How to ensure the quality of patch production

Suitable PCB patch welding manufacturers can not only bring high quality costs for enterprises, but also bring cost-effective returns. Therefore, in the selection of PCB patch welding manufacturers, electronics factories are very careful. So, how to choose PCB patch welding manufacturers? The following patch processing manufacturers  to tell you how to choose PCB patch manufacturers and patch production how to ensure the quality of the relevant knowledge.

1. How to ensure the quality of patch production

How to ensure Quality in SMT Patch production? In SMT patch production, solder paste printing, the operation of the patch machine and the welding of the reflow welding furnace should be listed as the key processes. Starting from the inspection method before assembly,SMT patch factory will give you some suggestions for reference: Pre-assembly inspection (incoming material inspection) inspection methods mainly include visual inspection, automatic optical inspection (AOI), X-ray inspection and ultrasonic inspection, online testing, functional testing, etc.

(1) Visual inspection refers to the method of inspecting assembly quality directly with the naked eye or with magnifying glass, microscope and other tools.

(2) Automatic optical inspection (AOI), mainly used for process inspection: solder paste printing quality inspection after printing press, paste quality inspection after mounting and post-welding inspection after reflow welding furnace. Automatic optical inspection is used to replace visual inspection: X-ray inspection and ultrasonic inspection are mainly used for welding spot inspection of BGA, CSP and Flip Chip.

(3) Online testing equipment using special isolation technology can test the resistance value of the resistor, capacitor capacitance value, inductor inductance value, polarity of the device, and short circuit (bridge), open (open) parameters, automatic diagnosis of errors and faults, and errors and faults display, print out.

(4) Function test for electrical function test and inspection of surface assembly plate. Functional test is to input electrical signals on the surface assembly board or the tested unit on the surface assembly board as a functional body, and then detect the output signals according to the design requirements of the functional body. Most functional tests have diagnostic procedures, which can identify and determine faults. But function test equipment price is more expensive. The simplest functional test is to connect the surface assembly plate to the corresponding circuit of the equipment for power up to see whether the equipment can operate normally. This method is simple and less investment, but it can not automatically diagnose the fault.

The specific method used should be determined according to the specific conditions of each unit SMT line and the assembly density of the surface assembly board. This requires electronic product manufacturers in the selection of processing manufacturers, to consider the strength of the manufacturers, choose experienced, can complete the entire processing process of the manufacturers.

2.How to choose PCB Patch manufacturer

First, good reputation of customer experience is a necessary factor for the sustainable development of PCB patch welding manufacturers. When choosing manufacturers, we must investigate the reputation of manufacturers to see whether it is reliable and trustworthy. And there are many ways to investigate, website, offline can. In addition, we should also pay attention to the relevant information of the company to see whether there is negative news, etc., which are important factors to judge whether a PCB patch welding manufacturer is reliable. In addition, if you can directly consult the manufacturer's website quotation and order, then, its credibility will increase some.

Two, the production qualification of the production qualification is reflected in many aspects, such as whether there is ISO9001 quality management system certification, whether there is the United States UL certification, whether there is the European Union ROHS related Production requirements, these are the important basis for judging its qualification. In addition, through the previous cooperation objects and cooperation cases of the factory, we can also see whether its production is qualified and high quality.

At present, the competition in the patch market is also very fierce. In order to attract customers, some PCB patch welding manufacturers will publicize with low price preferential policies. These preferential policies seem to be much cheaper on the surface, but it may be the price of quality, for enterprises, more than worth the loss. You know, high quality products bring not only the use of products, but also the reputation of customers. Moreover, the decrease in cost means that the input must be reduced in some aspects, which may reduce its quality and affect its future development. So, when a PCB patch welding manufacturer wants to attract you with a low price, be careful.

Four, strong service PCB patch welding manufacturers will provide customers with perfect service, including pre-sale, sale and after-sales, every link can let customers feel the most intimate service. Therefore, when judging whether PCB patch welding manufacturers are reliable, we can start from the service. For example, before sales, whether the reliable manufacturers have the ability to make appropriate solutions for customer needs, during sales, whether they can quickly solve the problems encountered by customers, after sales, whether they can provide timely and professional services. When customers have questions, whether the manufacturer can carefully answer and solve customers' doubts and difficulties, strengthen customer trust, whether to respond in time, to give customers strong technical support.

The above four perspectives are the important basis for selecting PCB patch welding manufacturers. In addition, product quality, technical support, value creation, etc., can be used to judge whether PCB patch welding manufacturers are worth cooperating with. Here, also remind the enterprise choice must be careful.