MANUAL SAND-BLASTING MACHINE

AUTOMATIC SAND-BLASTING MACHINE

STANDARD PRODUCTION ML150AU - ML300AU - ML500AU Automatics sand-blasting machine have got 150 lt., 300 lt. and 500 lt. tanks capacity. They represent the higest expression of our production as output, assurance and life. A person alone can carry out the all productive cycle. PECULIAR FEATURE TECHNOLOGY ML150AU Tank capacity 150 Lt. Maximum pressure 7,85 bar Mixer MA20 or ML32 Weight 140 Kg Content of sand 210 Kg   PECULIAR FEATURE TECHNOLOGY ML300AU Tank capacity 300 Lt. Maximum pressure 7,85 bar Mixer MA20 or ML32 Weight 200 Kg Content of sand 420 Kg   PECULIAR FEATURE TECHNOLOGY ML500AU - NEW - Tank capacity 500 Lt. Maximum pressure 7,85 bar Mixer MA20 or ML32 Weight 250 Kg Content of sand 700 Kg

AIR-SAND MIXER

GENERAL INFORMATION
The machine control can be manually or automatically operated, as requested.
In the "automatically operated" machines the starting up, stopping and adjusting are controlled by the operator through a lever control positioned at the end of the sander tube. The peculiar feature of our sand-blasting machine, is that when you release the level control, air-abrasive jet stops automatically. The machine is maintained pressurised and ready to be started up again in its optimal operating conditions (air pressure in the tank and sand flow adjustment). Therefore, after the machine is started up again it is not necessary to wait for the tank to refill or the build-up of abrasive that may have flowed in the sander tube to be removed. Therefore, our automatically operated machines are fit especially for the sand-blasting of complex parts or parts requiring frequent breaks in order to check the effectiveness of the process, since that can be done without wasting air, abrasive or time. The control device has been designed in compliance with accident prevention regulations which protect the operator from the jet in case of accident or sudden illness.
In the "manually operated" machines the stopping of the jet is controlled by a second operator who, firstly has to close the abrasive mixing valve and then the air valve. Through the reverse operation the machine is immediately started again in its optimal pressure and mixing conditions. These operations can be carried out by the operator who is sanding only if he is in the conditions to get near the machine.

MAIN TECHNICAL FEATURES
Sand-blasting operations are based on a physics principle, kinetic energy is transferred from the compressed air used to the abrasive. The larger quantity of energy is transferred to every single grain the greater is the work performed. On the basis of this principle we consider worthwhile the great efforts bestowed on the research, construction and development of the air-sand mixing device necessary for the energy transfer.

MA20AU
Mixer operating through a remote-controlled pneumatic cylinder. Sintered tungsten-carbides conical valve assembled on a 1808 stainless steel corrosion-proof rod. Sintered tungsten-carbides valve seat assembled on a shock-proof steel housing. The two parts can be coupled only after being grinded. Mixing ducts with a highly efficient section for the dynamics of fluids.

ML32AU Mixer created with the ambition to improve as much as possible the high technological features of the preceding model. Years of study, testing and change brought about a highly wear-resistant and efficient mixer. Oscillating cylindrical valve and sintered tungsten-carbides valve seats are operated by a pneumatic cylinder remotely controlled through the rotation of an eccentric shaft.

AUXILIARY EQUIPMENT

TUNGSTEN-CARBIDES NOZZLES
Sintered tungsten-carbides nozzles highly resistant to wear, provided with an external steel shock-proof housing. For large walls it is recommended the use of a "Venturi tube" nozzle provided with sections which assure the highest outcoming speed and the lowest operating costs.

TETRABOR SAND-BLASTING NOZZLES The boron carbide is, after diamond and cubic boron nitride (CBN), the hardest material available on market. The extreme hardness of TETRABOR nozzles assures the greatest resistance to wear, even with particularly hard abrasives like corundum and silicon carbide. TETRABOR nozzles are made of pure boron carbide (B4C) with no binders and consequently result extremely light (boron carbide = 2,51 g/cm3 - tungsten carbide = 15g/cm3 approx.). This material allows to maintain unaltered the optimal nozzle hole diameter as long as possible, even under extreme stress.

CONSUMPTION
FOR STANDARD NOZZLE IN m³/h

DIAMETER	EXERCISE PRESSURE (bar)
mm	6	7	8	9
5	54.60	59.94	64.74	69.12
6	78.72	86.22	93.12	99.60
7	107.10	117.30	126.72	135.54
8	139.92	153.30	165.60	177.00
9	177.12	194.04	209.52	224.04

HOOD-MASK Hood with leather front and strong fabric back. Equipped with 100x140 cm glass-holding frame with shatter-proof glass. High visibility. Supplied with air purified from oil by a special filter.

HELMET-MASK Safety mask with aluminium helmet, shatter-proof glass and strong leather jacket. Supplied with air purified from oil by a special filter.

PIPES

• Abrasion-proof sander tube set for manual and automatic control.
• Sand-blasting machine feeding pipe.
• Safety mask supply pipe.

Magni Leonildo S.r.l. is authorized reseller for:
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