GB615731A - Improvements in or relating to abrasive articles - Google Patents
Improvements in or relating to abrasive articlesInfo
- Publication number
- GB615731A GB615731A GB2723045A GB2723045A GB615731A GB 615731 A GB615731 A GB 615731A GB 2723045 A GB2723045 A GB 2723045A GB 2723045 A GB2723045 A GB 2723045A GB 615731 A GB615731 A GB 615731A
- Authority
- GB
- United Kingdom
- Prior art keywords
- metal
- powder
- per cent
- diamond
- bond
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
- B24D3/342—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties incorporated in the bonding agent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
- B24D3/04—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic
- B24D3/06—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements
- B24D3/08—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements for close-grained structure, e.g. using metal with low melting point
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
In an abrasive article, e.g. a grinding or lapping wheel, in which diamond particles are bonded in a sintered metal or alloy, smearing of the bond metal over the diamonds, and welding of particles abraded from the work piece, to the bond, are prevented by adding one or more of graphite, talc, soapstone, slate and molybdenum sulphide to the bond metal powder. The metal bond may include copper, bronze, brass, zinc, nickel, iron, the substance known under the Registered Trade Mark "Monel Metal" and hard metals such as tungsten carbide. The diamond particles may be coated by a metal film as described in Specification 614,396, [Group XXII], prior to being mixed with the metal powder and the graphite &c. powder, and pressed in a die with or without heat. The diamond-containing powder may be pressed with a layer of metal powder containing no diamonds, the whole then being sintered. A backing of metal or plastic can be attached by known methods, or the backing may be formed of pressed metal powders. As an example, a bronze powder (10 per cent tin) or an equivalent amount of powdered copper and tin, is added to 2 to 3 per cent (not more than 5 per cent) by weight of powdered graphite and 15 to 40 per cent (not more than 60 per cent) by volume of diamond powder. The mixture is spread evenly on the bottom of a steel die set, and is covered with a thicker layer of bronze powder containing no abrasive, but containing an inert material so that the shrinkage of the layer is decreased to that of the diamond-containing layer, thereby avoiding distortion during sintering. Alternately the composition of the metal powder can be chosen to obtain the correct shrinkage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2723045A GB615731A (en) | 1945-10-17 | 1945-10-17 | Improvements in or relating to abrasive articles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2723045A GB615731A (en) | 1945-10-17 | 1945-10-17 | Improvements in or relating to abrasive articles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB615731A true GB615731A (en) | 1949-01-11 |
Family
ID=10256228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2723045A Expired GB615731A (en) | 1945-10-17 | 1945-10-17 | Improvements in or relating to abrasive articles |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB615731A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0071022A2 (en) * | 1981-07-24 | 1983-02-09 | Norton Company | Grinding wheel |
| CN114103302A (en) * | 2020-08-25 | 2022-03-01 | 华为技术有限公司 | Electronic equipment, rotating shaft, layered composite material and manufacturing method thereof |
-
1945
- 1945-10-17 GB GB2723045A patent/GB615731A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0071022A2 (en) * | 1981-07-24 | 1983-02-09 | Norton Company | Grinding wheel |
| EP0071022A3 (en) * | 1981-07-24 | 1984-05-23 | Norton Company | Grinding wheel |
| CN114103302A (en) * | 2020-08-25 | 2022-03-01 | 华为技术有限公司 | Electronic equipment, rotating shaft, layered composite material and manufacturing method thereof |
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