Brinell hardness number

简明释义

布氏硬度值布氏硬度数布式硬度数

英英释义

例句

1.In our lab, we routinely test the Brinell hardness number (布氏硬度值) of metals to ensure quality control.

在我们的实验室中，我们定期测试金属的布氏硬度值以确保质量控制。

2.The manufacturer provides a detailed report that includes the Brinell hardness number (布氏硬度值) for all tested samples.

制造商提供了详细报告，其中包括所有测试样本的布氏硬度值。

3.Before selecting materials, we need to measure the Brinell hardness number (布氏硬度值) of each candidate material.

在选择材料之前，我们需要测量每种候选材料的布氏硬度值。

4.A higher Brinell hardness number (布氏硬度值) indicates better resistance to wear and deformation.

更高的布氏硬度值表示更好的耐磨性和变形抵抗力。

5.The steel used in this construction has a high Brinell hardness number (布氏硬度值), making it suitable for heavy-duty applications.

这项工程中使用的钢材具有较高的布氏硬度值，使其适合重载应用。

作文

The importance of material properties in engineering cannot be overstated. Among these properties, hardness is a crucial factor that determines the suitability of materials for various applications. One of the most widely used methods for measuring hardness is the Brinell hardness test, which provides valuable insights into the durability and performance of materials. The Brinell hardness number (BHN) is a numerical value that represents the hardness of a material based on the indentation made by a hard ball under a specific load. This testing method was developed by Johan August Brinell in 1900 and has since become a standard in the industry.The Brinell hardness number is determined by pressing a hardened steel or carbide ball into the surface of a material with a specified force. The diameter of the indentation left on the material's surface is measured, and the Brinell hardness number is calculated using a specific formula that takes into account the load applied and the diameter of the indentation. The resulting value gives engineers and materials scientists a quantifiable measure of hardness that can be compared across different materials.One of the advantages of the Brinell hardness number is its applicability to a wide range of materials, including metals and non-metals. It is particularly useful for materials that have coarse or uneven structures, as the larger indentations created by the test can provide a more accurate representation of the material's overall hardness. However, it is important to note that the Brinell hardness number is not suitable for very hard materials, as the indentation may not be measurable, leading to inaccurate results.Understanding the Brinell hardness number is essential for engineers when selecting materials for specific applications. For instance, in construction, materials with high hardness are often required for structural components to ensure they can withstand wear and tear over time. Similarly, in manufacturing processes, knowing the hardness of materials can help in choosing the right tools and techniques for machining and fabrication.Moreover, the Brinell hardness number can also serve as an indicator of other material properties, such as tensile strength and ductility. Generally, harder materials tend to exhibit higher tensile strength, making them suitable for heavy-duty applications. However, it is crucial to strike a balance between hardness and ductility, as overly hard materials may become brittle and prone to cracking under stress.In conclusion, the Brinell hardness number is a vital metric in materials science and engineering that helps in evaluating the hardness and performance of materials. By understanding this measurement, professionals can make informed decisions regarding material selection and application, ensuring that the desired properties are achieved for a wide range of engineering projects. As technology advances and new materials are developed, the significance of hardness testing methods like the Brinell hardness number will continue to play a critical role in the fields of engineering and manufacturing.

在工程中，材料性能的重要性不容小觑。在这些性能中，硬度是一个关键因素，它决定了材料在各种应用中的适用性。测量硬度的最广泛使用的方法之一是布氏硬度测试，它提供了有关材料耐久性和性能的宝贵见解。布氏硬度值（BHN）是一个数值，表示材料的硬度，基于在特定负载下硬球造成的压痕。这个测试方法是由约翰·奥古斯特·布氏于1900年开发的，并且自那时起已成为行业标准。布氏硬度值是通过将一个硬化的钢球或碳化球体压入材料表面并施加特定的力来确定的。测量留在材料表面上的压痕直径，然后使用特定公式计算出布氏硬度值，该公式考虑了施加的负载和压痕的直径。得到的值为工程师和材料科学家提供了一个可量化的硬度测量，可以在不同材料之间进行比较。布氏硬度值的一个优点是它适用于广泛的材料，包括金属和非金属。对于具有粗糙或不均匀结构的材料尤其有用，因为测试所产生的较大压痕可以更准确地代表材料的整体硬度。然而，需要注意的是，布氏硬度值不适用于非常硬的材料，因为压痕可能无法测量，从而导致结果不准确。了解布氏硬度值对于工程师在选择特定应用的材料时至关重要。例如，在建筑中，通常需要高硬度的材料用于结构组件，以确保它们能够承受随时间推移的磨损。同样，在制造过程中，了解材料的硬度可以帮助选择合适的工具和加工技术。此外，布氏硬度值还可以作为其他材料性能的指标，例如抗拉强度和延展性。一般来说，硬度较高的材料往往表现出较高的抗拉强度，使其适合重型应用。然而，必须在硬度和延展性之间找到平衡，因为过硬的材料可能变得脆弱，并在应力作用下容易开裂。总之，布氏硬度值是材料科学和工程中一个重要的指标，帮助评估材料的硬度和性能。通过了解这一测量，专业人士可以在材料选择和应用方面做出明智的决策，确保在广泛的工程项目中实现所需的性能。随着技术的进步和新材料的发展，像布氏硬度值这样的硬度测试方法的重要性将在工程和制造领域继续发挥关键作用。