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教你如何鉴别电热管的好坏

发布时间: 2015-11-24 19:16 作者: 浏览次数: 字号:
教你如何鉴别电热管的好坏

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教你如何鉴别电热管的好坏
特耐佳电热今天就客户在选购的时候找如何鉴别电热管,今天我们从电热管电气强度,绝缘,泄漏电流,功率准确性,和使用寿命上去判断电热管的好坏,下面我们从这几个来分别介绍一下:希望对大家有帮助。
一、电气强度:电热管电气强度的影响因素主要包括绝缘层的厚度、绝缘层的原料质量、电热管的长度、弯曲的半径及弯曲的个数。
A, electric strength, electrical strength of the electric heating tube influencing factors mainly include the thickness of insulating layer, insulating layer quality of raw materials, the electric heat pipe bending length, bending radius and the number of.
二、绝缘:影响电热管绝缘的主要是电热管的封口工艺。好的电热管一般能做到1000兆欧以上。
Insulation: impact of electric heat pipe insulation is mainly electric heat pipe sealing process. A good general electric heating tube can achieve more than 1000 ohms.
三、泄漏电流:主要与电热管使用时的温度、电热管的使用电压、电热管的发热长度等有关,这也是对高温电热管的一个重要考核指标。
Three, leakage current, and when using the temperature of the electric heating tube, the use of electric heating tube voltage, such as heat of electric heat pipe length, it is also an important evaluation index of high temperature of electric heat pipe.
四、功率准确性:主要与电阻丝的质量、制造厂的工艺水平有关。合格的电热管在批量生产前都需要做温度系数的试验,以确定合格的功率范围的冷态电阻。
The four major with accuracy, power, resistance wire quality, manufacturing technology level. Qualified in the electric heating tube temperature coefficient needs to be done before mass production test, to determine the qualified power range of cold resistance.
五、寿命:电热管的寿命除了与电阻丝质量有关外,还与氧化镁粉的质量、电阻丝直径的选择等因素有关。对于高温电热管,电热管应当是制造表面负荷在8W/CM2以下的电热管,因此,在选择电阻丝的直径时,需计算电阻丝的表面负荷以达到寿命要求。
Five, the life: the life of the electric heating tube in addition to related to the resistance wire quality, also with the quality of magnesium oxide powder, selection of resistance wire diameter and other factors. For high temperature electric heat pipe, electric heat pipe should be made under surface load in 8 w/CM2 of electric heat pipe, therefore, when choosing the diameter of the wire, the resistance wire to the surface of the load to achieve the requirements of life.
六、耐腐蚀性:它是水加热电热管与烧烤电热管经常遇到的问题。除了合理的选择材料之外,还与电热管的热处理,电热管的表面状态等有关。
Six, corrosion resistance: it is the water heating and electric heating tube barbecue electric heat pipe often encountered problems. In addition to the reasonable selection of materials, and the electric heat pipe heat treatment, the surface state of electric heating tube and so on.

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电加管好坏的鉴别

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