KR20170048954A - laser cladding system and method of using the same - Google Patents

laser cladding system and method of using the same Download PDF

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Publication number
KR20170048954A
KR20170048954A KR1020150149686A KR20150149686A KR20170048954A KR 20170048954 A KR20170048954 A KR 20170048954A KR 1020150149686 A KR1020150149686 A KR 1020150149686A KR 20150149686 A KR20150149686 A KR 20150149686A KR 20170048954 A KR20170048954 A KR 20170048954A
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KR
South Korea
Prior art keywords
cladding
laser
cladding layer
workpiece
base plate
Prior art date
Application number
KR1020150149686A
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Korean (ko)
Inventor
신인승
박형석
최영환
Original Assignee
에스아이에스 주식회사
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Priority to KR1020150149686A priority Critical patent/KR20170048954A/en
Publication of KR20170048954A publication Critical patent/KR20170048954A/en

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    • B29C67/0085—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B23C3/12—Trimming or finishing edges, e.g. deburring welded corners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/02—Milling-cutters characterised by the shape of the cutter
    • B23C5/10—Shank-type cutters, i.e. with an integral shaft
    • 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
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/34—Laser welding for purposes other than joining
    • B23K26/342—Build-up welding
    • B29C67/0088—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y50/00—Data acquisition or data processing for additive manufacturing
    • B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Laser Beam Processing (AREA)

Abstract

The present invention relates to a laser cladding system and a laser cladding method using the same. The laser cladding system includes a base plate on which a material is placed at a predetermined position, first and second moving frames spaced apart from each other on the base plate, And a cladding layer provided on one side of the cladding means and measuring the thickness of the cladding layer. The cladding layer is provided on the second moving frame, And a processing means for processing the microscopic burrs present on the surface into an end mill. The present invention also provides a laser cladding system and a laser cladding method using the laser cladding system.

Description

[0001] The present invention relates to a laser cladding system and a laser cladding method using the same,

The present invention relates to a laser cladding system and a laser cladding method using the laser cladding system. More specifically, the present invention relates to a laser cladding system for improving vulnerability generated on various machine parts and materials, surface processing by a simple process, And a laser cladding method using the same.

Laser-aided direct metal manufacturing is a process that uses precision materials such as metals, alloys, ceramics, etc., The laser cladding technique can be used to produce the tools necessary for producing a three-dimensional product or a product in a very short time.

The three-dimensional shape information includes three-dimensional CAD data, medical CT (computer tomography) and MRI (Magnetic Resonance Imaging) data, and digital data measured by a 3D object digitizing system It says.

A tool is a mass-production mold necessary for producing a die or a mold.

These technologies can be used to produce metal prototypes, mass production molds, complex final products and tools in a short period of time comparable to conventional machining methods such as cutting and casting using CNC (Computerized Numerical Control) And can also be applied to restoration, remodeling and repairing of a mold using reverse engineering.

The basic concept of implementing the physical shape from CAD data is similar to a general printer. Just as a printer produces documents by inking ink at precise locations on a two-dimensional paper plane using document data files stored on a computer, the direct molding technique uses three-dimensional CAD data to accurately position the three- Dimensional physical shape by forming a desired amount of functional material. These technologies are being developed as 3D printers and have recently been used in different directions depending on the characteristics of materials such as plastics, ceramics, paper, and metals.

In a laser direct metal forming technology, a two-dimensional plane is implemented physically using laser cladding technology.

1 is a view for explaining a general laser cladding process.

The laser cladding is formed by locally forming a melt pool 14 by irradiating the surface of the material 10 with a laser beam 12 and simultaneously forming a powder cladding material (metal, alloy, ceramic, paper, etc.) 16 is supplied to form a new cladding layer 18 on the surface of the work 10. [

In the laser direct metal forming technology, two-dimensional cross-sectional information is calculated from three-dimensional CAD data, and a cladding layer having a shape, thickness and / or height corresponding to each two-dimensional cross-sectional information is sequentially formed, It makes products or tools quickly.

The shape of the cladding layer corresponding to the two-dimensional cross-sectional information in the molding process depends mainly on the accuracy of the tool path and the transfer system calculated from the cross-sectional information, and the physical implementation is relatively easy. However, the height of the laser cladding layer depends on the output of the laser, the mode of the laser beam, the size of the laser beam, the feed rate of the material, the characteristics of the cladding powder, the powder feed rate, the falling rate of the powder, The type and the flow rate of the gas. External factors such as the temperature change of the material surface caused by heat accumulation during the cladding process, the material surface and the state of the laser oscillator also affect the height of the cladding layer formed.

Therefore, in order to obtain the height of the cladding layer corresponding to the two-dimensional cross-sectional information, there is a technical difficulty to control the process parameters affecting the height of the cladding layer in real time by monitoring the formation process of the cladding layer in real time.

In the conventional laser cladding process, it is difficult to accurately form a cladding layer due to an error occurring when the cladding layers are stacked due to plasma generated during the operation, There is a problem that it is difficult to utilize the laser cladding system in the work.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in an effort to solve the above-mentioned problems, and it is an object of the present invention to provide a cladding layer that can be formed by precisely controlling the thickness of a cladding layer formed on a work, And a laser cladding method using the same.

In order to achieve the above and other objects of the present invention, according to an embodiment of the present invention, there is provided a method of manufacturing a semiconductor device, comprising: a base plate on which a material is placed at a predetermined position; first and second movable frames spaced apart from each other on the base plate; A cladding layer provided on the first moving frame to form a cladding layer on the surface of the workpiece; measuring means provided on one side of the cladding means for measuring a thickness of the cladding layer; And processing means for processing a microscopic burr present on the surface of the cladding layer into an end mill.

The cladding means includes a cylinder coupled to a rail provided on an upper lower surface of the first moving frame and a support plate coupled to an end of a cylinder rod provided in the cylinder to irradiate a rare- And a cladding material supply member provided on the support plate at a predetermined distance from the laser head to supply cladding powder and auxiliary gas to the surface of the workpiece at the same time.

And the measuring means is any one of a 3D scanning or a CCD camera.

And an automatic tool changer (ATC) is installed at a predetermined position on one side of the base plate to automatically replace the end mill provided in the machining means.

It is still another object of the present invention to provide a laser cladding method using a laser cladding system, comprising the steps of: placing a material at a predetermined position of the base plate; cladding a surface of the material using cladding means provided on the first moving frame; Forming a cladding layer by melting the surface of the workpiece and the cladding powder by oscillating the laser beam while supplying the powder and the auxiliary gas at the same time; measuring the thickness of the cladding layer using the measuring means; A step of processing the surface of the cladding layer by the processing means so as to remove a minute burr present on a surface of the cladding layer formed on the surface of the cladding layer, And repeating the processing step.

According to the present invention having the above-mentioned constitution, the effect of enabling the formation of the cladding layer formed on the material by precisely controlling the thickness of the cladding layer formed on the surface of the cladding layer, irrespective of the moving direction of the laser beam or the material have.

1 is a view for explaining a conventional laser cladding process;
2 is a schematic view showing a laser cladding system according to an embodiment of the present invention;
3 is a side view of the laser cladding means shown in Fig.
4 is a side view of the processing means shown in Fig.
5A and 5B are operational states of a laser cladding system according to an embodiment of the present invention.
FIG. 6 is a schematic view showing a laser cladding system according to a modified embodiment of the present invention; FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 3 is a side view of the cladding means shown in FIG. 2; FIG. 4 is a side view of the processing means shown in FIG. 2; And FIG. 5B is an operational state diagram of a laser cladding system according to an embodiment of the present invention.

2 to 5B, a laser cladding system 100 according to an exemplary embodiment of the present invention includes a base plate 110, first and second moving frames 120 and 130, a laser cladding unit 140, A measuring means 150 and a processing means 160. [

The base plate 110 has a rectangular shape, and a material 10 to be clad-molded is seated on a predetermined position of the base plate 110.

 The first and second moving frames 120 and 130 are spaced apart from each other to be slidably moved on the base plate 110.

The laser cladding means 140 is provided on the first moving frame 120 and forms a cladding layer 18 on the surface of the workpiece 10 placed on the base plate 110, A cylinder 142 coupled to a rail 122 provided on an upper lower surface of the cylinder 142 and a support plate 144 coupled to an end of a cylinder rod 142a rotatable 360 degrees to the cylinder 142, A laser head 146 which irradiates the surface of the workpiece 10 with a laser beam and a cladding powder and an auxiliary gas which are provided on the support plate 144 at a predetermined distance from the laser head 146, And a cladding material supply member 148.

That is, while the cladding powder and the auxiliary gas are simultaneously supplied from the cladding material supply member 148 to the surface of the workpiece 10, the laser beam is emitted from the laser head 146 to melt the surface of the workpiece and the cladding powder, 18 are formed.

The measuring means 150 is installed on one side of the laser cladding means 140 to measure the thickness of the cladding layer 18, that is, the height deviation of the microscopic burr existing on the surface of the cladding layer.

The measuring unit 150 may be a 3D scanner or a CCD camera. The measuring unit 150 measures the thickness of the cladding layer in real time and compares the measured value with the first reference value. The cladding layer 150 18 are determined.

The machining means 160 is provided on the second moving frame 130 to process a microscopic burr present on the surface of the cladding layer formed on the workpiece 10 by an end mill to remove the cladding layer by the microscopic burr, So that a height deviation does not occur on the surface of the substrate.

When the height of the cladding layer is different from the input value (lower or higher), the cladding layer is processed by an end mill so that the height of the cladding layers is the same as the input value.

At this time, the processing means 160 includes a cylinder 162 coupled to the rail 132 provided on the upper lower surface of the second moving frame 130, and a cylinder rod 162a A main body 166 provided on the support plate 164 and an end mill 168 interchangeably mounted on the end of the main body 166. [

An automatic tool changer (not shown) is provided at a predetermined position on one side of the base plate 110 so as to automatically replace an end mill 168 that is replaceably installed at an end of the main body 166 of the processing means 160. [ ATC) 170, which enables the end mill suitable for the material of the cladding layer formed on the surface of the material 10 to be quickly replaced and used.

FIG. 6 is a schematic view showing a laser cladding system according to a modified embodiment of the present invention.

Referring to FIG. 6, a laser cladding system according to an exemplary embodiment of the present invention is similar to the laser cladding system of the present invention, except that the first and second slide frames 120 ', 130 The six-axis articulated robot 180 is installed on the upper surfaces of the first and second slide frames 120 'and 130', respectively. There is a difference in that the laser cladding means 140 and the processing means 160 are coupled to the end of the outer arm.

The laser cladding method using the laser cladding system as described above includes the steps of placing the workpiece 10 at a predetermined position of the base plate 110 and attaching the laser cladding means Forming a cladding layer (18) by melting the surface of the workpiece and the cladding powder by oscillating the laser beam while simultaneously supplying the cladding powder and the auxiliary gas to the surface of the workpiece (10) Measuring the thickness of the cladding layer using the measuring means 150 and processing the surface of the cladding layer by the processing means 160 so that the microscopic burr existing on the surface of the cladding layer formed on the surface of the workpiece 10 is removed And repeating the cladding layer forming step and the forming step until the cladding forming of the workpiece 10 is completed.

More specifically, after a cladding layer is formed on the surface of the base material 10 through the laser cladding means 140, the thickness of the cladding layer 18, that is, And the burrs present on the surface of the cladding layer are removed by the processing means 160 so that the height of the cladding layer due to the microscopic burr does not deviate The cladding layer having a desired shape can be formed on the work 10 by repeating the above-described processes.

Although the preferred embodiments of the present invention have been described with reference to the accompanying drawings, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit of the invention It can be understood that it is possible.

110; Base plate
120; The first movable frame
122; rail
130; The second moving frame
132; rail
140; Laser cladding means
142; cylinder
142a; Cylinder rod
144; Support plate
146; Laser head
148; Cladding material supply member
150; Measuring means
160; Processing means
162; cylinder
162a; Cylinder rod
164; Support plate
166; main body
168; End mill
170; Automatic tool changing means

Claims (5)

A base plate on which a material is placed at a predetermined position;
First and second moving frames spaced apart from each other on the base plate;
Laser cladding means provided on the first moving frame to form a cladding layer on a surface of the workpiece;
Measuring means installed on one side of the cladding means for measuring a thickness of the cladding layer; And
And a processing unit that is installed in the second moving frame and processes a microscopic burr present on a surface of the cladding layer into an end mill.
[2] The apparatus according to claim 1,
A cylinder coupled to a rail provided on an upper lower side of the first moving frame; a laser head mounted on a support plate coupled to an end of a cylinder rod provided in the cylinder, the laser head oscillating a laser beam on a surface of the work; And a cladding material supply member installed on the support plate at a predetermined distance from the laser head to simultaneously supply the cladding powder and the auxiliary gas to the surface of the workpiece.
The method according to claim 1,
Wherein the measuring means is one of a 3D scanning or a CCD camera.
The method according to claim 1,
Wherein an automatic tool changer (ATC) is installed at a predetermined position on one side of the base plate to automatically replace the end mill provided in the machining means.
A laser cladding method using the laser cladding system according to any one of claims 1 to 4,
Placing a material on a predetermined position of the base plate;
Forming a cladding layer by melting a surface of a workpiece and a cladding powder while supplying a cladding powder and an auxiliary gas to the surface of the workpiece simultaneously using laser cladding means provided in the first moving frame;
Measuring the thickness of the cladding layer using the measuring means;
Processing the surface of the cladding layer with the processing means to remove a minute burr present on the surface of the cladding layer formed on the surface of the workpiece; And
And repeating the cladding layer forming step and the processing step until the cladding formation of the workpiece is completed.
KR1020150149686A 2015-10-27 2015-10-27 laser cladding system and method of using the same KR20170048954A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107686989A (en) * 2017-07-21 2018-02-13 浙江工业大学 A kind of electromagnetic field regulation device for laser manufacture
CN109590678A (en) * 2018-11-12 2019-04-09 中国航天空气动力技术研究院 The production method and equipment of 3D printing composite space pressure vessel metal inner lining
CN110682099A (en) * 2019-10-10 2020-01-14 河北瑞兆激光再制造技术股份有限公司 Axle prosthetic devices under complicated stress condition
KR20220168078A (en) * 2021-06-15 2022-12-22 주식회사 코렌텍 Deviation Tolerance Correction Method for Using Additive Manufacturing
KR102507407B1 (en) * 2022-12-09 2023-03-08 터보파워텍(주) Fixture for thermal barrier coating of hot gas path parts by 3D printing laser cladding
CN116728001A (en) * 2023-08-16 2023-09-12 西南交通大学 High-integrity metal material surface processing method with gradient refinement of crystal grains

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107686989A (en) * 2017-07-21 2018-02-13 浙江工业大学 A kind of electromagnetic field regulation device for laser manufacture
CN109590678A (en) * 2018-11-12 2019-04-09 中国航天空气动力技术研究院 The production method and equipment of 3D printing composite space pressure vessel metal inner lining
CN110682099A (en) * 2019-10-10 2020-01-14 河北瑞兆激光再制造技术股份有限公司 Axle prosthetic devices under complicated stress condition
KR20220168078A (en) * 2021-06-15 2022-12-22 주식회사 코렌텍 Deviation Tolerance Correction Method for Using Additive Manufacturing
WO2022265327A1 (en) * 2021-06-15 2022-12-22 주식회사 코렌텍 Tolerance deviation correction method using lamination
KR102507407B1 (en) * 2022-12-09 2023-03-08 터보파워텍(주) Fixture for thermal barrier coating of hot gas path parts by 3D printing laser cladding
CN116728001A (en) * 2023-08-16 2023-09-12 西南交通大学 High-integrity metal material surface processing method with gradient refinement of crystal grains
CN116728001B (en) * 2023-08-16 2023-11-03 西南交通大学 High-integrity metal material surface processing method with gradient refinement of crystal grains

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