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New Equipment | Cleaning Equipment
Aqueous ultrasonic online pcb board brush cleaning wash machine cleaner china price Features: 1. A comprehensive cleaning system: the surface of the product residues of organic matter, inorganic substances for thorough and effective cl
Industry News | 2012-05-30 18:23:07.0
IPC Midwest Conference & Exhibition™ will highlight advances in assembly materials, assembly processes and reliability testing to help electronics companies address critical challenges in manufacturing defect-free, quality electronics
Industry News | 2018-10-18 09:29:21.0
Wave soldering welding interview direct contact with high temperature liquid in the production
Industry News | 2018-10-18 09:27:40.0
Time Temperature setting wave soldering is the most important in the solder melts
Technical Library | 2021-09-29 13:35:21.0
In PCB circuit assemblies the trend is moving to more SMD components with finer pitch connections. The majority of the assemblies still have a small amount of through hole (THT) components. Some of them can't withstand high reflow temperatures, while others are there because of their mechanical robustness. In automotive applications these THT components are also present. Many products for cars, including steering units, radio and navigation, and air compressors also use THT technology to connect board-to-board, PCB's to metal shields or housings out of plastic or even aluminium. This is not a simple 2D plain soldering technology, as it requires handling, efficient thermal heating and handling of heavy (up to 10 kg) parts. Soldering technology becomes more 3D where connections have to be made on different levels. For this technology robots using solder wire fail because of the spattering of the flux in the wires and the long cycle time. In wave soldering using pallets the wave height is limited and pin in paste reflow is only a 2D application with space limitations. Selective soldering using dedicated plates with nozzles on the solder area is the preferred way to make these connections. All joints can be soldered in one dip resulting in short cycle times. Additional soldering on a small select nozzle can make the system even more flexible. The soldering can only be successful when there is enough thermal heat in the assembly before the solder touches the board. A forced convection preheat is a must for many applications to bring enough heat into the metal and board materials. The challenge in a dip soldering process is to get a sufficient hole fill without bridging and minimize the number of solder balls. A new cover was designed to improve the nitrogen environment. Reducing oxygen levels benefits the wetting, but increases the risk for solder balling. Previous investigations showed that solder balling can be minimized by selecting proper materials for solder resist and flux.
New Equipment | Wave Soldering
DIP Insertion Line wave soldering machine N250 DIP Insertion Line wave soldering machine DIP Line wave soldering machine DIP wave soldering machine Insertion Line wave soldering machine Weight: 700KG Dimensions: 2600(L)*1200(W)*1600(H)
Industry News | 2019-12-16 22:45:13.0
Vacuum soldering system is a kind of process welding furnace for high-end products, such as laser devices, aerospace, electric cars and other industries, compared to the traditional chain furnace, has great technical advantages.
Industry News | 2017-03-14 11:17:45.0
The premier of the SEHO Technology Days in Guadalajara and Queretaro, two major Mexican centers of electronics production, was a tremendous success. In cooperation with STE Latino America, SEHO – a worldwide leading manufacturer of complete solutions for soldering processes and automated production lines – held two rounds of seminars, attended by a great number of users, mainly from the automotive sector. STE Latino America is an expert partner for electronics productions in Mexico with extensive, long-term experience in the relevant processes and SEHO systems engineering.
Industry News | 2014-01-29 14:26:14.0
AIM Solder announces the appointment of Andrés Rojas to the position of Technical Support Engineer. Based out of Monterrey, Mexico, Andrés will assist in finding technical solutions for AIM customers within the Northeastern regions of Mexico.
Technical Library | 2019-07-02 23:02:05.0
The introduction of lead-free solders resulted in a selection of different chemistries for solder pastes. The higher melting points of lead-free alloys required thermal heat resistant rosin systems and activators that are active at elevated temperatures. As a result, more frequent maintenance of the filtration systems is required and machine downtime is increased.Last year a different method of cleaning reflow ovens was introduced. Instead of cooling down the process gasses to condensate the residues, a catalyst was used to maintain the clean oven. Catalytic thermal oxidation of residues in the nitrogen atmosphere resulted in cleaner heating zones. The residues were transformed into carbon dioxide. This remaining small amount of char was collected in the catalyst. In air ovens the catalyst was not seen as a beneficial option because the air extracted out of the oven was immediately exhausted into the environment. When a catalyst is used in an air environment there is not only the carbon dioxide residues, but also water. When a catalyst is used in an air reflow oven the question is where the water is going to. Will it condensate in the process part of the oven or is the gas temperature high enough to keep it out of the process area? A major benefit of using a catalyst to clean the air before it is exhausted into the environment is that the air pollution is reduced dramatically. This will make environmental engineers happy and result in less pollution of our nature. Apart from this, the exhaust tubes remain clean which reduces the maintenance of air ovens.This paper will give more detailed information of catalyst systems during development and performance in production lines.
