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US 11,492,568 B2Granted
Composition of internal lubricant for cold pilgering
AssigneesKepco Nuclear Fuel Co., Ltd., Shl Co., Ltd.
InventorsMin Young Park, Sang Jin Han, Ki Bum Park, Jung Woo Cha, Duk Hee Lee, Kyung Tae Kim, Pyeong Mo Yeo, Jeong Jin Jang, Sang Soon Choi
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Abstract
Disclosed is a composition of a lubricant for cold pilgering of zirconium alloy tubes. More particularly, disclosed is a composition of an internal lubricant for cold pilgering of a zirconium alloy cladding tube, the composition exhibiting excellent lubricity and decomposition against microbes.
Claims9
A composition of a lubricant for cold pilgering of zirconium alloy cladding tubes, the composition comprising:
- water in an amount of about 76% to about 78%;
- a base oil;
- a lubricity enhancer;
- an anti-wear agent in an amount of 1.4 to 1.8% by weight, the anti-wear agent comprising benzenesulfonic acid;
- and
- an anti-decomposition agent in an amount of 0.8 to 1.2% by weight, the anti-decomposition agent comprising at least one selected from 1,2-benzisothiazolin-3-one, potassium hydroxide, sodium hydroxide, ethylene glycol, and dihydrogen oxide,
- wherein the composition comprises from 1.0 to 1.4% by weight of lubricity enhancer and wherein the lubricity enhancer is a vegetable wax.
4 more elements
Dependencies are inferred from the claim text.