双金属复层nm400耐磨板是专供大面积磨损工况使用的板材产品，是在韧性、塑性很好的普通低碳钢或者低合金钢表面通过堆焊方法复合一定厚度的硬度较高、耐磨性优良的耐磨层而制成的板材产品。

Clad nm400 wear-resistant plate is used for large area wear plate products operation, the toughness, plasticity is good ordinary low-carbon steel or low-alloy steel surface by excellent wear-resisting layer surfacing method of composite thickness with high hardness, wear resistance and made of sheet metal products.

双金属复合耐磨钢板由低碳钢板和合金耐磨层两部分组成，抗磨层一般占总厚度的1/3－1/2。工作时由基体提供抵抗外力的强度、韧性和塑性等综合性能，由耐磨层提供满足指定工况需求的耐磨性能。

Double metal composite wear-resistant plate made of low carbon steel and alloy wear resistant layer is composed of two parts, the general wear layer of total thickness 1 / 31 / 2. In the work, the strength, toughness and plasticity of the matrix are provided by the matrix, and the wear resistant layer is provided to meet the requirements of the specified working conditions.

nm400耐磨钢板合金耐磨层和基体之间是冶金结合。通过专用设备，采用自动焊接工艺，将高硬度自保护合金焊丝均匀地焊接在基材上，复合层数一层至两层以至多层，复合过程中由于合金收缩比不同，出现均匀横向裂纹，这是耐磨钢板的显著特点。

Metallurgical bonding between wear resistant layer and matrix of nm400 wear-resistant steel plate alloy. Through special equipment, automatic welding process, the high hardness of self protection alloy wire is uniformly welded on the substrate, composite layers one layer to two layers or multilayer, composite process because of different alloy contraction ratio, uniform transverse crack, this is a significant characteristic of wear resistant steel plate.

nm400耐磨板耐磨层主要以铬合金为主，同时还添加锰、钼、铌、镍等其它合金成份，金相组织中碳化物呈纤维状分布，纤维方向与表面垂直。碳化物显微硬度可以达到HV1700-2000以上，表面硬度可达到HRc58-62。合金碳化物在高温下有很强的稳定性，保持较高的硬度，同时还具有很好的抗氧化性能，在500℃以内完全正常使用。

The wear resistance of nm400 wear resistant layer is mainly based on chromium alloy, and also the other alloy elements such as manganese, molybdenum, niobium, nickel and other alloys. Carbide micro hardness can reach HV1700-2000 above, the surface hardness can reach HRc58-62. Alloy carbide has a strong stability at high temperature, maintain a high hardness, but also has a very good antioxidant properties, in the normal use of 500.

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