Titanium alloy has great tensile strength, low density and excellent corrosion resistance, and is widely used in aviation, aerospace, medical treatment, construction and other fields. Titanium alloy also has excellent magnetism and can be used to manufacture magnetic devices without sparks. Magnetization without spark means that in the magnetic field, metal materials will not produce sparks, which can be used in some occasions with high explosion-proof requirements. This feature is often used in equipment manufacturing in petroleum, chemical industry, coal mine and other industries.