Surface Finishing Equipment Co.

Basni, Jodhpur, Rajasthan

The machine works on pressure blasting principle, consist of Dual (two) Blast generator cum storage tank for continuous operation. The unit have upper and lower blast generator (pressure vessel). The abrasive, after blasting is transferred to upper blast chamber. When lower blast chamber is pressurized, the mushroom valve of upper blast chamber opens to receive the abrasive and store it. After fix time interval the mushroom valve of upper blast chamber get closed and mushroom valve of lower blast chamber gets open. At this time the abrasives get transferred to lower generator, without interfering the blasting process. Hence this dual chamber machine works continuously. The blast generators is fabricated from 6mm Ms Sheet as per IS-2825 and hydraulically tested for 250 psi.

Underneath the blast generator, the specially designed pneumatically controlled grit valves is provided for independent control of blasting nozzle. The mixing tube at the bottom of grit valve mixes the abrasive with compressed air to carries the abrasive to the blasting nozzle for blasting.

A vibratory screen (operated by compressed air) has provided at the top of upper pressure chamber so that the incoming abrasive get screened for over size particles and debris before entering the upper blast chamber. Above the screen a cover is provided which have provision for connecting it to incoming line of abrasives.

The portable abrasive blaster are safe, high productivity systems designed for use with a wide range of abrasive media. The operation is performed on metals, glass, ceramics, plastic and stone.
The machine works on pressure blasting principle, consist of a blast generator. The abrasives are filled at the top of machine when machine is not working and blast generator is not pressurized. At the top, a vibrating sieve is provided to sieve the abrasive filled. The oversize abrasive and debris are retained on the screen, thus prevent the choking of blast line. When mushroom valve is opened the abrasive will get transferred to blast generator for blasting. The mushroom valve gets closed when compressed air is switched on and abrasive storage tank gets pressurized, for free fall of abrasive into the mixing tube. From mixing tube the abrasive is carried away by compressed air to the nozzle for blasting. The Blast Generator is fabricated from MS Steel plate of thickness not less than 6 mm as per IS-2825 and hydraulically tested for 250 psi.

Coke Injection Machines

Surfex Rotor type Coke Injection Machine Model S1C operates according to dry mix delivery principle. The dry mix flows from filling hopper into the continuously revolving Rotor chambers through the air chamber and finally into the compressed air stream. The air stream carries the mix to the spray nozzle (Hot gunning lance) through delivery pipe. The water is added just before the junction of hot gunning lance and delivery pipe. The rotor chambers are powered by electric motor.

The machine is recommended for hot / cold repairing of furnace, ladles, cupola, convertor, coke batteries etc.

The sequence of operation of Coke Injection Machine is as under:

1. The coke power is loaded on storage hopper 2.5 cub. meter capacity. This hopper is having electronic weighing arrangement and coke feeding valve operated by gear and VFD drive. The display unit of electronic weighing system shows the amount of coke powder fed into the coke injection machine.

2. The coke power from this hopper is transferred through this valve to the machine as per requirement / as per rate pre-decided.

3. Coke powder from machine is continuously transferred under compressed air pressure in to delivery hose pipe.

4. The delivery hose pipe is connected to coke injection lance having 4 to 5 meter length.

5. The one end of coke injection lance is trained into molten metal through appropriate bend. The coke powder is injected through this bend into molted metal gently.