[VA/VE Case] Proposal for Additional Circulation Holes in the Plated Bag Hole Male Thread Section to Suppress Rust
We will introduce a case where the rust problem inside the menegis due to the passage of time has been resolved!
Here is an example of a product made from iron-based material with a threaded hole processed on the end face, which undergoes a plating process. When immersed in the liquid, the interior of the bag-shaped threaded hole becomes an air pocket, preventing the plating solution from circulating, resulting in a thin film forming inside. In such cases, due to insufficient plating, rust begins to develop from the back of the thread over time. By drilling through the pilot hole of the bag-shaped threaded hole at a 90° angle, air pockets are eliminated in the threaded section, allowing the plating solution to circulate. This not only ensures proper plating inside the threads but also suppresses rust formation over time. [Issues] - When immersed in the liquid, the interior of the bag-shaped threaded hole becomes an air pocket, preventing the plating solution from circulating, resulting in a thin film forming inside. - Due to insufficient plating, rust begins to develop from the back of the thread over time. *For more details, please visit our website or feel free to contact us.*
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【Results】 ■During the estimation process for screw parts with plating processes, it was proposed to the customer to add circulation holes for the plating solution at a 90° angle to the male threads, as the plating solution does not circulate internally. ■The proposal was adopted because the product was not affected by the additional holes, and the rust issue inside the male threads due to the passage of time was resolved. *For more details, please visit our website or feel free to contact us.
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Our company specializes in the manufacturing and assembly of machined parts through cutting processes. Based on Sado Island, we have become a comprehensive supplier of machined parts, providing components to over 800 customers nationwide. Our products are utilized in advanced fields such as medical devices, aircraft, optical equipment, semiconductor manufacturing equipment, and new energy sources including hydrogen, enriching the lives of people not only in our country but around the world in various scenarios. Please feel free to contact us with any inquiries.