Roll-Conveyor Section Blasting Machines



A powered roller conveyor moves steel material through a blasting machine available in many sizes and configurations for common I-beams, steel plate, angles, pipe and fabricated structures.

The operation costs are very low compared to the costs of manual air nozzle blasting. It is an economical method of surface preparation before coating works.

Contact us to understand more about the costing for your project.




 



Create Surface Profile, Shot Peening, Descaling, Deflashing and Cleaning -


 



Be it new machine delivery in sales or for equipment rental, we mobilize our team to the installation site with the machine fully tested in our shop to satisfaction of a client.


 

Skew-Roll Type Pipe Blasting Machines



WEBLAST designs and manufactures many sizes of skew-roll pipe blasting machines to suit each customer production program. Pipes as small an inch diameter to pipe diameter of 3m are all part of WEBLAST production program. 


 

Skew-Roll Machine at Project Sites


 
Let me show you in a diagram how a blast wheel looks in action.
 


Some people called it a ‘turbine’ which does not describe it correctly.
 
Abrasives flow from the storage tank at a higher level, fed through an abrasive valve to a  wear resistant abrasive hose & enter this ‘blast wheel’ under free gravity fall. The blast wheel is rotating at a high speed of about 3,000rpm. The rotating blades serve like rackets imparting the abrasives in rotating speed to high velocity directed to the work piece in target.
 
The conversion of kinetic energy to propelling the high speed shots on the material surface does the cleaning; like you are using a peening hammer hitting a point on the surface. Except now, there are thousands of hits on the material surface that created the effect of cleaning.
 
Large amount of abrasives leaving the blast wheel, 2kg/sec for a 15HP unit; hence the cleaning speed is so much faster than a manual air blast gun can do only 0.2kg/sec.
 

Large Spiral Pipe Manufacturing Plant



The external surface blasting machine and the surface after blasting; no worry about the rotated marked lines left by the rollers, the finished profile is achieved.



Internal pipe blasting requires the same blast wheel to do the job in order to match near the speed of in line production works. Shown above right is a test piece result.

WEBLAST has its pipe internal blasting systems proven capable of blasting at a production speed of 1.5 m2/min with the most minimal power requirement compared to having it done by a compressed air nozzle blasting means.
 
The system requires about 1.5 tons of steel abrasives of a shot and grit combination, to run the blasting works continuously. Very low amount of abrasives needed for each run because the system is fully automatic in continuous blast recovery, abrasive cleaning and separation storage recycling.
 
The system however has its limitation in doing pipe sizes 24” and below since the smaller pipes won’t accommodate the entry of a 11kW blast wheel. We used a smaller blast wheel of 7.5kW for pipe diameter in between before we add in another adaptation with compressed air rotary nozzles for blasting of still smaller pipes.


POWERED GUIDED FLOOR BLAST MACHINE



Concrete surface and steel floor shot blasting machine is a cost-effective and environment friendly method for preparing concrete and steel surfaces. It is widely used for its easy operation and high productivity. The shot blasting machine leaves the surface immediately ready for application of coatings. 



Available Common Models
 
Blast Width 200 270 350 550
Wheel kW 7.5 11 15 2x11
C/W
> Dust Collector Unit & Hoses
> Easy to Operate Control
> Grit Consumption is Low 



Rotary Table Type Shot Blast Machine
 


The workshop friendly production cleaning tool



It is a batch production equipment, hence is not for high volume production works that need quantity & cleaning speed.




Available Sizes:

Table Diameter (m) 1.2 1.8 2.4
Works Height (m) 0.9 1.2 1.5
Blast Wheel (kW) 2x4 2x7.5 2x11



Suitable for:

> Low volume production works
> Odd size components such as steel casting, engine block & pipe fittings
> Surface cleaning and stress relieving after heat treatment process
> Complete with dust collector and control system
 
Blasting Rooms & complete supplies



An equipment development from history to the modern full floor recovery design.



Sweeper recovery system. Abrasive cleaning & air pollution free comfort - nozzle blasting
 
Abrasive Vacuum Recovery with Roots Blower Pump

What does a roots blower do? Roots blowers are used to generate constant airflows that are independent of discharge pressure conditions. Root blower applications are limited to low and medium pressure and vacuum processes and can be used to provide small to large airflow rates.

The Open University
 
Three Lobes Blower
 
PRESSURE APPLICATIONS OF ROOTS BLOWERS
 
There are many industrial pressure roots blower applications, from assisting in combustion by pumping air or gas into burners, furnaces and forges to pressurizing paper mill head boxes. The following are some major areas of application: Combustion, Drying & dehydration, Aerating & Agitating liquid, Pneumatic conveying.
VACUUM APPLICATIONS OF ROOTS BLOWERS
 
Roots blowers are frequently used as vacuum pumps. As a result, industrial vacuum roots blower applications are widespread and include the following:
  • Bottle and tube filling machines
  • Dust collecting
  • Drying
  • Garment presses
  • Industrial and commercial vacuum cleaning
  • Mechanical mat formers
  • Paper folding machinery
  • Pump priming
Vacuum:-9.8กซ-50kPa  Suction Flow:0.52 กซ183.9m3/min
 

WEBLAST manufactures abrasives recovery units with 3 lobes blower 

Model - kW m3/min kPa
VS200-22 32 20
VC200-30 32 25
VS250-55 64 39
VS250-75 61 44
VS250-90 71 49

Vacuum Recovery 22-30kw – Used for Suction of Dust on the raw material after blasting works.
Vacuum Recovery 30-55kW - Used for vacuum blasting in combination with blast pots.
Vacuum Recovery 75-90kw – Used for suction of used steel grit or used copper slag inside the tank after blasting works. Recovery Capacity is at 4-10tons per hour



The vacuum unit assembly puts in action with options to include larger storage silo, continuous auto-dumping, abrasive separation and stream line charging to blast pot machines.

Generally, the system is made up of an enclosure steel frame, vacuum pump, motor and cyclone type dust collector with sensor, cartridge type dust collector, exhaust silencer and control panel with the necessary gauges.



Garnet Recovery Dryer Separation Equipment

The Open University

Generally, one can expect a 20-25% breakdown rate at 90-110 psi at the nozzle with garnet sand of 30/60 size.
 
The recycled abrasive should be checked to ensure that the separation unit is removing both oversized coarse contaminants (typically 20 mesh or larger) and fines (typically 80-90 mesh or smaller). The abrasive discharged from the air-wash separator (into the trash/dust bin) should also be checked to determine if usable abrasive is being improperly withdrawn from the working mix. 
 
The most accurate way to determine the exact distribution of the working mix of the abrasive particles is to conduct a sieve analysis. Complete instructions and procedures on the use of test sieves are contained in ASTM STP 447, Manual on Test Sieving Methods. For a detailed sieve analysis, use #20, #30, #40, #50, #60, #70, #80, #90, #100 and #120 mesh USA Standard Sieve screens. A full set of screens is invaluable for monitoring the particle size distribution of the working mix.
 
A short-cut method used to reduce the complexity of conducting a complete sieve analysis is to select the “critical” screen for the blasting application where recycled garnet is being used. For example, to check for excessive fines in the working mix, use a single #80 or #100 mesh screen. To check for too much usable garnet being extracted by the air-wash separator, use a single #60 mesh screen. This will give a relative indication of how well the recycling process is being managed and identify any potential problems.
 

WEBLAST has practical experience with recycling in blast rooms and on field projects. We are familiar with a variety of designs for recycling equipment, as well as abrasive handling and flow issues encountered during recycling. 





Specialized 3LPP Blasting & Coating Facility

How it is done
 

on straight pipe & on long radius pipe elbow
 
3-Layer Polypropylene (3LPP) is a multilayer coating composed of three functional components; a high performance Fusion Bonded Epoxy (FBE) primer, followed by a copolymer adhesive, and an outer layer of polypropylene which provides one of the toughest, most durable pipe coating solutions available.
 
This special structure protects the material from a number of conditions and materials. The 3lpp pipeline coating is excellent in preventing the steel pipes from being in contact with corrosive chemicals and agents. Also the coating prevents the material from coming into contact with any hard surface directly and prevents physical damage as well.
 
The 3lpp coated pipe can come in different specifications such as DIN 30670, CSA Z245.21, AS 4321 and IS 3581. The coating is also resistant to cathodic disbondment, meaning the coating is not affected by electric charge which can damage most other types of coatings. The 3lpp pipe can last longer and has higher performance compared to non – coated or other types of coatings. The application of this special coating is mostly in the oil fields which operate under high temperatures. The Three Layer Polypropylene Coated Pipe can be used in abrasion prone applications such as drilling operations and in rocky surface applications.

WEBLAST design and fabricate facility for 3LPP coating of long radius pipe elbow, specifically for a national petroleum piping plant in an Asean country.



Hang up the work piece and convey it in through a blast room, oven chamber and a powder spray booth.
 
A typical long radius pipe elbow is about 8m long or less. The processes include a loading bay to hang up the work piece onto an overhead monorail conveyor system which runs in a straight line from loading to finishing unloading area.
 
The surface preparation begins with shot blasting in a modern blast room fully installed with all needed equipment to do the job in a safe and pollution free environment. 
 
The work piece with a blasted surface prepared to SA 2.5 Swedish standard and a surface profile of between 70 to 100 microns will have to be heated up in an oven chamber before the powder spraying FBE process. The temperature needed for powder coating here is 250 deg C.



A tense powder spraying process on a test piece & a final coating of up to 3000 microns thick coating.
 
The process of spraying 3 coating layers to form the final finish product required a timely coordinated work done together by a few sprayers for powder fusion before the material temperature drops below the temperature needed for effective fusion coating.



Summarized Product Brochures


Roll-Conveyor Section Blasting Machine
Roll-Conveyor Section Blasting Machine
Section Blasting Machine Models References
Section Blasting Machine Models References
Machine Mobilization to Site
Machine Mobilization to Site
Skew-Roll Type Pipe Blasting Machine
Skew-Roll Type Pipe Blasting Machine
Our Blasting & Painting Shops 

In Nilai N. Sembilan & Plentong Johor Bahru



Our blasting & painting facilities,


Shop I Shop II
  • Blasting Room size 4.5Wx9mL
  • Auto-Blast 1.5mWx0.6mH
  • Tumblast Equipment T300
  • Rotary Table machine D1.2m
  • Pipe Internal Surface Blasting
  • Vacuum Suction Pot Blasting
  • Spray Painting Booth
  • Blasting Room size 4.5Wx14mL
  • Auto-Blast 1.2mWx2.5mH
  • Tumblast Equipment T200
  • Wet blast system for lorry & excavator restoration painting
  • Floor blast machine on steel and concrete surface
  • Vacuum Recovery System
  • Chemical plant coating equipment

The type of works we do,
  • Car Component Parts Reconditioning
  • Scaffold Structure Surface Cleaning

  • New Fabrication Blasting

  • Pipe & Fittings Blasting
  • Oil & Gas Valves Blast Coating

Scaffold steel & Aluminium Structure, engine skid and motor component restoration cleaning
 
Equipment Capable of Handling Abrasives Type Steel Grit, Steel Shot, Garnet & Alox.


Small Parts Job



Our blasting shops are equipped with several different small items blasting machines to carry out blast cleaning works on various shapes and sizes as shown here; forged components, machined parts, engine part recondition. Including blasting quality inspection before we undertake the jobs.
 
Environmental Friendly Set Up. Dust Collectors, Spray Filtration, Mechanical & Vacuum Recovery


Mobilization to Contract Site


Fabricated structural steel sections & parts blasting and painting at contract site


Ref Pics Above: Tanjung Bin Power Plant Construction
Main contractor has set up a yard for fabrication of all steel works. All contractors for fabrication and painting works are required to do the production works under strict QA control in one place.
 
AirBlast (M) S/B as the sole blasting contractor at site mobilizes 2 blasting machines, air blast equipment included as touch up tools.


Tank Farm Construction


Tank plates blasting and painting with a selection of several machine methods


WEBLAST has machines going to project sites, such as Pulau Indah Mobil Tank Farm, Kerteh-Gebeng Petro-Chemical Tank Farms, KLIA Aero Fuel Tanks, South Klang Valley Oil Distribution Center, Petronas Sudan, Shanghai Vessel, Kimanis Sabah KNM & more.
 
We provide 2 Types of Plate Handling methods;
  • Monorail Trolley Rope Hanger catering for plate size up to 4mW, single side blasting at one pass 
  • Inclined Roller Support Conveyor catering to plate size up to 2.5mW, both sides blasting at one pass
 
Constructed for easy mobilization to construction site; saving time in handling with high rate production blasting at 4 to 9 m2/min SA 2.5.


Tank material blasting set up in Melaka and Sarawak



Blast Room Set Up & Work at Site


Fully portable blast room design complete with full floor recovery abrasive sweeper system, a dust collector provides well ventilated working space with clear view of work in progress.


Type of work varies, mainly shaped objects, small or large that can fit into the room space.
 


Summarized Product Brochures


Our Blasting & Painting Shops
Our Blasting & Painting Shops
Small Parts Job
Small Parts Job
Mobilization to Contract Site
Mobilization to Contract Site
Tank Farm Construction
Tank Farm Construction
Old Machine Repair & Retrofitting



Services Available Include:
  • Inspection of old machine to identify repair works needed
  • Submission of Repair, Reconditioning or Retrofitting Proposal
  • Provision of new parts & equipment + Electrical Works Repair/Fittings
  • Carry out works inside our shop as well as at site where suitable

  • Test running of completed works to achieve blasting quality expected
  • Technical documentation & handing over equipment to client


 
WEBLAST has in stock a wide range of parts needed for blasting machine;
 
  • The main blasting cabinet 
Blast lining manganese steel plates, high chromium steel fastener, rollers, cabinet seal, rubber curtain or polycarbonate fingers
  • The blast Wheel Units
Consisting of the motor, housing, side liners, end liners, top liner, blade cage, wheel blades, control tube, impeller, feed chute, abrasive valves and abrasive hose
  • The Material Handling Conveyor
This could be rollers, overhead chain hangers, motor & drives mechanism, belts, chains
  • The Abrasive Recovery System
The screw conveyors, bucket elevator, air wash separator, rotary screen
  • The Dust Collector
Ventilation design and collector sizing with full range of parts; sock type filter bags, filter cartridges, diaphragm valves, reverse pulse jet cleaning & timer control panel, duct works, centrifugal fan, rotary gate valves
  • The Control System
The electrical control design, provision of component parts in combination of pneumatic system and hydraulic system where it is needed
 

Dust Collectors

Conventional Cartridge Collector



Model CDC4


Model CDC18
Model CDC Dust Collector
 
CDC4         2000CFM        3HP
CDC6         3000CFM        5HP
CDC8         4000CFM        7.5HP
CDC12       6000CFM        10HP
CDC18       9000CFM        15HP
CDC24      12000CFM       20HP
CDC36      18000CFM       30HP
 Filter Cartridge Type
 Eg. CDC4 = 4 Cartridges
 
 Cartridge Model 660FA325
 Height 660mm x Diameter 325mm 
 Filter Efficiency 90-95%
 
 Automatic Pulse Jet Reverse Filter Cleaning System

 


Down Flow Type Cartridge Collectors


 

Model CFM HP
2DF8
3DF12
3DF16
3DF24
3DF36
4450
5750
7670
9300
14000
7.5
10
15
20
25
Model Naming, Eg. 2DF8 = 2 rows 8 cartridges
Cartridge Code 660DO325 size 660mmH x Diameter 325mm Filter efficiency 90-95%
Automatic pulse jet reverse filter cleaning system installed


Sock Type Filter Bag Dust Collector


Model FbDc Filter bag type collector installed for blasting rooms

Full Line Supplies for your own DIY needs; 
  • Design detailed drawings
  • Fabrication of steel works
  • Various filter material as choice
  • Automated cleaning control unit
  • Centrifugal suction fan of all sizes
  • Explosion proof setup available
  • Lasting galvanized duct works
  • All environment friendly installation

Design sized to meet your specific required air flow capacity.
 


DIY Your Own Blasting Equipment
 
Buy Parts From Us!
 
We represent WEBLAST & WBM
In provision of parts & technical support sales
 
We are FULL-LINE SUPPLIER for all items you may need to build a machine type Rotary Table, Tumblast, Spinner Hanger, Monorail, Roll-Conveyor, Skew-Roll Pipe, Suction Blast Cabinet, Air Filters, Automated Components & Electrical Control system or components.       Call Us to Discuss Your Needs



Centrifugal type wheel that does the propelling of abrasive at a continuous high speed stream of shots hitting the material surface resulting in surface cleaning, was invented in the early years of 1900. 
 
The blast wheel has since been redesigned and fine tuned many times in application methods and advancing material technology. The nature of severe wear and tear in abrasive blasting requires the wheel component to be made durable for a reasonable operation time before changing the parts. 



Each blast wheel cleaning capacity is defined by its related horsepower rating. WEBLAST can supply the full range that might be needed for a job. Generally, we recommend the sizes below:

HP 5.5 10 15 20 25 30 50
Kw 4 7.5 11 15 18.5 22.5 37.5
Call us to find out what horsepower of the blast wheel is suitable for your application.


Buying Parts for DIY Projects

We show you a partial list of items needed for your DIY projects here.






 


Blast Pots & Related Parts



Blast pots are pressurized, tank like containers, filled with abrasive material, used to allow an adjustable amount of blasting grit into the main blasting line.
 
We are importing all items suitable for your application. Call us to check on stock available.



The most productive combination of parts for a blast pot assembly allows for shut-off of compressed air and abrasive grits separately. A handy radio signal button switches control such,

 

Button Combination Air Valve Grit Valve
0  0
1  0
1  1
Off
On
On
Off
Off
On

This allows full control by the blaster himself without assistance from others to begin the air line, turn on the grit valve, shutting off the grit valve only & finally shut off the air supply.
 
The abrasive valve has a full adjustment range for abrasive flow from very small to maximum. It also means the possibility of changing blast gun size with a smaller hose for different types of work. Allowing full capability in a single blast pot combination.


Wet Blast Cleaning

Do you have soiled & dirty equipment such as an excavator or truck that requires old paint removal for recoating works?



We can provide non-destructive dust free wet blast reconditioning equipment for such cleaning purposes.



Model DB225 Blast Tank Specification Includes:


  • 2 Cubic foot capacity
  • 15mL blast hose
  • 30 mins blasting time per fill
  • Deadman safety valve
  • Compressor needed 185CFM 50HP
  • Size 1.4m x 660mmH x 870mmL
  • Boron carbide nozzle
  • Weight 120kg
  • Filling funnel with screen
Other model DB500 etc of bigger capacity


Summarized Product Brochures

Machine Retrofit
Machine Retrofit
CDCseries
CDCseries
Down Flow Type Dust Collector
Down Flow Type Dust Collector
Filter Bag Dust Collector
Filter Bag Dust Collector
Switch To Desktop Version