阅读说明：本技术 一种适用于航空钛合金加工的切削液 (Cutting fluid suitable for aviation titanium alloy processing ) 是由 廖云华 黄国都 赵凯利 聂晓霖 于 2021-09-27 设计创作，主要内容包括：本发明公开了一种适用于航空钛合金加工的切削液,由如下质量百分数的组分组成：20～25％植物油、4～5％防锈剂、6～10％乳化剂、5～6％碱缓冲剂、6～8％合成酯、0.5％～0.6％气雾抑制剂、2～3％防腐增效剂以及水余量。本发明采用乙基己基甘油与苯氧乙醇协同防腐,防腐效果好,摒弃了现有切削液中必不可少的胺类成分,不仅降低了切削液在使用过程中VOCs的挥发量,同时防腐性能并未受到影响；另外,配方中不含胺类成分,还能够使产生的废液中几乎不含氨氮,进而便于废液的处理排放；最后,本发明通过高分子气雾抑制剂有效抑制了低分子有机物的挥发,从而有效降低了航空钛合金长时间加工过程中产生的VOCs。(The invention discloses a cutting fluid suitable for aviation titanium alloy processing, which comprises the following components in percentage by mass: 20-25% of vegetable oil, 4-5% of antirust agent, 6-10% of emulsifier, 5-6% of alkali buffer, 6-8% of synthetic ester, 0.5-0.6% of aerosol inhibitor, 2-3% of anticorrosion synergist and the balance of water. The method adopts the ethylhexyl glycerin and the phenoxyethanol to realize synergistic corrosion prevention, has good corrosion prevention effect, abandons the essential amine components in the existing cutting fluid, reduces the volatile amount of VOCs in the use process of the cutting fluid, and simultaneously has no influence on the corrosion prevention performance; in addition, the formula does not contain amine components, and the generated waste liquid hardly contains ammonia nitrogen, so that the waste liquid is convenient to treat and discharge; finally, the invention effectively inhibits the volatilization of low molecular organic matters through the macromolecular aerosol inhibitor, thereby effectively reducing VOCs generated in the long-time processing process of the aviation titanium alloy.)

1. The cutting fluid suitable for aviation titanium alloy processing is characterized by comprising the following components in percentage by mass: 20-25% of vegetable oil, 4-5% of antirust agent, 6-10% of emulsifier, 5-6% of alkali buffer, 6-8% of synthetic ester, 0.5-0.6% of aerosol inhibitor, 2-3% of anticorrosion synergist and the balance of water.

2. The cutting fluid suitable for aviation titanium alloy machining according to claim 1, wherein: the vegetable oil is one or more of rapeseed oil, soybean oil, castor oil, palm oil, coconut oil or peanut oil.

3. The cutting fluid suitable for aviation titanium alloy machining according to claim 1, wherein: the antirust agent is one of lauric acid, sebacic acid or azelaic acid.

4. The cutting fluid suitable for aviation titanium alloy machining according to claim 1, wherein: the emulsifier is one or a mixture of more of isomeric tridecanol polyoxyethylene ether, polyisobutylene succinic anhydride, fatty acid polyoxyethylene ester or tall oil.

5. The cutting fluid suitable for aviation titanium alloy machining according to claim 1, wherein: the alkali buffer is one or a mixture of sodium carbonate, potassium carbonate, sodium hydroxide or potassium hydroxide.

6. The cutting fluid suitable for aviation titanium alloy machining according to claim 1, wherein: the synthetic ester is one of trimethylolpropane oleate, pentaerythritol oleate, neopentyl glycol oleate, isooctyl palmitate or tetrapolyricinoleate.

7. The cutting fluid suitable for aviation titanium alloy machining according to claim 1, wherein: the aerosol inhibitor is one of polyacrylamide, sodium polyacrylate, polyethylene glycol or polypropylene glycol.

8. The cutting fluid suitable for aviation titanium alloy machining according to claim 1, wherein: the anticorrosion synergist is prepared from ethylhexyl glycerol and phenoxyethanol according to a mass ratio of 1: 1.

Technical Field

The invention relates to a cutting fluid suitable for aviation titanium alloy processing.

Background

VOCs (volatile organic compounds) are various organic compounds having a boiling point of 50 ℃ to 260 ℃ at normal temperature. Low molecular weight fatty amines such as monoethanolamine, diethanolamine, methylethanolamine, monoisopropanolamine and the like are widely applied to the cutting fluid, and the low molecular weight fatty amines have the functions of rust prevention, auxiliary emulsification, lubrication and the like in the cutting fluid, so that the corrosion resistance of the cutting fluid can be obviously improved. However, the aliphatic amine has low boiling point and is volatile, and belongs to high-VOCs substances. Meanwhile, the ammonia nitrogen content of the wastewater generated by the cutting fluid containing the aliphatic amine is extremely high, and the wastewater cannot reach the discharge standard of wastewater treatment. At present, a large amount of low-molecular-weight fatty amine is used in commercially available cutting fluid, and the product has extremely high VOCs. In the field of aviation titanium alloy processing, because of high processing precision, large size and complex shape of workpieces, the aviation titanium alloy generally has long processing time, namely hours in short time and weeks in long time. The high temperature of the long-time processing and the high-speed shearing of the cutter lead the cooling medium, namely the cutting fluid, to be volatilized greatly, in particular the low-molecular-weight aliphatic amine in the cutting fluid to be volatilized, and the generated water mist containing a large amount of VOCs is discharged into the atmosphere of a factory, thus being harmful to the environment and the human health.

Disclosure of Invention

The purpose of the invention is as follows: the invention aims to provide a cutting fluid which does not contain amine volatile components and high-VOCs components.

The technical scheme is as follows: the cutting fluid suitable for aviation titanium alloy processing comprises the following components in percentage by mass: 20-25% of vegetable oil, 4-5% of antirust agent, 6-10% of emulsifier, 5-6% of alkali buffer, 6-8% of synthetic ester, 0.5-0.6% of aerosol inhibitor, 2-3% of anticorrosion synergist and the balance of water.

Wherein the vegetable oil is one or more of rapeseed oil, soybean oil, castor oil, palm oil, coconut oil or peanut oil; preferably refined rape oil and castor oil.

Wherein the antirust agent is one of lauric acid, sebacic acid or azelaic acid.

Wherein the emulsifier is one or a mixture of more of isomeric tridecanol polyoxyethylene ether, polyisobutylene succinic anhydride, fatty acid polyoxyethylene ester or tall oil; mixtures of polyisobutylene succinic anhydride and polyoxyethylene esters of fatty acids are preferred.

Wherein the alkali buffer is one or a mixture of sodium carbonate, potassium carbonate, sodium hydroxide or potassium hydroxide.

Wherein the synthetic ester is one of trimethylolpropane oleate, pentaerythritol oleate, neopentyl glycol oleate, isooctyl palmitate or tetrapoly ricinoleate.

Wherein the aerosol inhibitor is one of polyacrylamide, sodium polyacrylate, polyethylene glycol or polypropylene glycol.

The preservative synergist is prepared from ethylhexyl glycerol and phenoxyethanol according to a mass ratio of 1: 1. The phenoxyethanol serving as an environment-friendly preservative can effectively inhibit the breeding of bacteria in the cutting fluid, the ethylhexyl glycerin can effectively reduce the surface tension of cell walls of the bacteria and the fungi, and the combination of the phenoxyethanol and the ethylhexyl glycerin enhances the permeability of the bacteria and the fungi, inhibits the activity of microorganisms and achieves the optimal preservative effect.

Has the advantages that: compared with the prior art, the invention has the remarkable advantages that: (1) compared with traditional cutting fluid anticorrosive components, namely triazine, morpholine derivatives, organic boron and thiazole derivatives, which have extremely high biotoxicity and harm ecological environment, the environment-friendly ethylhexyl glycerol and phenoxyethanol are adopted for synergistic anticorrosion, the anticorrosion effect is good, the traditional anticorrosive components with essential amine components and high biotoxicity in the existing cutting fluid are abandoned, the volatilization amount of VOCs in the use process of the cutting fluid is reduced, and meanwhile, the anticorrosion performance is not influenced; (2) the formula does not contain amine components, so that the generated waste liquid hardly contains ammonia nitrogen, and the treatment and discharge of the waste liquid are facilitated; (3) the invention effectively inhibits the volatilization of low molecular organic matters through the macromolecular aerosol inhibitor, thereby effectively reducing VOCs generated in the long-time processing process of the aviation titanium alloy.

Detailed Description

The technical solution of the present invention is further illustrated below with reference to specific examples.

Example 1

The invention relates to a cutting fluid suitable for aviation titanium alloy processing, which is prepared by mixing and stirring the following components in percentage by mass: 20% of castor oil, 4% of lauric acid, 4% of sodium carbonate, 1% of sodium hydroxide, 6% of tetrapoly ricinoleate, 3% of polyisobutylene succinic anhydride, 3% of fatty acid polyoxyethylene ester, 60000.5% of polyethylene glycol, 1% of ethylhexyl glycerol, 1% of phenoxyethanol and the balance of water.

Example 2

The invention relates to a cutting fluid suitable for aviation titanium alloy processing, which is prepared by mixing and stirring the following components in percentage by mass: 25% of castor oil, 4% of sebacic acid, 5% of potassium carbonate, 8% of tetrapolyricinoleate, 4% of polyisobutylene succinic anhydride, 4% of polyoxyethylene fatty acid ester, 40000.5% of polypropylene glycol, 1% of ethylhexyl glycerol, 1% of phenoxyethanol and the balance of water.

Example 3

The invention relates to a cutting fluid suitable for aviation titanium alloy processing, which is prepared by mixing and stirring the following components in percentage by mass: 20% of rapeseed oil, 4% of sebacic acid, 4% of potassium carbonate, 1% of potassium hydroxide, 10% of trimethylolpropane oleate, 6% of polyisobutylene succinic anhydride, 4% of fatty acid polyoxyethylene ester, 0.5% of sodium polyacrylate, 1.5% of ethylhexyl glycerol, 1.5% of phenoxyethanol and the balance of water.

Comparative example 1

The cutting fluid is prepared by mixing and stirring the following components in percentage by mass: 25% of castor oil, 4% of sebacic acid, 5% of potassium carbonate, 8% of tetrapolyricinoleate, 4% of polyisobutylene succinic anhydride, 4% of polyoxyethylene fatty acid ester, 40000.5% of polypropylene glycol, 1% of phenoxyethanol and the balance of water.

Comparative example 2

The cutting fluid is prepared by mixing and stirring the following components in percentage by mass: 25% of castor oil, 4% of sebacic acid, 5% of potassium carbonate, 8% of tetrapolyricinoleate, 4% of polyisobutylene succinic anhydride, 4% of polyoxyethylene fatty acid ester, 40000.5% of polypropylene glycol, 1% of ethylhexyl glycerol and the balance of water.

Comparative example 3

The cutting fluid is prepared by mixing and stirring the following components in percentage by mass: 25% of castor oil, 4% of sebacic acid, 5% of potassium carbonate, 8% of tetrapolyricinoleate, 4% of polyisobutylene succinic anhydride, 4% of polyoxyethylene fatty acid ester, 40000.5% of polypropylene glycol, 1.5% of ethylhexyl glycerol, 0.5% of phenoxyethanol and the balance of water.

Comparative example 4

The cutting fluid is prepared by mixing and stirring the following components in percentage by mass: 25% of castor oil, 4% of sebacic acid, 4% of monoethanolamine, 4% of triethanolamine, 3% of monoisopropanolamine, 8% of tetrapolyricinoleate, 4% of polyisobutylene succinic anhydride, 4% of polyoxyethylene fatty acid ester, 40000.5% of polypropylene glycol, 1% of ethylhexyl glycerol, 1% of phenoxyethanol and the balance of water.

The performances of the cutting fluids of examples 1 to 3 and comparative examples 1 to 4 and the commercially available cutting fluids containing amine components and conventional corrosion inhibitors were compared, and are shown in table 1:

as can be seen from Table 1, the antibacterial and anticorrosive performance of the cutting fluid in the embodiments 1-3 is equivalent to that of the commercially available cutting fluid containing amine components and conventional preservatives, but the contents of VOCs and ammonia nitrogen are extremely low, and meanwhile, due to the adoption of the environment-friendly anticorrosive component, the cutting fluid does not contain the conventional anticorrosive component, and the biological toxicity and the environmental hazard are extremely low.

Compared with the examples 1 to 3, the anticorrosive performance of the comparative examples 1 to 3 is much worse, which shows that the anticorrosive performance of the formula of the invention requires the compounding of phenoxyethanol and ethylhexyl glycerin. The ethylhexyl glycerol can effectively reduce the surface tension of bacterial and fungal cell walls, improve the permeability of phenoxyethanol to microbial cells and inhibit the growth of microorganisms. The antiseptic effect of the two components is greatly reduced when the two components are used independently, and meanwhile, the compound quality ratio of the two components is 1:1, and the effect is optimal when the two components are used repeatedly.

Compared with the commercially available cutting fluid containing amine components and the traditional preservative and the comparative example 4, the cutting fluid disclosed by the invention has the advantages that the high-temperature lubricity and the antibacterial and anticorrosive performances of the cutting fluid are taken into consideration, and meanwhile, the amine components are not contained, so that the generation of VOCs is greatly avoided, and the content of ammonia nitrogen in the waste liquid is effectively reduced. Comparative example 4 contains amine components and the contents of VOCs and ammonia nitrogen are still high, although aerosol suppressant is used to reduce VOCs.