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Titanium alloy casting turning and boring processing method

A processing method and technology of titanium alloy, applied in the field of material processing, can solve the problems of difficult machining, different hardness, poor rigidity, etc., to reduce tool wear and chipping, improve surface quality, and reduce production costs.

Inactive Publication Date: 2015-04-29
青岛齐力铸钢有限公司
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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

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Embodiment

[0016] The turning and boring processing method of the titanium alloy casting of the present embodiment comprises the following steps:

[0017] (1) When turning and boring, the tool material must first be selected. When cutting the outer layer of the titanium alloy blank, the friction between the overheated titanium chips and the tool surface can cause severe wear on the tool surface, and the hard oxide layer It can damage the cemented carbide knife surface, which requires the tool material to maintain sufficient hardness and good wear resistance and heat resistance at high temperatures; use YG8, YG8W, YG-10H and other cemented carbides for rough turning Cutting tools, such as YG8W, YP15 and other hard alloy cutting tools for finishing;

[0018] (2) To grind the turning tool and boring tool well, the rake angle V is 10 0 , back angle T is 8 0 , the main declination angle is 45 0 ;In addition, the cutting speed should be low during rough machining, the cutting depth should b...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B1/00B23B35/00
CPCB23B1/00B23B35/00
Inventor 刘占向
Owner 青岛齐力铸钢有限公司
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