JPH04110483A - Method for washing parts with water-soluble detergent - Google Patents

Abstract

PURPOSE:To produce a washing effect comparable ton the effect of the conventional washing method without using an org. solvent such as chlorofluorocarbon, an alcoholic solvent, etc., by removing water sticking to washed and rinsed parts with an oily dewatering agent and drying the parts. CONSTITUTION:Oil and rust preventing oil sticking to bearing parts 3 are removed in a rough washing process (a), a precision washing process (b) and a finish washing process (c). A washing liq. sticking to the parts 3 in the washing process (c) is removed in a rough rinsing process (a) and a finish rinsing process (b). Water sticking to the parts 3 in the rinsing process (b) is removed in a rough dewatering process (a) and a finish dewatering process (b). A dewatering agent sticking to the parts 3 in the dewatering process (b) is vacuum- dried or dried by heating the parts 3 at a temp. below the flash point of the dewatering agent. The parts 3 are then immersed in a rust preventing liq. for a prescribed time and the liq. is dried.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for cleaning bearing parts and the like using a water-soluble detergent.

[Conventional technology]

Conventional parts cleaning methods using water-soluble detergents remove water that adheres to parts during the rinsing process using alcohol solvents or mixed solvents made by mixing Freon (or 1-1-1 trichloroethane) with a surfactant. It was removed using.

[Problem to be solved by the invention]

In recent years, from the standpoint of "environmental protection," regulations on the use of fluorinated solvents such as fluorocarbons and chlorinated solvents such as trichloroethane have been strengthened. In particular, because fluorocarbons have the effect of destroying the ozone layer in the stratosphere, there is a trend toward regulating their use on a worldwide scale. Furthermore, alcohol solvents have a low flash point and are highly dangerous as a cause of fires, explosions, and the like.

Under these circumstances, the time has come to reconsider conventional parts cleaning methods using alcohol solvents, chlorofluorocarbons, and the like.

Therefore, an object of the present invention is to provide a highly safe parts cleaning method that can obtain the same cleaning effect as conventional parts cleaning methods without using problematic organic solvents such as fluorocarbons. It is in.

[Means to solve the problem]

The parts cleaning method according to the present invention consists of the steps shown below.

(A) A cleaning process in which parts are washed with a water-soluble detergent. (B) A rinsing process in which the water-soluble detergent adhering to the parts is rinsed with water containing a rust preventive agent. (D) A drying process in which the oil-based draining agent adhering to the parts is dried. (E) A rust-preventing process in which a rust preventive is applied to the parts and the applied rust preventive is further dried. Rust Process [Function] After the cleaning and rinsing processes have been completed, the parts are subjected to a drying process after the adhering moisture is removed using an oil-based draining agent.

Freon and alcohol solvents can be removed by natural drying because their boiling points are extremely low, but in the case of oil-based draining agents, it takes some time to remove them by natural drying, so a drying process is required to shorten the cleaning time. I did it like that. Although this requires a slight increase in the number of steps compared to conventional cleaning methods, when considering issues such as environmental pollution and safety, the effect of eliminating the need for fluorocarbons and the like is significant.

(Example) Hereinafter, examples of the present invention will be sequentially described based on the flowchart I- shown in FIG. 1A and FIG. 1B.

(Δ) Cleaning process This process is divided into a rough cleaning process (a), a precision cleaning process (b), and a final cleaning process (C) for the purpose of removing oil and anti-rust oil attached to parts. Note that a water-soluble detergent is used as the cleaning agent.

<a> Rough cleaning process The bearing parts (3) are immersed in the cleaning agent (2) placed in the cleaning tank (1), and the bearing parts (3) are cleaned for a predetermined period of time while swinging the liquid level downward. In the middle of the process, the bearing part (3) is turned over by a degree to ensure thorough cleaning.

(1) Precision cleaning process Bearing parts (3) are cleaned in an ultrasonic cleaning tank containing cleaning agent (2) (
5), and wash for a predetermined period of time while shaking in the solution. Note that the bearing component (3) is turned over by - degree during the process.

(C) Final cleaning process The bearing component (3) is transferred to a shower tank (6) and is showered with a cleaning agent from above for a predetermined period of time.

Also in this case, the bearing component (3) is turned over by - degree during the process.

(B) Rinsing process This process aims to remove the cleaning liquid that adhered to the parts in the cleaning process (A), including the rough rinsing process (a), the final rinsing process (
It is divided into b). (a) Rough rinsing process Water dripped with a rust preventive agent is used as the rinsing liquid. In the rinsing liquid (8) placed in the ultrasonic cleaning tank (7), the bearing parts (3) are swung to a predetermined position. Rinse for an hour.

(b) Finishing process Bearing parts (3) are reversed and placed in another ultrasonic cleaning tank (9)
, and repeat the same process as above to completely remove the cleaning agent.

(C) Draining process This process aims to remove the water that adhered to the parts in the rinsing process (B), and includes a rough draining process (a), a finishing draining process (
It is divided into b). As the draining agent, an oil-based draining agent based on white kerosene or a paraffin solvent with good drying properties is used.

(a) Rough draining process Bearing parts (3) are placed in a liquid tank (11) containing a draining agent (10).
) and drain for a predetermined period of time while shaking the liquid level up and down. Water accumulates on the lower surface of the liquid tank (11) due to specific gravity separation.

(b) Finishing draining process The bearing component (3) is turned over and transferred to another liquid tank (12), and the same process as above is performed to completely remove moisture.

(D) Drying process The purpose of this process is to dry the draining agent attached in the draining process (B). As a drying method, use a draining agent (10
) or vacuum drying, etc., is used to heat the bearing part (3) below the flash point temperature of the bearing part (3).

(E) Rust prevention process This process aims to prevent rust from occurring after parts have been cleaned. In this step, the same treatment as the draining step (C) and the drying step (D) is performed using a rust preventive liquid in which a petroleum solvent is mixed with a rust preventive oil. That is, after the bearing component is immersed in the rust preventive liquid for a predetermined period of time, the rust preventive liquid is dried.

[Effects of the Invention] According to the present invention, cleaning can be carried out in the same way as conventional cleaning methods without using organic solvents such as chlorofluorocarbons, which are problematic in terms of environmental protection, or alcoholic solvents, which have a high risk of explosion. effect can be obtained.

Furthermore, since the rust prevention treatment is performed after cleaning the parts, the rust prevention effect is higher than that of conventional products, which is also advantageous in terms of product quality control.

[Brief explanation of drawings]

FIGS. 1A and 1B are flowcharts of a parts cleaning method according to the present invention. 8-Washing process B-Rinsing process C-・-Draining process D-Drying process E-・-Rust prevention process 2-Water-soluble detergent 8-Rinse liquid 3-Bearing parts 10-Draining agent

Claims (1)

[Claims] (1) A cleaning process in which parts are cleaned with a water-soluble detergent, a rinsing process in which the water-soluble detergent that has adhered to the parts during the cleaning process is rinsed away with water containing an anti-rust agent, and water that has adhered to the parts during the rinsing process. There is a draining process in which the oil is removed using an oil-based draining agent that has rust prevention properties and a high flash point, a drying process that dries the oil-based draining agent that adhered to the parts during the draining process, and a rust preventive agent is applied to the parts after the drying process. A method for cleaning parts using a water-soluble detergent, which includes applying a rust preventive agent and drying the applied rust preventive agent.