1700加热炉规程

1、唐钢一钢轧厂1700生产线加热炉基本工艺规程编号：js/zy-qz-1051 适用范围本工艺规程适用于唐钢一钢轧厂1700生产线生产低碳钢、中碳钢、低合金钢等。2 加热炉技术规程2.1 双蓄热式加热炉该炉用于板坯轧制前加热。炉子端部由托入机入炉，出料端由托出机出炉。炉子装出料辊道中心距33600mm，砌体长28800mm，有效长27600mm，砌体宽16840mm，内宽15800mm。1#加热炉第一、第二加热段及均热段燃料为纯高炉煤气，2#加热炉第二加热段及均热段燃料为纯高炉煤气，热值8004.18kkj/nm3。2#加热炉第一加热段为转炉煤气，热值为14404.18kkj/nm3。烘炉为转炉

2、煤气。加热钢种有普碳、低合金、高合金、优质钢等。板坯厚150mm或者180mm，宽8501500mm，长900015000mm（单排），最大坯重为26.5t。要求板坯侧弯（月牙弯），长坯40mm，短坯20mm。弯曲度：长坯40mm，短坯20mm。炉子产量：冷装额定量250t/h（标准坯150125015000mm）热装：350t/h（钢坯850热装），详见加热炉的技术性能。2.1.1加热炉的技术性能2.1.1.1炉子用途：轧制前钢坯加热2.1.1.2炉 型：汽化冷却双蓄热步进梁式加热炉2.1.1.3加热钢种：低碳钢、中碳钢、低合金钢等2.1.1.4钢坯规格尺寸： 尺寸规格：厚度150 mm 宽

3、度850-1550 mm 长度9000mm-15000mm（单排装料）标准板坯：150x1250x15000、单重21t2.1.1.5钢坯入炉温度：室温冷装及850热装2.1.1.6出钢温度： 最高1250 ；2.1.1.7生产能力： 额定250 t/h座（标准坯、冷装）； 全部热装额定350 t/h座（标准坯、850 热装）；2.1.1.81#加热炉全炉采用高炉煤气，2#加热炉第一加热段采用转炉煤气，第二加热段及均热段采用高炉煤气，点火烧嘴采用转炉煤气。2.1.1.9供热方式：蓄热式烧嘴、六段供热，六段控制。2.1.1.10额定单耗：1342kj/kg（额定产量250t/h、普碳钢、冷装、标

4、准坯、稳定生产、新炉衬、煤气稳定、钢坯出炉温度1250）全部热装：920 kj/kg（额定产量350t/h）2.1.1.10氧化烧损：0.7%（额定产量、普碳钢、冷装、标准坯、稳定生产、新炉衬、煤气稳定、钢坯出炉温度1250）2.1.1.11蓄热烧嘴空气预热温度：约1050 蓄热烧嘴煤气预热温度：约10502.1.1.12步进机构型式：双轮斜轨，液压传动步进升降行程：200mm步进水平行程：550mm步进周期：50s1#炉蓄热燃烧系统l 全炉喷嘴采用左右交叉布置结构，每个喷嘴两个喷口交叉布置，分别与相邻喷嘴的喷口形成一组烧嘴，每段烧嘴的两端分别是空、煤气单喷口，全炉共设置80个喷嘴，共68道火

5、焰。为了保证炉墙的整体性和稳定性，适应此炉产量大、炉身短的特点，将各段烧嘴全部做成外置式，炉墙内只设置烧嘴砖，这样将大大减少烧嘴所占炉墙的面积，且炉墙可合理设隔热层。烧嘴砖与蓄热箱密封面采用承插“子母扣”双面密封形式，烧嘴砖外侧与炉墙采用多道折线密封形式，以确保烧嘴不漏气、不冒火，并改进烧嘴砖结构形式，延长其使用寿命。2#炉蓄热燃烧系统l 一加、二加喷嘴采用左右布置，每个喷嘴两个喷口交叉布置，分别与相邻喷嘴的喷口形成一组烧嘴，每段烧嘴的两端分别是空、煤气单喷口，均热段采用左右分隔式喷嘴，两个喷嘴形成一组完全独立的烧嘴，全炉共80个喷嘴，形成60道火焰。为了保证炉墙的整体性和稳定性，将各段烧嘴全

6、部做成外置式，炉墙内只设置烧嘴砖，这样将大大减少烧嘴所占炉墙的面积，且炉墙可合理设隔热层。2.1.15.1温度制度(温度制度进行试行)钢种公称厚度（mm）出炉温度（）目标fet（）第一加热段温度（）第二加热段温度（）均热段温度（）sphct2.211802010301050501260601280202.2t2.711702010201050501260601270202.7t3.211602010101050501260601260203.2t4.11150201010105050126060125020sphdt2.211902010601050501260601290202.2t2.71

7、1902010501050501260601290202.7t3.211802010401050501260601280203.2t4.11170201030105050126060127020sphet2.211902010501050501260601290202.2t2.711902010401050501260601290202.7t3.211802010301050501260601280203.2t4.11180201030105050126060128020qdt2.212002010401050501260601300202.2t2.7119020103010505012606

8、01290202.7t3.211802010201050501260601280203.2t4.11170201010105050126060127020sae1008t2.211902010301050501260601290202.2t2.711902010301050501260601290202.7t3.211802010201050501260601280203.2t4.11180201020105050126060128020ss330t2.211902010301050501260601290202.2t2.711902010301050501260601290202.7t3.2

9、11802010201050501260601280203.2t4.11180201020105050126060128020ss400t2.211902010201050501260601290202.2t2.711902010201050501260601290202.7t3.211902010201050501260601290203.2t5.111902010201050501260601290205.1t9.11180201000105050126060128020t9.11170201000105050126060127020ss400xt2.2120020102010505012

10、60601300202.2t2.711902010201050501260601290202.7t3.211902010201050501260601290203.2t4.11180201020105050126060128020t4.11170201020105050126060127020ss400bt2.211902010201050501260601290202.2t2.711902010201050501260601290202.7t3.211902010201050501260601290203.2t5.111902010201050501260601290205.1t9.1118

11、0201000105050126060128020t9.11170201000105050126060127020ss490t5.111902010001050501260601290205.1t7.111802010001050501260601280207.1t9.111702010001050501260601270209.11170201000105050126060127020q235a、q235bt5.111902010201050501260601290205.1t9.11180201000105050126060128020t9.111702010001050501260601

12、27020q345b、q345at5.111902010301050501260601290205.1t7.91180201010105050126060128020t7.91170201010105050126060127020q420bt5.112102010001050501260601300205.1t7.91200201000105050126060130020t7.91190201000105050126060129020na-1t5.111702010001050501260601270205.1t9.11160201000105050126060126020t9.1114020

13、1000105050126060124020s235jrl、s235jrht2.211902010301050501260601290202.2t2.711902010301050501260601290202.7t3.211802010201050501260601280203.2t5.111702010201050501260601270205.1t7.91160201010105050126060126020t7.91150201000105050126060125020s275jrl、s275jrht5.111902010301050501260601290205.1t7.911702

14、01020105050126060127020t7.91150201000105050126060125020s355jrl、s355j2l、s355j0lt5.111902010001050501260601290205.1t7.91180201000105050126060128020t7.91170201000105050126060127020h40t5.112002010001050501260601300205.1t7.91190201000105050126060129020t7.91180201000105050126060128020j55t5.111902010001050

15、501260601290205.1t7.91180201000105050126060128020t7.91160201000105050126060126020j55nbt5.112002010001050501260601300205.1t7.111902010001050501260601290207.1t9.11180201000105050126060128020t9.11180201000105050126060128020bt5.911802010001050501260601280205.9t7.91170201000105050126060127020t7.911602010

16、00105050126060126020x42(s290)t5.911802010001050501260601280205.9t7.91170201000105050126060127020t7.91160201000105050126060126020x52（s360）t5.111802010001050501260601280205.1t7.91170201000105050126060127020t7.91160201000105050126060126020l360mbt4.111902010001050501260601290204.1t7.91180201000105050126

17、060128020t7.91180201000105050126060128020x60(s415)t5.111902010001050501260601290205.1t7.91180201000105050126060128020t7.91180201000105050126060128020x65(s450)t4.111902010301050501260601290204.1t7.91180201030105050126060128020t7.91180201030105050126060128020x70t5.611902010001050501260601290205.6t7.91

18、180201000105050126060128020t7.91180201000105050126060128020t510lt2.712002010601050501260601300202.7t3.211902010501050501260601290203.2t5.111802010301050501260601280205.1t7.91170201010105050126060127020t7.91160201000105050126060126020t610lt5.11200209801050501260601300205.1t7.9120020980105050126060130

19、020t7.9120020980105050126060130020t800lt5.111802010001050501260601280205.1t7.91170201000105050126060127020t7.91160201000105050126060126020hp295t2.212002010401050501260601300202.2t2.711902010301050501260601290202.7t3.211902010201050501260601290203.2t4.11180201010105050126060128020t4.11170201000105050

20、126060127020380clt5.611802010101050501260601280205.6t7.91170201010105050126060127020t7.9116020101010505012606012602027tqt5.111902010001050501260601290205.1t7.111802010001050501260601280207.1t9.111802010001050501260601280209.1117020100010505012606012702020mntibt5.11190201040105050126060129020t5.11180

21、201030105050126060128020tg440qz tg480qzt3.212002010001050501260601300203.2t5.111902010001050501260601290205.1t7.91180201000105050126060128020t7.91170201000105050126060127020gr65t5.111902010001050501260601290205.1t7.91180201000105050126060128020t7.91170201000105050126060127020q345gnhlt3.2116020100010

22、50501260601260203.2t4.51160201000105050126060126020t4.51150201000105050126060125020wd1t2.211902010101050501260601290202.2t2.711902010101050501260601290202.7t3.211802010101050501260601280203.2t4.11180201010105050126060128020wd2t2.211902010101050501260601290202.2t2.711902010101050501260601290202.7t3.2

23、11802010101050501260601280203.2t4.11180201010105050126060128020saph370t2.212002010301050501260601300202.2t2.711902010201050501260601290202.7t3.211802010101050501260601280203.2t4.11170201010105050126060127020330clt5.611802010101050501260601280205.6t7.91170201010105050126060127020t7.911602010101050501260601260202.1.15.2 加热时间限制为防止钢坯过烧和氧化铁皮的大量积聚，在任何情况下钢坯在炉内加热时间不能