As we all know that the carbide gun drill Blanks suitable for drilling cast iron, carbon steel, copper, aluminum alloy, alloy steel.But how should we use it.The following are some Instructions.
1. In use, you must first select the size of the guide sleeve, guide sleeve and carbide gun drill head gap remains within 0.003mm - 0.008mm, the use of gun drill machine spindle must have a higher axial And radial rigidity, the guide sleeve and the spindle to have a high degree of coaxiality.
2. Carbide gun drill cutting fluid used more stress, it directly affects the accuracy of the hole being machined. Must choose a special gun drill oil. General gun drilling fluid should have extreme pressure additives, to ensure that the film formed under high pressure to prevent dry grinding. Cutting fluid viscosity and borehole diameter, the smaller the diameter, the lower the viscosity
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