Description: According to the test standard of solderability test, this test mainly detects whether the solderability of the chip pins is up to standard
Solderability Test picture:
Picture of solderability testing equipment:
Solderability test concept: During the assembly and welding process of electronic products, poor selection of flux quality for circuit boards, component solderable ends or solder paste will cause welding problems and directly affect the quality of products.The main welding problems include poor wetting, bridging, cracks, etc., which will increase the workload of quality control and generate a lot of maintenance, resulting in waste of manpower and financial resources, such as false welding, virtual welding and poor welding strength, etc., will directly lead to reliable sexual issues.Solderability test quantitatively evaluates the solderability of the tested samples by testing the solderability of the incoming materials, and directly provides guidance on whether the incoming materials can be put into production or can be put into production after the adjustment of the process window.For incoming batches of components, the solderability test is more meaningful for units with long storage time due to small output. Solderability evaluation can be performed on components before use to determine whether the use of this batch of components will Lead to the occurrence of welding quality problems.
Solderability test principle: Solderability test is to determine the quality of the sample according to the test results through the selection of the sample and the simulation of the welding process.In the electronics industry, solderability tests are performed by measuring the quality of the solder paste and flux used, the quality of the soldering process, etc., when evaluating the impact of mounting samples.The wetting balance (or wetting balance) test method uses a sensor to detect a small force level, combined with time to determine the strength of tin and rapid wetting.The specific sample is placed on the fixture, and the sample is immersed in the solder at a specified temperature. The force and time data are transmitted to the host computer through the sensor, and the curve and data file are formed through the software to evaluate the welding quality accurately and quantitatively.
Purpose and significance of solderability test:
1. Solderability test is generally used to make a qualitative and quantitative evaluation of the solderability of components, printed circuit boards, solder and flux, etc.In the assembly welding process of electronic products, the welding quality directly affects the quality of the whole machine.Therefore, in order to improve the welding quality, in addition to strictly controlling the process parameters, it is also necessary to conduct scientific solderability tests on printed circuit boards and electronic components.
2. Through the implementation of solderability test, help enterprises to determine the quality of solderability and product quality after production and assembly.In practical operation, it has further enriched the solderability testing techniques for components such as printed circuit boards, clarified the internal factors affecting solderability, and provided technical engineers in the manufacturing industry to improve product quality and zero-defect welding process. a great help.
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