According to the Ministry of Commerce, the EU will implement a directive on August 13 this year, which stipulates that the costs associated with the collection, treatment, recycling and environmental protection of products put on the market will be borne by manufacturers or importers. Some experts believe that producers will pay hundreds of millions more for this.
缅甸环球国际app下载 Wang Wenyuan, president of Formosa Plastics, declared that Formosa Plastics Group will increase the layout of the electronics industry and find the next growth momentum. The South Asian board of directors, which relies on the electronics industry, will once again decide to reinstate the surplus. The mainland will become a fiberglass of 16.5 million US dollars. The mainland has built the world's largest electronic grade fiberglass kiln with an annual production capacity of more than 4 to 50,000 metric tons!
The 9th China International Machine Tool Exhibition will be held from October 9th to 13th at the China International Exhibition Center and the New China International Exhibition Center. It is reported that the scale of the exhibition will reach 150,000 square meters, with more than 2,000 exhibitors and nearly 200,000 visitors. Compared with the 75,000 square meters of the previous exhibition, it has almost doubled, and the highlights of the exhibition are endless.
South Asia Plastics is expected to reduce the price of thick plate CCL (copper foil substrate), with an average reduction of about 10%. It is pointed out that the price reduction is mainly considered in the market conditions of the downstream PCB industry during the peak season is not as expected! However, Wu Jiazhao, the general manager of South Asia, said that the signing of the case has not yet been sent to him, so there is no information on the plan.
Yesterday, the National Information Center Economic Forecasting Department’s Macro Policy Trends Group released a report entitled “Promoting the Reform of Resource Product Price Formation Mechanism”, saying that China’s economic growth rate has been falling for three consecutive quarters. China is energy on the one hand. Large countries with resource needs, on the other hand, indirectly act as major energy exporters. The export of "two high and one capital" products is actually exporting energy resources in disguise, and should "improve the resource tax rate and mineral resources compensation fees for important resource products as soon as possible, and implement energy tax as soon as possible."
缅甸环球国际app下载 The dust of the "two rooms" (Fannimi and Freddie Mac) has not yet settled. Lehman Brothers filed for bankruptcy and created a new shock wave; Merrill Lynch has just hid under the Bank of America, and AIG has been taken over by the US government... To make matters worse, people don't know how many such financial giants on Wall Street are already ill. If the "elephant" of the US financial market falls down, the consequences are undoubtedly disastrous.
In 2006, electronic products will fully implement lead-free soldering, which raises a new topic for research and development and medium-volume production. SMT is constantly updated to meet the growing trend of thinning, miniaturization and high precision in the electronics field. ???? In the field of microelectronics production in the 1960s, a new English character of SMT appeared in our field of vision. Its Chinese meaning is surface mount technology. It involves a number of disciplines such as PCB substrate, electronic components, circuit design and assembly process. It is an emerging science and technology. This technology can be said to have a lot to do in scientific research and production.
Despite the controversy over the technological need for lead-free soldering, consumer and legislature requirements for lead-free products are clear。 The main disadvantage of lead-free solders is the higher cost than traditional tin-lead solders, but whether you like it or not, it is clear that manufacturers have to use lead-free processes in all of their production。 After all, the way to reduce costs is always there。 ? ???? Despite the appearance of surface mount components, wave soldering developed specifically to handle through-hole components remains alive and a key part of any production line。
Founded in 1994, Shenzhen Weida Electronic Equipment Co。, Ltd。 is a large-scale professional R&D, production and sales of various lead-free wave soldering and reflow soldering companies。 It is also the oldest and most comprehensive and authoritative wave soldering and reflow soldering manufacturing company。 One of the companies。
This article is the general manager of Shenzhen Osman Lighting Technology Co., Ltd. ????Entrepreneurship is my dream. After working for a few years and having savings on hand, I intend to put my dreams into practice, so the impulse to open a factory has finally become an action. After several investigations, planning, and site selection, after two years of anxiety and expectation, the factory was finally built.
With the continuous development of electronic technology, surface mount technology (SMT) is becoming more and more widely used. Weida's large-scale production line equipment is dedicated to the popularity of this technology and contributes to China's electronic technology. Moreover, Weida's top-size large lead-free computer hot air nitrogen reflow soldering machine has just accepted BYD's bulk order.
缅甸环球国际app下载 Wave soldering and reflow soldering are two common soldering methods。 Let's talk about the difference between wave soldering and reflow soldering。 ???? Sticker。 Surface mount technology, referred to as SMT, has penetrated into various fields as a new generation of electronic assembly technology。 SMT products have the advantages of compact structure, small size, vibration resistance, impact resistance, high frequency characteristics and high production efficiency。 SMT has taken a leading position in the board assembly process。
On May 23, 2011, Mr。 Baqow Bilal, a Pakistani customer, visited our company。 The purpose of the visit is to further understand the company and conduct on-the-spot investigations on the company's production technology and capacity to strengthen cooperation with the company in Pakistan。 Zhao Shengjun, the general manager of the company, warmly received the customers and exchanged detailed information on the sales and use of the products in the country。 Subsequently, Mr。 Baqow Bila visited the company's production site to understand the company's reflow and wave soldering production processes。 At the same time, he also praised the company's production status, production capacity, product quality and technical level。
The electronic equipment industry has developed rapidly. In a few short years, there are hundreds of electronic equipment manufacturers with a certain scale. With the continuous improvement of equipment requirements in the electronics industry, many enterprises have great opportunities for development space. Faced with the challenges of fierce competition from the industry and more stringent customer requirements. Under such a market situation, Shenzhen Weida Electronic Equipment Co., Ltd., a professional manufacturer of wave soldering, reflow soldering and assembly lines in China, is responding with a positive attitude.
As the brand promotion and technology exhibition exhibition of the largest and most influential electronic production equipment and electronic manufacturing technology in China, Huanan International Electronic Production Equipment and Microelectronics Industry Exhibition will be held every year at Shenzhen Convention and Exhibition Center. It is also one of the highlights of Weidaco (VTA) after the continuous NEPCON Shanghai exhibition and NEPCON Chengdu exhibition.
The reflow process is the most important soldering process in current surface mount technology. It has been widely used in many industries including mobile phones, computers, automotive electronics, control circuits, communications, and LED lighting. More and more electronic original devices have been converted from through-holes to surface mounts, and reflow soldering has replaced the wave soldering in a considerable range. This has become a clear trend in the soldering industry.
In the wave soldering process, preheating volatilizes the solvent in the flux, which reduces gas generation during soldering. Preheating is a very important system. Understanding its principles and standardizing operations is extremely meaningful for improving the quality of welding. The rosin and active agent in the flux begin to decompose and activate, which can remove the oxide film and other contaminants on the printed circuit board pads, component terminals and lead surfaces, and protect the metal surface from reoxidation.
The placement machine is a high-precision industrial loading and unloading device. It is a part of many important equipment. Its positioning system is the main indicator for evaluating the accuracy of the placement machine. It is driven by the AC servo motor and is commanded by the sensor and control system. Accurate positioning is achieved, so the accuracy of the sensor plays a key role. The displacement sensor has a circular encoder, a magnetic scale and a grating scale. The placement machine is plated with bright and dark radial chrome lines. The adjacent light-dark spacing is called a grid. The total number of square-sections is the number of line pulses of the encoder.
There are many classifications of reflow soldering in our life。 The benchtop reflow oven benchtop equipment is suitable for small and medium-sized PCB assembly production, with stable performance and economical price (about RMB 4-8 million)。 It is used by domestic private enterprises and some state-owned enterprises。 More。 Vertical reflow ovens There are many models for vertical backup, which are suitable for PCB assembly and production of users with different needs。 The equipment has high, medium and low grades, and the performance is also different, and the price is also high (about 800-800,000 RMB)。 Reflow soldering domestic research institutes, foreign companies, and well-known enterprises use more。 Imported heating parts, uniform temperature, high compensation efficiency, reflow soldering suitable for CSP, BGA component welding;
With the maturity of reflow soldering technology and the improvement of the grades of products produced by domestic EMS manufacturers, wave soldering equipment is still very promising. At present, due to the imperfection of reflow soldering technology and process, the defects of selective reflow soldering are still quite a few. In this paper, selective reflow is taken as an example to introduce and analyze selective soldering from two aspects of equipment and process.