CN105506620A - Synchronous laser cladding method of copper-base-surface composite nickel-base alloy - Google Patents
Synchronous laser cladding method of copper-base-surface composite nickel-base alloy Download PDFInfo
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- CN105506620A CN105506620A CN201511032387.XA CN201511032387A CN105506620A CN 105506620 A CN105506620 A CN 105506620A CN 201511032387 A CN201511032387 A CN 201511032387A CN 105506620 A CN105506620 A CN 105506620A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/055—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 20% but less than 30%
Abstract
The invention discloses a synchronous laser cladding method of a copper-base-surface composite nickel-base alloy, belonging to the field of laser cladding. The method comprises the following steps: 1. carrying out overall ultrasonic flaw detection and surface staining flaw detection treatment on a copper plate to be cladded; 2. carrying out activation coating treatment on the copper plate surface; 3. preheating the overall copper plate to 300-450 DEG C, covering the periphery with 20-40mm-thick thermal-insulation cotton to reduce heat dissipation; 4. carrying out cladding by using a carbon dioxide transverse laser beam, carrying out inert gas protection on the melting bath, and carrying out cladding powder delivery by using nickel-base alloy powder; and 5. cooling the cladded copper plate in air to room temperature. According to the technical scheme, the coating treatment is performed on the copper product surface to lower the reflection rate of the copper product, thereby reducing the energy loss. The adopted nickel-base alloy powder has the advantages of high hardness and favorable binding property with the copper base, and enhances the wear resistance and service life of the copper plate.
Description
Technical field
The present invention relates to laser melting and coating technique field, more particularly, relate to a kind of synchronous laser cladding method of copper-based surfaces compound nickel-base alloy.
Background technology
Copper and its alloy human history uses one of metallic substance the earliest, current copper remains very important a kind of metal in industry, in the many links of metallurgical industry, copper is all key part, copper is owing to having excellent thermal conductivity, electroconductibility and excellent plasticity, be widely used in electric power, electrician, mine, metallurgy and machinery manufacturing industry, but the hardness of copper alloy surface is low, hot wear resisting property is poor, greatly limit its application, usually need in engineer applied to carry out surface modification, to strengthen its comprehensive mechanical property, conventional method has plating and thermospray, plating, to improve its wear resistance and solidity to corrosion, but the coating prepared due to plating and thermospray and matrix are mechanical bond, and the more difficult control of the technique of plating, and process costs is higher, therefore reduce its strengthening effect to a certain extent.
Laser melting coating (LaserCladding) is also known as laser cladding or laser cladding, it is a kind of new process for modifying surface, it is by adding cladding material at substrate surface, and utilize the laser beam of high-energy-density to make it the method for consolidation together with substrate surface thin layer, at the filling cladding layer that substrate surface formation and its are metallurgical binding, laser melting and coating technique can prepare the specific function coating forming metallurgical binding with matrix, environmentally safe, also there is productivity high, the feature such as the high and comprehensive cost of yield rate is low, but traditional laser melting coating is all carry out cladding at common alloy steel matrix surface usually, very limited to the castering action that need carry out the performance of the metal of surface modification treatment, but larger cladding difficulty is existed for red copper alloy, mainly copper is higher for sharp light reflectance, the laser being irradiated to surface is reflected, the thermal conductivity of copper is good on the other hand, and a large amount of laser energies is conducted, and during cladding, institute's energy requirement is larger.
In order to reduce the reflectivity on copper surface in prior art, mostly be adopt the method for preset coating to carry out laser melting coating, but because the thermal conductivity of copper is good, also do not carry out cladding add man-hour peripheral region coating started melt, cause amount of powder and extraneous gas to enter cladding layer, produce and be mingled with and the defect such as bubble; In addition, after preset coating, laser can not directly be processed copper-based surfaces, and the crucible zone degree of depth is little, and both are difficult to abundant fusion, and bonding strength is lower, causes work-ing life short.
When carrying out copper-based surfaces cladding, want to obtain higher bonding strength on the one hand, the reflectivity of copper and the difficult point of thermal conductivity cannot be solved again on the other hand, the wear resistance of copper base alloy is caused to be difficult to effective raising, therefore, how to improve laser melting and coating technique, make the application of laser melting and coating technique in acetic acid technology more general, be significant.
Chinese Patent Application No.: 201410021469.3, the applying date: on January 17th, 2014, invention and created name is: a kind of method of copper alloy surface laser gradient cladding powdered alloy, and this application case discloses a kind of method of copper alloy surface laser gradient cladding powdered alloy.Composition is used to be the Al of 4% ~ 6%, the Ni of 92% ~ 93.5%, all the other Co-based alloy powders being impurity and composition are the C of 0.9% ~ 1.2%, the Cr of 26.5% ~ 30.5%, the Si of 0.8% ~ 1.1%, the W of 3.4% ~ 5.4%, the Fe of 1.0% ~ 2.0%, the Ni of 1.2% ~ 2%, all the other are that the Co-based alloy powder of Co is as coating, by above-mentioned powder mixing and with caking agent respectively by its furnishing paste, after pre-treatment is carried out to the copper alloy surface that need process, two of gained kinds of pastes are coated on copper alloy matrix respectively, make it have the structure of Copper substrate-Ni-based coating-cobalt-based coating-Ni-based coating-cobalt-based coating, finally carry out laser melting coating.
Chinese Patent Application No.: 200910273446.0, the applying date: on December 29th, 2009, this application case discloses Copper and its alloy surface laser cladding composite wear-resistant layer and preparation method, this composite wear-resistant layer is that at least two-layer or two-layer above Multilayer Laser Cladding layer is formed, the coating connecting base material is the first layer, also transition layer is claimed, it is a kind of nickel-base alloy, counting by weight percentage its composition is: Cu20.0 ~ 30.0%, Al6.0 ~ 8.0%, Si0.3 ~ 0.6%, Zr1.7 ~ 2.4%, surplus is Ni; Remainder layer is cobalt base alloy, counts by weight percentage its composition to be: C1.0 ~ 1.5%, Cr25 ~ 30%, Fe2 ~ 4%, W10 ~ 15%, Si0.8 ~ 1.2%, B3 ~ 4%, Ti8 ~ 12%, Ni10 ~ 12%, and surplus is Co.
Above-mentioned two kinds of methods are all adopt preset coating to carry out cladding, and the bonding strength between cladding layer is relatively low, and high life is short.
Summary of the invention
1. invent the technical problem that will solve
The object of the invention is to overcome the deficiency that in prior art, copper material surface laser cladding difficulty is large, provide a kind of synchronous laser cladding method of copper-based surfaces compound nickel-base alloy, technical scheme of the present invention, aluminum coated steel is carried out to reduce the reflecting rate of copper material to copper material surface, decrease power loss, the Co-based alloy powder hardness adopted is high, good with the associativity of copper base, improves work-ing life.
2. technical scheme
For achieving the above object, technical scheme provided by the invention is:
The synchronous laser cladding method of a kind of copper-based surfaces compound nickel-base alloy of the present invention, comprises the following steps:
Step 1, treat cladding copper coin carry out integral ultrasonic flaw detection and surface colour flaw detection guarantee flawless and fatigue layer;
Step 2, carry out activation aluminum coated steel on copper coin surface;
Step 3, to the overall thermal pretreatment of copper coin;
Step 4, the horizontal laser beam of employing carbonic acid gas carry out cladding, protection of inert gas is carried out to molten bath, adopt Co-based alloy powder cladding powder feeding, laser power selects 3.8 ~ 4.2kW, sweep velocity 350 ~ 420mm/min, spot diameter is 3 ~ 5mm, and scan mode is overlap joint scanning, overlapping rate is 30 ~ 50%, and cladding layer total thickness is 0.3 ~ 0.5mm;
Copper coin air cooling after step 5, cladding is to room temperature.
As further improvement of the present invention, the activation aluminum coated steel described in step 2 comprises following technological process:
(1) copper coin surface degreasing is washed;
(2) activation treatment is carried out to the copper coin after washing, and surface impurity is removed in washing again;
(3) configure coating treatment liquid in proportion and carry out black film conversion, copper coin is soaked 1 ~ 2 hour in coating treatment liquid, then washing, drying.
As further improvement of the present invention, described coating treatment liquid is formulated by the mass ratio of 2:1:7 with copper material black film agent A, copper material black film agent B and water.
As further improvement of the present invention, described copper material black film agent A, copper material black film agent B are respectively copper material black film agent C4030, the copper material black film agent C4040 of the special metal finishing company limited of Pizhou City's Weir.
As further improvement of the present invention, in step 4 Co-based alloy powder by weight percentage each composition consist of: C0.1 ~ 0.5%, Cr20 ~ 22%, Si2.5 ~ 4.0%, Fe3 ~ 5%, Mo6.8 ~ 9.0%, Nb3.8 ~ 4.2%, B1.5 ~ 2.2%, surplus is Ni.
As further improvement of the present invention, the granularity of described Co-based alloy powder is 100 ~ 325 orders.
As further improvement of the present invention, described cladding powder feeding adopts argon shield gas to carry special powder feeder and send and put powder in laser molten pool.
Co-based alloy powder of the present invention, Gr has solution strengthening effect, and easy and C, B form GrC, GrB hard phase thus improve alloy rigidity and wear resistance; Make lattice that large distortion occurs after Mo solid solution, remarkable reinforced alloys matrix, improve hot strength and the red hardness of matrix; Nb is a kind of carbide, the avidity of Nb and C is far above the avidity of Fe and C, so after powder is by cladding, Nb first with the C chemical combination in liquation, form the NbC fine particle of a large amount of Dispersed precipitate, as heterogeneous crystallization nuclei, the associativity of cladding layer and copper coin can be improve, refinement tissue.B can thinning microstructure, can not only promote intensity, can also gain in strength and toughness; Appropriate Si can improve the mobility of deposited metals, and due to laser melting coating rapid melting, rapid solidification, deposited metals has little time dispersion just to start to solidify, and increases the distribution that a certain amount of Si can improve deposited metals; B and Si can as molten bath reductor, and oxygen element in removing molten bath improves metal fluidity and increases wettability, can play solution strengthening and dispersion-strengthened action, improves hardness and the wear resistance of overlay.
The various corrosive mediums of this alloy to oxidation and reducing environment all have very outstanding resistance to corrosion, outstanding pitting corrosion and the ability of crevice corrosion, and the stress corrosion crack that can not produce because muriate causes, outstanding inorganic acid resistance corrosive power, as the mixing acid etc. of nitric acid, phosphoric acid, sulfuric acid, hydrochloric acid and sulfuric acid and hydrochloric acid, the ability of outstanding resistance to various mineral acid mixing solutions corrosion, good processibility and weldability, cracking sensitivity after solderless.
3. beneficial effect
Adopt technical scheme provided by the invention, compared with prior art, there is following beneficial effect:
(1) the synchronous laser cladding method of a kind of copper-based surfaces compound nickel-base alloy of the present invention, activation aluminum coated steel is carried out at copper coin surface copper material black film agent A, copper material black film agent B, for film forming provides chemomotive force, thus form black epithelium on copper material surface, improve extinction effect during copper material surface laser process, reduce reflectivity, thus ensure laser treatment operation time security and operability, effectively can reduce the reflection of copper coin surface to laser, increase the specific absorption of laser, reduce power loss;
(2) the synchronous laser cladding method of a kind of copper-based surfaces compound nickel-base alloy of the present invention, the cladding associativity of the Co-based alloy powder adopted and copper coin is good, not easy to crack in use procedure, long service life; In addition, the wearing layer after cladding can improve copper coin surface hardness, has excellent wear resistance.
Accompanying drawing explanation
Fig. 1 is the metallograph on laser melting coating surface in the present invention.
Embodiment
For understanding content of the present invention further, the present invention is described in detail in conjunction with the embodiments.
Embodiment 1
The synchronous laser cladding method of a kind of copper-based surfaces compound nickel-base alloy of the present embodiment, comprises the following steps:
Step 1, treat cladding copper coin carry out integral ultrasonic flaw detection and surface colour flaw detection, by UT (Ultrasonic Testing) confirm without internal fissure, through surface colour detect a flaw be guarantee flawless.
Step 2, carry out activation aluminum coated steel on copper coin surface, activation aluminum coated steel comprises following technological process:
(1) copper coin surface degreasing is washed;
Oil removing is one of surface treatment important procedure, because greasy dirt can affect painting membrane efficiency, the sticking power of film is reduced, so must clean up.Oil removing adopts physical oil-removing method, and can adopt Pizhou City's Weir special metal finishing company limited normal temperature degreasing powder wipe oil, deoiling effect is fast.
(2) activation treatment is carried out to the copper coin after washing, and surface impurity is removed in washing again;
Adopt chemical activation method to carry out activation treatment to copper surface, the mixing solutions of iron(ic) chloride and nitric acid can be adopted to carry out activation treatment, then wash and air-dry or oven dry.Activation treatment can eliminate physics that copper material condition of surface exists or the impact that the heterogeneity of chemistry is brought film process, and to strengthen the bonding strength of copper alloy surface and cladding layer, promotion crystallization is evenly rapidly formed.
(3) configure coating treatment liquid in proportion and carry out black film conversion, copper coin is soaked 2 hours in coating treatment liquid, then washing, drying.
Coating treatment liquid be with copper material black film agent A, the copper material black film agent B of the special metal finishing company limited of Pizhou City Weir and water formulated by the mass ratio of 2:1:7; copper coin is soaked 2 hours in coating treatment liquid; then washing, drying; aluminum coated steel forms one deck black protective film on copper surface, is the requisite measure conscientiously reducing laser reflection.
Copper material black film agent A is the copper material black film agent C4030 that Weir special metal finishing company limited in Pizhou City's produces, containing a series of ionizable metal salt such as Cu2+, Ni2+, Zn2+, with copper material black film agent B with the use of, for playing the carrier ion source that katalysis provides concrete, and be used as the deposition on copper material surface is replaced with yttrium interpolation, improve meltbility and the smooth degree on copper material surface, the remarkable reflection of reduction copper material surface to laser, improves the oxidation-resistance of copper material.
Copper material black film agent B is the copper material black film agent C4040 that Weir special metal finishing company limited in Pizhou City's produces, primarily of the rare earth class ion with " industrial VITAMIN " laudatory title, composite the concentrating of the chemical substances such as organic synthesis product and catalyzer forms, main and copper material black film agent C4030 with the use of, catalysis is carried out to part ion wherein, and provide chemomotive force for film forming, thus form black epithelium on copper material surface, improve extinction effect during copper material surface laser process, reduce reflectivity, thus ensure laser treatment operation time security and operability.
The black protective film of Surface Creation can significantly improve the specific absorption (because black light has the absorption characteristic natural to other colour system spectrum) to laser.Owing to containing molybdate composition in melanism film composition, thus than conventional phosphatizing, there is more thinner crystalline-granular texturees, thus the thickness of melanism film can reach 18 μm, be 2 times of conventional phosphatizing film thickness, so also make the sorption of melanism film to laser more obvious.
Step 3, to the overall thermal pretreatment of copper coin.
Generally speaking, the shrinking percentage of cladding layer is greater than by the less base material of heat effect, easily forms tensile stress and cracks, and adopts thermal pretreatment can improve both associativities, cracks after avoiding cladding; But because the thermal conductivity of copper is better, lower preheating temperature cannot continue time enough, copper coin entirety is heated to more than 300 DEG C can protect and improve copper coin interior tissue stress, improves the bonding strength of cladding layer and copper coin on the one hand, another aspect can reduce answers local heating and the stress that produces.Test adopt copper coin less, can simply preheating and without the need to isothermal holding; If adopt large copper coin, preheating can be carried out as required, be heated to more than 300 DEG C and be incubated.
Step 4, the horizontal laser beam of employing carbonic acid gas carry out cladding; protection of inert gas is carried out to molten bath; and by rare gas element, Co-based alloy powder is delivered to laser molten pool, adopt argon shield gas to carry special powder feeder and send and put powder in laser molten pool, laser power selects 4.0kW; sweep velocity 360mm/min; spot diameter is 3mm, and scan mode is overlap joint scanning, and overlapping rate is 45%; cladding layer thickness is 0.3mm, and copper material surface modification only needs cladding one deck.
Wherein, Co-based alloy powder by weight percentage each composition consists of: C0.3%, Cr20.2%, Si2.8%, Fe3%, Mo8.0%, Nb4.2%, B2.2%, and surplus is Ni, and the granularity of Co-based alloy powder is 150 orders.
Copper coin air cooling after step 5, cladding is to room temperature.
Embodiment 2
Step 1, treat cladding copper coin carry out integral ultrasonic flaw detection and surface colour flaw detection, by UT (Ultrasonic Testing) confirm without internal fissure, through surface colour detect a flaw be guarantee flawless.
Step 2, carry out activation aluminum coated steel on copper coin surface, activation aluminum coated steel comprises following technological process:
(1) copper coin surface degreasing is washed.
(2) activation treatment is carried out to the copper coin after washing, and surface impurity is removed in washing again.
(3) configure coating treatment liquid in proportion and carry out black film conversion, coating treatment liquid be with copper material black film agent C4030, the copper material black film agent C4040 of the special metal finishing company limited of Pizhou City Weir and water formulated by the mass ratio of 2:1:7, copper coin is soaked 1 hour in coating treatment liquid, then washing, drying.
Step 3, be preheated to 350 DEG C to copper coin entirety, preheating adopts 10kW crawler belt well heater homogeneous heating, and the thick insulating cotton covering of surrounding 30mm is to reduce heat radiation.
Step 4, the horizontal laser beam of employing carbonic acid gas carry out cladding, protection of inert gas is carried out to molten bath, and by rare gas element, Co-based alloy powder is delivered to laser molten pool, adopt argon shield gas to carry special powder feeder to send and put powder in laser molten pool, laser power selects 3.8kW, sweep velocity 360mm/min, spot diameter is 3mm, scan mode is overlap joint scanning, and overlapping rate is 45%, and cladding layer thickness is 0.3mm; Wherein, Co-based alloy powder by weight percentage each composition consists of: C0.2%, Cr20.0%, Si3.0%, Fe3%, Mo8.0%, Nb4.0%, B2.0%, and surplus is Ni, and the granularity of Co-based alloy powder is 200 orders.
Copper coin air cooling after step 5, cladding is to room temperature.
Embodiment 3
Step 1, treat cladding copper coin carry out integral ultrasonic flaw detection and surface colour flaw detection, by UT (Ultrasonic Testing) confirm without internal fissure, through surface colour detect a flaw be guarantee flawless;
Step 2, carry out activation aluminum coated steel on copper coin surface, activation aluminum coated steel comprises following technological process:
(1) copper coin surface degreasing is washed.
(2) activation treatment is carried out to the copper coin after washing, and surface impurity is removed in washing again.
(3) configure coating treatment liquid in proportion and carry out black film conversion, coating treatment liquid be with copper material black film agent C4030, the copper material black film agent C4040 of the special metal finishing company limited of Pizhou City Weir and water formulated by the mass ratio of 2:1:7, copper coin is soaked 1.5 hours in coating treatment liquid, then washing, drying.
Step 3, be preheated to 380 DEG C to copper coin entirety, preheating adopts 10kW crawler belt well heater homogeneous heating, and the thick insulating cotton covering of surrounding 25mm is to reduce heat radiation.
Step 4, the horizontal laser beam of employing carbonic acid gas carry out cladding, protection of inert gas is carried out to molten bath, and by rare gas element, Co-based alloy powder is delivered to laser molten pool, adopt argon shield gas to carry special powder feeder to send and put powder in laser molten pool, laser power selects 4.2kW, sweep velocity 400mm/min, spot diameter is 3mm, scan mode is overlap joint scanning, and overlapping rate is 45%, and cladding layer thickness is 0.4mm; Wherein, Co-based alloy powder by weight percentage each composition consists of: C0.1%, Cr21.5%, Si3.5%, Fe3%, Mo8%, Nb4%, B2%, and surplus is Ni, and the granularity of Co-based alloy powder is 200 orders.
Copper coin air cooling after step 5, cladding is to room temperature.Metallograph after cladding as shown in Figure 1, achieves adhere between known copper coin and nickel-base alloy.
Embodiment 4
Step 1, treat cladding copper coin carry out integral ultrasonic flaw detection and surface colour flaw detection, by UT (Ultrasonic Testing) confirm without internal fissure, through surface colour detect a flaw be guarantee flawless;
Step 2, carry out activation aluminum coated steel on copper coin surface, activation aluminum coated steel comprises following technological process:
(1) copper coin surface degreasing is washed.
(2) activation treatment is carried out to the copper coin after washing, and surface impurity is removed in washing again.
(3) configure coating treatment liquid in proportion and carry out black film conversion, coating treatment liquid be with copper material black film agent C4030, the copper material black film agent C4040 of the special metal finishing company limited of Pizhou City Weir and water formulated by the mass ratio of 2:1:7, copper coin is soaked 2 hours in coating treatment liquid, then washing, drying.
Step 3, be preheated to 330 DEG C to copper coin entirety, preheating adopts 10kW crawler belt well heater homogeneous heating, and the thick insulating cotton covering of surrounding 30mm is to reduce heat radiation.
Step 4, the horizontal laser beam of employing carbonic acid gas carry out cladding, protection of inert gas is carried out to molten bath, and by rare gas element, Co-based alloy powder is delivered to laser molten pool, adopt argon shield gas to carry special powder feeder to send and put powder in laser molten pool, laser power selects 4.0kW, sweep velocity 420mm/min, spot diameter is 5mm, scan mode is overlap joint scanning, and overlapping rate is 45%, and cladding layer thickness is 0.3mm; Wherein, Co-based alloy powder by weight percentage each composition consists of: C0.1%, Cr22.0%, Si3.0%, Fe4.0%, Mo7.5%, Nb4%, B1.7%, and surplus is Ni, and the granularity of Co-based alloy powder is 200 orders.
Copper coin air cooling after step 5, cladding is to room temperature.
Schematically above be described the present invention and embodiment thereof, this description does not have restricted, and also just one of the embodiments of the present invention shown in accompanying drawing, actual structure is not limited thereto.So, if those of ordinary skill in the art enlightens by it, when not departing from the invention aim, designing the frame mode similar to this technical scheme and embodiment without creationary, all should protection scope of the present invention be belonged to.
Claims (7)
1. a synchronous laser cladding method for copper-based surfaces compound nickel-base alloy, is characterized in that: comprise the following steps:
Step 1, treat cladding copper coin carry out integral ultrasonic flaw detection and surface colour flaw detection guarantee flawless and fatigue layer;
Step 2, carry out activation aluminum coated steel on copper coin surface;
Step 3, to the overall thermal pretreatment of copper coin;
Step 4, the horizontal laser beam of employing carbonic acid gas carry out cladding, protection of inert gas is carried out to molten bath, adopt Co-based alloy powder cladding powder feeding, laser power selects 3.8 ~ 4.2kW, sweep velocity 350 ~ 420mm/min, spot diameter is 3 ~ 5mm, and scan mode is overlap joint scanning, overlapping rate is 30 ~ 50%, and cladding layer total thickness is 0.3 ~ 0.5mm;
Copper coin air cooling after step 5, cladding is to room temperature.
2. the synchronous laser cladding method of a kind of copper-based surfaces compound nickel-base alloy according to claim 1, is characterized in that: the activation aluminum coated steel described in step 2 comprises following technological process:
(1) copper coin surface degreasing is washed;
(2) activation treatment is carried out to the copper coin after washing, and surface impurity is removed in washing again;
(3) configure coating treatment liquid in proportion and carry out black film conversion, copper coin is soaked 1 ~ 2 hour in coating treatment liquid, then washing, drying.
3. the synchronous laser cladding method of a kind of copper-based surfaces compound nickel-base alloy according to claim 2, is characterized in that: described coating treatment liquid adopts copper material black film agent A, copper material black film agent B and water formulated by the mass ratio of 2:1:7.
4. the synchronous laser cladding method of a kind of copper-based surfaces compound nickel-base alloy according to claim 3, is characterized in that: described copper material black film agent A, copper material black film agent B are respectively copper material black film agent C4030, the copper material black film agent C4040 of the special metal finishing company limited of Pizhou City's Weir.
5. the synchronous laser cladding method of a kind of copper-based surfaces compound nickel-base alloy according to claim 1, it is characterized in that: in step 4 Co-based alloy powder by weight percentage each composition consist of: C0.1 ~ 0.5%, Cr20 ~ 22%, Si2.5 ~ 4.0%, Fe3 ~ 5%, Mo6.8 ~ 9.0%, Nb3.8 ~ 4.2%, B1.5 ~ 2.2%, surplus is Ni.
6. the synchronous laser cladding method of a kind of copper-based surfaces compound nickel-base alloy according to claim 5, is characterized in that: the granularity of described Co-based alloy powder is 100 ~ 325 orders.
7. the synchronous laser cladding method of a kind of copper-based surfaces compound nickel-base alloy according to claim 1, is characterized in that: described cladding powder feeding adopts argon shield gas to carry special powder feeder and send and put powder in laser molten pool.
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| CN110923696A (en) * | 2019-11-01 | 2020-03-27 | 江苏特维克科技有限公司 | Laser cladding nickel-based material for surface of ball valve and additive manufacturing process thereof |
| CN111455373A (en) * | 2020-03-23 | 2020-07-28 | 陕西斯瑞新材料股份有限公司 | Preparation method of high-thermal-conductivity high-temperature-resistant composite copper alloy heat dissipation material |
| CN113463091A (en) * | 2021-07-01 | 2021-10-01 | 安徽煜宸激光技术有限公司 | Copper alloy cladding method |
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