Basic Properties of Diamond

April 12th, 2011

Diamond can be either natural or synthetic, and has the following basic properties:

Read the rest of this article »

Wet or Dry Diamond Core Drill Bits

December 20th, 2010

Diamond core drill bits can be either laser welded or silver brazed. Silver brazed diamond core drill bits can only be used in wet drilling. If they are used in dry drilling, their diamond segments may break off from their steel tube and may cause security issues.

Laser welded diamond core drill bits can be used in both wet drilling and dry drilling, and are now more popular. However, not all materials are suitable to be drilled dryly. If very hard materials, e.g., reinforced concrete, are drilled without water, the excessive heat generated may cause the diamonds on the core bit to become blunt, and then lead to poor drilling performance.

Read the rest of this article »

Advantages of Laser Welded Diamond Core Drill Bits

December 18th, 2010

There are mainly two kinds of diamond core drill bits: laser welded ones and silver brazed ones.

For silver brazed diamond core bits, their diamond segments are brazed onto the steel tube of the core bit with silver solder. Comparing with laser welded diamond core bits, their production technology is simpler and they are cheaper, but the bonding strength between their diamond segments and their steel tube is lower, and they cannot be used in dry drilling, because if the temperature generated in the drilling process exceeds 600°C, the silver solder may melt and then the diamond segments may fall off the steel tube. Water should always be used to cool the silver brazed core bits when drilling.

Read the rest of this article »

Features of Bronze Bond Applied in Diamond Tools

February 9th, 2010

There are many kinds of metal bonds applied in diamond tools, for example, the cemented carbide bond whose skeleton is tungsten carbide, and Fe-based bond whose composition is mainly Fe and Ni. But the most widely used metal bond is bronze.

Read the rest of this article »

Bronze Bonds Used in Diamond Tools’ Manufacture

February 2nd, 2010

The bond material used in metal-bonded diamond tools can be Cu-based alloy, Co-Ni alloy, Fe-based alloy and carbide-based alloy. Bronze bond material is a kind of Cu-based alloy, and is widely used in metal-bonded diamond tools’ manufacture.

Read the rest of this article »

The Advantages and Disadvantages of Hot Press in Diamond Tools’ Making

January 26th, 2010

In diamond tools’ manufacture, the hot press method has below advantages:

Read the rest of this article »

The Advantages and Disadvantages of Cold Press in Diamond Tools’ Making

January 19th, 2010

Cold-pressed diamond tools are much cheaper than hot-pressed diamond tools. They are still widely used in many applications. The cold press production method has some advantages:

Read the rest of this article »

3 Making Modes of Metal-Bonded Diamond Grinding Wheels

January 11th, 2010

Metal bonds are widely used in diamond grinding wheels‘ manufacture. Among these metal bonds, Cu-Sn alloy is the mainly adopted bond. There are 3 modes in the metal-bonded diamond grinding wheels’ making.

Read the rest of this article »

How to Select Diamond Cup Wheels for Concrete Grinding

December 21st, 2009

Diamond grinding has many benefits. It is fast, low-noise and low-cost. It is very popular in the construction and home improvement industry. Diamond cup wheels are the diamond grinding tool which is often used to grind concrete, stone and masonry materials.

Read the rest of this article »

Features Resin Bond Should Have When Applied in Diamond Tools

December 15th, 2009

When resin is used in diamond tools as the bond material, some approaches should be adopted to make it have below features:

Read the rest of this article »