Solder Paste: Importance of Accurate Application and Thermal Control for Optimal Soldering Results

2023-06-26 18:06:37 By : admin
Shenzhen Chengyuan Industrial Automation Equipment Co., Ltd. is the leading SMT factory solution provider in China, offering professional SMT factory building advice and service. With 20 years of experience in SMT factories, the company offers full solutions for global clients with their great advantaged sources and services.

One of the crucial components in SMT assembly is solder paste. Solder pastes come in various alloy types, flux chemistries, and particle sizes, and they are precisely and accurately stencil printed with MPM printers and dispensed in semi-liquid form with CAMALOT dispense systems. Accurate application, in terms of location and volume, is critical to forming good solder joints, as solder paste is only 50-55% metals by volume. Therefore, printing and dispensing the precise required volume of paste on fine-pitch SMT patterns is crucial to form solder joints that not only meet the task's requirements but also comply with IPC-A-610 acceptability standards.
Solder Paste | ITW EAE


To ensure optimal solder paste application for high yields and exceptional quality assemblies, MPM printers, CAMALOT dispensers, and technology innovations such as the EnclosedFlow print system and SPI Print Optimization System are utilized. These innovations help achieve precise and accurate solder paste application, resulting in reliable solder joints that meet high industry standards.

Another important aspect of the SMT assembly process is the control of thermal profiles during SMT reflow. The thermal profiles must be accurately controlled throughout the entire reflow process area to ensure stable and repeatable profiles, which ultimately lead to optimum soldering results. Vitronics Soltec and Electrovert reflow ovens are equipped with tight closed-loop control mechanisms that enable precise control over the thermal profiles. This ensures consistent and reliable solder joints, reducing the risk of defects or failure in the assembled electronic components.

In the event of misprinted solder paste on board assemblies, the removal process can be difficult and costly. However, Electrovert's Aquastorm series cleaners offer innovative features that simplify and expedite the misprint cleaning process. With features like the misprint cleaning feature, misprint cleaning becomes fast, efficient, and thorough, with minimal interruption to the overall assembly process. The Aquastorm series cleaners provide a reliable and efficient solution to rectify misprinted solder paste, ensuring that only the necessary and precise amount of solder paste is present on the board assemblies.

Shenzhen Chengyuan Industrial Automation Equipment Co., Ltd. stands out in the SMT factory solution industry for its vast experience and in-depth knowledge about SMT factories. With their professional advice and service, the company has been assisting clients globally in building efficient and effective SMT factories. Their expertise and access to advantageous sources enable them to provide comprehensive solutions tailored to the specific needs of their clients.

In conclusion, the precise and accurate application of solder paste is vital for the success of SMT assembly. Shenzhen Chengyuan Industrial Automation Equipment Co., Ltd. plays a crucial role in providing professional SMT factory solutions, including advice and services related to solder paste application, thermal profile control, and misprint cleaning. Their extensive experience and expertise position them as a leading solution provider in the industry, catering to the global market's needs.