We hold an expertise in manufacturing a wide range of Dip Soldering Machine. Our range includes Dip soldering machine, automatic DIP soldering system, integrated automatic Dip soldering system and Integrated Automatic Dip Soldering System, which is manufactured using quality material. These provide to the requirements of various industries and are offered in various technical specifications to our clients. Southern Machinery – A leading name for the quality assurance of SMT/THT Machines worldwide.
Solder Paste and Its Application in SMT.
Solder paste or solder cream is simply a suspension of fine solder particles in a flux vehicle. In electronics industry, solder paste is used in Surface Mount Technology (SMT) to solder SMDs on to the Printed Circuit board. The composition of the particles can be tailored to produce a paste of the desired melting range. Additional metals can be added to change paste compositions for specialized applications. Particle size and shape, metal content and flux type can be varied to produce pastes to varying viscosity.
Solder Paste Screen Printer.
Some of the major features to consider when selecting screen printer for solder paste are the maximum size of the circuit board that can be handled, controls of accurate screen alignment and repeat ability of print, and the board hold-down mechanism. Considerable progress has been solder paste dispenser, screening and stenciling for pastes on substrates. Each method of dispensing solder paste has its own pros and cons but the most widely used method is stenciling for both rework and large scale production. Southern Machinery is a well-known supplier of screen printing equipment.
Stencils for Solder Paste Application
There are three main ways of making stencils for solder paste:
Chemical etching
Laser cutting
Electroforming
Chemical etching is the oldest, most widely used, and least expensive option. Laser cutting and electroforming, especially the latter, find appeal in applications where precision is paramount. In addition to the type of stencil, the type of squeegee blade is very important. Metal blade squeegees are widely used because they require less maintenance than rubber squeegees.
Availability of Solder Paste
Solder paste is available in both leaded (with lead) and lead-free (with no lead) forms. It can be no-clean or water soluble. With no-clean solder paste, there is not need to clean the board after soldering. Water soluble solder paste is easily soluble in water with no harm.
