Environment-friendly vacuum quenching oil and preparation method thereof
The invention discloses environment-friendly vacuum quenching oil and a preparation method thereof. The environment-friendly vacuum quenching oil is prepared from the following raw materials in parts by weight: 72-88.7 parts of base oil, 1-5 parts of polyisobutylene succinimide, 1-5 parts of petrole...
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Format: | Patent |
Sprache: | chi ; eng |
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