V2EX minimum design metal temperature

Minimum Design Metal Temperature

定义 Definition

“Minimum Design Metal Temperature”(简称 MDMT)指设备或管道在设计工况下金属可能达到的最低温度(通常以 °C/°F 表示)。它用于确定材料在低温下是否仍具备足够韧性,从而降低低温脆断风险。工程语境中常见于压力容器、储罐与管道规范;某些情况下还会与材料冲击试验要求、许用应力折减等规则相关联。

发音 Pronunciation

/mnmm dzan mtl tmprtr/

例句 Examples

The vessel’s minimum design metal temperature is 20°C.
该容器的最低设计金属温度为 20°C。

If the minimum design metal temperature is below the material’s tested range, additional impact testing may be required to prevent brittle fracture.
如果最低设计金属温度低于材料已验证的试验温度范围,可能需要进行额外的冲击试验以避免低温脆断。

词源 Etymology

这是一个工程复合术语minimum(最低的)+ design(设计的)+ metal(金属)+ temperature(温度)。它并非来自文学典故,而是在压力设备与材料工程中,为了把“设计最冷状态下金属温度”这一关键安全参数表达得明确、可审核而形成的标准化说法。

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