Steel grit

 

 

ZW Steel grits has been divided into three groups of different hardness according to their intended purpose.The hardest material GH, is designed for use exclusively in air blasting equipment. The two softer materials, GL and GP, may also be used in centrifugal wheel blast equipment.

 

Steel Grit Hardness Selection:

 

GP steel grit :

 

The GP steel grit external form is round and shape, even GP steel grits are softer than GL and GH,but owns fine elasticity and the strength of fatigue resistance as a result of fine heat treatment, so GP steel grit applied in all aspects .

 

 

GL steel grit :

 

The GL steel grit is harder than GP steel grit, but during blasting ,GL steel grit also loses its sharp edges, GL steel grit is particularly suited to descaling, operations before coating and surface preparation applications.

 

GH steel grit :

 

The GH steel grit has maximum hardness, it will not lost their angular during operating. These abrasives are particularly effective in surface treatment processes and produce a uniform surface,  GH steel grit used for surface cleaning of high hardness products and surface roughening operations effectively .

 

Application Scope

 

 

Surface preparation for painting and coating ,derusting of metal surface ,removal of old coatings from steel structural, cleaning of castings and forgings,cleaning of welded areas,cleaning the squeezing roller,cleaning the scales, rust, burr, painting or plating before treatment,etching ,etc.

 

Large grits used for sand removal of large and medium sized castings,scale removal of forging and heat treatment pieces,steel plate surface blast cleaning,cutting granite,etc; Small grits used for sand removal of medium and small sized casting ,forging and heat treatment pieces,aluminum ,steel pieces,steel plates ,steel structure and cleaning of non ferrous castings.

 

Cast steel grit

 

ZW Cast Steel Grit is an angular metallic abrasive produced by crushing specially heat treated  steel shot. Our Steel Grit has features of optimum mechanical characteristics, good tenacity,

fatigue resistance,impact resistance,high wear resistance long working-life,low

consumption,etc;Mainly used for metal surface descaling, coating removing,surface pre-treatment before coating,etc.

 

Item    Name	Cast steel grit
Chemical Composition	Carbon (C)		0.85-1.20%
	Manganese (Mn)		0.60-1.20%
	Silicon (Si)		0.50-1.20%
	Sulfur (S)		≤0.05%
	Phosphorus (P)		≤0.05%
Hardness	GP	GL		GH
	40-50HRC	53-60HRC		60-66HRC
Microstructure	Fine and Homogeneous Tempered Martensite	Fine and Homogeneous Tempered Martensite		Fine and Homogeneous Tempered Martensite
Appearance	angular
Density	≥7.4 g/cm3