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

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

Example Embodiment

[0027] Example 1:

[0028] Step 1: feed 148.24kg (2000mol) n-butanol and 82kg (1000mol) phosphorous acid into the reactor, fill with nitrogen protection and stir and heat to 130 ° C, keep the temperature for 4 hours, steam out the water under reduced pressure to obtain dibutane sulfite. Phosphate ester 198.2kg (1000mol);

[0029] Step 2: 74.12kg (1000mol) n-butanol and 15kg potassium hydroxide were added to the polymerization kettle cooled by ice brine circulation at about 0°C and stirred, then nitrogen was passed into the polymerization kettle to change the air in the kettle, when the nitrogen in the While maintaining the positive pressure, 1442.2kg (20000mol) of butylene oxide was pushed into the polymerization kettle with a nitrogen feed tank, and the temperature was raised to 110-120°C with stirring, and the pressure was adjusted to 0.25MPa. The polymer was extruded to obtain 1531.32kg of polyoxybutene monobutyl ether (containing potassium hydroxide).

[0030] Step 3: Ta...

Example Embodiment

[0033] Example 2:

[0034] Step 1: 74.12kg (1000mol) of n-butanol and 4kg of potassium hydroxide are added to the polymerization kettle cooled by ice brine circulation at about 0°C and stirred, then nitrogen is passed into the polymerization kettle to change the air in the kettle, when nitrogen in the polymer kettle When maintaining the positive pressure, 721.1kg (10000mol) of butylene oxide was pushed into the polymerization kettle with a nitrogen feed tank, and the temperature was raised to 120°C with stirring, and the pressure was adjusted to 0.35MPa. The material is extruded, that is, polyoxybutene monobutyl ether 799.22kg (containing potassium hydroxide).

[0035] Step 2: feed 148.24kg (2000mol) n-butanol and 82kg (1000mol) phosphorous acid into the reactor, fill with nitrogen protection and stir and heat to 140 ° C, keep the temperature for 3 hours, steam under reduced pressure to evaporate the water to obtain dibutane sulfite. Phosphate ester 198.2kg (1000mol);

[003...

Example Embodiment

[0039] Example 3:

[0040] Step 1: feed 148.24kg (2000mol) n-butanol and 82kg (1000mol) phosphorous acid into the reactor, fill with nitrogen protection and stir and heat to 135 ° C, keep the temperature for 3.5 hours, steam out the water under reduced pressure to obtain dibutane Phosphate ester 198.2kg (1000mol);

[0041] Step 2: 74.12kg (1000mol) n-butanol and 6kg potassium hydroxide are added to the polymerization kettle cooled by ice brine circulation at about 0°C and stirred, then nitrogen is passed into the polymerization kettle to change the air in the kettle, when the nitrogen in the When maintaining the positive pressure, 1081.5kg (15000mol) of butylene oxide was pushed into the polymerization kettle with a nitrogen feed tank, and the temperature was raised to 110-120°C with stirring, and the pressure was adjusted to 0.3MPa. The extruded polymer is polyoxybutylene monobutyl ether 1161.62kg (containing potassium hydroxide).

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

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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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