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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、11802010101050501260601280203.2T4.11180201010105050126060128020SAPH370T2.212002010301050501260601300202.2T2.711902010201050501260601290202.7T3.211802010101050501260601280203.2T4.11170201010105050126060127020330CLT5.611802010101050501260601280205.6T7.91170201010105050126060127020T7.911602010101050501
24、260601260202.1.15.2 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超过8小时，否则请示当班领导，将钢坯从出钢侧或装钢侧剔出。2.1.15.3空燃比设定纯高炉煤气时，空燃比1:0.72；转炉煤气时，空燃比1:1.322.1.15.4 炉子升温为延长炉子耐材寿命，最大升温、降温速度应小于150/h。2.1.15.5 排烟温度设定空烟、煤烟排烟温度暂定为120150，当排烟温度高于180时应立即关闭排烟阀。2.1.15.6 炉压控制炉压应设定为+2030Pa，操作工可根据蓄热室排烟温度变化，先调引风机前调节阀开度，再调各段烟闸开度2.1.15.
25、7 换向制度换向周期在30120秒范围内可调，正常为3045秒，采用双重信号控制：定时控制和定温控制。换向阀后排烟温度控制在120150，通过排烟调节阀可进行微调，若过高或过低应调整换向时间。3.1.3 烘炉烘炉曲线： 3.1.3.1点烘炉烧嘴(按照后附烘炉曲线)；3.1.3.2用同样方法引高炉煤气；3.1.3.3当温度达到600以上时，开启蓄热烧嘴；3.1.3.4炉温在1000以上时自由提温。3.4.2空气压力过低正常状态下空气总管压力12000Pa。当低于3000Pa时，控制系统自动切断煤气，自动停炉。操作工应随时注意空气压力变化，当低于4000Pa时，应及时与动力工段联系。自动停炉后，操作工顺序同上。3.4.3压缩空气压力过低压缩空气正常压力为400000Pa，当低于200000Pa时，控制系统自动切断煤气，自动停炉。操作工应随时注意压缩空气压力变化，当低于250000Pa时，应及时与动力工段联系。自动停炉后，操作工顺序同上。3.4.4净环水压力过低净环水正常压力为400000Pa，当低于100000Pa时，控制系统自动切断煤气，自动停炉。操作工应随时注意净环水压力变化，当低于150000Pa时，应及时与动力工段联系。自动停炉后，操作工顺序同上。
