Tiếng Việt
1. What is XADO technology, in simple terms?
XADO technology is a method that uses a new ceramic-metal material to strengthen metal parts in machinery, restore their wear and protect them against further wear, all while the machine is running.
2. What kinds of machinery does it apply to?
Any mechanical machinery: new machines, machines on the assembly line, and older equipment already in service with wear below 100%.
3. What are the benefits?
It costs far less than the methods in use today. It brings the machine up to its design quality and keeps it in good technical condition two to three times longer than before.
4. In practice, how does XADO differ from existing repair methods?
It is simpler. There is no need to dismantle the machine or halt production; it is done while the machine runs normally.
5. Why does durability rise two to three times after XADO treatment?
The essence of the technology is that it forms a ceramic-metal layer on both surfaces of the friction pair. The newly formed cermet-on-cermet contact is of higher quality and more durable than before, with a very low friction coefficient of 0.003 to 0.007, so the rate of wear drops to a minimum. As a result, performance and durability last far longer.
6. When should XADO not be used for restoration?
XADO should not be used in the following cases:
- Mechanical damage, such as breakage, cracks, chips, deep scoring or pitting, or warping
- Wear exceeding 100%
- A weak friction pair
- Contact between a metal and a non-metal
- Magnetically charged metal mechanisms
- Parts lubricated by porous impregnation, such as oil-impregnated bushings
- Mechanisms that rely on the friction effect to work
7. So machinery worn beyond 100% can’t use XADO technology?
XADO is not recommended for wear above 100%. When such cases have to be dealt with, the conventional approach is used first, repairing or replacing the most heavily worn parts, and XADO is applied afterward. This is a common situation in Vietnam.
8. Does XADO technology have any drawbacks?
Like any technology, it has both strengths and limits. Used correctly within its range, it is highly effective; pushed beyond the recommended limits or used incorrectly, its effect is limited or absent. Technology is applied through people, so technicians who lack the necessary skill can also be a cause of failure.
9. After using XADO, when is reapplication needed?
The failure-free service interval becomes much longer than before. To keep the machine in good condition, reapply whenever you notice the technical parameters fall about 20% below standard, or below the level right after restoration, using half to two-thirds of the original dose.
10. Why does it save fuel and electricity?
The technology can save 5 to 30% on fuel and up to 30% on electricity. This comes about because:
- The clearances reach their optimum during operation
- The friction coefficient drops sharply
Friction losses are cut by 30%, so the system runs at its most energy-efficient setting.
11. What do new machines, or machines on the assembly line, gain from XADO?
Every machine, once built and assembled, is only an approximation of its design. With an advanced manufacturing process the deviation is small; otherwise it is large, and quality depends on that deviation.
XADO technology strengthens the metal friction surfaces with cermet while also compensating for manufacturing error, so the assembly clearances reach their optimum during operation, ensuring the machine meets its design specifications with high durability.
Real-world use at motorcycle assemblers and engine makers in the south has proven this.
XADO Vietnam has a XADO treatment procedure that works very well in production; it has already been transferred to several firms and is ready whenever a customer asks for it.
12. Which engine parts does XADO Moto act on?
Used on a motorcycle engine, XADO acts on the cylinder, the bearings, the journal supports, the primary and secondary shaft ends, the crankshaft, the gearbox gears, the driving and driven gears, and the connecting-rod bearing.
Parts that receive little lubrication, such as the cam, valves, cam chain and cam gear, see little effect. The piston rings, because of their springy action and the small contact area against the cylinder, are also affected little.
Parts such as the clutch, a metal-to-non-metal contact, and the kick-start shaft, which has no friction, are neither acted on nor affected.
13. Can an overdose seize the machine?
No. Once the optimum clearance is reached, the friction between the two cermet surfaces of the pair is very small, and the energy produced is no longer enough to form more ceramic-metal. No further coating builds up, even if there is still XADO in the oil.
14. Should XADO be used on Chinese motorcycles?
The market is full of motorcycle brands at prices that differ several times over. You get what you pay for: cheap bikes are built on low-grade production lines with poor strengthening and large tolerances, so they are low in quality, weak, heavily vibrating, noisy, unable to reach high speeds, and quick to wear out. Using XADO on these bikes is very worthwhile and gives excellent results.
15. I’m used to fixing things only when they break. XADO recommends treating early, before wear reaches 100%. That can be hard to accept.
Perhaps a few points are worth agreeing on first. Running machinery and vehicles in good, durable technical condition is economical and effective, the user is always satisfied, and costs come down. Operating a machine means wearing it, and heavy wear leads to breakdown. And a machine that still runs is not necessarily still good; what matters is the technical condition it is running in.
These points are probably easy to agree on. Fixing things only when they break has become the common habit today. That made sense when the economy was hard, parts were scarce, and technical facilities were few. At first glance it seems thrifty, but it really isn’t. Technical-assurance practice also covers scheduled and preventive maintenance and repair, an approach applied widely around the world because it is more effective.
XADO recommends early treatment, before wear reaches 100%, to achieve the best restoration. That benefit lasts two to three times longer than before, sharply lowering repair costs and saving fuel, energy, spare parts and the like, and part of those savings offsets the cost of using XADO.
17. How do Vietnam’s scientists view XADO technology?
Many Vietnamese scientists and technical experts have taken an interest. Students have written graduation theses and postgraduates have defended master’s theses on XADO technology, and the technology is easy to verify in practice.
Neighboring countries such as Thailand, Malaysia and Taiwan came to XADO later than Vietnam, yet quickly put it into wide use. We do not yet have an industrial culture and are rather slow to take up new scientific and technical advances, one of the reasons we have fallen years behind the world in technology.
XADO technology has very broad application potential and high techno-economic value for both users and society, and it deserves study so that it can be applied well to Vietnamese practice.
The Master of Science thesis “Research on Applying XADO Technology to Extend the Service Life of Mechanical Machinery and Equipment,” by engineer Mai Van Tinh of Ho Chi Minh City University of Education, under the supervision of Assoc. Prof. Dr. Phung Ran:
The author analyzed and systematized the issues surrounding the need for newer, more advanced and more effective repair methods in the mechanical field. He chose XADO technology to address the problem, based on a close analysis of the technology and of practical results in Vietnam and abroad. To confirm that this choice was sound, he ran a controlled comparison on a single-stage, two-compartment gear transmission of his own design. One compartment had XADO in the oil, the other did not. The gears were made of the same material, normalized Grade 35 steel. After 300 hours of operation, he measured the hardness and took micrographs of the tooth surface layer.
The result: surface hardness on the XADO-treated teeth rose by 126.7 HV. The micrographs also clearly showed a new crystalline layer forming on the surface, with no boundary or delamination from the material beneath.
This was the first scientific study of XADO carried out in Vietnam. XADO Vietnam congratulates the author on his success, and thanks his supervisor, Assoc. Prof. Dr. Phùng Rân, along with the scientists on the thesis defense committee, for their interest in XADO technology. There is probably room for many more applied studies of XADO for Vietnamese practice, and we hope Vietnam’s scientists and technical experts will join us in the work.
Big-bore motorcycles on a cross-country run
A big-bore motorcycle ran beautifully on XADO over an entire cross-country journey. The motorcycle escort team for the 30 April 2003 Cross-Vietnam Cycling Race, the HTV Television Cup, included ten big-bore bikes of 250 to 750cc running on XADO. They ran smoothly and powerfully over the full journey of nearly 2,000 km, saving an average of 30% on fuel and staying smooth even at the high speeds they often reached.
One 250cc twin, ridden by a reporter, lost the spark in one cylinder somewhere in the central region but kept running at high speed without his realizing it; only when the exhaust smoke turned too black did he stop to check and find the problem. Even after he sorted it out, the bike still smoked heavily, and people said it was done for, with no way it would reach the finish. But there was nothing else to do: the reporter had to keep going, and he ran neck and neck with the others, climbing the pass up to Đà Lạt and back down again to Ho Chi Minh City. When the engine was opened up, the cylinder was still fine and unscratched; only the piston was badly burned and scored, from running too long under uneven load, more than 100 km, with one cylinder dead. Oil had been forced up into the combustion chamber, which is what turned the exhaust black. Had XADO not been used, the bike would of course have been finished, with no chance of completing the journey.
For more on XADO, see Wikipedia.
https://en.wikipedia.org/wiki/XADO
https://en.wikipedia.org/wiki/Revitalizant
