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Preparation method of Al2O3 short fiber reinforced composite prefabricated part

A short fiber reinforced composite material technology is applied in the field of extrusion casting molding to prepare composite materials. Control, improve production efficiency, and reduce the amount of machining

Inactive Publication Date: 2011-04-06
NO 52 INST OF CHINA NORTH IND GRP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the existing Al 2 o 3 Short fiber preforms have long manufacturing cycle, irregular shape, large amount of processing, high manufacturing cost, and are difficult to meet the shortcomings of mass production. To provide a short manufacturing cycle, regular shape, little or no processing, low manufacturing cost, and meet Al required for mass production 2 o 3 Preparation method of short fiber reinforced composite material preform

Method used

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  • Preparation method of Al2O3 short fiber reinforced composite prefabricated part
  • Preparation method of Al2O3 short fiber reinforced composite prefabricated part
  • Preparation method of Al2O3 short fiber reinforced composite prefabricated part

Examples

Experimental program
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Effect test

specific Embodiment 1

[0026] (1), Al 2 o 3 Short fiber pretreatment: Al 2 o 3 The short fibers are put into the mixing drum 6 of the mechanical liquid crushing device, and the Al 2 o 3 9 times the weight of short fiber, turn on the motor, adjust the motor speed to 80r / min, the main shaft 1 drives the main blade 5 and the auxiliary blade 3 to rotate, and the fixed shaft 4 is provided with the fixed blade 2, which is stationary, Al 2 o 3 Under the combined action of main shaft 1, main blade 5, auxiliary blade 3, fixed shaft 4, and fixed blade 2, short fibers have a 2 o 3 The short fibers were crushed, stirred for 20 minutes, left to stand for 10 minutes, drained, and then washed with tap water. Repeated twice, the Al 2 o 3 Remove short fibers and place on a clean plate.

[0027] Among them, the mechanical liquid crushing device is shown in figure 1 , which is that the main shaft 1 is provided with main blades 5 and auxiliary blades 3 from bottom to top. Correspondingly, the fixed blades 2 a...

specific Embodiment 2

[0034] (1), Al 2 o 3Short fiber pretreatment: Al 2 o 3 The short fibers are put into the mixing drum 6 of the mechanical liquid crushing device, and the Al 2 o 3 Water with 10 times the short fiber weight, turn on the motor, adjust the motor speed to 90r / min, the main shaft 1 drives the main blade 5 and the auxiliary blade 3 to rotate, and the fixed shaft 4 is provided with the fixed blade 2, which is stationary, Al 2 o 3 Under the combined action of main shaft 1, main blade 5, auxiliary blade 3, fixed shaft 4, and fixed blade 2, short fibers have a 2 o 3 The short fibers were crushed, stirred for 30 minutes, left to stand for 15 minutes, drained, and then washed with tap water. Repeated twice, the Al 2 o 3 Remove short fibers and place on a clean plate.

[0035] (2)Al 2 o 3 Drying treatment of short fibers: the pretreated Al 2 o 3 The short fibers are baked in an oven at a temperature of 180 degrees Celsius for 18 hours;

[0036] (3)Al 2 o 3 Manufacture of sho...

specific Embodiment 3

[0041] (1), Al 2 o 3 Short fiber pretreatment: Al 2 o 3 The short fibers are put into the mixing drum 6 of the mechanical liquid crushing device, and the Al 2 o 3 Water with 11 times the short fiber weight, turn on the motor, adjust the motor speed to 100r / min, the main shaft 1 drives the main blade 5 and the auxiliary blade 3 to rotate, the fixed shaft 4 is provided with the fixed blade 2, and remains still, Al 2 o 3 Under the combined action of main shaft 1, main blade 5, auxiliary blade 3, fixed shaft 4, and fixed blade 2, short fibers have a 2 o 3 The short fibers were crushed, stirred for 40 minutes, left to stand for 15 minutes, drained, and then washed with tap water. After repeating three times, the Al 2 o 3 Remove short fibers and place on a clean plate.

[0042] (2)Al 2 o 3 Drying treatment of short fibers: the pretreated Al 2 o 3 The short fibers are baked in an oven at a temperature of 200 degrees Celsius for 20 hours;

[0043] (3)Al 2 o 3 Manufactu...

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Abstract

The invention discloses a preparation method of an Al2O3 short fiber reinforced composite prefabricated part, which is characterized by comprising the following steps of: (1) pretreatment of Al2O3 short fiber; (2) drying of the Al2O3 short fiber; (3) fabrication of an Al2O3 short fiber prefabricated part; (4) drying of the Al2O3 short fiber prefabricated part; and (5) polishing of the Al2O3 short fiber prefabricated part: the Al2O3 short fiber reinforced composite prefabricated part is obtained after mechanical polishing. The invention improves the production efficiency, reduces the cost, eliminates environmental pollution through a mechanical liquid smashing device, adopts a method of vacuumized pressure filtration, and is easy to control the dimension.

Description

technical field [0001] The invention relates to the technical field of preparing composite materials by a squeeze casting molding method, in particular to Al 2 o 3 Preparation method and process of short fiber reinforced composite material preform. Background technique [0002] Squeeze casting is a casting process in which a liquid or semi-solid melt is filled with a mold under pressure, solidifies and crystallizes. Its characteristic is that during the forming and solidification process of the part, the casting pressurized part or the punch is in a movable state, so that the part crystallizes under pressure and produces a certain deformation, and obtains a fine and dense structure and high mechanical properties. [0003] Preparation of Al by Squeeze Casting 2 o 3 When short fiber reinforced composite materials are used, the reinforced fiber is firstly prefabricated into a fiber preform of a certain shape, and the prefabricated fiber preform is placed in the cavity of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C47/06C22C47/12
Inventor 高明灯侯林冲彭银江沈建明朱秀荣费良军王荣徐永东
Owner NO 52 INST OF CHINA NORTH IND GRP CORP
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