Simulation on heat treatment distortion and control for A-100 steel complex connector

doi:10.13251/j.issn.0254-6051.2020.11.036

Abstract

Abstract: Finite element model of A-100 steel complex connector was established to simulate the temperature field and quenching distortion in the absence of rigid constraints during the quenching process by using SYSWELD software, and the simulation results were verified by experiments. The temperature field results show that when cooling for 0.13 s, the temperature is evenly distributed and the surface temperature of the parts is around 820 ℃; while when cooling for 5-60 s, the temperature distribution on the surface of the part is extremely uneven, the temperature at the corners of the head cavity of the part is relatively low, and the temperature at the connection between the arm and the wing surface at the bottom is relatively high. When the cooling time is extended to about 160 s, the overall temperature of the parts has dropped to below 60 ℃. The distortion results show that when the cooling time is 0.5-10 s, the wing surface far away from the reinforcing rib produces quenching distortion and the distortion at the top edges and corners reaches 3 mm. When cooling for 600 s, the maximum distortion decreases to 0.65 mm. According to the distortion simulation results, a special quenching tool is designed, and the distortion correction rate can reach about 70%.

Key words: numerical simulation, A-100 steel, temperature field, quenching distortion

CLC Number:

TG162.83

Zhang Zengguang, Liu Gang, Jiao Qingyang, Kang Chong. Simulation on heat treatment distortion and control for A-100 steel complex connector[J]. Heat Treatment of Metals, 2020, 45(11): 192-196.

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