Compositions – Electrolytes for electrical devices
Patent
1985-01-25
1985-11-19
Garvin, Patrick P.
Compositions
Electrolytes for electrical devices
252 493, C10M 304, C10M 338
Patent
active
045540870
DESCRIPTION:
BRIEF SUMMARY
DESCRIPTION
1. Technical Field
The present invention relates to a metal processing composition. More particularly, the present invention relates to a lubricant to be used for rolling, drawing, cutting and grinding of metals.
2. Background Art
Lubricants customarily used for mechanical processing of metals such as rolling, drawing, cutting and grinding are compositions comprising an animal, vegetable or mineral oil as the base oil, a fatty acid or alcohol as an oiliness agent, an organophosphorus or organochlorine compound as the extreme pressure agent and, if required, an emulsifier. The compositions are designed so that the respective ingredients exert a lubricating effect under varying friction conditions produced between a tool and the metal to be processed. Of the above-mentioned ingredients, the oiliness agent has a great influence on the lubricating capacity. As the oiliness agent, fatty acids having about 8 to about 20 carbon atoms, and dimer acids and salts thereof, have been used. In metal processing, such a fatty acid reacts with the metal of the tool and the surfaces of the material to be processed, and is tightly absorbed and arranged on the metal surfaces to exert a good lubricating effect. Accordingly, fatty acids have been used in large quantities. However, the fatty acid naturally reacts with the ground metal powder formed in the processing to form a metal soap, with the result that the fatty acid tends to escape from the lubricating composition. Accordingly, the lubricating capacity changes over time and the stability of the operation is degraded. Moreover, the formed metal soap reduces the stability of the lubricating composition, thus eventually rendering it unusable. In addition, the fatty acid is partially deteriorated by the heat or shearing force generated during metal processing, and therefore, the suspended oil component is degraded and the formed article and processing machine are drastically contaminated, so that cleaning the formed articles and processing machines is highly expensive. In order to obviate these problems caused by the use of a fatty acid type oiliness agent, lubricating compositions are exchanged frequently. At the present, since improvements in processing efficiency, precision and economy are eagerly sought, development of a novel lubricant is strongly desired.
Japanese Patent Laid-Open Publication No. 56-4696 discloses as an additive to a lubricant a compound represented by the following general formula:
wherein R.sup.1 stands for an aliphatic hydrocarbon group having about 4 to about 100 carbon atoms, R.sup.2 stands for an ethylene group, a trimethylene group, a lower alkyl-substituted ethylene group or a lower alkyl-substituted trimethylene group, Ar.sup.1 stands for an aromatic group, and x is an integer of from 1 to 15. When the compound represented by the above general formula is added to a lubricant to be used for rolling, forgoing, hot pressing, blanking, bending, drawing, stretching, cutting, punching or spinning of metals, it serves to improve the rust resistance and extremepressure property of the lubricant.
Japanese Patent Laid-Open Publication No. 56-127690 discloses a phosphate ether having a pH value of 7.5 to 10.5, which is represented by the following general formula: ##STR1## wherein R stands for a hydrocarbon group having 6 to 24 carbon atoms, n is an integer of from 1 to 4, and M stands for a hydrogen atom or a monovalent cation. This compound is used as an additive to an aqueous lubricant composition, and this lubricant composition is used, in turn, for the metal processing. If a lubricant composition containing the above-mentioned phosphate ether is used, the processing speed is increased the life of the processing tool can be prolonged, and a temporary anticorrosive protection is given to the metal to be processed.
Japanese Patent Laid-Open Publication No. 56-24494 discloses a polyamide obtained by reacting at least one compound selected from the group consisting of (A) an aliphatic carboxylic or polycarboxylic acid having at least 12 carb
REFERENCES:
patent: 3775323 (1973-11-01), Dubourg
patent: 3788988 (1974-01-01), Dubourg
Chiba Iwane
Fujiwara Junji
izushi Tomoya
Kuwamoto Hiroshi
Muto Toshimi
Garvin Patrick P.
Nippon Kokan Kabushiki Kaisha
Yushiro Chemical Industry Co., Ltd.
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