• Add: C403, International Finance Square, No.222 Shenzhen Road, Qingdao, Shandong, China
  •  +86-532-89095761
  •  +86-532-89095767
  • Name:
  • Company Name:
  • Country:
  • Email:
  • Phone:
  • Subject:
  • Comments:
Exhitbiton

We will attend SURFEX exhibition in Poznan, Poland from Jun 4th to 7th, 2013

Read More
Home>FAQ

What is the Application of Shot Blasting Machine?
Shot Blasting Machine is a kind of Casting Equipments,which makes use of the shot blast wheel to blast high speed shots to clean or strengthen the surface of the casting parts.The Shot Blasting Machine can make sand shakeout and decoring of the casting parts at the same time.



What is the Difference Between Shot Blasting and Shot Peening?

Steel or glass shots will be sprayed on parts with compressed air to remove oxide coat and other contaminants which is known as shot peening process. The steel shots can also be sent to high-speed rotation of the disc, with centrifugal force to throw the Shot high-speed to crash parts surface, to improve the surface polisher, this process is called shot blasting. These two processes can make the parts compressive stress, and there is no silicon powder, less pollution to environment.

The main use is as follows:

(1)To part the surface compressive stress can increase their fatigue strength and tensile stress corrosion ability.

(2)Twisted thin-walled parts will be corrected.

(3)Replace the ordinary cold and hot forming process to process large thin-walled aluminum components , not only to avoid the parts surface residual tensile stress, but also for favorable compressive stress on the parts. It should be noted: the temperature of treated parts can not be too high by shot peening or shot blasting, or compressive stress at high temperatures will disappear, thus losing the desired effect. Their use temperature is related to parts material, steel parts is about 260-290℃, aluminum parts only 170℃. 



What are the Types of Shots Used In Shot Blasting Machine and Air Blasting Machine?

(1)Iron and Steel Shots

The hardness of the steel balls are generally HRC40 ~ 50, processing of hard metal, the hardness can be increased to HRC57 ~ 62. Their toughness is better, use life is several times of cast iron pills, with wide range of applications.

(2)Cast Iron Shots

The hardness of cast iron shot is HRC58 ~ 65, crisp, fragile, short life, applications is not widespread. Usually use to the place where ask high shot peening intensity.

(3)Glass Shots

The hardness is lower than the previous two kinds of shots, mainly used in stainless steel, titanium, aluminum, magnesium, and other do not allow iron contamination. Can make a second treatment after Steel shot peening to remove the iron contamination and reduce the part's surface roughness. 


What is Abrasive Blasting? 


Abrasive blasting is the operation of forcibly propelling a stream of abrasive material against a surface under high pressure to smooth a rough surface, roughen a smooth surface, shape a surface, or remove surface contaminants. A pressurized fluid, typically air, or a centrifugal wheel is used to propel the media.


How Many Types of Abrasive Blasting?

1 Wet abrasive blasting
2 Bead blasting
3 Wheel blasting
4 Hydro-blasting
5 Micro-abrasive blasting
6 Automated blasting
7 Dry ice blasting
8 Bristle Blasting



What is Wheel Blasting?

In wheel blasting, a wheel uses centrifugal force to propel the abrasive against an object. It is typically categorized as an airless blasting operation because there is no propellant (gas or liquid) used. A wheel machine is a high-power, high-efficiency blasting operation with recyclable abrasive (typically steel or stainless steel shot, cut wire, grit or similar sized pellets). Specialized wheel blast machines propel plastic abrasive in a cryogenic chamber, and is usually used for deflashing plastic and rubber components. The size of the wheel blast machine, and the number and power of the wheels vary considerably depending on the parts to be blasted as well as on the expected result and efficiency.


How Many Abrasive Blasting Media are There?

Steel Grit,Steel Shot,Garnet,Glass Bead,Plastic,Aluminium Oxide,Cut Wire,Ceramic.



Why Shotblast?

Shot Blast Cleaning: Remove rust, corrosion, combustion deposits, paint, varnish, lacquer and other contaminants

Shot Peening: Drastically improves the fatigue life to strengthen all types of metals

Etching: Angular grit will prepare a surface or substrate for metallizing, painting, bonding, or other specialized coatings

Deflashing & Deburring: Remove flash or burr, and provide an overall cosmetic finish

Descaling: Removes mill/heat-treat/weld scale, carbon deposits, slag, oxides & discoloration, and other surface deposits

Some shotblasting applications:

- Aluminum extrusion die cleaning
- Glass & rubber mold cleaning
- Cleaning, etching components before painting
- Finishing of cast light alloy wheel rims
- Cleaning, reconditioning of automobile components
- Deburring, finishing of sintered powder metal components
 -Core knockout, cleaning of ferrous and non-ferrous sand castings
- Descaling of hot forgings, & hot stampings for steel and non-ferrous alloys
- Descaling of hot-rolled profiles, tubes, or sheets before painting - Removal of refractory ceramic material from precision castings
- Cleaning of permanent low pressure and gravity dies
- Deflashing, finishing of high pressure die castings
- Deflashing of thermoset plastic and fiberglass parts
- Cleaning of brazed tools
- Shot-peening of springs and mechanical elements for fatigue life improvement