28

2021.06

HPC is comprised of the same materials as that of conventional cement concrete. The use of some mineral and chemical admixtures enhances the strength, durability, and workability qualities to a very high extent. The composition of HPC usually consists of the following materials: 1.Cement: Chemical and physical properties of cement can help in selecting the desired cement to produce high-performanc...

23

2021.06

The bond holds the diamond crystals in the diamond tool for the abrasive grinding process of the diamond to the slab surface. Grinding is a mutually abrasive process of the tool and the slab surface but with diamonds being extremely hard with respect to the slab surface, the wear rate of the tool is significantly less than the slab surface. The size of the diamond crystal can dictate the grinding ...

21

2021.06

Diamond grinding wheel is made by welding or cold pressing diamond blades on a metal substrate. Diamond blades are made by cold pressing and hot pressing sintering of synthetic industrial diamond and other metal powders, and then welded to the bowl-shaped metal substrate. Diamond grinding wheels are usually installed on concrete grinding machines to grind concrete, terrazzo, granite, marble and ot...

09

2021.06

PCD is made of specially treated diamond and a small amount of binder sintered under high temperature and high pressure. The disorderly arranged diamond grains make PCD have uniform, extremely high hardness and wear resistance. PCD can be used for cutting tools, grinding wheel, geological drilling, wire drawing molds, sandblasting molds, etc. The grinding process of PCD is mainly the result of the...

05

2021.06

The manufacturing process of PCD tools mainly includes two stages: ① Manufacturing of PCD composite sheet: PCD composite sheet is made of natural or synthetic diamond powder and binder (including cobalt, nickel and other metals) in a certain proportion at high temperature (1000~2000C), sintered under high pressure (50,000 to 100,000 atmospheres). During the sintering process, due to the addition o...

31

2021.05

The word “diamond” in diamond tooling is not a metaphor. Actual diamonds are built into the surface of the tooling as an abrasive. It is considered as a super-hard material and has many advantages compared to many other abrasive. Diamond are used for very specific reasons: Hardness. As most of us learned in science class, diamonds are the hardest natural substance on Earth. This means that diamond...

29

2021.05

Resin bond diamond tools use a resin bond to hold the diamonds to the tooling. The  resin of resin diamond tools is a plastic called phenol-formaldehyde resin or phenolic resin. This plastic resin is familiar to many people as the hard plastic used to make billiard balls and quartz countertops. Tools with resin diamond abrasives are made by combining powdered phenolic resin with industrial di...

24

2021.05

Metal bond diamond tools use a metal bond to hold the diamonds to the tooling. The metal is typically a mix of powdered metals that may include iron, cobalt, nickel, bronze, copper, tin, silver, or tungsten. A metal bond is formed by sintering (heating and compressing) a mixture of diamonds and metal powder. Metal bond diamond tools have different properties depending on the mixture of metals sint...