您好,欢迎来到济南新雄经贸有限公司官方网站!

400-0616-756

常见问题

changjianwenti

产品中心
当前位置: 首页-常见问题-关于镀锌板上锌渣的特点介绍

关于镀锌板上锌渣的特点介绍

来源:http://www.jnxxjm.com

【 发布于:2018-10-29 17:19:12 】


【定义与特征】

[definition and characteristics]

在热镀锌板面上分布有类似米粒的小颗粒或块状的不规则颗粒。有以下四种情况:

On the hot-dip galvanized sheet, small particles or blocky irregular grains resembling rice grains are distributed. There are four situations:

1、 渣带是金属镀层中沿纵向形成的条带状夹杂物。

1, the slag belt is a strip inclusion formed along the longitudinal direction in the metal coating.

2、 粗渣粒是指嵌在金属镀层中,尺寸为0.5~2.0mm的渣粒。

2. Coarse slag particles refer to the slag particles embedded in the metal coating with a size of 0.5~2.0mm.

3、 细渣粒是指在镀层中呈条状或聚集分布的直径小于0.5mm的细小渣粒。

3. Fine slag is a small slag particle with a diameter of less than 0.5mm in the coating.

4、 渣斑是指嵌于金属镀层中,尺寸为2.0mm~10mm的渣粒。

4. Slag spot is a slag particle embedded in a metal coating with a size of 2.0mm~10mm.

【产生原因】

[cause of formation]

1、 渣带:随带钢带出超细炉渣和来自炉鼻的锌灰均可导致渣带的出现。

1, slag belt: the extra slag and the zinc ash from the furnace nose can lead to the appearance of slag belt.

2、 细渣粒、粗渣粒:底渣、悬浮渣和浮面渣沉积在带钢上形成渣粒。

2. Fine slag and coarse slag: bottom slag, suspended slag and floating surface slag are deposited on the strip to form slag particles.

3、 渣斑:由粗大的浮面渣附着在带钢表面而造成的。该缺陷主要出现在厚的镀层和厚的带钢上。

20171214790170.jpg

3, slag spots: from the large floating surface slag to the surface of the strip. The defect mainly occurs on thick coating and thick strip steel.

以上因素易产生上述缺陷,锌液温度波动、捞渣不净、沉没辊使用超期、铝含量超标等。

The above factors are easy to produce the above defects, such as temperature fluctuation of zinc liquid, unclean dregs, overdue use of sinking rolls, excessive aluminum content and so on.

【预防与纠正】

[prevention and correction]

1、 控制锌液温度在460±5度,提高锌液温度控制稳定性,减少锌渣的产生。

1, control the temperature of zinc liquid at 460 + 5 degrees, improve the stability of zinc solution temperature, and reduce the production of zinc slag.

2、 在发现锌渣缺陷较多时,增加捞渣频次,及时捞取锌锅中的浮渣。同时适当降低 刀高度(根据带钢规格在50~450㎜之间调整),生产高表面要求镀锌板时,要使用氮气管进行吹渣处理。

2. When the defects of zinc slag are found, the frequency of slags can be increased and the scum in the zinc pot can be obtained in time. At the same time, properly reduce the height of the knife (according to the strip specifications between 50 and 450) to produce high surface requirements of galvanized sheets, the use of nitrogen pipe slag blowing treatment.

3、 在沉没辊系装配前,保证沉没辊修复质量,尤其是沉没辊沟槽和表面粗糙度和光 度要满足工艺要求,沉没辊按周期及时更换(每15天为一个周期)。

3. Before assembling the sinking roll system, ensure the repair quality of the sinking roll, especially the groove and surface roughness and luminosity of the sinking roll to meet the technological requirements, and replace the sinking roll in time according to the cycle (every 15 days for a cycle).

4、 锌液中铝含量稳定控制在0.18-0.22%。

4. The aluminum content in zinc solution is controlled at 0.18-0.22%.

【鉴别与判定】

[identification and determination]

可用肉眼判定,有粗渣粒和渣斑较重的手感,呈点状,块状,以及条状突出于镀锌板表面之上。高表面要求镀锌板不允许出现锌灰以上缺陷,普通用镀锌板允许出现

Can be judged by the naked eye, there are coarse slag particles and slag spots heavier feel, dot-like, block-like, and strip protruding above the surface of galvanized sheet. High surface requirements for galvanized steel are not allowed to appear above zinc dust defects, commonly allowed with galvanized steel plate.

有了上面济南镀锌管的小总结,希望对广大客户有所帮助,如果有什么不理解的或者寻求帮助的请点击我们的官方网站:http://www.jnxxjm.com或者来电咨询,我们会尽全力为您解决

With the above summary of Jinan galvanized pipe, I hope it will be helpful to our customers. If you have any incomprehension or seek help, please click our official website: http://www.jnxjm.com or call, we will try our best to solve it for you.



上一篇:精密无缝钢管冷加工硬化的处理作用
下一篇: 焊管特殊的种类详解