Flame cutting glass flame cutting method
(1) Fuse cutting Fuse cutting is a method of using a gas or other heat source to cut a specified portion of the glass while partially melting it. This method has been widely used in the manufacturing process of wine glasses and the cutting of ampoules and other aspects. The flame is required to become a sharp flame by increasing oxygen, and in order to make the glass melt better, a high-calorific flame must be used.
(2) Quench-cutting Quench-cutting is rapid heating of a cylindrical glass in a narrow range along the circumference while rotating the cylindrical glass, contacting the heated portion with the cooled liquid, and cutting the glass with thermal stress. The flame used for quench cutting is a slit torch of hydrogen gas or city gas plus oxygen, and the cooling body uses an object that easily causes crack initiation, such as a grindstone, a metal circular plate, and the like. If you ensure the necessary heating time, you can cut at high speed.
(3) Burst blasting is a glass processing method that people are familiar with. When the glass is scratched with diamond or cemented carbide, and the wound is heated, the crack propagates to cut it. There are also scars added when heating, with the glass cooling, the thermal stress causes the cracks to expand and cut off. The burst can obtain the same mirror-like cut section as the fuse method.