JP2005255970A - Lubricant for use in anti-friction - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a lubricant to be able to improve the lubricating properties for coating and lubricating a vegetable lubricant containing a proper amount of a lipid on the surfaces of rubbing materials each other, while materials such as a metal are rubbed each other, without using a conventional lubricant such as a mineral oil or a cetanol on the surfaces of the materials. <P>SOLUTION: A satisfactory work is made possible with good coating adhesion and less seizure compared to a prior method by applying and drying a suspension containing the vegetable lubricant containing the proper amount of the lipid as a main component instead of using the conventional lubricant on the surface of the materials to reduce seizure, while materials are rubbed each other. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

Detailed Description of the Invention

  In the present invention, when a material such as a metal rubs against each other, a plant containing an appropriate amount of lipid is used instead of a conventional lubricant such as mineral oil or cetanol on the surface of the material. The present invention relates to a lubricant that can be applied to the surfaces of materials that rub against each other and lubricate to improve lubricity. By using this lubricant, for example, the press formability of a thin plate can be improved, or the antifriction effect when tightening bolts and nuts can be improved, and problems such as seizure can be solved.

  Conventionally, when materials such as metal materials rub against each other, for example, when pressing a thin plate, tightening a bolt or nut, or reducing the surface of a wire, between the two materials In many cases, it is difficult to perform good work without a lubricant. In such a case, in the conventional work process, the surface of the material is coated with mineral oil or higher alcohol cetanol as a lubricant to reduce the friction.

Problems to be solved by the invention

  These conventionally used lubricants are not well formed or sufficiently tightened, especially in the press work of thin titanium-based materials or the tightening work of bolts and nuts because of high friction. In the work, there are many problems. In addition, since the members thus produced have various uses and are often used as important parts, the surface properties of thin plate materials or bolts must be good.

Means for solving the problem

  In the present invention, as a result of various studies to solve the above-mentioned problems when the materials rub against each other, a vegetable lubricant containing an appropriate amount of lipid is applied to the surface of the material instead of the conventional lubricant. The present invention was completed by finding that it was dried, and also had good adhesion at that time and showed very good lubricating performance.

  The present invention relates to a vegetable lubricant containing an appropriate amount of lipid as a lubricant when the materials are rubbed with each other. That is, the present invention relates to a lubricant that is used by applying a vegetable lubricant containing an appropriate amount of lipid as a lubricant as a suspension and applying and drying it on the surfaces of materials that rub against each other.

  In the present invention, materials that rub against each other are titanium-based, stainless-based, other steel, aluminum-based, copper-based, or non-metallic materials, and the shape of the material is not specified. The vegetable lubricant containing a lipid used in the present invention is a powder containing a lipid and containing other proteins and carbohydrates as main components, and is used as a suspension mixed with a solvent. This is applied to the surfaces of materials that rub against each other and dried. Adhesion after application is also good.

  The proper composition of the lubricant in the present invention is preferably 20% or more of lipid, and if it exceeds 50%, the effect is saturated and it is not preferable to contain more. Therefore, the proper content of lipid in the lubricant is 20% and above, and 50% and below. This vegetable lubricant is used as a suspension containing 10% and above, and 35% and below. The solvent at this time may be water or the like and is not particularly limited.

  The amount of application when the agent of the present invention is applied to the material surface as a lubricant is not particularly limited, but for example, the thickness is preferably about 2 μm or more and 10 μm or less. If it is less than this, it may peel off during processing, and even if it is larger than this, the lubrication effect will be saturated, and for example, the distance between both materials at the initial tightening of bolts and nuts will be increased, making work difficult. This is not preferable.

  The treatment after application can be used as it is at the time of processing in the case of processing immediately after application according to the situation at that time, or in the so-called lubricant coating type that is applied to both surfaces in advance and dried. Any of these cases may be used. In the latter case, adhesion of the lubricant is necessary, but the lubricant of the present invention has good adhesion.

  In the present invention, when the materials rub against each other, a vegetable lubricant containing an appropriate amount of lipid is applied as a suspension to a lubricant used by applying to the surfaces of both materials, or dried thereafter. The lubricant to be used is provided.

  When the materials rub against each other, they are applied between the materials as a suspension with water containing the vegetable lubricant of the present invention in the range of 19% to 51% and 9% to 36% and dried. (Thickness of about 4 μm), and its friction coefficient (dynamic friction coefficient) was measured. The results are shown in Table 1. As can be seen from this result, when the suspension containing 20% to 50% lipid and 10% to 35% lipid is applied to the material surface and dried, the coefficient of friction is significantly reduced. It can be seen that excellent lubricity is exhibited.

  Table 2 shows the results of the Eriksen (Er) test conducted on titanium, stainless steel, and aluminum thin plates, each of which was coated and dried (thickness of about 5 μm) under the conditions of the present invention. In any case, when the lubricant in the range of the present invention is used, a high Er value is exhibited.

  As an example in which the materials rub against each other, a case of tightening bolts and nuts will be described. As an example of a method for evaluating the friction reduction of the bolt and nut material in this case, a screw portion tightening test was performed to measure the friction coefficient. Bolts and nuts are usually made of titanium, titanium alloy (Ti-6Al-4V alloy) bolts (screw diameter of 10 mm) and nuts corresponding to the bolts and nuts. A vegetable lubricant containing a lipid within the scope of the present invention was mixed with 10% and 20% in water as a solvent to form a suspension, which was coated with an average thickness of 5 μm and dried for testing. It was. The case of using a conventional cetanol-based lubricant was also compared. As a result, the results shown in Table 3 were obtained.

  As can be seen from this result, a suspension in which a vegetable lubricant containing 20% and more, 50% and less of lipid is mixed in a range of 10% and more, 35% and less, is applied. It can be seen that the dried product exhibits appropriate adhesion and extremely low coefficient of friction, and good lubricity is obtained.

  Since this invention is comprised as mentioned above, there exists an effect as described below.

〔記号の説明〕
潤滑性： ○従来値より良好 △従来値並

When the materials rub against each other, as in the present invention, when a vegetable lubricant containing an appropriate amount of lipid is applied to the surface of the material as a suspension pad and dried, problems such as seizure between the materials are also eliminated. And can be used as a good lubricant.

[Explanation of symbols]
Lubricity: ○ Better than conventional value △ Same as conventional value

Claims (4)

    A vegetable lubricant containing 20% and more, 50% and less of a lipid as a lubricant for antifriction when the materials rub against each other.     A lubricant which is applied to the surface of the material as a suspension containing 10% or more, 35% or less, or dried after that.     A lubricant which is used by applying the lubricant according to claim 2 to the surface of a sheet material for press molding or drying it thereafter.     A lubricant used by applying the lubricant according to claim 2 to the surface of a bolt or nut, or drying it afterwards.