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Anti-deformation laser cutting method

A laser cutting, anti-deformation technology, applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve problems such as deformation, reduce deformation, reduce heat input, and improve processing accuracy.

Inactive Publication Date: 2020-08-21
SHANDONG MEILING BODE CHEM MACHINERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to overcome the problem of deformation caused by the use of laser cutting to process baffles in the prior art, and to provide an anti-deformation laser cutting method

Method used

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  • Anti-deformation laser cutting method

Examples

Experimental program
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Effect test

example 1

[0027] Example 1: The diameter (d) of the cutting hole is 19mm, and the thickness of the cutting plate is 10mm. If the number of holes to be cut in one square meter is 1794, the cutting coefficient is calculated to be 1.1. To make the cutting coefficient less than 0.5, Under the premise of not changing the diameter of the hole and the thickness of the cutting plate, it is necessary to reduce the number of single-cut holes in one square meter to one-third, that is, 598, and the cutting coefficient becomes 0.37. Cutting method, that is: after cutting the first hole, skip the second and third holes to cut the fourth hole, after cutting the first 598 holes, then cut the second 598 according to the above jump cutting method Hole, the third 598 holes, a total of three times to go back and forth to complete cutting.

example 2

[0028] Example 2: Compared with Example 1, the diameter (d) of the cutting hole is changed to 25mm, the thickness of the cutting plate is still 10mm, and the number of holes to be cut in one square meter is 1112, then the cutting coefficient is 0.9, without changing On the premise of the circumference of the hole and the thickness of the cutting plate, if the cutting coefficient is not greater than 0.5, the number of holes cut in a single square meter needs to be reduced to half, that is, 556. The cutting coefficient is 0.45, adopt the method of jump cutting, that is: after cutting the first hole, skip the second hole and cut the third hole, after cutting the first 556 holes, then cut the second 556 holes according to the above skip cutting method , a total of two cuts are required.

[0029] In short, regardless of the thickness of the cutting plate and the diameter of the cutting hole, the number of holes cut in each round of cutting per unit area can be changed by skip cutti...

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Abstract

The invention relates to the field of laser cutting and discloses an anti-deformation laser cutting method. The cutting method comprises the steps that S1, relevant parameters are acquired, wherein the relevant parameters include the diameter (d) of each cut hole, the thickness (delta) of a cut plate and the number (n) of holes cut in each round per unit area; S2, a cutting coefficient is calculated according to the following formula (shown in the description), wherein d is the diameter of each cut hole, and the unit is mm; delta is the thickness of the cut plate, and the unit is mm; and n isthe number of the holes cut in each round per unit area; and S3, the cutting mode is determined, wherein when the cutting coefficient is greater than 0.5, a skip-cutting mode is adopted for cutting, and the cutting coefficient is not greater than 0.5 when the number of the holes cut in each round per unit area is changed. By the adoption of the laser cutting method, heat input is reduced, the deformation of the steel plate is greatly reduced, and the machining precision of the holes is improved.

Description

technical field [0001] The invention relates to the field of laser cutting, in particular to an anti-deformation laser cutting method. Background technique [0002] The baffle is one of the important parts in the shell-and-tube heat exchanger. The function of the baffle in the shell-and-tube heat exchanger is to support the heat exchange tube and baffle the shell-side medium. Its machining accuracy determines The life of the heat exchanger and the difficulty of assembly are greatly reduced. [0003] In the prior art, laser cutting machines are usually used to process baffle holes, which not only improves the work efficiency, but also greatly improves the problem of low precision caused by ordinary drilling machines. [0004] However, the use of laser cutting to process baffles also has certain disadvantages. Since the principle of laser cutting is to cut steel by melting or burning, there is a large heat input, so if the cutting holes are too dense, a large amount of heat i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/38B23K26/70
CPCB23K26/38B23K26/70
Inventor 陈东玲刘兵丁晓丽
Owner SHANDONG MEILING BODE CHEM MACHINERY CO LTD