We manufacture and export Solid Copper Earth Rods which are made from solid copper bar and are internally threaded for jointing. When deep driving a solid copper earth rod the usual practice is to insert the rod into a bore hole and backfill with eit
New Equipment | Solder Materials
KappAloy15™ - 85%Sn - 15%Zn – has a wider plastic range of 390°F - 500°F (199°C - 260°C). This makes it ideal for hand soldering Aluminum plates and parts, allowing manipulation of the parts as the solder cools. KappAloy™ Tin-Zinc solder is designe
Electronics Forum | Thu Jul 15 11:17:03 EDT 2010 | davef
Things don't disappear completely. If something caused nickel corrosion, the nickel corrosion by-product would be in place of the nickel. Is it possible that ... There never was any nickel? We know that the nickel will diffuse into the copper. Th
Electronics Forum | Fri Apr 16 11:03:35 EDT 2004 | davef
Your copper corrosion is not good. It indicates that you have not done a good job in cleaning. [We assume this is a medium green color, not unlike the color of the solder mask on your board, that is almost like a translucent lacquer; rather than th
Industry News | 2003-06-24 08:14:51.0
R/flex� 3850 laminate is produced in a range of copper and LCP thicknesses, just as the single-clad laminate, and is available in standard panel formats.
Industry News | 2017-04-11 21:32:40.0
SMTA and SMART Group announce experts from IBM Corporation and Siemens AG will keynote the Contamination, Cleaning and Coating Conference. The conference is scheduled May 22-24, 2017 at the Radisson Blu Airport Hotel in Amsterdam.
Parts & Supplies | Soldering - Wave
Overseas Agent and Distributor Wanted ! Features : Spray Fiuxer: 1) Oriental motor drives the flux spraying system. Spraying speed is adjusted according to PCB board width and moving speed to ensure even spraying all time. 2) Durable “Meiji
Technical Library | 2018-05-09 22:15:29.0
Creep corrosion on printed circuit boards (PCBs) is the corrosion of copper metallization and the spreading of the copper corrosion products across the PCB surfaces to the extent that they may electrically short circuit neighboring features on the PCB. The iNEMI technical subcommittee on creep corrosion has developed a flowers-of-sulfur (FOS) based test that is sufficiently well developed for consideration as an industry standard qualification test for creep corrosion. This paper will address the important question of how relative humidity affects creep corrosion. A creep corrosion tendency that is inversely proportional to relative humidity may allow data center administrators to eliminate creep corrosion simply by controlling the relative humidity in the data center,thus, avoiding the high cost of gas-phase filtration of gaseous contamination. The creep corrosion relative humidity dependence will be studied using a modified version of the iNEMI FOS test chamber. The design modification allows the achievement of relative humidity as low as 15% in the presence of the chlorine-releasing bleach aqueous solution. The paper will report on the dependence of creep corrosion on humidity in the 15 to 80% relative humidity range by testing ENIG (gold on electroless nickel), ImAg (immersion silver) and OSP (organic surface preservative) finished PCBs, soldered with organic acid flux.
Technical Library | 2021-04-08 00:30:49.0
As the electronic industry moves to lead-free assembly and finer-pitch circuits, widely used printed wiring board (PWB) finish, SnPb HASL, has been replaced with lead-free and coplanar PWB finishes such as OSP, ImAg, ENIG, and ImSn. While SnPb HASL offers excellent corrosion protection of the underlying copper due to its thick coating and inherent corrosion resistance, the lead-free board finishes provide reduced corrosion protection to the underlying copper due to their very thin coating. For ImAg, the coating material itself can also corrode in more aggressive environments. This is an issue for products deployed in environments with high levels of sulfur containing pollutants encountered in the current global market. In those corrosive environments, creep corrosion has been observed and led to product failures in very short service life (1-5 years). Creep corrosion failures within one year of product deployment have also been reported. This has prompted an industry-wide effort to understand creep corrosion
700 X 800 X 950mm 0.05mm Precision Hot Bar Soldering Machine Automatic Soldering Robot Equipment operation description The main parameters of the hot press equipment are temperature, time and pressure,and the three elements are controlled, and
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Other courses related to electronics manufacturing and assembly
Events Calendar | Mon Apr 23 00:00:00 EDT 2018 - Thu Apr 26 00:00:00 EDT 2018 | Shanghai, China
SMTA China East Conference 2018
Events Calendar | Tue Feb 18 00:00:00 EST 2020 - Tue Feb 18 00:00:00 EST 2020 | ,
Corrosion Testing For Electronic Equipment
(PCBs) is the corrosion of copper metallization and
SMTnet Express, March 17, 2022, Subscribers: 25,805, Companies: 11,547, Users: 27,113 Creep Corrosion On Lead-Free Printed Circuit Boards In High Sulfur Environments The material and process changes required to eliminate lead from
Imagineering, Inc. | https://www.pcbnet.com/blog/how-pcbs-are-made/
. Understanding Printed Circuit Board Basics PCBs are flat, rigid boards made from non-conductive materials like fiberglass. They are etched with copper pathways along their surfaces, which serve as connections between various electronic components within a device
| http://etasmt.com/cc?ID=te_news_industry,26961&url=_print
. It has good insulation, strong heat resistance, good corrosion resistance, and high mechanical strength, but it has disadvantages It is brittle and has poor wear resistance
