Study on the heat treatment of the high-pressure gaskets fabricated from round-shape M1 copper ingot

150 views

Authors

  • Le Viet Binh (Corresponding Author) Institute of Chemistry and Material, Academy of Military Science and Technology

DOI:

https://doi.org/10.54939/1859-1043.j.mst.78.2022.119-125

Keywords:

High-pressure gaskets; Heat treatment; Pure copper; Annealing; Mechanical properties.

Abstract

 High-pressure gaskets were fabricated from round bar M1 copper ingot and heat-treated before utilizing for gauges and sensors of measuring devices on Navy warships. The effects of temperature and heat treatment time on the mechanical properties, microstructure, fracture toughness, and tightness of the products were investigated. The results showed that, after annealing at 600 °C for 60 minutes with a heating rate of 5 °C/min, cooled down with the furnace, the recrystallization process of copper occurred completely with parallel crystals structure, and copper material was in the soft state with a hardness of 42.38 HB. The high-pressure gasket has good fracture toughness and tightness.

References

[1]. Phạm Tuấn Anh, “Khảo sát, đánh giá một số chỉ tiêu kỹ thuật của đệm khí cao áp cho đồng hồ và cảm biến dùng cho thiết bị đo lường trên tàu chiến đấu Hải quân”, Tạp chí Nghiên cứu KHC-NQS, Số Đặc san HH-VL (2020), tr. 77-81.

[2]. Tiêu chuẩn Việt Nam TCVN 197-1:2014 (ISO 6892-1:2009), “Vật liệu kim loại - Thử kéo - Phần 1: Phương pháp thử ở nhiệt độ phòng”.

[3]. ГОСТ 1535-2016, “Прутки медные. Технические условия”.

[4]. ГОСТ 859-2001, “Медь. Марки”.

[5]. TCVN 256:2006, “Vật liệu kim loại - Thử độ cứng Brinell”.

[6]. ASTM E407-07(2015)e1, “Standard Practice for Microetching Metals and Alloys”.

[7]. ĐLVN 08:2011, “Áp kế kiểu lò xo. Quy trình kiểm định”.

[8]. DIN 7603. “Ring seals and gaskets”.

Published

27-04-2022

How to Cite

Lê Viết Bình. “Study on the Heat Treatment of the High-Pressure Gaskets Fabricated from Round-Shape M1 Copper Ingot”. Journal of Military Science and Technology, no. 78, Apr. 2022, pp. 119-25, doi:10.54939/1859-1043.j.mst.78.2022.119-125.

Issue

Section

Research Articles