GB2567166A - Direct powder rolling of titanium - Google Patents
Direct powder rolling of titanium Download PDFInfo
- Publication number
- GB2567166A GB2567166A GB1716179.5A GB201716179A GB2567166A GB 2567166 A GB2567166 A GB 2567166A GB 201716179 A GB201716179 A GB 201716179A GB 2567166 A GB2567166 A GB 2567166A
- Authority
- GB
- United Kingdom
- Prior art keywords
- titanium
- flat mill
- thickness
- product
- flat
- 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- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/18—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by using pressure rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/006—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of flat products, e.g. sheets
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
Abstract
A method of making titanium flat mill products by feeding titanium powder of blended particle sizes selected from and ranging between 5 - 1000μm onto aligned rollers having a diameter of between 100-500 times the thickness of the flat mill product or flat mill products that are approximately 1% thickness of the roll diameter used at a rate of between 10-50 g per second. The rolled product can be sintered in a vacuum or an inert atmosphere at a temperature in the range 1100-1500 0C for 1-5 hours. The titanium can comprise one or more of TiH2, hydrogenated-dehydrogenated titanium and Ti sponge fines.
Description
This invention relates to a method for producing titanium mill products by direct powder rolling of titanium.
Background to the invention
The inventor is aware of direct powder rolling of a mixture of titanium powder with other metal powders to produce mill products of titanium alloys. However, successful direct powder milling of pure titanium powder has not been described or accomplished based on the technique described in this description ofthe invention.
It is an object of the invention to produce Grades 1 to 4 flat titanium mill products using direct powder rolling methods. Such methods are significantly more cost effective than known conventional ingot metallurgy based methods.
General description ofthe invention
According to the invention there is provided a method for the production of titanium flat mill products, which method includes the steps of:
feeding titanium powder of blended particle sizes selected from and ranging between 5pm and 1000pm but preferable using the -45pm and -150pm onto aligned rollers having a diameter of between 100 to 500 times the thickness ofthe flat mill product or flat mill products that are approximately 1% thickness of the roll diameter used at a rate of between 10g and 50g per second; and optionally sintering the rolled product from the rollers in vacuum or in an inert atmosphere at temperatures ranging between 1100°C and 1500°C for 1 to 5 hours but preferably sintering at 1300 for 3hrs.
Apart from a range or blend of particle sizes to be used, a blend of particle morphologies can also be used, including one or more of T1H2, TiHDH, and Ti sponges fines.
Detailed description of the invention
The invention is now described by way of example with reference to the accompanying photographs and drawings.
Figure 1 shows a photograph of a first example of a direct powder rolled product, in accordance with the invention; and
Figure 2 shows a photograph of a second example of a direct powder rolled product, in accordance with the invention.
Example 1
Production of the titanium flat mill product as shown in Figure 1.
TiHDH -45um powder with a particle size distribution of 5 to 75um were feed on an 170mm horizontally aligned roll at a 10g/s feed rate. Sintering was done at 1300 for 3hrs in a vaccum furnace to achieve: density 99%, hardness 265HV5kg, UTS>550MPa, Elongation 8-15%, Yield strength >450MPa’ Oxygen 0.39%.
Example 2
Production of the titanium flat mill product as shown in Figure 2.
TiHDH -150um powder with a particle size distribution of 10 to 200um were feed on an 170mm horizontally aligned roll at a 10g/s feed rate resulting. Sintering was done at 1400 for 3hrs in a vaccum furnace to achieve: density 95%, hardness 300HV5kg, UTS>500MPa, Elongation 10-18%, Yield strength >400MPa’ Oxygen 0.30%.
It shall be understood that the examples are provided for illustrating the invention further and to assist a person skilled in the art with understanding the invention and are not meant to be construed as unduly limiting the reasonable scope of the invention.
Claims (3)
1. A method for the production of titanium flat mill products, which method includes the step of:
feeding titanium powder of blended particle sizes selected from and ranging between 5pm and 1000pm but preferable using the -45pm and -150pm onto aligned rollers having a diameter of between 100 to 500 times the thickness of the flat mill product or flat mill products that are approximately 1% thickness of the roll diameter used at a rate of between 10g and 50g per second.
2. A method as claimed in Claim 1, which includes the further step of sintering the rolled product from the rollers in vacuum or in an inert atmosphere at temperatures ranging between 1100°C and 1500°C for 1 to 5 hours.
3. A method as claimed in Claim 1 or Claim 2, wherein a blend of particle morphologies is used, including one or more of T1H2, TiHDH, and Ti sponges fines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1716179.5A GB2567166A (en) | 2017-10-04 | 2017-10-04 | Direct powder rolling of titanium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1716179.5A GB2567166A (en) | 2017-10-04 | 2017-10-04 | Direct powder rolling of titanium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB201716179D0 GB201716179D0 (en) | 2017-11-15 |
| GB2567166A true GB2567166A (en) | 2019-04-10 |
Family
ID=60270236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1716179.5A Withdrawn GB2567166A (en) | 2017-10-04 | 2017-10-04 | Direct powder rolling of titanium |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2567166A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109604617A (en) * | 2018-12-20 | 2019-04-12 | 南方科技大学 | Spherical titanium powder, preparation method thereof and 3D printing product |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4534935A (en) * | 1983-03-16 | 1985-08-13 | Inco Limited | Manufacturing of titanium anode substrates |
| US20100183470A1 (en) * | 2007-04-04 | 2010-07-22 | Nigel Austin Stone | Titanium flat product production |
-
2017
- 2017-10-04 GB GB1716179.5A patent/GB2567166A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4534935A (en) * | 1983-03-16 | 1985-08-13 | Inco Limited | Manufacturing of titanium anode substrates |
| US20100183470A1 (en) * | 2007-04-04 | 2010-07-22 | Nigel Austin Stone | Titanium flat product production |
Non-Patent Citations (4)
| Title |
|---|
| JC Williams, "Titanium and titanium alloys. Scientific and technological aspects, Proceedings of the third international conference on titanium", Pub. 1982, pp. 2337-2344, Vol. 3, VG Khromov, "Rolling of titanium powder and its alloys" * |
| Powder Metallurgy and Metal Ceramics, Vol. 48, Nos. 11-12, 2009, KA Gogaev, "Mechanical Properties of powder titanium at different production stages. V. Properties of a titanium strip produced by powder rolling", pp. 652-658 * |
| Powder Technology, Vol. 264, 2014, S Chikosha, "Effect of particle morphology and size on roll compaction of Ti-based powders", pp. 310-319 * |
| Surface Review and Letters, Vol. 17, No. 2, 2010, JK Hong, "Ti strip properties fabricated by powder rolling method", pp. 229-234 * |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201716179D0 (en) | 2017-11-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |