1) Cold-Press Mode: This mode is to first press the working layer (containing diamonds) and the transition layer (not containing diamonds) of the diamond segments to their forms directly on the grinding wheel’s body, and let the segments connect with the wheel’s body via teeth, slots or other manners. Then, put the grinding wheels into sintering furnaces to sinter without press.

2) Semi-Hot-Press Mode: This mode is an improved version of the cold-press mode. When the diamond grinding wheels are being sintered in the furnace, appropriate molds will be applied and some pressure will be added, but the pressure is much lower than the one in the hot-press mode.