Open AccessFinite Element Analysis and Experimental Study of Atomized Gas Flow Field in Spray Forming
Author(s) -
Yang Cheng,
Bai Yang,
Yuhang Chen,
Peng Zhang
Publication year - 2020
Publication title -
materials physics and chemistry
Language(s) - English
Resource type - Journals
ISSN - 2661-412X
DOI - 10.18282/mpc.v1i4.841
Subject(s) - nozzle , spray nozzle , flow (mathematics) , materials science , finite element method , front (military) , mechanics , volumetric flow rate , liquid metal , position (finance) , mechanical engineering , metallurgy , engineering , structural engineering , physics , finance , economics
During the spray forming process of die steel, the gas flow field of nozzle atomizer has an important influence on the atomization effect of metal solution and the shape and performance of deposited billet. In this paper, the finite element analysis method was used to study the flow field distribution of the annular slot type restricted nozzle. The results showed that the negative pressure area was formed at the front of the atomizing gas outlet of the nozzle; the negative pressure area was enlarged and the negative pressure value was increased with the increase of the extending position of the liquid guide pipe and the atomizing pressure; when the atomizing pressure was 0.5MPa and the extending position of the liquid guide pipe was 7mm, the negative pressure value of the front of the liquid guide pipe could reach-38650Pa and the gas flow rate could reach 191.4m/s; the back-injection could be effectively avoided by optimizing the appropriate process parameters. And the damage of atomizing nozzle could be reduced.