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Laser cladding method for stacking horizontal ribs on unequal height sections

A technology of laser cladding and horizontal ribs, applied in laser welding equipment, improving energy efficiency, improving process efficiency, etc., can solve problems such as insufficient strength, welding deformation, long casting cycle, etc., and achieve accumulation rate and material utilization rate High, high parallelism, firm rib structure

Active Publication Date: 2020-11-03
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, machining is time-consuming and consumable, and the waste is serious; welding is deformed or insufficient in strength, and the casting cycle is long and subsequent processing is required

Method used

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  • Laser cladding method for stacking horizontal ribs on unequal height sections
  • Laser cladding method for stacking horizontal ribs on unequal height sections
  • Laser cladding method for stacking horizontal ribs on unequal height sections

Examples

Experimental program
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Effect test

Embodiment 1

[0032] See figure 2 , the stacking positions of the ribs in this embodiment include planes and slopes. Specifically, the total length of the ribs is 34.4mm, the length on the plane is 10mm, and the length on the slope is 24.4mm; The projected length is 5.37mm. The number of rib segments is determined according to the above content, and the height difference between adjacent ribs must be less than or equal to 0.5mm. Wherein, sin α=5.37 / 25=0.2148, cos α=0.9767, as can be seen from the above formula, the number of rib segments in this embodiment is The present embodiment takes n=14, wherein, rib 2 is the first section, rib 13 is the end (planar section), rib 1 and 14 are the deceleration sections on the first section and the end respectively, and the length of the deceleration section is 1mm. Then determine the cladding height of each rib according to the actual needs, and then determine the cladding speed of each rib according to the relationship between cladding height and c...

Embodiment 2

[0037] See image 3 , the stacking position of ribs in this embodiment is only on the slope,

[0038] In this embodiment, laser cladding is used to accumulate horizontal ribs only on the slope. Specifically: the angle between the slope and the horizontal line is 9°, determine the length of the stacking position, that is, the length of the rib is 30mm, and determine the number of rib segments according to the above content , the height difference between adjacent ribs must be less than or equal to 0.5mm. It can be seen from the above formula that the number of rib segments in this embodiment is In this embodiment, n=11, wherein the rib 201 is the first section, the rib 1001 is the end, and the ribs 101 and 1101 are the deceleration sections arranged on the first section and the last section respectively, and the length of the deceleration section is 1 mm. Then determine the cladding height of each rib according to actual needs, and then determine the cladding speed of each r...

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Abstract

The invention relates to a method for laser cladding and stacking horizontal ribs on sections of unequal heights, comprising the following steps: providing sections of unequal heights and a laser cladding device, determining the stacking position on the sections of unequal heights, according to the The stacking position determines the length of the ribs on the unequal height section; the lowest point of the stacking position is used as the first section of the ribs, and the highest point is used as the end section of the ribs, according to the length and each The height of the ribs in the vertical direction determines the number of segments of the ribs, and the cladding of each rib is determined according to the relationship between the cladding height of the ribs in each segment and the scanning speed under a certain parameter Speed, laser cladding to obtain horizontal ribs. The method adopts the stepwise speed change method to divide the ribs with different heights into sections, and makes use of the influence of the scanning speed change on the cladding layer height, so that the cladding ribs have a horizontal structure.

Description

technical field [0001] The invention relates to a method for laser cladding and stacking horizontal ribs on sections with different heights, and belongs to the technical field of laser cladding forming. Background technique [0002] Laser cladding forming technology is a new technology developed by combining laser cladding technology and rapid prototyping technology. It slices the formed part according to a certain thickness, converts the three-dimensional design model into a series of two-dimensional contour information, and then uses the method of laser cladding to accumulate materials layer by layer according to the contour trajectory, and finally forms a three-dimensional solid part. In the prior art, machining, welding and casting are mostly used to process ribs on unequal height sections. However, machining is time-consuming and consumable, and the waste is serious; welding is deformed or insufficient in strength, and the casting cycle is long and subsequent processin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F7/08B22F3/105B33Y10/00
CPCB22F7/08B33Y10/00B22F10/00B22F10/25B33Y80/00B23K26/34B23K26/03Y02P10/25B23K26/342
Inventor 石拓李东升李刚蒋伟伟苏昊
Owner SUZHOU UNIV
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