Introduction to Trimay Overlays
Five different types of overlays are available from三件事。他们包括：
- Chrome
- Complex
- Nano and
- 两种类型的钨覆盖层
Each of these will be described in more detail in the following sections.
这些覆盖物的磨损特性与彼此不同，但比常规的奥氏体，硬化或任何其他类型的钢都更好。
Selection of Overlays
几个变量决定了每个应用程序中覆盖的磨损长度。因此，客户选择三件事建议在考虑以下参数之后覆盖层：
- 保护性覆盖的服务寿命
- 将流过管道覆盖的材料的磨擦水平
- 覆盖层的影响程度
三层覆盖的类型
复杂的叠加层
复杂的叠加层适用于腐蚀性，高温环境，并使用以紧密的晶体基质形式粘合的独特碳化物混合物制成。The T161 complex overlaycan operate in temperatures up to 650°C or 1202°F and possesses better wear characteristics than the chrome overlays from三件事。T161复合物覆盖层最适合重型磨损应用，直接影响概率从轻度到中度不等。
镀铬覆盖
Due to their strong wear deterrent and impact absorbing nature, chrome overlays find the widest use in industrial applications. Three types of chrome overlays are available from三件事, namely,T138，T156和T157。They are well suited for operations in moderate-to-heavy wear environments and can absorb mild to moderate impact.
钨覆盖
Tungsten overlays from Trimay在叠加层中具有最艰难的磨损特性。它们在上方和低于50％以下的矩阵内容中可用。两种类型的主要区别因素是高于50％的钨覆盖仅作为单层覆盖层可用，而低于50％的类型可提供多达三层。Tungsten overlays from Trimay同样比其他两种类型的叠层更好地吸收影响。
纳米-Borocarbide叠加层
T171*硼质覆盖are the latest class of overlays from三件事。这类产品由三件事with an advanced materials company, NanoSteel Company. Nano is a sub-micron borocarbide alloy that displays far superior wear characteristics than tungsten overlays at much less cost.T171*覆盖Trimay最适合具有中等直接影响的重型到极端磨损应用。
三件事’s T171 Overlay
T171覆盖的描述
T171*覆盖由铁基制成三件事’s unique proprietary chemical composition having submicron microstructure. This overlay is suitable for extreme environments.三件事与纳米材料生产和研发的全球领导者Nanosteel Company，Inc。合作，开发了欧洲杯足球竞彩T171*覆盖。It has excellent glass forming chemistry that permits high levels of undercooling during welding. This helps in extremely refined nanosize- range crystalline microstructure, which gives theT171*与常规碳化物溶液相比，硬度要好得多。
T171覆盖的主要性能特征
High Hardness
T171*覆盖硬度测试额定值为68-71 HRC。从单个通行证应用程序中，沿整个覆盖层的焊缝界面具有出色的硬度，从而使整个覆盖层完整保护。即使在暴露于高温期间，它也可以保持这种硬度。下面的显微照片显示了如何在焊接覆盖界面中实现最大硬度。在显微照片中，硬度值是从单个通过T171*覆盖应用于44W/300W低碳钢板的底物。
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HRC硬度属性在整个层中是一致的
独特的耐磨性
T171*覆盖在恶劣的服务环境中具有极好的抵抗力。它可以根据需要在所有层的两次通过的两次通道中构建为1/2英寸的覆盖厚度。这提供了ASTM G65-04磨损测试中最高0.08-0.10 g（±0.03）质量损失的耐磨性。
高冲击电阻
T171*覆盖具有相当于400 Brinell Q＆T板的极好的韧性，这是由于焊缝内形成大量精制的复杂硼质相，周围是延性铁氧体相。硼质相通过基质完全润湿，避免分层，过早拉出和裂纹成核。硼生石比相的精致性质降低了应力浓度位点，并且延性基质可提供良好的裂纹钝化和桥接，从而导致更好的抗耐药性。
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T171microstructure showing uniform distribution of borocarbide phases
T171覆盖的生产和安装
T171*覆盖可用作低合金和碳钢底物的磨损板溶液。三件事’s proprietary Submerged Arc Bulk Overlay Welding Process is used for overlaying aT171*耐磨板。The overlay can be cut and fabricated to different specifications just like chrome carbide overlays. Forming or rolling is achieved using press brakes while cutting is accomplished through plasma arc or water jet methods, but it cannot be flame cut. Thickness and the position of the weld (on the inner or outer diameter) determine the formability of the overlay. For low-precision applications, it is possible to remove theT171*覆盖使用碳弧挖的材料。T171*覆盖are non-machinable, and based on requirement, can be surface-finished by EDM or grinding. Fillet or plug welding are the common methods for installing a T171*佩戴板，可以用插入物进行制造或螺栓固定以进行安装。佩戴板中的焊缝应与T171*焊缝，专门用于客户三件事，确保磨损均匀。
关于三件事
三件事开发和制造最高质量的磨损叠加层，以寻求通过延长暴露于严重磨损条件的设备，零件和管道的寿命，以最大程度地提高效率。2020欧洲杯下注官网三件事achieves its high-quality standard through research and development, partner companies and exclusive suppliers, as well as through in- house experimentation and process optimization.
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此信息已从Trimay Wear Plate Ltd提供的材料中采购，审查和调整欧洲杯足球竞彩
For more information on this source please visit三件事Wear Plate。