Semi-synthesis cutting fluid for magnesium alloy, preparation method and application method

A cutting fluid, semi-synthetic technology, applied in the direction of lubricating composition, petroleum industry, etc., can solve the problems of shortening the service life of cutting fluid, easy oxidation and combustion, difficulty of magnesium alloy cutting and processing, etc., to improve hard water resistance and hard water resistance High, the effect of avoiding fire hazards

Active Publication Date: 2012-10-17
AMER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the extremely active magnesium element, it brings greater difficulty and potential safety hazards to the machining of magnesium alloys.
Magnesium alloys are very easy to oxidize and burn during dry cutting, and even the concentration of magnesium powder produced during processing is too high to cause explosion hazards in closed workshops, and the processing is very dangerous.
[0003] Workpieces processed with non-water-soluble cutting oil, on the one hand, cannot be thoroughly cleaned due to heavy oil stains or complex and cumbersome cleaning process, which brings greater difficulty to the subsequent cleaning process; on the other hand, magnesium alloys and cutting oils are flammable materials , bring fire hazards to safety production
[0004] It is relatively safe to use water-soluble cutting fluid, but there are generally the following disadvantages: First, because deionized water with low hardness (below 50ppm) is generally used for mixing (tap water with high chloride ion content is easy to corrode magnesium alloy workpieces) surface, make it discolored and black; groundwater has high hardness, which shortens the service life of the cutting fluid), which is likely to cause a large amount of foam, which brings inconvenience to the processing and affects the processing environment; secondly, due to the precipitation of magnesium ions in the cutting fluid during processing, It can lead to an increase in the hardness of the cutting fluid, which eventually leads to stratification and corruption of the cutting fluid and shortens the service life of the cutting fluid (the longest service life of the special cutting fluid for magnesium alloys on the market is about 1 month); The water and amine in the cutting fluid react, causing the magnesium alloy workpiece to blacken and corrode, which affects the quality of the processed product; the frequent replacement of the used fluid makes it difficult to dispose of the waste fluid, which does not meet environmental protection requirements
[0005] Therefore, there is a need for a semi-synthetic cutting fluid for magnesium alloys, which can effectively solve many problems such as excessive foam, corrosion of workpieces, machine rust, and oil-water separation during the use of water-soluble cutting fluids, and completely avoid problems that are easy to occur during the processing of magnesium alloys. fire hazard

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The magnesium alloy semi-synthetic cutting fluid of the present embodiment, the cutting fluid is made of 10% naphthenic mineral oil, 10% dodecane dibasic acid, 5% neodecanoic acid, 6% isopropanolamine, 10% three Ethanolamine, 10% pentaerythritol oleate, 10% trimethylolpropane oleate, 1.5% benzotriazole, 3.5% sodium metasilicate, 5% fatty alcohol polyoxyethylene ether, 1% ethylenediaminetetra Acetic acid, 1.5% isothiazolinone, 0.5% simethicone, 26% deionized water;

[0022] The weight in the raw materials in this embodiment and the following embodiments is: weight ratio × 3600KG;

[0023] The preparation method of the magnesium alloy semi-synthetic cutting fluid of the present embodiment comprises the following steps:

[0024] a. Preparation of water-soluble cutting fluid compound agent: add dodecane dibasic acid, neodecanoic acid, isopropanolamine, triethanolamine, pentaerythritol oleate, three Methylolpropane oleate, benzotriazole, sodium metasilicate, ethylenediamin...

Embodiment 2

[0039] The magnesium alloy semi-synthetic cutting fluid of the present embodiment, cutting fluid is by weight ratio by 12.8% naphthenic mineral oil, 10% dodecane dibasic acid, 5% neodecanoic acid, 5% isopropanolamine, 10% three Ethanolamine, 7.5% pentaerythritol oleate, 7.5% trimethylolpropane oleate, 1% benzotriazole, 1% sodium metasilicate, 10% fatty alcohol polyoxyethylene ether, 1% ethylenediaminetetra Acetic acid, 0.1% isothiazolinone, 0.1% simethicone, 29% deionized water;

[0040] The preparation method of the magnesium alloy semi-synthetic cutting fluid of the present embodiment comprises the following steps:

[0041] a. Preparation of water-soluble cutting fluid compound agent: add dodecane dibasic acid, neodecanoic acid, isopropanolamine, triethanolamine, pentaerythritol oleate, three Methylolpropane oleate, benzotriazole, sodium metasilicate, ethylenediaminetetraacetic acid, deionized water, stirred at a constant speed and heated to 75°C for 55 minutes, confirmed t...

Embodiment 3

[0056] The magnesium alloy semi-synthetic cutting fluid of the present embodiment, the cutting fluid is made of 20% naphthenic mineral oil, 4% dodecane dibasic acid, 6% neodecanoic acid, 8% isopropanolamine, 12% three Ethanolamine, 7.5% pentaerythritol oleate, 7.5% trimethylolpropane oleate, 3% benzotriazole, 5% sodium metasilicate, 5% fatty alcohol polyoxyethylene ether, 1.8% ethylenediaminetetra Acetic acid, 0.1% isothiazolinone, 0.1% simethicone, 20% deionized water;

[0057] The preparation method of the magnesium alloy semi-synthetic cutting fluid of the present embodiment comprises the following steps:

[0058]a. Preparation of water-soluble cutting fluid compound agent: add dodecane dibasic acid, neodecanoic acid, isopropanolamine, triethanolamine, pentaerythritol oleate, three Methylolpropane oleate, benzotriazole, sodium metasilicate, ethylenediaminetetraacetic acid, deionized water, stirred at a constant speed and heated to 85°C for 65 minutes, confirmed that the so...

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Abstract

The invention discloses a semisynthesis cutting fluid for magnesium alloy. According to the invention, the hidden danger of fire hazard in the process of magnesium alloy processing is totally avoided by using an environment-friendly water-soluble system; excellent reasonable proportioning of additives and combined application of corrosion inhibitors effectively prevent the surface of processed magnesium alloy from corrosion and blackening; designing of a low foam type formula enables generation of foam in the cutting fluid for the magnesium alloy to be totally inhibited; application of a delicate low-foam surfactant enables the problem of difficult cleaning of workpiece surface due to excessive oil stains to be overcome; application of an additive with resistance to hard water enables hard water-resistance of the fluid to be effectively improved, the fluid has hard water-resistance of 15000 ppm, allowing the service life of the fluid to be prolonged, all the indexes of the fluid reach or exceed relevant indexes in GB6144-2010, anti-rust performance lasts for more than 72 h per sheet, and the life cycle of the fluid is more than 8 months, 3 to 6 times the life cycle of magnesium alloy cutting fluid on the market; and reasonable design of an environment-friendly formula enables the problems of difficulty in treating waste liquid and the like to be effectively overcome.

Description

technical field [0001] The invention relates to a cutting fluid for mechanical processing, in particular to a magnesium alloy semi-synthetic cutting fluid, a preparation method and a use method. Background technique [0002] Magnesium alloy is the lightest metal structural material in practical application. Due to its unique advantages in density and strength, it has broad application prospects in defense fields such as aerospace and civil fields such as transportation, electronics, and communications, and has become the current structural material. research hotspots. Because the magnesium element is extremely active, it brings greater difficulty and potential safety hazards to the machining of magnesium alloys. Magnesium alloys are extremely easy to oxidize and burn during dry cutting, and even the high concentration of magnesium powder produced during processing can easily cause explosion hazards in closed workshops, and the processing process is very dangerous. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M173/00C10M177/00C10N40/22
Inventor 王斌斌汪小龙
Owner AMER TECH CO LTD
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