Steel Shot for Peening Machine Chinese manufacture
Loading Port:Qingdao
Payment Terms:TT OR LC
Min Order Qty:25 m.t.
Supply Capability:5000 m.t./month
Product Description:
Steel shot and 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. 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 hardnessHardness 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 speedenvironment 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 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
Workpiece Material
shots dia.
workpiece surface roughness um
Steel, stainless steel
0.3
3.2-6.3
0.5
6.3-12.5
1.0
12.5-25
2.0
25-40
3.0
50-80
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
