Lubricant for thread rolling and thread rolling method

a technology of thread rolling and lubricant, which is applied in the field of lubricants, can solve the problems of rusting a material or a tool, complicated step of removing the chip, and decomposition of chlorine species additive components, and achieves the effects of low elongation, high hardness and easy dissolution to oils
US20090156447A1Inactive Publication Date: 2009-06-18TOYOTA BOSHOKU KK
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
TOYOTA BOSHOKU KK
Publication Date
2009-06-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

A thread rolling lubricant of a nonchlorine species, in which a lubricant base oil is blended with 25 through 35 weight % of (A) a sulfur species extreme pressure agent, 6 through 16 weight % of (B) an organic zinc compound, 2 through 12 weight % of (C) a calcium species additive, and 2 through 13 weight % of (D) an oiliness agent for carrying out thread rolling.
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Description

[0001] This application claims priority to Japanese patent application serial number 2007-324549, the contents of which are incorporated herein by reference.BACKGROUND OF THE INVENTION

[0002] 1. Field of the Invention

[0003] The present invention relates to a lubricant blended preferably for thread rolling and a thread rolling method using the same.

[0004] 2. Description of Related Art

[0005] A screw thread can be formed by machining on a comparatively large-sized metal material of an insert nut arranged at, for example, an oil filter of an automobile or the like. However, in machining, a cutting chip is produced, and a step of removing the chip is complicated. In contrast thereto, in a case of thread rolling, a fabrication cost is low in comparison with that of machining and also the cutting chip is not produced. A strength of a rolled thread is higher than that of a cut screw. Therefore, a member forming a screw thread by machining is desired to shift to thread rolling.

[0006] When a metal m...

Claims

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