How to identify the authenticity of solder paste? A brief discussion.

Everyone is making a choice.Solder pasteOr when recycling solder paste, it is necessary to distinguish the authenticity of the solder paste. So, how should one distinguish it?The solder paste manufacturer believes that we should start from the following aspects. Let's take a look below:

Some unscrupulous merchants often use "zinc" and "potassium" to deceive people. This is because potassium and zinc also make a rusting sound. The main difference lies in burning them for two or three more minutes. Environmentally friendly tin is not afraid of fire, and potassium and zinc are also afraid of fire. Even if they are burned for two or three more minutes, they will still smoke. The colors are either blue or red. The difference lies here.

The specific methods for identifying genuine and fake tin are as follows: Tin is a silvery-white metal. The surface of newly cast tin ingots made of environmentally friendly tin often turns into a golden-yellow oxide film. When bending a tin bar with a little force, considering the important role of the tin double crystal, a rustling sound will also be produced. If you bite it with your mouth with a little force, it will feel like you are biting into a rustling sound, which is called the tinkling sound. The louder the tin sound, the better the quality. This is a basic skill for correctly understanding environmentally friendly tin.

Furthermore, if the tin contains silver, place some sample tin in a stainless steel bowl for burning,After melting, pour it to the ground and form the molten tin into sheets. The cooling sounds of the sample tin vary greatly. The environmental-friendly tin is not very loud, while the silver-containing tin makes a crisp and refreshing squeaking sound. Silver-containing tin is also an alloy, while environmental-friendly tin is just pure tin. Copper and aluminum are also very good. If it were an alloy, the sound would be much more stable and crisp.