Coldside®: the tungsten carbide coating for ribbed wire drawing

In the metal wire drawing industry, there are applications where operating conditions are particularly demanding and require dedicated technical solutions. One of these is the drawing of ribbed wire for reinforced concrete, where the mechanical components of the system are subjected to high mechanical stress, continuous friction and dynamic loads that challenge any coating.

Within this context, Coldside® — the tungsten carbide hard metal coating developed by Paganoni — has been designed to meet the real needs of wire drawing plants producing ribbed wire with modified structure for reinforced concrete. Unlike other tungsten-based solutions, Coldside® is characterised by its ability to be applied to finished or worn parts, making it a strategic choice for both new components and the recovery of parts already in service.

Understanding when and why to use a cold-applied tungsten carbide coating means making an informed decision, based not only on the technical properties of the material, but also on the company’s production goals: reducing downtime, containing maintenance costs and ensuring consistent wire quality.

In this article we will explore in depth the ideal applications, key advantages and scenarios in which Coldside® represents the most effective solution, helping you understand whether it is the right choice for your drawing line.

Want to find out if Coldside® is suitable for your specific application? Contact the Paganoni team for a tailored technical consultation and request more information today.

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When to use a cold-applied tungsten carbide coating

Understanding when to choose a tungsten carbide coating such as Coldside® is the first real turning point to optimise the performance of a wire drawing plant. It is not simply about choosing a wear-resistant material, but about identifying a solution that can work reliably in conditions where other coatings show clear technical limitations.

The most representative application is found in capstans used for drawing ribbed wire for reinforced concrete, commonly known as rebar wire. This is a steel product designed for the construction industry, characterised by a surface profile with longitudinal and transverse ribs that ensure adhesion to concrete. Drawing this type of wire is particularly demanding: the combination of high mechanical loads, wire slip on the pulling area and cyclic impacts produces extremely rapid localised wear on uncoated components.

It is in this scenario that Coldside® delivers its full technical potential. Thanks to its super-compact structure based on tungsten carbides and rare minerals, this coating offers:

• high resistance to friction and wire slip
• negligible wear even under demanding operating conditions
• impact resistance typical of high-speed lines
• higher production speeds with consistent finished wire quality

Another factor that makes Coldside® particularly flexible is its applicability to already finished or worn parts. This means there is no need to manufacture new components: it is possible to act directly on existing capstans, depositing the coating on the worn area and restoring performance comparable — and often superior — to that of an unprotected new component.

In summary, choosing Coldside® means adopting a targeted solution for ribbed wire drawing, where the priority is to maximise capstan life without compromising the wire surface quality.

Not sure which coating is best suited for your production process? Contact Paganoni for a technical consultation and request customised information about the Coldside® coating.

The industrial advantages of the Coldside® coating

When we talk about high industrial performance, tungsten carbide coatings have for decades been a reference for wear resistance. Within this family, Coldside® stands out for a series of specific advantages that translate directly into concrete benefits for those managing a ribbed wire drawing line.

One of its main strengths is resistance to friction and slip. On lines where the wire runs at high speed across the pulling capstans, the surface coated with Coldside® keeps the coefficient of friction very low, reducing stress on the wire and improving flow. This translates into fewer micro-cracks, reduced vibration and greater process stability.

A second key benefit is impact resistance. In ribbed wire drawing, dynamic loads are unavoidable: the very nature of the wire, with its irregular surface, generates cyclic impacts on guide and traction parts. The super-compact structure of the coating, achieved with advanced technology, withstands these stresses without chipping or fracturing, ensuring long-lasting dimensional stability over time.

From an economic point of view, the use of Coldside® enables a significant reduction of operating costs. Components that last longer mean fewer replacements, less downtime and more predictable maintenance. Moreover, the ability to apply the coating to worn parts paves the way for a lifecycle management strategy for components, avoiding the purchase of new parts when recovery is technically feasible.

The coating’s ability to maintain a low surface roughness (Ra) should also not be overlooked — a parameter that is decisive for the quality of the drawn wire. A controlled surface reduces the micro-imperfections that can be transferred to the wire, ensuring a finished product that complies with the most stringent standards in the construction industry.

In short, Coldside® is not simply a coating, but a strategic lever to improve reliability, productivity and profitability of an entire ribbed wire drawing line.

Want to reduce maintenance costs and improve your plant’s performance? Contact Paganoni to receive information about Coldside® and request a tailored technical consultation.

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Ideal applications of Coldside® in industrial processes

To truly take advantage of a coating like Coldside®, it is essential to understand in which applications it can generate the most value. Not all drawing processes have the same requirements, and this is where an informed technical choice comes into play.

The main application, as we have seen, is in capstans used for drawing ribbed wire for reinforced concrete. In these systems, the capstans are subject to continuous contact with a wire that has an irregular surface and high tensile strength, under conditions of high speed and mechanical load. Without an adequate coating, wear on the pulling area is rapid and forces frequent replacements.

Beyond capstans for ribbed wire, Coldside® also finds use on other mechanical parts of dry drawing lines for ferrous metals:

• idle pulleys subject to continuous wire flow
• pulling rings located in high-wear zones
• standard capstans for steel wire drawing

In all these cases, the application of the cold-applied tungsten carbide coating extends the service life of components and improves the overall productivity of the line.

Another context in which Coldside® becomes the ideal choice is the recovery of worn parts. Unlike coatings that require new pieces or complex preliminary machining, Coldside® can be applied directly to the worn area, restoring the original geometry of the component. This feature is particularly advantageous for those who want to adopt a sustainable approach, in line with the principles of the circular economy and the reduction of industrial waste.

Finally, the coating is ideal for companies operating in continuous production, where every unplanned interruption represents a significant cost.

Want to know if Coldside® can improve your plant’s performance? Contact Paganoni and request a technical consultation to identify the most suitable solution for your production needs.

Coldside® vs other coatings: when cold-applied tungsten is the right choice

When selecting an industrial coating, one of the most common mistakes is evaluating solutions solely on the basis of material hardness, overlooking equally decisive factors such as the application method, component geometry and specific operating context. This is the stage at which it becomes essential to understand the differences between Coldside® and other coatings in the Paganoni range.

For example, Wolside®, also based on tungsten carbides but applied with hot fusion technology HIP (Hot Isostatic Pressing), is the reference solution for new parts or for components operating under maximum load, both in dry and wet drawing. Wolside® delivers a super-compact, porosity-free structure, ideal for pulling capstans, idle pulleys, dancers and wire guide rollers on high-performance lines.

Kerblack®, on the other hand, is the chromium oxide based coating suited to dry drawing of ferrous and non-ferrous metals, particularly effective when the main problem is galvanic corrosion or the presence of aluminium parts.

Coldside® positions itself in a precise niche: dry drawing of ribbed wire for reinforced concrete, where a tungsten coating that can be cold-applied even on finished or worn parts is required. It is the right choice when:

• the component to be coated is a capstan for ribbed wire
• the part is already in service and you want to recover it without replacement
• you need an alternative to Wolside® for specific applications on finished parts

Another strategic aspect is production continuity. A coating that is not suited to the context can lead to uneven wear which, over time, causes sudden failures and downtime. By contrast, choosing Coldside® in the right contexts means reducing these risks, ensuring greater operational stability.

The real question is not “what is the absolute best coating?”, but rather: what is the best coating for my specific application? When the process involves ribbed wire drawing, Coldside® represents a technically focused and economically effective choice.

Not sure if your current coating is the most efficient choice? Contact Paganoni for a technical analysis and find out if Coldside® can improve your plant’s performance.

How to choose the right coating for your ribbed wire drawing line

At this point, the real strategic lever is not knowing the characteristics of individual materials, but understanding how to choose the right coating for your production process. This is where the difference is made between a “standard” technical choice and a decision capable of generating a real competitive advantage.

The first element to analyse is the operating context. Every drawing line presents specific variables: type of wire processed, drawing speed, capstan geometry, wear state of existing components. In the case of ribbed wire for reinforced concrete, conditions are particularly demanding and Coldside® becomes a highly strategic solution because it combines the hardness of tungsten with the flexibility of cold application.

The second aspect concerns production goals. If the priority is to extend the service life of existing capstans without having to replace entire components, then the recovery service with Coldside® deposition represents a solution that combines performance and economic efficiency. Paganoni has been offering this type of intervention for decades through its capstan and pulley recovery service — a path that includes cleaning, coating deposition, dimensional checks and release of a final inspection certificate.

Another factor that is often underestimated is the total cost in the component’s lifecycle. Many companies focus on the initial cost of the coating, without considering the impact of maintenance, replacements and production interruptions. In this scenario, Coldside® enables real savings in the medium-to-long term thanks to the combination of extended life and applicability on recovered parts.

Finally, it is essential to adopt a consultative approach: there is no universal solution, but there is a most suitable solution for your specific line. And this is where the technical support of Paganoni becomes decisive in avoiding suboptimal choices.

Choosing the right coating means making a decision that directly impacts productivity, quality and margins.

Want to make sure you choose the most effective solution for your plant? Contact Paganoni for a personalised technical consultation and find out if Coldside® is the ideal solution for your needs.

Why Coldside® is a strategic choice for ribbed wire drawing

In an industrial context that is increasingly competitive, where every detail can influence the profitability of a production line, the choice of coating is no longer a secondary technical aspect, but a real strategic decision.

Coldside® positions itself as a highly specialised solution for all those applications where ribbed wire drawing for reinforced concrete represents the core of the production process. It is not simply a tungsten carbide coating: it is a tool to improve the efficiency of the entire line, from capstan durability to finished wire quality.

We have seen how its use is particularly indicated in contexts where mechanical parts are subject to high dynamic loads and where the ability to apply the coating to finished or worn parts opens the way to a sustainable component management strategy.

Adopting Coldside® means focusing on:

• longer capstan life
• reduced maintenance and replacement costs
• production continuity
• consistent quality of drawn ribbed wire
• the ability to recover worn components instead of replacing them

True competitive advantage comes from the ability to make informed technical choices, based on decades of experience in the wire drawing industry. And this is where the support of a partner like Paganoni — a division of Mario Nava S.p.A., active in the field of wear-resistant coatings since the 1970s — makes the difference.

If you want to improve the performance of your drawing plant and reduce operating costs, contact Paganoni today: request information or a personalised quote and find out how Coldside® can become a strategic ally for your production.