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Lubricant for metallic material working and a method of press working a metallic material

A metal material and lubricant technology, applied in the directions of additives, lubricating compositions, petroleum industry, etc., can solve problems such as inability to provide lubricity, and achieve the effects of prolonging life, reducing friction, and improving machining accuracy

Active Publication Date: 2008-04-02
TOYOTA BOSHOKU KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these lubricants have a problem in that they do not provide any satisfactory lubricity for any press processing with high difficulty such as precision shearing.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0073] Next, specific examples of the lubricant for metal material processing and the method of press-working the metal material according to the present invention will be described. However, the present invention is not limited to the following Examples.

[0074] First, Lubricants 1 to 8, each having a composition shown in Table 1, were prepared using the following base oils and various additives.

[0075] (base oil)

[0076] Base oil 1: paraffinic mineral oil (dynamic viscosity at 40°C is 450mm 2 / s)

[0077] Base oil 2: naphthenic mineral oil (dynamic viscosity at 40°C is 46mm 2 / s)

[0078] Base oil 3: paraffinic mineral oil (dynamic viscosity at 40°C is 10mm 2 / s)

[0079] (a) Sulfur-based UHV reagent

[0080] a1: polysulfide (sulfur content: 37% by weight)

[0081] a2: polysulfide (sulfur content: 32% by weight)

[0082] a3: sulfurized fat or oil (sulfur content 15% by weight)

[0083] a4: Sulfurized fat or oil (sulfur content 11% by weight)

[0084] (b) Organoz...

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PUM

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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.

Description

technical field [0001] The invention relates to a lubricant for metal material processing and a method for pressure processing the metal material. Background technique [0002] Many methods are known as press working methods for metal materials, such as punching, half punching, bending and deburring. When press working a metallic material, a lubricant is added between the metallic material (ie, the material to be machined) and the die assembly. Lubricants prevent heat from friction between the metal material and the die assembly, and prevent burrs from forming on the machined surface. Another purpose of adding the lubricant is to improve the machining accuracy of the machined product and prolong the life of the die assembly, which includes the die and the punch. [0003] Chlorine-based lubricants are often used as lubricants when press-working metallic materials. However, one problem that has been noted with chlorine-based lubricants is rusting of the material being machi...

Claims

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Application Information

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IPC IPC(8): C10M163/00C10M141/10C10M169/04
Inventor 加藤麻美榊原正己深谷辉雄宫坂四志男
Owner TOYOTA BOSHOKU KK
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