File:A microstructure comparison between the tungsten penetrator of the conventional manufacturing process and the self-sharpening tungsten penetrator manufactured by the cyclic heat-treatment process.jpg
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Summary
| Description |
English: This image is metallographic micrographs of a tungsten penetrator manufactured by a conventional heat treatment process and a self-sharpening tungsten penetrator manufactured by a multi-stage cyclic heat treatment process. Developed in 1993 at the Agency for Defense Development (ADD) in South Korea, this kinetic energy penetrator material technology is manufactured by cyclic heat-treatment and double-cycle sintering processes that repeatedly heat and cool metal materials at specific temperatures during the manufacturing process to separate metallic grain structures. The development of this technology has improved the mushrooming deformation in which the head of the penetrator wears bluntly, which has been a chronic problem with conventional tungsten heavy alloys, resulting in 8–16% increase in penetration, and it was the first case to apply a cyclic heat-treatment process to tungsten alloy penetrators. Currently, K274, K276, and K279 APFSDS rounds, which are serviced by the Republic of Korea Armed Forces, are manufactured through cyclic heat-treatment processes.
한국어: 해당 이미지는 기존의 열처리 공정으로 제조된 텅스텐 관통자와 다단열처리(Cyclic heat-treatment) 공정으로 제조된 자기첨예화 텅스텐 관통자의 미세조직을 확대한 현미경 사진입니다. 1993년 국방과학연구소에서 개발된 이 운동에너지 관통자 소재 기술은 제조 과정중에 금속 소재를 특정 온도에서 가열과 냉각을 반복하는 다단열처리 및 이중소결 공정으로 제조되어 관통자의 금속 조직구조들을 미세하게 분리시키는 기술입니다. 해당 기술의 개발로 인해 기존의 텅스텐 합금 관통자의 고질적인 문제점이었던 관통자의 끝부분이 버섯 모양으로 마모되는 머시루밍(Mushrooming) 변형 문제를 개선하여 관통력이 8~16% 향상되었으며 다단열처리 공정을 텅스텐 합금 관통자에 적용한 최초의 사례이기도 합니다. 현재 대한민국 국군에서 사용되는 K274, K276, K279 날개안정분리철갑탄은 다단열처리 공정으로 생산되고 있습니다. |
| Date | (original upload date) |
| Source | File:ADD's R&D project - Kinetic energy-based 120mm surface penetrator material.jpg |
| Author | 국방과학연구소 - Agency for Defense Development (ADD) |
Licensing
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This work was produced as part of official duties and already made public by a national agency or a local government of the Republic of Korea (South Korea), or the author's economic right of it is owned in its entirety by a national agency or a local government of the Republic of Korea under a contract. According to Article 24-2 of the Copyright Act of the Republic of Korea, the free use of this kind of work such as reproduction, modification, redistribution, and production and use of derivative works is permitted even including for commercial purposes without the need to obtain permission from the copyright holder. |  |
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 02:48, 18 August 2024 | | 974 × 433 (184 KB) | Gasiseda | Replaced with the original image with the added white line |
| 05:13, 16 August 2024 |  | 330 × 151 (17 KB) | Herostratus | Add white line separating left and right views, for clarity | |
| 19:50, 23 July 2024 |  | 948 × 433 (221 KB) | Gasiseda | Uploaded a work by 국방과학연구소 - Agency for Defense Development (ADD) from File:ADD's R&D project - Kinetic energy-based 120mm surface penetrator material.jpg with UploadWizard |
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