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Forming method for Ti-based graphene composite powder

A graphene composite and molding method technology is applied in the field of molding of titanium-based graphene composite powder, and can solve the problems affecting the qualified rate of bulk titanium-based graphene composite materials, the deterioration of pressing performance of titanium-based composite powder, and the easy separation of green bodies. Layer breakage and other problems, to achieve the effect of good molding effect, easy demoulding, and prevention of layer breakage

Active Publication Date: 2017-03-29
CHINA WEAPON SCI ACADEMY NINGBO BRANCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the unique sheet structure of graphene and the high viscosity of titanium-based materials, the above molding methods often lead to a sharp deterioration in the compression performance of the titanium-based composite powder after adding graphene, and the pressed body is easily delaminated and broken. The bulk forming rate is low, which seriously affects the finished product qualification rate of bulk titanium-based graphene composites

Method used

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  • Forming method for Ti-based graphene composite powder
  • Forming method for Ti-based graphene composite powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The molding method of the titanium-based graphene composite powder of the present embodiment comprises the following steps:

[0028] (1) Pre-compression

[0029] First coat the ethanol solution of stearic acid with a concentration of 0.1g / mL on the first half shell 1, the second half shell 2, the lower punch block 3, and the upper punch block 4 respectively. After the ethanol is completely volatilized, apply the first The half-shell 1 and the second half-shell 2 are combined to form a cylindrical shell 10, the lower punch 3 is placed on the lower part of the cylindrical shell 10, and the first clamp 5 is placed on the lower part of the outer circumference of the cylindrical shell 10 and locked; The upper port of the shell 10 fills the titanium-based graphene composite powder with a graphene content of 0.1 wt% in the cylindrical shell 10. After filling, the upper punch block 4 is placed on the top of the cylindrical shell 10, and the second clamp 6 Sleeve on the upper p...

Embodiment 2

[0035] The molding method of the titanium-based graphene composite powder of the present embodiment comprises the following steps:

[0036] (1) Pre-compression

[0037]First coat the ethanol solution of stearic acid with a concentration of 0.08g / mL on the first half shell 1, the second half shell 2, the lower punch block 3, and the upper punch block 4 respectively. After the ethanol is completely volatilized, apply the first The half-shell 1 and the second half-shell 2 are combined to form a cylindrical shell 10, the lower punch 3 is placed on the lower part of the cylindrical shell 10, and the first clamp 5 is placed on the lower part of the outer circumference of the cylindrical shell 10 and locked; The upper port of the shell 10 fills the titanium-based graphene composite powder with a graphene content of 0.8wt% in the cylindrical shell 10. After the filling is completed, the upper punch block 4 is placed on the top of the cylindrical shell 10, and the second clamp 6 Sleev...

Embodiment 3

[0043] The molding method of the titanium-based graphene composite powder of the present embodiment comprises the following steps:

[0044] (1) Pre-compression

[0045] First coat the ethanol solution of stearic acid with a concentration of 0.12g / mL on the first half shell 1, the second half shell 2, the lower punch block 3, and the upper punch block 4 respectively. After the ethanol is completely volatilized, apply the first The half-shell 1 and the second half-shell 2 are combined to form a cylindrical shell 10, the lower punch 3 is placed on the lower part of the cylindrical shell 10, and the first clamp 5 is placed on the lower part of the outer circumference of the cylindrical shell 10 and locked; The upper port of the shell 10 fills the titanium-based graphene composite powder with a graphene content of 1.5 wt% in the cylindrical shell 10. After the filling is completed, the upper punch block 4 is placed on the top of the cylindrical shell 10, and the second clamp 6 Sle...

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Abstract

The invention relates to a forming method for Ti-based graphene composite powder. The forming method comprises the following steps that pre-pressing, pretreatment and re-pressing are conducted, specifically, stearic acid alcoholic solution is smeared on the inner surface of a pre-pressing mould firstly, the Ti-based graphene composite powder is weighed, taken and poured into the mould, and the powder is pressed into a pre-pressing blank by adopting a manual type press machine ; then demoulding is conducted by manual operation, and the pre-pressing blank is placed into a vacuum packaging bag and subjected to vacuum sealing and packaging by adopting a vacuum sealing and packaging machine; and finally the vacuum sealed and packaged pre-pressing blank is pressed again by means of cold isostatic pressing, and a final blank is obtained. The whole pressing process is simple, and the preliminary-forming pre-pressing blank is obtained after pre-pressing. Due to the fact that the mould is convenient to demould, the preliminary-forming effect of the obtained pre-pressing blank is good, the pre-pressing blank can be protected against layered breaking through further vacuum pretreatment, and pressing density and intensity of the blank are further reinforced through re-pressing of cold isostatic pressing, so that the blank with a good forming effect is obtained, and the forming rate of the blank is improved.

Description

technical field [0001] The invention relates to a molding method of titanium-based graphene composite powder. Background technique [0002] At present, the preparation of bulk titanium-based graphene composites is mainly based on powder metallurgy, which is mainly prepared through the process of ball milling mixing-granulation-compression-sintering. [0003] For example, the Chinese invention patent application "A Graphene Reinforced Titanium-based Composite Material and Its Preparation Method" (Application No.: CN201510685207.1) with the application publication number CN105132742A discloses a method in which graphene powder is mixed with anhydrous Ultrasonic dispersion after mixing ethanol, adding titanium powder under stirring to obtain a mixed slurry; then transferring the obtained mixed slurry to a ball mill tank for ball milling; removing the absolute ethanol in the slurry after ball milling to obtain a powder; Dry the powder in a vacuum drying oven to obtain a dried p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/02B22F3/04B22F3/03C22C1/05C22C1/10C22C14/00
CPCB22F3/02B22F3/03B22F3/04B22F2003/026B22F2998/10C22C1/05C22C14/00
Inventor 杨文智王志锋黄伟陈子明黄伟明尚福军
Owner CHINA WEAPON SCI ACADEMY NINGBO BRANCH
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