How to Set the Splitting Pressure of Glass Cutting and Splitting Equipment More Reasonably?

2025-11-06 17:01:31

In the era of high-precision manufacturing, glass has become an indispensable material in industries like electronics, consumer tech, and new energy. From smartphone screens to new energy battery insulation boards, the demand for precise glass cutting and splitting is soaring. Glass Cutting and Splitting Equipment plays a key role here, and one of the most critical factors affecting its performance is the setting of splitting pressure. Too high pressure may crack the glass unnecessarily, while too low pressure fails to split it completely. Let’s explore its application industries, scenarios, and how to set the pressure properly, along with common questions.

The consumer electronics industry is the biggest user of glass cutting and splitting equipment. For smartphone and tablet screens, the equipment first cuts the large glass sheets into small pieces according to the product size, then splits them precisely. For example, when processing 0.5mm-thick OLED glass screens, the splitting pressure needs to be controlled precisely. If the pressure is set too high (over 0.8MPa), the fragile OLED glass may develop micro-cracks that affect the screen’s display effect; if it’s too low (below 0.4MPa), the glass won’t split along the pre-cut lines, leading to material waste. In the production of smartwatch glass covers, which are even thinner (0.3mm), the pressure needs to be adjusted to an even more precise range (0.3–0.5MPa) to ensure the integrity of the glass surface.

In the new energy industry, the equipment is mainly used for processing battery insulation glass sheets and solar panel glass. Battery insulation glass sheets require high splitting accuracy to ensure they fit perfectly with other battery components. When processing 1.2mm-thick battery insulation glass, the splitting pressure is usually set between 1.0–1.2MPa. This pressure range can split the glass neatly without damaging the internal structure of the glass, which is crucial for preventing battery short circuits. For solar panel glass, which is thicker (2–3mm), the splitting pressure needs to be increased to 1.5–2.0MPa to ensure smooth splitting, as thicker glass requires more force to break along the cut lines.

In the electronics industry, the equipment is applied to the processing of glass substrates for integrated circuits and PCB insulation glass. Integrated circuit glass substrates have strict requirements for flatness after splitting. If the splitting pressure is uneven or improper, the glass substrate may be warped, affecting the subsequent installation of electronic components. For 0.8mm-thick integrated circuit glass substrates, the splitting pressure is set at 0.6–0.8MPa, and the pressure distribution must be uniform to ensure the flatness of the split glass within ±0.01mm.

First, consider the glass thickness. Generally, the thicker the glass, the higher the splitting pressure needed. But this isn’t an absolute rule—different types of glass (like soda-lime glass and borosilicate glass) have different hardnesses. Borosilicate glass, which is harder, requires slightly higher pressure than soda-lime glass of the same thickness. Second, refer to the pre-cut depth. If the pre-cut is deeper, the splitting pressure can be lower, and vice versa. Third, conduct a small-batch test before formal production. Take 5–10 pieces of glass of the same specification, set different pressure values, test the splitting effect, and select the pressure that results in the neatest split and no damage to the glass.

A: Yes, definitely. Different glass types have different physical properties. For example, when switching from soda-lime glass (used in ordinary smartphone screens) to borosilicate glass (used in high-temperature-resistant electronic components), even if the thickness is the same, the splitting pressure needs to be increased by about 0.2–0.3MPa because borosilicate glass is harder.

A: You can observe the splitting effect. If the glass splits neatly along the pre-cut line, with no micro-cracks or uneven edges, the pressure is proper. If there are splinters or the glass breaks randomly, the pressure is too high. If the glass doesn’t split completely or needs extra force, the pressure is too low.

A: It does, but the impact is small. In low-temperature environments (below 10℃), glass becomes slightly more brittle, so the splitting pressure can be reduced by 0.1–0.2MPa. In high-temperature environments (above 30℃), glass is slightly softer, and the pressure can be increased by 0.1MPa to ensure smooth splitting.

Some high-tech equipment manufacturers focus on developing high-precision glass cutting and splitting equipment, ensuring stable performance and easy pressure adjustment to meet diverse industry needs. Their efforts help manufacturers improve production efficiency and product quality.