Studies on Titanium Alloy Turning Rate Improvement

Savilov, Andrey; Svinin, V. M.; Тимофеев, С. А.

doi:10.1007/978-3-030-22063-1_109

Cited by 2 publications

(1 citation statement)

References 13 publications

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“…The quality of screw manufacturing depends directly on the processing technology and cutting parameters. It is possible to solve these problems by high-performance machining at optimal cutting conditions using progressive cutting tools [9][10].…”

Section: Introductionmentioning

confidence: 99%

Comparative structural analysis of samples of transpedicular screws from titanium alloys

Pyatykh,

Tikhonov,

Ulakhanov

2024

J. Phys.: Conf. Ser.

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The article presents studies of transpedicular screws made of titanium alloy BT6. A metallographic and microstructural analysis of screw blanks, prototypes of transpedicular screws made of BT6 alloy and commercially produced screws made of Ti-6Al-4V was performed. Specimens of transpedicular screws were manufactured using the vortex thread cutting method on a CITIZEN Cincom K16E-VII automatic lathe. The microgeometry of the screw surface was created by sandblasting using quartz sand as an abrasive material. Studies have shown that experimental and foreign samples of transpedicular screws have a similar microstructure, consisting of globular crystals of the β-phase located in a light matrix of the α-phase. The microhardness of the rod part of the screw made of Ti-6Al-4V alloy was 312...338 HV, the microhardness of the material of the prototypes was from 264 to 394 HV. Conclusions have been drawn that determine the feasibility of choosing rods made of titanium alloy BT6 as a blank for the manufacture of transpedicular screws.

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Section: Introductionmentioning

confidence: 99%

Comparative structural analysis of samples of transpedicular screws from titanium alloys

Pyatykh,

Tikhonov,

Ulakhanov

2024

J. Phys.: Conf. Ser.

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Analysis of advanced transpedicular screw machining technologies

Savilov

Пятых

Тимофеев

2021

jour

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The purpose is to improve the machining efficiency of titanium alloy transpedicular screws on highperformance machine-tools based on the selection of advanced technological approaches, and to analyze the current manufacturing technology of implants on CNC machines of the semi-automatic longitudinal turning lathe type. The efficiency is assessed using the following criteria: process performance determined by the machine time and the quality of implant processing (surface roughness, geometric accuracy, mechanical properties). It is found that semi -automatic longitudinal lathes equipped with a collet feed system and drive heads for thread whirling allow processing the implants of the transpedicular screw type in a single set-up with maximum efficiency. It is shown that the machining technology of transpedicular screws is largely determined by the features of their design. The type and shape of the thread have the greatest influence on the used cutting tool and cutting modes. The analysis of screw breakages revealed that the main failure reasons are design defects and poor machining quality of the threaded part. It is determined that the use of the thread whirling method makes it possible to obtain the thread in one cutting pass and, therefore, significantly increase the machining performance compared to the traditional technology without any loss of quality. Additional advantages of this method are the reduction in the number of tools used and follow-on finishing deburring operations. Based on the conducted analysis the manufacture of transpedicular titanium alloy screws is recommended to perform using advanced cutting tools, primarily thread whirling cutters ensuring 4 times increase in machining performance without any loss of the processed item quality and 2 times reduced surface roughness. In this case the temperature in the cutting zone decreases, which has a positive effect on processed product service life. The condition for the effective use of the cutters is equipping of the machine-tools involved in the technological process with special drive heads.

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Studies on Titanium Alloy Turning Rate Improvement

Cited by 2 publications

References 13 publications

Comparative structural analysis of samples of transpedicular screws from titanium alloys

Comparative structural analysis of samples of transpedicular screws from titanium alloys

Analysis of advanced transpedicular screw machining technologies

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