1. Guía Definitiva de Abrasivos Industriales para tus Aplicaciones de Granallado

    El proceso de granallado o sand blast, también conocido como sandblasting, es una técnica industrial de limpieza y preparación de superficies que implica la proyección de partículas abrasivas a alta velocidad mediante el uso de equipos especializados. Esta técnica se utiliza para eliminar suciedad, óxidos, pintura antigua, recubrimientos no deseados y otras impurezas de diversas superficies.

    Los productos utilizados en el proceso de sand blast incluyen granallas metálicas, arena u otros tipos de abrasivos, que son proyectados con fuerza sobre la superficie a tratar. Estos abrasivos impactan contra la superficie y eliminan las capas no deseadas, dejando la superficie preparada para recibir nuevos recubrimientos o pinturas.

  2. Grit and shot stainless steel abrasives, why is it your best option?

    People use stainless steel for various reasons, including its mechanical properties and appearance. However, for most, the first thing that comes to mind is its resistance to corrosion, which makes it highly desirable for many applications. For example, stainless steel is used in the food, medical, construction, automotive, and marine industries, to name a few.

    Stainless steel is often more expensive than carbon steel so choosing the right abrasive is essential. Doing so can significantly improve production efficiency, reduce rework costs, and reduce material waste.

    Like carbon abrasives, stainless steel is also carbon-based, but with a significant amount of chromium (minimum 10.5%). Other elements such as nickel and molybdenum are added to improve its characteristics, mainly its resistance to corrosion.

    Stainless steel products are generally used in applications that are exposed to very aggressive environments (saline, acid or alkaline environments). This corrosion

  3. High Carbon VS Low Carbon Steel Abrasives

    On this occasion we have to talk about energy since the process of shot blasting a piece is done by transmitting kinetic energy to an area.

    The formula tells us that the kinetic energy is equal to one half of the mass times the speed squared, that is to say that the variables here would be the mass, which is the size of the particle and the quantity that is thrown plus the speed, since either the particles are blown by means of a wheel or by air pressure through nozzles in an airblast system.

    The particles are accelerated through these media to transmit that energy and do the cleaning work; Another very important variable is the hardness of the particle, and in the case of steel abrasive, it is defined by the amount of carbon it contains.

    Therefore, there are two types of abrasives on the market: low and high carbon steel. But how do we know which one suits us best?

    Manufacturers of low carbon shot may claim that their product is better than high carbon shot

  4. Steel Abrasives vs Silica Sand

    What material is more efficient to clean or polish the surface of metal parts?

    Here we tell you some details and differences about the abrasives known as "Steel Abrasive" and "Silica Sand"!

    The surface treatment of metal parts is essential for future conditioning or work in the workshop. And the abrasives mentioned above can help you give them that perfect finish you need, but which of the two is better to optimize efficiency, speed, quality and cost?

    To make the best decision, you must take into account elements such as size, shape, hardness and fragility.

    For example, starting with the "Silica Sand", which due to its extreme fragility and thanks to the fact that it is projected by high production equipment, can only be used once since up to 80% of the material turns into dust.

  5. Why will the separator be your ally to improve your operational mix?

    The separator is a key element of any shot blasting system. Usually it is located on top of the storage hopper, this is in charge of removing the contaminants out of the Operational Mix of shot, as well as controlling the size of the retained abrasive and disposing of material such as; very fine abrasive, contaminants removed from parts, etc. With the clean abrasive falls directly into the hopper.

    In this way, the efficiency of the separator becomes a crucial parameter in operating costs, as well as the adjustments that must be taken care of within it, such as the extraction of fines from the system and the air flow that passes through it.

    Most of the separators have a rotating screen to remove large contaminants and an outlet to a container to deposit all the trash.

    The design of the separator varies from machine to machine, but in all, the fundamental principle of operation is the same:

    • Extend the abrasive curtain through the separator
    • Regulate
  6. What is shot blasting or sandblasting?

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    Shot blasting, also known as abrasive blasting, is even known by some as "sandblasting" by its English term, although the latter concept refers exclusively to blasting with silica sand. It is a process where an abrasive material is propelled by means of air, water or centrifugal force against a surface.

    This method is used to clean, strengthen or prepare surfaces.

    There are many variants in the procedure to throw the abrasive medium but the most common is to do it through a machine with wheels, which drive the abrasive against the target, that

  7. How to choose the correct abrasive for your sandblasting process?

    To understand the how well, we need to understand well what is sand blast or sandblasting? The definition of this word is understood as “sand under pressure”; however, numerous abrasives in addition to sand can be used in this operation to clean, polish or remove materials and residues from different surfaces.

    In areas of abrasives, we have 2 types commonly used:


    • Aluminum oxide
    • Steel shot
    • Silicium carbide
    • Sodium bicarbonate
    • Cut wire
    • Garnet
    • Copper slag
    • Glass pearl
    • Plastic abrasive


    • Silica sand
    • Diamonds
    • Quartz
    • Corundum


    To sandblast, we use compressed air which propels the abrasives at

  8. Success Story of Luitpolhütte, How W Abrasives experts become TrialAdvisor?

    Luitpolhütte is a German company which produces high-quality castings in small and medium-sized series for renowned companies throughout the world. 
    Their main key differentiating point is based on their unique offer: they are focused on heavy, technical, sophisticated and core-intensive castings of up to 1,000 kg.
    Faced with a blasting issue, Luitpoldhutte did not hesitate to trust Winoa’s expert team and came for a trial at Le Cheylas Test Center.


    LH ok int

    What are the stakes of the trial?

    Currently Luitpoldhütte is re-blasting most of its parts two or three times, focusing on one or two critical areas which is a real waste of time and money!
    The goal of the trial was to find a more efficient abrasive 
  9. Focus on blasting process control to guarantee cleaning success!

    A successful Technical Seminar was held in June at Schulz Foundry, one of the biggest air compressor manufacturers in Brazil. They started in the foundry industry producing parts for their compressors and, after that, extended their range of products for the automotive industry, the most important Brazilian sector today after the agricultural sector.
    Schulz was one of the first customers where we were successful in implementing the HPG in 2007, providing important gains in productivity, a fact that has kept them faithful to our product since then. The HPG, which means High Performance Grit, is a steel grit specially designed to improve shot blasting performance in foundries and forges. It works faster and lasts longer. Its characteristics give a higher cleaning efficiency on external parts, a higher cleaning efficiency of internal surfaces with smaller holes and geometry details, and a controlled and consistent surface profile. 
  10. Winoa is committed to protect the environment.

    The environment is an ever increasing imperative, and worldwide concern, its protection is important. Hence company put everything into action to reduce their environmental impact.

    That’s why Winoa is committed to protect the environment and is launching different actions such as process waste, investments in water treatment, air treatment and recyclable packaging. Thanks to its internal and external awareness campaigns Winoa has been certified ISO 50001, and ISO 14001, which are the result of a successful and continuous improvement.

    “Environment friendly” is not just a concept, but a value Winoa shares, and that we would like to pass on to the next generations.

    Discover more in our article, published in MFN, May issue

    vignette MFN