DuriAuxiliary gas for Fiber Laser Cutting, did you get the right one?
The schematic diagram of laser cutting is shown in the following.
During the process, auxiliary gas is necessary to blow off the slag/dross in the kerf and cool down the cutting surface, also it protects lens and nozzle of laser. Basically there are 3 kinds of gas: Oxygen, Nitrogen and Air, any of them affects directly to the cutting performance, speed, thickness etc. So we really need to think better before action.
1.Oxygen
Oxygen is commonly used to cut thick carbon steel because the chemical reaction between iron element and oxygen helps the metal absorb heat and promotes it melt, which can greatly improve the cutting efficiency.
However, oxygen will cause a marked oxide film on the cut surface and it will have a quenching effect around, increases the hardness which impact on subsequent processing. It also turns kerf to black or dark yellow.
Generally, Oxygen assists carbon steel plates cut, low-pressure punching, and low-pressure cutting. Oxygen is generally vaporized from liquid oxygen which provided by the local supplier, so the quality of the gas source is clean and no need special treatment.
2. Nitrogen
Nitrogen will form around the molten metal as protective atmosphere while it's assisting the cut, prevent oxidation of the material, avoid the formation of oxide film. However, the cutting speed is not as fast as oxygen, and the nitrogen consumption of the nitrogen is large which means the cost will be higher.
The non-oxidized surface has the characteristics of direct welding, strong corrosion resistance and the kerf turns white.
Generally, nitrogen is used to cut stainless steel, galvanized sheet, aluminum, aluminum alloy, brass and other materials, by low-pressure perforation and high-pressure cutting. When cutting with nitrogen, the change of the gas flow has a great impact on the cutting performance, in this case, make sure the gas flow is sufficient and constant. Nitrogen is usually vaporized from liquid nitrogen provided by supplier, so the quality should be clean.
3. Air
Air, as it's the most economic medium because it's much easier to obtain than oxygen and nitrogen, nobody can charge you for air!
Every one knows the air contains about 20% oxygen and about 78% nitrogen, so it can make up for both shortage and cutting speed is slower than oxygen but faster than nitrogen. Since the oxygen is involved, the kerf turns a little bit yellow. It's the most economic option for you as long as you are okay with the color change.
Generally compressed air can be used for cutting sheet-metal parts, aluminum sheet, nonmetal and galvanized sheet etc., air assist can certainly reduce the oxide film and absolutely save your cost, therefore, air assist is more and more equipped in fiber laser cut industry.
Compressed air can be obtained easily with an air compressor, but not any air compressor can be equipped for Fiber Laser Cutter as the Air itself is not clean, especially after compressing, there are plenty of water, oil and particles and any of them sprayed on the lens, the transmission of laser beam will be seriously affected and focus scattered, resulting bad cutting effect such as bottom burrs or rough kerf, even obsolescence.
Situation could be much worse if it is high-power fiber laser, even a tiny particle or a little spray will very possibly burn your entire lens cone.
In order to make the most economic (Air assist) way workable, ensure cutting quality and avoid any damage for your fiber laser, the compressed air must be pure and constant, 100% meet ISO 8573-1-2010 standard.
Dehaha 4-in-one (Compressor + receiver tank+ dryer + filters) high pressure air compressor is special compressor for Fiber Laser Cutting industry, custom built to provide filtered, dried, continuous reliable supply of high pressure compressed air at 2~10ºCdew point to assist laser cutting. Produce your own assist air at a fraction of the cost of cylinder.
Technical Parameters
DBZY/DMZY Series(Combined with air dryer and tank) Screw Compressor | |||||||||||||||
| Model | Air flow Capacity(m3/min)/cfm | Power kW/HP | Noise DB(A) | Diameter Inch | Dimension W×D×H mm | Weight kg | Tank L | ||||||||
| 8bar | 10bar | 13bar | 16bar | ||||||||||||
| m3/min | cfm | m3/min | cfm | m3/min | cfm | m3/min | cfm | ||||||||
| DBZY-7.5A | 0.84 | 29.6 | 0.75 | 26.5 | / | / | / | / | 5.5/7.5 | 65 | G3/4'' | 1418×700×1500 | 375 | 260 | |
| DBZY-10A | 1.2 | 42.4 | 1 | 35.3 | 0.84 | 29.6 | 0.61 | 21.5 | 7.5/10 | 65 | G3/4'' | 1418×700×1500 | 395 | 260 | |
| DBZY-15A | 1.6 | 56.5 | 1.4 | 49.4 | 1.2 | 42.3 | 1.05 | 37 | 11/15 | 65 | G3/4'' | 1882×790×1731 | 560 | 500 | |
| DBZY-20A | 2.3 | 81.2 | 2 | 70.6 | 1.6 | 56.5 | 1.41 | 49.8 | 15/20 | 65 | G3/4'' | 1882×790×1731 | 572 | 500 | |
| DMZY-10A | 1.2 | 42.4 | 1.0 | 35.3 | 0.84 | 29.7 | / | / | 7.5/10 | 65 | G3/4'' | 1418x700x1500 | 395 | 260 | |
| DMZY-20A | 2.3 | 81.2 | 1.8 | 63.6 | 1.6 | 56.5 | 1.41 | 49.8 | 15/20 | 65 | G3/4'' | 1882x790x1731 | 572 | 500 | |
| DMZY-30A | 3.6 | 127.1 | 3.2 | 113 | / | / | 2.41 | 85.1 | 22/30 | 68 | G3/4'' | 1882x1081x1801 | 630 | 500 | |
2. Working Environment temperature: -5ºC~45ºC;
3. Discharge temperature is less than ambient temperature +10ºC~15ºC;
4. Drive Mode: belt driven;
5. Startup Mode: direct start under 11kw, and above 11kw;
6. Work Power: 380V / 50HZ, 460V / 230V / 6KV and 10KV voltages can be made for customers;
7. F.A.D volume flow test is according to ASMC PTC9 or ISO1217 standard (GB/T3853)
Certificate
Project Case
Customer Feedback
Packaging and Shipping
• Packing Details: Plywood crate pallet plus foam board and bubble film, Full closed wooden case. 1pcs/each package (for stationary screw air compressor)
• Shipping method: by sea, by LCL/FCL or as requested
• Delivery method: FOB, CFR, CIF and EXW etc.
• Delivery time: in 7-15 days after receiving deposit (customized machines not included)
About us
Dehaha Compressor Jiangsu Co.,Ltd.was founded in 1996 with over 150 skilled employees and more than 25 R&D engineersteams ' .We focus on the research & develop,manufacture and energy-saving solutions of screw air compressor to create value for customers and society.In 2018 our total sales volume approached 15 million US dollars.By over 23 years enhanced experiences of designing, producing and marketing,today our valued customers are over 130 countries.
Germany Standard and 13 years exporting experience help us won more than 50 loyal overseas agents.
Dehaha's primary businesses focus in following key areas:
Oil-injected rotary screw compressors
Portable screw air compressors
Oil free air compressors
High pressure air compressors
Air treatment equipment
At Dehaha,we earn our customers' trust and satisfaction by manufacturing the superior quality compressed air products for all industries.All of our products are designed for reliable performance,easy maintenance,and maximum energy efficiency.We have sales representatives who can speak English,Spanish,French,and Russian which makes it easier for our clients from all over the world to interact and negotiate with us.
Dehaha continuously innovates product development and management to meet customers' demand.The powerful enterprise culture and continuous innovation make Dehaha improved rapidly to reach the business principle"Energy Saving First, Mutual Value Shared". Dehaha mission is to be a world-renowned high-end brand,with sustainable development,constantly improving its own value and sharing it with our customers and staff.Committed to offer our customers a silent and energy-saving manufactured products.
Our Service
1.24/7 after sales service support in different languages.
2.Follow up the feedback of products in 2 months interval by email or call.
3.Guidance of installation and commissioning on site can be provided by factory-trained technicians or local Authorized Service Center.
4.Technical training for customers in DEHAHA air compressor factory or working site.
5.Plenty of original spare parts with proven quality are all available from our central stocks in Shanghai and all distributors'depots.
6.All kinds of technical documents in different languages.
After-sale Service
• Any questions or requests before, during or after sales, we would like to help you any time and will find you the best solution in 24 hours.
• Warranty: One year for the whole machine Genuine spare parts will be provided with the best price.
• An overboard engineer service is available.
Overseas Engineer Service
• We are available to send our engineer for aboard service. Only need you to arrange accommodation, transportation, and translator. The extra cost for each will be discussed based on the local price level.
Special Customized Service
(1) Full OEM
• Quantity: at least 5 pcs
• In this plan, we will do all the changes (Color, nameplate, and logo) as your need, and will not charge extra fee.
(2) Half OEM
• Quantity: no limit
• Under this program, we can make the necessary alteration (nameplate and logo) but we will charge some extra fee for the nameplate, as the nameplate factory has the MOQ.
(3) Logo OEM
• Quantity: no limit
• Only the logo will be changed to yours, and no extra fee will be charged.
FAQ
Q1. Are you trading company or manufacture ?
A: We are professional manufacture of screw air compressor of Jiangsu, China, more than 24 years.
Q2. How long is the delivery time ?
A: For standard voltage ,15 working days. Non-standard ,please contact our sales.
Q3. What's payment term ?
A: T/T, L/C, D/P, Western Union, Paypal, Credit Card, and etc. Also we could accept USD, RMB, Euro and other currency.
Q4. How about your after-sales service ?
A: 1.Provide customers with installation and commissioning online instructions.
2. Well-trained engineers available to overseas service.
3.Worldwide agents and after service avaiable.arrange our engineers to help you training and installation.
Q5. How about your warranty?
A: One year for the whole machine and two years for screw air end, except consumable spare parts.
Q6. Do you have any certificate ?
A: Yes, per different customer's market need ,we can offer CE ,ISO etc certificate.
Q7. What about the maintenance ?
A: First maintenance need to be done after 500Hours, and then every 2000-3000 hours to do the normal maintenance, and consider the actual environment.
Q8. How do you control quality ?
A: 1.The raw materials are strictly inspected
2. Some key parts are imported from overseas
3.Each compressor must pass at least 5 hours of continuous testing before leaving the factory.
Q9. Do you offer OEM service ?
A: Yes.Both OEM & ODM service can be accepted.
Q10.How long could your air compressor be used?
A: Generally, more than 10 years.