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To explore the slant bed CNC lathe machining impact on heat treatment of workpiece

by:SNK     2020-08-29
Explore the slant bed CNC lathe machining effect on heat treatment of workpiece release date: 2018 - 06 - 07 clicks: 2505 times to explore slant bed CNC lathe machining for the influence of heat treatment of workpiece slant bed CNC lathes adopt bevel type layout, lathe bed for hollow structure, greatly improving the flexural and torsional stiffness of machine tool in the work, has the high stability at the same time. High rigidity and high stability of the slant bed CNC lathe for machining high precision provides a powerful guarantee. Slant bed CNC lathe is mainly used for precision of axisymmetrical parts has been complicated processing. Can satisfy the internal and external circular, steps, cone, sphere, groove, selects the thread and complex curved surface machining. Can satisfy the copper, aluminum, iron, stainless steel castings and forgings, such as blank pieces of rough and finish machining. Slant bed CNC lathe good reliability, strong rigidity, high precision, long life, fast. Can complete all kinds of difficult processing materials of reliable, stable thick, thin, finishing. The rotary knife tower, high positioning accuracy, heavy cutting deformation is small. Cutting processing on the quality of the workpiece surface decarburization, residual stress, machining allowance, surface finish, poor carbon layer removal, etc. , this is the workpiece in the condition of tempering, normalizing, annealing, and below 45 HRC hardness, but the effect is not obvious, not cause the change of the workpiece potential performance. Hard processing refers to the workpiece hardening steel or workpiece processing, 50 - 65 HRC higher hardness, bearing steel, high speed steel, roll steel, ordinary materials such as hardened steel and die steel quenching state, the machining effect is obvious. To have a certain degree of damage caused by machining surface factors mainly include the cutting heat generation and transmission in the process of machining, high speed friction and wear, etc. Hard cutting is the integrity of the machined surface and its content mainly includes the surface layer organization form of masters degrees, surface roughness, dimensional precision, the distribution of residual stress and white layer. Finished work surface hardness increase with the decrease of the as the amount of feed and cutting, increases with the increase of cutting speed. For the higher hardness on the surface of the finished work, the greater the depth of hardening layer. After hard cutting surface are residual compressive stress, and after grinding workpiece's maximum compressive stress is mainly focused on the workpiece surface. Influencing factors on workpiece surface integrity of the biggest is the rigidity of workpiece, the workpiece hardness value, the greater the residual compressive stress on the formation of the better. Cutting tools obtuse Angle radius, the greater the residual compressive stress values; Workpiece hardness is higher, the greater the residual compressive stress value. White layer formation is hard cutting is another important factor of the quality of the workpiece surface. With hard cutting process to form a kind of organizational form is white. White layer has a unique grinding characteristics, namely, high hardness, good corrosion resistance and high brittleness. High brittleness of the early spalling failure, and even formed workpiece processing after placing a stage after cracking.
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