cold crack

简明释义

低温龟裂

英英释义

例句

1.The ceramic vase developed a cold crack 冷裂纹 after being exposed to freezing temperatures.

这个陶瓷花瓶在暴露于零度以下的温度后，出现了一个cold crack 冷裂纹。

2.Engineers must consider the risk of cold cracks 冷裂纹 when designing structures in cold climates.

工程师在设计寒冷气候下的结构时，必须考虑到cold cracks 冷裂纹的风险。

3.After inspecting the welds, the technician found a cold crack 冷裂纹 that could compromise the integrity of the metal.

检查焊缝后，技术人员发现了一个可能影响金属完整性的cold crack 冷裂纹。

4.The contractor warned us about potential cold cracks 冷裂纹 in the concrete if it was poured during the frost.

承包商警告我们，如果在霜冻期间浇筑混凝土，可能会出现cold cracks 冷裂纹。

5.During the winter, the sudden temperature drop caused a cold crack 冷裂纹 in the pavement.

冬天，温度骤降导致人行道出现了一个cold crack 冷裂纹。

作文

In the world of materials science and engineering, understanding different types of cracks that can form in various substances is crucial. One such phenomenon is known as a cold crack. A cold crack refers to a type of fracture that occurs in a material, typically metal or plastic, due to low temperatures during the manufacturing process or in service. These cracks can be detrimental to the integrity of structures and components, leading to catastrophic failures if not addressed properly.The formation of a cold crack usually occurs when a material is subjected to stress while it is at a low temperature. When metals are welded or shaped at lower temperatures, they can become brittle and more susceptible to cracking. This brittleness is often exacerbated by the presence of impurities or specific alloy compositions that do not perform well under cold conditions. For example, certain steels may develop cold cracks when welded in sub-zero environments, which can lead to unexpected failures in critical infrastructure, such as bridges and pipelines.To prevent cold cracks, engineers must consider several factors during the design and manufacturing processes. One effective strategy is to select materials that have better toughness and ductility at lower temperatures. Additionally, preheating the material before welding can help to minimize the temperature differential and reduce the likelihood of crack formation. Post-weld heat treatment is another method used to relieve internal stresses that could lead to cold cracks.It is also essential to conduct thorough inspections and quality control measures to identify potential weaknesses in materials that may lead to cold cracks. Non-destructive testing methods, such as ultrasonic testing or radiography, can be employed to detect internal flaws that might not be visible on the surface. By identifying these issues early, engineers can take corrective actions to ensure the safety and reliability of their products.In conclusion, understanding the concept of a cold crack is vital for anyone involved in materials engineering or manufacturing. The implications of cold cracks can be far-reaching, affecting not only the performance of individual components but also the overall safety of entire systems. By implementing proper preventive measures and maintaining rigorous inspection protocols, the risks associated with cold cracks can be significantly reduced, ensuring that structures remain safe and functional even in challenging environmental conditions.

在材料科学和工程的世界中，理解各种物质中可能形成的不同类型裂缝至关重要。其中一种现象被称为冷裂纹。冷裂纹是指在材料（通常是金属或塑料）中由于制造过程或服务期间的低温而发生的一种断裂。这些裂缝可能对结构和组件的完整性产生不利影响，如果不妥善处理，可能导致灾难性的故障。冷裂纹的形成通常发生在材料在低温下受到应力时。当金属在较低温度下焊接或成型时，它们可能变得脆弱，更容易发生裂纹。这种脆性通常因杂质或在寒冷条件下表现不佳的特定合金成分而加剧。例如，某些钢材在零下环境中焊接时可能会产生冷裂纹，这可能导致关键基础设施（如桥梁和管道）出现意外故障。为了防止冷裂纹，工程师在设计和制造过程中必须考虑几个因素。一种有效的策略是选择在低温下具有更好韧性和延展性的材料。此外，在焊接之前对材料进行预热可以帮助减少温差，从而降低裂纹形成的可能性。后焊热处理是另一种用于缓解可能导致冷裂纹的内部应力的方法。同样，进行彻底的检查和质量控制措施也至关重要，以识别可能导致冷裂纹的材料中的潜在弱点。无损检测方法，例如超声波检测或射线摄影，可以用于检测可能在表面上不可见的内部缺陷。通过及早识别这些问题，工程师可以采取纠正措施，以确保其产品的安全性和可靠性。总之，理解冷裂纹的概念对于任何参与材料工程或制造的人来说都是至关重要的。冷裂纹的影响可能远-reaching，不仅影响单个组件的性能，还影响整个系统的整体安全性。通过实施适当的预防措施并保持严格的检查协议，与冷裂纹相关的风险可以大大降低，从而确保结构在严峻的环境条件下仍然安全和功能正常。