Why does the heating-wire multi-section use in series burn out?

As a silicone heating wire manufacturer, not only seen and heard this problem , I have used individual friends in the past , the beginning of the problem is why it will burn out, of course I will ask, is the temperature control, the customer will answer the control is very good, since the temperature control is very good, how can it burn out ? Now let me explain why it burned out.

1. When customers use the heating wire, will be meet the length of each section of the heating wire are not the same . 

2. There is confusion in specifications when customers use segments. 

3. Length of each section is not uniform, which means that each section of resistance is different, voltage used must be the same voltage, resulting in different power each section, each section of power is not the same, there will be different temperature of each section of heating wire, since each section of heating wire temperature is not the same, you have done each section of temperature control ? That's why the temperature is controlled and it burns out .

If each section of the heating wire is heated to control the temperature, there will certainly be no burning out, but the cost will increase, cost has a great impact on the sales of the product. In fact, not only the increase in cost, but also increase the processing difficulty of the product, resulting in an increase in the failure rate of the product itself , Actually, because of the cost problem, do not have the heart to throw away the excess thread and the end of the wire , which will lead to such problems for many users, I have the following suggestions for friends to share :

1. The heating-wire must be same resistance . 

2. The diameter, length and insulation material of each section of the heating-wire must be the same, it is best to use the same manufacturer, do not mix the tail of several manufacturers . 

3. Test the resistance of each section of the heating wire before use, closest resistance range can be used in series 

4. After the wire is connected in series, the resistance is measured and power is calculated to determine whether the power meets the requirements 

5. After the power meets the requirements, a temperature protector can be designed for the entire series wire .

After understanding the above situation, referring to the above method of use can basically avoid the appearance of burning , but the electric heating product is a very magical product, weather changes, the use of the environment, stability factor of voltage, the layout uniformity of the heating wire, stability energy of the joint . Any problem will be the main cause of burnout, can only be said that the more the user understands the product, the less likely it is to burn, can only make the decision according to the situation at the time, it is best not to use the wire and the end of the line directly lost a solid permanent .