鋼管再加熱爐爐內(nèi)輥道結(jié)構(gòu)的改進(jìn)

Structure Modification of Roller Table within Steel Tube Reheating Furnace

摘要: 鋼管再加熱爐內(nèi)的溫度為800~1120℃,爐內(nèi)輥道很容易被損壞,同時(shí)也易使管體出現(xiàn)黑印、擦傷、粘鋼、凹坑等質(zhì)量缺陷。分析、對(duì)比了幾種結(jié)構(gòu)形式的鋼管再加熱爐輥道在使用中存在的問(wèn)題及其產(chǎn)生的原因,并對(duì)輥道進(jìn)行了改進(jìn)。提出了對(duì)不同溫度的再加熱爐,應(yīng)根據(jù)輥道的不同使用部位,采用不同的結(jié)構(gòu)和材質(zhì)以及在使用過(guò)程中應(yīng)注意的問(wèn)題。

Abstract: Owing to the temperature ranging from 800 ℃ to 1 120 ℃ of the steel tube reheating furnace, damage frequently happens to the inlet/outlet roller tables of the furnace, or to the pipe body to cause such defects as black dot, scratch, steel sticking and pit, etc., getting the pipe fail to meet application requirements. To solve the issue, investigation of the existing problems and their causes concerning several steel tube reheating roller tables with different structures are made. As a result, the roller table is improved. Proposed here are the selection and recommendation of proper material and structures of different roller sections according to reheating furnaces with specific temperature ranges. Also mentioned are some points of the roller table that need care during operation.