Grinding wheels abrasive selection

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Grinding wheels abrasive selection

:yinglong :2017-12-02 09:29:11

name

code

Characteristic

Application scope

Diamond

High strength,

good heat resistance,

cutting sharp,high

grinding efficiency,

grinding process is not

easy to heat and block,

thermal expansion of

small

Suitable for grinding hard and brittle

materials and hard alloy.

For the ordinary abrasive difficult to

process the low iron content of metal

and non-metallic hard and brittle

materials, such as hard alloy, high

alumina porcelain, optical glass, agate

gem, semiconductor materials, stone

and so on.

Cubic

boron

nitride

CBN

Superhard materials, high

thermal stability and

chemical inertness ofiron

metal and its alloys,

suitable for precision

grinding, grinding,

polishing and

ultra-finishing

Cubic boron nitride (CBN) is second

only to diamond. It has many excellent

properties of diamond.

Applicable to resin, metal, ceramics

and other binder system, can also be

used to produce loose abrasive,

inding paste.

Corundum

Brown, high hardness,

toughness, the price is

relatively low

Suitable for grinding high tensile

strength of metal materials, such as

carbon steel, alloy steel, malleable cast

iron, hard bronze, etc.

White corundum

Was white, hardness

higher than corundum,

toughness than brown

corundum low, easy to

break, Sharp edges

Suitable for grinding hardened steel,

alloy steel, high

carbon steel,

high speed steel

And processing thread and thin-walled

pieces and so on

Chrome corundum

Rose red or purple,

toughness is higher than

white Corundum,

high efficiency, After

processing the surface

roughness is low

Suitable for cutting tools such as tools,

gauges, instruments, threads and other

low roughness surfaces

Single crystal corundum

Light yellow or white,

single grain spherical

crystal, strength and

toughness than brown,

white corundum high,

with a good multi-angle

cutting edge, Good cutting

capacity

Suitable for grinding stainless steel,

high vanadium steel,

high speed steel and other high hard, high toughness

materials and easy deformation, burn

the workpiece, but also for high-speed

grinding low roughness grinding

Microcrystalline corundum

Sepia, abrasive by many

tiny crystals Composition,

oughness, high strength,

Self-sharpening

performance is good

Suitable for grinding stainless steel,

bearing steel, special ductile iron and

other more difficult grinding materials,

but also for forming grinding, cutting

into the grinding, high-speed grinding

and mirror grinding and other finishing

Green silicon carbide

Green, hardness and

brittleness are higher than

black silicon carbide, good

thermal conductivity,

Sharp edges,

self-sharpening

performance

Mainly used for carbide cutting tools

and workpieces, threaded and other

tools of fine grinding, suitable for

processing gemstones, jade, watches

and clocks, precious stones and

precious metals, semiconductor

cutting, grinding and grinding of free

abrasive

Black silicon carbide

Black, Shiny, High

hardness, but the brittle,

good thermal conductivity,

Sharp edges,

Self-sharpening is better

than corundum

Suitable for grinding cast iron, brass,

lead, zinc and other tensile strength of

the lower metal materials, but also for

processing all types of non-metallic

materials, such as rubber, plastics,

minerals, refractory materials and

heat-sensitive materials

Abrasive Selection Considerations

● The nature of the material being processed should be taken into account. High tensile strength of the material, should use the toughness of the abrasive; low hardness, elongation of large materials, should use more brittle abrasive; high hardness materials should be selected high hardness of the abrasive.

● should pay attention to the use of materials difficult to produce chemical reaction of the abrasive, in order to reduce the consumption of abrasive.

● abrasive in the processing process, will encounter different media, in a certain temperature range, will be eroded, resulting in chemical reactions and even complete decomposition. Therefore, it must be noted when the abrasive is selected.