Ultralight Titanium Bike Clamp Bolt

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First, the characteristics of titanium alloy cutting

(1) Small deformation coefficient: this is a significant feature of titanium alloy cutting, deformation coefficient is less than or close to 1. The distance of chip sliding friction on the front tool surface is greatly increased, which accelerates tool wear.

(2) high cutting temperature: because the thermal conductivity of titanium alloy is very small, the chip and the front tool surface contact length is very short, the heat generated when cutting is not easy to pass out, concentrated in the cutting area and the cutting edge near the smaller range, the cutting temperature is very high. Under the same cutting conditions, the cutting temperature is more than twice higher than when cutting stainless steel.

(3) the cutting force on unit area is large: because the contact length of chip and front tool surface is very short, the cutting force on unit contact area is greatly increased, which is easy to cause the edge to collapse. At the same time, because the elastic modulus of titanium alloy is small, it is easy to produce bending deformation under the action of radial force during processing, causing vibration, increasing tool wear and affecting the precision of parts. Therefore, it is required that the process system should have better rigidity.

(4) cold and hard phenomenon is serious: because of the chemical activity of titanium, at high cutting temperature, it is easy to absorb oxygen and nitrogen in the air to form a hard and brittle skin; At the same time, the plastic deformation in the cutting process also causes the surface hardening. The cooling and hardening phenomenon not only reduces the fatigue strength of parts, but also increases the tool wear, which is a very important feature in cutting titanium alloys.

(5) The tool is easy to wear: after the blank is processed by stamping, forging, hot rolling and other methods, the hard and brittle uneven skin is formed, which is easy to cause the phenomenon of edge breakage, making the removal of hard skin become the most difficult process in titanium alloy processing. In addition, due to the strong chemical affinity of titanium alloy to the tool material, the tool is easy to produce bond wear under the condition of high cutting temperature and large cutting force per unit area. When turning titanium alloy, sometimes the wear of the front tool surface is even more serious than that of the back tool surface.

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Ultralight Titanium Bike Clamp Bolt

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