Report WOMA GmbH Werthauser Str. 77-79 · D-47226 Duisburg P.O. Box 14 1820 · D-47208 Duisburg Phone +49(0)2065/304-0 · Fax +49(0)2065/304-200 Internet: www.woma.de E-mail: [email protected] Cutting Technique Design of WOMA’s abrasive water jet cutting head Approximated cutting speeds for structural steel and reinforced concrete Cutting circular openings in steel plates WOMA has done pioneer work in the field of abrasive high-pressure water jet cutting. As early as in 1974, a reinforced concrete wall was cut out in the basement of a data processing centre by means of a combined water and silica-sand jet without causing any vibrations – an unparallelled occurrence in the world at that time. Based on the newly developed ultra-high pressure technology it is now possible to use high-pressure water jets as a cutting tool in the outdoor industry – especially in the construction industry, maintenance, chemical processing industry, and the demolition industry. The general idea of the abrasive high-pressure water jet technique is adding small solid particles to the water jet, which are also called abrasives. The distinctive feature of the WOMA abrasive water jet technique is the fact that the required high water pressures are generated by plunger pumps which have a very favourable degree of efficiency and have proved successful in many branches of industry for many years. Why Abrasive High-Pressure Water Jets? Cutting is possible in all positions. Small tool dimensions. Any kind of shapes can be cut. The cutting progress is continuously adjustable and can be controlled. Low reaction forces, which makes mechanization/automation possible. No significant impact noise. No vibrations. Compressed water Abrasives Mixing chamber Focusing pipe Water abrasive jet 10 Cutting speed in m/h 1 3 5 7 9 2 4 6 8 0 0 10 20 30 40 50 60 70 80 90 Material thickness to be cut in mm Material: Steel St 37 Pressure: 2,000 bar Abrasive rate: 2.6 kg/min Abrasive size: 0.5 mm Cutting speed in m/h 5 1 2 3 4 0 0 100 200 300 400 500 600 700 800 900 Material thickness to be cut in mm Material: Concrete Reinforcement: 2 x 6 mm Pressure: 2,000 bar Abrasive rate: 2.6 kg/min Abrasive size: 0.5 mm 1000 Water as a tool
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Report
WOMA GmbHWerthauser Str. 77-79 · D-47226 DuisburgP.O. Box 14 1820 · D-47208 DuisburgPhone +49(0)2065/304-0 · Fax +49(0)2065/304-200Internet: www.woma.deE-mail: [email protected] R-
ST 9
.06-
E · C
ase
Stud
y · S
ubje
ct t
o ch
ange
Cutting Technique
Design of WOMA’s abrasive water jet cutting head
Cutting openings in large storage vessels
Demolition of double-walledsteel structures
Partial demolition of heavily reinforced concrete ceilings
Pipe cutting with the high-preciseabrasive water jet cutting system
Approximated cutting speeds for structural steel andreinforced concrete
Cutting circular openings in steel plates
WOMA has done pioneer work in the field of abrasive high-pressure water jet cutting. As early as in 1974, a reinforced concrete wall was cut outin the basement of a data processing centre by means of a combined water and silica-sand jet without causingany vibrations – an unparallelled occurrence in the world at that time.Based on the newly developed ultra-high pressure technology it is now possible to use high-pressure water jets as a cutting tool in the outdoor industry – especially in the construction industry,
maintenance, chemical processing industry, and the demolition industry.The general idea of the abrasivehigh-pressure water jet techniqueis adding small solid particles to the water jet, which are also called abrasives. The distinctive feature ofthe WOMA abrasive water jet technique is the fact that the required high water pressures are generatedby plunger pumps which have a very favourable degree of efficiency and have proved successful in many branches of industry for many years.
Why Abrasive High-PressureWater Jets?
Cutting is possible in all positions.
Small tool dimensions.
Any kind of shapes can be cut.
The cutting progress is continuously adjustable and can be controlled.
Low reaction forces, which makes mechanization/automation possible.
No significant impact noise.
No vibrations.
No formation of dust, vapour, gas and slag.
No thermal and mechanical stresses at the cutting or breaking edges.
Large cutting depth in one operation.
The cutting of composite materials with one cutting step is possible.
Application under water is possible.
These operational characteristics predestine abrasive high-pressure water jets for the use on or in occupied and managed buildingssuch as hotels, hospitals, office buildings, and constructions whichare sensitive to dust and vibrations (e.g. data processing centres, locations of precision measuring instruments), and in narrow rooms.
The Range of Materials
The WOMA abrasive water jet cutting technique is suitable for effectively cutting most of the materials used in industry. The range of materials ranks from alloyed construction materials over steels, concrete and highly reinforced concrete, to high-strength ceramics.
The Technique
WOMA offers complete abrasive high-pressure water jet cutting systems for on-site-applications consisting of high-pressure plunger pump, cutting head, pneumatically driven guiding unit, abrasive tank, and control device.
The WOMA abrasive high-pressure water jet cutting program includes the following tools and accessories:
Eco Top Cutter system for linear cutting for thin-walled structures aswell as for thick-walled structures.
Eco Top Cutter system for circular cutting of vessels, pipes etc. forthin-walled structures as well as for thick-walled structures.
Cutting system for generatingcircular openings in plane or curved walls.
High-precision cutting system for separating and demolishing pipes, vessels etc.
Abrasive hopper including pneumatically driven control panel for cutting speed control.
Different abrasive material typesand sizes.
Compressed water
Abrasives
Mixingchamber
Focusing pipe
Water abrasive jet
10
Cutting speed in m/h
1 3 5 7 92 4 6 800
10
20
30
40
50
60
70
80
90M
ater
ial t
hic
knes
s to
be
cut
in m
m
Material: Steel St 37Pressure: 2,000 barAbrasive rate: 2.6 kg/minAbrasive size: 0.5 mm
Cutting speed in m/h
51 2 3 400
100
200
300
400
500
600
700
800
900
Mat
eria
l th
ickn
ess
to b
e cu
t in
mm
Material: ConcreteReinforcement: 2 x 6 mmPressure: 2,000 barAbrasive rate: 2.6 kg/minAbrasive size: 0.5 mm
1000
Water as a tool
Report
WOMA GmbHWerthauser Str. 77-79 · D-47226 DuisburgP.O. Box 14 1820 · D-47208 DuisburgPhone +49(0)2065/304-0 · Fax +49(0)2065/304-200Internet: www.woma.deE-mail: [email protected] R-
ST 9
.06-
E · C
ase
Stud
y · S
ubje
ct t
o ch
ange
Cutting Technique
Design of WOMA’s abrasive water jet cutting head
Cutting openings in large storage vessels
Demolition of double-walledsteel structures
Partial demolition of heavily reinforced concrete ceilings
Pipe cutting with the high-preciseabrasive water jet cutting system
Approximated cutting speeds for structural steel andreinforced concrete
Cutting circular openings in steel plates
WOMA has done pioneer work in the field of abrasive high-pressure water jet cutting. As early as in 1974, a reinforced concrete wall was cut outin the basement of a data processing centre by means of a combined water and silica-sand jet without causingany vibrations – an unparallelled occurrence in the world at that time.Based on the newly developed ultra-high pressure technology it is now possible to use high-pressure water jets as a cutting tool in the outdoor industry – especially in the construction industry,
maintenance, chemical processing industry, and the demolition industry.The general idea of the abrasivehigh-pressure water jet techniqueis adding small solid particles to the water jet, which are also called abrasives. The distinctive feature ofthe WOMA abrasive water jet technique is the fact that the required high water pressures are generatedby plunger pumps which have a very favourable degree of efficiency and have proved successful in many branches of industry for many years.
Why Abrasive High-PressureWater Jets?
Cutting is possible in all positions.
Small tool dimensions.
Any kind of shapes can be cut.
The cutting progress is continuously adjustable and can be controlled.
Low reaction forces, which makes mechanization/automation possible.
No significant impact noise.
No vibrations.
No formation of dust, vapour, gas and slag.
No thermal and mechanical stresses at the cutting or breaking edges.
Large cutting depth in one operation.
The cutting of composite materials with one cutting step is possible.
Application under water is possible.
These operational characteristics predestine abrasive high-pressure water jets for the use on or in occupied and managed buildingssuch as hotels, hospitals, office buildings, and constructions whichare sensitive to dust and vibrations (e.g. data processing centres, locations of precision measuring instruments), and in narrow rooms.
The Range of Materials
The WOMA abrasive water jet cutting technique is suitable for effectively cutting most of the materials used in industry. The range of materials ranks from alloyed construction materials over steels, concrete and highly reinforced concrete, to high-strength ceramics.
The Technique
WOMA offers complete abrasive high-pressure water jet cutting systems for on-site-applications consisting of high-pressure plunger pump, cutting head, pneumatically driven guiding unit, abrasive tank, and control device.
The WOMA abrasive high-pressure water jet cutting program includes the following tools and accessories:
Eco Top Cutter system for linear cutting for thin-walled structures aswell as for thick-walled structures.
Eco Top Cutter system for circular cutting of vessels, pipes etc. forthin-walled structures as well as for thick-walled structures.
Cutting system for generatingcircular openings in plane or curved walls.
High-precision cutting system for separating and demolishing pipes, vessels etc.
Abrasive hopper including pneumatically driven control panel for cutting speed control.
Different abrasive material typesand sizes.
Compressed water
Abrasives
Mixingchamber
Focusing pipe
Water abrasive jet
10
Cutting speed in m/h
1 3 5 7 92 4 6 800
10
20
30
40
50
60
70
80
90
Mat
eria
l th
ickn
ess
to b
e cu
t in
mm
Material: Steel St 37Pressure: 2,000 barAbrasive rate: 2.6 kg/minAbrasive size: 0.5 mm
Cutting speed in m/h
51 2 3 400
100
200
300
400
500
600
700
800
900
Mat
eria
l th
ickn
ess
to b
e cu
t in
mm
Material: ConcreteReinforcement: 2 x 6 mmPressure: 2,000 barAbrasive rate: 2.6 kg/minAbrasive size: 0.5 mm
1000
Water as a tool
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