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What are the advantages of CNC machining of radiator parts?

For friends who have been in contact with the radiator component industry, they often see or hear "CNC machining", but too much exposure does not necessarily mean that many people understand. In fact, many questions are still about CNC machining. What are the advantages? Let's take a closer look. CNC machining is an index-controlled machine tool machining, which is a method of using digital information to control the machining process. Traditional mechanical processing is done manually by machine tools. During processing, the mechanical cutter is shaken to cut metal, and the accuracy is measured with calipers and other tools. However, traditional artificial intelligence processing is far from being able to meet the needs of production development. Therefore, the emergence of CNC machining provides the possibility for the standardization, precision and efficiency of mechanical product processing. The CNC machining process in the radiator component industry also shines. The

Investment Casting Materials and Manufacturing Process

Mold material The performance of the molding material should not only ensure the convenient production of investment molds with accurate dimensions and high surface finish, good strength and light weight, but also create conditions for the manufacture of mold shells and good castings. Molding materials are generally formulated with waxes, natural resins and plastics (synthetic resins). All mold materials mainly prepared with wax materials are called wax-based mold materials, and their melting point is low, 60~70 ° C; all mold materials mainly prepared with natural resins are called resin-based mold materials, with a slightly higher melting point, about 70 °C. ~120℃.   Precision Investment Castings China prototype company service include :  High Quality Investment Casting Parts Custom , Lost Wax Investment Casting Sand Casting , Lost Foam Casting , Gravity Casting , Die Casting , Graphite Casting , Casting Moldsmanufacturers . Manufacture of Folding Investments In t

알루미늄 합금 다이캐스팅의 단점을 해결하는 것이 편리합니다!

알루미늄 합금 다이캐스팅은 현재 현재의 전자제품 , 자동차 , 생활필수품 등 많은 산업과 분야에서 널리 사용되고 있습니다 . 그러나 알루미늄 합금 다이캐스팅에서 자주 발생하는 몇 가지 결함 및 해결 방법은 다음과 같습니다 .   알루미늄 합금 다이캐스팅   1. 불순물   알루미늄 합금 다이 캐스팅의 불순물 문제는 주로 특정 온도에서 알루미늄 , 규소 및 다량의 철 , 망간 , 크롬 및 기타 화합물을 포함하는 결정립과 일부 산화물로 구성됩니다 .   해결책 : 알루미늄 잉곳의 조성을 엄격하게 제어하고 , 제련로의 난로를 정기적으로 청소하고 , 정기적으로 슬래그를 처리하면 문제를 해결할 수 있습니다 .   2. 구강 문제   다공성은 다이캐스팅 부품의 내부 또는 표면에 나타나는 다양한 크기의 구멍을 말하며 , 이는 다이캐스팅 부품의 경도 부족으로 이어져 표면의 외관에 영향을 줍니다 .   Solution: 적절한 정제제를 사용하여 모공을 처리하고 , 공정을 조정하고 , 저속을 적절하게 줄이고 , 이형제가 너무 많이 분사되어 모공 문제가 해결되지 않는지 확인하십시오 .   3. 균열 문제   균열은 알루미늄 합금 다이캐스팅의 매트릭스가 파괴되고 , 외력의 작용에 따라 확장되는 경향이 있는 선형 또는 기타 라인인 기다란 틈이 형성되는 것을 의미합니다 .   솔루션 : 합금 조성을 올바르게 제어하고 , 냉각수 회로를 늘리고 , 알루미늄 합금 다이캐스팅의 구조를 변경하고 , 사출 위치를 변경하거나 증가시키면 해결할 수 있습니다 . PINJIN 서비스에는 다음이 포함됩니다 . 알루미늄 다이캐스팅 , 아연 다이캐스팅 , 마그네슘 다이캐스팅 , 투자 주조 , 모

Basic knowledge of LCD.

The liquid crystal display is a passive display. It cannot emit light and can only use the light of the surrounding environment. It only needs a small amount of energy to display patterns or characters. It is precisely because of low power consumption and miniaturization that LCD becomes a better display method. The liquid crystal material used in liquid crystal display is an organic substance with both liquid and solid properties. Its rod-like structure is generally arranged in parallel in the liquid crystal cell, but its arrangement direction can be changed under the action of an electric field. For positive TN-LCD, when no voltage is applied to the electrodes, the LCD is in the "OFF" state, and the light energy passes through the LCD to be in a white state; when voltage is applied to the electrodes, the LCD is in the "ON" state, and the liquid crystal molecules are in the long axis direction. Arranged along the direction of the electric field, the light cannot pass through the LCD and is black. By selectively applying voltage on the electrodes, different patterns can be displayed. For STN-LCD, the twist angle of the liquid crystal is larger, so the contrast is better and the viewing angle is wider. STN-LCD is based on the principle of birefringence to display, its primary color is generally yellow-green, and the font is blue, which becomes a yellow-green mode. When using a purple polarizer, the base color will change to gray and become a gray mold. When using a polarizer with a compensation film, the primary color will become close to white. At this time, the STN becomes the black and white mode, which is FSTN, and the polarizers of the above three modes are turned 90°, that is, the blue mode, and the effect will be better.
2. The structure of the liquid crystal display device
The liquid crystal display is a liquid crystal box made of two pieces of conductive glass on the top and bottom. The box is filled with liquid crystal and sealed with a sealing material-a plastic frame (usually epoxy resin). Polarizers are attached to the two outsides of the box. The interval between the upper and lower glass sheets in the liquid crystal cell, which is commonly referred to as the cell thickness, is generally several microns (the diameter of human accuracy is tens of microns). The inner side of the upper and lower glass sheets, corresponding to the display pattern, is plated with a transparent tin oxide-tin oxide (ITO for short) conductive film, which is the display electrode. The main function of the electrode is to allow external electrical signals to be applied to the liquid crystal through it. The entire display area inside the glass sheet in the liquid crystal cell is covered with an alignment layer. The function of the alignment layer is to align the liquid crystal molecules in a specific direction. The alignment layer is usually a thin layer of high molecular weight organic matter and has been rubbed. It can also be prepared by vacuum evaporation of a silicon oxide film on the glass surface at a certain angle. The TN type liquid crystal display is filled with positive nematic liquid crystals. The orientation of the liquid crystal molecules is to make the long rod-shaped liquid crystal molecules arranged in a fixed direction parallel to the glass surface, and the direction of the long axis of the molecules is along the direction of the orientation treatment. The orientation directions of the upper and lower glass surfaces are perpendicular to each other, so that in the direction perpendicular to the surface of the glass sheet, the orientation of the liquid crystal molecules in the cell is gradually distorted, from the upper glass sheet to the lower glass sheet by 90° (see the figure below). This is the origin of the name of the twisted nematic liquid crystal display.
In fact, the liquid crystal molecules close to the glass surface are not completely equal to the glass surface, but form a certain angle with it. This angle is called the pretilt angle, which is generally 1°~2°. The two outer sides of the glass sheet in the liquid crystal cell are respectively covered with polarizers. The polarization axes of the two polarizers are parallel to each other (normally black type with white characters on a black background) or orthogonal to each other (normally white type with black characters on a white background), and And the orientation direction of the liquid crystal cell surface is parallel or perpendicular to each other. Polarizers are generally processed by polymer plastic films under certain technological conditions.
What we usually see is a reverse-type liquid crystal display, which still has a reflective sheet behind the polarizer on the bottom. In this way, the incident and observation of light are on the same side of the liquid crystal cell.
TN, HTN, STN structure: FSTN, ECB-Multi-colorSTN structure:  ColorSTN structure:
Third, the basic performance of liquid crystal display devices
Electro-optical performance: the curve of LCD optical transmittance with voltage,
Response speed: how fast or slow the transmittance changes after the LCD is applied with voltage,
Contrast ratio: The ratio of the transmittance of the LCD in the selected state and the non-selected state.
Viewing angle graph: The iso-contrast curve graph obtained by observing the LCD under different viewing angles.
Temperature performance: Since the physical properties of the liquid crystal material itself change with the temperature, it leads to
LCD threshold, transmission spectrum, etc. will drift with temperature.
Frequency response: LCD can only work in a proper frequency range, too low will cause the display to flicker too high
The liquid crystal molecules cannot keep up with changes in the electric field.
LCD power consumption: refers to the current density per unit display area.
·Industrial products guarantee 100,000 hours. ·The civilian goods are guaranteed for 50000 hours.
Other properties: anti-ultraviolet, anti-glare, anti-scratch, etc.

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