The first process of Investment Casting production is the manufacture of investment mold, investment mold is used to form the cavity in the refractory shell model, so in order to obtain the casting with high dimensional accuracy and surface finish, the investment mold itself should have high dimensional accuracy and surface finish. In addition, the performance of the melt itself should also make the subsequent shell making process as simple as possible. In order to obtain the above high quality requirements of the investment die, in addition to good pressure (pressing the investment die), but also must choose the appropriate mold material (referred to as the mold) and reasonable mold making process.
The advantage of the investment casting method is that it can cast complex castings of various alloys, especially high temperature alloy castings. For example, the blade of jet engine, its streamlined outer profile and cooling inner cavity, with machining process almost impossible to form. Investment casting process can not only achieve mass production, ensure the consistency of castings, but also avoid the stress concentration of residual blade lines after machining.
The biggest advantage of investment casting is that because investment casting has a very high dimensional accuracy and surface finish, so it can reduce the machining work, just leave a little machining allowance in the parts requiring higher parts, and even some castings only leave grinding and polishing allowance, without mechanical processing can be used. It can be seen that the investment casting method can greatly save machine tools, processing time and metal raw materials.
silica soil casting parts, Precise dimension Tianhui Machine Co.,Ltd , https://www.thcastings.com
More beautiful than iPhone X! BOE OLED Liu Haiping exposure
Although the Apple iPhone X faced criticism following the launch of "Liu Haiping," there's no denying that, given current technological constraints, Liu Haiping might currently be the best option for balancing screen sharing and user experience. Most OLED screens in today’s smartphones come from Samsung, so next year’s flagship devices are likely to have a very similar front design—after all, they’ll be using Samsung’s components. However, there's some positive news: besides Samsung, domestic screen manufacturers are also pushing forward with Liu Haiping, and BOE has already made significant progress in this area.
BOE recently showcased an impressive 6.18-inch OLED screen that uses the same COP (Chip on Plastic) technology as the iPhone X, resulting in a nearly bezel-free display with only a small notch. The screen features a 2K resolution of 2992 x 1440, a PPI of 537, and a brightness level of 390 nits. This performance is quite competitive and shows great potential for future high-end smartphones.
From the images, it's clear that the screen offers excellent brightness and color saturation. If BOE can successfully mass-produce this screen next year, we can expect many high-end domestic smartphones to adopt it. While Samsung's AMOLED panels remain the gold standard, their prices are often prohibitively high. This gives BOE a real opportunity to capture market share, especially among budget-conscious brands looking for quality alternatives.
Looking ahead, it's possible that several domestic manufacturers will start using this screen in their upcoming flagship models. Some second-tier brands may even compete for Samsung's Liu Haiping panels, while BOE’s version could find its way into mid-range devices. This development could significantly change the smartphone landscape, offering more options and potentially lowering costs for consumers.
In summary, BOE’s progress in OLED technology marks an important step forward for the Chinese mobile industry. With continued innovation and mass production capabilities, the future looks bright for Liu Haiping and other domestic alternatives.