Preparation method of Al*O* short fiber reinforced composite prefabricated part

A short fiber reinforced, composite material technology is applied in the field of extrusion casting molding method to prepare composite materials, which can solve the problems of long manufacturing cycle of short fiber preforms, difficult to meet mass production, irregular shapes, etc., and achieve outline size and void ratio. Easy to control, improve production efficiency, the effect of regular shape

Inactive Publication Date: 2009-11-11
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 Al*O* short fiber reinforced composite prefabricated part
  • Preparation method of Al*O* short fiber reinforced composite prefabricated part

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0026] (1), Al 2 O 3 Short fiber pretreatment: Al 2 O 3 The short fiber is put into the mixing cylinder 6 of the mechanical liquid crushing device, and Al is added 2 O 3 Water with 9 times the weight of the 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, the fixed shaft 4 is set with the fixed blade 2, static, Al 2 O 3 Under the joint action of the main shaft 1, the main blade 5, the auxiliary blade 3, the fixed shaft 4, and the fixed blade 2, the short fiber will affect the Al 2 O 3 The short fiber is pulverized, stirred for 20 minutes, allowed to stand for 10 minutes, drained of water, and then washed with tap water. Repeat twice to remove the Al 2 O 3 Remove the short fibers and place them in a clean dish.

[0027] Among them, see the mechanical liquid crushing device figure 1 , Which is that the main shaft 1 is provided with main blades 5 and auxiliary blades 3 from bottom to top....

specific Embodiment 2

[0034] (1), Al 2 O3 Short fiber pretreatment: Al 2 O 3 The short fiber is put into the mixing cylinder 6 of the mechanical liquid crushing device, and Al is added 2 O 3 Water with 10 times the weight of the short fiber, 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, the fixed shaft 4 is set with the fixed blade 2, static, Al 2 O 3 Under the joint action of the main shaft 1, the main blade 5, the auxiliary blade 3, the fixed shaft 4, and the fixed blade 2, the short fiber will affect the Al 2 O 3 The short fiber is pulverized, stirred for 30 minutes, allowed to stand for 15 minutes, drained of water, and then washed with tap water. Repeat twice to remove the Al 2 O 3 Remove the short fibers and place them in a clean dish.

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

...

specific Embodiment 3

[0041] (1), Al 2 O 3 Short fiber pretreatment: Al 2 O 3 The short fiber is put into the mixing cylinder 6 of the mechanical liquid crushing device, and Al is added 2 O 3 Water with 11 times the weight of the short fiber, turn on the motor, and adjust the motor speed to 100r / min. The main shaft 1 drives the main blade 5 and the auxiliary blade 3 to rotate, and the fixed shaft 4 is equipped with a fixed blade 2, which is stationary, Al 2 O 3 Under the joint action of the main shaft 1, the main blade 5, the auxiliary blade 3, the fixed shaft 4, and the fixed blade 2, the short fiber will affect the Al 2 O 3 The short fiber is pulverized, stirred for 40 minutes, allowed to stand for 15 minutes, drained of water, and then washed with tap water. After repeating three times, the Al 2 O 3 Remove the short fibers and place them in a clean dish.

[0042] (2)Al 2 O 3 Drying treatment of short fiber: the Al after pretreatment 2 O 3 The short fibers are baked in an oven at a temperature of 200...

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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] The squeeze casting molding method is a casting process in which a liquid or semi-solid melt is filled with a mold under pressure, solidified and crystallized. Its characteristic is that during the forming and solidification of the part, the pressurized part of the casting shape or the punch is in a movable state, so that the part will crystallize under pressure and produce a certain deformation to obtain a fine and dense structure and high mechanical properties. [0003] Preparation of Al by squeeze casting molding 2 O 3 In the case of short fiber reinforced composite materials, first prefabricate the reinforced fibers into a certain shape of fiber preforms, preset the fabricated fiber preforms in the mol...

Claims

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Application Information

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Patent Type & Authority Applications(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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