金属加工（热加工）Issue(3)：134-137,4.
高温水蒸气氧化在硅钼球墨铸铁排气歧管上的应用研究
Application research of high-temperature steam oxidation on the exhaust pipe of silicon-molybdenum nodular cast iron casting
李义然 1苏永盛 1张银生 1王金双 1符晓1
作者信息
- 1. 西峡县内燃机进排气管有限责任公司 河南南阳 474550
- 折叠
摘要
Abstract
The exhaust manifold is an important component of a car engine,and the material of the exhaust pipes for commercial vehicle engines is mostly made of silicon-molybdenum ductile iron castings.During engine hot running tests,the exhaust pipes are exposed to a high-temperature environment of about 700℃.After the tests,the inner cavity often shows red rust,and the rust spots can easily fall off,which may cause damage to the turbocharger blades,leading to customer complaints.Therefore,solving the problem of rust inside the exhaust pipes is crucial in actual production and supply.In order to solve the problem of rust in the inner cavity of QTRSi4Mo1 in the exhaust pipe of commercial automobile engine,a solution has been proposed for generating Fe3O4 protective film through high-temperature steam oxidation.Through comparative experiments,it is verified that the scheme can effectively improve the oxidation resistance of exhaust pipe castings and solve the problem of rust in the inner cavity.关键词
排气管热机内腔生锈/高温水蒸气氧化/硅钼球墨铸铁件Key words
rusting of the exhaust pipe hot engine chamber/oxidation by high temperature water vapor/silicon molybdenum nodular cast iron引用本文复制引用
李义然,苏永盛,张银生,王金双,符晓..高温水蒸气氧化在硅钼球墨铸铁排气歧管上的应用研究[J].金属加工（热加工）,2025,(3):134-137,4.
