NL2002451C2 - Chain saw. - Google Patents

Chain saw. Download PDF

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Publication number
NL2002451C2
NL2002451C2 NL2002451A NL2002451A NL2002451C2 NL 2002451 C2 NL2002451 C2 NL 2002451C2 NL 2002451 A NL2002451 A NL 2002451A NL 2002451 A NL2002451 A NL 2002451A NL 2002451 C2 NL2002451 C2 NL 2002451C2
Authority
NL
Netherlands
Prior art keywords
chainsaw
chain saw
links
chain
surface coating
Prior art date
Application number
NL2002451A
Other languages
Dutch (nl)
Inventor
Johannes Antonius Seumeren
Nicolaas Lamphen
Original Assignee
Mammoet Holding B V
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mammoet Holding B V filed Critical Mammoet Holding B V
Priority to NL2002451A priority Critical patent/NL2002451C2/en
Application granted granted Critical
Publication of NL2002451C2 publication Critical patent/NL2002451C2/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
    • B23D61/18—Sawing tools of special type, e.g. wire saw strands, saw blades or saw wire equipped with diamonds or other abrasive particles in selected individual positions

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Description

Chain saw
The invention relates to a chain saw for sawing through an object, in particular an object located in or under water such as a ship, drilling platform, bridge, pipeline, etc.
5 Such a chain saw is known from WO 01/76797.
The known chain saw has links that are provided with a machining surface coating that comprises a hard phase of carbides, nitrides and/or borides and a binder of Co and/or Ni.
10 The machining surface coating of the chain saw of the prior art is applied by brazing, hard soldering or welding.
It is an object of the invention to provide a chain saw in accordance with the preamble, which is easy to manu-15 facture at low costs and which endures the harsh circumstances at which the chain saw of the invention may be employed in sawing operations which primarily take place under the water level. It is known that sawing for instance part of a shipwreck is a laborious task which imposes high demands on 20 the chain saw that is used for this purpose. It is an object of the invention further to improve the known chain saw in that it is capable to better withstand the conditions that are prevalent when sawing such a shipwreck.
The chain saw of the invention is characterized by 25 one or more of the appended claims.
In a first aspect the chain saw of the invention is characterized in that the machining surface coating is selected to comprise tungsten-carbide granules that are melted and subsequently solidified on the chain saw. Surprisingly it 30 is possible to work with a chain saw that is made of standard steel, although it is of course also possible to apply high grade steels of high strength and durability.
To promote the chain saw's effectiveness, it is preferable that the tungsten-carbide granules are melted on 35 the chain saw in the presence of metal additives. It is particularly useful that the metal additives are selected parti- 2 cles from the group comprising nickel, chromium, borium.
A further advantageous aspect of the chain saw of the invention is that the chain saw is a link chain with links that hook transversely into one another, and wherein 5 the machining surface coating is provided on said links.
With the chain saw of the invention it is possible to apply sawing cuts that are provided with a notable bend, which may be advantageous in particular circumstances.
The invention will hereafter be further elucidated 10 with reference to a drawing.
In the drawing a single figure is shown of a chain saw of the invention that is provided with interconnected chain links.
Fig. 1 shows a part of a chain saw 1 for sawing 15 through an object, in particular an object which is submerged in the water, such as a sunken ship or another object. The chain saw 1 has chain links 2 that are provided with a machining surface coating 3 that comprises a hard phase of carbides, nitrides and/or borides. Said machining surface coat-20 ing 3 in particular is selected to comprise tungsten-carbide granules 4 that are melted and subsequently solidified on the chain links 2.
The tungsten-carbide granules 4 are melted on the chain links 2 in the presence of metal additives, which are 25 selected particles from the group comprising nickel, chromium, borium.
Preferably the chain saw 1 has chain links 2 that hook transversely into one another, as is clearly shown in fig. 1.

Claims (4)

1. Kettingzaag (1) voor het zagen door een object, in het bijzonder een object dat zich in of onder water bevindt, zoals een schip, boorplatform, brug, pijplijn, etc., waarbij de kettingzaag is voorzien van een oppervlaktecoating (3) welk een 5 harde fase van carbiden, nitriden en/of boriden omvat, met het kenmerk, dat de oppervlaktebehandeling (3) geselecteerd is om wolframcarbide granules (4) te omvatten die gesmolten en vervolgens uitgehard zijn op de kettingzaag (1).A chainsaw (1) for sawing through an object, in particular an object located in or under water, such as a ship, drilling platform, bridge, pipeline, etc., wherein the chainsaw is provided with a surface coating (3) which comprises a hard phase of carbides, nitrides and / or borides, characterized in that the surface treatment (3) is selected to comprise tungsten carbide granules (4) which have been melted and subsequently cured on the chainsaw (1). 2. Kettingzaag (1) volgens conclusie 1, met het ken-10 merk, dat de wolframcarbide granules (4) op de kettingzaag (1) gesmolten zijn in aanwezigheid van metalen toeslagstoffen.A chainsaw (1) according to claim 1, characterized in that the tungsten carbide granules (4) are fused to the chainsaw (1) in the presence of metal additives. 3. Kettingzaag (1) volgens conclusie 2, met het kenmerk, dat de metalen toeslagstoffen geselecteerde deeltjes zijn uit de groep omvattende nikkel, chroom, borium.Chainsaw (1) according to claim 2, characterized in that the metal aggregates are selected particles from the group comprising nickel, chromium, boron. 4. Kettingzaag (1) volgens één der conclusies 1-3, met het kenmerk, dat de kettingzaag (1) een schakelketting met schakels (2) is die dwars in elkaar haken en waarin de oppervlaktecoating (3) voorzien is op deze schakels (2).Chainsaw (1) according to one of claims 1 to 3, characterized in that the chainsaw (1) is a link chain with links (2) that hook into each other and in which the surface coating (3) is provided on these links ( 2).
NL2002451A 2009-01-26 2009-01-26 Chain saw. NL2002451C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL2002451A NL2002451C2 (en) 2009-01-26 2009-01-26 Chain saw.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2002451A NL2002451C2 (en) 2009-01-26 2009-01-26 Chain saw.
NL2002451 2009-01-26

Publications (1)

Publication Number Publication Date
NL2002451C2 true NL2002451C2 (en) 2010-07-27

Family

ID=41017076

Family Applications (1)

Application Number Title Priority Date Filing Date
NL2002451A NL2002451C2 (en) 2009-01-26 2009-01-26 Chain saw.

Country Status (1)

Country Link
NL (1) NL2002451C2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8778259B2 (en) 2011-05-25 2014-07-15 Gerhard B. Beckmann Self-renewing cutting surface, tool and method for making same using powder metallurgy and densification techniques
NL2011615C2 (en) * 2013-10-15 2015-04-16 Mammoet Engineering B V Saw for sawing through an object, notably an offshore object or onshore object.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB354641A (en) * 1929-11-21 1931-08-13 Krupp Ag Improvements in the manufacture of metal cutting and working and like tools
DE606490C (en) * 1929-11-22 1934-12-04 Fried Krupp Akt Ges Process for the surface refinement of metal objects, in particular tools
WO2001076797A1 (en) * 2000-04-07 2001-10-18 Smit Engineering B.V. Chain for sawing through an object, such as an object located in or on the water, and sawing installation provided with such a chain

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB354641A (en) * 1929-11-21 1931-08-13 Krupp Ag Improvements in the manufacture of metal cutting and working and like tools
DE606490C (en) * 1929-11-22 1934-12-04 Fried Krupp Akt Ges Process for the surface refinement of metal objects, in particular tools
WO2001076797A1 (en) * 2000-04-07 2001-10-18 Smit Engineering B.V. Chain for sawing through an object, such as an object located in or on the water, and sawing installation provided with such a chain

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8778259B2 (en) 2011-05-25 2014-07-15 Gerhard B. Beckmann Self-renewing cutting surface, tool and method for making same using powder metallurgy and densification techniques
NL2011615C2 (en) * 2013-10-15 2015-04-16 Mammoet Engineering B V Saw for sawing through an object, notably an offshore object or onshore object.

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MM Lapsed because of non-payment of the annual fee

Effective date: 20200201