Difference between 20w,30w,50w of Fiber laser marking machine August 26, 2019 – Posted in: laser

As you know,20w, 30w and 50w are the most common watt for fiber laser marking machine. But how to choose the different laser watt? Is there big difference between these watt? Now, share you some details.


Here is difference between 20w, 30w and 50w
① 30w is more durable than 20w , and 50w is more durable than 30w
② if marking same content on same materials, 50w marking speed is faster than 20w/ 30w
③ if marking same depth on same material, 50w marking time is shorter than 20w/ 30w

Technical reason
In Technical side, following is reason:
①Single pulse energy
The higher laser power the higher single pulse energy,for example,if we want to mark 0.1mm deep marker on metal,
we should repeat marking for 30 times if we use 20watt machine, and if we use 30watt machine to do the same mark, it maybe need no more than 20 times, and if we use 50watt machine to do the same mark, it maybe need no more than 10 times,

in brief, big power laser machine have greater efficiency.

②Peak power (P.P.)
The P.P. of 20watt is 8000w, P.P. of 30watt is 9000w, P.P. of 50watt is 15000w,

Detailed application
The 20W machine is mainly used for surface marking of plastic, stainless steel, aluminum and so on.

If the customer wants to engrave deeply, then a 30W machine will be a better choice. For all materials, aluminum is the easiest to achieve deep engraving. There are many gun manufacturers and metal suppliers in the US, so for this customer, a 30w machine will be a better choice.

If you want to do deep marking on brass, silver, or gold or cut it, you need to choose the 50watt. As you know, these materials are high-reflective materials. If you choose the lower watt, the marking speed is low.