How to clean the inner hole of a stainless steel capillary tube

Stainless steel capillary tubes can be used in industries such as medical equipment, precision instruments, and fluid transportation. These industries have high requirements for the dimensional accuracy, material performance, and cleanliness of metal pipes. However, due to the relatively small inner diameter of the capillary tube, many people do not know how to clean the inner hole of the stainless steel capillary tube. Today, I will introduce several suitable cleaning methods to you:

1. If the cleanliness requirement is low, physical cleaning can be used to immerse the capillary tube in heated degreasing liquid, and then circulate and rinse it with air or water. It would be better if there was a brush of the right size to wipe back and forth.

2. If the cleanliness requirement is high, use ultrasonic cleaning. The principle of ultrasonic cleaning is that when ultrasonic waves are transmitted in liquids, the sound pressure changes sharply, resulting in a strong air phenomenon in the liquid, and millions of tiny cavitation bubbles are generated per second. These bubbles are generated rapidly and in large quantities under the effect of sound pressure. They will not explode violently but will generate strong impact force and negative pressure suction, which is enough to make stubborn dirt fall off quickly. If the stainless steel capillary tube is relatively long and has a water tank, you can buy an ultrasonic oscillating plate and put it in water for ultrasonic cleaning. If the time is not long, you can insert the ultrasonic oscillator into the pipe for cleaning and then use tap water to rinse off the dirt removed by the ultrasonic wave.

3. Chemical cleaning refers to the use of chemical reagents to clean the inner wall of the capillary, such as low-concentration hydrochloric acid, ethanol, and other solutions, which have a strong cleaning effect. How to clean the inner hole of the stainless steel capillary? Including physical cleaning, chemical cleaning, and high-pressure ultrasonic cleaning. When cleaning, you need to pay attention to factors such as the concentration of the cleaning solution, and the shape and material of the inside of the capillary.