Steel Shot

QB-25, QB -20, QB -17, QB -14 , QB -12 , QB -10, QB -8 QB -6,QB -5, QB -4, QB -3, QB-2.

Steel grit

QG-17,QG -14,QG -12,QG -10,QG -7,QG -4,QG -3,QG -2.

wire-cut shots

0.3mm,0.4mm,0.6mm,0.8mm,1.0mm,1.2mm,1.5mm,1.7mm, 2.0mm, 2.5mm

Stainless steel shot

0.3mm,0.4mm,0.6mm,0.8mm,1.0mm,1.2mm,1.5mm,1.7mm, 2.0mm

Stainless steel cut wire shot

0.3mm,0.4mm,0.6mm,0.8mm,1.0mm,1.2mm,1.5mm,1.7mm, 2.0mm

Material selection standard

Proper hardness Hardness for shots should be 5-10HRC higher than shot blasted material

Enough density. Min. Density:7.4g/cm3

Proper microstructure tempered martensite, tempered troostite+random carbon residue

Shot blasted material condition

high quality low cost

high speed environment protection

Relation Between Hardness And Blasting Effect:

Relation Between Hardness And Resilience:

Quality standard for steel shot and steel grit

steel shot:QB-25, QB -20, QB -17, QB -14 , QB -12 , QB -10, QB -8 QB -6,QB -5, QB -4, QB -3, QB-2.

Steel grit:QG-17,QG -14,QG -12,QG -10,QG -7,QG -4,QG -3,QG -2.

Owen life:2000-2800times

Chemical:C:0.80-1.2％ Mn:0.6-1.2％ Si:＞0.40％

S＜0.05％ P:＜0.05％

hardness:Normal:40-50HRC (377-509HV)

Special:52-56 HRC (543-620HV)

Special:56-60 HRC (620-713HV)

We can produce the special hardness products as per the requirement of customer

Hardness tolerance:±3.0 HRC

Proper microstructure tempered martensite, tempered troostite+random carbon residue

Our standard:National standard GB/T18838.3-2008 carbon steel shot and grit

American Society of Automotive Engineers “SAE J827”carbon steel shot standard

American Cast steel association "SFS20-66 Steel Abrasive standard"

People's Republic of China black metallurgy profession "YB / T5159- steel balls,"

the US military standard "ML-S-851 cleaning and metal reinforcing steel shot and grit standard "

ISO11124-3 standard high carbon steel shot grit

Characteristic for steel shot and grit

High cleaning speed

QB Shot, QG Grit has the appropriate hardness, high cleaning speed, good rebound, and it can clean inside-corner or complex shape products. In that case, it can reduce processing time, increase capacity, improve production efficiency and save energy ,reduce manufacturing cost.

long lasting and less consumption.

QB Shot, QG Grit has less internal defects. Its microstructure of tempered martensite, tempered troostite + dispersed carbide, with High impact resistance, long life. And it can reduce the load of dust collector.

with the effect of stress release and increase the strength.

QB Shot has impact internal organization, and not easily broken. It is equally located, to release the stress, and improve the surface hardness,

strict quality management

Manufacturing process strictly enforce the IS09001: 2008 international quality system standards, with strict technology control. QC department enforce 24hour tracking monitoring for manufacturing process. All products date can be traceable.

Relation between density and worklife

Hardness is proportional to blasting speed but inverse proportional to worklife. Higher hardness, faster blasting speed, but shorter life with larger consumption. Proper hardness (approx. HRC40-50) will have the most economical efficiency. The proper hardness have good rebound resilience and will clean the corners fully and reduce the working period.

Inner flaws such as air-cavity, fissure and porosity affect the worklife of abrasive and increase consumption.

Density larger than 7.4g/cc has minimum inner defects.

Steel shot and grit selection standard

Consumption factor

Equipment adjustment(blasting angle, distance, work piece location, air volume of dust collector, adjustment for separator)

Blasting speed

residual volume or corrosion grade, workpiece hardness

Cleanness grade requirement

arc height requirement and deforming requirement of the workpiece.

steel shot quality

Reference table for shots size as per workpiece surface roughness

Inspect the shot storage inside of the shot blasting machine, and add in time, and the total adding amount should be less than 10% of the inside storage volume to ensure the stable ratio

stainless steel shot

chemical analysis

size::0.2-2.5mm

chemical analysis:3.4 austenitic type::

(C)＜0.25％, (Cr)=16-18％, (Ni)=6-10％, (Si)＜1％, (Mn)＜2％

430 Ferrite:(C)＜0.25％,(Cr)=16-18％,(Si)＜1％,

(Mn)＜1％

410 martensitic:(C)＜0.25％,(Cr)=11-13％,(Si)＜1％,

(Mn)＜1％

Microhardness:3.8-509HV ,32-50HRC

Owen life:6500times

microstructure :304:ustenitic type,430:Ferrite,410:martensitic. Density.:7.8g/cm³

steel shot catalogue

steel grit catalogue

Chemical laboratory equipment / workshop production equipment