US1984841A - Agent for polishing, sharpening, and grinding articles of great hardness - Google Patents
Agent for polishing, sharpening, and grinding articles of great hardness Download PDFInfo
- Publication number
- US1984841A US1984841A US672808A US67280833A US1984841A US 1984841 A US1984841 A US 1984841A US 672808 A US672808 A US 672808A US 67280833 A US67280833 A US 67280833A US 1984841 A US1984841 A US 1984841A
- Authority
- US
- United States
- Prior art keywords
- agent
- polishing
- grinding
- sharpening
- great hardness
- 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 - Lifetime
Links
- 238000005498 polishing Methods 0.000 title description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- 235000019589 hardness Nutrition 0.000 description 6
- FRWYFWZENXDZMU-UHFFFAOYSA-N 2-iodoquinoline Chemical compound C1=CC=CC2=NC(I)=CC=C21 FRWYFWZENXDZMU-UHFFFAOYSA-N 0.000 description 4
- LTPBRCUWZOMYOC-UHFFFAOYSA-N beryllium oxide Inorganic materials O=[Be] LTPBRCUWZOMYOC-UHFFFAOYSA-N 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 229910052790 beryllium Inorganic materials 0.000 description 1
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
- B24D3/008—Abrasive bodies without external bonding agent
Definitions
- My invention relates to an agent for polishing, sharpening and grinding articles of great hardness, particularly hard alloys.
- Silicon carbide belongs to the class of the 5 hardest grinding materials extensively in use. It is employed, particularly in grinding the so-called hard alloys and metallic carbides which are known in the market under various names. The good grinding eilect as a result of the great hardness of the silicon carbide is, however, im-
- the crystals are united by means of an argillaceous binding agent, the strength or which is very slight as compared to the strength of the crystals.
- the crystals are easily pulled apart when machining very hard materials, and the structure is subjected to deterioration, thus causing not only a considerable wear of the grindstones but also reducing the grinding emciency to a minimum.
- the object of my present invention is, therefore, to employ as polishing and grinding agent for articles of great hardness the purest possible beryllium oxide sintered at a temperature above 1700 C.
- l Beryllium oxide has hitherto been employed chiefly in the manufacture of refractory crucibles.
- its adaptability as polishing and grinding agent for articles 0! great hardness has not been recognised heretofore.
- the use oi beryllium oxide in the iorm oi solid bodies such as grindstones and the like is of particular advantage.
- the particles of the beryllium'oxide maybeunitedbyamaterialwhichisalsosintered at a high temperature, such as aluminium oxide.
- a still-more compact structure is attained it only the pure particles 0! beryllium oxide are shaped, for instance with the aid of .1700 C., for instance,
- the bodies obtained in the above described manner may not only be utilized for grinding hard metallic alloys and similar materials but they also lend themselves to the grinding and polishing of articles consisting of sintered metallic oxides, for instance, highly sintered aluminium oxide, which owing to itsgreat hardness,
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Description
Patented Dec. 18, 1934 PATENT OFFICE AGENT FOR POLISHING, SHZLBPENING, AND
GRINDING ARTICLES OF GREAT HARD- NESS Reinhold Ieeiclunan'n, Berlin, Germany, I
to Siemens & m tion oi Germany aligns! Halske, Aktiengesellschalt. Siet, near Berlin, Germany, a m- No Drawing. Application May 25, 1933, Serial Germany No. 672,808. In
May 30, 1932 4 Claims. (C1. 51-219) My invention relates to an agent for polishing, sharpening and grinding articles of great hardness, particularly hard alloys.
Silicon carbide belongs to the class of the 5 hardest grinding materials extensively in use. It is employed, particularly in grinding the so-called hard alloys and metallic carbides which are known in the market under various names. The good grinding eilect as a result of the great hardness of the silicon carbide is, however, im-
paired due to the fact that the crystals are united by means of an argillaceous binding agent, the strength or which is very slight as compared to the strength of the crystals. The crystals are easily pulled apart when machining very hard materials, and the structure is subjected to deterioration, thus causing not only a considerable wear of the grindstones but also reducing the grinding emciency to a minimum.
The object of my present invention is, therefore, to employ as polishing and grinding agent for articles of great hardness the purest possible beryllium oxide sintered at a temperature above 1700 C. l Beryllium oxide has hitherto been employed chiefly in the manufacture of refractory crucibles. However, its adaptability as polishing and grinding agent for articles 0! great hardness has not been recognised heretofore. The use oi beryllium oxide in the iorm oi solid bodies such as grindstones and the like is of particular advantage. In this case the particles of the beryllium'oxide maybeunitedbyamaterialwhichisalsosintered at a high temperature, such as aluminium oxide. However, a still-more compact structure is attained it only the pure particles 0! beryllium oxide are shaped, for instance with the aid of .1700 C., for instance,
a moldable slip or by pressing and if the resulting bodies are sintered at a temperature above between 1900' C. and is continued 2000 C. II the sintering process for a sumciently long time at a high temperature the body is considerably. solidified by the coalescence oi the crystals.
The bodies obtained in the above described manner may not only be utilized for grinding hard metallic alloys and similar materials but they also lend themselves to the grinding and polishing of articles consisting of sintered metallic oxides, for instance, highly sintered aluminium oxide, which owing to itsgreat hardness,
could hardly be machined in the past. The agent,
however, may also be utilised in a pulverized form.
I claim: '1. An agent for polishing, sharpening and purity.
RIINHOLD an abrasive body of
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1984841X | 1932-05-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1984841A true US1984841A (en) | 1934-12-18 |
Family
ID=7885108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US672808A Expired - Lifetime US1984841A (en) | 1932-05-30 | 1933-05-25 | Agent for polishing, sharpening, and grinding articles of great hardness |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1984841A (en) |
-
1933
- 1933-05-25 US US672808A patent/US1984841A/en not_active Expired - Lifetime
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