing agent with an amino functional group under room temperature.Chemical reaction is there is not between this plasticizing forming agent and dusty material, but good with powder wetability, and each constituent element of powder plasticiser answers partial chemical to dissolve each other, and is not separated; Secondly, each constituent element raw material of powder plasticiser easily obtains, cheaply, and normal temperature plasticity is good, and pyrolysis temperature range is wide, and its catabolite non-corrosiveness, nontoxic, residual quantity is low.
(3) the Ni based powder metallurgy repair materials of the present invention's proposition and the application in repairing nickel-based alloy material thereof, have employed plasticity body of powder and powder metallurgy microcell liquid phase sintering technology realizes damage zone Remodeling.By the vacuum sintering technology under lower temperature, can repairing nickel-based alloy part defect, repair district and form good metallurgical binding with matrix, reparation district's even tissue and not obvious impact are repaired the structure and properties of nickel-base alloy.Repairing district's microhardness mean value is 405HV, close with the microhardness of common Ni-based high temperature alloy material.
(4) compared with traditional preparation methods, adopt Ni based powder metallurgy repair materials and the application in repairing nickel-based alloy material thereof effectively to overcome fire check that melting welding exists and soldering can not repair the deficiency of wide arc gap defect, can the complicated defect damage of repairing nickel-based alloy large scale, thus greatly improve the application of powder metallurgy recovery technique in nickel-base alloy part restore.
Accompanying drawing explanation
Fig. 1 is the SEM photo of nickel-bass alloy material after repairing in example 2, and wherein (a) is the SEM photo of nickel-bass alloy material 100 times after repairing, and (b) is the SEM photo that after repairing, nickel-bass alloy material repairs 1000 times, district;
Fig. 2 is the SEM photo that example 5 repairs rear nickel-bass alloy material, and wherein (a) is the SEM photo of nickel-bass alloy material 28 times after repairing, and (b) is the SEM photo in nickel-bass alloy material reparation 1000 times, district.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described, but embodiments of the present invention are not limited only to this.
Embodiment 1
Ni based powder metallurgy restorative procedure comprises the steps and process conditions:
Step one: the pretreatment of matrix material to be repaired and the preparation of powder metallurgy repair materials
Adopt mechanical means to remove rust staining, the impurity of nickel-bass alloy material to be repaired (matrix material) surface and rejected region, then adopt ethanolic solution (volume fraction of ethanol is 95%) to clean up for subsequent use; Powder metallurgy repair materials: the mass percent of each composition of main body Co-based alloy powder is Ni55.08%, Cr15.67%, Co8.45%, W3.58%, Mo5.55%, Al4.25%, Ti5.25%, Nb1.90%, Y0.01%, C0.08%, B0.04%, Hf0.14%, and all the other are inevitable trace impurity; The mass percent of the active auxiliary each composition of Co-based alloy powder is Ni52.51%, Co22.45%, Cr6.48%, Al6.45%, B2.21%, Zr9.90%, and all the other are inevitable trace impurity; The mass percent of plasticizing forming agent epoxy resin (6101 type epoxy resin) accounts for 40%, and the mass percent of curing agent EP is 60%;
Step 2: the preparation of powder metallurgy repair materials and coating
Be 80%, 15% and 5% carry out proportioning according to mass percent respectively using above-mentioned Co-based alloy powder (as main body and there is higher melt), active auxiliary Co-based alloy powder (fusing point is relatively low) and plasticizing forming agent, mix, form high plasticity " paste " repair materials (powder metallurgy repair materials), then " paste " repair materials is coated in surface and the rejected region of above-mentioned cleaned nickel-bass alloy material to be repaired;
Step 3: powder metallurgy reparation is carried out to above-mentioned nickel-bass alloy material to be repaired
The nickel-bass alloy material scribbling repair materials is put into vacuum hotpressing stove intensification and carry out ungrease treatment, heat up subsequently and carry out sintering reparation, concrete renovation technique condition is as follows:
In the degreasing stage: heating rate is 5 DEG C/min, skimming temp is 400 DEG C, and vacuum is≤10
-2pa, degreasing temperature retention time is 40min;
In the sintering stage: heating rate is 15 DEG C/min, sintering temperature is 1150 DEG C, and vacuum is≤10
-2pa, the sintered heat insulating time is 330min;
Step 4: mechanical grinding processing is carried out to the reparation position with stove cooling nickel-bass alloy material, makes the molding surface size at reparation position revert to preprosthetic molding surface size.
In this example, repair between district and nickel-bass alloy material and form good metallurgical binding, repair district's microstructure flawless, even tissue, Main Tissues is γ phase.The microhardness mean value repairing district is 395HV.(repair district's microhardness to measure on HVS-1000 microhardness testers, load is 500g, and the dwell time is 20s, lower same).
Embodiment 2
Ni based powder metallurgy restorative procedure comprises the steps and process conditions:
Step one: the pretreatment of matrix material to be repaired and the preparation of powder metallurgy repair materials
Adopt mechanical means to remove rust staining, the impurity of nickel-bass alloy material to be repaired (matrix material) surface and rejected region, then adopt ethanolic solution (volume fraction of ethanol is 95%) to clean up for subsequent use; Powder metallurgy repair materials: in main body Co-based alloy powder, the mass percent of each composition is Ni67.85%, Cr13.58%, Co6.13%, W2.06%, Mo3.45%, Al2.45%, Ti3.16%, Nb1.10%, Y0.05%, C0.03%, B0.09%, Hf0.05%, all the other are inevitable trace impurity; In active auxiliary Co-based alloy powder, the mass percent of each composition is Ni60.49%, Co16.35%, Cr8.37%, Al3.62%, B3.67%, Zr7.50%, and all the other are inevitable trace impurity; The mass percent of plasticizing forming agent epoxy resin (6101 type epoxy resin) accounts for 40%, and the mass percent of curing agent EP is 60%;
Step 2: the preparation of powder metallurgy repair materials and coating
Be 75%, 20% and 5% carry out proportioning according to mass percent respectively using above-mentioned Co-based alloy powder (as main body and there is higher melt), active auxiliary Co-based alloy powder (fusing point is relatively low) and plasticizing forming agent, mix, form high plasticity " paste " repair materials (powder metallurgy repair materials), then " paste " repair materials is coated in surface and the rejected region of above-mentioned cleaned nickel-bass alloy material to be repaired;
Step 3: powder metallurgy reparation is carried out to above-mentioned nickel-bass alloy material to be repaired
The nickel-bass alloy material scribbling repair materials is put into vacuum hotpressing stove intensification and carry out ungrease treatment, heat up subsequently and carry out sintering reparation, concrete renovation technique condition is as follows:
In the degreasing stage: heating rate is 10 DEG C/min, skimming temp is 600 DEG C, and degreasing temperature retention time is 30min, and vacuum is≤10
-2pa;
In the sintering stage: heating rate is 25 DEG C/min, sintering temperature is 1250 DEG C, and the sintered heat insulating time is 240min, and vacuum is≤10
-2pa;
Step 4 is identical with embodiment 1.
After nickel-base alloy is repaired, repair the structure in district as shown in Figure 1.Fig. 1 is the SEM photo of nickel-bass alloy material after repairing, and wherein Fig. 1 (a) is the SEM photo of 100 times, and Fig. 1 (b) is the SEM photo of 1000 times.A () the right is for repairing district, the left side is nickel-bass alloy material (matrix), can find out, repairs between district and matrix and forms good metallurgical binding.B (), for repairing district's microstructure, flawless, even tissue, Main Tissues is γ phase, identical with nickel-bass alloy material (matrix).The microhardness mean value repairing district is 412HV.
Embodiment 3
Ni based powder metallurgy restorative procedure comprises the steps and process conditions:
Step one: the preparation of matrix material to be repaired and powder metallurgy repair materials
Adopt mechanical means to remove rust staining, the impurity of nickel-bass alloy material to be repaired surface and rejected region, then it is for subsequent use to adopt ethanolic solution to clean up; Powder metallurgy repair materials: in main body Co-based alloy powder, the mass percent of each composition is Ni67.85%, Cr13.58%, Co6.13%, W2.06%, Mo3.45%, Al2.45%, Ti3.16%, Nb1.10%, Y0.05%, C0.03%, B0.09%, Hf0.05%, all the other are inevitable trace impurity; In active auxiliary Co-based alloy powder, the mass percent of each composition is Ni52.51%, Co22.45%, Cr6.48%, Al6.45%, B2.21%, Zr9.90%, and all the other are inevitable trace impurity; The mass percent of plasticizing forming agent epoxy resin (6101 type epoxy resin) is 50%, and curing agent EP mass percent is 50%;
Step 2: the preparation of powder metallurgy repair materials and coating
Be 65%, 25% and 10% carry out proportioning according to mass percent respectively using above-mentioned Co-based alloy powder (as main body and there is higher melt), active auxiliary Co-based alloy powder (fusing point is relatively low) and plasticizing forming agent, mix, form high plasticity " paste " repair materials (powder metallurgy repair materials), then " paste " repair materials is coated in surface and the rejected region of above-mentioned cleaned nickel-bass alloy material to be repaired;
Step 3: powder metallurgy reparation is carried out to above-mentioned nickel-bass alloy material to be repaired
The nickel-bass alloy material scribbling repair materials is put into vacuum hotpressing stove intensification and carry out ungrease treatment, continue intensification subsequently and carry out sintering reparation, concrete renovation technique condition is as follows:
In the degreasing stage: heating rate is 10 DEG C/min, skimming temp is 500 DEG C, and degreasing temperature retention time is 40min, and vacuum is≤10
-2pa;
In the sintering stage: heating rate is 25 DEG C/min, sintering temperature is 1200 DEG C, and the sintered heat insulating time is 240min, and vacuum is≤10
-2pa;
Step 4 is identical with embodiment 1.
In this example, repair between district and matrix and form good metallurgical binding, repair district's microstructure flawless, even tissue, Main Tissues is γ phase.The microhardness mean value repairing district is 393HV.
Embodiment 4
Ni based powder metallurgy restorative procedure comprises the steps and process conditions:
Step one: the preparation of matrix material to be repaired and powder metallurgy repair materials
Adopt mechanical means to remove rust staining, the impurity of nickel-bass alloy material to be repaired surface and rejected region, then adopt ethanolic solution (volume fraction of ethanol is 95%) to clean up for subsequent use; Powder metallurgy repair materials: the mass percent (Ni55.08%, Cr15.67%, Co8.45%, W3.58%, Mo5.55%, Al4.25%, Ti5.25%, Nb1.90%, Y0.01%, C0.08%, B0.04%, Hf0.14%, all the other are inevitable trace impurity) of each composition in main body Co-based alloy powder; In active auxiliary Co-based alloy powder each composition mass percent (Ni60.49%, Co16.35%, Cr8.37%, Al3.62%, B3.67%, Zr7.50%, all the other are inevitable trace impurity; The mass percent of plasticizing forming agent epoxy resin (6101 type epoxy resin) is 50%, and curing agent EP mass percent is 50%;
Step 2: the preparation of powder metallurgy repair materials and coating
Be 70%, 20% and 10% carry out proportioning according to mass percent respectively using above-mentioned Co-based alloy powder (as main body and there is higher melt), active auxiliary Co-based alloy powder (fusing point is relatively low) and plasticizing forming agent, mix, form high plasticity " paste " repair materials (powder metallurgy repair materials), then " paste " repair materials is coated in surface and the rejected region of above-mentioned cleaned nickel-bass alloy material to be repaired;
Step 3: powder metallurgy reparation is carried out to above-mentioned nickel-bass alloy material to be repaired
The nickel-bass alloy material scribbling repair materials is put into vacuum hotpressing stove intensification and carry out ungrease treatment, heat up subsequently and carry out sintering reparation, concrete renovation technique condition is as follows:
In the degreasing stage: heating rate is 10 DEG C/min, skimming temp is 550 DEG C, and degreasing temperature retention time is 40min, and vacuum is≤10
-2pa;
In the sintering stage: heating rate is 25 DEG C/min, sintering temperature is 1180 DEG C, and the sintered heat insulating time is 300min, and vacuum is≤10
-2pa;
Step 4 is identical with embodiment 1.
In this example, repair between district and matrix and form good metallurgical binding, repair district's microstructure flawless, even tissue, Main Tissues is γ phase.The microhardness mean value repairing district is 406HV.
Embodiment 5
Ni based powder metallurgy restorative procedure comprises the steps and process conditions:
Step one: the preparation of matrix material to be repaired and powder metallurgy repair materials
Adopt mechanical means to remove rust staining, the impurity of nickel-bass alloy material to be repaired surface and rejected region, then adopt ethanolic solution (volume fraction of ethanol is 95%) to clean up for subsequent use; Powder metallurgy repair materials: in main body Co-based alloy powder, the mass percent of each composition is Ni61.16%, Cr14.50%, Co7.50%, W2.90%, Mo4.25%, Al3.85%, Ti4.10%, Nb1.50%, Y0.03%, C0.05%, B0.06%, Hf0.10%, all the other are inevitable trace impurity; In active auxiliary Co-based alloy powder, the mass percent of each composition is Ni58.00%, Co18.50%, Cr7.80%, Al4.20%, B3.00%, Zr8.50%, and all the other are inevitable trace impurity; The mass percent of plasticizing forming agent epoxy resin (6101 type epoxy resin) is 50%, and curing agent EP mass percent is 50%;
Step 2: the preparation of powder metallurgy repair materials and coating
Be 76%, 19% and 5% carry out proportioning according to mass percent respectively using above-mentioned Co-based alloy powder (as main body and there is higher melt), active auxiliary Co-based alloy powder (fusing point is relatively low) and plasticizing forming agent, mix, form high plasticity " paste " repair materials (powder metallurgy repair materials), then " paste " repair materials is coated in surface and the rejected region of above-mentioned cleaned nickel-bass alloy material to be repaired;
Step 3: powder metallurgy reparation is carried out to above-mentioned nickel-bass alloy material to be repaired
The nickel-bass alloy material scribbling repair materials is put into vacuum hotpressing stove intensification and carry out ungrease treatment, heat up subsequently and carry out sintering reparation, concrete renovation technique condition is as follows:
In the degreasing stage: heating rate is 5 DEG C/min, skimming temp is 550 DEG C, and degreasing temperature retention time is 40min, and vacuum is≤10
-2pa;
In the sintering stage: heating rate is 25 DEG C/min, sintering temperature is 1220 DEG C, and the sintered heat insulating time is 240min, and vacuum is≤10
-2pa;
Step 4 is identical with embodiment 1.
After nickel-base alloy is repaired, repair the structure in district as shown in Figure 2.Fig. 2 is the SEM photo of nickel-bass alloy material after repairing, and wherein, (a) is the SEM photo of nickel-bass alloy material 28 times after repairing, and (b) is the SEM photo in nickel-bass alloy material reparation 1000 times, district.Fig. 2 (a) the right is for repairing district, and the left side is nickel-bass alloy material (matrix), as can be seen from (a), repairs between district and matrix and forms good metallurgical binding.Fig. 2 (b) is for repairing district's microstructure, and as can be seen from the figure, repair district's flawless, even tissue, Main Tissues is γ phase, identical with matrix, reaches good repairing effect.The microhardness mean value repairing district is 427HV.Repair sample to circulate 100 times in the fatigue test of electric hot water cold process, crack length is 0.96mm.(instrument that this fatigue test adopts is chamber type electric resistance furnace, and the condition of mensuration is that water-cooled 10 seconds, circulated 100 times 900 DEG C of insulations 6 minutes.）
Above-described embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (8)
1. a Ni based powder metallurgy repair materials, is characterized in that: be made up of following component by mass percentage:
Co-based alloy powder 65 ~ 80%
Active auxiliary Co-based alloy powder 15 ~ 25%
Plasticizing forming agent 5 ~ 10%;
Described Co-based alloy powder composition is: by mass percentage, Ni55.08 ~ 67.85%, Cr13.58 ~ 15.67%, Co6.13 ~ 8.45%, W2.06 ~ 3.58%, Mo3.45 ~ 5.55%, Al2.45 ~ 4.25%, Ti3.16 ~ 5.25%, Nb1.10 ~ 1.90%, Y0.01 ~ 0.05%, C0.03 ~ 0.08%, B0.04 ~ 0.09%, Hf0.05 ~ 0.14%, all the other are trace impurity;
Described activity assists Co-based alloy powder composition to be: by mass percentage, Ni52.51 ~ 60.49%, Co16.35 ~ 22.45%, Cr6.48 ~ 8.37%, Al3.62 ~ 6.45%, B2.21 ~ 3.67%, Zr7.50 ~ 9.90%, all the other are trace impurity.
2. Ni based powder metallurgy repair materials according to claim 1, it is characterized in that: be that Co-based alloy powder, active auxiliary Co-based alloy powder and plasticizing forming agent are mixed gained, gained Ni based powder metallurgy repair materials is paste plasticity body of powder.
3. Ni based powder metallurgy repair materials according to claim 1, is characterized in that: described Co-based alloy powder and activity assist Co-based alloy powder to be adopt atomization preparation and obtain.
4. Ni based powder metallurgy repair materials according to claim 1, is characterized in that: described plasticizing forming agent is made up of epoxy resin and curing agent, and wherein by mass percentage, epoxy resin content is 40 ~ 50%, and all the other are curing agent.
5. Ni based powder metallurgy repair materials according to claim 4, is characterized in that: described epoxy resin is 6101 type epoxy resin; Described curing agent is EP curing agent.
6. the application of Ni based powder metallurgy repair materials according to claim 1, is characterized in that: the application of described Ni based powder metallurgy repair materials in repairing nickel-based alloy material.
7. application according to claim 6, is characterized in that comprising the steps:
Step one: the pretreatment of nickel-bass alloy material to be repaired
Adopt mechanical means to remove rust staining, the impurity of nickel-bass alloy material to be repaired surface and rejected region, then clean up for subsequent use;
Step 2: the preparation of Ni based powder metallurgy repair materials and coating
Co-based alloy powder, active auxiliary Co-based alloy powder and plasticizing forming agent is added successively in container, mix, obtain Ni based powder metallurgy repair materials, then Ni based powder metallurgy repair materials is coated in surface and the rejected region of nickel-bass alloy material to be repaired cleaned in step one;
Step 3: the powder metallurgy reparation of nickel-bass alloy material to be repaired
The nickel-bass alloy material scribbling repair materials in step 2 is put into hot pressing furnace, heats up with the heating rate of 5 ~ 10 DEG C/min, at 400 ~ 600 DEG C, vacuum is≤10
-2carry out ungrease treatment to nickel-bass alloy material under the condition of Pa, degreasing temperature retention time is 30 ~ 40min; Continue subsequently to heat up, heating rate is 15 ~ 25 DEG C/min, and at 1150 ~ 1250 DEG C, vacuum is≤10
-2carry out sintering reparation to nickel-bass alloy material after degreasing under the condition of Pa, the temperature retention time of sintering is 240 ~ 330min, with stove cooling, must sinter nickel-bass alloy material after repairing;
Step 4: after repairing sintering, mechanical grinding processing is carried out at the reparation position of nickel-bass alloy material, makes the molding surface size at reparation position revert to preprosthetic molding surface size.
8. application according to claim 7, is characterized in that: mechanical means described in step one is the method adopting sand papering, and described cleaning fluid is ethanolic solution, and the percentage by volume of ethanol is 95%;
Hot pressing furnace described in step 3 is vacuum hotpressing stove.
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| CN107774997B (en) * | 2017-10-23 | 2021-02-05 | 江西瑞曼增材科技有限公司 | Laser directional material increase method for nickel-based directional superalloy |
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| CN114310033B (en) * | 2021-12-30 | 2023-06-16 | 东方电气集团东方汽轮机有限公司 | Activating diffusion agent and application thereof |
| CN114703472B (en) * | 2022-03-15 | 2023-07-28 | 湘潭大学 | Method for repairing nickel-based superalloy based on isothermal solidification principle |
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| CN116043066A (en) * | 2022-12-21 | 2023-05-02 | 东方电气集团东方汽轮机有限公司 | Low-diffusivity activation auxiliary agent, application thereof, repairing agent and preparation method and alloy repairing method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1166686A (en) * | 1966-01-03 | 1969-10-08 | Iit Res Inst | Nickel Base Alloys and Process for their Manufacture |
| CN1800425A (en) * | 2004-12-17 | 2006-07-12 | 通用电气公司 | Preform and method of repairing nickel-base superalloys and components repaired thereby |
| CN102943199A (en) * | 2012-12-12 | 2013-02-27 | 江苏新亚特钢锻造有限公司 | High-toughness and abrasion-proof laser cladding nickel-base alloy powder and preparation method thereof |
| CN103521761A (en) * | 2013-10-22 | 2014-01-22 | 江苏盛伟模具材料有限公司 | Micro-nanometer oxide particle reinforced high-abrasion-resistance nickel base alloy powder and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0918020D0 (en) * | 2009-10-15 | 2009-12-02 | Rolls Royce Plc | A method of forging a nickel base superalloy |
-
2014
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1166686A (en) * | 1966-01-03 | 1969-10-08 | Iit Res Inst | Nickel Base Alloys and Process for their Manufacture |
| CN1800425A (en) * | 2004-12-17 | 2006-07-12 | 通用电气公司 | Preform and method of repairing nickel-base superalloys and components repaired thereby |
| CN102943199A (en) * | 2012-12-12 | 2013-02-27 | 江苏新亚特钢锻造有限公司 | High-toughness and abrasion-proof laser cladding nickel-base alloy powder and preparation method thereof |
| CN103521761A (en) * | 2013-10-22 | 2014-01-22 | 江苏盛伟模具材料有限公司 | Micro-nanometer oxide particle reinforced high-abrasion-resistance nickel base alloy powder and preparation method thereof |
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