Water jacket plasma cutting,TopTech ARTTEC I

TopTech ARTTEC I table CNC plasma cutting machine, cutting with water jacket to cut 0.2mm galvanized sheet.

Fast cutting speed and no bending.

TopTech, cut what you want!

www.toptechone.com

TopTech Flame Adjustment Tips (II)

FAQ-- Flame cutting issues

--flame cutting experience and technique

During processing, flame CNC cutting machines had been applied widely. Now Beijing TopTech Technology Co., Ltd. would like to share TopTech 10 years flame CNC cutting machines experience and technique, which collected by our R&D and our 10 years adjustment at more than 50 customers’ places.

TopTech PROTEC gantry CNC flame & plasma cutting machine

Cutting quality issue description

Improving flame CNC cutting machines' O2 & C2H2 quality to get high cutting quality is the basic protection of flame cutting quality. When use 99% O2 and C2H2 bottle producer to do flame CNC cutting process, the cutting surface quality is very low and usually it has rough surface,fusion on the upper side and a lot of drows and cutting is not continually.

When customers using TopTech flame CNC cutting machine, due to the thermal deformation had influenced on cutting materials during flame cutting, it usually had a deep trace on cutting parts ends. This track is fracture surface.

Improving cutting quality measure

For thicker than 30mm plates, TopTech gantry flame CNC cutting machines’ cutting speed is set as 20%-60% of standard speed. If TopTech gantry flame CNC cutting machines’ using purity reach 99% of liquid O2 to cut, due to working air pressure stable, the cutting surface can be much more improved, less drows, and the cutting speed can be improved too.

If using C2H2 bottled supply gas, due to the purity high and pressure stable, it will not have pause

cutting issue.

It is a big issue on cutting performance, if the cutting plate’s surface has rusts, dusts and nozzle flow is blocked. So the plates should be covered to avoid water, and clean them before cutting. Also need use the nozzle correctly and clean it often.

For 6mm-30mm thickness plates, the cutting speed of TopTech gantry CNC cutting machine can be set 60%-90% of standard speed. To improve the cutting finish quality, increasing O2 pressure from 0.1MPa to 0.3MPa when cut thick plates, it can make sure the vertical of cutting finish side and let the cutting process smoothly.

Cutting shape changing issue description

Generally speaking, TopTech gantry CNC flame cutting machine to cut same thickness plates, the big cutting parts shape changing issue is better than the small cutting parts. The less of length:width of the cutting part has better cutting shape than more of length:width of the cutting part. And the center cutting shape has less changing than the one at the plate’s edges.

Reduce cutting shape changing issue measure

The worst cutting shape changing issue will lead the parts size can’t be accepted and influence on the next welding process, or even worse to waste the whole plate. So to reduce cutting shape changing issue and improve cutting parts dimensional accuracy, TopTech would like to share the following measure.

During program, please choose reasonable cutting order, cutting direction and cutting starting point. During nesting lots cutting parts, please follow the principle: cut small parts first, then the big parts, and pierce first then cut the outline.

According to the cutting parts outline and plate position, analysis potential cutting shape changing tendency to fix the reasonable start spot and cutting distance.That is to say, during TopTech gantry CNC cutting machine operation, try the best to make sure the last cutting part connect with the

stable plates.

For some big length: width parts, when program them, need consider not only the cutting order to control the shape changing issue, but also using gap cutting method. That is to say, when cut the part, let 2 spots or more sports on one part edge to let them connected, not be cut off. These spots can connect the part with the cutting plate as one. After other parts had been cut, then cut these

spots. This cutting method can reduce cutting parts on length way shape changing issue.

For more questions, please feel free contact TopTech after sales team:

Web:www.toptechone.com

Email: info@toptechone.com

Skype: info-toptechone

TopTech Flame Adjustment Tips (I)

How to release the flame CNC cutting machine’s

Max power -- Flame adjustment

Before using flame CNC cutting machines, operators should consider about flame cutting thickness, cutting materials, and gas parameters together to make sure the cutting quality. TopTech flame cutting machines hope this adjustment can help all the TopTech flame CNC cutting machines customers. And we also warmly welcome to hear our customers’ feedback about our products to improve our flame cutting machines better for more customers.

The cutting performance for the flame CNC cutting machine is depends on the equipment accuracy, the operator’s adjustment, and also depend on the cutting gas type. For example, purchase same type TopTech flame cutting machines and cut the same material, same thickness, same drawing, but the results are different, that is because the operator adjusted the gas technical parameters are different. In order to make sure TopTech flame CNC cutting machines can have the best performance, hereby we’d like to share our more than 10 years fame adjustment experience with you.

As we all knew that, there are a lot of factors can influence on flame cutting quality, esp. during pre-heating, flame temperature, torch length factors are very important. These above important factors are called flame adjustment. Then we will talk about the technical of these parameter adjustment for your reference.

Before we adjust the flame technical parameters, we need to know the 3 different types of flame due to different gas ratio. Usually, during flame cutting mode, to adjust O2 and HCCH ratio can get 3 types cutting flame: neutral flame (normal flame), oxidized flame, reduced flame.

Normal flame characteristic is that its reduction zone has no free O2 and active carbon, and it has 3 clean zones. The flame core has clean outline, which closes to cylindrical. The elements of flame core is O2 and HCCH, and the end is even round and shining shield. The shield is made from glowing carbon particles. The temperature of flame core is 1000℃.

The reduction zone is out side the flame core and its brightness is less than the flame core. The incomplete burning HCCH products -- CO and H made for reduction zone. This zone temperature can reach about 3000℃. The outer flame is the complete burned zone, which is outside the reduction zone, and made from CO2, H2O↑ and Nitrogen. This zone’s temperature range is changing from 1200-2500℃.

Now we mentioned about the neutral flame is normal cutting situation, during the actual operation, it is the final adjustment. But actually it is usually oxidized flame or reduced flame. What is the characteristic of oxidized flame and reduced flame and what is the main issue of oxidized flame and reduced flame?

Oxidized flame is at the situation of O2 overmuch, the flame core is conical and the flame length is not as long as neutral flame, and the outline is not clean, brightness is less than neutral flame. As well as, oxidized flame’s reduction zone and outline flame is short and the flame is purple blue with burning sound. And the burning sound is influenced by O2 pressure. The temperature of oxidized flame is higher than the neutral flame. If cutting with oxidized flame, the cutting quality is obvious not good.

Reduced flame is at the situation of HCCH overmuch, the flame core is no obvious outline, and at the end of flame core the color is green. According to the green out line, we can tell that the HCCH is overmuch. Its reduction zone is abnormally bright, almost combined with flame core, and the color is yellow. When the HCCH is too much, it has black smoking, because during burning the O2 is much less than HCCH’s need.

The power of pre-heat flame influence on cutting speed, cutting quality tightly. With the increasing of plate’s thickness and cutting speed, the power of flame need to be increased but not too strong, esp. on cutting thick plates. The reaction of metal burning had been increased, it strengthened the front parts pre-heat power. At this time, over power re-head flame will lead the cutting edge over burned.

Generally speaking, if cut less than 200mm plates, use neutral flame can get good cutting quality; if cut thicker plates, use reduced flame to be the pre-heat cutting, cause the reduced flame is very long, which must protect the flame length is at least 1.2 times of plates thickness.

In conclusion, if have any questions during using TopTech flame CNC cutting machines, we need check the flame cutting machine during operation. To check the cutting performance during the operation, we can tell how to adjust the flame parameters as above mentioned. To cut different types of steel, has different parameters setting, it need experience and strengthen study and research to get more knowledge of TopTech flame CNC cutting.

TopTech after-sales contact info:

E-mail:info@toptechone.com

Skype: info-toptechone

Dagger II portable flame CNC cutting machine

TopTech Dagger II 2 flame torches live cutting

2 flame torches cutting at the same time on one portable CNC cutting machine, Dagger II.

Cut What You Want!



www.toptechone.com

sally@toptechone.com

Plasma cutting machine--TopTech ARTTEC I

TopTech ARTTEC I plasma CNC cutting machine.
Table CNC cutting machine.

Table type CNC cutting machine, cutting thickness range is from 0.3mm-25mm.

Working with any type air plasma power sources.



CUT WHAT YOU WANT!



www.TopTechone.com

sally@toptechone.com