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高頻淬火設備深度達不到的原因以及解決方案

高頻淬火設備深度達不到的原因有哪些？

比如一根軸類件淬火，材料是40Cr，要求深度要達到7~10mm，如果選用高頻感應加熱設備設備的話就會出現以下問題：

高頻爐軸淬火

高頻爐軸淬火

淬火深度達不到，且出現內裂紋，完成不了需要達到的工藝要求。

出現以上這種現象的原因有哪些呢，經過分析如下：

采用高頻感應加熱設備對工件進行淬火，該工件要求的深度爲7~10mm，一次加熱的話表面溫度太高的話肯定會有裂紋，多次加熱的話先不說能不能實現，成本也太大，即使使用高頻能達到這樣深度的話，一次加熱的話估計表面已經熔了，即使采用多次加熱，都不好保證。原因是高頻的特點是對金屬表面感應加熱熱處理，利用的是集膚效應，一般都是小于3mm的應該比較好控制。高頻的電流透入深度是有其頻率決定的，電流滲透不足，加熱時間過長，由于肌膚效應，表面溫度過高，引起淬火開裂。

解決辦法：

這樣的淬火深度，建議采用中頻感應加熱電源，中頻的頻率高，淬火層深，使用整體淬火工藝，能達到工藝的要求。

中頻爐

中頻爐

以上實例可以看出，選擇合適頻率的機器，合理的加工方法等的重要性，我公司配備有工藝裝備研究室，爲客戶提供選型、工裝研制、感應器制作等全面解決方案。.也可到現場安裝調試,並可配置各種感應器,以滿足貴廠的各種需要。

標簽: 高頻爐維修

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