电阻法是一种直接控制碳势的方法[1]。根据细铁镍丝在渗碳气氛中被迅速渗碳或脱碳而引起的电阻变化，即可连续测量与控制炉气碳势。它与钢箔定碳法最为接近。所以电阻法是具有较强的适应能力的一种碳势控制方法。但在实际应用中陆续暴露了不少问题。主要；司题是电阻探头的使用 Resistance method is a direct method of controlling carbon potential [1]. The carbon potential of the furnace gas can be continuously measured and controlled according to the resistance change caused by the rapid carburizing or decarburization of the fine iron nickel wire in the carburizing atmosphere. It is the closest carbon foil method. So the resistance method is a carbon potential control method with strong adaptability. However, in practice, many problems have been exposed one after another. Main; Division is the use of resistance probes