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Tag: hlavni-cinnosti-firmy:Waterjet Řadit dle

Řezání vodním paprskem ve 3D a s eliminací úkosu - hlavní parametry našeho nového stroje.

High-pressure water jet s a modern precise technology for cutting most flat materials (metals, plastics, rubber, glass, stone, ceramics...) up to a thickness of approx. 100 - 200 mm by cold cut. {rokbox  thumb=|images/stories/voda1-tn.jpg| title=|Water jet cuts to wood|}images/stories/voda1.jpg{/rokbox} {rokbox  thumb=|images/stories/voda2-tn.jpg| title=|Water jet cuts to aluminium|}images/stories/voda2.jpg{/rokbox}

High-pressure water jet is a modern precise technology for cutting most flat materials (metals, plastics, rubber, glass, stone, ceramics...) up to a thickness of approx. 100 - 200 mm by cold cut.

 

{rokbox thumb=|images/obr1.jpg| title=||}images/obr1.jpg{/rokbox} For cutting titanium (thickness of 60 mm) a beautiful lighting effect occurs

 

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Detail of the cut of metal by water jet

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Detail of the cut of layered glass

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Plastic parts

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Cogwheels cut by water jet

For laser cutting the quality of the cut in various setups of the parameters for cutting cannot be changed. It is always necessary to set the optimum parameters for cutting in order to achieve the optimum quality of the cut. Again, this depends on the thickness of the material. In general it can be said that a cut up to a thickness of 5-8 mm is smooth, even and without scale, while with increasing thickness characteristic laser grooving appears, as well as minor scaling and weld-on spots on the bottom side. At the upper border of the thickness the grooving is quite distinct and negative features can also be quite substantial on the bottom side (again it depends on the amount of heat introduced). Thanks to the new deburring machine and high cutting quality of the modern laser machines we produce besides the standard cut-only parts also part perfectly deburred and cleaned according to customer´s demand.

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Deburring machine

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Example of a perfectly deburred and grinded copper part

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The quality of the laser cut for stainless steel at a thickness of 2 to 15mm

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The quality of the laser cut for structural steel at a thickness of 3 to 15 mm

For stainless steel it is possible to use, in the place of nitrogen (which gives a shiny quality cut), oxygen as an auxiliary gas, which brings relatively significant cost savings of about 20%. The quality of the cut, however, is much worse, the cut is black, oxidized and coarse.

{rokbox thumb=|images/DSC00045-tn.jpg| title=||}images/dsc00045.jpg{/rokbox}

A comparison of the quality of the laser cut when using oxygen and nitrogen (upper sample)

HOW MUCH DOES A 1 METER CUT COST, ONE OPENING...?

The cost of cutting depends on:

Type and thickness of the material Complexity of the cut form, amount of burn off and opening Batch orders, total volume of long-term cooperation Operational demands Requests for cleaning, packaging, etc.

In view of the large amount of factors affecting forming costs, it is not possible to provide an objective "price list, informative….." prices for a cut of 1 m, etc. We will quickly prepare an exact offer for you based on your inquiry. The inquiry should include: The forms of the pieces (including any specifications about what should and should not be cut - for example, in case of exact openings, modifying diameters for threads, extras for cutting, etc.), including requested tolerances (mainly if the laser possibilities of +/- 0.1-0.2 mm approach) for bent components, which is advantageous for adding shapes - for the form of the order see Forms and Geometry of the Cut The expected amount of parts - for long-term volumes, it's good to fix a minimum amount for individual orders The exact specification of grade and thickness of the material and information about the request for the order, including or without material Any additional requirements for treatment, packaging, producing test samples, etc. Any additional requirements for treatment, packaging, producing test samples, etc. Required term for manufacturing orders or jobs - especially express ones Contact for the inquiry - as much as possible, including a concrete name

Of course, we're happy to work on even incomplete orders, but processing the offer takes longer and leads to possible distortions. In any case we always try to offer very agreeable prices and we are ready to negotiate about pricing, delivery and payment conditions.

We can use our experience to specify several examples of applications, in which water jet is not only technologically suitable, but also economically efficient:

Clean cutting aluminum, duralumin, copper, brass, bronze, etc., with rough machining for most thicknesses Clean cutting steel (structural and mainly stainless steel) at a thickness above the capabilities of laser Cutting rough semi-finished products for subsequent machining from steel (again, mainly stainless steel) of any range of thickness with minimum allowance {rokbox thumb=|images/n/039-tn.JPG| title=||}images/n/039.JPG{/rokbox}

Chain rounds, steel thickness 60mm

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Process of smaller parts

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Cut in aluminum 150mm, quality Q3

Cutting materials for hot treatment - refining or after hot treatment, in which they are not heat-affected by the cut Cutting hard-to-machine steels - tool steel, hardened steel, abrasion-resistant (hardox, abrazit, altrix...), etc. Cutting hard-to-work materials like fiberglass, rubber textile, soft and hard rubber, plastics, sealants, etc. Cutting non-homogenous layered materials - sandwich - e.g. rubber on metal, sigraflex, etc. Cutting signs, logos, etc., for advertising and presentation purposes from the widest variety of material

{rokbox thumb=|images/karlovary-detail-tn.jpg| title=||}images/karlovary-detail.jpg{/rokbox}

Signs, state and regional notices from 35 mm thick stainless steel

Cutting different mosaics mostly for interior purposes (marble and other stone, tiles, paneling, carpet, combinations of various materials, ...) Cutting very thin but otherwise hard-to-work foil (especially for smaller batches) Cutting semi-finished or ready pieces for interior fixtures out of glass, stainless, brass, etc. Cutting glass (excluding tempered) into the most demanding shapes, including laminated glass, mirrors, etc. {rokbox thumb=|images/dsc00108-tn.jpg| title=||}images/dsc00108.jpg{/rokbox}

Even detailed pieces can be cut from glass 12 mm thick

{rokbox thumb=|images/kolecka-voda-tn.jpg| title=||}images/kolecka-voda.jpg{/rokbox}

RDifferent pieces of wheels

Very narrow bands can be cut (x mm) from any of the described material, including brittle (glass, stone) for final formatting, etc. Cutting foam materials for sound insulation or for packing fill for special tools, weapons, musical instruments, fragile goods, etc. Piecework operation (openings, notches, etc.) for semi-finished products. Piece and small batch orders that can be made with water jet and minimum preparation costs without having to produced tools, devices, etc.

In contrast these applications of water jet are considered technically and economically impractical:

Cutting steels with a thickness that can be managed by a laser and answers the prescribed quality, mostly for large batches (water is needlessly expensive) Cutting steel of a thickness where burning with plasma or flame is practical and technically suitable (water is needlessly expensive) Cutting pieces where a precision of 0,X mm is impractical and further working is not considered (a suitable method is electro-erosion or other types of machining) Working with precisely machined semi-finished products and locating the cuts (where optical or other precise means for measuring the semi-finished product are not possible) with a high degree of precision (better than 0.2-0.5mm) Cutting materials that soak on contact with water or otherwise are physically or optically damaged Cutting tempered glass (which disintegrates during the cut) Working semi-finished products with complex shapes where the jet cannot get close to the surface of the cut material Cost savings by cutting a number of harder panels or sheets on top of one another (sometimes this can be successful, but mostly they don't achieve the relevant financial savings, and the quality of the cut on lower panels decreases sharply)

We believe this presentation of information will be useful and we will be happy to consult with you about the advantage of specific applications.

Description of the cutting quality levels

Qualitative degree Basic characteristics Roughness Ra* in upper contour Roughness Ra* in lower contour Geometric accuracy (mm)* in upper contour Geometric accuracy (mm)* in lower contour Q5 Best cut below 3.2 approx. 3.2 +/- 0.1 +/- 0.1 Q4 Quality cut approx. 3.2 approx. 6.3 +/- 0.1 +/- 0.2 Q3 Medium cut approx. 4.0 to 12.5 +/- 0.15 According to type and strength of material Q2 Rough cut approx. 4.0 to 25 +/- 0.2 According to type and strength of material Q1 Dividing cut 4.0-6.3 to 40 +/- 0.2 Highly inaccurate

(*) Values are only for orientation and can vary according to the type material

The quality of the cut depends on the speed of cutting, as well as the type and thickness of the material

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Examples of cut

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Example of quality cut Q2

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Example of quality cut Q4

How much does cutting 1 opening cost, 1 m cut...?

The price for cutting depends on: Type and thickness of material Requested quality of the cut Complexity of the cut form Batch orders and total volume of order Operational demands Use of underlying material, etc.

In view of the amount of possible factors for forming costs, it is not possible to provide an objective price list. We calculate the price for each order individually (based on request and options, e.g., for various qualities of cut, for various batch productions, including material and without it, etc.) Orders - if possible, they should come with the exact specification of the above-mentioned parameters - via telephone, fax, by post and even electronic post. We handle all orders immediately and we would be happy to welcome you in our office or come to visit you personally.

You can find electronical form for your demand right here.

What shapes can be cut with water jet?

It's possible to cut all shapes that can be transferred in final form to the CAD format *.dwg and comply with the circular cross-section of the jet (waterjet d = 0.15 - 0.30 mm, abrasivjet d = 0.8 - 1.5(2.0) mm). The magnified drawing illustrates the limitations of shaping in sharp internal corners with the circular cross-section of the jet. Furthermore it is possible to produce also complicated „3D“ cuts under an angle up to 45°.

{rokbox thumb=|images/3d_vodni_paprsek_1-tn.jpg| title=||}images/3d_vodni_paprsek_1.jpg{/rokbox}

Example of 3D cutting I. 

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Example of 3D cutting II.

Does beveling occur when cutting with water jet?

In most cases a certain amount of beveling occurs when 2D cutting with waterjet or abrasivejet, although mostly to a maximum of 1-1.5 degrees. A. - A very slow cut or cutting soft material - the jet manages to "grind down" its natural conical shaped mark. B. - The optimum balance between the speed of the cut, resistance and the thickness of the material - the jet is maintained in a cylindrical shape for the whole time it passes through the material and beveling does not occur. C. - A very quick cut or cutting in material with higher resistance - the jet cannot "grind down" the material, not even in its input diameter and the cut finishes going downwards

Thanks to the 5-axis moving cutting head and the Progres-Jet technology it is possible today to eliminate the bevel almost to zero. The cutting head leans out so the cut on the product is square and the bevel will be on the scrap material – the proces sis fully controlled by the control system also on more complicated cuts.

How to give shape to the cut

The program for processing NC codes for cutting is done as an upgrade to the CAD program, and that's why the optimum start is with a CAD file stored on some electronical medium (or sent by e-mail) in the formats *.dwg, *.dxf. There are also import filters available for formats wmf, sat, eps, pcx, 3ds, tif, gif, but using them is often problematic and leads at a minimum to changes in the scale of the drawing. It's also possible to work with *.cdr, *.ai and several other files. Precise dimensions of the drawing or schematic are also very helpful. It's even possible to use concrete patterns - designs or documentation for scanning - a sharply printed or drawn picture. For creating signs, shapes, ornaments, etc., we can cooperate using our wealth of experience, knowledge of the technology and our own creative ingenuity.

What can be cut using water or abrasivejet?

ANYTHING. All natural or man-made materials that are not damaged by direct contact with water. All types of steel, including stainless, tool steel, hardened, spring steel. HARDOX, BRINAR, ALTRIX, etc. Copper, aluminum, duralumin, titanium, brass, bronze and all other metals and alloys. Industrial, advertising and other plastics, including laminated, etc.

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Pertinax, dural, steel, cooper ...

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Detailed Al parts, thickness 40mm

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Cutting of 50mm thick stainless steel hooks

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Also small parts can be cut with water jet

Clear glass, colored, multi-layer laminated glass (bulletproof) or otherwise modified, wire glass with the exception of hardened glass Granite, marble and other natural and artificial stones, grind stones based on SiC, and others Ceramics, porcelain, including glazed or sintered panels {rokbox thumb=|images/DSC00110-tn.jpg| title=||}images/dsc00110.jpg{/rokbox}

Mosaics made of marble or pavement

Wood, particleboard, laminated fabric, plywood, etc. Carpet, felt and other textiles, leather, imitation leather, etc. Rubber, random sealant materials, composite materials, sandwiches. {rokbox thumb=|images/n/037-tn.JPG| title=||}images/n/037.JPG{/rokbox}

Detailed cutting of safety glass (boneded), thickness 30mm

The most suitable for cutting are sheets, panels or boards, however, it is possible to also work semi-finished products, surface treated materials (coloration, polishing...), etc. Thanks to a vertical sensor it is possible to cut even corrugated surfaces or shaped materials in continuous curves.

Thickness of the cut material

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Pieces cut cleanly from stronger steels - thickness 25, 40 and 65 mm

The thickness of the cut material depends on the hardness or toughness of the material and the requirements for the accuracy and quality of the whole shape of the cut. It generally applies that any material can be cut from foil 0,x mm up to a thickness of 100 mm. Precise quality cuts in metals and similar materials can be done up to a thickness of approx. 70 mm. Rough cuts can also be made in a thickness from 150 - 250 mm. Metals

{rokbox thumb=|images/n/046-tn.JPG| title=||}images/n/046.JPG{/rokbox} {rokbox thumb=|images/n/007-tn.JPG| title=||}images/n/007.JPG{/rokbox} {rokbox thumb=|images/n/038-tn.JPG| title=||}images/n/038.JPG{/rokbox} {rokbox thumb=|images/bago1-tn.jpg| title=||}images/bago1.jpg{/rokbox} {rokbox thumb=|images/bago2-tn.jpg| title=||}images/bago2.jpg{/rokbox} {rokbox thumb=|images/bago3-tn.jpg| title=||}images/bago3.jpg{/rokbox}

Water jet is able to cut also very thick materials - 250mm thick steel

Ceramics

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Plastics and glasses

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Various

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Rubber, foam, sealants ...

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Advertisement signs

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Logo cut from a carpet

What is high-pressure water jet?

The technology for cutting various materials using water jet or abrasivejet was developed at the end of the 1970s and beginning of the 1980s by the firm FLOW INTERNATIONAL (USA), mostly in the beginning for use in the military and aeronautics program. By the mid-1980s it was already widely used in America and later in countries of Western Europe. Today it has expanded worldwide to include all areas of industry. The basis for each cutting system is a high-pressure pump that, with the use of a multiplicator, generates water pressure today of more than 400 Mpa (4000 Bar). In industry expirience, currently are being tested a machines with water pressure of 6000 Bar, even more. But this machines are compensated by lower lifetime of their many components. The highly pressurized water is led to the cutting head, where the "cutting tool" is created by a system of nozzles. It can be an approx. 0.15-0.30 mm wide water jet able to cut softer materials such as plastics, wood, rubber, cork, sealants, foodstuffs, etc. The other option most often used is an approx. 0.8-1.5 mm wide abrasivejet with an abrasive powder added (usually garnet "sand"). Thanks to its high energy, the abrasivejet is able to cut metals, stone, glass and other materials at a thickness of 100 mm or more. The modern development enabled to mount the cutting head to a 5-axis holder which brings the possibility to cut under an angle and in „3D“ and also a possiblity of technological improvement of the shape accuracy of the products and cutting speed. We use the modern technology of the top-class worldwide producer Flow International and Czech producer PTV.

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New PTV machine with 3D cutting possibility  

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Cutting system PTV

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The heart of water jet technology -the high pressure pump

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High-pressure pump for the cutting system PTV 

CUTTING SYSTEM New line PJ-2Z-5AX

Working area of the table 3000 x 2000 mm Speed of cutting 1-10000 mm/min Repeatable cutting accuracy 0,1mm Working water pressure 420 MPa 2 cutting heads, of which one 5-axis PROGRES-JET Technology

CUTTING SYSTEM WJ2030B-2Z-C

Working space on the desk 4000 x 2000 mm The speed of cutting 1 - 6000 mm/min Repeatable cutting accuracy 0,1mm Working water pressure 400 MPa 2 cutting heads

Advantages and disadvantages of technology

ADVANTAGES

Cutting takes place without using a heat medium (max. temperature approx. 40-50°C), thus the material shows no physical, chemical or mechanical changes and it's easy to machine afterwards. The work piece is not deformed by heat (deformation due to internal stress in the material cannot be excluded) For materials with a higher thickness, pieces can be put close to one another, which often saves on the material; it is even possible to use a so-called combined cut All materials can be cut, including metals and alloys, hardened or otherwise treated, as well as materials that are hard to work, such as fiberglass, glass, rubber textiles, soft and hard rubber, plastics, sealants etc. Not even surface treatments are a factor for cutting - polishing, grinding, komaxit ... The type of operation can be replaced (cutting, drilling, milling...) with one technological process The quality of the cut can be selected, from the best with a roughness of an Ra under 3.2 up to rough cuts that are significantly ribbed, with a significant change in price For higher quality of cuts there is usually no need for further machining The form of the cut is limited only by the circular cross-section of the jet; cutting very fine contours is also possible, Possiblity of cutting under an angle up to 45° and „3D“ Mosaics and inlays can be created from all types of different materials (e.g., metals to stone or tile, glass to plastics or wood)... No noxious fumes are created during the cut, so it involves a technology that is environmentally friendly DISADVANTAGES The unavoidable contact with water and often with an abrasive material (without proper and immediate handling surface corrosion occurs quickly, moisture-absorbent materials require longer drainage, changes in color can occur, contamination, etc.) These limitations affect many small pieces (under approx. 3-5 cm) - this can possibly be solved with bridgework Lower qualities of cuts on stronger materials leads to a deformation of the contour of the cut on the bottom edge due to so-called drifts of the jet

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Foraminiferous semi-finished steel products, thickness 60mm

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Efective water-jet cutting by two heads ...

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Use of bridgework for cutting small pieces from 9 mm stainless steel

News

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In January 2018 we have launched a new press brake

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Deburring Machine

New deburring Machine

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Laser-cut parts

Exquisite laser-cut parts

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3D Water jet cutting

Řezání vodním paprskem ve 3D a s eliminací úkosu - hlavní parametry našeho nového stroje.

Read more ...
 

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Water jet cutting

High-pressure water jet s a modern precise technology for cutting most flat materials (metals, plastics, rubber, glass, stone, ceramics...) up to a thickness of approx. 100 - 200 mm by cold cut. Water jet cuts to wood
Water jet cuts to aluminium
 

Laser cutting

Laser is a modern precise technology for cutting mainly structural-, stainless- and other types of steel and also other suitable metals up to a thickness of approx. 15-25mm.
Cog wheels cutted by laser Stainless stell th. 5mm
 

Metal processing

We focus above all on precision processing of stainless steel and other high-grade metal sheets into the form of ready. Bending of metal parts
Bending, welding and cleaning of metal part
 

Our motto

Company Motto