When the valve is noisy, the reason is that the flow rate exceeds the rated standard, and the flow rate should be adjusted appropriately; when the oil pump is noisy, the reasons and corresponding solutions are also various, such as high oil viscosity and low oil temperature. In order to raise the oil temperature; when there are air bubbles in the oil, the air in the system should be released, etc.
1. The amount of metal processing in the middle frame has increased: 3D glass case mobile phones have higher requirements for metal strength, which can barely be met by 6 and 7 series aluminum alloys, but more will tend to stainless steel, which is difficult to process and will increase the working hours;
2. The amount of graphite molds processed by CNC has increased: 3D glass hyperboloid screen, CNC processing is very uneconomical, long working hours and low efficiency. At present, hot bending machines are basically used, and the hot bending process has replaced a large part of CNC processing, while The hot bending of glass requires more graphite furnace molds, so part of the CNC production capacity will shift from metal processing to graphite mold processing;
3. CNC machining metal turns to glass edging: In order to fit the screen and mobile phone, 3D glass needs to be finished and edged, so some CNCs will turn to glass edging.
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