The effects of curvature radius and cutting speed on the top kerf width of laser cutting of thin pipe with a small diameter

Huang Kaijin; Zeng Dawen; Xie Changsheng

The effects of curvature radius and cutting speed on the top kerf width of circumferential laser cutting of thin seamless steel pipes with a small diameter (outer diameter of pipe D<80mm and wall thickness t=2.5mm) were investigated experimentally.Experiments showed three main conclusions:(1)as the cutting curve length increases,the top kerf width of laser cutting also increases,(2)the average top kerf width of laser cutting increases with decreasing curvature radius,and increasing quite dramatically as D is less than 25mm,(3)as the cutting speeds increase,the average top kerf width of laser cutting decreases.The main reasons are curvature effects and different laser interacting on times.At last, the authors regard that variable parameters are necessary for people to adopt in order to obtain a uniform kerf width for thin seamless steel pipe with a small diameter.

1. Department of Materials Science & Engineering, HUST, Wuhan, 430074

Received Date: 1998-10-05

Accepted Date: 1999-01-04

Available Online: 2000-01-25

Abstract: The effects of curvature radius and cutting speed on the top kerf width of circumferential laser cutting of thin seamless steel pipes with a small diameter (outer diameter of pipe D<80mm and wall thickness t=2.5mm) were investigated experimentally.Experiments showed three main conclusions:(1)as the cutting curve length increases,the top kerf width of laser cutting also increases,(2)the average top kerf width of laser cutting increases with decreasing curvature radius,and increasing quite dramatically as D is less than 25mm,(3)as the cutting speeds increase,the average top kerf width of laser cutting decreases.The main reasons are curvature effects and different laser interacting on times.At last, the authors regard that variable parameters are necessary for people to adopt in order to obtain a uniform kerf width for thin seamless steel pipe with a small diameter.

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Reference (14)

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The effects of curvature radius and cutting speed on the top kerf width of laser cutting of thin pipe with a small diameter

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