CN112267112B - Device and method suitable for preparing double-sided iron-based amorphous composite coated plate - Google Patents
Device and method suitable for preparing double-sided iron-based amorphous composite coated plate Download PDFInfo
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- CN112267112B CN112267112B CN202011144405.4A CN202011144405A CN112267112B CN 112267112 B CN112267112 B CN 112267112B CN 202011144405 A CN202011144405 A CN 202011144405A CN 112267112 B CN112267112 B CN 112267112B
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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
- 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/134—Plasma spraying
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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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/18—After-treatment
Abstract
The invention discloses a device and a method suitable for preparing a double-sided iron-based amorphous composite coating plate, wherein the device comprises an air cylinder, a laser head support body, a nut, a support, a cooling plate, a servo motor, a screw rod, a substrate and a clamping block, wherein the support rotates 180 degrees after a laser beam is processed on the substrate by a rotating shaft, then processes one substrate on the other side, processes one double-sided amorphous composite coating by rotating once, and realizes the preparation of the double-sided composite coating of the substrate by the matching of the servo motor and the air cylinder. The device suitable for preparing the double-sided iron-based amorphous composite coating plate has the advantages that the deformation is small in the workpiece processing process, the hardening layer is uniform, the stress distribution is uniform, the preparation of the double-sided coating can be realized by one-time clamping, and the automation is easy to realize; meanwhile, the machining process is not limited by the size of parts, the production period is shortened, the production cost is reduced, and meanwhile, the pollution to the environment and the harm to the health of staff are reduced.
Description
Technical Field
The invention relates to the field of laser cladding remanufacturing, in particular to a device and a method suitable for preparing a double-sided iron-based amorphous composite coating plate.
Background
The amorphous composite coating has the characteristics of high yield strength, large elastic strain limit, no work hardening phenomenon, high wear resistance, excellent corrosion resistance and the like. Compared with crystalline alloy and stainless steel with the same components, the amorphous composite coating has extremely high corrosion resistance, and the specific properties of the amorphous composite coating are incomparable with those of other crystalline materials. The amorphous composite coating not only can play a role in protection and repair parts with failed use, but also can prolong the service life of the material. In the preparation of the amorphous composite coating, two steps of laser cladding and laser remelting are needed. The laser cladding needs high power density and cooling speed, so that the cladding material can be completely melted, and meanwhile, the melting layer of the base material is very thin, so that the dilution of the base body to the cladding alloy is avoided, and the cladding coating with high purity can be obtained. On the basis of laser cladding, an amorphous phase can be formed in a cladding layer by utilizing a larger temperature gradient generated by high-power and ultrahigh-speed laser remelting. Good amorphous coatings require high cooling rate, but in the preparation of the traditional double-sided iron-based amorphous composite coating plate, one surface is remelted first and then another surface is remelted, in the process of remelting one surface, the remelted coating at the back is influenced by residual heat in the previous processing process, and the lower the cooling rate of the coating is, the amorphous phase is formed, and meanwhile, residual stress is left, so that the quality of the amorphous composite coating is reduced. Therefore, the forming quality of the amorphous composite coating is difficult to be accurately controlled, and the improvement of the forming quality of the amorphous composite coating is always a hot spot and a direct target of pursuit of domestic and overseas attention.
Disclosure of Invention
In order to overcome the defects and shortcomings of the prior art, the invention aims to provide a device and a method suitable for preparing a double-sided iron-based amorphous composite coating plate, so that the prepared laser cladding layer has small deformation, more uniform stress distribution and high forming quality, and has more excellent mechanical properties.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a device suitable for preparing a double-sided iron-based amorphous composite coating plate comprises a cylinder, a laser head, a nut, a bracket, a cooling plate, a servo motor, a lead screw, a substrate and a clamping block;
the support is a frame structure formed by connecting a left support and a right support, one end of each of the left support and the right support is respectively provided with a servo motor, and the servo motors are fixedly connected with the side wall of the support through motor fixing pieces; a group of cooling plate systems consisting of an upper cooling plate and a lower cooling plate are arranged between the frame structures of the bracket, cooling water pipes are embedded in the cooling plates, the cooling water pipes and an external cold water source form a cooling water loop, and a substrate is arranged between the upper cooling plate and the lower cooling plate;
the upper part of the upper cooling plate and the lower part of the lower cooling plate bracket are respectively connected with the cylinder; the outer side end of the cylinder is connected with a sliding plate arranged on the bracket through a connecting block and used for loosening and clamping a substrate between the upper cooling plate and the lower cooling plate; a slot is formed in the middle of the cooling plate, a laser emitter is arranged at the slot, the laser emitter comprises a laser head, and the laser head emits laser beams and irradiates the designated position of the substrate;
in the bracket, bracket grooves are respectively formed in the upper side end and the lower side end of the left bracket and the right bracket, and clamping blocks for clamping and positioning the substrate are arranged in the bracket grooves; in the support, the middle part of the frame, which is connected with the left support and the right support, is provided with a rotating shaft, and the rotating shaft is used for being connected with a motor driving shaft of an external machine tool and fixed so as to drive the support and the cooling plate, the base plate, the air cylinder and the sliding plate therein to integrally rotate.
Furthermore, the servo motor is connected with a lead screw, the lead screw is positioned in a bracket groove, a support is arranged in the bracket groove, and the support is a lead screw support; the screw rod is provided with a nut, the nut is connected with the sliding plate, the other side of the sliding plate is positioned in the bracket groove at the other side of the bracket, and the servo motor drives the cylinder on the sliding plate to move transversely through the screw rod nut.
Furthermore, the upper cooling plate and the lower cooling plate are respectively divided into a left cooling plate and a right cooling plate from a middle seam, and the four cooling plates are totally four, each cooling plate is connected with an independent cylinder and a sliding plate, and the sliding plates are respectively driven by respective servo motors through lead screw nuts.
Furthermore, the bracket groove contains two lead screws which respectively control the transverse position of an air cylinder on one sliding plate; the clamping block comprises an upper clamping block, a lower clamping block and a bolt on the clamping block, the clamping block can move in a bracket groove on the bracket, and the bolt is used for fixing the position.
Furthermore, the outer layer of the substrate is a cladding layer; the rotating angle range of the bracket is 0-180 degrees.
Furthermore, the cooling plate driven by the sliding plate completely covers the substrate, and the laser beam and the sliding plate do not interfere with each other.
Furthermore, the clamping block surface of the clamping block is in contact clamping with the substrate, and in addition to the surface in the laser beam direction, the surface is in contact with the substrate and also in contact with the substrate in the axis direction of the rotating shaft, so that the substrate is positioned and clamped, and the precision in the rotating process is ensured.
The application method of the device suitable for preparing the double-sided iron-based amorphous composite coating plate comprises the following steps:
step one, under the protection of argon, uniformly spraying powder on a substrate by using a plasma spraying process; then connecting and fixing the rotating shaft with a motor driving shaft of an external machine tool, fixing the substrate on a bracket through a clamping block, adjusting the placement of the substrate by using a nut and a sliding chute, communicating a cooling water inlet and outlet pipe with an external cold source, and communicating an air cylinder with an air source;
connecting the optical fiber with a laser emitter, adjusting the focal length of the laser head, moving the laser head to enable the light spot of the laser beam to be at a proper initial processing position, carrying out laser remelting on the alloy sprayed on the substrate under the protection of argon, adopting one-way scanning, adjusting the position of the cylinder through a sliding plate, reserving a space larger than the light spot on the substrate, and clamping the substrate;
step three, after one path is processed on the substrate, the laser head moves upwards, the whole mechanism rotates 180 degrees through the rotating shaft, then the laser head moves downwards, and the laser beam is processed on the back surface once again; the cylinder is loosened, the cylinder moves one unit along with the laser, and the cylinder clamps the substrate again;
step four, repeating the operation of the step three until two sides of the whole substrate are processed; and (4) performing stress relief annealing on the remelted composite coating under the protection of argon.
Further, the powder is uniformly sprayed on the low-carbon steel substrate by adopting a plasma spraying process, and the thickness is 1mm.
Furthermore, the laser remelting laser power is 3000W, the spot diameter is 4mm, the lap joint rate is 30%, and the scanning speed is 10mm/s.
Further, the annealing time was 2 hours.
Compared with the prior art, the invention has the beneficial effects that:
the device suitable for preparing the double-sided iron-based amorphous composite coating plate enables the deformation of a workpiece in the processing process to be small, the hardening layer to be uniform and the stress distribution to be uniform, can realize the preparation of a double-sided coating by one-time clamping, and is easy to realize automation. Meanwhile, the machining process is not limited by the size of parts, the production period is shortened, the production cost is reduced, and meanwhile, the pollution to the environment and the harm to the health of staff are reduced.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic front view of the present invention.
Figure 3 is a schematic representation of a stent dissection according to the invention.
Fig. 4 is an overall subdivision schematic diagram of the present invention.
In the figure, the number is 1-servo motor, 2-bracket, 3-rotating shaft, 4-cooling plate, 5-sliding plate, 6-connecting block, 7-cladding layer, 8-cylinder, 9-base plate, 10-cooling water pipe, 11-laser beam, 12-laser head, 13-nut, 14-bearing, 15-lead screw, 16-lower clamping block, 17-bolt, 18-upper clamping block and 19-chute.
Detailed Description
The present invention will be described in further detail with reference to specific examples. The following examples are intended to illustrate the invention only and are not intended to limit the scope of the invention.
A device suitable for preparing a double-sided iron-based amorphous composite coating plate comprises a cylinder 8, a laser head 12, a nut 13, a support 2, a cooling plate 4, a servo motor 1, a screw rod 15, a substrate 9 and a clamping block;
the support 2 is a frame structure formed by connecting a left support and a right support, one end of each of the left support and the right support is respectively provided with a servo motor 1, and the servo motors 1 are fixedly connected with the side wall of the support 2 through motor fixing pieces; a group of cooling plate 4 systems consisting of an upper cooling plate and a lower cooling plate are arranged between the frame structures of the bracket 2, a cooling water pipe 10 is embedded in the cooling plate 4, the cooling water pipe 10 and an external cold water source form a cooling water loop, and a substrate 9 is arranged between the upper cooling plate and the lower cooling plate;
the upper part of the upper cooling plate and the lower part of the lower cooling plate bracket are respectively connected with the cylinder 8; the outer side end of the cylinder 8 is connected with a sliding plate 5 arranged on the bracket through a connecting block 6 and is used for loosening and clamping a base plate 9 between the upper cooling plate and the lower cooling plate; a slot is formed in the middle of the cooling plate 4, a laser emitter is arranged at the slot, the laser emitter comprises a laser head 12, and the laser head 12 emits a laser beam 11 and irradiates the designated position of the substrate 9;
in the support 2, the middle part of the frame connected with the left support and the right support is provided with a rotating shaft 3, and the rotating shaft 3 is connected with a motor driving shaft of an external machine tool and is fixed so as to drive the support 2 and the cooling plate 4, the base plate 9, the cylinder 8 and the sliding plate 5 therein to integrally rotate.
In the bracket 2, bracket grooves are respectively formed at the upper and lower side ends of the left bracket and the right bracket; the servo motor 1 is connected with a lead screw 15, the lead screw 15 is positioned in a bracket groove, a support 14 is arranged in the bracket groove, and the support 14 is a lead screw support; the screw rod 15 is provided with a nut 13, the nut 13 is connected with the sliding plate 5, the other side of the sliding plate 5 is positioned in the bracket groove at the other side of the bracket 2, and the servo motor 1 drives the cylinder 8 on the sliding plate 5 to move transversely through the screw rod nut.
The upper side cooling plate and the lower side cooling plate are respectively divided into a left cooling plate 4 and a right cooling plate 4 from a middle seam, the number of the cooling plates is four, each cooling plate 4 is connected with an independent cylinder 8 and a sliding plate 5, and the sliding plates 5 are respectively driven by respective servo motors 1 through lead screw nuts.
The bracket groove contains two lead screws 15 which respectively control the transverse position of the cylinder 8 on one sliding plate 5; the clamping blocks used for clamping and positioning the substrate 9 are arranged in the support grooves and comprise upper clamping blocks 18, lower clamping blocks 16 and bolts 17 arranged on the clamping blocks, the clamping blocks can move in the support grooves in the support 2, and the bolts 17 are used for fixing positions.
The outer layer of the substrate 9 is a cladding layer 7; the angle range of the support 2 is 0-180 degrees.
The cooling plate driven by the sliding plate 5 completely covers the substrate 9, and the laser beam 11 and the sliding plate 5 do not interfere with each other.
The clamping block can clamp the substrate 9 with a certain range of sizes, the clamping block considers the positioning of the substrate 9, the clamping block surface of the clamping block is in contact clamping with the substrate 9, the surface along the direction of the laser beam 11 is in contact, and the surface along the axis direction of the rotating shaft 3 is also in contact, so that the substrate 9 is positioned and clamped, and the precision in the rotating process is ensured.
The using method of the device suitable for preparing the double-sided iron-based amorphous composite coating plate comprises the following steps:
step one, under the protection of argon, uniformly spraying powder on a substrate 9 by using a plasma spraying process; then the rotating shaft 3 is connected and fixed with a motor driving shaft of an external machine tool, the substrate 3 is fixed on the bracket 2 through a clamping block, the placement of the substrate 9 is adjusted by a nut 14 and a sliding chute, the cooling water inlet and outlet pipe 10 is communicated with an external cold source, and then the air cylinder 8 is communicated with an air source;
connecting the optical fiber with a laser emitter, adjusting the focal length of a laser head 12, moving the laser head 12 to enable the light spot of a laser beam 11 to be at a proper initial processing position, carrying out laser remelting on the alloy sprayed on the substrate 9 under the protection of argon, adopting one-way scanning, adjusting the position of an air cylinder 8 through a sliding plate 5, reserving a space larger than the light spot on the substrate 9, and clamping the substrate 9;
step three, after one path is processed on the substrate, the laser head 12 moves upwards, the whole mechanism rotates 180 degrees through the rotating shaft 3, then the laser head 12 moves downwards, and the laser beam 11 is processed one path on the back side again; the air cylinder 8 is loosened, the air cylinder 8 moves forward one unit along with the laser, and the air cylinder 8 clamps the substrate 9 again;
step four, repeating the operation of the step three until the two sides of the whole substrate 9 are processed; and (4) performing stress relief annealing on the remelted composite coating under the protection of argon, wherein the annealing time is 2h.
And uniformly spraying the powder on a low-carbon steel substrate by adopting a plasma spraying process, wherein the thickness is 1mm.
The laser power of laser remelting is 3000W, the spot diameter is 4mm, the lap joint rate is 30%, and the scanning speed is 10mm/s. The annealing time is 2h.
The laser head should be moved out of the range of the mechanism when moving upwards; when the laser head moves downwards, the downward movement amount is equal to the upward movement amount.
When the size of the workpiece to be processed is changed, the focal length and the angle of the laser head 12 are adjusted to continue processing.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention in any way, and any person skilled in the art can make any simple modification, equivalent replacement, and improvement on the above embodiment without departing from the technical spirit of the present invention, and still fall within the protection scope of the technical solution of the present invention.
Claims (8)
1. The utility model provides a device suitable for preparation of two-sided iron-based amorphous composite coating board which characterized in that: the laser welding device comprises an air cylinder (8), a laser head (12), a nut (13), a bracket (2), a cooling plate (4), a servo motor (1), a screw rod (15), a substrate (9) and a clamping block;
the support (2) is of a frame structure formed by connecting a left support and a right support, one end of each of the left support and the right support is provided with a servo motor (1), and the servo motors (1) are fixedly connected with the side wall of the support (2) through motor fixing pieces; a group of cooling plate (4) system consisting of an upper cooling plate and a lower cooling plate is arranged between the frame structures of the bracket (2), a cooling water pipe (10) is embedded in the cooling plate (4), the cooling water pipe (10) and an external cold water source form a cooling water loop, and a substrate (9) is arranged between the upper cooling plate and the lower cooling plate;
the upper part of the upper cooling plate and the lower part of the lower cooling plate bracket are respectively connected with a cylinder (8); the outer side end of the cylinder (8) is connected with a sliding plate (5) arranged on the bracket through a connecting block (6) and used for loosening and clamping a base plate (9) between the upper cooling plate and the lower cooling plate; a slot is formed in the middle of the cooling plate (4), a laser emitter is arranged at the slot, the laser emitter comprises a laser head (12), and the laser head (12) emits a laser beam (11) and irradiates the designated position of the substrate (9);
in the bracket (2), bracket grooves are respectively formed at the upper and lower side ends of the left bracket and the right bracket; a clamping block for clamping and positioning the substrate (9) is arranged in the bracket groove; in the support (2), a rotating shaft (3) is arranged in the middle of a frame connected with a left support and a right support, and the rotating shaft (3) is connected and fixed with a motor driving shaft of an external machine tool so as to drive the support (2) and a cooling plate (4), a base plate (9), a cylinder (8) and a sliding plate (5) in the support to integrally rotate;
the servo motor (1) is connected with a lead screw (15), the lead screw (15) is positioned in a bracket groove, a support (14) is arranged in the bracket groove, and the support (14) is a lead screw support; be equipped with nut (13) on lead screw (15), nut (13) with slide (5) link to each other, the opposite side of slide (5) is located the opposite side support slot of support (2), servo motor (1) carry out lateral shifting through lead screw nut drive cylinder (8) on slide (5).
2. The apparatus suitable for preparing double-sided iron-based amorphous composite coating plate according to claim 1, is characterized in that: the upper side cooling plate and the lower side cooling plate are respectively divided into a left cooling plate (4) and a right cooling plate (4) from a middle seam, the four cooling plates (4) are totally arranged, each cooling plate (4) is connected with an independent cylinder (8) and a sliding plate (5), and the sliding plates (5) are respectively driven by respective servo motors (1) through lead screw nuts.
3. The device suitable for preparing the double-sided iron-based amorphous composite coating plate according to claim 2, is characterized in that: the bracket groove contains two lead screws (15) which respectively control the transverse position of an air cylinder (8) on one sliding plate (5); the clamping blocks comprise upper clamping blocks (18), lower clamping blocks (16) and bolts (17) on the clamping blocks, the clamping blocks can move in support grooves on the support (2), and the bolts (17) are used for fixing positions.
4. The device suitable for preparing the double-sided iron-based amorphous composite coating plate according to claim 1, is characterized in that: the outer layer of the substrate (9) is a cladding layer (7); the rotating angle range of the bracket (2) is 0-180 degrees.
5. The device suitable for preparing the double-sided iron-based amorphous composite coating plate according to claim 1, is characterized in that: the cooling plate driven by the sliding plate (5) completely covers the substrate (9), and the laser beam (11) and the sliding plate (5) do not interfere with each other.
6. The apparatus suitable for preparing double-sided Fe-based amorphous composite coated plate according to claim 3, wherein: the clamping block surface of the clamping block is in contact clamping with the substrate (9), and in addition to the contact of the surface along the direction of the laser beam (11), the surface is also in contact along the axial direction of the rotating shaft (3), so that the substrate (9) is positioned and clamped, and the precision in the rotating process is ensured.
7. The use method of the device suitable for preparing the double-sided iron-based amorphous composite coated plate as described in any one of claims 1 to 6, is characterized in that: the method comprises the following steps:
step one, under the protection of argon, uniformly spraying powder on a substrate (9) by using a plasma spraying process; then the rotating shaft (3) is connected and fixed with a motor driving shaft of an external machine tool, the substrate (3) is fixed on the bracket (2) through a clamping block, a nut (14) and a sliding groove are used for adjusting the placement of the substrate (9), a cooling water inlet and outlet pipe (10) is communicated with an external cold source, and then an air cylinder (8) is communicated with an air source;
connecting the optical fiber with a laser transmitter, adjusting the focal length of a laser head (12), moving the laser head (12) to enable the light spot of a laser beam (11) to be at a proper initial processing position, carrying out laser remelting on the alloy sprayed on the substrate (9) under the protection of argon, adjusting the position of an air cylinder (8) through a sliding plate (5) by adopting one-way scanning, reserving a space larger than the light spot on the substrate (9), and clamping the substrate (9);
step three, after one path is processed on the substrate, the laser head (12) moves upwards, the whole mechanism rotates 180 degrees through the rotating shaft (3), then the laser head (12) moves downwards, and the laser beam (11) is processed on the back side again; the air cylinder (8) is loosened, the air cylinder (8) moves forward one unit along with the laser, and the air cylinder (8) clamps the substrate (9) again;
step four, repeating the operation of the step three until the two sides of the whole substrate (9) are processed; and (4) performing stress relief annealing on the remelted composite coating under the protection of argon.
8. The use method of the device suitable for preparing the double-sided iron-based amorphous composite coating plate according to claim 7 is characterized in that: uniformly spraying the powder on a low-carbon steel substrate by adopting a plasma spraying process, wherein the thickness of the low-carbon steel substrate is 1mm; the laser power of laser remelting is 3000W, the spot diameter is 4mm, the lap joint rate is 30%, and the scanning speed is 10mm/s; the annealing time is 2h.
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| CN210438838U (en) * | 2019-06-27 | 2020-05-01 | 衢州学院 | Laser cladding device |
| CN110923700A (en) * | 2019-11-26 | 2020-03-27 | 中山市名鼎科技节能有限公司 | Steel surface coating, preparation method and device |
| CN211199407U (en) * | 2019-11-26 | 2020-08-07 | 中山市名鼎科技节能有限公司 | Metal matrix surface coating structure and forming device |
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