阅读说明：本技术 一种316l不锈钢电力非标金具工器具激光3d打印方法 (Laser 3D printing method for 316L stainless steel electric non-standard metal tool ) 是由 张仁奇 王小廷 周敏福 于 2020-12-29 设计创作，主要内容包括：本发明公开了一种316L不锈钢电力非标金具工器具激光3D打印方法,该方法为：包括刀具选型模块、打印模型结构布置模块、参数设置模块和3D打印机,参数设置模块包括设置模型分层参数、零件边框轨迹参数、起点重新定位参数、零件皮内轨迹参数、零件下皮轨迹参数、支撑轨迹参数、零件上皮扫描参数、零件皮内扫描参数、零件下皮扫描参数、支撑扫描参数、退火参数,其中布置打印的零件和参数设置模块在3D打印机分层软件中设置,在刀具选型模块、打印模型结构布置模块和参数设置模块设置完成后采用3D打印机进行打印。本发明能打印壁厚小于30mm,高度小于300mm的316L不锈钢零件激光3D打印工艺,成功用于316L不锈钢电力非标金具工器具激光3D打印。(The invention discloses a laser 3D printing method for a 316L stainless steel electric non-standard gold tool, which comprises the following steps: the automatic printing device comprises a cutter type selection module, a printing model structure arrangement module, a parameter setting module and a 3D printer, wherein the parameter setting module comprises a model layering parameter, a part frame track parameter, a starting point repositioning parameter, a part skin track parameter, a supporting track parameter, a part skin scanning parameter, a supporting scanning parameter and an annealing parameter, wherein the arranged and printed part and the parameter setting module are set in 3D printer layering software, and the 3D printer is adopted to print after the cutter type selection module, the printing model structure arrangement module and the parameter setting module are set. The laser 3D printing process can print 316L stainless steel parts with the wall thickness of less than 30mm and the height of less than 300mm, and is successfully used for laser 3D printing of 316L stainless steel electric non-standard hardware tools.)

1. A laser 3D printing method for a 316L stainless steel electric non-standard metal tool is characterized by comprising the following steps: the method comprises the following steps: the device comprises a cutter type selection module, a printing model structure arrangement module, a parameter setting module and a 3D printer, wherein the cutter type selection module is used for 3D printing cutters and K-type adhesive tape doctor blades, the printing model structure arrangement module is used for part structure selection and part arrangement printing, the parameter setting module comprises a model layering parameter, a part frame track parameter, a starting point repositioning parameter, a part skin track parameter, a supporting track parameter, a part skin scanning parameter, a supporting scanning parameter and an annealing parameter, wherein the printing model structure arrangement module arranges the printed parts and the parameter setting module performs the 3D printing machine parameter setting in the layered software, and printing by adopting a 3D printer after the tool type selection module, the printing model structure arrangement module and the parameter setting module are set.

2. The laser 3D printing method of the 316L stainless steel electric non-standard metal tool according to claim 1, wherein the method comprises the following steps: k type adhesive tape scrapes whitewashed sword has adhesive tape scraper and the alloy planer tool of two 30 degrees drawing die bosss, and alloy planer tool fixed connection is in the middle of two adhesive tape scrapers, and K type adhesive tape scrapes whitewashed sword and is provided with the thin slice of preventing the back powder that falls.

3. The laser 3D printing method of the 316L stainless steel electric non-standard metal tool according to claim 1, wherein the method comprises the following steps: the part structure selected by the printing model structure arrangement module can not be a closed container, the cylindrical thickness of the part is less than 30mm, the beam length of the part is less than 100mm, and the part is provided with a fillet transition at the transition position; the printing model structure arrangement module is used for arranging the printed parts, the long edges of the parts are upward, the vertical projection area of the parts on the bottom plate is the smallest, the parts are supported in a conical manner on the surface parallel to the bottom plate, and the massive supports among the suspended large thick beams in the parts are thickened properly.

4. The laser 3D printing method of the 316L stainless steel electric non-standard metal tool according to claim 1, wherein the method comprises the following steps: the method for setting the model layering parameters comprises the following steps: the thickness of the slice of the part is 0.03mm, and the part is scanned and supported every 2 layers.

5. The laser 3D printing method of the 316L stainless steel electric non-standard metal tool according to claim 1, wherein the method comprises the following steps: the method for setting the track parameters of the part frame comprises the following steps: starting a scanning frame, compensating the light spot to be 0.065mm, counting the frames to be 2, setting the boundary distance to be 0.055mm, setting the frame to be filled, compensating the frame to be 0.0550mm, and setting the scanning sequence to be Out2 In.

6. The laser 3D printing method of the 316L stainless steel electric non-standard metal tool according to claim 1, wherein the method comprises the following steps: the starting point relocation parameter setting method comprises the following steps: setting the mode as Random, setting the starting point repositioning parameters as starting optimization, optimizing sharp edges of the parameters, setting the angle threshold of an angle as 60 degrees, and setting the correction coefficient as 1; the method for setting the intradermal track parameters of the parts comprises the following steps: the pattern fill offset is 0.085mm, the fill pattern type is stripe, and the stripe parameters are: the scanning interval is 0.085mm, the stripe size is 10mm, the stripe offset is 0.04mm, the pattern filling sequence is an optimized sequence, the rotation initial angle is 67 degrees, the rotation increment is 67 degrees, and the displacement coefficient is 50; the method for setting the parameters of the part skin-removing track comprises the following steps: part skinning orbit parameter sets up to start, and the pattern is filled the skew and is 0.04mm, and the split frame sets up to start, and the transition zone is 0.03mm, and the area tolerance is 0.03mm, and the filling pattern type is the stripe, and the stripe parameter is: the scanning interval is 0.06mm, the stripe size is 10mm, the stripe offset is 0.04mm, the pattern filling sequence is an optimized sequence, the rotation initial angle is 201 degrees, the rotation increment is 67 degrees, and the displacement coefficient is 2; the method for setting the parameters of the supporting track comprises the following steps: the support track parameters are set to start, the pattern fill offset is 0.1mm, and the scanning light speed spacing is 0.2 mm.

7. The laser 3D printing method of the 316L stainless steel electric non-standard metal tool according to claim 1, wherein the method comprises the following steps: the method for setting the epithelial scanning parameters of the part comprises the following steps: setting the boundary, the following boundary, the filling frame, the blocked path and the scanning beam of the epithelial scanning parameters of the part to be the same: the diameter of the laser is 0.080mm, the speed of the laser is 500mm/s, and the power of the laser is 150W; the method for setting the intradermal scanning parameters of the parts comprises the following steps: the boundary, the following boundary and the filling frame for setting the intradermal scanning parameters of the part are the same: the diameter of the laser is 0.080mm, the speed of the laser is 800mm/s, and the power of the laser is 250W; the parameters of the blocked path and the scanning beam for setting the intracutaneous scanning parameters of the part are the same: the laser diameter is 0.080mm, the laser speed is 1200mm/s, and the laser power is 250W.

8. The laser 3D printing method of the 316L stainless steel electric non-standard metal tool according to claim 1, wherein the method comprises the following steps: the method for setting the scanning parameters of the lower skin of the part comprises the following steps: setting the boundary of the scanning parameters of the lower skin of the part, following the boundary, filling the frame, blocking the path and scanning the light beam to be the same: the laser diameter is 0.080mm, the laser speed is 1000mm/s, and the laser power is 200W.

9. The laser 3D printing method of the 316L stainless steel electric non-standard metal tool according to claim 1, wherein the method comprises the following steps: the setting method of the support scanning parameters comprises the following steps: the physical support scanning beam parameters for setting the support scanning parameters are as follows: the diameter of the laser is 0.080mm, the laser speed is 1000mm/s, and the laser power is 220W; the non-solid support parameters for the support scan parameters are set as follows: the laser diameter was 0.080mm, the laser speed was 1000mm/s, and the laser power was 230W.

10. The laser 3D printing method of the 316L stainless steel electric non-standard metal tool according to claim 1, wherein the method comprises the following steps: the setting method of the annealing parameters comprises the following steps: and setting annealing parameters to enable the printed part and the base plate to be placed into a vacuum high-temperature sintering furnace for annealing immediately after printing is finished, wherein the annealing temperature is 1050 ℃, the heat preservation time is 1 hour, and the printed part and the base plate are cooled along with the furnace.

Technical Field

The invention belongs to the technical field of 3D printing, and particularly relates to a laser 3D printing method for a 316L stainless steel electric non-standard metal tool.

Background

Metal laser 3D printing is powder bed melting. And melting the powder particles together point by using a laser, and processing layer by layer until the object is finished. The powder bed melting system has a heat source and a powder distribution control mechanism.

During metal laser 3D printing, a number of problems may arise that the equipment operator attempts to avoid, including voids, residual stresses, warping, cracks, localized bulging, and the like.

Common defects of metal laser 3D printing

1. Pores of

During laser 3D printing of a part, very small holes inside can form voids, which can be caused by the metal laser 3D printing process itself or by the powder. These micro-holes can reduce the overall density of the part, leading to cracking and fatigue problems.

During the atomization milling process, gas bubbles may form inside the powder, which will be transferred to the final part. More commonly, the metal laser 3D printing process itself creates pinholes. For example, when the laser power is too low, the metal powder may not be sufficiently melted. When the power is too high, the phenomenon of metal splashing can occur, and the molten metal flies out of the molten pool and enters the surrounding area.

When the powder size is larger than the layer thickness, or the laser lap is too sparse, pinholes will appear. The lack of complete flow of molten metal to the corresponding areas also causes pinholes to appear.

To address these issues, in metal laser 3D printing processes, powder splatter may be reduced by adjusting the spot shape, e.g., "pulse shaping" may achieve gradual melting of the regions.

2. Residual stress

In metal laser 3D printing, residual stress is caused by cold-heat variation, expansion-contraction processes. When the residual stress exceeds the tensile strength of the material or substrate, defects such as cracks in the part or warpage of the substrate may occur.

The residual stress is most concentrated at the joint of the part and the substrate, the central position of the part is provided with larger compressive stress, and the edge of the part is provided with larger tensile stress.

Residual stresses can be reduced by adding support structures because they are at higher temperatures than the substrate alone. Once the component is removed from the substrate, the residual stresses are relieved, but the component may deform during this process.

In order to reduce residual stress, temperature fluctuations must be controlled, and instead of continuous laser scanning, a reduction in the length of the scanning vector can be used. The support is selected to firmly connect the part on the platform, and the body support is used for rapid heat conduction.

3. Crack(s)

In addition to cracking of the internal porosity of the part, cracking can occur as the molten metal solidifies or as a region is further heated. If the heat source power is too high, stress may be generated during cooling.

Delamination may occur, leading to interlayer cracking. This may be caused by insufficient powder melting or by remelting of several layers below the bath.

4. Warp of

To ensure a smooth start of the print job, the printed first layer is fused to the substrate. When printing is completed, the part is separated from the substrate by wire cutting processing. However, if the substrate thermal stress exceeds its strength, the substrate may warp, eventually causing the part to warp, with the risk of the blade hitting the part.

To prevent warping, an appropriate amount of support needs to be added in place.

5. Local bump

Other deformations, such as shot peening, expansion or balling, cause the molten metal to locally bulge out of the height of the powder during laser 3D printing of the metal.

(II) reasons for defects generated by metal laser 3D printing

1. Problems of powder quality

The powder has impurity powder, the powder has poor fluidity and the powder particles are too large.

2. Unreasonable laser parameters

Too low a laser power may result in insufficient melting of the metal powder. When the power is too high, the phenomenon of metal splashing can occur, and the molten metal flies out of the molten pool and enters the surrounding area. The laser lap is too sparse and pinholes will appear. The laser scanning control is not reasonable, and the residual stress can be increased.

3. Unreasonable powder scraping mode

For the rigid scraping strip, due to expansion, spheroidization, local warping and the like, the molten metal bulges to exceed the height of the powder, so that the rigid scraping strip collides and scrapes with a printing workpiece, equipment is stopped to cause failure, and printing fails.

For the flexible scraping strip, due to the fact that the rigidity of the flexible scraping strip is not enough, in the powder scraping process, the scraping strip can generate powder ejection on the powder facing side of a support and a workpiece, the molten metal is locally raised to exceed the height of the powder, due to an accumulation effect, the powder spreading thickness of a multi-layer rear powder layer is uneven, printing layering and warping occur, equipment is stopped to break down, and printing fails.

(III) laser 3D printing status of 316L stainless steel electric non-standard metal tool

The electric non-standard metal tool is generally thicker and larger in size after being compared due to the particularity of application occasions, and the 316L stainless steel metal powder is too thick at the bottom of a part in the laser 3D printing process, so that the support is broken to cause warping, or powder is blown out to cause layering and bulging for a powder scraping knife.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the laser 3D printing method for the 316L stainless steel electric non-standard metal tool is provided to solve the problems in the prior art.

The technical scheme adopted by the invention is as follows: a laser 3D printing method for a 316L stainless steel electric non-standard metal tool comprises the following steps: the device comprises a cutter type selection module, a printing model structure arrangement module, a parameter setting module and a 3D printer, wherein the cutter type selection module is used for 3D printing cutters and K-type adhesive tape doctor blades, the printing model structure arrangement module is used for part structure selection and part arrangement printing, the parameter setting module comprises a model layering parameter, a part frame track parameter, a starting point repositioning parameter, a part skin track parameter, a supporting track parameter, a part skin scanning parameter, a supporting scanning parameter and an annealing parameter, wherein the printing model structure arrangement module arranges the printed parts and the parameter setting module performs the 3D printing machine parameter setting in the layered software, and printing by adopting a 3D printer after the tool type selection module, the printing model structure arrangement module and the parameter setting module are set.

K type adhesive tape doctor (application number 2020103145737) has adhesive tape scraper and the alloy planer tool of two 30 degrees draft bosss, and alloy planer tool fixed connection is in the middle of two adhesive tape scrapers, and K type adhesive tape doctor is provided with prevents back powder falling thin slice.

The part structure selected by the printing model structure arrangement module accords with the casting principle and cannot be a closed container, the cylindrical thickness of the part is less than 30mm, the beam length of the part is less than 100mm, and the part is provided with a fillet transition at the transition position without stress concentration sharp corners; the printing model structure arrangement module is used for arranging printed parts, wherein the long edge of each part is required to be upward, the vertical projection area of each part on the bottom plate is minimum, the part surface parallel to the bottom plate is provided with a conical support, and the massive supports among the suspended large thick beams in the parts are thickened properly.

The method for setting the model layering parameters comprises the following steps: the Part Slice Thickness (Part Slice Thickness) was 0.03mm, with Scan support every 2 slices.

The method for setting the track parameters of the part frame comprises the following steps: the scanning bezel is enabled, the speckle Compensation (Beam Compensation) is 0.065mm, the bezel Number (Number of borders) is 2, the boundary Distance (Border Distance) is 0.055mm, the padding bezel is enabled, the padding bezel Compensation (Fill Border Offset) is 0.0550mm, and the scanning Order (Scan Order) is Out2 In.

The starting point relocation parameter setting method comprises the following steps: setting the Mode (Mode) to Random, the origin repositioning parameter to enable optimization, the sharp edge of the optimization parameter, the Angle Threshold for the angles (Angle thresholds for the Corners) to be 60 °, and the Correction Factor (Correction Factor) to be 1; the method for setting the intradermal track parameters of the parts comprises the following steps: the Pattern Fill Offset (Hatch Offset) is 0.085mm, the Fill Pattern Type (Fill Pattern Type) is Stripes, and the stripe Parameters (Stripes Parameters) are: a Hatch Distance (scanning pitch) of 0.085mm, a Stripe Size of 10mm, a Stripe Offset of 0.04mm, a Hatch Sorting of Optimized Sorting, a Rotation start angle of 67 °, a Rotation Increment of 67 °, and a Shift Factor of 50; the method for setting the parameters of the part skin-removing track comprises the following steps: part skinning track parameter set to enabled, Hatch Offset to 0.04mm, Split Borders to 0.03mm, Transition Area to 0.03mm, AreaTolerance to 0.03mm, Fill Pattern Type to strips, strip Parameters to: a Hatch Distance of 0.06mm, a Stripe Size of 10mm, a Stripe Offset of 0.04mm, a Hatch Sorting of Optimized Sorting, a Rotation start angle of 201 °, a Rotation Increment of 67 °, and a shift factor of 2; the method for setting the parameters of the supporting track comprises the following steps: the support track parameter is set to enable, Hatch Offset is 0.1mm, and Hatch Distance is 0.2 mm.

The method for setting the epithelial scanning parameters of the part comprises the following steps: the parameters of the Border, Following Border, Fill Border, blockpath, and hashes that set the part epithelium scan parameters are the same: laser Diameter (Laser Diameter) is 0.080mm, Laser Speed is 500mm/s, and Laser Power is 150W; the method for setting the intradermal scanning parameters of the parts comprises the following steps: the Border, Following Border, Fill Borders that set the part intradermal scan parameters are the same: laser Diameter (Laser Diameter) is 0.080mm, Laser Speed is 800mm/s, and Laser power is 250W; the parameters of Blocked path and Hatches (scanning beam) for setting the intracutaneous scanning parameters of the part are the same: laser Diameter (Laser Diameter) is 0.080mm, Laser Speed is 1200mm/s, and Laser Power is 250W.

The method for setting the scanning parameters of the lower skin of the part comprises the following steps: the parameters of the Border, Following Border, Fill Border, blockpath, and hashes that set the part hypodermic scan parameters are the same: laser Diameter (Laser Diameter) is 0.080mm, Laser Speed is 1000mm/s, and Laser power is 200W.

The setting method of the support scanning parameters comprises the following steps: the parameters of a Solid Support (Solid Support) scanning beam (Hatches) for supporting the scanning parameters are set as follows: laser Diameter (Laser Diameter) is 0.080mm, Laser Speed is 1000mm/s, and Laser Power is 220W; Non-Solid Support (Non-Solid Support) parameters for supporting the scanning parameters are set as follows: laser Diameter (Laser Diameter) is 0.080mm, Laser Speed is 1000mm/s, and Laser power is 230W.

The setting method of the annealing parameters comprises the following steps: setting annealing parameters to enable the printed part and the base plate to be placed into a vacuum high-temperature sintering furnace for annealing immediately after printing is finished, eliminating laser printing stress of the part, keeping the annealing temperature at 1050 ℃, keeping the temperature for 1 hour, and cooling along with the furnace.

The invention has the beneficial effects that: compared with the prior art, the method can print the 316L stainless steel part laser 3D printing process with the wall thickness of less than 30mm and the height of less than 300mm, and is successfully used for laser 3D printing of the 316L stainless steel electric non-standard metal tool.

Detailed Description

The invention is further described below with reference to specific examples.

Example 1: a laser 3D printing method for a 316L stainless steel electric non-standard metal tool comprises a K-type adhesive tape doctor blade, a printing part model structure, a printing part model arrangement, a model layering parameter, a part frame track parameter, a starting point repositioning parameter, a part intradermal track parameter, a part hypodermis track parameter, a support track parameter, a part epithelial scanning parameter, a part intradermal scanning parameter, a part hypodermis scanning parameter, a support scanning parameter and an annealing parameter, wherein the printing part model arrangement, the model layering parameter, the part frame track parameter, the starting point repositioning parameter, the part intradermal track parameter, the part hypodermis track parameter, the support track parameter, the part epithelial scanning parameter, the part intradermal scanning parameter, the part hypodermis scanning parameter and the support scanning parameter are subjected to printing machine parameter setting in layering software.

In order to ensure the once success rate of laser 3D printing of 316L stainless steel electric non-standard metal tools and instruments without generating printing curling, warping and layering, a K-shaped rubber strip powder scraping knife (with the application number of 2020103145737) is provided with two rubber strip scrapers with 30-degree drawing bosses and an alloy planer knife, the alloy planer knife is fixedly connected between the two rubber strip scrapers, and the K-shaped rubber strip powder scraping knife is provided with a rear powder falling prevention slice.

Laser 3D prints and is a laser selective melting, belongs to local powder melting shaping, and the part internal stress is big, for avoiding taking place warpage, crackle among the printing process and leading to printing the termination to and avoid printing the powder support and being sealed in the part, it must accord with the casting principle to print the part model structure, can not be for sealing the container, and part cylindric thickness is less than 30mm, and part roof beam length is less than 100mm, and the part establishes circular transition, no stress concentration closed angle.

In order to avoid the situation that the printed part generates large strain in the direction parallel to the bottom plate to cause the support of the printed part to be broken and warped, the printed part model arrangement must ensure that the long edge is upward, the vertical projection area of the part on the bottom plate is as small as possible, the surface parallel to the bottom plate is properly supported in a tapered manner, and the massive support between the suspended large thick beams in the part is properly thickened.

In order to ensure the printing precision of the aluminum alloy electric non-standard metal tool, ensure the penetration and simultaneously ensure the printing speed, the Part Slice Thickness (Part Slice Thickness) of the model layering parameters is 0.03mm, and each several layers of scanning supports (Scan supports) are 2 layers.

The smoothness of the part boundary is not guaranteed, the boundary penetration is guaranteed, the surface crack source is reduced, the part frame track parameter is set to enable a scanning frame, the light spot Compensation (Beam Compensation) is 0.065mm, the Number of frames (Number of Borders) is 2, the boundary Distance (Border Distance) is 0.055mm, the filling frame is set to enable, the filling frame Compensation (Fill Border Offset) is 0.0550mm, and the scanning sequence (Scan Order) is Out2 In.

To avoid overlap of the melting points of each layer, resulting in overburning and causing crack defects, the Mode of the origin repositioning parameter (Mode) is Random, set to enable optimization, the sharp edge of the optimization parameter is such that the angular Threshold (Angle Threshold for the wheels) is 60 ° and the Correction Factor (Correction Factor) is 1.

In order to ensure that the melting energy of each layer in the part is uniformly distributed and supplemented layer by layer, the Pattern filling Offset (Hatch Offset) of the intradermal track parameter of the part is 0.085mm, the filling Pattern Type (Fill Pattern Type) is strips, and the strip parameter (strips Parameters) is: the hash Distance was 0.085mm, the Stripe Size was 10mm, the Stripe Offset was 0.04mm, the hash Sorting was Optimized Sorting, the Rotation start angle was 67 °, the Rotation Increment was 67 °, and the shift factor was 50.

To ensure that the lower surface layer of the part is smooth, the part subcutaneous trace parameter is set to active, the Hatch Offset is 0.04mm, the Split Borders is set to active, the TransitionArea is 0.03mm, the AreaTolerance is 0.03mm, the Fill Pattern Type is strips, and the strip Parameters are: the hash Distance is 0.06mm, the Stripe Size is 10mm, the Stripe Offset is 0.04mm, the hash Sorting is Optimized Sorting, the Rotation start angle is 201 °, the Rotation Increment is 67 °, and the shift factor is 2.

In order to ensure that the support printing is not pilling and bulging, and avoid the jamming of the doctor blade due to large friction force, the support track parameter is set to be started, the Hatch Offset (pattern filling Offset) is 0.1mm, and the Hatch Distance (scanning light speed interval) is 0.2 mm.

To ensure the epithelial finish of the part, the epithelial powder is sufficiently melted and the parameters of the parts epithelium scan are the same for Border, followingborders, Fill Borders, Blocked path, and Hatches: laser Diameter (Laser Diameter) is 0.080mm, Laser Speed is 500mm/s, and Laser power is 150W.

To ensure that the interior of the part is sufficiently melted, porosity is reduced, and printing speed is increased, the inside skin scanning parameters of the part, such as Border (Border), Following Border (Border), and Fill Border (Fill Border), are the same: laser Diameter (Laser Diameter) is 0.080mm, Laser Speed is 800mm/s, and Laser power is 250W; the parameters of blockpath, Hatches (scanning beam) of the part intradermal scanning parameters are the same: laser Diameter (Laser Diameter) is 0.080mm, Laser Speed is 1200mm/s, and Laser power is 250W.

To ensure that the lower surface of the part is sufficiently melted and that it bonds well to the support, while also increasing the printing speed, the parameters of the subcutaneous scan of the part are the same for Border, Following Border, Fill Border, blockpath, and Hatches: laser Diameter (Laser Diameter) is 0.080mm, Laser Speed is 1000mm/s, and Laser power is 200W.

To ensure Support shaping and sufficient strength, and no pilling and no fault, the Solid Support (Solid Support) scanning beam (hashes) parameters supporting the scanning parameters are: laser Diameter (Laser Diameter) is 0.080mm, Laser Speed is 1000mm/s, and Laser power is 220W; the Non-Solid Support (Non-Solid Support) parameters for supporting the scanning parameters (13) are as follows: laser Diameter of 0.080mm, Laser Speed of 1000mm/s, and Laser power of 230W;

in order to reduce the internal stress of the aluminum alloy printed part, avoid delayed cracks, avoid sensitization of a 16L stainless steel electric non-standard metal tool and improve the metallographic structure of the part, the annealing parameters are that the printed part and a bottom plate are put into a vacuum high-temperature sintering furnace for annealing immediately after printing is finished, the laser printing stress of the part is eliminated, the annealing temperature is 1050 ℃, the heat preservation time is 1 hour, and the part is cooled along with the furnace.

Configuration parameters of laser 3D printing machine of 316L stainless steel electric non-standard metal tool

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention, and therefore, the scope of the present invention should be determined by the scope of the claims.