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In-line chemical paint stripping of hooks and frames within the coating process

More and more coaters are choosing to paint strip the hooks and frames employed in their coating operations to avoid using them as disposable items. The standard method requires stopping production so they can be removed, replaced with new ones, and paint stripped separately. Aware of the importance of working with a continuous flow, however, ALIT Technologies has designed a plant that fulfills this task without interrupting the manufacturing cycle. FASTRIP ISP was conceived precisely to tackle the challenge of integrating the hook and frame paint stripping phase into coating lines.

    1. Hanging frames used for industrial coating operations

As mentioned, many companies today need to remove the paint residues deposited on their coating tools, including hanging hooks, load bars and frames, through a paint stripping operation aimed at re-using them.

But why do hooks and frames need to be cleaned?

Especially when it comes to electrostatic coating, the excellent electrical conductivity of the parts is of the essence. However, this can be significantly undermined by any impurities and paint layers deposited on the hooks and frames and acting as electrical insulators. Decreased conductivity also increases overspray, thus likely affecting the coating results. Therefore, paint stripping hooks and frames allows companies to re-use these accessories countless times without incurring the cost of buying new ones while ensuring flawless finishes.

FASTRIP ISP is ALIT Technologies’ solution for perfect in-line paint stripping of hooks and frames

Recognizing the importance of this process, ALIT Technologies accepted the challenge of developing an efficient solution for paint stripping hooks and frames. With this goal in mind, it designed and built FASTRIP ISP. Thanks to its modular design, this in-line chemical paint stripping system for hooks and frames can be easily integrated into existing production lines, ensuring the continuity of the coating cycle.

2. An example of a customized FASTRIP ISP machine for in-line paint stripping of hooks with a connected filter press

How is FASTRIP ISP made, and how does it work?

The FASTRIP ISP paint stripping system consists of two main units: the paint stripping tank and the FASTRIP FP series filtration system.

The tank is made of AISI 304 steel and contains an adjustable volume of paint stripper, which is simultaneously heated and subjected to ultrasonic waves. The combined effect of the chemical attack by the paint stripper, high temperature, and ultrasound allows removing a paint layer in as little as 3 minutes. While remaining hooked onto the overhead conveyor, the items to be paint-stripped are partially submerged into the stripping tank as they pass through. The tank’s linear length is proportional to the coating line’s speed, usually within a range of 4-8 meters. The paint stripping product is heated by electric heating plates attached externally to the tank, guaranteeing high standards of safety and ease of maintenance at the same time. The ultrasonic batteries are also externally flanged, easy to access, and highly robust. The tank is insulated to minimize heat loss and its shape optimizes sludge filtration.

The FASTRIP FP series filtration system is connected to the paint stripping tank and allows consistent removal of the coating sludge that accumulates in the bath. Sludge is continuously removed from the tank’s bottom and filtered with a filter press. The clean paint stripper can then be automatically recirculated to the paint stripping tank. The configuration options of the filter press, liquid tanks and piping are extremely varied and can be customized according to customer needs.

Adding a water rinse module to remove any paint stripping oil residues and an infrared lamp system for drying is also possible.

What are the advantages of this plant?

The benefits of using FASTRIP ISP for paint stripping hooks and frames are numerous:

  • the system enables to perform paint stripping operations without removing the hooks from the chain;
  • the process is easier to manage, as there is no need for downtime to clean the tank;
  • the labor involved in managing the hooks (i.e. cyclically removing the dirty ones and positioning the clean ones) is significantly reduced;
  • hooks and frames are always clean;
  • thanks to its modular design, the system can reach any length, as well as a hook and frame immersion depth of up to 30 cm.
  • FASTRIP ISP can be used for paint stripping any metal because it is not aggressive to surfaces, even with light alloys. Hooks and frames will always be as good as new!

The ideal chemicals for FASTRIP ISP

One of the goals of ALIT Technologies is to offer complete systems that provide all-round solutions. The market demanded a plant capable of paint stripping the hooks and frames used in coating processes – and the ALIT team met this need by designing and launching FASTRIP ISP. Of course, this type of plant also requires the use of chemical agents, so ALIT Technologies also developed a wide range of paint stripping products that guarantee optimal results when combined with the FASTRIP ISP system. These include as follows:

  • 14XX Series METALSTRIP

These paint strippers are used to fill the tank during the plant’s start-up. Usually, their use is limited to this phase.

  • 16XX Series METALSTRIP AKTIVATOR

They are used routinely to feed the paint stripping tank during regular operation. They should be added periodically to maintain optimal bath chemical parameters. The operator determines the quantities to be added through a simple chemical analysis of the bath.

  • COVER LAYER Series METALSTRIP

This non-toxic liquid forms a floating layer of about 4 cm above the paint stripper in the tank. It helps reduce heat loss and odor emissions and preserve the paint stripper from contact with air.

  • METALSTRIP 1465

This new product has improved fluidity and sludge settling capacity characteristics. One of its main features is its full compatibility with ALIT Technologies’ other paint stripper series, meaning that it can be added directly into the FASTRIP ISP tank, gradually replacing the product used previously without the need to refill the tank completely.

All these products are part of ALIT’s METALSTRIP product range, and in addition to providing excellent performance, they meet strict environmental sustainability requirements.

A case study testifying to the effectiveness of FASTRIP ISP

Background

A major company in Northern Italy producing and marketing wire mesh, fences and gates asked us to supply two complete FASTRIP ISP plants for paint stripping its hooks and frames. The paints to be removed were polyester coatings and the size of the hooks ranged from 70 cm in height to 50 cm in width.

The issue

The company had two already existing coating lines: due to space constraints and the chain’s layout, we had to design two custom plants with elevated paint stripping tanks.

Our solution

ALIT’s Engineering division conducted a detailed geometric survey of the space available and the overhead conveyor in the area of interest. It then presented the customer with a design that was gradually refined until approval. The paint stripping and filtration areas were designed to fit into the existing spaces without interfering with the adjacent coating and robotic unloading areas.

With regard to automation, it was agreed that the plant would comply with INDUSTRY 4.0 standards. The main switchboard was equipped with advanced technologies to exchange process data with the customer’s management software and allow for remote service and monitoring. The wiring and insulation materials on board the machine were selected based on ALIT’s experience in the paint stripping industry, balancing the required chemical and thermal resistance characteristics.

The company protagonist of this case study has undoubtedly obtained many benefits from its new FASTRIP ISP. In addition to radically decreased costs, opting for this plant from ALIT Technologies has enabled it to lower its environmental impact, reduce its long-term costs and increase its turnover by eliminating the need to stop the coating line.

Would you also like to implement such an innovative system for your business?

Get in touch with the ALIT team: together, we will identify the most suitable solution for your production needs!

Waste water: an issue in the aluminum surface treatment industry turned into a challenge for improved environmental sustainability

Most companies performing aluminum surface pre-treatment operations use products containing high levels of fluorides, which call for special water purification treatments. However, especially today, in an era marked by pollution, it is necessary to embrace more and more sustainable practices – even in the aluminum industry.

An example of a waste water purification tank

From a legislative point of view, European regulations set maximum limits for the presence of fluorides in waste water. In Italy, for example, up to 6 ppm are allowed in surface discharge water and 12 ppm in waste water discharged into the sewerage system (subject to specific regional restrictions). This is why the treatment of process water is an indispensable production step in the aluminum industry. However, the traditional purification cycle based on an acidification phase followed by neutralization with lime often fails to achieve such low fluoride concentrations, even with prolonged cycle times. Sophisticated purification systems are therefore designed for this purpose, capable of removing specific pollutants.

If one of the challenges of today’s industry is to pursue productive growth while preserving our planet, the mission of Alit Technologies is to offer advanced technologies to reduce its customers’ environmental impact, generating a synergy that can lead to significant progress and improvement.

The Fluoridite series: high-quality products for waste water purification

Implementing clear strategies is key to achieving one’s goals. This is why Alit Technologies’ experts have devised an innovation that makes it easy to comply with the limits for the presence of fluorides in waste water. Their research work resulted in the creation of the Fluoridite series, an effective solution to tackle this challenge.

Fluoridite is a liquid product formulated to break down fluorides in waste water in the aluminum, steel, and glass industries. This agent can be added to the baths during the purification process, allowing fluorides to be removed from the treated water.

It has an exceptionally high efficiency and it can be easily used in already existing plants without the need to change their layout or waste water circulation system. After installation, it requires only a few adjustments to ensure that the discharged water’s fluoride concentration is below 2 ppm.

The effectiveness of Fluoridite in three actual industrial settings

When it comes to products intended for industrial use, it is always particularly interesting to analyze them in actual production contexts where their properties can be put to the test.

The three case studies collected below not only demonstrate the effectiveness of Fluoridite in keeping fluoride levels below regulatory limits for both sewage and surface discharge water, but also offer some examples of concrete applications that may be useful in understanding how this product works.

The initial problem

As already pointed out, the basic issue reported by companies is the need not to exceed the legal limits for the concentration of fluorides in waste water. This also results in a production issue since, in order to comply with these regulations, manufacturers can be forced to reduce the use of products containing hydrofluoric acid and its derivatives and, consequently, limit their production flow.

Success cases: contexts and solutions

The first success case we would like to present concerns a company headquartered in northern Italy, which coats about 15 tons per day of aluminum every 8-hour shift. It now uses Fluoridite for its purification process. The production line includes alkaline, acid, and non-chromic passivation pre-treatment stages and the purification plant handles 5 m3/h of cleaning water. Fluoridite’s dosage is about 800 ppm in the first tank, followed by neutralization with lime to pH 8 and flocculation. Thanks to the use of Fluoridite, the clarified water always has fluoride values below 9 ppm, i.e. below the legal limit of 12 ppm for discharge into the sewage system.

The protagonist of the second success case is another Italian company specializing in the coating of aluminum profiles and sheets, which processes around 60 tons per day in three 8-hour shifts. The company has two surface pre-treatment lines, one performing acid degreasing/deoxidation and non-chromic passivation and the other alkaline degreasing, acid deoxidation, and non-chromic passivation. The purification line collects water from both plants (6 m3/h in total). To comply with the 6 ppm limit for surface discharge water, the dosage of Fluoridite here is approximately 3500 ppm.

The third case study concerns a company located in central Italy, specializing in the coating and decoration of aluminum profiles. It processes around 50-55 tons per day in three shifts with a treatment operation involving several stages. Waste water is conveyed to a purification plant using Fluoridite. The limit for fluorides, again equal to 6 ppm, is successfully achieved through the accurate dosing of Fluoridite in the purification tank, which has reduced the fluoride concentration in the discharged water from around 30 ppm to less than 4 ppm, thus safely meeting the legal limit.

The advantages of Fluoridite

The use of Fluoridite brings several benefits, including as follows:

  • Ease of dosage;
  • Compliance with legal limits;
  • Quick supply;
  • Dedicated technical support.

In summary, Fluoridite is a clear example of Alit Technologies’ constant dedication to research and development. It is the result of this company’s commitment to offer state-of-the-art solutions for a more sustainable and compliant industrial future.

And if it is true that collaboration in the industrial sector is of paramount importance in moving towards a greener future, Alit Technologies urges all companies dealing with the presence of fluorides in waste water to contact its specialized staff to identify the best solution to their specific needs.

Together, we can do more!

ALIT Technologies transforms into a Joint-Stock company

ALIT Technologies has announced the transformation from an S.r.l. to S.p.a. (the Italian equivalent of Limited Liability Company and Joint-Stock Company), stating its goal is the issuance of bonds that will allow the expansion of the business.

The Italian manufacturer of machines and products for metal surface treatment is pleased to announce that its growth process has led Alit to become a Joint-Stock company.

The company has registered a capital increase which, in conjunction with the new set-up, will allow a major control over management, thanks to the presence of three auditors, more diversified financial operations and the possibility of obtaining more liquidity with a view to continued growth, as explained by the CEO Loris Rossi.

ALIT Technologies S.p.A, grateful for the trust placed by all its stakeholders, today announces itself enthusiastic and positive in view of an increasingly bright productive future.

Growth Boom: ALIT Technologies Doubles Production Capacity in 2023!  

We are thrilled to share with you a significant update regarding the growth and evolution of ALIT Technologies Srl. As a company specializing in metal surface treatments, we are always committed to providing innovative and high-quality solutions to our customers, and today, we are pleased to announce that we have reached a new milestone in optimizing our production. 

With great pride, we inform you of the arrival of 5 new silos in our production facilities. This significant investment will allow us to double our production capacity and dramatically improve resource management. The new silos are equipped with state-of-the-art technologies that will enable us to optimize production processes, ensure continuous and consistent production, and track all production phases. This translates into increased efficiency and promptness in meeting the needs of our valuable customers and distributors, as well as delivering high-quality products to the market. 

But it doesn’t end here! Our relentless pursuit of excellence has driven us to invest in modern machinery to further enhance our performance. We have acquired a cutting-edge welding machine and a metal band saw, which enable us to work with precision and uncompromising quality. These new equipment pieces help us streamline and expedite the manufacturing processes and ensure that our products meet the highest standards. 

Our commitment to the environment is a core value for our company. With the implementation of the new machinery, we have also placed an emphasis on sustainability, striving to minimize the environmental impact of our operations. This is just one of the ways we are committed to being a positive force in the community and contributing to a greener future. 

Finally, we thank our dedicated internal collaborators for their commitment and dedication. You are the driving force propelling the company toward new milestones, and we are excited to share our success with you. We will continue to maintain our spirit of innovation, commitment to quality, and responsibility towards the environment as we look confidently toward the future. 

ALIT Academy Magazine n. 6 has been released

After showing all our innovations in the past issue, we now show our readers how we are developing and expanding in a global and competitive market through successful partnerships and transfer of knowledge and technology to our customers.

First thing first we would like to thank our customers and distributors for the great collaboration and organization they have demonstrated in the preceding months. As is the case every year, our company also closed for two weeks during the summer break. During this period, our foreign customers and distributors showed great understanding and flexibility by arranging things in a way that did not disrupt the supply of our products and services.

In this issue of ALIT Magazine, we will introduce another foreign distributor who has been working with us for several years: ITS (IDEAL-Trade Service spol. s r.o.). ITS is a leading company in the chemical sector in Slovakia with extensive experience and an excellent reputation. We are confident that we will continue to work well together and achieve high growth objectives in this beautiful country.

The magazine’s goal is to inform the public about all the internal activities and dynamics of the company, to communicate ALIT’s great dynamism. In this issue, we will showcase the ongoing work within the company. We are investing in new machinery and technologies to increase production capacity and automation in the packaging of chemicals. These investments will enable us to improve efficiency and product quality and better meet all your needs, always focusing on safety and corporate well-being.

You will also find three case studies of clients who have achieved tangible results using our chemical products. These success stories demonstrate how our products can help companies improve their production processes and reduce costs.

We are pleased to announce that we have earned the ISO 9001 certification, a significant recognition of the quality of our products and services. Above all, the key to this achievement and corporate growth is our internal organization. At ALIT, we are constantly striving to improve, analyse errors to correct them, and do better. The ISO 9001 certification assesses our ability to meet customer requirements and continuously improve our performance.

We are proud to confirm our sponsorship of VeronaVolley, one of Italy’s most important volleyball teams. We believe that this sponsorship can help us introduce more foreign people to this wonderful sport and especially to this amazing team that had an excellent championship last year. If you happen to be in Italy, give us a call; it will be our pleasure to host you and watch a VeronaVolley volleyball match together.

We extend a warm welcome to Fabio and Andrea, our two new colleagues. Fabio will be responsible for electrical design and development, while Andrea will oversee marketing and corporate communication. We are delighted to have them on board and are confident they will contribute to the success of our company.

These are just a few of the important updates we have to share with you. We are committed to continuous growth and improvement, and we are confident that we will achieve great milestones in the coming months and years together.

Enjoy the reading: https://www.alit-tech.com/alit-academy-magazine-en/n-6-september-2023/

ALIT Technologies will attend the ESTAL Congress 2023

ALIT Technologies is pleased to announce that it will participate at the ESTAL Congress, scheduled from 27th to 29th September 2023 at the Radisson Blue Béke hotel in Budapest, Hungary.

ALIT Technologies will be a speaker at ESTAL Congress, the bi-annual rendez-vous with the European Aluminium Surface Treatment Industry, which will be held from 27th to 29th September 2023 at the Radisson Blue Béke hotel in Budapest.

The major focus of this event will be on presenting sustainable solutions for aluminium surface treatment and on addressing the future challenges for this industry. The 2023 congress is expected to stimulate fruitful discussions and present new ideas for the aluminium anodizers and coaters. The topics include different subjects, such as best practices for powder coating and anodizing plants, innovative technologies for paint stripping or for measuring the aluminium thickness, latest developments in compact anodizing plants, biotechnology solutions for wastewater and chemicals in anodizing and coating plants, virtual-reality aided training for coaters etc.

Loris Rossi, CEO of ALIT Technologies, will hold the speech “Enhancing Efficiency and Quality in Aluminum Profile Recovery: The Chemical Paint Stripping Solution” during the last day of the Congress (September 29, from 3:30 pm to 4 pm). The presentation will highlight the use of chemical paint stripping for the recovery of aluminium profiles. ALIT Technologies will also introduce its Fastrip AP machine as the ideal solution to this problem.

ALIT Technologies waits for you at ESTAL Congress to discover more about its Fastrip AP and all its advanteges.

For further information: https://estalcongress2023.org/

ALIT Technologies looks forward to meeting you at Aluminium Two Thousand

ALIT Technologies is pleased to announce that it will participate at the 12° Worldwide Congress Aluminium Two Thousand, scheduled from 19 to 23 September 2023 at the Royal Hotel Carlton of Bologna, Italy.

ALIT Technologies will be present as speaker at Aluminium Two Thousand, the unmissable international conference on the world of aluminium, which will be held from 19 to 23 September 2023 at the Royal Hotel Carlton in Bologna.

The event consists of three days of conferences (from 19 to 21 September) with three parallel sessions dedicated to different topics including: market and analysis of the aluminum industry, foundry, casting, extrusion, anodizing and painting, automation, architecture, transport industry, environmental protection and recycling techniques, measurement, testing and quality: the great world of aluminium for an international audience. The last two days (from 22 to 23 September) will be dedicated to a series of side events, including workshops and guided tours around the city of Ravenna.

The ALIT Technologies team, during the three congress days, will hold a series of reports on different topics at the following times:

  • Wednesday 20 September from 11:30 to 12:00: “DRIZZLING: an innovative spray system for metals passivation” – Claudio Burato (Chemical Department Technical Manager).
  • Thursday 21 September from 11:00 to 11:30: “Enhancing Efficiency and Quality in Aluminum Profile Recovery: the Chemical Paint Stripping Solution” – Loris Rossi (CEO).
  • Thursday 21 September from 15:00 to 15:30: “CLARIS 9346 MB: Additive for the cleaning of aluminium extrusion dies” – Michele Merlo (Technical Sales Manager).

ALIT Technologies waits for you at Aluminium Two Thousand to present and deepen the latest discoveries, research and trends of the future.

For further information: http://www.aluminium2000.com/index.php/it/

ALIT Technologies will be closed from August 14 to August 25

ALIT’s offices will be closed from August 14 to August 25. Regular business activities will resume on Monday, August 28.

We would like to take this opportunity to wish you all happy holidays!

ALIT Technologies launches FASTRIP T2-120 MIX

ALIT Technologies is pleased to announce FASTRIP T2-120 MIX, the T2’s range most compact paint stripping system.

ALIT Technologies, a leading manufacturer of machines and products for the surface treatment of metals, is pleased to announce the launch of FASTRIP T2-120 MIX, an even more compact evolution of the T2 system, designed for an effective and a rapid paint removal.

Any company that coats metal parts in-house typically needs to paint strip two types of items: the frames or hooks used for hanging operations and any defectively painted workpieces. ALIT Technologies has developed the FASTRIP T2-120 MIX, the most compact paint stripping machine in the T2 range, in order to offer an efficient and space-saving solution.

“ALIT TECHNOLOGIES has developed FASTRIP T2-120 MIX based on its many years of experience in the paint stripping industry” says Loris, CEO of ALIT Technologies. “This machine does not use ultrasound, as the mechanical action of the paint stripper on the parts’ is ensured by the hydrostatic thrust generated by the mixer. The fact that ultrasound has been replaced by a mixer is precisely what distinguishes FASTRIP T2-120 MIX from our top-of-the-line model FASTRIP T2-100.  This makes the former a quieter machine that can also operate with a more polluted paint stripper; the absence of ultrasound also allows for the use of electronic components that are less sensitive to the heat developed during normal machine operation. Overall, these choices have resulted in the design of an extremely robust, reliable, safe, and well-functioning system”.

The process

With FASTRIP T2-120 MIX, paint stripping is performed by immersing the workpieces in a tank containing a liquid paint stripping solution that is heated and kept under constant agitation through a special paddle mixer. At the end of the paint stripping cycle, the basket containing the parts is removed from the process tank; after a rinse, these can be reprocessed normally.

The required process steps are the following:

1)Loading of the basket with the components to be stripped;

2)Manual immersion of the basket in the FASTRIP T2-120 MIX tank;

3)Paint stripping;

4)Manual extraction of the basket;

5)Dripping above the paint stripping tank;

6)External rinse of the treated workpieces.

Technical features

FASTRIP T2-120 MIX is made entirely of AISI 304 stainless steel and it includes the following elements:

– Rectangular paint stripping tank with a clear dimension of approximately 450 x 700 x h300 mm and 20/10 thick walls, with a filling volume of about 120 liters. It has a 1” stainless steel bottom valve for full emptying, a temperature sensor for the paint stripping fluid, and a liquid level sensor. It is also equipped with a 2” upper sleeve for possible connection to a suction system.

– Steel mixer located on the short side of the tank. It keeps the liquid constantly circulating to ensure greater stripping efficiency and better performance of the heating system. The coupling of the motor with the shaft is not direct, but it occurs through a belt-pulley transmission system that protects the motor against both direct heating by the liquid and vapours from the paint stripper.

Steel mixer.

– Electric heating elements fixed on the tank’s exterior wall, which allow the maximum temperature of the paint-removing liquid to be reached at 80°C.  The choice of placing the electric heating elements externally avoids direct contact between the paint stripping liquid and the heating source, thus meeting the highest safety standards.

– Lid entirely made of steel, complete with thermal insulation and 2 pistons to facilitate manual opening and closing operations. The lid’s closure is shaped in such a way as to collect the condensation formed on it during the paint stripping cycle.

– Electric lock ensuring that the mixer stops if the lid is opened.

– Integrated control panel and external electromechanical switches for process parameter management. The panel is located below the tank and mounted on a mechanical slide that allows it to be removed for inspection or maintenance operations. It enables to adjust the temperature of the liquid and of the heating elements and to control the electric lock and the mixer.

– Thermal insulation on all sides of the tank, made of rock wool with a high insulation coefficient.

– Side panel made of AISI 304 stainless steel, easily removable for maintenance.

ALIT Academy Magazine n. 5 has been released

To create the fifth issue of ALIT Academy Magazine, we asked ourselves what it really means to innovate in a rapidly changing world. Our answer to the question is within the pages of this issue, through which we retrace the recent advancements that added another milestone in our journey to innovation.

In this increasingly competitive global business landscape, companies are constantly seeking new ways to differentiate themselves and thrive. Innovation has therefore become a key word in this context. But what does it really mean to innovate in a rapidly changing world?

In this issue of ALIT Academy Magazine, we will explore the challenges and opportunities that innovation offers to modern companies like ours, focusing on the advancements in our machinery and the careful management we can have of our chemical products.

We will start by telling the story of a bold approach to innovation that has pushed us beyond the concept of simple paint stripping tanks, to offer customers a complete and ready-to-use automated service. The result is Fastrip T5 Multitank, a paint stripping tank followed by a rinsing tank and a loading-unloading station, all served by a manual overhead crane. In addition to this paint stripping solution, customers have the option to adopt a multifunctional trolley that allows for various uses, both for emptying solutions and for improved rinsing.

But ALIT’s innovation doesn’t stop there. Following the great interest received in 2022 for Fastrip T5, we have decided to invest in the improvement of the T2 line as well, developing the new Fastrip T2-120 Mix, a highly efficient and cost-effective small paint stripping tank, which you will find described in detail in the upcoming pages.

Lastly, we will tell you how this path of innovation, combined with ALIT’s longstanding commitment to internationalization, has led us to be recognized as Export Champions by the prestigious Italian newspaper Il Sole 24 Ore. This achievement confirms ALIT’s desire to be a leading player in the global market, and it would not have been possible without the trust given to us by our customers and the valuable collaboration of our distributors. We are especially grateful to all of you.

Enjoy the reading: https://www.alit-tech.com/alit-academy-magazine-en/n-5-magazine_alit_may-2023/

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