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Machining characteristics of zirconium metal

Zirconium has excellent corrosion resistance to a variety of acids, such as hydrochloric acid, nitric acid, sulfuric acid, acetic acid, alkali and salt, and zirconium alloy has good corrosion resistance in high temperature and high pressure water and steam at 300-4000℃.

Zirconium alloy cutting characteristics: large cutting force, zirconium alloy strength and hardness is relatively high, plastic deformation resistance is large, zirconium alloy in the air easy to travel oxide layer, oxide surface strength and hardness is higher, so the unit area to withstand greater cutting force.

High cutting temperature. The thermal conductivity of zirconium alloy is small, and the cutting heat is several kinds of blades and chips, which not only accelerates the wear of the tool, but also easily causes the oxidation of the cutting, and the zirconium alloy burns at the poles, which is easy to cause combustion. There was an accident.

Poor surface quality, high alloy has a high chemical activity, a interaction with oxygen and nitrogen in the atmosphere, the heat generated by cutting processing, often cause chips and workpiece surface Yang Ha, limiting the improvement of cutting speed, affecting the surface quality, coupled with zirconium alloy chemical affinity for tool materials, chips are easy to adhere to the blade, This increases the friction between the tool and the workpiece. The large amount of heat generated by friction greatly reduces the tool life and also reduces the surface roughness. The surface quality is affected. The hardness and strength of the tool material are required. At the same time to have good wear resistance and heat resistance, after many repeated experiments, the more useful carbide grades are YG6X, YG8, but when drilling, I use high cobalt high-speed steel material, short handle, increase the thickness of the drill core twist drill, and must replace the tool in time. Set parameters of the tool: In order to reduce high alloy cutting deformation and cutting temperature, full heat dissipation, the front Angle of the general rough car is about 10°, and the front Angle of the police car is 5°~7°. Because the elastic modulus of the high alloy is small, the cold hardening phenomenon is serious, and the coarse and fine turning rear Angle of 16~17° is better. Under the premise of ensuring the rigidity of the lathe system, the main deflection Angle of the rough turning is 45°, and the main deflection Angle of the fine turning is 30°. In order to improve the surface processing quality and facilitate heat dissipation, the auxiliary deflection Angle is about 12°.

The edge Angle is in, 4° is taken when roughing, and in order to avoid cutting and scratching the surface that has been processed, =0° is entered to achieve the desired effect. Tip radius, in order to prevent tip cracking and wear, grinding out the tip effect is good.

According to the characteristics of zirconium alloy, it is necessary to use low cutting speed, large feed and cutting depth.
Meanwhile，we also have rich zirconium materials resource in stock，include zirconium rod，zirconium wire .