The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 05, 2013
Filed:
Mar. 13, 2006
Mami Kato, Kariya, JP;
Masami Sakakibara, Kariya, JP;
Teruo Fukaya, Kariya, JP;
Yoshio Miyasaka, Nagoya, JP;
Mami Kato, Kariya, JP;
Masami Sakakibara, Kariya, JP;
Teruo Fukaya, Kariya, JP;
Yoshio Miyasaka, Nagoya, JP;
Toyota Boshoku Kabushiki Kaisha, Aichi, JP;
Abstract
To provide a lubricant for metallic material working and a method of press working a metallic material that makes it possible to improve the working accuracy of a press worked product and prolong the life of the die assembly beyond prior levels of life. [Solution] A lubricant for metallic material working comprises a mixture of a sulfur-based extreme pressure agent, an organic zinc compound, a calcium-based additive, and an ester compound, with lubricant base oil. The sulfur-based extreme pressure agent has a sulfur content of 5% by weight or higher based on the total weight of the lubricant. The organic zinc compound has a zinc content of 0.5% by weight or higher based on the total weight of the lubricant. The calcium-based additive has a calcium content of 0.5% by weight or higher based on the total weight of the lubricant. And the ester compound occupies a content of 1.0% by weight or higher based on the total weight of the lubricant. Additionally, the solution includes a method of press working a metallic material that employs such a lubricant.