Diamond core drill bit for Sapphire Silicon Seed Crystal

Diamond Core Drill Bit for Sapphire

Diamond Core Drill Bit For Sapphire is a processing tool for obtaining seed crystals of different diameters and lengths. It is commonly used in the production of single crystal, polycrystalline silicon seed crystals, and sapphire seed crystals.

The punching size is accurate, no vibration, neat, smooth, no broken edges, wear-resistant and no edge collapse

Product

Internal Grinding Wheels

JIG Grinding Wheels

Diamond core drill bit for sapphire silicon seed crystal is a hole processing tool that extract a bar material from an inner hole by circular grinding mode. It is sintered bronze diamond drill bits with laser welded technology, which has high sharpness, long life, no tooth loss, precise drilling size, no vibration, smooth cut and no chipping.

Application:

At present, diamond core drill bit is widely used in the upstream LED industry.

Firstly, the crystal is formed in the crystal growth furnace, and then crystal rod that meets the sizes is extracted with diamond core drill bit.

Diamond core drill bit for silicon tube is mainly used for drilling monocrystalline and polycrystalline silicon tubes with inner and outer diameter dimensions and length requirements.

Diamond core drill bit for seed crystal is a processing tool to obtain seed crystals of different diameters and lengths, which is used in the production of monocrystalline, polycrystalline silicon seed crystals, and sapphire seed crystals.

Specifications of Diamond Core Drill Bit for Sapphire :

a) Specification: Diameter of 2,4,6 inches and non-standard specifications

b) Grainsize: 60-120#

c) Maximum feed rate 25mm/min (2 inches)

d) Speed 100-800r/min (depending on different diameters)

e) Processing length 6-12m (depending on different diameters)

f) Concentricity tolerance ≤ 0

High Frequency Welding vs. Laser Welding

High frequency brazing is a kind of physical bonding method of welding teeth by heating the substrate and drill teeth at high temperatures with high-frequency brazing machine using silver solder. The welding area of the drill teeth welded by high-frequency brazing usually becomes loose as the temperature of the drill bit increases. Once the temperature of the drill bit reaches the peak, the teeth will often drop.

For laser welding teeth, silver solders are not required during teeth welding. Instead, the base and the drill teeth are directly melted by the energy of the laser, forming a metallurgical bond between the base and the teeth.

Compared to the traditional high-frequency brazing, the biggest advantage of laser welding teeth is that the core drill bits are less likely to lose teeth. Especially for semiconductor materials with high hardness such as sapphire, monocrystalline silicon and polycrystalline silicon, laser welding teeth is the ideal choice.

Our diamond core drill bits are mainly used for LED and semiconductor materials, which are mostly metal sintered diamond core drill bits with laser welding technology. If high-frequency welding diamond core drill bits cannot meet the needs, we can also provide laser welded drill bits. In some cases, electroplated diamond drill bits also are used, which have high sharpness but short life. Before ordering, please offer the information such as cutting object, grain size, drill length, inner diameter, outer diameter, and connection method of the drill bits.