CN111319253A - Tail nozzle 3D printing process - Google Patents
Tail nozzle 3D printing process Download PDFInfo
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- CN111319253A CN111319253A CN202010149417.XA CN202010149417A CN111319253A CN 111319253 A CN111319253 A CN 111319253A CN 202010149417 A CN202010149417 A CN 202010149417A CN 111319253 A CN111319253 A CN 111319253A
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- printing
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
- B29C64/118—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/295—Heating elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/386—Data acquisition or data processing for additive manufacturing
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- 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
- B33Y10/00—Processes of additive manufacturing
-
- 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
- B33Y50/00—Data acquisition or data processing for additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/748—Machines or parts thereof not otherwise provided for
- B29L2031/749—Motors
Abstract
The invention discloses a 3D printing process of a tail nozzle, which comprises the following steps: s1, creating a data model of a tail nozzle in drawing software, and importing the data model into 3D printing software; s2, slicing the data model by the 3D printing software according to the set printing parameters to generate a printing track; the method comprises the following steps of analyzing the wire diameter, the workpiece thickness and the inner and outer wall contact ratio to obtain a theoretical layer height so as to set the layer height, and analyzing the printing speed and the fuse wire speed so as to set the printing speed and the fuse wire speed; s3, starting printing, enabling a printing nozzle to move along a scanning path of the data model, monitoring a printing process by an operator, paying attention to a forming state in real time, and adjusting printing parameters in time; wherein the heat source of the printing nozzle is welding arc; and S4, carrying out post-processing treatment on the printed and formed workpiece to obtain the tail nozzle. The invention has the characteristics of quick manufacture, time saving, cost reduction and the like.
Description
Technical Field
The invention relates to the field of 3D printing. More specifically, the invention relates to a 3D printing process of a tail nozzle.
Background
The conventional tail nozzle is manufactured by casting, so that the problems of long research and development period, serious material waste and the like exist, and the problems cannot be solved effectively. After the additive manufacturing technology is produced, the part is manufactured by utilizing the laser three-dimensional forming technology and the electron beam fuse deposition technology, compared with casting, the research and development manufacturing period of the part is greatly shortened by the two technologies, but equipment and manufacturing materials used by the two technologies are expensive, the manufacturing process requirement is high, the manufacturing cost of the workpiece is increased, the profit margin of an enterprise is reduced, and therefore the part is not suitable for mass production.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and/or disadvantages and to provide at least the advantages described hereinafter.
It is yet another object of the present invention to provide a 3D jet pipe printing process that is fast to manufacture, time efficient, and cost effective.
To achieve these objects and other advantages and in accordance with the purpose of the invention, a jet nozzle 3D printing process is provided, which comprises the steps of:
s1, creating a data model of a tail nozzle in drawing software, and importing the data model into 3D printing software;
s2, slicing the data model by the 3D printing software according to the set printing parameters to generate a printing track; analyzing the diameter of the wire, the thickness of the workpiece and the contact ratio of the inner wall and the outer wall to obtain a theoretical layer height so as to set the layer height, and analyzing the printing speed and the fuse wire speed so as to set the printing speed and the fuse wire speed;
s3, starting printing, enabling a printing nozzle to move along a scanning path of the data model, monitoring a printing process by an operator, paying attention to a forming state in real time, and adjusting printing parameters in time; wherein the heat source of the printing nozzle is welding arc;
and S4, carrying out post-processing treatment on the printed and formed workpiece to obtain the tail nozzle.
Preferably, the drawing software is conventional drawing modeling software such as SOLIDWORK, UG, or cadier.
Preferably, the adjustment is carried out in the printing process according to the proportional relation between the workpiece thickness and the wire diameter, so that no defect occurs at the joint of the inner wall and the outer wall when a layer is printed, the smooth transition is realized, and the theoretical layer height is obtained.
Preferably, the rod elongation is maintained during the actual printing process and can be modified by adjusting the wire feed speed and arc length when there is a change in rod elongation.
Preferably, the printing speed and the fusing speed are determined based on the formation of the molten pool during the observation of the fusing.
Preferably, the printing speed and the fusing speed are analyzed and adjusted to make the wire transition smooth, and the molten pool is elliptical.
Preferably, the arc length correction is increased to a positive value when the local position is too high during printing, and is adjusted to a negative value when the local position is too low during printing.
Preferably, in step S2, the set printing parameters include layer height, printing speed, outer wall speed, inner wall speed, starting height, acceleration, inner and outer wall contact ratio, maximum number of layers to be sliced, number of layers to be printed once, number of layers to be printed at bottom, height of first layer, weld width, number of outer wall welds, distance between arc extinguishes in advance, welding gun attitude, welding gun inclination, arc starting parameter, arc stopping parameter, wire feeding speed, arc length correction, pulse frequency, rod elongation, outer wall printing parameter, inner wall printing parameter, and gas feed in advance.
Preferably, in the step S2, the set printing parameters are layer height of 1.0-1.4mm, printing speed of 8-10mm/S, outer wall speed of 8-12mm/S, inner wall speed of 6-8mm/S, initial height of 50-100mm, acceleration of 50-100%, coincidence degree of inner and outer walls of 15%, maximum slice layer number of 500, single printing layer number of 1-3, bottom layer number of 1, first layer height of 3mm, welding seam width of 4mm, outer wall welding seam number of 1, advance arc extinguishing interval of 0-1mm, minimum arc extinguishing interval of 0-2mm, welding gun posture keeping fixed, welding gun inclination angle of 10 °, arc starting parameter of 130-145A, arc stopping parameter of 25-40A, wire feeding speed of 4.0-4.5mm/min, arc length correction of +10/-10, pulse frequency of 1.2-2.0, rod elongation of 10-15mm, and, The printing parameters of the outer wall are 4.3-4.7/min, the printing parameters of the inner wall are 4.0-4.5/min, and the air is fed in advance for 0.4-1 s.
The invention at least comprises the following beneficial effects:
1. the welding arc is used as a heat source to melt the wire, the wire is accumulated into required parts according to the printing track of the workpiece, and the printed tail nozzle can be formed at one time by controlling the heat input quantity and the printing parameters in the process.
2. The tail nozzle manufactured by the process can greatly shorten the research and development period of workpieces and reduce the time cost. Compared with the traditional processing mode, the method can save about 50% of raw material loss. The process can well control the heat input and the printing layer height, so that the printed workpiece can be molded at one time and is stable in molding.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic illustration of the jet nozzle configuration in accordance with an embodiment of the present invention;
fig. 2 illustrates a schematic view of the lack of overlap and collapse of the inner and outer walls.
Detailed Description
The present invention is described in further detail below to enable those skilled in the art to practice the invention with reference to the description.
Examples
As shown in fig. 1-2, a 3D printing process for a jet nozzle includes the following steps:
s1, creating a data model of a tail nozzle in drawing software, and importing the data model into 3D printing software;
s2, slicing the data model by the 3D printing software according to the set printing parameters to generate a printing track; analyzing the diameter of the wire, the thickness of the workpiece and the contact ratio of the inner wall and the outer wall to obtain a theoretical layer height so as to set the layer height, and analyzing the printing speed and the fuse wire speed so as to set the printing speed and the fuse wire speed;
s3, starting printing, enabling a printing nozzle to move along a scanning path of the data model, monitoring a printing process by an operator, paying attention to a forming state in real time, and adjusting printing parameters in time; wherein the heat source of the printing nozzle is welding arc;
and S4, carrying out post-processing treatment on the printed and formed workpiece to obtain the tail nozzle.
Based on the above embodiments, in one embodiment, the drawing software is conventional drawing modeling software such as SOLIDWORK, UG, cadier, or the like.
On the basis of the above embodiment, in one embodiment, adjustment is performed in the printing process according to the fact that the workpiece thickness and the wire diameter are in a direct proportional relation, so that no defect occurs at the joint of the inner wall and the outer wall when a layer is printed, the inner wall and the outer wall are in smooth transition, and the theoretical layer height is obtained.
On the basis of the above embodiments, in one embodiment, the rod elongation is maintained constant during the actual printing process, and when the rod elongation changes, the wire feed speed and arc length can be adjusted to correct the change.
On the basis of the above-described embodiments, in one embodiment, the printing speed and the fuse speed are determined according to the molding condition of the molten pool in the process of observing the fuse.
Based on the above embodiments, in one embodiment, the printing speed and the fuse speed are analyzed and adjusted to make the wire transition smooth, and the molten pool is elliptical. Influence on the forming of a printing process when the printing speed and the fuse wire speed are not properly matched, narrow molten pool forming and poor spreadability when the printing speed is high, workpieces cannot be piled and formed, and wires are piled when the printing speed is low, so that the printed workpieces collapse; when the fuse wire speed is too high, the molten pool collapses, the workpiece cannot be formed, and when the fuse wire speed is too low, the quantity of the filled wire material is insufficient, and the workpiece cannot be stacked and formed.
On the basis of the above embodiment, in one embodiment, the arc length correction is increased to a positive value when the local position is too high during printing, and the arc length correction is adjusted to a negative value when the local position is too low during printing. Stress deformation can exist in the printing process, so that the height difference exists on the surface of a printed workpiece, and the height difference caused by the stress deformation can be filled by adjusting the arc length parameter.
On the basis of the above embodiment, in one embodiment, the set printing parameters are 1.0-1.4mm of layer height, 8-10mm/s of printing speed, 8-12mm/s of outer wall speed, 6-8mm/s of inner wall speed, 50-100mm of starting height, 50-100% of acceleration, 15% of contact ratio of inner wall and outer wall, 500% of maximum slice layer number, 1-3% of single printing layer number, 1% of bottom layer number, 3mm of first layer height, 4mm of welding seam width, 1% of outer wall welding seam number, 0-1mm of early arc extinguishing interval, 0-2mm of minimum arc extinguishing interval, fixed welding gun posture, 10% of welding gun inclination angle, 130 + 145A of arc starting parameter, 25-40A of arc stopping parameter, 4.0-4.5mm/min of wire feeding speed, 10/-10 of arc length correction, 1.2-2.0 of pulse frequency, The rod elongation is 10-15mm, the outer wall printing parameter is 4.3-4.7/min, the inner wall printing parameter is 4.0-4.5/min, and the advanced air supply is 0.4-1 s.
According to the method provided by the invention, the tail nozzle can be printed at one time without stopping in the midway, the collapse problem can not occur in the printing process, and the printed tail nozzle is processed as shown in figure 1.
While embodiments of the invention have been disclosed above, it is not intended to be limited to the uses set forth in the specification and examples. It can be applied to all kinds of fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. Therefore, the invention is not to be limited to the specific details and embodiments shown and described herein, without departing from the general concept defined by the appended claims and their equivalents.
Claims (9)
1. The 3D printing process of the tail nozzle is characterized by comprising the following steps of:
s1, creating a data model of a tail nozzle in drawing software, and importing the data model into 3D printing software;
s2, slicing the data model by the 3D printing software according to the set printing parameters to generate a printing track; analyzing the diameter of the wire, the thickness of the workpiece and the contact ratio of the inner wall and the outer wall to obtain a theoretical layer height to set a layer height parameter, and analyzing the printing speed and the fuse wire speed to set the printing speed and the fuse wire speed;
s3, starting printing, enabling a printing nozzle to move along a scanning path of the data model, monitoring a printing process by an operator, paying attention to a forming state in real time, and adjusting printing parameters in time; wherein the heat source of the printing nozzle is welding arc;
and S4, carrying out post-processing treatment on the printed and formed workpiece to obtain the tail nozzle.
2. The jet nozzle 3D printing process as claimed in claim 1, wherein the drawing software is SOLIDWORK, UG or cadier.
3. The 3D printing process of the exhaust nozzle according to claim 1, wherein adjustment is performed in the printing process according to the fact that the workpiece thickness and the wire diameter are in a direct proportion relation, so that no defect occurs at the joint of the inner wall and the outer wall when a layer is printed, smooth transition occurs, and the theoretical layer height is obtained.
4. The jet nozzle 3D printing process according to claim 1, wherein the rod elongation is maintained constant during the actual printing process, and when the rod elongation changes, the wire feed speed and arc length can be adjusted to correct the change.
5. The jet nozzle 3D printing process according to claim 1, wherein the printing speed and the fusing speed are determined according to the formation condition of a molten pool in the process of observing the fusing.
6. The jet nozzle 3D printing process according to claim 5, wherein the printing speed and the fuse speed are analyzed and adjusted to make the wire transition smooth, and the molten pool is elliptical.
7. The 3D printing process of the exhaust nozzle according to claim 1, wherein the arc length correction is increased to a positive value when the local position is too high during printing, and is adjusted to a negative value when the local position is too low during printing.
8. The 3D printing process of the exhaust nozzle according to claim 1, wherein in the step S2, the set printing parameters comprise layer height, printing speed, outer wall speed, inner wall speed, initial height, acceleration, contact ratio of inner wall and outer wall, maximum slicing layer number, single printing layer number, bottom layer number, first layer height, welding seam width, outer wall welding seam number, advanced arc blowout interval, minimum arc blowout interval, welding gun posture, welding gun inclination angle, arc starting parameter, arc stopping parameter, wire feeding speed, arc length correction, pulse frequency, rod elongation, outer wall printing parameter, inner wall printing parameter and advanced air feeding.
9. The 3D printing process of the exhaust nozzle according to claim 8, wherein in the step S2, the set printing parameters include layer height of 1.0-1.4mm, printing speed of 8-10mm/S, outer wall speed of 8-12mm/S, inner wall speed of 6-8mm/S, starting height of 50-100mm, acceleration of 50-100%, inner and outer wall contact ratio of 15%, maximum slicing layer number of 500, single printing layer number of 1-3, bottom layer number of 1, head layer height of 3mm, welding seam width of 4mm, outer wall welding seam number of 1, advanced arc blowout interval of 0-1mm, minimum arc blowout interval of 0-2mm, fixed welding gun posture, welding gun inclination angle of 10 degrees, arc starting parameter of 130-shaped materials 145A, arc closing parameter of 25-40A, wire feeding speed of 4.0-4.5mm/min, arc length correction of +10/-10, Pulse frequency is 1.2-2.0, rod elongation is 10-15mm, outer wall printing parameter is 4.3-4.7/min, inner wall printing parameter is 4.0-4.5/min, and advanced air supply is 0.4-1 s.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010149417.XA CN111319253A (en) | 2020-03-04 | 2020-03-04 | Tail nozzle 3D printing process |
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| CN202010149417.XA CN111319253A (en) | 2020-03-04 | 2020-03-04 | Tail nozzle 3D printing process |
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| CN111319253A true CN111319253A (en) | 2020-06-23 |
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Application publication date: 20200623 |