KR102053046B1 - Eco-friendly cutting water for non-ferrous metals - Google Patents

Abstract

The present invention relates to a cutting water for a non-ferrous metal, which is sprayed to a ferrous metal workpiece and a cutting tool to absorb friction heat and to reduce a kinetic friction coefficient for smooth processing so as to reduce abrasion of the cutting tool, does not use an existing cutting oil not to occur decomposition during remaining on a tool so as to hygienically maintain a working environment, and includes hydrophilic components to prevent an environmental pollution by wastewater. The cutting water for a nonferrous metal of the present invention is produced by adding a multifunctional agent to an aqueous solution including water, strong alkaline electrolyzed water, triethanol amine (TEA), sodium tetraborate, an organic nitrogen-based compound, poly-quaternary ammonium chloride, and has pH 9 to 12.5.

Description

Eco-friendly cutting water for non-ferrous metals

The present invention relates to cutting water for nonferrous metals, and more particularly, to reduce the wear and tear of the cutting tool by lowering the coefficient of motion friction so as to be sprayed on the non-ferrous metal workpiece and the cutting tool to absorb the frictional heat and smooth processing The present invention relates to an eco-friendly cutting water for non-ferrous metals, which does not use and does not cause corruption when remaining in the tool, and thus keeps the working environment clean and is composed of hydrophilic components to prevent environmental pollution caused by waste water.

In general, in order to process the non-ferrous metal requires a cutting tool having a higher strength than the non-ferrous metal, for this reason various attempts have been made to increase the strength of the cutting tool.

For example, industrial diamond attached to the cutting edge of the cutting tool can greatly improve the strength of the cutting edge, but when used in metal processing for a long time, there is a need to repair and repair it regularly because it wears out. In this case, the cutting edge repair cost occupies a substantial portion of the metal working cost and the cutting speed decreases as the friction between the workpiece and the cutting tool increases, thereby reducing work efficiency.

Therefore, conventionally, in addition to improving the cutting edge strength of the cutting tool, as a more economic method, a method of introducing cutting oil (cutting water) that performs cooling, lubrication, and washing during metal processing is widely used.

In addition to the cooling and lubricating action, the cutting oil for metal processing must also perform the action of preventing the welding phenomenon between the processing surface and the cutting edge, and the cleaning action.

To this end, cutting oils widely used in the art include water, wherein water as cutting oil has excellent characteristics in suppressing temperature rise due to frictional heat generated by friction between the workpiece and the cutting tool. Because of the low effect of lowering, there was a problem that it is difficult to prevent the cutting edge wear of the cutting tool, or to improve the cutting speed.

In addition, the conventional cutting oil is mainly used by diluting with the water produced by using petroleum-based, there is a problem that the cutting oil is rotting when remaining in the tool, a lot of inverse odor occurs to make the operator feel uncomfortable working environment This is a bad problem, there is a disadvantage that must be disposed of according to the waste disposal standards.

1. Republic of Korea Patent Publication No. 10-0665790 2. Republic of Korea Patent Publication No. 10-0693399 3. Republic of Korea Patent Publication No. 10-1674413

In order to solve the above problems, the present invention is sprayed on the non-ferrous metal workpiece and the cutting tool to absorb frictional heat and lower the motion friction coefficient so that the processing can be made smoothly, reducing the wear of the cutting tool, The challenge is to provide an eco-friendly cutting water for nonferrous metals that does not use cutting oil, so that the working environment is kept clean because no corruption occurs in the tool, and it is composed of hydrophilic components to prevent environmental pollution by wastewater. do.

In order to solve the above problems, the inventors of the present invention, using a strong alkaline electrolytic water as a main component, including water, strong alkaline electrolytic water, triethanol amine, sodium tetraborate, organic nitrogen-based compound, poly quaternary ammonium chloride A multifunctional agent was added to the aqueous solution, which was achieved by providing environmentally friendly cutting water for nonferrous metals having a pH of 9 to 12.5.

Eco-friendly cutting water for non-ferrous metals of the present invention solved the above problems is water; Strongly alkaline electrolytic water; Triethanol amine (TEA); Sodium tetraborate; Organic nitrogen compounds; A multifunctional agent is added to an aqueous solution comprising an antimicrobial agent of any one selected from polyquaternary ammonium chloride, polyquaternium-1, or polyhexamethylene biguanide polymer, and has a pH of 9 to 12.5. It is characterized by.

Here, the aqueous solution is 72 to 76 parts by weight of water, 55 to 67 parts by weight of strongly alkaline electrolyzed water, 20 to 23 parts by weight of triethanolamine, 3 to 3.5 parts by weight of sodium tetraborate, and 0.1 to 0 organic compounds. 0.9 parts by weight, polyquaternary ammonium chloride (polyquaternary ammonium chloride), polyquaternium-1 or polyhexamethylene biguanide polymer, characterized in that it comprises 0.3 to 0.5 parts by weight of any one of the antimicrobial material selected.

Here, the said multifunctional agent is added, 0.005-0.85 weight part with respect to 100 weight part of said aqueous solution, It is characterized by the above-mentioned.

Here, the multifunctional agent is characterized in that the anionic dissociation compound containing a hydrophilic dissociative head group as any one having the following formulas (1) to (4).

[Formula 1]

[Formula 2]

[Formula 3]

[Formula 4]

Wherein R is a linear or branched alkyl or alkenyl group containing 8 to 18 carbon atoms in total, or R is an alkyl group containing 9 or 10 carbon atoms in total.

Here, the anionic dissociation compound is characterized in that it comprises laurylethylenediamine triacetate (LED3A) having the formula (5).

[Formula 5]

Herein, the organic nitrogen-based compound may be methylamine (CH ₃ NH ₂ ), indole (C ₈ H ₇ N), piridine (C ₅ H ₅ N), aniline (C ₆ H ₅ NH ₂ It is characterized by using any one or more selected from the group consisting of.

Here, any one vegetable oil selected from the group consisting of palm oil, palm oil, safflower oil, cottonseed oil, corn oil, soybean oil, and rapeseed oil may be further added to the cutting water, and the amount is 0.1 to 100 parts by weight of the aqueous solution. It is characterized by adding 1.5 parts by weight.

Eco-friendly cutting water for the non-ferrous metal provided in the present invention improves the machinability without corrosion of the metal, the tool wear is not good, the tool is always kept clean, the corruption does not occur even after remaining in the tool clean working environment It is maintained, does not have oil on the hands, is not sticky, and there is no oil smell.

In addition, it is aqueous and environmentally friendly, and it is transparent and aqueous, so that the cutting surface is easily seen, and there is an advantage that the product does not rust because it contains a multifunctional agent, and does not include cutting oil, so there is no oil smell.

In addition, it is possible to prevent safety accidents around the cutting tool machine and the factory because it is clean and not slippery, and it is not harmful to the human body when working, does not cause headaches and skin troubles, and does not leave oil on the processed product. .

Hereinafter, the present invention will be described in more detail.

The present invention relates to cutting water used in the process of cutting non-ferrous metals, in particular aluminum, and more specifically, to provide an environment-friendly aqueous cutting water composition that is strongly alkaline using strong alkaline electrolytic water.

Eco-friendly cutting water for non-ferrous metals of the present invention to achieve the above object includes water, strong alkaline electrolytic water, triethanol amine (TEA), sodium tetraborate, organic nitrogen-based compounds, polyquaternary ammonium chloride (Polyquaternary Ammonium Chloride) It is made by adding a multifunctional agent to the aqueous solution which consists of the thing of pH 9-12.5, The technical characteristic is there.

Preferably, the aqueous solution is 72 to 76 parts by weight of water, 55 to 67 parts by weight of strongly alkaline electrolyzed water, 20 to 23 parts by weight of triethanolamine, 3 to 3.5 parts by weight of sodium tetraborate, organic nitrogen-based compound (0.1) 0.9 parts by weight, polyquaternary ammonium chloride (Polyquaternary Ammonium Chloride) comprises 0.3 to 0.5 parts by weight,

The multifunctional agent is added by 0.005 to 0.85 parts by weight based on 100 parts by weight of the aqueous solution. Preferably, the multifunctional agent is added to the cutting water in the aqueous state so that the multifunctional agent is present in the cutting water at a concentration of 0.001 to 1.0 w / v%.

On the other hand, it is preferable to use distilled water as said water which comprises the said aqueous solution.

According to the present invention, the strongly alkaline electrolyzed water refers to alkaline ionized water produced by electrolyzing water, and is widely used in place of chemicals such as disinfectant disinfectants, cleaners, detergents, waxes, and the like. It is used in various fields to reduce or remove substances.

The strongly alkaline electrolytic water is produced by a conventional electrolytic water generating device, preferably used in the range of pH 12 ~ 13.5.

According to the present invention, the multifunctional agent is any one having the following Chemical Formulas 1 to 4, and uses an anionic dissociating compound containing a hydrophilic dissociative head group.

[Formula 1]

[Formula 2]

[Formula 3]

[Formula 4]

In each of the above R is a linear or branched alkyl or alkenyl group containing 8 to 18 carbon atoms in total, or R is an alkyl group containing 9 or 10 carbon atoms in total.

The anionic dissociation compound is a multifunctional anionic surfactant comprising a hydrophilic dissociative head group, and has surface active and chelating properties, and thus may be referred to as a multifunctional agent. The head group of the anionic dissociating compound should be able to dissociate at pH9.0 or above, and the compound has a hydrocarbon chain length of C8 to C18. Anionic groups can be derived from acids such as carboxylic acids, sulfonic acids or phosphonic acids.

According to the present invention, the anionic dissociation compound may include laurylethylenediaminetriacetate (LED3A) having the following formula (5).

[Formula 5]

According to the present invention, the polyquaternary ammonium chloride is an antimicrobial agent, and any antimicrobial agent that can be used as an environmentally friendly material other than the polyammonium chloride may be used, for example, polyquaternium-1 Or polyhexamethylene biguanide polymer.

According to the present invention, the organic nitrogen-based compound (Organic Nitrogen-based Compound) is used that is commonly used, preferably methylamine (CH ₃ NH ₂ ), indole (C ₈ H ₇ N), filidine (C ₅ H ₅ N), aniline (C ₆ H ₅ NH ₂ ) It is to use any one or more selected from the group consisting of.

According to the present invention, preferably, any one vegetable oil selected from the group consisting of palm oil, palm oil, safflower oil, cottonseed oil, corn oil, soybean oil, and rapeseed oil in order to increase the surface lubrication activity of the cutting water as needed during the cutting process of nonferrous metals. It can be added, and the addition amount is good to add 0.1-1.5 weight part with respect to 100 weight part of said aqueous solutions. If it is out of the threshold range, it may be difficult to expect surface lubrication expected by the addition of vegetable oil, or there may be a problem in that workability may be degraded due to biological change of oil due to frictional heat during the cutting process.

Hereinafter, the present invention will be described in more detail with reference to preferred embodiments.

The embodiments disclosed below are not limited to the present invention as a preferred example for explaining the present invention, and those skilled in the art can be modified as much as possible within the scope of the claims.

EXAMPLES 1-4

Cutting water was prepared at a weight ratio as shown in Table 1, and sterilization, decay and rust resistance experiments were conducted, and the harmful substances were analyzed for each composition, and the results of the experiments and analysis are described in Tables 2 to 5 below. Indicated.

The mixing unit of the content of each component of Table 1 below is parts by weight.

Configuration Example 1 Example 2 Example 3 Example 4 water 76 74 72 75 Strong alkalinity
Electrolytic water 67 61 55 59 Triethanolamine 21 23 20 21 Sodium tetraborate 3.5 3.2 3.0 3.1 Polyquaternary Ammonium Chloride 0.4 0.3 0.3 0.4 Methylamine 0.7 0.1 0.7 0.3 aniline - 0.4 0.2 0.3 Lauryl Ethylene Diamine Triacetate
(LED3A) 0.8 0.008 0.01 0.005

In Table 1, the LED3A was used to have the following Formula 5.

[Formula 5]

The strongly alkaline electrolyzed water is electrolyzed by adding potassium hydroxide to the raw water tank, and adding NaCl as an electrolyte to the electrolytic cell, using an electrolysis cell comprising an electrolytic cell that causes electrolysis and a raw water tank in which potassium hydroxide is dissolved. By using the electrolytic water in the range of pH 12.8 ~ 13.0 was used.

The pH of the composition prepared in Table 1 was measured and found to be in the range of pH 10-12.

The bactericidal, decaying, and rust proof experiments of the respective compositions prepared in Table 1 above were conducted, and the results of analysis of harmful substances for each composition are shown below.

Sterilization Test

Test strain Escherichiacoil (ATCC8739) 19 × 10 ⁵ (CFU / mL), Staphylococcusaureus (ATCC6538) 14 × 10 ⁵ (CFU / mL) by adopting a fixed concentration test method to confirm the sterilizing power of cutting water for processing nonferrous metals prepared in Table 1. To 1 l of the composition solution according to Example 1, Example 2, Comparative Examples 1 to 5, respectively, and after 30 seconds elapsed 100ml from each solution was checked to determine the remaining bacteria. It was repeated three times each, the average value is shown in Table 2 below.

Test strain Example 1 Example 2 Example 3 Example 4 Bacteria
(CFU / mL) Bactericidal power
(%) Bacteria
(CFU / mL) Bactericidal power
(%) Bacteria
(CFU / mL) Bactericidal power
(%) Bacteria
(CFU / mL) Bactericidal power
(%) Escherichiacoil <10 99.9 <10 99.9 <10 99.9 <10 99.9 Staphylococcusaureus <10 99.9 <10 99.9 <10 99.9 <10 99.9

As can be seen from Table 2, the cutting water according to the present invention was found to have excellent sterilization power.

Antirust Test

The antirust test was carried out using a casting immersion method. Specifically, the filter paper was placed on a shale, and then the dried cutting chips were put in and wetted with each cutting water of Table 1, followed by 1 hour, 6 hours, and 24 hours. The degree of occurrence of rust was confirmed and shown in Table 3. Specific display method was indicated as having rust (×), less than 10 melting point (△), none (◎), the rusting was based on when more than 10 melting point occurs. The results are shown in Table 3 below.

time Example 1 Example 2 Example 3 Example 4 1 hours ◎ ◎ ◎ ◎ 6 hours ◎ ◎ ◎ ◎ 24 hours ◎ ◎ ◎ ◎

Looking at the results of Table 3, the cutting water provided according to the present invention was found to be very excellent in rust resistance.

Perishability Experiment

In order to measure the corruption of the cutting water shown in Table 1, the steel was cut while supplying the cutting water to the NC lathe. The cutting speed was 600 rpm, and the tool was cut continuously with cemented carbide. In order to measure the degree of decay of the cutting water, the cutting water was continuously supplied and collected for 30 minutes, and then left at a temperature of 25 ° C. for 1 month. 4 is shown. ○ when strong odor is generated, △ when weak odor is produced, and × when no odor is produced.

Example 1 Example 2 Example 3 Example 4 Bad smell × × × × Color change × × × ×

As a result of Table 4, it was found that the cutting water according to the present invention has a very excellent decay property.

Hazardous Substance Analysis

Toxic substances of the cutting water of Table 1 were measured using an analyzer, ion chromatography (IC), ICP-AES, and the results are shown in Table 5 below.

Analysis item unit Quantitative Limit Example 1 Example 2 Example 3 Example 4 Triethanolamine % 0.004 0.63 0.61 0.62 1.61 pH - - 11.41 11.24 10.55 10.1 B Mg / L 0.1 Not detected Not detected Not detected Not detected NH4 Mg / L One Not detected Not detected Not detected Not detected NO2 Mg / L 0.1 Not detected Not detected Not detected Not detected NO3 Mg / L 0.1 3.9 3.7 3.1 3.3

1) Not detected = not detected (<quantity limit)

2) Quantitative limit = Analytical result

3) Analyzer = Ion Chromatography (IC), ICP-AES

As a result of the above experiment, it was found that the cutting water provided according to the present invention has excellent physical and chemical properties.

Claims (7)

water; Strongly alkaline electrolytic water; Triethanol amine (TEA); Sodium tetraborate; Organic nitrogen compounds; A multifunctional agent is added to an aqueous solution comprising an antimicrobial agent of any one selected from polyquaternary ammonium chloride, polyquaternium-1, or polyhexamethylene biguanide polymer, and has a pH of 9 to 12.5. Eco-friendly cutting water for non-ferrous metals, characterized in that.
delete The method of claim 1,
The multifunctional agent is eco-friendly cutting water for non-ferrous metal, characterized in that the addition of 0.005 to 0.85 parts by weight based on 100 parts by weight of the aqueous solution.
The method of claim 1,
The multifunctional agent is an environmentally friendly cutting water for non-ferrous metals, characterized in that the anionic dissociation compound containing a hydrophilic dissociative head group as any one having the following formulas (1) to (4).
[Formula 1]

[Formula 2]

[Formula 3]

[Formula 4]

Wherein R is a linear or branched alkyl or alkenyl group containing 8 to 18 carbon atoms in total, or R is an alkyl group containing 9 or 10 carbon atoms in total.
The method of claim 4, wherein
Eco-friendly cutting water for non-ferrous metal, characterized in that the anionic dissociating compound comprises laurylethylenediamine triacetate (LED3A) having the formula (5).
[Formula 5]

The method of claim 1,
The organic Nitrogen-based compound is methylamine (CH ₃ NH ₂ ), indole (C ₈ H ₇ N), filidine (C ₅ H ₅ N), aniline (C ₆ H ₅ NH ₂ ) Eco-friendly cutting water for non-ferrous metals, characterized in that using at least one selected from the group consisting of.
The method of claim 1,
Palm oil, palm oil, safflower oil, cottonseed oil, corn oil, soybean oil, rapeseed oil may be further added to the cutting water. Eco-friendly cutting water composition for a nonferrous metal, characterized in that the addition of a part.