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怎样查看你购买的耐磨板是不是受潮了!

所属分类:公司动态 发布时间:2021-05-14 来源:https://www.lcnaimoban.com/ 浏览量:

合金耐磨层的化学成分中碳含量达4~5%,铬含量高达25~30%,其金相组织中Cr7C3碳化物的体积分数达到50%以上,宏观硬度为HRC56~62,碳化铬的硬度为HV1400~1800。由于碳化物成于磨损方向相垂直分布,即使与同成分和硬度的铸造合金相比较,耐磨性能提高一倍以上。与几种典型的材料耐磨性对比如下:
The chemical composition of the wear-resistant layer is 4-5% carbon and 25-30% chromium. The volume fraction of Cr7C3 carbide in the metallographic structure is more than 50%. The macro hardness is hrc56-62 and the hardness of chromium carbide is hv1400-1800. Because carbides distribute vertically in the wear direction, the wear resistance of the alloy is more than twice as high as that of the cast alloy with the same composition and hardness. Compared with several typical materials, the wear resistance is as follows
(1)与低碳钢;20~25:1
(1) And low carbon steel; 20~25:1
(2)与铸态高铬铸铁;1.5~2.5:1
(2) Compared with as cast high chromium cast iron; 1.5~2.5:1
耐磨钢板受潮的鉴别和处理方法
Identification and treatment of damp of wear resistant steel plate
轻轻摇动,干燥发出的声音硬而脆,如果耐磨焊丝受潮,声音发钝。用受潮耐磨钢板焊接时如果耐磨复合钢板含水量非常高,甚至可以看到耐磨复合钢板表面有水蒸气发出来,或者当耐磨复合钢板烧焊一多半时,发现耐磨复合钢板尾部有裂纹现象存在。
Gently shake, dry sound hard and brittle, if the wear-resistant wire moisture, the sound blunt. If the moisture content of wear-resistant composite steel plate is very high when welding with damp wear-resistant steel plate, even water vapor can be seen on the surface of wear-resistant composite steel plate, or when more than half of the wear-resistant composite steel plate is welded, cracks are found at the tail of wear-resistant composite steel plate.
NM500耐磨板
那么,受潮后的耐磨钢板怎么处理呢?
So, how to deal with the wear-resistant steel plate after damp?
1、由于受潮焊芯有轻微锈迹,基本上不会影响性能。
1. Due to slight rust on the wetted core, the performance will not be affected basically.
2、受潮锈迹严重,可酌情降级使用或用于一般构件焊接。
2. Due to serious damp and rust, it can be degraded or used for general component welding.
3、受潮严重,甚至涂料中有锈蚀现象,这样的耐磨钢板虽经烘干,焊接时仍产生气孔或扩散氢含量很高,因而就能在使用了。
3. This kind of wear-resistant steel plate can be used because of its high moisture content and even corrosion in the coating.
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