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Capillary mold oil for aluminum alloy casting crystallizer and preparation method of aluminum alloy casting capillary mold oil

A crystallizer and capillary technology, which is applied in the field of aluminum alloy casting mold capillary release oil and its preparation, can solve problems such as poor performance, large mold damage, and smoke, so as to reduce coking and residual carbon and improve surface quality , the effect of prolonging the service life

Active Publication Date: 2013-05-08
如东文园投资开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Aluminum alloy processing and casting demolding Traditionally, a layer of graphite grease is applied to the surface of the mold. The disadvantages of this processing technology are high labor costs, uneven manual application, serious smoke during high temperature casting, severe damage to the mold, and smooth surface of the finished product. degree difference
Due to the above shortcomings, the new casting and demoulding process uses capillaries densely covered on the surface of the crystallizer, and the capillaries are filled with vegetable oil such as soybean oil or some lubricating oil with better high temperature performance for lubrication and demoulding, which overcomes the above shortcomings. The capillary release oil is often due to poor performance, resulting in serious carbon deposits, capillary holes are often blocked, affecting the casting release effect, and at the same time, the smoke is serious

Method used

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  • Capillary mold oil for aluminum alloy casting crystallizer and preparation method of aluminum alloy casting capillary mold oil
  • Capillary mold oil for aluminum alloy casting crystallizer and preparation method of aluminum alloy casting capillary mold oil
  • Capillary mold oil for aluminum alloy casting crystallizer and preparation method of aluminum alloy casting capillary mold oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Step 1: Feed 148.24kg (2000mol) of n-butanol and 82kg (1000mol) of phosphorous acid into the reaction kettle, fill it with nitrogen protection, stir and heat to 130°C, keep it warm for 4 hours, and evaporate the water under reduced pressure to obtain dibutanesulfide Phosphate ester 198.2kg (1000mol);

[0029] Step 2: Add 74.12kg (1000mol) of n-butanol and 15kg of potassium hydroxide into the polymerization kettle cooled by ice-salt water circulation at about 0°C and stir, then pass nitrogen into the polymerization kettle to convert the air in the kettle, when the nitrogen in the polymerization kettle While maintaining the positive pressure, push 1442.2kg (20000mol) of butylene oxide into the polymerization kettle with a nitrogen feed tank, while stirring to raise the temperature to 110-120°C, and adjust the pressure to 0.25MPa. The polymer is extruded to obtain 1531.32kg of polyoxybutylene monobutyl ether (containing potassium hydroxide).

[0030] Step 3: Take 5 kg of ...

Embodiment 2

[0034] Step 1: Add 74.12kg (1000mol) of n-butanol and 4kg of potassium hydroxide into the polymerization kettle cooled by ice-salt water circulation at about 0°C and stir, then pass nitrogen into the polymerization kettle to convert the air in the kettle, when the nitrogen in the polymerization kettle While maintaining the positive pressure, push 721.1kg (10000mol) of butylene oxide into the polymerization kettle with a nitrogen feed tank, while stirring to raise the temperature to 120°C, and adjust the pressure to 0.35MPa. The extruded product is polyoxybutylene monobutyl ether 799.22kg (containing potassium hydroxide).

[0035] Step 2: Feed 148.24kg (2000mol) of n-butanol and 82kg (1000mol) of phosphorous acid into the reaction kettle, fill it with nitrogen protection, stir and heat to 140°C, keep it warm for 3 hours, and evaporate the water under reduced pressure to obtain dibutanesulfide Phosphate ester 198.2kg (1000mol);

[0036] Step 3: Take 3 kg of dibutane phosphite g...

Embodiment 3

[0040] Step 1: Feed 148.24kg (2000mol) of n-butanol and 82kg (1000mol) of phosphorous acid into the reaction kettle, fill it with nitrogen protection, stir and heat to 135°C, keep it warm for 3.5 hours, and steam off the water under reduced pressure to obtain dibutanesulfide Phosphate ester 198.2kg (1000mol);

[0041] Step 2: Add 74.12kg (1000mol) of n-butanol and 6kg of potassium hydroxide into the polymerization kettle cooled by ice-salt water circulation at about 0°C and stir, then pass nitrogen into the polymerization kettle to convert the air in the kettle, when the nitrogen in the polymerization kettle While maintaining the positive pressure, push 1081.5kg (15000mol) butylene oxide into the polymerization kettle with a nitrogen feed tank, while stirring to raise the temperature to 110-120°C, and adjust the pressure to 0.3MPa. The extruded polymer is polyoxybutylene monobutyl ether 1161.62kg (containing potassium hydroxide).

[0042] Step 3: Take 4 kg of dibutane phosphi...

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Abstract

The invention discloses a capillary mold oil for an aluminum alloy casting crystallizer and a preparation method of the capillary mold oil. The mold oil comprises the following components: 3 to 5% of di-butane phosphite ester and 95 to 97% of polyoxy butene monobutyl ether. The preparation method of the mold oil comprises the following steps: adding the di-butane phosphite ester to the polyoxy butene monobutyl ether; stirring for about 1 hour at temperature of about 100 DEG C; naturally cooling; and then packaging to obtain the mold oil. The preparation method of the polyoxy butene monobutyl ether comprises the following steps: adding n-butyl alcohol and potassium hydroxide to a polymerizing kettle which is circularly cooled to be about 0 DEG C by brine ice; stirring; charging nitrogen into the polymerizing kettle to convert the air in the kettle; pushing epoxybutane into the polymerizing kettle by the nitrogen when the nitrogen is kept at positive pressure in the polymerizing kettle; stirring and heating to reach 110 to 120 DEG C at the same time; polymerizing for 12 to 13 hours at pressure of 0.25 to 0.35MPa; and extruding the polymer out of the polymerizing kettle through nitrogen, so as to obtain the polyoxy butene monobutyl ether. The mold oil disclosed by the invention is excellent in performance, less in carbon deposition at a high temperature, generates less smoke, can prolong the service life of the casting crystallizer by over 50%, and improves the quality of the surface of aluminum blank.

Description

technical field [0001] The invention belongs to the technical field of metal casting release lubricating grease, and in particular relates to an aluminum alloy casting crystallizer capillary release oil and a preparation method thereof. Background technique [0002] Aluminum alloy processing and casting demolding Traditionally, a layer of graphite grease is applied to the surface of the mold. The disadvantages of this processing technology are high labor costs, uneven manual application, serious smoke during high temperature casting, severe damage to the mold, and smooth surface of the finished product. Poor degree etc. Due to the above shortcomings, the new casting and demoulding process uses capillaries densely covered on the surface of the crystallizer, and the capillaries are filled with vegetable oil such as soybean oil or some lubricating oil with better high temperature performance for lubrication and demoulding, which overcomes the above shortcomings. High-quality c...

Claims

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Application Information

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IPC IPC(8): B22C3/00B22D11/07
Inventor 张乃庆吴启东
Owner 如东文园投资开发有限公司
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