Titanium alloy casting turning and boring processing method

Abstract

The invention discloses a titanium alloy casting turning and boring processing method. During turning and boring processing, firstly, cutter materials need to be selected, hard alloy cutters such as YG8, YG8W and YG-10H are used during the coarse turning, and hard alloy cutters such as YG8W and YP15 are used during fine processing; in order to well grind turning cutters and boring cutters, during the coarse processing, the cutting speed needs to be low, and the cutting depth needs to be shallow; during the fine processing, the cutting speed needs to be higher, and the cutting depth needs to be shallow, a proper cutting allowance needs to be left before the final fine processing, and the rigidity of a cutter rod is improved, so the qualified titanium alloy parts are manufactured. The method has the advantages that the temperature of cutting cutter edges is reduced, the cutter abrasion and the cutting edge tipping are reduced, the installing and clamping deformation is reduced, the surface quality of processed parts is improved, the dimension precision is ensured, the processing efficiency is effectively improved, and the production cost is reduced.

Description

[0001] technical field [0002] The invention belongs to the technical field of material processing, and in particular relates to a turning and boring processing method of a titanium alloy casting. [0003] Background technique [0004] Titanium and titanium alloys are engineering materials with good comprehensive mechanical properties. Their main performance characteristics are high specific strength, good thermal strength, and excellent corrosion resistance. They are increasingly widely used in aviation, aerospace, shipbuilding, petroleum, chemical and other industrial fields. However, titanium alloy castings are difficult-to-machine materials, and it is easy to form a very hard oxide layer during processing, which accelerates tool wear; in addition, because the wall thickness of titanium alloy is usually thin and the rigidity is poor, it is easy to produce clamping deformation during processing. Moreover, the machining allowance is small, and it is difficult to align...

AI Technical Summary

Problems solved by technology

[0004] Titanium and titanium alloys are engineering materials with good comprehensive mechanical properties. Their main performance characteristics are high specific strength, good thermal strength, and excellent corrosion resistance. They are increasingly widely used in aviation, aerospace, shipbuilding, petroleum, chemical and other industrial fields. However, titanium alloy castings are difficult-to-machine materials, and it is easy to form a very hard oxide layer during processing, which accelerates tool wear; in addition, because the wall thickness of titanium alloy is usually thin and the rigidity is poor, it is easy to produce clamping deformation during processing. Moreover, the machining allowance is small, it is difficult to align the marking line, and it is easy to cause waste products; in addition, the large-scale castings have uneven casting components and different hardness, which will bring greater difficulties to machining