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碳化铬堆焊耐磨钢板的粗糙度的处理需要注意什么?

所属分类:常见问题 发布时间:2021-04-23 来源:https://www.lcnaimoban.com/ 浏览量:

为了实现碳化铬堆焊耐磨钢板板面的平整的粗糙度,采取了一些处理工艺,效果也是不错的。比如在碳化铬堆焊耐磨钢板制成零件或产品后,就要进行表面的涂层处理,为了可以增强涂层的附着力,产品具有一定的表面粗糙度是比较有利的。但是我们要将这个粗糙度控制好,过大的话会影响板材表面的质量。
In order to achieve the smooth surface roughness of chromium carbide hardfacing wear-resistant steel plate, some treatment processes are adopted, and the effect is also good. For example, after chromium carbide hardfacing wear-resistant steel plate is made into parts or products, it is necessary to carry out surface coating treatment. In order to enhance the adhesion of the coating, it is more advantageous for the product to have a certain surface roughness. But we need to control the roughness well. If it is too large, it will affect the surface quality of the plate.
碳化铬堆焊耐磨钢板在很多领域都有应用,对于不同应用场合的不同用途,对它的粗糙度要求也有不同。在板材压制的过程中,制作设备如平整机工作辊上存在的粗糙双金属堆焊耐磨板(4+4、6+4、8+4)度会表现在表面法奥迪堆焊耐磨钢板(4+4、6+4、8+4)上。实践证明,工作辊辊面上的粗糙度和轧制力的大小对板面的粗糙度值都是有影响而,而且呈现的是非线性的正相关关系。
Chromium carbide hardfacing wear-resistant steel plate has been applied in many fields, and its roughness requirements are different for different applications. In the process of plate pressing, the roughness of the rough bimetal hardfacing wear-resistant plate (4 + 4, 6 + 4, 8 + 4) on the production equipment such as the work roll of temper mill will be shown on the hardfacing wear-resistant steel plate (4 + 4, 6 + 4, 8 + 4) by surface method. It has been proved that the roughness of work roll surface and rolling force have an effect on the roughness of plate surface, and it shows a nonlinear positive correlation.
NM450耐磨板
也就是说,相同条件下,碳化铬堆焊耐磨钢板越厚,轧制力越小,相应的粗糙度传递率就会越低。而且如果伸长率不变的话,张力越大轧制力越小,粗糙度的传递率也会越低。所以如果一旦发现板材的粗糙度已经不能符合要求了,那就提醒我们要考虑更换新的工作辊了。
In other words, under the same conditions, the thicker the chromium carbide hardfacing wear-resistant steel plate is, the smaller the rolling force is, the lower the roughness transfer rate will be. Moreover, if the elongation is constant, the higher the tension, the smaller the rolling force and the lower the roughness transfer rate. So if it is found that the roughness of the plate can not meet the requirements, it reminds us to consider replacing the new work roll.
看来,要控制好碳化铬堆焊耐磨钢板表面的粗糙度也不是件难事,是要记住影响它的几个主要因素和与粗糙度之间的关系,进行适当的调节就可以了。
It seems that it is not difficult to control the surface roughness of chromium carbide hardfacing wear-resistant steel plate. It is necessary to remember several main factors affecting it and the relationship between them and the roughness, and adjust them appropriately.
一、定期检查
1、 Regular inspection
首先应该对高硬度堆焊耐磨衬板的生产设备进行定时检查,严禁设备超龄服役。如果结晶器内有细小杂质混入就会引起水质的变化,因此要定期对结晶器中的水样进行检查。减轻弱化高硬度堆焊耐磨衬板边线裂纹的宽向程度和轧制边部的不均匀变形,降低高硬度堆焊耐磨衬板的展宽量是最佳方法,也就是说尽量用宽端面的铸坯生产大宽度的高硬度堆焊耐磨衬板。
First of all, the production equipment of high hardness hardfacing wear-resistant liner should be inspected regularly, and the equipment over age service is strictly prohibited. If there are small impurities mixed in the mold, it will cause the change of water quality, so the water sample in the mold should be checked regularly. It is the best way to reduce the width of the side line crack and the uneven deformation of the rolling edge of the high hardness hardfacing wear-resistant lining plate, and reduce the widening amount of the high hardness hardfacing wear-resistant lining plate.
二、动态控制
2、 Dynamic control
防止在高硬度堆焊耐磨衬板在弯曲过程中(卡斯特林、信铬钢、优霹)堆焊耐磨板铸坯的角部温度进入脆性区,所以要对不同宽度端面铸坯的角部温度进行动态控制,并实施弯曲段配水分区控制。降低轧件遍布的不均匀变形情况就要减风机叶片耐磨复合板(12+8、10+8、8+6)小轧件的上下面变形抗力差别,对板坯加热进行优化工艺,降低铸坯上下面的温差。防止发生局部的深度烧痕和清理不干净的精整后的铸坯表面氧化渣等二次缺陷,要通过提高高硬度堆焊耐磨衬板铸坯精整能力来实现。
In order to prevent the corner temperature of hardfacing wear-resistant liner slab from entering the brittle zone during the bending process (castellin, xincr steel, Youpeng), it is necessary to dynamically control the corner temperature of slab with different width end faces and implement the water distribution control in the bending section. In order to reduce the uneven deformation of the rolled pieces, it is necessary to reduce the deformation resistance difference between the upper and lower parts of the small rolled pieces of the fan blade wear-resistant composite plate (12 + 8, 10 + 8, 8 + 6), optimize the slab heating process, and reduce the temperature difference between the upper and lower parts of the slab. It is necessary to improve the finishing ability of high hardness hardfacing wear-resistant liner slab to prevent the occurrence of local deep burn marks and secondary defects such as unclean oxide slag on the slab surface after finishing.
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