The development of SMT Nozzle technology

The development of SMT Nozzle technology

Although the SMT nozzle technology has been developed for many years, has been able to meet the needs of the placement of production, but because of 0201 and 01005 small component applications, nozzle smaller and smaller to bring new challenges to the processing. Now the commonly used nozzle material and processing methods are not impeccable: for example, diamond head nozzle is not a real diamond, but a complex mixture of diamonds and metals, it is too expensive and easy to crack and broken; zirconia nozzle Expensive, but not the metal material hard, and the use of improper easy to break and lobes; PVD coated nozzle in the coating process to withstand a considerable heat, the need for strict cleaning process, especially when the nozzle is a small hole, Improper coating can cause clogging holes; tool steel is not only difficult to process and  expensive.

In fact, the nozzle needs a high wear-resistant part of the nozzle and the nozzle is only the end of the contact, the use of easy processing and low cost of materials, the end of the surface treatment is to solve the nozzle of the important ideas, and application materials and Processing methods and testing methods is the key technology; now use this way the nozzle products have come out.

This nozzle is made of aluminum alloy as the nozzle base, in the end of an electrophoretic ceramic molding technology used for surface treatment and made, as shown in Figure d. Electrophoretic Forming uses ceramic oxidized particles to charge in the electric field to form a higher dense layer. Since this layer is a tightly packed structure, this method can form low-defective ceramics on complex surfaces. Electrophoretic ceramic molding patented technology in a few minutes in the processing of aluminum alloy nozzle tip to produce more than ten microns thick ceramic uniform deposition layer, and good combination with the aluminum alloy.

This kind of aluminum alloy ceramic nozzle through the scanning electron microscopy microstructure inspection and a variety of performance testing, that is a very cost-effective products, in the wear resistance, surface quality, anti-blocking, color and nozzle life are To achieve a satisfactory level, and in the actual test, the simulation completed 3 million times after contact, with the scanning electron microscope to observe the nozzle did not find significant wear and damage; in the middle of the production plant for more than 18 months The test shows excellent performance and no failure occurs.

The following figure is a comparison of several different material nozzle .