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Dongguan Guilai New Material Technology Co., Ltd
Address： 5th Floor, Building B1, Songhu Zhigu Research Center, No. 6 Minfu Road, Liaobu Town, Dongguan City, Guangdong Province
Tel：0769-85389385
Fax：0769-85411416
E-mail：sales@tungson.hk
Can you separate the positive and negative terminals of SMT peripheral devices?
On all electrical appliances, there are positive and negative poles, and SMT peripheral equipment is no exception. We know that SMT peripheral equipment is used on PCB substrate production lines, limited to surface mount use. Therefore, it is crucial to distinguish its positive and negative poles. Let's take a look at how its positive and negative poles are divided?
Can you briefly introduce the current development situation and main products?
Dongshun was founded in 1996 and is headquartered at the foot of Lianhua Mountain in Chang'an Town, Dongguan, which is beautiful and full of vitality. It is a high-tech private enterprise that integrates independent research and development, manufacturing, and sales of automation equipment and electronic production manufacturing. Its subsidiaries include Dongguan Jinshun Digital Technology Co., Ltd. and Dongguan Dongshun Automation Co., Ltd. Dongshun people are hardworking, intelligent, pioneering, and enterprising, leading the electronics industry to a new level
What are the functions of your company's OCM special-shaped component plugin machine? If it is convenient, fast, and efficient to solve problems for customers, what are the specific aspects?
As is well known, existing SMT, AI and other equipment are limited to surface mount and tape insertion of electronic components, and cannot effectively solve the automated production of irregular electronic components such as bulk, tube mounted, and disk mounted. At present, even at the stage of manual insertion, production efficiency and quality are greatly restricted. Our company's independently developed and manufactured 0CM-II has the following structural and functional characteristics:
Under the current market situation, the competition in the electronic automation pasting/inserting equipment industry is very fierce. Why does your company need to develop an OCM multifunctional opposite sex plug-in machine?
Dongshun has been committed to the electronic manufacturing industry for nearly 20 years, constantly accumulating and summarizing production experience, exploring solutions to improve and enhance production efficiency. OCM is the crystallization of the wisdom and diligence of Dongshun people.
Nowadays, with the rapid development and growth of the company, it has a good reputation and comprehensive services in the industry. May I ask what kind of business philosophy your company has achieved?
The saying 'customer is God' may sound exaggerated, but in the hearts of the people of Dongshun, they always put customer needs first, take it as their responsibility to solve problems for customers, and contribute to the production of their products. When establishing cooperation, we will always listen to the needs of users and respond quickly, providing technical support to customers with full enthusiasm and thoughtful service. Only by considering customers with care,
When customers choose products, they tend to pay more attention to service. What thoughtful services does your company provide to customers? What are the characteristics of these services?
We always put service and product quality first in our business. Our service philosophy is that customers are gods, and we take solving customer problems as our responsibility. Our goal is to provide customers with the most cost-effective products. From the beginning of sales, we provide customers with one-stop services, including sound and caring pre-sales, in sales, and after-sales services. In terms of after-sales service, we have a comprehensive service system to ensure that we can solve problems for customers in a timely manner. We have established a very comprehensive after-sales service assessment system, which, combined with humanized management, maximizes the value of our services for customers.
Could you please talk about your plans and expectations for the future development of the company?
Dongshun OCM-II was born in the context of the rapidly developing information industry and is a fresh blood of emerging industrial manufacturing. It has a strong social industrial foundation for its development and growth. The hardworking and intelligent Dongshun people, with their wisdom and sweat, have nurtured newborns who are constantly growing. Its rise has filled the gap that AI, SMT and other equipment cannot solve, opening a new page for the full automation of electronic production lines. Dongshun OCM is committed to pursuing high-quality products and services that are universal, fast and stable. We firmly believe that with continuous efforts, we will be the future strong players in this industry.
What should be noted when selecting SMT surface mount machines?
What should be noted when selecting a surface mount machine? With the rapid development of surface mount technology, the application of surface mount machines in China's electronic assembly industry is becoming increasingly widespread. Faced with numerous models of surface mount machines, selecting the right one is still a complex and difficult task. When selecting a surface mount machine, several key technical issues should be noted.
Are voids in SMT solder joints a problem?
The IPC Solder Product Value Association (SPVC) conducted a reliability study to determine whether the performance of various tin silver copper (SAC) alloys in lead-free alloys is equivalent in assembly, metallographic analysis and basic characteristics, thermal shock and temperature cycling. The conclusion of SPVC is that the performance of the three SAC alloys is not significantly different, and it is recommended to use SAC 305 as the preferred lead-free alloy in the electronics industry. Another result of this study is that when analyzing test boards using SAC lead-free solder paste, voids were detected. The cavity was marked on the test circuit board, but it was not repaired. In this case, the test circuit board was subjected to thermal shock and temperature cycling. The voids have also undergone thermal shock and temperature cycling, and SPVC also compares the voids in the solder joints.
14 principles of SMT zero defects
1. The principle of full inspection: All parts and products must undergo full inspection. 2. The principle of in-process inspection: Quality is manufactured, so inspections must be carried out within the process.
SMT process solution for small factories
1、 Suggestions for SMT production process in small factories 1. Suggested component assembly method: 1) Single sided solder paste welding: Explanation: Single sided welding and double-sided welding are basically the same in the production process So the selection of processes, equipment configuration, and personnel ranking are basically the same In actual production operations, the A-side is welded first, and then the same process is repeated. The settings of the tin printing process and reflow soldering machine are adjusted relatively to weld the B-side.
How to determine what is a good reflow soldering process?
The cooling section in the reflow soldering process plays an important role, where the lead tin powder in the solder paste has melted and fully wetted the connected surface. Cooling should be carried out as quickly as possible to obtain bright solder joints with good shape and low contact angle. Slow cooling can cause more decomposition of the circuit board into the tin, resulting in gray and rough solder joints. In extreme cases, it can cause poor soldering and weaken the bonding strength of solder joints. The cooling rate of the cooling section is generally 3-10 ℃/s, and cooling to 75 ℃ is sufficient.
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