Why is it necessary to grind the edges of glass before entering the glass tempering furnace? Introduction to the function and method of glass edge grinding

Glass is widely used in daily use, and there are many types. Among them, tempered glass is one of the more commonly used types of glass, which has high strength and durability. Generally, glass tempering furnaces are used for production. However, glass needs to be ground before entering the glass tempering furnace for production, so why do we do this? We will introduce the function and method of glass edge grinding to you here.

1. The role of glass edging

1.1. Improve yield

The edge grinding of glass before entering the tempering furnace for tempering is to improve the yield of glass tempering, because during the early cutting of glass, some very small cracks will be left around. Although it is not easy to detect with the naked eye, if it is not processed and sent to the tempering furnace for tempering, it will lead to edge collapse and fracture. The main purpose of edge grinding on glass is to improve its appearance and aesthetics, as well as to increase the yield of glass during the tempering process.

1.2. To avoid affecting production progress

During the heating and cooling process of ungrounded glass, cracks and defects at the edges of the glass can cause furnace explosions under various or uneven stress effects, causing significant damage to equipment and even resulting in casualties. There are some small glass slag around the ungrounded glass, which is difficult to detect with the naked eye. During the operation of the tempering furnace, these glass slag will fall onto the roller path due to swinging or the blowing of cooling air, and stick to the surface of the glass, causing pitting on the tempered glass products produced by tempering. This will also pose a threat to the roller path of the glass tempering furnace, and in severe cases, the furnace needs to be shut down for treatment, which will have an impact on the entire production schedule.

2. The method of glass edge grinding

2.1. First, use diamond edge grinding with metal binder for wheel grinding, and then use coarse, medium, and fine three types in sequence. At this point, it is only a rough repair, and the occurrence of edge collapse is relatively normal.

2.2. Afterwards, a diamond grinding wheel with resin binder is used to grind the edges into a sanding surface without any chipping. Generally speaking, the grinding can be used at this stage.

2.3. If you want to polish the edges of the glass to be as smooth as a mirror, you need to use polishing wheels instead of diamonds. You can use low hardness polishing abrasives such as iron oxide.

2.4. There is a dedicated glass edging machine that has installed all the necessary wheels. The glass is pushed in from one side, passed through all the wheels one by one, and when it comes out from the other side of the machine, it is already polished like a mirror.

Grinding the edges of glass before entering the tempering furnace can improve the yield of glass tempering, accelerate production progress, and reduce the occurrence of furnace explosions. The above introduction to the role and methods of glass grinding is hoped to be helpful to you. Luoyang Yuegao Glass Technology Co., Ltd. produces various models of glass tempering furnaces. If you would like to learn more related information, please feel free to leave us a message for consultation.