CN118060862B

CN118060862B - Guider additive machining method and guider

Info

Publication number: CN118060862B
Application number: CN202410501339.3A
Authority: CN
Inventors: 汪洋冰; 郭朦; 梁小强
Original assignee: AVIC Jincheng Nanjing Engineering Institute of Aircraft Systems
Current assignee: AVIC Jincheng Nanjing Engineering Institute of Aircraft Systems
Priority date: 2024-04-25
Filing date: 2024-04-25
Publication date: 2024-06-25
Anticipated expiration: 2044-04-25
Also published as: CN118060862A

Abstract

The invention relates to the technical field of additive manufacturing, in particular to a guide additive processing method and a guide. The method comprises the steps of obtaining a three-dimensional model of the guider based on the requirement of the guider; the three-dimensional model comprises a first shell unit, a second shell unit, an inner core shell unit, a vent hole and a guide vane of the guide device; acquiring a first processed body of the guide through additive processing based on the three-dimensional model; and carrying out post-treatment on the first processing body to obtain the guide. Thus, the problem that the vent hole of the guide is difficult to process is solved.

Description

Guider additive machining method and guider

Technical Field

The invention relates to the technical field of additive manufacturing, in particular to a guide additive processing method and a guide.

Background

The guider is a core component in the auxiliary power device of the aircraft, is used for rectifying high-temperature and high-pressure fuel gas after being combusted in the combustion chamber, and guiding the fuel gas to flow to control the rotating speed and power output of the turbine, and is required to bear the high-temperature and high-pressure fuel gas when in operation. The guide generally consists of an outer shell, guide vanes and an inner shell. The inner shell is disposed within the interior chamber of the outer shell. One end of the guide vane is fixedly connected with the outer shell, and the other end is fixedly connected with the inner shell. In order to simplify the sealing structure of the guide, a flow path required for flowing sealing gas (high-pressure gas) is integrated into the guide vane, and the guide may be provided with a vent hole. The vent holes can sequentially penetrate through the outer shell, the guide vanes and the inner shell and are used for introducing external high-pressure gas to seal the cavity of the inner shell.

When the guide is manufactured by the traditional processing method, single parts are manufactured by casting and machining respectively, and then the outer shell, the guide vane and the inner shell are assembled into a whole by designing a specific connecting structure and bolts. However, when the guide device is assembled, the installation clearance between the guide vane and the outer shell and the installation clearance between the guide vane and the inner shell are easy to cause air flow loss, the tightness is poor, and the turbine performance is influenced; in addition, because the working temperature of the guide is high, direct precision casting forming is generally adopted for the surface related to the main runner, the casting difficulty of the vent holes is high (ceramic cores are arranged at the vent holes, and the ceramic cores are removed by adopting high-temperature alkali liquor after casting, and because the diameter of the vent holes is small and the length is long, the difficulty of manufacturing the vent holes of the guide by the method is high), the design of the guide die is complex, and the produced guide is low in qualification rate, long in production period and high in manufacturing cost.

Disclosure of Invention

The invention provides a guide material-increasing processing method and a guide for solving the problem that a vent hole of the guide is difficult to process.

In a first aspect, the present invention provides a method of pilot additive processing, the method comprising:

Step S11, based on the requirements of a guider, acquiring a three-dimensional model of the guider; wherein the three-dimensional model comprises a first shell unit, a second shell unit, an inner core shell unit, a vent hole and a guide vane of the guide device; one end of the first shell unit is fixedly connected with one end of the outer side wall of the second shell unit; the inner core shell unit is arranged in the hollow cavity of the second shell unit; the guide vane is arranged in the hollow cavity between the inner core shell unit and the second shell unit; one end of the guide vane is fixedly connected with the second shell unit, and the other end of the guide vane is fixedly connected with the inner core shell unit; the vent holes sequentially penetrate through the second shell unit, the guide vane and the inner core shell unit;

step S12, acquiring a first processed body of the guide through additive processing based on the three-dimensional model;

and step S13, performing post-treatment on the first processing body to obtain the guide.

In some embodiments, the demand for the pilot includes gas flow of the pilot, inlet pressure of the pilot, internal pressure of the vent, sustainable temperature of the first shell unit, sustainable temperature of the second shell unit, sustainable temperature of the inner core shell unit, sustainable temperature of the guide vane; the guide structure material is K438 and K418 alloy.

In some embodiments, the step S12 includes:

step S121, filling the 3D printing equipment with additive materials based on the three-dimensional model;

Step S122, printing the base of the first shell unit based on the completion of filling by the 3D printing equipment;

Step S123, printing is started based on the base, and printing of the supporting component is started; the support assembly comprises a hollowed-out unit and a solid unit; the hollowed-out unit comprises a second support body; the entity unit comprises a first column body and a second column body; the base, the first column body, the second support body and the second column body are sequentially arranged at intervals along the radial direction of the base; the first column is used for supporting the second shell unit; the second support body is used for supporting the guide vane; the second column is used for supporting the inner core shell unit;

step S124, based on the completion of the printing of the base, sequentially printing a first ring body and a second ring body of the first shell unit; wherein the first housing unit further comprises the first ring body and the second ring body; the base, the first ring body and the second ring body are sequentially and fixedly connected along the axial direction of the base; the hollowed-out unit further comprises a first support body; the first support body is used for supporting the second ring body;

Step S125, printing a first half-processed body based on the first shell unit being printed to a first set range; the first half-machined body comprises the guide vane, the second shell unit, the inner core shell unit and the vent hole.

In some embodiments, step S125 includes:

Step S1251, printing the second housing unit based on the first housing unit printing to a first set value; wherein the first setting range includes the first setting value; the second shell unit comprises a third ring body, a fourth ring body and a fifth ring body; one end of the third ring body is fixedly connected with one end of the first column body, and the other end of the third ring body is fixedly connected with one end of the fourth ring body; the outer side wall of the third ring body, which is close to one end of the first cylinder, is fixedly connected with the second ring body; the inner side wall of the third ring body, which is close to one end of the first cylinder, is fixedly connected with one end of the guide vane; one end of the fourth ring body far away from the third ring body is fixedly connected with one end of the fifth ring body; the hollowed-out unit further comprises a fifth support body; the fifth support is used for supporting the fourth ring body and the fifth ring body;

Step S1252, printing a second half-processed body based on the second housing unit printing to a second set range; wherein the second half-finished body includes the guide vane, the inner core housing unit, the vent hole.

In some embodiments, step S1252 includes:

Step S12521, printing the guide vane and the inner core housing unit based on the second housing unit printing to a second set value; wherein the second setting range includes the second setting value; the inner core shell unit comprises a first inner ring, a second inner ring, a third inner ring and a fourth inner ring; one end of the first inner ring is fixedly connected with one end of the second column, and the other end of the first inner ring is fixedly connected with one end of the second inner ring; the outer side wall of the first inner ring, which is close to one end of the second cylinder, is fixedly connected with one end of the guide vane, which is far away from the third ring body; one end of the second inner ring far away from the first inner ring is fixedly connected with the third inner ring; the outer side wall of the fourth inner ring is fixedly connected with the inner side wall of the first inner ring; the hollowed-out unit further comprises a third support and a fourth support; the entity unit also comprises a third column body and a fourth column body; the third support body and the third column body are used for supporting the fourth inner ring together; the fourth support body and the fourth column body are jointly used for supporting the third inner ring;

step S12522, printing the vent hole based on the second housing unit printing to a third set value; wherein the second setting range further includes the third setting value; the vent holes sequentially penetrate through the third ring body, the guide vanes, the first inner ring and the fourth inner ring;

And step S12523, printing the second shell unit, the guide vane and the inner core shell unit until the printing is finished based on the vent hole.

In some embodiments, the step S13 includes:

step S131, cleaning the first processing body to obtain a first body to be processed;

Step S132, performing heat treatment on the first body to be treated to obtain a second body to be treated;

and step S133, performing surface treatment on the second body to be treated to obtain the guide.

In some embodiments, the heat treatment in step S132 includes:

Step S1321, performing stress relief treatment on the first object to be treated to obtain a stress relief object; the destressing treatment comprises the steps of preserving the temperature of the first body to be treated under the first temperature condition for a first time, and slowly cooling to a second temperature along with the furnace;

Step S1322, performing hot isostatic pressing treatment on the destressing body to obtain a hot isostatic pressing body; wherein the hot isostatic pressing treatment comprises the steps of preserving heat and pressure of the destressing body for a second time under the conditions of a third temperature and a first pressure, and then slowly cooling to the second temperature along with a furnace;

Step S1323, performing solid solution treatment on the hot isostatic pressing body to obtain a solid solution; wherein the solid solution treatment comprises the steps of preserving the heat of the hot isostatic pressing body for a third time under a fourth temperature condition, and then filling inert gas to cool the hot isostatic pressing body to a fifth temperature;

Step S1324, aging the solid solution to obtain a second body to be treated; wherein the aging treatment comprises the steps of preserving the solid solution for a fourth time under a sixth temperature condition, and then charging inert gas to cool the solid solution to a fifth temperature.

In some embodiments, the first temperature is greater than or equal to 540 ℃ and less than or equal to 560 ℃; the second temperature is less than 200 ℃; the third temperature is 1220 ℃ or higher and 1240 ℃ or lower; the fourth temperature is greater than or equal to 1090 ℃ and less than or equal to 1110 ℃; the fifth temperature is less than 80 ℃; the sixth temperature is greater than or equal to 845 ℃ and less than or equal to 855 ℃; the first pressure is more than or equal to 155MPa and less than 165MPa; the first time is greater than or equal to 950min and less than or equal to 970min; the second time is more than or equal to 230min and less than or equal to 250min; the third time is more than or equal to 115min and less than or equal to 125min; the fourth time is 1430min or more and 1450min or less.

In some embodiments, the surface treatment in step S133 includes:

step S1331, carrying out support removal treatment on the second to-be-treated body; wherein the de-bracing process comprises separating the second body to be processed from the 3D printing apparatus and removing the support assembly;

step S1332, carrying out finish machining treatment on the second body to be treated to obtain the guide; wherein the surface roughness of the second body to be processed after finishing the finishing treatment is less than Ra3.2.

In a second aspect, the present invention provides a guide for use in the guide additive processing method of any of the embodiments described above, the guide comprising:

the first shell unit is in an annular structure;

The second shell unit is in an annular structure; one end of the first shell unit is fixedly connected with one end of the outer side wall of the second shell unit;

The inner core shell unit is arranged in the hollow cavity of the second shell unit;

The guide vane is arranged in the hollow cavity between the inner core shell unit and the second shell unit; one end of the guide vane is fixedly connected with the second shell unit, and the other end of the guide vane is fixedly connected with the inner core shell unit;

The vent holes penetrate through the second shell unit, the guide vane and the inner core shell unit in sequence.

In some embodiments, the first housing unit includes a base, a first ring, a second ring; the base, the first ring body and the second ring body are sequentially and fixedly connected;

the second shell unit comprises a third ring body, a fourth ring body and a fifth ring body; one end of the second ring body far away from the first ring body is fixedly connected with one end of the outer side wall of the third ring body; the third ring body, the fourth ring body and the fifth ring body are sequentially and fixedly connected; the inner side wall of the third ring body, which is close to one end of the second ring body, is fixedly connected with the guide vane;

The inner core shell unit comprises a first inner ring, a second inner ring, a third inner ring and a fourth inner ring; the outer side wall close to one end of the first inner ring is fixedly connected with the guide vane; the first inner ring, the second inner ring and the third inner ring are sequentially and fixedly connected; the outer side wall of the fourth inner ring is fixedly connected with the inner side wall of the first inner ring.

In order to solve the problem of difficult processing of the vent hole of the guide, the invention has the following advantages:

According to the vent hole processing requirement of the guide, a corresponding three-dimensional model is established, and the integrally formed guide is manufactured in an additive processing mode, so that the structural strength and the tightness of the guide can be enhanced while the light weight is realized, the pneumatic efficiency is improved, the manufacturing period is greatly shortened, and the overall manufacturing cost is reduced. The vent holes sequentially penetrate through the second shell unit, the guide vane and the inner core shell unit of the guide device, so that high-pressure gas can be introduced from the outside to seal the relatively low-pressure environment in the turbine when the subsequent guide device guides the gas flow, and the gas flow is prevented from being disturbed.

Drawings

FIG. 1 illustrates a schematic diagram of a pilot additive processing method of an embodiment;

FIG. 2 shows a schematic view of a first embodiment of a guide;

FIG. 3 shows a schematic view of a second embodiment of a guide;

FIG. 4 shows a schematic view of a third embodiment of a guide;

FIG. 5 shows a schematic A-A of the guide of the embodiment of FIG. 4;

FIG. 6 shows a schematic view of a fourth embodiment of a guide;

FIG. 7 shows a schematic B-B cross-section of the guide of the embodiment of FIG. 6;

FIG. 8 shows a schematic C-C section view of the guide of the embodiment of FIG. 6;

FIG. 9 illustrates a guide assembly schematic of an embodiment;

Fig. 10 shows a schematic view of a pilot assembly portion of an embodiment.

Reference numerals: 01 a guide; 11 a first housing unit; a 111 base; 112 a first ring body; 113 a second ring body; a second housing unit 12; 121 a third ring body; 122 a fourth ring body; 123 fifth ring body; 13 an inner core housing unit; 131 a first inner ring; 132 a second inner ring; 133 a third inner ring; 134 a fourth inner ring; 14 vent holes; 15 guide vanes; 02 a support assembly; 21 hollow units; 211 a first branch; 212 a second branch; 213 third branch; 214 fourth branch; 215 a fifth branch; 22 entity units; 221 a first column; 222 second column; 223 third column; 224 a fourth column; 03 assembling components; 31 turbine shaft; 32 sealing rings; 33 bushings; 34 turbine blades.

Detailed Description

The disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those of ordinary skill in the art to better understand and thus practice the present disclosure, and are not meant to imply any limitation on the scope of the present disclosure.

As used herein, the term "comprising" and variants thereof are to be interpreted as meaning "including but not limited to" open-ended terms. The term "based on" is to be interpreted as "based at least in part on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment. The term "another embodiment" is to be interpreted as "at least one other embodiment". The terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "transverse", "longitudinal", etc. refer to an orientation or positional relationship based on that shown in the drawings. These terms are only used to better describe the present application and its embodiments and are not intended to limit the scope of the indicated devices, elements or components to the particular orientations or to configure and operate in the particular orientations. Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the present application will be understood by those of ordinary skill in the art according to the specific circumstances. Furthermore, the terms "mounted," "configured," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances. Furthermore, the terms "first," "second," and the like, are used primarily to distinguish between different devices, elements, or components (the particular species and configurations may be the same or different), and are not used to indicate or imply the relative importance and number of devices, elements, or components indicated. Unless otherwise indicated, the meaning of "a plurality" is two or more.

The embodiment discloses a method for additive processing of a guide 01, as shown in fig. 1, which may include:

step S11, based on the requirement of the guider 01, acquiring a three-dimensional model of the guider 01; wherein the three-dimensional model comprises a first shell unit 11, a second shell unit 12, an inner core shell unit 13, a vent hole 14 and a guide vane 15 of the guide device 01; one end of the first shell unit 11 is fixedly connected with one end of the outer side wall of the second shell unit 12; the inner core housing unit 13 is disposed within the hollow cavity of the second housing unit 12; the guide vane 15 is disposed in the hollow cavity between the inner core housing unit 13 and the second housing unit 12; one end of the guide vane 15 is fixedly connected with the second shell unit 12, and the other end is fixedly connected with the inner core shell unit 13; the vent hole 14 penetrates through the second shell unit 12, the guide vane 15 and the inner core shell unit 13 in sequence;

step S12, acquiring a first processed body of the guide 01 through additive processing based on the three-dimensional model;

In step S13, the first processed body is post-processed to obtain the guide 01.

In this embodiment, the guide 01 may be used to guide the flow of high temperature and high pressure gas generated by the combustion of fuel in the aircraft engine to the turbine blade 34 and rotate the turbine blade 34. Therefore, the requirements for structural strength, high temperature resistance and sealing effect of the guide 01 are high. The guide 01 can be integrally manufactured by adopting a 3D printing mode, and the structure of the guide 01 is optimized and reconstructed, so that the light weight is realized, and meanwhile, the structural strength of the guide 01 is ensured. As shown in fig. 1, the additive processing method of the guide 01 includes steps S11 to S13, and the following may describe the above steps in detail:

In step S11, according to the requirements of the director 01, the distribution of the materials of the director 01 is changed by using an approximation and optimization algorithm under a given constraint condition through three-dimensional software, and topology optimization is performed on each part of the director 01, so that a three-dimensional model of the director 01 can be obtained, and the director 01 can be conveniently printed by a subsequent 3D printing device. As shown in fig. 2 and 3, the three-dimensional model includes a first casing unit 11, a second casing unit 12, a core casing unit 13, a vent hole 14, and a guide vane 15 of the guide 01. The first housing unit 11 may have a ring shape, and one end thereof may be fixedly connected with one end of the outer sidewall of the second housing unit 12. The core housing unit 13 may be disposed in the hollow cavity of the second housing unit 12, and the core housing unit 13 may be annular and disposed at a distance from the second housing unit 12. The center axis of the core housing unit 13 may coincide with the center axis of the second housing unit 12, ensuring coaxiality of the molded guide 01. The guide vane 15 may be disposed in the hollow cavity between the core housing unit 13 and the second housing unit 12. One end of the guide vane 15 is fixedly connected with the second housing unit 12, and the other end is connected with the inner core housing unit 13, which may be disposed at intervals around the outer circumferential wall of the inner core housing unit 13 and inclined at a certain angle in the circumferential direction of the inner core housing unit 13, so that the gas flowing from the engine combustion chamber into the guide 01 may be rectified and guided. The vent hole 14 may sequentially penetrate through the second housing unit 12, the guide vane 15, and the inner core housing unit 13, so that the high-pressure gas for sealing can directly enter the inner core housing unit 13 through the vent hole 14, the flow path of the high-pressure gas is reduced, and the sealing performance of the guide 01 is ensured to improve the aerodynamic efficiency. In other embodiments, as shown in fig. 9 and 10, the guide 01 may be sleeved on the assembly 03, and the assembly 03 may include the turbine shaft 31, the seal ring 32, the bushing 33, and the turbine blade 34. The circumferential side wall of the turbine shaft 31 may be movably connected with the turbine blades 34 such that the gas flowing through the guide vanes 15 may push the turbine blades 34 to rotate around the turbine shaft 31. The seal ring 32 may be fitted over one end of the turbine shaft 31 near the inner core housing unit 13, and the outer circumferential side thereof may be provided in a zigzag shape so as to block the gas outside the inner core housing unit 13 from entering the inner chamber thereof. One end side surface of the bushing 33 may be interference-fitted with one end of the inner core housing unit 13 near the turbine blade 34, and the other end surface may be clearance-fitted with the outer peripheral side of the seal ring 32. When the external high-pressure gas enters the inner cavity of the inner core housing unit 13 through the vent hole 14, the high-pressure gas can be matched with the sealing ring 32 and the bushing 33 to form a gas seal, so that the gas flowing through the first housing unit 11 and the second housing unit 12 can be prevented from entering the inner core housing unit 13, and the pneumatic efficiency is improved.

In step S12, the three-dimensional model obtained by the three-dimensional software may be imported into a 3D printing apparatus, so as to obtain the first processed body of the guide 01 by means of additive processing. The guide 01 is manufactured by adding metal powder materials layer by layer in the additive processing, so that the production weight of the guide 01 can be effectively controlled, and the purpose of light weight is achieved. As shown in fig. 2, the guide 01 is easy to shrink and deform due to thinner wall thickness in the printing and subsequent heat treatment processes, so that the first processing body of the guide 01 can be provided with a supporting component 02, and the supporting component 02 can support the structure of the auxiliary guide 01 to print and form, so that the guide 01 is prevented from deforming in the printing process.

In step S13, after the printing of the first processing body of the guide 01 is completed, the first processing body may be subjected to post-processing, such as surface cleaning, heat treatment, removal of the supporting component 02, finishing, and the like, so as to obtain the guide 01, realize integrated molding of the guide 01, and reduce the production cycle of the guide 01.

In some embodiments, the requirements of the pilot 01 include the gas flow of the pilot 01, the inlet pressure of the pilot 01, the internal pressure of the vent 14, the affordable temperature of the first housing unit 11, the affordable temperature of the second housing unit 12, the affordable temperature of the inner core housing unit 13, the affordable temperature of the guide vane 15; the structural material of the guide device 01 is K438 and K418 alloy.

In this embodiment, in order to topologically optimize the three-dimensional model of the director 01, the three-dimensional software needs to take the requirements of the director 01 as boundary conditions. The requirements of the pilot 01 may include the gas flow of the pilot 01, the inlet pressure of the pilot 01, the internal pressure of the vent 14, the affordable temperature of the first housing unit 11, the affordable temperature of the second housing unit 12, the affordable temperature of the core housing unit 13, the affordable temperature of the guide vanes 15. For example, the gas flow rate of the guide 01 under the design condition may be 1kg/h, the inlet pressure of the guide 01 may be 200kPa, the internal pressure of the vent hole 14 may be 600kPa, the affordable temperature of the first housing unit 11, the affordable temperature of the second housing unit 12, the affordable temperature of the core housing unit 13, and the affordable temperature of the guide vane 15 may be 800 ℃, so that the structural wall thickness of the guide 01 may be reduced to achieve light weight while ensuring the structural strength of the guide 01, so that the structure of the guide 01 is optimized to improve the aerodynamic efficiency. The structural materials selected for printing the guide device 01 can be K438 and K418 alloy.

In some embodiments, step S12 includes:

step S121, filling additive materials into the 3D printing equipment based on the three-dimensional model;

Step S122, printing the base 111 of the first housing unit 11 based on the completion of filling by the 3D printing apparatus;

Step S123, printing is started based on the base 111, and printing of the support member 02 is started; the supporting component 02 comprises a hollowed-out unit 21 and a solid unit 22; the hollow unit 21 comprises a second support 212; the entity unit 22 includes a first column 221 and a second column 222; the base 111, the first column 221, the second support 212, and the second column 222 are sequentially arranged at intervals along the radial direction of the base 111; the first column 221 is for supporting the second housing unit 12; the second support 212 is used for supporting the guide vane 15; the second column 222 is for supporting the core housing unit 13;

step S124, printing the first ring body 112 and the second ring body 113 of the first housing unit 11 in sequence based on the printing completion of the base 111; wherein, the first housing unit 11 further comprises a first ring body 112 and a second ring body 113; the base 111, the first ring body 112 and the second ring body 113 are fixedly connected in sequence along the axial direction of the base 111; the hollow unit 21 further comprises a first support 211; the first support 211 is used for supporting the second ring 113;

Step S125 of printing the first half processed body based on the first housing unit 11 being printed to the first set range; the first half processed body comprises a guide vane 15, a second shell unit 12, an inner core shell unit 13 and a vent hole 14.

In this embodiment, the step S12 may include steps S121 to S125. The above steps may be described in detail below:

step S121, slicing and guiding the three-dimensional model into the 3D printing device according to the three-dimensional model of the guide 01 generated by the three-dimensional software, and filling the 3D printing device with the corresponding additive material, so as to facilitate the subsequent printing of the guide 01. In other embodiments, the 3D printing device may include a doctor blade, a laser, a storage cavity, a substrate. The storage cavity is used for storing additive materials, the scraper can evenly lay the additive materials in the storage cavity on the substrate, and the laser can scan and print the additive materials according to a slicing path of a three-dimensional model set by the 3D printing equipment, so that the guider 01 can be printed layer by layer.

In step S122, after filling the additive material into the 3D printing apparatus to ensure that the material required for printing is sufficient, printing of the base 111 of the first housing unit 11 may be started on the substrate. As shown in fig. 4 and 5, since the guide 01 has a central symmetrical structure, the central axis of the guide 01 may be disposed parallel to the printing direction in order to ensure the forming quality and uniformity of the guide vane 15. Meanwhile, in order to reduce the supporting amount of the supporting component 02 and the subsequent removing treatment of the supporting component 02, the guide 01 can be placed and printed according to the principle of 'big-end-up'.

In step S123, when the laser of the 3D printing apparatus starts to print the base 111, the printing of the support component 02 on the substrate can be started, so as to ensure that the support component 02 provides a supporting force for the structure of the guide 01, and avoid deformation during the subsequent molding of the guide 01. As shown in fig. 5, the support component 02 may include a hollow unit 21 and a solid unit 22. The hollow unit 21 may be annular, and its cross section may be a square grid structure. The solid unit 22 may have a ring shape, and a cross section thereof may have a solid cylindrical shape. This ensures the supporting strength of the supporting member 02. The hollow unit 21 may include a second support 212, and the entity unit 22 may include a first column 221 and a second column 222. The base 111, the first column 221, the second column 212, and the second column 222 may be sequentially disposed at intervals along a radial direction of the base 111 (i.e., a horizontal direction as shown in fig. 5). The first column 221 may be used to support the second housing unit 12, and one end thereof may be fixedly connected to the substrate of the 3D printing apparatus and the other end thereof may be fixedly connected to one end of the second housing unit 12. The second support 212 may be used for supporting the guide vane 15, one end of which may be fixedly connected to the substrate of the 3D printing apparatus, and the other end of which is fixedly connected to a side of the guide vane 15 near the base 111. The second column 222 may be used to support the core-housing unit 13, and one end thereof may be fixedly connected to the substrate of the 3D printing apparatus, and the other end thereof is fixedly connected to one end of the core-housing unit 13. In other embodiments, the end of the hollow unit 21 near the connection with the guide 01 may be provided with trapezoidal saw teeth, and the end of the solid unit 22 near the connection with the guide 01 may be provided with trapezoidal saw teeth, so as to facilitate removal of the subsequent support component 02.

In step S124, when the laser finishes printing on the base 111 of the first housing unit 11, the first ring member 112 and the second ring member 113 of the first housing unit 11 may be printed in sequence. As shown in fig. 5, the first housing unit 11 may further include a first ring body 112, a second ring body 113. The base 111, the first ring body 112, and the second ring body 113 may be sequentially and fixedly connected along an axial direction (i.e., a vertical direction as shown in fig. 5) of the base 111. As shown in fig. 5, the hollowed-out unit 21 may further include a first support body 211, where the first support body 211 may be used for supporting the second ring body 113, one end of the first support body may be fixedly connected to an outer sidewall near one end of the first cylinder 221, and the other end of the first support body is fixedly connected to an inner sidewall of the second ring body 113. When the laser prints the first ring body 112 to a certain height (i.e. the set height of the lowest point at the joint of the first support body 211 and the first column body 221 is the same), the first support body 211 also starts to print, so that the second ring body 113 is supported for printing.

In step S125, when the first housing unit 11 is printed to the first set range, the laser starts printing the first half of the processed body (i.e., as shown in fig. 5, the first housing unit 11, the guide vane 15, the second housing unit 12, the core housing unit 13, the vent hole 14 of the guide 01 are each different in height position in the vertical direction, when the laser prints the first housing unit 11 at the same print height as the lowest point of the set positions of the other components of the guide 01, the corresponding components may start printing). The first half of the working body may comprise guide vanes 15, a second shell unit 12, a core shell unit 13, and ventilation holes 14.

In some embodiments, step S125 includes:

Step S1251, printing the second casing unit 12 based on the first casing unit 11 printing to the first setting value; wherein the first setting range comprises a first setting value; the second housing unit 12 includes a third ring 121, a fourth ring 122, and a fifth ring 123; one end of the third ring body 121 is fixedly connected with one end of the first cylinder 221, and the other end is fixedly connected with one end of the fourth ring body 122; the outer side wall of the third ring body 121, which is close to one end of the first cylinder 221, is fixedly connected with the second ring body 113; the inner side wall of the third ring body 121 near one end of the first cylinder 221 is fixedly connected with one end of the guide vane 15; one end of the fourth ring body 122 far away from the third ring body 121 is fixedly connected with one end of the fifth ring body 123; the hollow unit 21 further comprises a fifth support 215; the fifth support 215 is used for supporting the fourth ring 122 and the fifth ring 123;

Step S1252, printing the second half-processed body based on the printing of the second housing unit 12 to the second set range; the second half-processed body comprises a guide vane 15, an inner core shell unit 13 and a vent hole 14.

In the present embodiment, step S125 may include step S1251 and step S1252. The above steps may be described in detail below:

In step S1251, when the first housing unit 11 prints to the first set value, the laser starts printing the second housing unit 12 (i.e., when the print height of the first ring body 112 of the first housing unit 11 is the same as the lowest point height of the set position of the second housing unit 12, printing of the second housing unit 12 is started). The first setting range may include a first setting value. As shown in fig. 5, the second housing unit 12 may include a third ring 121, a fourth ring 122, and a fifth ring 123. One end of the third ring body 121 may be fixedly connected with one end of the first cylinder 221, and the other end may be fixedly connected with one end of the fourth ring body 122. The outer sidewall of the end of the third ring 121 near the first cylinder 221 may be fixedly connected to the end of the second ring 113 far from the first ring 112. The inner sidewall of the third ring 121 near one end of the first cylinder 221 may be fixedly connected to one end of the guide vane 15. One end of the fourth ring 122 far from the third ring 121 may be fixedly connected with one end of the fifth ring 123. As shown in fig. 5, the hollowed out unit 21 may further include a fifth support 215, and the fifth support 215 may be used to support the fourth ring 122 and the fifth ring 123. One end of the fifth support 215 may be fixedly connected to one end of the third ring 121 near the fourth ring 122, and the other end may be fixedly connected to one end of the fifth ring 123 near the fourth ring 122. The inner sidewall of the fifth support 215 may be fixedly connected with the outer sidewall of the fourth ring 122. In this way, sufficient supporting force can be provided for the fourth ring 122 and the fifth ring 123, and deformation of the fourth ring 122 and the fifth ring 123 during printing is avoided.

In step S1252, when the second housing unit 12 is printed to the second setting range, the laser starts printing the second half-finished body (i.e., as shown in fig. 5, the guide vane 15 of the guide 01, the second housing unit 12, the core housing unit 13, the vent hole 14 are each different in height position in the vertical direction, when the laser prints the second housing unit 12 at the same print height as the lowest point height of the setting positions of the other components of the guide 01, the corresponding components may start printing). The second half-finished body comprises guide vanes 15, an inner core housing unit 13, and ventilation holes 14.

In some embodiments, step S1252 includes:

Step S12521, printing the guide vane 15, the core housing unit 13 based on the second housing unit 12 printing to the second set value; wherein the second setting range includes a second setting value; the inner core housing unit 13 includes a first inner ring 131, a second inner ring 132, a third inner ring 133, a fourth inner ring 134; one end of the first inner ring 131 is fixedly connected with one end of the second column 222, and the other end is fixedly connected with one end of the second inner ring 132; the outer side wall of the first inner ring 131, which is close to one end of the second post 222, is fixedly connected with one end of the guide vane 15, which is far away from the third ring 121; one end of the second inner ring 132, which is far away from the first inner ring 131, is fixedly connected with a third inner ring 133; the outer side wall of the fourth inner ring 134 is fixedly connected with the inner side wall of the first inner ring 131; the hollowed-out unit 21 further comprises a third support 213 and a fourth support 214; the entity unit 22 further includes a third column 223, a fourth column 224; the third support 213 and the third column 223 are used together to support the fourth inner ring 134; the fourth support 214 and the fourth column 224 are used together to support the third inner ring 133;

step S12522, printing the vent hole 14 based on the second housing unit 12 printing to the third set value; wherein the second setting range further includes a third setting value; the vent hole 14 sequentially penetrates through the third ring body 121, the guide vane 15, the first inner ring 131 and the fourth inner ring 134;

In step S12523, printing is completed based on the vent hole 14, and printing of the second casing unit 12, the guide vane 15, and the core casing unit 13 is continued until completion.

In this embodiment, the step S1252 may include steps S12521 to S12523, and each step is described in detail as follows:

In step S12521, when the second casing unit 12 is printed to the second set value, the laser starts to print the guide vane 15 and the core casing unit 13 (i.e., starts to print the guide vane 15 when the print height of the third ring body 121 of the second casing unit 12 is the same as the lowest point height of the set position of the guide vane 15; and starts to print the core casing unit 13 when the print height of the third ring body 121 of the second casing unit 12 is the same as the lowest point height of the set position of the core casing unit 13). The second setting range may include a second setting value. As shown in fig. 5, the inner core housing unit 13 may include a first inner ring 131, a second inner ring 132, a third inner ring 133, and a fourth inner ring 134. One end of the first inner ring 131 may be fixedly connected with one end of the second cylinder 222, and the other end may be fixedly connected with one end of the second inner ring 132. The outer sidewall of the first inner ring 131 near the end of the second post 222 may be fixedly connected to the end of the guide vane 15 far from the third ring 121. One end of the second ring body 113 remote from the first inner ring 131 may be fixedly connected with one end of the third inner ring 133. The outer sidewall of the fourth inner ring 134 may be fixedly coupled with the inner sidewall of the first inner ring 131. As shown in fig. 5, the hollowed-out unit 21 may further include a third support 213 and a fourth support 214, and the entity unit 22 may further include a third column 223 and a fourth column 224. The third support 213 and the third column 223 are used together to support the fourth inner ring 134, so as to prevent the fourth inner ring 134 from being deformed during printing. One end of the third column 223 may be fixedly connected to the substrate, and the other end may be fixedly connected to the inner side of the end surface of the fourth inner ring 134, which is far from the third inner ring 133. One end of the third support 213 may be fixedly connected to the outer side of the end surface of the fourth inner ring 134 away from the third inner ring 133, and the other end may be fixedly connected to the outer side wall of the end near the third column 223 (i.e., the outer side wall of the upper end of the third column 223 as shown in fig. 5). The fourth leg 214 and the fourth column 224 together serve to support the fourth inner ring 134 to prevent deformation of the third inner ring 133 during printing. One end of the fourth cylinder 224 may be fixedly connected to one end of the fourth inner ring 134 away from the third cylinder 223, and the other end may be fixedly connected to an inner side of an end surface of the third inner ring 133 near the second inner ring 132. One end of the fourth support 214 may be fixedly connected to the outer side of the end surface of the third inner ring 133 near the second inner ring 132, and the other end may be fixedly connected to the outer side wall near one end of the fourth column 224 (i.e., the outer side wall of the upper end of the fourth column 224 as shown in fig. 5). This can provide sufficient supporting force for the core-housing unit 13, and avoid deformation of the core-housing unit 13 during printing.

In step S12522, when the second housing unit 12 prints to the third set value, the laser starts printing the vent hole 14 (i.e., when the print height of the third ring body 121 of the second housing unit 12 is the same as the lowest point height of the vent hole 14 set position, the printing of the vent hole 14 is started). The second setting range may include a third setting value. The vent hole 14 may sequentially penetrate through the third ring body 121, the guide vane 15, the first inner ring 131, and the fourth inner ring 134, so that the high-pressure gas for sealing can directly enter the chamber in the fourth inner ring 134 through the vent hole 14, the flow path of the high-pressure gas is reduced, and the sealing performance of the guide 01 is ensured to improve the pneumatic efficiency.

In step S12523, when the printing of the vent hole 14 is completed, the laser may continue to print the second housing unit 12, the guide vane 15, and the inner core housing unit 13 until completion, thereby realizing the integrated manufacturing of the guide 01 and reducing the flow resistance of the gas flowing into the guide 01.

In some embodiments, step S13 includes:

in step S133, the second body to be treated is subjected to surface treatment to obtain the guide 01.

In this embodiment, the step S13 may include steps S131 to S133, and each step is described in detail as follows:

Step S131, after the laser of the 3D printing apparatus prints the first processing body of the guide 01, the residual additive powder in the first processing body may be cleaned to obtain a first to-be-processed body, so that the first processing body is convenient to perform heat treatment subsequently, and structural strength degradation caused by excessive impurities of the formed guide 01 is avoided.

In step S132, after the first body to be treated is obtained, it may be placed in a heat treatment furnace to perform heat treatment (e.g., destressing treatment, hot isostatic pressing treatment, solution treatment, and aging treatment) to obtain a second body to be treated, so that the fatigue resistance of the molded guide 01 may be improved.

In step S133, after the second body to be treated is obtained, it may be subjected to surface treatment (e.g., support removal treatment, finishing) to obtain the guide 01, thereby ensuring that the surface roughness of the guide 01 is low and reducing the flow resistance of the gas flowing through the guide 01.

In some embodiments, the heat treatment in step S132 includes:

Step S1321, performing stress relief treatment on a first body to be treated to obtain a stress relief body; the destressing treatment comprises the steps of preserving the temperature of a first body to be treated under a first temperature condition for a first time, and slowly cooling to a second temperature along with the furnace;

step S1322, performing hot isostatic pressing treatment on the destressing body to obtain a hot isostatic pressing body; the hot isostatic pressing treatment comprises the steps of preserving heat and pressure of a destressing body at a third temperature under a first pressure condition for a second time, and slowly cooling to the second temperature along with a furnace;

Step S1323, performing solid solution treatment on the hot isostatic pressing body to obtain a solid solution; wherein, the solid solution treatment comprises the steps of preserving the heat of the hot isostatic pressing body for a third time under a fourth temperature condition, and then filling inert gas to cool the hot isostatic pressing body to a fifth temperature;

In this embodiment, the heat treatment in the step S132 may include the steps S1321 to S1324, and each step is described in detail as follows:

In step S1321, after the first body to be processed is obtained, the first body to be processed may be placed in a heat treatment furnace, kept at a first temperature for a first time, and then cooled slowly with the furnace to a second temperature (i.e. stress relief treatment), so as to obtain the stress relief body.

In step S1322, after the destressing body is obtained, the destressing body may be placed in a heat treatment furnace, and kept for a second time under the conditions of a third temperature and a first pressure, and then cooled slowly with the furnace to a second temperature (i.e., hot isostatic pressing treatment), thereby obtaining the hot isostatic pressing body.

In step S1323, after the hot isostatic pressing body is obtained, the environment where the hot isostatic pressing body is placed under the fourth temperature condition may be kept for a third time, and then inert gas may be filled to cool the hot isostatic pressing body to a fifth temperature (i.e., solution treatment), so as to obtain a solid solution.

In step S1324, after the solid solution is obtained, the environment in which the solid solution is placed under the sixth temperature condition may be kept warm for a fourth time, and then inert gas may be filled in to cool to the fifth temperature (immediate effect treatment), thereby obtaining the second body to be treated.

The guide 01 treated by the steps can further improve the fatigue resistance and the high temperature resistance of the guide 01.

In some embodiments, the first temperature is greater than or equal to 540 ℃ and less than or equal to 560 ℃; the second temperature is less than 200 ℃; the third temperature is 1220 ℃ or higher and 1240 ℃ or lower; the fourth temperature is 1090 ℃ or higher and 1110 ℃ or lower; the fifth temperature is less than 80 ℃; the sixth temperature is greater than or equal to 845 ℃ and less than or equal to 855 ℃; the first pressure is 155MPa or more and 165MPa or less; the first time is greater than or equal to 950min and less than or equal to 970min; the second time is more than or equal to 230min and less than or equal to 250min; the third time is more than or equal to 115min and less than or equal to 125min; the fourth time is 1430min or more and 1450min or less.

In this embodiment, during the heat treatment of the first body to be treated, the first temperature may be 540 ℃ or higher and 560 ℃ or lower; the second temperature may be less than 200 ℃; the third temperature may be 1220 ℃ or more and 1240 ℃ or less; the fourth temperature may be 1090 ℃ or higher and 1110 ℃ or lower; the fifth temperature may be less than 80 ℃; the sixth temperature may be 845 ℃ or higher and 855 ℃ or lower; the first pressure may be 155MPa or more and 165MPa or less; the first time may be greater than or equal to 950 minutes and less than or equal to 970 minutes; the second time may be 230min or more and 250min or less; the third time may be 115min or more and 125min or less; the fourth time may be 1430min or more and 1450min or less. The relevant parameters of the heat treatment are controlled in the above range, so that the guide 01 integrally printed and molded by the K438 material can be ensured to obtain proper room temperature and high temperature tensile properties, and the endurance strength, fatigue resistance and high temperature resistance of the guide 01 can be further improved. In addition, the related parameters in the above ranges can control the deformation amount generated when the guide 01 is subjected to heat treatment within a smaller dimensional tolerance range, and thus the integral precise molding is truly realized.

In some embodiments, the surface treatment in step S133 comprises:

Step S1331, performing support removal treatment on the second to-be-treated body; wherein the unsupported treatment comprises separating the second body to be treated from the 3D printing apparatus and removing the support assembly 02;

Step S1332, carrying out finish machining treatment on the second to-be-treated body to obtain a guide 01; wherein, the surface roughness of the second body to be treated after finishing treatment is less than Ra3.2.

In the present embodiment, the surface treatment in step S133 may include step S1331 and step S1332. The above steps are described in detail below:

In step S1331, after the second to-be-processed body is obtained, the second to-be-processed body may be separated from the substrate of the 3D printing apparatus by wire-cut electric discharge machining, and then the supporting component 02 is removed (i.e. the supporting process is removed), so that the supporting component 02 is prevented from affecting the assembly of the subsequent guide 01.

In step S1332, after the second body to be processed is subjected to the support removal treatment, the second body to be processed is subjected to the finish machining treatment to obtain the guide 01, so that the surface roughness of the guide 01 can be smaller than ra3.2, and the guide 01 can be ensured to meet the actual use requirement.

The present embodiment discloses a guide 01 applied to any one of the additive processing methods of the guide 01 in the above embodiments, as shown in fig. 6 and 7, the guide 01 includes:

the first housing unit 11, the first housing unit 11 has a ring-shaped structure;

a second housing unit 12, the second housing unit 12 having a ring-like structure; one end of the first shell unit 11 is fixedly connected with one end of the outer side wall of the second shell unit 12;

a core housing unit 13, the core housing unit 13 being disposed within the hollow cavity of the second housing unit 12;

The guide vane 15, the guide vane 15 is set up in the hollow cavity between second shell unit 12 and the inner core shell unit 13; one end of the guide vane 15 is fixedly connected with the second shell unit 12, and the other end is fixedly connected with the inner core shell unit 13;

The vent hole 14, the vent hole 14 penetrates the second housing unit 12, the guide vane 15, and the core housing unit 13 in this order.

In the present embodiment, as shown in fig. 6 and 7, the guide 01 may include a first housing unit 11, a second housing unit 12, a core housing unit 13, a vent hole 14, and a guide vane 15. The first casing unit 11 and the second casing unit 12 may have a ring structure, and one end of the first casing unit 11 may be fixedly connected with one end of an outer side wall of the second casing unit 12. The core housing unit 13 may be disposed in the hollow cavity of the second housing unit 12, and the core housing unit 13 may be annular and disposed at a distance from the second housing unit 12. The center axis of the core housing unit 13 may coincide with the center axis of the second housing unit 12, ensuring coaxiality of the molded guide 01. The guide vane 15 may be disposed in the hollow cavity between the core housing unit 13 and the second housing unit 12. One end of the guide vane 15 is fixedly connected with the second housing unit 12, and the other end is connected with the inner core housing unit 13, which may be disposed at intervals around the outer circumferential wall of the inner core housing unit 13 and inclined at a certain angle in the circumferential direction of the inner core housing unit 13, so that the gas flowing from the engine combustion chamber into the guide 01 may be rectified and guided. The vent hole 14 may sequentially penetrate through the second housing unit 12, the guide vane 15, and the inner core housing unit 13, so that the high-pressure gas for sealing can directly enter the inner core housing unit 13 through the vent hole 14, the flow path of the high-pressure gas is reduced, and the sealing performance of the guide 01 is ensured to improve the aerodynamic efficiency.

In other embodiments, as shown in fig. 8, the ventilation holes 14 may be circumferentially spaced on the guide vane 15 and sequentially penetrate through the second shell unit 12, the guide vane 15, and the inner core shell unit 13, so that the high-pressure gas flowing from the outside may form a uniform gas seal ring 32 in the fourth ring body 122.

In some embodiments, as shown in fig. 7, the first housing unit 11 includes a base 111, a first ring 112, a second ring 113; the base 111, the first ring body 112 and the second ring body 113 are fixedly connected in sequence;

The second housing unit 12 includes a third ring 121, a fourth ring 122, and a fifth ring 123; one end of the second ring body 113, which is far away from the first ring body 112, is fixedly connected with one end of the outer side wall of the third ring body 121; the third ring body 121, the fourth ring body 122 and the fifth ring body 123 are fixedly connected in sequence; the inner side wall of the third ring body 121, which is close to one end of the second ring body 113, is fixedly connected with the guide vane 15;

The inner core housing unit 13 includes a first inner ring 131, a second inner ring 132, a third inner ring 133, a fourth inner ring 134; the outer side wall near one end of the first inner ring 131 is fixedly connected with the guide vane 15; the first inner ring 131, the second inner ring 132 and the third inner ring 133 are fixedly connected in sequence; the outer sidewall of the fourth inner ring 134 is fixedly connected with the inner sidewall of the first inner ring 131.

In the present embodiment, as shown in fig. 7, the first housing unit 11 may include a base 111, a first ring 112, and a second ring 113. The base 111, the first ring body 112, and the second ring body 113 may be sequentially and fixedly connected. The second housing unit 12 may include a third ring 121, a fourth ring 122, and a fifth ring 123. One end of the second ring body 113, which is far away from the first ring body 112, may be fixedly connected with one end of the outer sidewall of the third ring body 121. The third ring 121, the fourth ring 122, and the fifth ring 123 may be sequentially and fixedly connected. The inner side wall of the third ring body 121 near one end of the second ring body 113 may be fixedly connected with the guide vane 15. The inner core housing unit 13 may include a first inner ring 131, a second inner ring 132, a third inner ring 133, and a fourth inner ring 134. The outer sidewall near one end of the first inner ring 131 may be fixedly connected with the guide vane 15. The first inner ring 131, the second inner ring 132, and the third inner ring 133 may be fixedly connected in sequence. The outer sidewall of the fourth inner ring 134 may be fixedly coupled with the inner sidewall of the first inner ring 131. Therefore, the structure of the guide 01 can be simplified on the premise of ensuring the structural strength, the guide 01 can be integrally formed during printing, the flow resistance of fuel gas in the guide 01 is reduced, and the pneumatic efficiency is improved.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples of implementing the disclosure, and that various changes in form and details may be made therein without departing from the scope of the disclosure.

Claims

1. A method of pilot additive processing, the method comprising:

Step S12, acquiring a first processed body of the guide through additive processing based on the three-dimensional model; wherein, the step S12 includes:

Step S125, printing a first half-processed body based on the first shell unit being printed to a first set range; wherein the first half-finished body comprises the guide vane, the second shell unit, the inner core shell unit and the vent hole; step S125 includes:

Step S1252, printing a second half-processed body based on the second housing unit printing to a second set range; wherein the second half-finished body comprises the guide vane, the inner core housing unit, the vent; step S1252 includes:

step S12523, printing the second shell unit, the guide vane and the inner core shell unit until the printing is finished based on the vent hole;

2. A pilot additive manufacturing method according to claim 1, wherein,

The requirements of the pilot include gas flow of the pilot, inlet pressure of the pilot, internal pressure of the vent, sustainable temperature of the first housing unit, sustainable temperature of the second housing unit, sustainable temperature of the inner core housing unit, sustainable temperature of the guide vane; the structural materials of the guide device are K438 and K418 alloy.

3. A pilot additive manufacturing method according to claim 1, wherein,

The step S13 includes:

4. A pilot-enhanced machining process according to claim 3, wherein,

The heat treatment in step S132 includes:

5. A pilot-enhanced machining process according to claim 4, wherein,

The first temperature is greater than or equal to 540 ℃ and less than or equal to 560 ℃; the second temperature is less than 200 ℃; the third temperature is 1220 ℃ or higher and 1240 ℃ or lower; the fourth temperature is greater than or equal to 1090 ℃ and less than or equal to 1110 ℃; the fifth temperature is less than 80 ℃; the sixth temperature is greater than or equal to 845 ℃ and less than or equal to 855 ℃; the first pressure is more than or equal to 155MPa and less than 165MPa; the first time is greater than or equal to 950min and less than or equal to 970min; the second time is more than or equal to 230min and less than or equal to 250min; the third time is more than or equal to 115min and less than or equal to 125min; the fourth time is 1430min or more and 1450min or less.

6. A pilot-enhanced machining process according to claim 3, wherein,

The surface treatment in step S133 includes:

step S1331, carrying out support removal treatment on the second to-be-treated body; wherein the de-bracing process comprises separating the second body to be processed from the 3D printing apparatus and removing a bracing assembly;

7. A guide, characterized in that the guide is applied to a guide additive processing method according to any one of claims 1 to 6, the guide comprising:

the first shell unit is in an annular structure;

8. A guide according to claim 7, wherein,

The first shell unit comprises a base, a first ring body and a second ring body; the base, the first ring body and the second ring body are sequentially and fixedly connected;