There are two basic types of blasting equipment. While these systems are traditionally known as sand blasting equipment, all of these types of blasting machines can handle a variety of blast media. The blasting cabinet system is divided into tumble blasters which are a semi-automated, multi-part batch process and the traditional blasting cabinet used by an operator to blast one part at a time. Portable sand blasters come in a variety of sizes and types. The most versatile and valuable portable blasting equipment can blast all types of dry blast media without requiring changes in hardware.
The Tumble Blasters are enclosed cabinet systems that have a rotating basket with a sandblast gun aimed into it. The random tumbling action insures that all parts in the basket are completely sandblasted when the cycle is finished. The TB-1 (Mini-Blaster) is a bench top unit that can process about 1 quart of parts; the TB-2 can process 2 cubic feet of parts and the TB-3 can process 3 cubic feet of parts.
The TB-1412 and TB-2424 tumbler blasters are designed for high volume automatic tumble blasting of small parts. The large 14″ x 12″ barrel holds approximately 50 pounds of parts and turns at 6 RPM. The extra-large 24″ x 24″ barrel holds approximately 150 pounds of parts and turns at 2 RPM. Simply load the barrel, close the door, set the timer, and turn on the dust collector. The barrel slowly turns, gently exposing all parts to the blast stream. When the timer expires, parts are finished and ready for unloading!
All systems feature an automatic timer, an air pressure regulator, an air line filter, a dust collector, one sandblast gun with carbide nozzle and one blow off gun (TB-2 & TB-3 only) to remove dust from parts. The systems work with:
- Aluminum Oxide Grit (Standard)
- White Aluminum Oxide Grit
- Plastic Abrasive Grit (Urea, Melamine, Acrylic)
- Corn Cob Grit
- Walnut Shell Grit
- Glass Beads
- Pumice Grit
- Kramblast Crushed Glass Grit
- Silicon Carbide Grit
- Steel Grit
- Steel Shot
- And More
Tumble blasting systems remove rust and scale, remove hard to reach burrs, produce either bright or dull texture finishes and prepare a surface for bonding. The process is very simple: load the parts, set the timer and, at the end of the cycle, open the trap door to unload the parts, which drop onto a sloped ramp and discharge into a tote pan.
Sandblast cabinets can perform such operations as scaling and rust removal, deburring, frosting, and surface preparation for coating. Sandblasting cabinets are offered in two basic styles – standard and split-level. The standard cabinets have door openings on the side as well as a large opening in the front. The split-level style is hinged in the center; the entire top half opens to give access to the work stage, somewhat like a clamshell. This has an advantage when handling large heavy parts.
Kramer offers two basic types of blast systems. The suction machine, also known as a siphon, is most commonly used for light production and general-purpose cleanup. In this type of unit, air passes through the gun, creating a siphon action that sucks up abrasive and delivers it to the nozzle where it is propelled out to the target.
The second type of unit is a direct pressure machine. In this type of unit, the abrasive is held in a pressurized vessel and is pushed from behind, out of the nozzle and onto the target. Air is used to push the abrasive at a much higher flow rate than the suction system. Most jobs will be finished 30 to 50% faster in a pressure blaster. Pressure blasters also have the advantage of allowing much lower pressures to be used for delicate jobs.
All Kramer blasting cabinets feature either ceramic or tungsten carbide nozzles, fluorescent lighting, a pressure regulator and a door safety interlock.
Portable Blasting Systems
Portable blasting systems are available in two types – pressure fed and siphon or gravity-fed. Portable pressure blast systems (PPB Series andHDPPB Series Heavy-Duty Pressure Blasting Systems) use a pressurized pot of varying sizes to push media through a hose and out a nozzle. These systems are manufactured for industrial applications but can also be used by small shops and individuals for economical and efficient blasting of a variety of applications. Siphon-type portable blasters are typically used for small, light-duty blasting applications. These systems are generally very inexpensive but are not made to last.
A portable pressure blast system can be used to strip rust, paint, dirt, mold and other unwanted deposits of a variety of surfaces. Using portable blasting equipment to pressure blast allows abrasives to penetrate into the deepest pitted areas of a part or surface. The PPB Series of portable sandblasting equipment is ideal for body, paint and welding shops and for use in refinishing vehicles, boats, log homes, monuments, brick buildings and industrial equipment.
Portable pressure blasters come in many sizes and feature a portable tank design for ease of movement. Both the size of the pressure pot and the size of the nozzle will determine the length of continuous blasting available. The length of the blast hose can be up to 50 feet before the drop in air pressure is a factor. Lengths up to 100 feet can be managed with the appropriate air supply.
All of the portable pressure blasters offered by Kramer Industries can handle any type of dry blast media. Aggressive applications, such as heavy rust and paint stripping off large areas, may require media such as Aluminum Oxide Grit (Standard) or Kramblast Crushed Glass Grit. Moderate applications, such as auto restoration and mold removal, will demand media such as Walnut Shell Grit, Plastic Abrasive Grit or Glass Beads. On softer surfaces such as wood and log homes, the pressure blasters will work best with a media such as Corn Cob Grit.