JP2898071B2 - Parts cleaning method using water-soluble detergent - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for cleaning bearing parts and the like using a water-soluble detergent.

[Prior art] A conventional method for cleaning parts using a water-soluble detergent is a method in which water adhering to parts in a rinsing step of the cleaning agent is removed with an alcohol solvent,
Alternatively, it has been removed using a mixed solvent in which a surfactant is mixed in Freon (or 1.1.1 trichloroethane).

[Problems to be solved by the invention]

In recent years, from the viewpoint of environmental protection, regulations on the use of fluorine solvents such as chlorofluorocarbons and chlorine solvents such as trichloroethane have been tightened. In particular, CFCs have a tendency to deplete the ozone layer in the stratosphere, and there is a tendency to restrict their use on a global scale. In addition, alcohol solvents have a low flash point and are highly likely to cause fires, explosions, and the like.

Under such circumstances, it is time to reconsider the conventional component cleaning method using an alcohol solvent, Freon or the like.

Therefore, an object of the present invention is to provide a method for cleaning parts which can obtain a cleaning effect equivalent to that of the conventional parts cleaning method without using an organic solvent which is a problem such as chlorofluorocarbons and which is highly safe. It is in.

[Means for solving the problem]

The component cleaning method according to the present invention includes the following steps.

(A) Rinsing step for cleaning parts with water-soluble detergent (B) Rinsing step of water-soluble detergent attached to parts with water to which rust inhibitor has been added (C) Rust-proofing water attached to parts Draining step of removing with an oily draining agent having a high flash point. (D) Drying step of drying the oily draining agent attached to the part. (E) Applying a rust inhibitor to the part, and drying the applied rust inhibitor. Rust process [Function] After the washing process and the rinsing process, the components are subjected to a drying process after the adhering moisture is removed with an oily draining agent. CFCs and alcohol solvents have a very low boiling point and can be removed by natural drying.However, in the case of oil-based drainage agents, removal by natural drying takes some time. did. To this extent, the number of steps is slightly increased compared to the conventional cleaning method.
Considering the problems of environmental pollution, safety, etc., the effect of eliminating the need for CFCs is significant.

〔Example〕

Hereinafter, embodiments of the present invention will be sequentially described based on the flowcharts shown in FIGS. 1A and 1B.

(A) Cleaning Step This step is divided into a rough cleaning step (a), a precision cleaning step (b), and a finish cleaning step (c) for the purpose of removing oil and rust-preventive oil adhering to parts. Note that a water-soluble detergent is used as the detergent.

(A) Rough cleaning step Bearing components (3) in cleaning agent (2) put in cleaning tank (1)
Is washed for a predetermined time while the liquid surface is swung up and down. In the course of the process, the bearing part (3) is inverted once so that the details can be thoroughly washed.

(B) Precision cleaning step The bearing component (3) is transferred to an ultrasonic cleaning tank (5) containing a cleaning agent (2), and is cleaned for a predetermined time while oscillating in a liquid. Invert part (3) once.

(C) Finish cleaning step The bearing part (3) is transferred to the shower tub (6), and is showered with a cleaning agent from above for a predetermined time. Also in this case, the bearing part (3) is once inverted during the process.

(B) Rinsing Step This step is divided into a rough rinsing step (a) and a finish rinsing step (b) for the purpose of removing the cleaning liquid attached to the components in the cleaning step (A). As the rinsing liquid, water in which a rust preventive agent is dropped is used. (A) Rough rinsing step In the rinsing liquid (8) in which the ultrasonic cleaning tank (7) is placed, the bearing component (3) is shaken to a predetermined value. Rinse time.

(B) Finishing Step The bearing part (3) is inverted and transferred to another ultrasonic cleaning tank (9), and the same processing as above is performed to completely remove the cleaning agent.

(C) Draining Step This step is divided into a rough draining step (a) and a finishing draining step (b) for the purpose of removing water attached to the parts in the rinsing step (B). As the draining agent, an oily draining agent based on white kerosene or a paraffinic solvent having good drying properties is used.

(A) Coarse draining process Bearing parts (3) in a liquid tank (11) containing a draining agent (10)
Is immersed and drained for a predetermined time while the liquid surface is swung up and down. Water accumulates on the lower surface of the liquid tank (11) by specific gravity separation.

(B) Finishing Draining Step The bearing part (3) is inverted and transferred to another liquid tank (12), and the same processing as described above is performed to completely remove water.

(D) Drying step This step aims at drying the draining agent attached in the draining step (B). As a drying means, a drainer (1
Heat drying for heating the bearing component (3) below the flash point temperature of 0) or vacuum drying is used.

(E) Rust Prevention Step This step aims to prevent rusting after cleaning the parts. This step uses a rust preventive liquid in which a rust preventive oil is mixed with a petroleum-based solvent, and is used for a draining step (C) and a drying step (D).
The same processing as is performed. That is, after immersing the bearing component in the rust preventive liquid for a predetermined time, the rust preventive liquid is dried.

〔The invention's effect〕

According to the present invention, a cleaning effect equivalent to that of the conventional cleaning method can be obtained without using any organic solvent such as chlorofluorocarbon, which is a problem in environmental protection, or an alcohol solvent having a high risk of explosion. .

Further, since the rust prevention treatment is performed after the parts are washed, the rust prevention effect is higher than that of the conventional one, which is advantageous in terms of quality control of products.

[Brief description of the drawings]

FIG. 1A and FIG. 1B are flowcharts of a component cleaning method according to the present invention. A: Cleaning step, B: Rinsing step C: Draining step, D: Drying step E: Rust prevention step 2: Water-soluble detergent, 3: Bearing parts 8: Rinsing liquid, 10: Draining Agent

──────────────────────────────────────────────────続 き Continuation of front page (58) Field surveyed (Int.Cl. ⁶ , DB name) C23F 11 / 00,15 / 00 B08B 3/04 C23G 1 / 00,5 / 00 B01D 12/00

Claims (1)

(57) [Claims] A washing step of washing parts with a water-soluble detergent;
A rinsing step in which water-soluble detergent attached to the parts in the cleaning step is removed by rinsing with water to which a rust inhibitor has been added, and an oil-based drainer having a high flash point and having a rust-proof property for the moisture attached to the parts in the rinsing step. , A rust preventive step of applying a rust preventive to the parts after the drying step, and drying the applied rust preventive. A method for cleaning parts using a water-soluble detergent having the following.