PROSINO

Steelhawk represents the latest spinning ring development, launched in 2011 and based on 65 years collaborationship between Prosino and the most demanding OEM’s and mills worldwide.
Steelhawk meets the customers needs in terms of speed and reliability of the spinning process. It doesn’t need the so called “break-in” procedure: Steelhawk is provided with a special non-metallic dry lubrification coating that allows you to start the new ring at full speed without any long and un-productive running in schedule.

TECHNICAL FEATURES

• Made in high carbon and high chrome core hardenend ball bearing steel;
• Dry lubrication, anti-wear, on-metallic plasma like coating;
• Super polished low roughness, traveller working areaty.

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EXCELLENT PAYBACK

• No waste of time and productivity (consequently money saving) thanks to the no running in procedure, It’s possible to start at full speed with the normal traveller number;
• No deterioration of ring surface thanks to its plasma-like coating that doesn’t allow micro-welding between ring and traveller;
• The amount of yarn breaks are controlled in a better way thanks to the more stable yarn tension, allowing a better frame productivity;
• it guarantees the no deterioration of ring surface thanks to its special plasma-like coating, that doesn’t allow micro-welding between ring and traveler even in the most harsh working environment (compact cotton spinning, dyed synthetics, 100% rayon)

HIGH WORKING SPEED VALUE

High working speed can be reached with STEELHAWK spinning ring thanks to the following factors:

• Low roughness (less than 0,2 µRA);
• Ultra precise flange profile achieved thanks to the unique PROSINO form turning technology;
• Dry lubrification anti wear plasma-like coating;
• Very high consistency of all mechanical parameters (out-of-roundeness, hardness, roughness).

EVERLAST COATING

• Steelhawk spinning ring helps the reduction of hairness providing a smooth surface for a long period of time on all spindle positions;
• Hairiness, among its several sources, has its root cause on the dimension of spinning triangle. The area of the spinning triangle change over time due to change in yarn tension, which is strongly influenced by the coefficient of friction between ring and traveller. When the ring surface is worn out (see picture), the coefficient of friction changes.
• STEELHAWK ring, thanks to the non metallic plasma-like coating keep its smoothness over the years, giving a significant contribution to the control of yarn tension, spinning triangle and ultimate yarn hairiness.

THE BEST CORE STRUCTURE

• Steelhawk spinning ring helps the reduction of hairness providing a smooth surface for a long period of time on all spindle positions;
• The raw material used by PROSINO is an outstanding low sulfur, high purity steel that undergo the most challenging inspection before been released as “OK for production”. Heat treatment, thanks to subfreezing step allow the perfect over time dimensional stability.

With more than 2.500.000 units sold – the proof of their strong reliability all over the world – RZD PROTECTED by Prosino Borgosesia Rings are the black colour spinning rings famous for their excellent quality/price ratio and their availability for any brand spinning frames.
RZD PROTECTED are provided with a smooth, micro-porous and silky surface able to catch the natural lubrification of the fiber spun; they have a wide field of application and give superlative performances with fine counts (ne 60 and finer) and core spun yarns.
Flange profile ultra-precise manufacturing without unevennes that represents the ideal traveller surface path.

TECHNICAL FEATURES

• The usage of the best high carbon and high crome100Cr6 core hardened steel give to RZD PROTECTED an increased hardness and a higher resistance to wear under high alternate traveller loads.
• High chrome core hardened 100Cr6 ball bearing steel.

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VERSATILITY AND ADVANTAGES

• Also available in the innovative technical solution RRAH (Reversible Ring on Aluminium Holder): one spinning ring with 2 flanges and one aluminium holder with a cut.
• Less weight: the ring and the holder have a minor weight (about 30-40 grams) than the solid ring, which means less power consumption for the ring frame;
• Double ring life: the ring can be used twice, since it has 2 flanges. When the first one is over, the ring can be flipped in order to use the second flange;
• Unlimited life of the holder. No problem in the ring fitting: the holder replicates exactly the fitting part of the ring;
• Saving on future costs: these reversible rings are lighter and less expensive than the full steel rings;

Successfully producted by Prosino since 1946, STEEL CONICAL RINGS represent the core of Prosino’s tradition and competence; they are worldwide recognized and used for decades by the most prestigious OEM’s like ZINSER, COGNETEX and GAUDINO.

TECHNICAL FEATURES

• Made with carbon-high chrome 100Cr6 core hardened steel and provided with a mirror-polished surface
• Prosino STEEL CONICAL RINGS can perform for years under high alternate traveler loads.

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"4+4" LUBRIFICATION SYSTEM

• Steel Conical Rings have a though job: release the right amount of lubrication: not to much, not too less;
• Steel conical rings are provided with a peculiar “4+4”micro holes lubrification system, which allows the right amount of lubrification. Every 45° the traveler finds the perfect amount of oil – brought on the ring surface by 100% selected wool wicks – in order to run smoothy for years.

THE BEST PERFORMANCE

• The long term Prosino’s manufacturing competence, together with the co-operation with the best world spinning mills, has allowed the development of a special conical/concave running path with an extremely smooth surface, in order to allow the best ring/traveller contact;
• The special low-roughness polish finish forniture assure a consistent performance.

A COMPLETE SERVICE

PROSINO SUPPLIES A COMPLETE CUSTOMIZED SERVICE OF RING RAILS ENGINEERING AND MANUFACTURING.
ACCORDING THE MARKET NEEDS, PROSINO CAN REALIZE CUSTOM-MADE RING RAILS ( DIFFERENT COUNTS, RING DIAMETERS, SPINNING FRAMES, ETC.) EQUIPPED WITH ALL THE REQUIRED ACCESSORIES, WITH THE QUALITY OF A OEM SUPPLIER.

Prosino’s range of SINTERED METAL RINGS, with over than 3.000.000 rings sold worldwide, includes different raw material compositions and density in order to suit to the most difficult working conditions.

TECHNICAL FEATURES

• High hardness, in order to assure a long ring life and a consistent traveller path condition;
• Surface smoothless and low roughness, for a correct running of the traveller and a consequently regular yarn tension;
• Regular oil flow, thanks to the choice of the best raw material and the most modern manufacturing techniques.

STANDARD PROFILE AND OIL FEED DESIGN

• Prosino’s standard ring profile HZ_BS allows an excellent yarn clearance. The suggested oil feed design is the "SE": great profile strength, easy wick replacement and reduced maintainance costs.
• Ring dimensional range: we can offer our rings with the following dimensional range to suit every customer need. See table:

THE BEST PERFORMANCE

• Thanks to our years of experience and strong relationship and valuable feedback from our customers, we have developed SINTERED METAL RINGS, which assures a regular oil flow from the oil reservoir through the ring up to traveller running path. This characteristic can be assured only with a very balanced blend of the metallic and non metallic powders and with a perfect sinterization process.
• The key factor to reach the highest performances is that the ring porosity must be open on its surface. State of the art manufacturing technology is used to achieve this result. The porosity is kept open and it assures the best oil permeability throughout the ring. In the following example you can see the difference between the PROSINO’s open porosity v.s. a ring from our competitors.