GB774813A - Molded abrasive articles and method for producing them - Google Patents
Molded abrasive articles and method for producing themInfo
- Publication number
- GB774813A GB774813A GB26868/54A GB2686854A GB774813A GB 774813 A GB774813 A GB 774813A GB 26868/54 A GB26868/54 A GB 26868/54A GB 2686854 A GB2686854 A GB 2686854A GB 774813 A GB774813 A GB 774813A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filler
- phenol
- resin
- grit
- condensates
- 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
- B24D3/344—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 the bonding agent being organic
-
- 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
- B24D3/20—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 organic
- B24D3/28—Resins or natural or synthetic macromolecular compounds
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
- E04C2/16—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products of fibres, chips, vegetable stems, or the like
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
In making a moulded abrasive product, such as a grinding-wheel or disc, an abrasive grit is wetted with a liquid heat-hardenable phenol-aldehyde resin by mixing it therewith, the wetted grit is then mixed with a chopped rag filler and, as bonding resin, a heat-hardenable synthetic resin precondensate or with a chopped rag filler impregnated with the precondensate, and the mixture is subjected to a hot pressing operation in a mould cavity. Liquid condensates specified are the A-stage condensates of phenol or cresol with formaldehyde or acetaldehyde. Bonding resins specified are the above liquid-condensates, condensates of furfural per se, furfural with phenol, urea and/or thiourea with formaldehyde, glycerol with phthalic acid unmodified or modified with amine-aldehyde resins; cresylic acid-modified phenol-formaldehyde and aniline-formaldehyde resins; condensates of melamine, 2,4,6-triethyl- and triphenyl-triamino 1,3,5-triazines, 2,4,6-trihydrazo-1,3,5-triazine, melam, and melam with formaldehyde; and any mixture of the above resins. The filler is preferably cellulosic, e.g. cotton or regenerated cellulose. Other fillers, e.g. clay, asbestos fibres, glass particles or fibres, mica, mineral wool, cotton fibres or other natural or vegetable fibres, may be added. Abrasive grits specified are alumina, emery, corundum, dense regular fused alumina, porous white alumina, silicon carbide, quartz, glass, garnet and diamonds, or any mixture thereof. The bonding resin and filler may be added separately in any order or simultaneously to the wetted grit; preferably the rag filler is impregnated with the resin, dried and disintegrated. In general the product may contain 50 to 85 per cent grit, 12 1/2 to 25 per cent of heat-hardened resin, 1/5 of which is the phenolic resin used for wetting the grit, and 2 1/2 to 25 per cent filler, at least 9/10 of which is the chopped rag filler. Mould lubricants, dyes, pigments and inorganic cements may also be added in amount up to 10 parts per 100 parts of the moulded product. The moulding may be faced with layers of fabric, e.g. heavy canvas or duck and/or be reinforced with one or more such layers disposed within the body of the moulding so as to produce a laminated product. In a disc or wheel used for grinding weld beads, the back is faced with an aminotriazine-impregnated fabric and the front with a phenol-aldehyde-impregnated fabric, whereas in the cutting type of wheel both fabric facings are impregnated with phenol-aldehyde resins. The fabric used for facings or reinforcement may be made of glass, cotton, nylon or burlap. Examples are given.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US1114529XA | 1953-11-12 | 1953-11-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB774813A true GB774813A (en) | 1957-05-15 |
Family
ID=22338640
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB26868/54A Expired GB774813A (en) | 1953-11-12 | 1954-09-16 | Molded abrasive articles and method for producing them |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR1114529A (en) |
GB (1) | GB774813A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2332162B (en) * | 1997-12-12 | 2002-09-18 | Simon Henry Jordan | Grinding disc |
CN103846821A (en) * | 2014-02-11 | 2014-06-11 | 当涂县南方红月磨具磨料有限公司 | Toughened wearable brown aluminium oxide grinding wheel |
-
1954
- 1954-09-16 GB GB26868/54A patent/GB774813A/en not_active Expired
- 1954-11-09 FR FR1114529D patent/FR1114529A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2332162B (en) * | 1997-12-12 | 2002-09-18 | Simon Henry Jordan | Grinding disc |
CN103846821A (en) * | 2014-02-11 | 2014-06-11 | 当涂县南方红月磨具磨料有限公司 | Toughened wearable brown aluminium oxide grinding wheel |
Also Published As
Publication number | Publication date |
---|---|
FR1114529A (en) | 1956-04-13 |
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