Diamond Micropowders

 

Gringing micropowders for extra-hard materials

  1. diamond powders for polishing,
  2. diamond micropowders
  3. precision diamond micropowders,
  4. oval diamond micropowders,
  5. diamond powders special classification,
  6. non-magnetic diamond powders,
  7. cubic boron nitride grinding powders,
  8. coverage powders,

Synthetic diamond powders produced according to GOST 9206-80 standard are intended for the production grinding tools and the essential ingredient of suspensions and polishing pastes.

Diamond powder is a mixture of different sizes and forms of diamond grains in the form of single crystals and their fragments, adhesions and polycrystal.

Depending on the size of grains and how they receive diamond powders are divided into:

  1. grinding powder – grain size from 2500/2000 to 40 microns,
  2. micropowders – grain size from 60 up to 1 micron,
  3. submicron powders – grains size from 1 up to 0.1 micron and smaller

Characteristic feature of the diamond powder is its composition, or percentage of the basic fraction (the so-called matrix) and the largest and the smallest grains. This figure is given in%, except that in the case of powder grinding as it relates to weight the various factions, for micropowders- quantity of grains.

In Table 1 and Table 2 presents the characteristics and distribution of grain size fractions.

Table 1:

Type of diamond powder Grain size The largest grains, not more than [%] Basic grains, no less than [%] Ultra fine grains, not more than [%]
AS2 160/125-125/100 12 80 2
100/80 12 75 2
80/63-63/50 13 75 2
50/40 15 75 2
AS4 200/160-160/125 12 80 2
100/80 12 75 2
80/63-63/50 13 75 2
50/40 15 75 2
AS6 250/200 10 80 2
200/160-125/100 12 80 2
100/80 12 75 2
80/63-63/50 13 75 2
50/40 15 75 2
AS15 315/250-250/200 10 80 2
200/160-125/100 12 80 2
100/80 12 75 2
80/63-63/50 13 75 2
50/40 15 75 2
ARW1 2500/2000-1000/800 8 90 2
800/630/250/200 10 80 2
200/160-125/100 12 80 2
100/80 12 80 2
80/63-63/50 13 75 2
50/40 15 75 2
ASM 60/40-2/1 2 85 5
ASN 1/0 2 95 5

Table 2:

Diamond powder type Characteristic Granularity Application
AS2 Made of synthetic diamond with high tensile stress, grain in teams with highly developed surface 160/125-50/40 Tools of the organic binder used for the accurate processing of sintered carbide and steel
AS4 Made of synthetic diamond grains in teams and adhesion 200/160-50/40 Tools of the organic binder used in the treatment of sintered carbide, ceramics and other brittle materials
AS6 Made from the debris and adhesion of synthetic diamond grains 250/200-50/40 Tools of the metallic binder, working under the increased loads
AS15 Made of synthetic diamond grains, debris and adhesions 315/250-50/40 Tools of the binder metal working under severe conditions
ARW1 Made of synthetic polycrystalline grains obtained in the process of crushing the diamond-type “Wallas” 2500/2000-50/40 Tools used for machining glass, grinding titanium alloys, iron pretreatment
ASM Made of synthetic diamond grains on the normal capacity of abrasive 60/40-1/0 Polishing details and appliances of hardened steel, alloys, ceramics, glass, semiconductors and other materials
ASN Made of synthetic diamonds c grain fraction content increased with increased capacity abrasive 60/40-1/0 Initial and final polishing of hard and very tough, hard-material, alumina, ceramics, diamond, gemstones