SELECTION OF GAS CUTTING NOZZLE

SELECTION OF GAS CUTTING NOZZLE

SELECTION OF GAS CUTTING NOZZLE –

Hello friends once I was supervised the Plate fabrication work in my company fabrication yard  and there was starting a cutting of plate of thickness 40 mm. During the cutting work my welder asked from me what size of nozzle i had to be used for cutting this plate.

But at that time i was newly joined the company and this is new work for me in such field so I denied to him and told him that I have not had any solution of it.

 

Then I searched it from many sources such as my seniors, from internet and from books then I found Solution of it which I want to share with you. Then if we have to cut a plate of thickness 40 mm so as per the chart we have to use the nozzle of size 1/16 “  and recommended  oxygen pressure is between 2.5 kg to  3.2 kg but maximum time welder adjust it with  their experience.

 

MATERIAL   THICKNESS TYPE OF A/B SIZE OF NOZZLE IN INCH CUTTING OXYGEN PRESSURE
IN MM IN INCH KG Ib/SQ INCH
1 1/4 1/32 1.4 20
12 1/2 3/64 2.0 30
25 1 1/16 2.5 35
50 2 1/16 3.2 45
75 3 1/16 3.5 50
100 4 1/16 4.2 60
150 6 5/64 4.5 65
200 8 3/32 4.9 70
250 10 7/64 5.3 75
300 12 1/8 5.3 75

 

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