In both our personal lives and professional work, installing wire thread inserts or self-tapping screws often presents challenges when selecting the right tap. Many people find themselves unsure about which type of tap to use, leading to potential damage to the inserts or screws. As a professional manufacturer specializing in machinery and equipment, Xinxiang Anderson Brothers Machinery & Equipment wants to help by sharing some insights into choosing the appropriate tap.
Firstly, straight flute taps are highly versatile, making them suitable for both through holes and blind holes, as well as for working with both ferrous and non-ferrous metals. They are cost-effective but tend to have lower quality compared to other types.
Secondly, spiral flute taps are better suited for machining blind hole threads. During processing, chips are expelled backward. When working with ferrous metals, the spiral angle is typically around 30 degrees to ensure strong spiral teeth. For non-ferrous metals, a slightly larger helix angle of around 45 degrees is preferred to achieve sharper cutting.
Thirdly, extrusion taps are ideal for non-ferrous metals, particularly aluminum alloys. These taps primarily rely on metal extrusion and deformation to form internal threads, which is a non-cutting process. Tapped holes created this way exhibit high tensile and shear strength, and their surface finish is excellent. However, extrusion taps require precise control over the bottom hole size—too large and the tap lacks sufficient strength; too small, and there’s a risk of the tap breaking.
Lastly, taper point taps are best suited for machining through-hole threads. They allow for forward chip evacuation. With a solid core design, they offer great strength and can handle substantial cutting forces, making them effective for processing non-ferrous metals, stainless steel, and ferrous materials alike.
By understanding these different types of taps, you'll be better equipped to select the right tool for your specific application, minimizing the risk of errors and ensuring successful installations every time.
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