Thermocouple on the surface of black finish easy way

Thermocouple on the surface of black finish

* simple method in the thermocouple is sometimes used in the production process of black finish, heat treatment is stainless steel and other metal objects of a process of heat treatment, treatment after surface have a layer of oxide film in order to achieve the purpose of anticorrosion. After heat treatment can improve wear resistance on the surface of the heating tube, improve the surface hardness, and will not affect the thermocouple parts inside.

normal working condition, the thermocouple on the surface of black finish the following steps: * simple method to

1, the first of the metal surface cleaning, keep clean;

2, 2 it is surface of degreasing process, this process can be placed tube is completely in degreaser. Degreasing fluid PH * May 13 or so, time is not less than half an hour. With clean water after degreasing.

3, the next for pickling, pickling solution PH around 3, the processing time is not longer than 10 minutes, after pickling clean water;

4, black finish, pool PH 2 - liquid concentration 4, the processing time for 10 minutes, after black very clean;

5, * after drying, oil;

can be in accordance with the above five, black finish for thermocouple is a very effective method.