Application of Glass Edge Grinder in Architectural Glass

Initially, people believed that the failure of glass materials was purely brittle and did not result in plastic failure; It is believed that the scratching force and rolling of abrasive on the glass surface cause brittle conical cracks in the glass surface layer, which intersect and break into fragments, thus removing a certain thickness of glass. The mechanism of brittle failure is based on the irregular mesh structure of glass. In fact, many phenomena are difficult to explain from the perspective of brittle failure alone.

The grinding process of architectural glass usually involves grinding the edges of the glass. The process of grinding glass one· Complicated. The grinding process is divided into three stages, namely the sliding friction of abrasive particles on the glass surface, plowing, and chip formation. The three stages of the grinding process are related to the cutting thickness during grinding, where the grinding thickness of the abrasive particles is within the critical grinding thickness hmi. In the following cases, abrasive particles only produce sliding and plowing on the glass surface, without generating chips.

From the perspective of grinding mechanism of abrasive grains, there is a clear direction to improve the grinding efficiency of diamond glass grinding wheels. Currently, some people have made progress in the arrangement of spatial geometric dimensions of diamond single product abrasive grains and applied it to engineering practice. It is beneficial for reducing diamond consumption, increasing chip capacity space, uniform distribution, or reducing grinding force. On this basis, some people have successfully applied the polyhedral diamond single product to the diamond (stone) cutting saw blade by optimizing its orientation and positioning J in its layout direction (i.e., directing its sharp angle towards the most favorable cutting direction). We can expect that if these technological achievements can be transplanted to diamond glass grinding wheels, it will be very beneficial for increasing abrasive cutting, significantly reducing abrasive sliding and plowing, thereby effectively reducing grinding force, reducing friction heat, improving grinding surface quality, and improving the service life of diamond grinding wheels.

Glass straight edge grinding: There are two situations when grinding glass straight edge. A type of straight edge that requires processing to be circular (or C-shaped), Another requirement is to produce a straight edge with 45 "edges on both sides. There are also two types of processing machines. One is a linear circular edge machine, commonly with 9 or 10 grinding heads; the other is a straight edge edge machine, usually with 8 grinding heads, and the glass movement speed is 0.5 ^ -3.5m/min. There is also a certain company's straight edge machine that indicates that its machine has a processing speed of 1-8m/min, a maximum processing size of 6000mm, and a maximum processing thickness of 30mm.

Regardless of whether the straight edge is C-shaped or has 45 "edges on both sides, diamond grinding wheels are required for chamfering (grinding straight C-shaped edges also requires chamfering 45" small edges in the process). Glass straight edge grinding machines require at least four diamond grinding wheels to complete the process requirements.

Glass straight edge grinding: When grinding glass straight edge grinding, the angle of the inclined plane of the processed glass is required to be 30 ^ -450. In general, the movement speed of glass is between 0.5 and 4.2m/min. Glass straight bevel edge grinding machines have 13 grinding heads, and there are also machines that omit up to 8 grinding heads. The number of grinding heads directly affects the efficiency and surface quality of grinding.

Requirements for edge grinding of tempered glass for building doors, windows, and curtain walls: According to the industry standard JG/T455-2014 issued in September 2014, the edge processing of tempered glass for building doors, windows, and curtain walls can be chamfered or finely ground on three sides, and the width of the chamfer should not be less than 1mm; Tempered glass used for glass curtain walls and lighting roofs should be finely ground or polished on three sides, and its chamfer width should not be less than 1mm