Retour sur investissement des opérations d'élimination des revêtements au laser
Coating removal is an ablative process applied to a variety of substrates, including composites, glass, plastics, and metals. Also, it involves several costs. Research and several studies are comparing coating-removal processes. This article highlights the financial payback of the coating removal operation to help you fully understand the associated finances.
Components of Coating Removal Operations
The financial analysis of coating removal operations involves several components which are listed below.
1. Cela nécessite un coût en capital pour l’équipement, les enceintes et les structures nécessaires.
2. Il comprend également le coût de la main-d’œuvre ainsi que les opérations, les heures de travail, la formation, le nettoyage, les frais généraux de main-d’œuvre et les blessures prévues au travail.
3. Il y a également un coût d'élimination des déchets comprenant la collecte, le transport, le stockage, le déversement, les taxes, la main d'œuvre associée et les frais liés aux éléments dangereux.
4. Il comprend également le coût hors service de l’équipement entretenu.
5. L’équipement a également un coût en cas de dommage.
6. Les coûts de traitement concernent également les fournitures, les outils, les matériaux et l’électricité.
Il existe des recherches comparant les LaserBlast-200 to standard methods of surface preparation and coating removal. Stripping rate is one of the factors that significantly affect operational readiness, flow production, and inventory availability. One comprehensive study reported the following comparative results.
| Tarifs de décapage | Technologies |
| 0,03 à 0,22 pi² par minute | Explosion médiatique |
| 0,05 à 0,07 pi² par minute | Explosion médiatique |
| 0,002 à 0,005 pi² par minute | Application chimique |
| 0,0017 à 0,07 pi² par minute | Meulage ou ponçage à la main |
| 0,80 pied carré par minute | LaserBlast-500 |
Les taux de décapage sont entièrement calculés pour le sablage au jet d'eau, le meulage et le ponçage manuels, le sablage à l'eau et l'application chimique, tirés de l'étude du Joint Group on Pollution Prevention Study, 2001. Les taux de décapage des bandes sont normalisés à une épaisseur de revêtement de 1 mil.
The strip rate of the LaserBlast-200 is determined by the laser system's average pulsed power. The formula for calculating the LaserBlast-200 strip rate is given below.
Remarque : un mil = 0,001 pouce
Therefore, the strip rate for LaserBlast-200 is 0.80 sq. ft./min, with 500W strips used as the average pulsed power.
The strip rate of the LaserBlast-200 contributes significantly to eradication. Furthermore, several additional research studies are used to derive the summary of the total effective cost of aircraft fuselage decoating. Check out the table below to see the effective cost per sq. ft
| Titre de l'étude | Titre de l'avion | Méthode appliquée | Coût effectif/pi2 |
| Fiche de données sur les possibilités de prévention de la pollution[1] | Chasseur F-4 | Explosion de médias en plastique | $5.00 |
| Fiche de données sur les possibilités de prévention de la pollution | Chasseur F-4 | Solvant chimique | $10.00 |
| Bulletin d'information de l'AMTIAC, hiver 1001[2] | Entraîneur T-45 | Explosion de médias en plastique | $11.00 |
| Manuel de prévention de la pollution des services conjoints[3] | Entraîneur T-38 | Ponçage à la main | $13.00 |
| Manuel de prévention de la pollution des services conjoints | Entraîneur T-38 | Solvant chimique | $18.00 |
| Bulletin d'information de l'AMTIAC, hiver 1001 | Entraîneur T-45 | Solvant chimique | $22.00 |
The effective costs (fully burdened) include preparation time, labor, power consumed, damage-prevention precautions, consumable material costs, and amortized equipment costs. All these costs are standardized to contemporary times, based on the references and published sources.
Allied Scientific Pro offers a fully burdened LaserBlast-200, with an average effective cost of $2.00 to $3.00 per ft2, based on site-specific variables. There is a reduction in the effective cost, resulting from current shipping methods that ensure rapid payback. There are several other advantages of the LaserBlast-200 that can be equally significant, such as reduced toxic emissions, reduced operator exposure, the ability to process surfaces, and the ability to develop solutions, along with improved operational readiness. However, examples of the abilities required to process surfaces include irregular, complex, fragile, and inaccessible surfaces, which are difficult to achieve with conventional methods.
De plus, chaque situation est différente. Pour toute question, n'hésitez pas à nous contacter.
Heures de travail qualifiées
There is one operator per system for an hour, as required in the manual for Un LaserBlast-200 d'Allied Scientific Pro . The operator can do both, operate the system and maintain it too. However, the maintenance of the operation primarily consists of changing and checking the specific filter as required. However, the system can efficiently be operated by a semi-skilled laborer. The training is an hour long. In addition, the total number of man-hours required to complete a stripping job is based on the stripping rate. That is later used to evaluate the laser’s power output.
There are additional considerations to keep in mind when comparing with other methods, including the following.
Vêtements défensifs
The majority of conventional methods, including media blasting, scraping, sanding, and solvent use, require protective clothing, and in some cases, respirators and supplied-air systems. However, toxic exposure still occurs despite breathing precautions and protective clothing. The Allied Scientific Pro’s LaserBlast-200 does not require any protective layering or clothing except glasses or eyewear, which ideally costs about $200 per operator.
Moins de risques de blessures
The rough methods, i.e., sanding and scraping, lead to severe injuries. However, with Allied Scientific Pro’s LaserBlast-200, these chances of injury are eradicated.
Réduction des coûts d'élimination des déchets
One of the unique benefits of the Allied Scientific Pro’s LaserBlast-200 system is the ability to detect particulate material in the filtered paper. With this capability, the problem of waste disposal is simplified. Additionally, Allied Scientific Pro only requires the monitor and the change of the paper HEPA filter, as required, to capture the ablated material, instead of controlling, capturing, shipping, and disposing of the tons of contaminated liquid solvents. However, only some of the contaminated filters containing captured particulate would be considered waste and require disposal.
Additionally, only 12% of the stripping, by weight, is generated by the LaserBlast-200, which is as much waste as the media blast, while 0.3% is solvent stripping. So, this ensures that LaserBlast-200 captures waste in dry paper filters, simplifying and reducing waste disposal costs in an easy-to-handle way.
Coût de mise hors service réduit
The out-of-service cost is the cost of extra equipment, filling out-of-service periods, or loss of service. Most of the time, the Allied Scientific Pro's LaserBlast-200 is a perfect fit from other perspectives. Additionally, it ensures greater speed than other conventional approaches, resulting in reduced out-of-service costs. It is common to achieve a tenfold reduction in out-of-service expenses; however, the exact time you save with LaserBlast-200 depends on your specific case.
Aucun dommage potentiel
The potential for damage is again a chief and beneficial feature of the Allied Scientific Pro. There is zero percent possibility your substrate will be damaged using the Allied Scientific Pro’s LaserBlast-200 technology. However, there are other methods you can use that could be very problematic for your substrate's condition.
Media Blast
This method is known for its high risk of damaging fragile substrates. These fragile substrates are composite fuselages and thin aluminum. Due to the high risk of damaging the fragile substrates using the Media Blast method, the aircraft can be blasted only once. On the other hand, the LaserBlast-200 technology has no limit on the time you can clean your substrate. However, the durable substrates, like a ship’s hull, should be blasted at least twice. The first blast should remove the coating, while the second should restore the profile needed for the new coating to be optimized and accepted. While the LaserBlast-200 only removes the coating, it leaves the substrate surface in a virgin condition, ready for new coatings without further issues during the process.
Furthermore, the remaining LaserBlast-200 methods and processes that do not use Allied Scientific Pro’s controls have resulted in surface reflows of high-strength steels, which have reduced ductility, increased rigidity, and decreased overall strength.
Solvants et grattoirs
These are used in OEM manual maintenance of the fuselages. If used improperly, scrapers can severely damage the surface. However, the aluminum, which is solvent-softened, can be vague to the previously existing cracks. This is why they are undetected during the testing method. Also, the use of highly concentrated solvents, when combined with the metal substrates, results in deterioration of the structure.
Avec un LaserBlast-200 d'Allied Scientific Pro, you will be protected from surface damage, using sophisticated real-time, in-line sensing before every pulse to detect the target coating. When the sensors detect the desired condition (Shininess, color, roughness, or any other condition), the pulse is prevented from firing.
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Références :
[1] http://www.p2pays.org / ref / 01/00597.pdf
[2] http://amtiac.alionscience. com/ pdf/ AMPQ5_4.pdf#ART02
[3] http://p2library.nfesc.navy.mil / P2- Opportunity_ Handbook/8_1_7. html