PCB News - Comparison of smt factory machine pasting and manual welding

Comparison of smt factory machine pasting and manual welding
Which is better for smt PCB factory machine sticking or manual welding? At present, manual welding is restricted by factors such as welders, welding process quality, welding accessories cost and welding efficiency. What are the advantages of SMT machine stickers? Below, the smt factory will talk about the PCB comparison between machine stickers and manual welding.

The current bottleneck status and restrictive factors of manual welding:

1. Welders. As we all know, on the one hand, welding requires the welder to have proficient operating skills, rich practical experience, and a stable welding level; on the other hand, welding is a work with poor working conditions, a lot of smoke and dust, large heat radiation, and high risk. . Baiqiancheng smt factory said that welding is different from other industrial processes. During manual welding, experienced welders can adjust the position, posture and walking speed of the welding gun in a timely manner according to the actual weld position observed by the eyes. Adapting to changes in solder joints and welding trajectories, therefore, the job of a welder is a job with a certain technical content. For the factory, it is necessary to recruit a skilled welder, based on the current worker mentality and the factory’s cost accounting for employees. A situation of opposites between positive and negative is a bottleneck for manual welding.

2. Welding process quality. Baiqiancheng smt factory said that the manual welding process is limited by the welder's technological level. The welding skills and speed of welders are uneven, and emotional fluctuations are affected by certain factors. The welding quality and output of products every day are affected by it. Impact, this is the second bottleneck of manual welding

3. The cost of welding accessories. The skills and emotions of the welding workers in the smt factory are more or less unable to estimate the auxiliary materials used for welding. They can be collected from the warehouse as much as they are used. The administrator cannot quantify the daily use of welding auxiliary materials, which means that the cost of welding auxiliary materials is fuzzy The concept of the production cost is not quantified. It is an unexplainable item for customers and their own costs. This is the third bottleneck of manual welding.

4. Welding efficiency. Affected by the skills of welders in the smt factory, the efficiency of daily product welding cannot be quantified. How many products the factory can produce every day, and whether the product quality is good or not. Under what conditions is the so-called efficiency achieved? We understand that the purpose of welding is to obtain reliable solder joints! Therefore, the welding efficiency we require should be based on the premise of ensuring reliable solder joints; that is, we are While performing high-efficiency welding, one should avoid paying the price of a higher rejection rate.

SMT machine welding:

With the mass production of electronic products, the method of manually soldering the pin solder joints on the PCB board with a soldering iron tool can no longer meet the market requirements, production efficiency and product quality. As a result, semi-automatic/automatic mass soldering equipment and fully automatic welding machines were gradually invented. Baiqiancheng smt factory said that fully automatic welding machines first appeared in Japan as the main production equipment for black and white/color TV sets. Introduced into China in the 1980s, there have been dip soldering machines, single wave soldering machines and so on. In the mid-1980s, the SMT technology of starting and inserting mixed assembly developed rapidly, and double wave soldering machines appeared again. In terms of soldering technology, these dip soldering, single-wave soldering, double-wave soldering, etc. are all flow soldering (Flow Soldering), where the molten liquid solder and the workpiece to be welded move relative to each other and make it wet to achieve soldering. Compared with manual welding technology, fully automatic flow welding technology obviously has the following advantages: save power, save manpower, improve efficiency, reduce costs, improve appearance quality and reliability, overcome human influence factors, and can complete tasks that cannot be done manually .
The automatic soldering machine is used with various tooling and fixtures, which can effectively meet your different welding requirements for the processed circuit PCB and parts.