1. The design of the ultrasonic mold is unreasonable, the workmanship is fine, the optimal frequency is not reached, frequency shaping, etc. During the use process, the ultrasonic energy is not fully released, and most of it remains in the ultrasonic mold. With the passage of time, the mold is in use. There will be welding in the middle, and the mold is hot to the back of the mold, and the phenomenon of cracks should be solved.
2. Ultrasonic mold is in material selection. Generally, there are three main materials commonly used in ultrasonic mold making: steel, magnesium, aluminum alloy, and titanium alloy, which are very different from magnesium alloys. Generally, imported 7075 aluminum alloy is selected, which has good wear resistance, corrosion resistance, good mechanical properties and slightly hardness. high. Compared with other aluminum alloys, it is the material of ultrasonic mold selection, which is relatively expensive, and is generally used in aircraft structures. Secondly, 6061 has low density, good corrosion resistance, and good comprehensive mechanical and cutting performance at room temperature. Steel molds and titanium alloy molds are mostly used to make relatively simple molds. Because of their high hardness and difficulty in cutting, they are generally used to make relatively flat molds. Among the three materials, titanium alloy has the highest service life, almost no cracks, and the price is the most expensive of the three materials.