GB2417252A - Decorating tool head with titianium coating - Google Patents

Decorating tool head with titianium coating Download PDF

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Publication number
GB2417252A
GB2417252A GB0418699A GB0418699A GB2417252A GB 2417252 A GB2417252 A GB 2417252A GB 0418699 A GB0418699 A GB 0418699A GB 0418699 A GB0418699 A GB 0418699A GB 2417252 A GB2417252 A GB 2417252A
Authority
GB
United Kingdom
Prior art keywords
tool head
titanium
coating
tool
blade
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
GB0418699A
Other versions
GB0418699D0 (en
Inventor
Stuart Hobbs
Andrew Fox
Matthew Page
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Harris and Co Ltd
Original Assignee
LG Harris and Co Ltd
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 LG Harris and Co Ltd filed Critical LG Harris and Co Ltd
Priority to GB0418699A priority Critical patent/GB2417252A/en
Publication of GB0418699D0 publication Critical patent/GB0418699D0/en
Publication of GB2417252A publication Critical patent/GB2417252A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B9/00—Blades for hand knives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B27/00—Hand cutting tools not provided for in the preceding groups, e.g. finger rings for cutting string, devices for cutting by means of wires
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B3/00—Hand knives with fixed blades
    • B26B3/08—Hand knives with fixed blades specially adapted for cutting cardboard, or wall, floor, or like covering materials
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/0015—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterized by the colour of the layer
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/0021—Reactive sputtering or evaporation
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/04—Coating on selected surface areas, e.g. using masks
    • C23C14/042—Coating on selected surface areas, e.g. using masks using masks
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • C23C14/0641—Nitrides

Abstract

Hand tools, especially decorating tools, are provided with a tool head 5 having a coating of titanium-nitride that improves the strength, durability, and wear resistance of the tool head. The titanium-nitride coating may be formed by vaporising titanium in an atmosphere of nitrogen to form a plasma of titanium and nitrogen ions that condense on the surface of the tool head. Prior to deposition the tool head may be cleaned using ultrasonic vibrations to dislodge particles from the surface of the tool. Multiple coating layers may be applied.

Description

IMPROVEMENTS IN OR RELATING TO TOOL HEADS
This invention concerns improvements in or relating to tool heads. The invention has particular, but not exclusive, application to tool heads for hand-held tools, especially decorating tools.
Decorating tools typically have a tool head comprising a blade shaped for a particular function, for example, for removing wallpaper or paint from a surface, or for applying putty.
It is an object of the invention to provide a tool head with improved characteristics.
According to a first aspect of the invention there is provided a tool head provided with a coating of titanium. The coating may be titanium metal but more preferably is titanium-nitride.
Typically, the tool head comprises a blade made of metal or alloy with the coating of titanium or titanium-nitride. For example, the tool head may be steel and the coating improves the properties of the steel tool head.
Preferably, the tool head is provided with a handle for manoeuvring the tool head in use. For example, the tool head may be employed in a decorating tool.
According to a second aspect of the invention there is provided a method of coating a tool head with titanium by vacuum deposition.
Preferably the method includes the step of cleaning and drying the tool head prior to coating. For example, the tool head may be subjected to l ultrasonic vibrations that dislodge particles from the surface of the tool head. In this way, adhesion of the coating to the tool head is enhanced.
Preferably the vacuum deposition is carried out in a vacuum chamber by vaporising titanium to form a plasma of titanium ions by means of one or more arc generators and arranging the tool head so that titanium from the plasma is deposited on to the tool head.
Preferably, nitrogen is introduced into the vacuum chamber at the same time the titanium is vaporised to provide a coating of titanium-nitride on the tool head.
The invention will now be described in more detail, by way of example only, with reference to the accompanying drawings, in which: FIGURE 1 shows a perspective view of a scale-tang tool blade for use in decorating according to the invention with the handle and connecting rivets of the tool shown in dotted lines; and FIGURE 2 is a flow chart of a method of applying a coating to the blade by vacuum deposition according to the invention.
Referring to Figure 1, a scale-tang tool 1 has a blade 2 having a tang portion 3 for attaching a two piece handle (or scale) 4 to the blade 2 and a head portion 5 shaped for a particular purpose, such as cutting, scraping.
The handle 4 is connected to the blade 2 by rivets 6 passing through holes 7,8 in the handle 4 and tang portion 3. The blade 2 is made of steel with a coating of titanium-nitride. The blade may be made of other metals or alloys. l
A method of applying the titanium-nitride coating to the blade 2 will now be described with reference to Figure 2.
The blade 2 is first cleaned and dried with ultrasonic cleaning equipment to dislodge fine particles from the surface. Usually, the blade 2 has been pre-cleaned before cleaning and drying with the ultrasonic equipment.
The blade 2 is then hung in a vacuum coating oven and air removed from the oven to form a vacuum therein. A block of solid titanium is also provided in the oven.
The titanium is then vaporised using arc generators, as known in the art.
In this embodiment, four arc generators are provided but it will be understood any number of arc generators may be employed.
Simultaneously, nitrogen is introduced into the oven to mix with the vaporised titanium and form a plasma of titanium and nitrogen ions.
The blade is positioned in the oven to provide a target exposed to the plasma. Plasma contacting the surface of the blade condenses and deposits a coating of titanium-nitride on the surface of uniform thickness.
The coating may be applied to the whole of the blade or to selected areas by masking any areas not to be coated.
In this embodiment, the working temperature of the oven is initially 120 C rising to 300 C towards the end of the process which lasts for a period of 4 minutes. These temperatures and times are not intended to be limiting and may vary according to the requirements of the process.
The coating process may be repeated to apply successive coating layers until the desired coating thickness is obtained at which point air is introduced into the oven to allow removal of the titanium-nitride coated blade from the oven.
We have found that the titanium-nitride coating improves the properties of the blade. In particular, the strength, durability, sharpness and wear resistance of the coated blade are enhanced. This has particular advantages for tool heads of decorating tools that can be subjected to severe stress in use.
A further advantage is that the titanium-nitride coating provides a gold coloured finish to the blade that may be aesthetically appealing to users/customers.
More than one blade may be coated in the oven at any one time.
Furthermore, it will be understood that the invention is not limited to scale-tang blades but includes other tool heads, in particular other tool heads of hand-held decorating tools.

Claims (14)

1. A tool head provided with a coating of titanium.
2. A tool head according to claim 1, wherein the coating is titanium metal.
3. A tool head according to claim 1 wherein the coating is titaniumnitride.
4. A tool according to claim 2 or claim 3, wherein the tool head comprises a blade made of metal or alloy with the coating of titanium or titanium nitride.
5. A tool head according to claim 4, wherein the tool head comprises a blade made of steel.
6. A tool head according to any one of the preceding claims comprising a handle.
7. A tool head substantially as hereinbefore described with reference to Figure 1 of the accompanying drawings.
8. A decorating tool comprising a tool head according to any one of the preceding claims.
9. A method of coating a tool head with titanium by vacuum deposition, the method including vaporising in a vacuum chamber titanium to form a plasma of titanium ions by means of one or more arc generators and arranging the tool head so that titanium from the plasma is deposited on to the tool head.
10. A method according to claim 9 comprising the step of cleaning and drying the tool head prior to coating.
11. A method according to claim 9, wherein the tool head is subjected to ultrasonic vibrations that dislodge particles from the surface of the tool.
12. A method according to any one of claims 9 to 11, wherein nitrogen is introduced into the vacuum chamber at the same time the titanium is vaporised to provide a coating of titanium nitride on the tool head.
13. A method according to any one of claims 9 to 12, wherein the method steps are repeated to form successive coatings on the tool head.
14. A method of coating a tool head substantially as hereinbefore described with reference to Figure 2 of the accompanying drawings.
GB0418699A 2004-08-21 2004-08-21 Decorating tool head with titianium coating Withdrawn GB2417252A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0418699A GB2417252A (en) 2004-08-21 2004-08-21 Decorating tool head with titianium coating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0418699A GB2417252A (en) 2004-08-21 2004-08-21 Decorating tool head with titianium coating

Publications (2)

Publication Number Publication Date
GB0418699D0 GB0418699D0 (en) 2004-09-22
GB2417252A true GB2417252A (en) 2006-02-22

Family

ID=33042445

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0418699A Withdrawn GB2417252A (en) 2004-08-21 2004-08-21 Decorating tool head with titianium coating

Country Status (1)

Country Link
GB (1) GB2417252A (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4470895A (en) * 1982-03-23 1984-09-11 United Kingdom Atomic Energy Authority Coatings for cutting implements
EP0289173A1 (en) * 1987-04-30 1988-11-02 The British Petroleum Company p.l.c. Wear-resistant coated object
JPH01190386A (en) * 1988-01-26 1989-07-31 Kawatetsu Techno Res Corp Cooking cutter
JPH037191A (en) * 1989-06-06 1991-01-14 Kawatetsu Techno Res Corp Kitchen knife of excellent corrosion resistance
EP0567300A1 (en) * 1992-04-24 1993-10-27 McPherson's Limited Knife blades
US5347887A (en) * 1993-03-11 1994-09-20 Microsurgical Techniques, Inc. Composite cutting edge
JPH08289984A (en) * 1995-04-21 1996-11-05 Sekisui Chem Co Ltd Cutter and manufacture thereof
WO1997039862A1 (en) * 1996-04-24 1997-10-30 Manuel Braun Self-sharpening cutting device
JPH09302417A (en) * 1996-05-10 1997-11-25 Daido Steel Co Ltd Material for cutting tool and its production

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4470895A (en) * 1982-03-23 1984-09-11 United Kingdom Atomic Energy Authority Coatings for cutting implements
EP0289173A1 (en) * 1987-04-30 1988-11-02 The British Petroleum Company p.l.c. Wear-resistant coated object
JPH01190386A (en) * 1988-01-26 1989-07-31 Kawatetsu Techno Res Corp Cooking cutter
JPH037191A (en) * 1989-06-06 1991-01-14 Kawatetsu Techno Res Corp Kitchen knife of excellent corrosion resistance
EP0567300A1 (en) * 1992-04-24 1993-10-27 McPherson's Limited Knife blades
US5347887A (en) * 1993-03-11 1994-09-20 Microsurgical Techniques, Inc. Composite cutting edge
JPH08289984A (en) * 1995-04-21 1996-11-05 Sekisui Chem Co Ltd Cutter and manufacture thereof
WO1997039862A1 (en) * 1996-04-24 1997-10-30 Manuel Braun Self-sharpening cutting device
JPH09302417A (en) * 1996-05-10 1997-11-25 Daido Steel Co Ltd Material for cutting tool and its production

Also Published As

Publication number Publication date
GB0418699D0 (en) 2004-09-22

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)