When the valve has noise, the reason is that the traffic exceeds the rated standard, and the flow should be adjusted appropriately; when the oil pump is noisy, the reason and its corresponding solutions are also many. In order to increase the oil temperature; when there is bubbles in the oil, the air in the system should be released.

1. Increased metal processing volume in the middle frame: 3D glass shell mobile phones have high requirements for metal strength. The 6,7 series aluminum alloy can barely meet, but more tendency to tend to stainless steel, stainless steel processing difficulty, working hours will increase;

2. Increased CNC processing graphite mold: 3D glass hyperbolic screen screen. It is not cost -effective to use CNC processing, long working hours, and low efficiency. At present, the hot bending machine is basically used. The hot bending of the glass requires more graphite furnace molds, so some CNC capacity will turn from metal processing to graphite mold processing;

3. CNC processing metal to the glass of the glass: In order to fit the screen and the mobile phone, 3D glass needs to be finely processed, so some CNC will turn to the glass of the glass.