{"id":4828,"date":"2026-02-23T14:47:05","date_gmt":"2026-02-23T13:47:05","guid":{"rendered":"https:\/\/lemgalvanica.com\/?p=4828"},"modified":"2026-03-04T14:44:04","modified_gmt":"2026-03-04T13:44:04","slug":"how-pvd-coating-system-works","status":"publish","type":"post","link":"https:\/\/lemgalvanica.com\/en\/how-pvd-coating-system-works\/","title":{"rendered":"How a PVD System Works: Technologies and Processes Explained"},"content":{"rendered":"\n

Inside LEM PVD Division<\/em><\/em><\/h2>\n\n\n\n

How does a Physical Vapor Deposition (PVD)<\/strong> system actually operate? What are the key steps that transform a metal component into a product with a resistant, uniform, and stable finish over time?<\/p>\n\n\n\n

In this article, we go inside the LEM PVD plant<\/em><\/strong><\/a> to analyze its structure, technologies, and operational phases: from vacuum management to process parameter control, including the main deposition methods such as sputtering, evaporation, and cathodic arc<\/strong>.<\/p>\n\n\n\n

This deep dive is designed to offer a clear and comprehensive view of the dynamics that determine the quality, repeatability, and performance of the final coating.<\/p>\n\n\n\n

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\"PVD_LEM_2\"<\/figure>\n\n\n\n
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Components and Processes of a PVD System<\/h3>\n\n\n\n
\"LEM_PVD-Plant_ENG\"<\/figure>\n\n\n\n
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The Structure of a PVD System<\/em><\/em><\/h2>\n\n\n\n

A PVD<\/em><\/strong><\/a> plant is an integrated system composed of several interconnected modules, where every element directly affects the final result.<\/p>\n\n\n\n

1. Vacuum Chamber and Management<\/h3>\n\n\n\n

The vacuum chamber<\/strong> is the heart of the system. Made of heavy-duty stainless steel, it must withstand significant pressure differentials. The entire deposition process takes place inside this chamber.<\/p>\n\n\n\n

The pumping system is generally divided into two stages:<\/p>\n\n\n\n

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  1. Primary Vacuum:<\/strong> Achieved through mechanical pumps (rotary and Roots).<\/li>\n\n\n\n
  2. High Vacuum:<\/strong> Reached using turbomolecular or diffusion pumps.<\/li>\n<\/ol>\n\n\n\n

    During the evacuation phase, a pressure of approximately 10\u207b\u00b3 Pa<\/strong> is reached to totally remove air and contaminants. Deposition occurs between 10\u207b\u00b2 and 10\u207b\u00b9 Pa<\/strong>. Vacuum stability is critical: it affects adhesion, uniformity, and the final color of the coating.<\/p>\n\n\n\n

    <\/div>\n\n\n\n

    2. Racking and Parts Movement<\/h3>\n\n\n\n

    In Physical Vapor Deposition<\/em><\/strong><\/a>, the process is “line-of-sight”<\/strong>: the material deposits where it can physically reach. Therefore, component movement is vital.<\/p>\n\n\n\n

    Modern systems use planetary kinematic systems<\/strong> with single, double, or triple rotations, which allow for:<\/p>\n\n\n\n