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Method for manufacturing laminated steel plate

A technology of thousand-layer steel plate and substrate, which is applied in the field of production of thousand-layer steel plate, can solve problems such as technical limitations of thousand-layer steel plate manufacturing, difficulty in meeting market demand, cumbersome process, etc., and achieve reduction of micro-segregation, high alloy density, and reduction of impurities The effect of content

Active Publication Date: 2016-04-13
YANGJIANG KNIFESCISSOR HARDWARE RES INSTITUTION OF IND TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] It can be seen that no matter whether it is the traditional process or the more advanced powder metallurgy method, the production of thousand-layer steel plate will be limited by the manufacturing technology, the process is cumbersome, the product is single, and it is difficult to meet the ever-changing market demand. Therefore, the present invention discloses A method of preparing thousand-layer steel plate using laser selective melting technology

Method used

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  • Method for manufacturing laminated steel plate
  • Method for manufacturing laminated steel plate
  • Method for manufacturing laminated steel plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] 1) Slice the designed 3D model of the Melaleuca steel plate, the slice thickness is 0.05mm, and contains the cross-sectional profile information and scanning processing path of the part to be processed, save it in .STL format and import it into the laser selective melting equipment processor middle;

[0051] 2) Adjust the height of the flexible scraper and its scraping speed so that the thickness of the powder layer is consistent with the slicing information, and set the power, scanning speed, scanning distance and scanning mode of the laser beam;

[0052] 3) Select the substrate 13 suitable for the thousand-layer steel plate, fix it on the workbench, seal the forming chamber, evacuate and fill it with 99.99% argon for protection, and keep the oxygen concentration within 5-10ppm;

[0053] 4) The left powder feeding cylinder 5 feeds powder, and the left flexible scraper 1 evenly coats a layer of the first metal powder 3 with a thickness of 0.05mm on the substrate 13, and...

Embodiment 2

[0064] Other conditions are the same as in Example 1, laser beam power 400W, beam quality M2<1.1, scanning speed 500mm / S, laser beam spot diameter 75μm, substrate preheating temperature 250℃, laser beam scanning mode X-Y orthogonal scanning, laser energy distribution Satisfying the Gaussian distribution, the laser output mode is a continuous single mode.

[0065] The properties of the Melaleuca steel manufactured in this example are shown in Table 2.

[0066] Table 2 Various properties of the thousand-layer steel plate after treatment

[0067]

Embodiment 3

[0069] Other conditions are the same as in Example 1, laser beam power 300W; beam quality M2<1.1; scanning speed, 400mm / S; laser beam spot diameter 75μm; substrate preheating temperature 250°C; The distribution satisfies the Gaussian distribution, and the laser output mode is a continuous single mode.

[0070] The properties of the Melaleuca steel manufactured in this example are shown in Table 3.

[0071] Table 3 Various properties of the thousand-layer steel plate after treatment

[0072]

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Abstract

The invention discloses a method for manufacturing a laminated steel plate. According to the method, two different types of metal powder are used to be laid alternately, the laser selected region layering fusion technology is adopted, and the powder is directly printed and formed into the laminated steel plate. Compared with a traditional laminated steel plate manufacturing process, by the adoption of the method, the laminated steel plate meeting the use requirement can be directly printed. The method has the advantages that the structure, the components and the performance of the laminated steel plate are equivalent to those of a laminated steel plate manufactured through the traditional process, manufacturing cost is low, forming efficiency is high, the types of the powder can be changed and scanning routes can be set according to different requirements, and therefore laminated steel plates of different types can be produced.

Description

technical field [0001] The invention belongs to the field of additive manufacturing, and more specifically relates to a method for manufacturing a thousand-layer steel plate. Background technique [0002] Selective laser melting technology (SLM) is based on the principle of discrete-stacking, using laser, precision transmission, new materials, computer-aided design / computer-aided manufacturing (CAD / CAM) and other technologies to focus the spot through fine laser, and scan line by line. After the selected area on the newly laid powder layer forms a two-dimensional outline, the layer and layer are stacked and formed, so as to directly obtain a scientific and technological system of metal functional parts with almost any shape and complete metallurgical bonding. Different from traditional processing technology, parts with a density of more than 95% and any complex shape can be quickly and precisely manufactured on one piece of equipment by laser selective melting technology, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B33Y10/00
CPCB22F10/00B22F12/17B22F10/36B22F10/28B22F10/366B22F12/70B22F10/32Y02P10/25
Inventor 张瑞华尹燕刘鹏宇屈岳波路超栗子林许广伟
Owner YANGJIANG KNIFESCISSOR HARDWARE RES INSTITUTION OF IND TECH
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