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高頻加熱機高效且節能

2019-07-09 9:13:34

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高頻加熱機是目前對金屬材料加熱效率較高、速度快，低耗節能環保型的感應加熱設備。

高頻加熱機的特點是溫度集中在表層，這就是為什么具有高效，節能和小變形的優點。然而，由于從硬化層到芯的溫度急劇變化，在過渡區中經常引起大的殘余拉應力。

從高頻加熱機淬火冷軋輥殘余應力的分布可以清楚地看到這一現象，對于經回火預熱處理的工件，在感應加熱過程中，其中一個過渡區的回火溫度高于回火溫度，但低于A，過渡回火區最終將變為弱區。

因此，對于感應加熱設備的淬火齒輪，如果硬化層較淺，在硬剪應力和外部載荷形成的高殘余拉伸應力的共同作用下，弱過渡區很可能會產生疲勞裂紋，會導致硬化層剝落。

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