CN113770487A - Surface overlaying process of aluminum bronze alloy welded by CMT - Google Patents
Surface overlaying process of aluminum bronze alloy welded by CMT Download PDFInfo
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- CN113770487A CN113770487A CN202111095933.XA CN202111095933A CN113770487A CN 113770487 A CN113770487 A CN 113770487A CN 202111095933 A CN202111095933 A CN 202111095933A CN 113770487 A CN113770487 A CN 113770487A
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- 238000000034 method Methods 0.000 title claims abstract description 100
- 230000008569 process Effects 0.000 title claims abstract description 98
- 229910000906 Bronze Inorganic materials 0.000 title claims abstract description 59
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 58
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 238000003466 welding Methods 0.000 claims abstract description 170
- 238000005498 polishing Methods 0.000 claims abstract description 15
- 238000004140 cleaning Methods 0.000 claims abstract description 8
- 239000012535 impurity Substances 0.000 claims abstract description 8
- 230000007704 transition Effects 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000011229 interlayer Substances 0.000 claims description 8
- 239000010410 layer Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- 230000003746 surface roughness Effects 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- 230000008021 deposition Effects 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 238000005552 hardfacing Methods 0.000 claims 9
- 238000001556 precipitation Methods 0.000 abstract 1
- 239000010974 bronze Substances 0.000 description 7
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005201 scrubbing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention provides a surface overlaying process of an aluminum bronze alloy welded by CMT, and relates to the technical field of overlaying. The surface overlaying process based on the CMT welded aluminum bronze alloy comprises the following steps of: A. polishing and cleaning the workpiece before welding, B, configuring welding equipment and C, implementing the welding process. The aluminum bronze alloy is transferred onto the workpiece by using the CMT welding process, so that the bonding strength of the aluminum bronze alloy and the surface of the workpiece is greatly increased, when the aluminum bronze alloy is attached to the surface of the workpiece by using the welding process, the bonding strength of the aluminum bronze alloy and the bonding layer of the workpiece at each position is consistent, the density is also consistent, and hard phase precipitation, air holes, impurities and the like do not exist.
Description
Technical Field
The invention relates to the technical field of surfacing, in particular to a surfacing process for aluminum bronze alloy welded by CMT.
Background
Aluminum bronze has high strength, hardness and wear resistance, and is commonly used for manufacturing gear blanks, threads and other parts. Aluminum bronze is very corrosion resistant and therefore can be used to make corrosion resistant parts such as propellers, valves, etc. The aluminum bronze does not generate sparks under the impact action, and can be used for manufacturing sparkless tool materials. The high-strength stainless steel plate heat exchanger has the advantages of excellent heat conductivity coefficient and stable rigidity, and can not generate die sticking, workpiece scratching and the like when being used as a die material for stretching and rolling a stainless steel plate heat exchanger, thus becoming a novel die material.
Aluminum bronze has a shape memory effect and has been developed as a shape memory alloy. The aluminum bronze alloy is relatively cheap and becomes a partial substitute of some expensive metal materials, such as tin bronze, stainless steel, nickel-based alloy and the like. Owing to the excellent characteristics of aluminum bronze, aluminum bronze is increasingly favored and plays an important role in the civil and military industries.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a surface overlaying process of aluminum bronze alloy welded by CMT, which solves the problems of low bearing quality, low efficiency, low utilization rate and the like.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a surface overlaying process of aluminum bronze alloy welded by CMT comprises the following steps:
A. polishing and cleaning the workpiece before welding, and removing impurities, oxides and the like on the surface of the workpiece to greatly improve the surface roughness of the workpiece and increase the bonding strength;
B. the welding equipment is configured and mainly comprises a welding machine and stroke equipment, so that the aluminum bronze alloy has stable quality and process in the welding process;
C. and (5) carrying out a welding process, and selecting and formulating a welding process to complete the welding of the aluminum bronze alloy.
Preferably, the workpiece is polished before A welding, mainly a polishing plate is arranged on an electric angle grinder to polish the surface of the workpiece, the workpiece must be cleaned and exposed to light, oxides and impurities on the surface of the workpiece are removed through polishing, and oil and water on the surface of the workpiece to be welded are removed through alcohol or acetone scrubbing.
Preferably, the workpiece is polished before a welding, the workpiece surface roughness is increased by polishing with a grinding wheel, and the bonding strength after welding can be increased and stabilized when the roughness is large.
Preferably, the welding equipment with the configuration B mainly comprises a configuration welding machine and welding stroke equipment; the welding equipment is FRONIUSTPS 4000CMT welding equipment and consists of a power supply, a water tank, a wire feeder and a welding gun, and the welding travel equipment comprises a robot or a special welding machine and the like.
Preferably, the welding equipment and the stroke equipment in the welding equipment with the configuration B require stable equipment determination in the welding process, mainly comprise a transition process, a walking process, a wire feeding process and the like, and specifically comprise that the constant voltage of a welding arc is less than or equal to 0.5V, the error range of the welding speed is less than or equal to 2m/min and less than or equal to 0.1m/min, and the error of the wire feeding speed is less than or equal to 7.5m/min and less than or equal to 0.1 m/min.
Preferably, the welding process implemented by the step C mainly comprises the steps of selecting a welding program, selecting welding process parameters and selecting welding process parameters.
Preferably, the welding program selection in the welding process implemented by the step C is mainly researched and developed according to parameters such as the melting point and the spreadability of the aluminum bronze alloy material, and according to the material characteristics of the aluminum bronze alloy, the program selection is performed according to a FRONIUS 0271CMT program, wherein the program characteristic is that the CMT is a low-melting-point short-circuit transition process, and the CMT process has a lower current under the condition of the same wire feed speed compared with the conventional MIG welding process, so that when the aluminum bronze alloy is welded, the program selection steps are as follows: taking a wire feeding speed of 10M/MIN as an example, the tin melting point is 231 ℃, the spreadability is good, in the process of CMT short circuit transition, in order to ensure that the arc length and the current voltage selection are small, a unified parameter is adopted for achieving the relationship of stable transition, namely, when the wire feeding speed is increased by 1M/MIN, the current is increased by 10A, and the voltage is increased by 1V, the proportioning expert program is carried out according to the relationship.
Preferably, in the welding process implemented by the step C, welding parameter data optimization is carried out according to parameters in an expert program, and the following steps are designed in the selection process: firstly, current and wire feeding speed are selected according to the thickness of a workpiece plate and deposition efficiency, then whether swing and welding speed are selected according to the welding efficiency, finally arc hardness and arc length are selected according to the welding speed, and welding parameters of CMT welding aluminum bronze alloy are adjusted according to the relation.
Preferably, in the welding process of the step C, the parameters of the welding process are mainly selected in the process after the selected welding process parameters are applied, and are mainly adjusted according to the characteristics of the aluminum bronze alloy material and the state of a workpiece or a welding seam in the welding process, and the workpiece needs to be properly cooled when the interlayer temperature is too high in the welding process; and cleaning the welding line when the interlayer is selected according to the state of the surface of the welding layer, and selecting whether to increase the inclination angle according to the oxidation condition of the welded surface of the welding line in the welding process.
Preferably, in the welding process of C, in order to stabilize data in the welding process, quantitative parameters are set as follows: the dry elongation is 15mm, the air flow is 15L/min, the inner diameter of the nozzle is 18mm, and in order to ensure the stable welding quality, the welding process of each layer is a CMT short circuit transition process.
(III) advantageous effects
The invention provides a surface overlaying process of an aluminum bronze alloy welded by CMT. The method has the following beneficial effects:
1. the surface overlaying process of the aluminum bronze alloy welded by the CMT can obtain the highest quality of the shaft bearing in the hydraulic cylinder, has no segregation, cracks and air holes, the welded aluminum bronze alloy layer is machined to an effective welding layer PT to detect the generation of the air holes, the aluminum bronze alloy is welded in a mode of welding stress, the cracks are not generated, the aluminum bronze alloy is transited in a welding mode, the CMT welding process is low in energy, one-step forming is adopted, the liquidus time is short, and a liquid-phase molten pool is rapidly solidified.
2. The surface overlaying process of the aluminum bronze alloy welded by the CMT has high bonding strength and service life multiplied, and the aluminum bronze alloy bonding layer in welding transition has high strength, so that the service life of the hydraulic cylinder bearing is multiplied.
3. According to the surface overlaying process for the aluminum bronze alloy welded by the CMT, the aluminum bronze alloy is the same as other materials, the requirement on the shape is not high, the full-automatic operation can be realized, the quality stability is good, the radial bearing bush and the hydraulic cylinder bearing are simple in structure according to the classification of the sliding bearing, and the automatic welding can be realized mainly by taking a cylindrical shape as a main part.
4. The surface overlaying process of the aluminum bronze alloy welded by the CMT has the advantages of environment friendliness, energy conservation, high efficiency, high material utilization rate, no generation of great smoke dust in a welding mode, simple structure of welding equipment, low power consumption, automatic welding, low maintenance cost and capability of being operated by a single person at multiple stations.
5. The surface overlaying process of the aluminum bronze alloy welded by the CMT disclosed by the invention is flexible in manufacturing and multi-strategy control, and provides infinite possibility for the research and development of high-end hydraulic cylinder bearings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
the embodiment of the invention provides a surface overlaying process of an aluminum bronze alloy welded by CMT, which comprises the following steps:
A. polishing and cleaning the workpiece before welding, and removing impurities, oxides and the like on the surface of the workpiece to greatly improve the surface roughness of the workpiece and increase the bonding strength;
B. the welding equipment is configured and mainly comprises a welding machine and stroke equipment, so that the aluminum bronze alloy has stable quality and process in the welding process;
C. and (5) carrying out a welding process, and selecting and formulating a welding process to complete the welding of the aluminum bronze alloy.
The welding process of the hydraulic cylinder inner bearing is as follows:
A. polishing and cleaning a workpiece before welding:
s1, placing the to-be-welded surface of the bearing in the hydraulic cylinder flat, polishing the surface of the thrust bearing bush by using a grinding wheel piece arranged on an electric angle grinder, removing rust, oxides, impurities and the like on the surface, wherein the light is needed after polishing, and the roughness of the polished surface is lower than Ra25 mu m;
and S3, scrubbing the surface of the thrust bearing bush by using a rag soaked by alcohol or acetone, and removing impurities such as oil stains, water and the like on the surface of the bearing bush.
B. Configuring a welding device:
s1, the welding machine is configured by a FRONIUS TPS4000CMT welding device, and the welding machine consists of a power supply, a water tank, a wire feeder and a welding gun. The power supply is a TPS4000CMT constant voltage power supply, the constant voltage of a welding arc is less than or equal to 0.5V, and the rated current is 400A; the water tank is matched with a water tank originally matched with FRONIUS FK4000, and the water flow is 7L/min; the wire feeder is matched with FRONIUS VR1550, the rated wire feeding speed is 0-22M/min, and the error is less than or equal to 0.1M/min;
s2, selecting an ABB 1520ID robot as a stroke device, wherein the length of a robot arm reaches 1,5 meters, the device has good applicability to a bearing in a hydraulic cylinder, and the stability of welding speed is guaranteed.
C. And (3) implementing a welding process:
1) selection of welding process parameters:
s1, selecting a welding program, importing the edited aluminum bronze alloy welding program into a power supply by a computer before welding, and selecting the program on the power supply according to the following steps:
confirming welding material → confirming welding wire diameter → confirming gas → confirming welding process (transition mode);
s2, selecting welding parameters, selecting the welding parameters after the welding program is selected according to the step I, and following steps are followed in the selection process: firstly, selecting current and wire feeding speed according to the thickness of a workpiece plate and deposition efficiency, then selecting whether to swing and weld the speed according to the welding efficiency, finally selecting the hardness and the length of an electric arc according to the welding speed, and adjusting the welding parameters of a bearing in the CMT welding hydraulic cylinder according to the relation;
s3, selecting welding process parameters, mainly adjusting according to the characteristics of the aluminum bronze alloy material and the state of a workpiece or a welding seam in the welding process, such as: interlayer polishing, a welding gun inclination angle, interlayer temperature and the like, wherein in the welding process, when the interlayer temperature is too high, a workpiece needs to be properly cooled; cleaning the welding seam when the interlayer is selected according to the state of the surface of the welding layer; selecting whether to increase the inclination angle according to the oxidation condition of the welded surface of the welding seam in the welding process;
s4, selecting welding quantitative parameters, wherein the welding quantitative parameters of the bearing in the hydraulic cylinder are set as follows: dry elongation of 15mm, air flow rate of 15L/min, and nozzle inner diameter of 18 mm.
2) Selecting welding stroke parameters:
s1, setting a robot program according to the shape of the hydraulic cylinder inner bearing, wherein the hydraulic cylinder inner bearing is in a cylindrical regular shape, the automatic welding is carried out according to the embodiment, the program carries out automatic welding deviation according to the width of a welding bead, the number of the deviated tracks is calculated according to the length of a position to be welded, the deviation direction is carried out along with the positive and negative directions of Y, and the Y direction is +/-5 mm;
and S2, when the manual mode is debugged, the robot mode is turned to automatic, namely, welding is started.
3) Starting welding:
s1, installing a welding wire, and selecting a quick-wear part matched with the diameter of the welding wire, such as: a conductive nozzle, a yarn guide tube and a yarn guide wheel;
s2, switching on gas, wherein AR 100% is used in the embodiment;
and S3, pressing the robot demonstrator to start welding.
4) And finishing welding.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A surface overlaying process of aluminum bronze alloy welded by CMT is characterized in that: the method comprises the following steps:
A. polishing and cleaning the workpiece before welding, and removing impurities, oxides and the like on the surface of the workpiece to greatly improve the surface roughness of the workpiece and increase the bonding strength;
B. the welding equipment is configured and mainly comprises a welding machine and stroke equipment, so that the aluminum bronze alloy has stable quality and process in the welding process;
C. and (5) carrying out a welding process, and selecting and formulating a welding process to complete the welding of the aluminum bronze alloy.
2. The process of hardfacing of aluminum bronze alloys using CMT welding according to claim 1, characterized by: the workpiece polishing before the A welding is mainly characterized in that an electric angle grinder is used for installing a polishing sheet to polish the surface of the workpiece, the surface of the workpiece needs to be cleaned and exposed to light, in addition, oxides and impurities on the surface of the workpiece are removed through polishing, and then the surface of the workpiece to be welded is scrubbed through alcohol or acetone to remove oil stains and water on the surface.
3. The process of hardfacing of aluminum bronze alloys using CMT welding according to claim 2, characterized in that: the workpiece is polished before welding A, the surface roughness of the workpiece is increased through the polishing relation of the grinding wheel, and the bonding strength after welding can be increased and stabilized under the condition of large roughness.
4. The process of hardfacing of aluminum bronze alloys using CMT welding according to claim 1, characterized by: the B configuration welding equipment mainly comprises a configuration welding machine and welding stroke equipment; the welding equipment is FRONIUS TPS4000CMT welding equipment and comprises a power supply, a water tank, a wire feeder and a welding gun, and the welding travel equipment comprises a robot or a special welding machine and the like.
5. The process of hardfacing of aluminum bronze alloys using CMT welding according to claim 4, wherein: the welding equipment and the stroke equipment in the welding equipment with the configuration B require stable equipment determination in the welding process, mainly comprise a transition process, a walking process, a wire feeding process and the like, and specifically comprise that the constant pressure of a welding arc is less than or equal to 0.5V, the error range of the welding speed which is less than or equal to 2m/min is less than or equal to 0.1m/min, and the error range of the wire feeding speed which is less than or equal to 7.5m/min is less than or equal to 0.1 m/min.
6. The process of hardfacing of aluminum bronze alloys using CMT welding according to claim 1, characterized by: and C, performing a welding process mainly comprises the steps of selecting a welding program, selecting welding process parameters and selecting welding process parameters.
7. The process of hardfacing of aluminum bronze alloys using CMT welding according to claim 6, wherein: c, in the implementation of welding, the selection of a welding program is mainly researched and developed according to parameters such as melting point and spreadability of the aluminum bronze alloy material, according to the material characteristics of the aluminum bronze alloy, the program selects a FRONIUS 0271CMT program, and the program is characterized in that the CMT is a low-melting-point short circuit transition process, and compared with the traditional MIG welding process, the CMT process has lower current under the condition of the same wire feeding speed, so when the aluminum bronze alloy is welded, the program selection steps are as follows: taking a wire feeding speed of 10M/MIN as an example, the tin melting point is 231 ℃, the spreadability is good, in the process of CMT short circuit transition, in order to ensure that the arc length and the current voltage selection are small, a unified parameter is adopted for achieving the relationship of stable transition, namely, when the wire feeding speed is increased by 1M/MIN, the current is increased by 10A, and the voltage is increased by 1V, the proportioning expert program is carried out according to the relationship.
8. The process of hardfacing of aluminum bronze alloys using CMT welding according to claim 7, wherein: and C, in the welding process, optimizing welding parameter data according to the parameters in the expert program, wherein the following steps are designed in the selection process: firstly, current and wire feeding speed are selected according to the thickness of a workpiece plate and deposition efficiency, then whether swing and welding speed are selected according to the welding efficiency, finally arc hardness and arc length are selected according to the welding speed, and welding parameters of CMT welding aluminum bronze alloy are adjusted according to the relation.
9. The process of hardfacing of aluminum bronze alloys using CMT welding according to claim 6, wherein: in the welding process, the parameters of the welding process are mainly selected in the process after the selected welding process parameters are applied, and are mainly adjusted according to the characteristics of the aluminum bronze alloy material and the state of a workpiece or a welding seam in the welding process, and the workpiece needs to be properly cooled when the interlayer temperature is too high in the welding process; and cleaning the welding line when the interlayer is selected according to the state of the surface of the welding layer, and selecting whether to increase the inclination angle according to the oxidation condition of the welded surface of the welding line in the welding process.
10. The process of hardfacing of aluminum bronze alloys using CMT welding according to claim 1, characterized by: in the implementation welding process of C, in order to achieve the stability of data in the welding process, quantitative parameters are set as follows: the dry elongation is 15mm, the air flow is 15L/min, the inner diameter of the nozzle is 18mm, and in order to ensure the stable welding quality, the welding process of each layer is a CMT short circuit transition process.
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| CN202111095933.XA CN113770487A (en) | 2021-09-18 | 2021-09-18 | Surface overlaying process of aluminum bronze alloy welded by CMT |
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| CN202111095933.XA CN113770487A (en) | 2021-09-18 | 2021-09-18 | Surface overlaying process of aluminum bronze alloy welded by CMT |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115213638A (en) * | 2022-07-22 | 2022-10-21 | 上海涟屹轴承科技有限公司 | Composite copper alloy part for cone crusher and manufacturing method thereof |
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Application publication date: 20211210 |