The basic requirements for the quality of etching is the ability to resist layer in addition to all of the following except copper layer removed completely clean, stop and nothing more. Strictly speaking, if you want to precisely define, then etching quality consistency must include conductor width and lateral extent of corrosion. Inherent characteristics of the etching solution due to the current, but only down to the left and right direction of the etching action generated, so the side etching is almost inevitable.Read More
Thursday, August 15, 2013 9:44:29 AM Asia/Shanghai
Thursday, August 15, 2013 9:38:05 AM Asia/Shanghai
The role of high-speed combustion: Determination of iron and steel by combustion of carbon, sulfur is a commonly used method, the general use of uniform horizontal tube furnace for combustion of the sample in oxygen. Analysis of the samples will be installed into the high temperature porcelain boat in the ceramic tube furnace at high temperature, preheat combustion in oxygen after one minute, a complete combustion of the sample to be 2 to 3 minutes. Creation of the initial speed analysis, the sample to accelerate the burning speed, switch to vertical tube furnace, the sample directly into the ceramic tube bottomed upstanding combustion in oxygen, such as eliminating the need for improved porcelain boat, it does not warm up , make the analysis a little bit faster. Later, our analysis of workers pioneered the electric arc furnace, the furnace combustion of this "unique", it is the steel samples, fluxes, additives together into copper crucible, sealed in oxygen, the use of high-frequency arc ignition, ignition of the sample in an oxygen rich state. This particular way of burning the complete combustion of the sample time is shortened to a few seconds, various combustion furnaces is the fastest and most complete combustion of the sample manipulation of the device. Using electric arc furnaces, the steel carbon and sulfur determination seconds of easy reach. Now, the electric arc furnace combustion - conductance method can be 40 to 50 seconds quoted in steel carbon and sulfur determinations.Read More
Thursday, August 15, 2013 9:33:44 AM Asia/Shanghai
Two drilling machines Semi-closed solution using DMC1842PCI bus 4-axis motion control card numbers, of which two axes for X, Y table movement control, the other two axes are used to control two drilling heads feed motion. DMC1842 can be connected with the servo motor constitute semi-closed loop control can also be connected with stepper motors in open loop manner, or any combination of both. So for less demanding accuracy and speed of the two drilling heads feed stepper motor driver can be used to reduce overall costs. Board has 32 high-speed processor, Flash, RAM, relying on its own hardware and software form a closed loop, multi-axis positioning, contour, interpolation control, do not take the time host, with the host via a 32-bit PCI bus exchange information and data (communication ).Read More
Thursday, August 15, 2013 9:26:50 AM Asia/Shanghai
Introduce common electroplating intermediatesRead More
Thursday, August 15, 2013 9:24:05 AM Asia/Shanghai
First, the purpose, "the guide book provides PCB Dry Film production content of the work station and steps.Read More
Tuesday, August 13, 2013 4:29:25 PM Asia/Shanghai
Foxconn OEM Apple is likely to release in the second half of iPhone6, concept map also shows that this phone is the use of non-frame design and aluminum carbon fiber shell, the entire weight of the body 40% lighter than the iPhone5.Read More
Tuesday, August 13, 2013 4:25:38 PM Asia/Shanghai
August 9, 2013, Illinois Bannockburn-IPC-Association Connecting Electronics Industries International recently released a PCB manufacturing market and business annual report - "North American PCB industry analysis and forecast 2012-2013" report display, PCB manufacturing in North America is expected to return to moderate growth in late 2013 and will continue into 2016, the global PCB industry as well.Read More
Monday, August 12, 2013 2:50:11 PM Asia/Shanghai
Positive transformation in the production as well as small and medium-size panel touch-based Caijing (6116) ten-year operating performance for the expansion of the touch panel business, announcements to 331 million yuan of funds invested enterprises and to Xin (3049) purchase and obtain production machinery and equipment group of about 103 units.
Monday, August 12, 2013 2:46:40 PM Asia/Shanghai
Listed PCB factory photoelectric mill Hutch Tripod Technology (3044-TW and Zhichao Technology (8213) 2013 first half earnings have been released, the first half of 2013 Tripod Technology exceeded 200 billion in revenue reached 20.229 billion yuan NT (the same below), after-tax profit 1.148 billion yuan, after-tax earnings per share was 2.18 yuan; while Zhichao Technology 2013 9.88 billion yuan in the first half, earnings per share 2.11 yuan.
Monday, August 12, 2013 2:43:20 PM Asia/Shanghai
Beijing time on August 12 news, the U.S. technology blog BusinessInsider Thursday published a signed as Steve Kavak (Steve Kovach) analysis of the article said that with the continuous development of the smart phone market, the new smart phones more and more, but the product of one another more and more imagination, "marvel" of elements is less and less, since the first generation Apple iPhone, it seems no longer a revolutionary smart phone products appear similar to "smart phone" concept has ceased to exist.