CN108562163A - 解决因炉筋管黑印造成圆钢尺寸超差的工艺方法及系统 - Google Patents
解决因炉筋管黑印造成圆钢尺寸超差的工艺方法及系统 Download PDFInfo
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- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
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- F27B9/22—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace on rails, e.g. under the action of scrapers or pushers
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- F27—FURNACES; KILNS; OVENS; RETORTS
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- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
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- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
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- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/12—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity with special arrangements for preheating or cooling the charge
- F27B2009/122—Preheating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B2009/3083—Arrangements to handle skid marks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
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- F27M2001/02—Charges containing ferrous elements
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Abstract
本发明涉及加热炉领域,尤其涉及一种解决因炉筋管黑印造成圆钢尺寸超差的工艺方法,其包括以下步骤:第一步,将加热炉内的温度分为预热段、加热段及均热段,并对相应的温度进行设定;第二步,将加热炉的炉筋管由直线型更改为波浪形,末端为耐热滑块,钢坯从加热炉进料口进入加热炉后由推钢机依次推送至预热段、加热段及均热段后由出料口推出。本发明提供的装置能够解决因炉筋管黑印造成的圆钢尺寸超差。
Description
技术领域
本发明涉及加热炉领域,尤其涉及解决因炉筋管黑印造成圆钢尺寸超差的工艺方法及系统。
背景技术
轧钢加热炉尤其是推钢式加热炉在生产过程中,钢坯在直线设置的炉筋管上由推钢机推动向前运动的过程中,由于钢坯下面的冷却水带走了大量的热,而这部分热中包含了钢坯通过滑轨间接地传给水管的导热,以及钢坯直接与水管的辐射传热,此外还有水管对钢坯加热的遮蔽作用,这都大大降低了钢坯与水管接触位置的温度,使该处的钢坯其他部分有明显的温差,并且推钢式加热炉在加热过程中加热炉的炉筋管需要汽化冷却,炉筋管处的钢坯温度与别处的温度有差异,而且炉筋管处的钢坯表面温度与心部温度也有差异,多种因素造成的温度差异,使钢坯在加热过程中出现“黑印”,加之钢坯头中尾存在温差,根据轧制原理,如果温差大于30°,在轧制过程中就会出现尺寸的差异,总之,加热时钢坯温差过大是造成圆钢尺寸超差的主要原因。
发明内容
本发明所要解决的技术问题是提供解决因炉筋管黑印造成圆钢尺寸超差的工艺方法及系统。
本发明是通过以下技术方案予以实现:
解决因炉筋管黑印造成圆钢尺寸超差的工艺方法,其包括以下步骤:
第一步,将加热炉内的温度分为预热段、加热段及均热段,并对相应的温度进行设定;
第二步,将加热炉的炉筋管由直线型更改为波浪形,末端为耐热滑块,钢坯从加热炉进料口进入加热炉后由推钢机依次推送至预热段、加热段及均热段后由出料口推出。
进一步,还包括:
第三步,在加热炉炉体顶部喷涂硅酸铝耐火纤维。
解决因炉筋管黑印造成圆钢尺寸超差的系统,其包括加热炉炉体,所述加热炉炉体设有进料口及出料口,所述加热炉炉体内依次设置预热段、加热段及均热段,所述预热段及加热段均布有多根与加热炉炉体固定安装的炉筋管,所述进料口处安装有推钢机,所述均热段设有多个耐热滑块,所述耐热滑块一端与相应的炉筋管固定连接,另一端与加热炉炉体固定连接,多个所述炉筋管均为波浪形。
进一步,所述加热炉内安装有温度控制器。
进一步,所述加热炉炉体顶部喷涂有硅酸铝耐火纤维。
本发明的有益效果
解决因炉筋管黑印造成圆钢尺寸超差的工艺方法及系统,加热炉内依次设置预热段、加热段及均热段,预热段及加热段均布有多根与加热炉炉体固定安装的炉筋管,炉筋管均为波浪形,这样将现加热炉炉筋管的直线布置改为波浪线曲线布置,使钢坯在加热行走的过程中,由于温度差产生的“黑印”不在一条直线上,并且在推进过程中会逐渐减轻,“黑印”处与钢坯其它地方的温差缩小,以确保钢坯通体温度均匀,温度差小于30°,有效防止加热时钢坯温差过大造成圆钢尺寸超差;
另外将均热段改为耐热滑块形式,在加热时钢坯在推进的过程中由在气化冷却的炉筋管的滑行过渡到耐热滑块上,使钢坯在边加热边推进的过程中逐步消除炉筋管造成的“黑印”。
加热炉内安装有温度控制器,将加热温度进行分为预热段、加热段及均热段进行温度设定,加热方式由人工控制改为自动控温,通过温度智能控制,提高钢坯加热质量,确保钢坯头中尾温差符合工艺要求。
加热炉炉体顶部喷涂有硅酸铝耐火纤维,在加热过程中通过火焰的折射原理提高加热炉的热效率,降低煤气消耗,又可以使钢坯加热均匀,降低钢坯头中尾温差,进一步有效防止加热时钢坯温差过大造成圆钢尺寸超差。
附图说明
图1为本发明主视结构示意图;
图2为炉筋管及耐热滑块俯视结构示意图;
图中1.进料口,2.预热段,3.推钢机,4.加热段,5.均热段,6.加热炉炉体,7.出料口,8.温度控制器,9.炉筋管,10.耐热滑块。
具体实施方式
解决因炉筋管黑印造成圆钢尺寸超差的工艺方法,其包括以下步骤:
第一步,将加热炉内的温度分为预热段、加热段及均热段,并对相应的温度进行设定;
第二步,将加热炉的炉筋管由直线型更改为波浪形,末端为耐热滑块,钢坯从加热炉进料口进入加热炉后由推钢机依次推送至预热段、加热段及均热段后由出料口推出。
进一步,还包括:
第三步,在加热炉炉体顶部喷涂硅酸铝耐火纤维。
解决因炉筋管黑印造成圆钢尺寸超差的系统,其包括加热炉炉体6,所述加热炉炉体设有进料口1及出料口7,所述加热炉炉体内依次设置预热段2、加热段4及均热段5,所述预热段及加热段均布有多根与加热炉炉体固定安装的炉筋管9,所述进料口处安装有推钢机3,所述均热段设有多个耐热滑块,所述耐热滑块10一端与相应的炉筋管固定连接,另一端与加热炉炉体固定连接,多个所述炉筋管均为波浪形。
进一步,所述加热炉内安装有温度控制器8。
进一步,所述加热炉炉体顶部喷涂有硅酸铝耐火纤维。
由于解决因炉筋管黑印造成圆钢尺寸超差的工艺方法及系统,加热炉内依次设置预热段、加热段及均热段,预热段及加热段均布有多根与加热炉炉体固定安装的炉筋管,炉筋管均为波浪形,这样将现加热炉炉筋管的直线布置改为波浪线曲线布置,使钢坯在加热行走的过程中,由于温度差产生的“黑印”不在一条直线上,并且在推进过程中会逐渐减轻,“黑印”处与钢坯其它地方的温差缩小,以确保钢坯通体温度均匀,温度差小于30°,有效防止加热时钢坯温差过大造成圆钢尺寸超差;
另外将均热段改为耐热滑块形式,在加热时钢坯在推进的过程中由在气化冷却的炉筋管的滑行过渡到耐热滑块上,使钢坯在边加热边推进的过程中逐步消除炉筋管造成的“黑印”。
加热炉内安装有温度控制器,将加热温度进行分为预热段、加热段及均热段进行温度设定,加热方式由人工控制改为自动控温,通过温度智能控制,提高钢坯加热质量,确保钢坯头中尾温差符合工艺要求。
加热炉炉体顶部喷涂有硅酸铝耐火纤维,在加热过程中通过火焰的折射原理提高加热炉的热效率,降低煤气消耗,又可以使钢坯加热均匀,降低钢坯头中尾温差,进一步有效防止加热时钢坯温差过大造成圆钢尺寸超差。
以上所述仅为本发明的优选实施例而已,并不用于限制本发明,对于本领域的技术人员来说,本发明可以有各种更改和变化。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (5)
1.解决因炉筋管黑印造成圆钢尺寸超差的工艺方法,其特征在于,包括以下步骤:
第一步,将加热炉内的温度分为预热段、加热段及均热段,并对相应的温度进行设定;
第二步,将加热炉的炉筋管由直线型更改为波浪形,末端为耐热滑块,钢坯从加热炉进料口进入加热炉后由推钢机依次推送至预热段、加热段及均热段后由出料口推出。
2.根据权利要求1所述的解决因炉筋管黑印造成圆钢尺寸超差的工艺方发,其特征在于,还包括:
第三步,在加热炉炉体顶部喷涂硅酸铝耐火纤维。
3.解决因炉筋管黑印造成圆钢尺寸超差的系统,其特征在于,包括加热炉炉体,所述加热炉炉体设有进料口及出料口,所述加热炉炉体内依次设置预热段、加热段及均热段,所述预热段及加热段均布有多根与加热炉炉体固定安装的炉筋管,所述进料口处安装有推钢机,所述均热段设有多个耐热滑块,所述耐热滑块一端与相应的炉筋管固定连接,另一端与加热炉炉体固定连接,多个所述炉筋管均为波浪形。
4.根据权利要求3所述的解决因炉筋管黑印造成圆钢尺寸超差的系统,其特征在于,所述加热炉内安装有温度控制器。
5.根据权利要求3所述的解决因炉筋管黑印造成圆钢尺寸超差的系统,其特征在于,所述加热炉炉体顶部喷涂有硅酸铝耐火纤维。
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CN111795570A (zh) * | 2020-06-28 | 2020-10-20 | 宣城知明灯机械设计有限公司 | 一种圆钢加热炉用防黑印效果好的炉内传送装置 |
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CN103103337A (zh) * | 2013-02-21 | 2013-05-15 | 武汉钢铁(集团)公司 | 减小步进梁加热炉钢坯水梁黑印的方法 |
CN204080042U (zh) * | 2014-09-29 | 2015-01-07 | 河北钢铁股份有限公司 | 一种用于推钢式加热炉的钢坯滑道 |
CN204848959U (zh) * | 2015-08-19 | 2015-12-09 | 河北钢铁股份有限公司 | 推钢式连续加热炉的高效节能耐热滑轨 |
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