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Hitachi LMG6911RPBC-E

# LMG6911RPBC-E Hitachi LMG6911RPBC-E New LMG6911RPBC KOE 5.7 inch LCM 320×240 6:1 Monochrome CCFL Parallel Data, LMG6911RPBC-E pictures, LMG6911RPBC-E price, #LMG6911RPBC-E supplier ------------------------------------------------------------------- Email: sales@shunlongwei.com https://www.slw-ele.com/lmg6911rpbc-e.html ------------------------------------------------------------------- Panel Brand:  HITACHI Panel Model : LMG6911RPBC   Panel Size : 5.7 inch Panel Type STN- LCD , LCM  Resolution: 320×240 , Q VGA   Pixel Format Rectangle Display Area: 115.17(W)×86.37(H) mm Bezel Opening 122.0(W)×90.0(H) mm Outline Size 167.1(W)×109(H) mm Brightness - Contrast Ratio 6:1 (Typ.) (TM)     Viewing Angle - Display Mode STN, Blue mode (Negative), Transmissive  IP

How to prevent deformation during slow wire processing

 Slow-moving wire processing is a very exquisite and exquisite craft, and sufficient preparations need to be made, so that the processed products can be more quality. The slow-moving wire processing technology has a wide range of applications and is a must in our industries. If you want to do better with less technology, you must master all aspects of the processing knowledge. For example, the most common thing is the deformation during processing.  How can we solve it How to prevent deformation during slow wire processing Speaking of slow wire processing, it uses continuously moving fine metal wires as electrodes. Pulse spark discharge is performed on the workpiece, where it generates a high temperature above 6000 degrees. Moreover, if it wants to improve its quality problems and prevent its deformation, it can firstly start from the following aspects. 1. To prevent deformation, it is impossible for the material to have no internal stress. In particular, the internal stress of the que

KOVAR parts seal preparation and physical properties

Kovar® is a vacuum-melted iron-nickel-cobalt low-expansion alloy. The chemical composition content is controlled in a very narrow range to ensure accurate and balanced thermal expansion performance. At the same time, strict quality control during the manufacturing process of KOVAR machining parts also ensures balance Its physical and mechanical properties are more suitable for deep drawing, stamping and various cutting processes. Material use Kovar® is used for vacuum sealing of hard glass and ceramics, and is widely used in electron tubes, microwave tubes, transistors and diodes. On integrated circuits, it is used for flat integrated circuits and dual in-line packages. Seal preparation All parts made by Kovar® should be degassed and annealed in a wet hydrogen atmosphere. Hydrogen is injected into water at room temperature and gets wet through blisters. Care must be taken to prevent surface carbonization. The heat treatment furnace must have a cooling chamber that provides the same a

Die casting mold stress

During the use of die-casting mold, the die-casting mold will have stress. So what is the reason for this situation? Let's take a look at the causes of stress in the lower die-casting mold.

1. Mold opening: In the process of core pulling and mold opening, when some components are deformed, mechanical stress will also be generated.

2. Mold temperature: the mold should be preheated to a certain temperature before production, otherwise, chilling will occur when the high temperature molten metal is filled, which will cause the temperature gradient of the inner and outer layers of the mold to increase, forming thermal stress, and cracking or even cracking on the mold surface . In the production process, the mold temperature continues to rise. When the mold temperature is overheated, it is easy to stick to the mold, and the moving parts fail to cause damage to the mold surface. A cooling temperature control system should be installed to keep the mold working temperature within a certain range.

3. Filling: The molten metal is filled with high pressure and high speed, which will inevitably produce fierce impact and erosion on the mold, thus generating mechanical stress and thermal stress. During the impact process, molten metal, impurities, and gas will also produce complex chemical interactions with the surface of the mold, and accelerate the generation of corrosion and cracks. When molten metal is encased in gas, it will expand first in the low-pressure area in the cavity. When the gas pressure increases, inward blasting occurs, pulling out the metal particles on the surface of the cavity and causing damage, and cracks due to cavitation.

4. Production process: In the production process of each die-casting part, due to the heat exchange between the mold and the molten metal, the surface of the mold produces periodic temperature changes, causing periodic thermal expansion and contraction, and generating periodic thermal stress. For example, the surface of the mold is subjected to compressive stress due to the temperature rise during pouring, and after the mold is opened to eject the casting, the surface of the mold is subjected to tensile stress due to the temperature drop. When this alternating stress is repeatedly cycled, the stress accumulated inside the mold becomes larger and larger. When the stress exceeds the fatigue limit of the material, cracks occur on the surface of the mold.

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