Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of aluminum strontium tungsten master alloy and preparation method thereof

A technology of aluminum-strontium master alloy and master alloy, which is applied in the field of aluminum-strontium-tungsten master alloy and its preparation, can solve the problems of increasing impurities, increasing process links, and excessive, so as to reduce porosity, improve mechanical properties, and obtain high rate effect

Active Publication Date: 2019-04-16
ZHONGBEI UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the modification process of the eutectic Si phase and the iron-rich phase in this treatment process is carried out separately, that is, the aluminum-strontium master alloy and the aluminum-manganese master alloy are used to modify silicon and iron respectively. Large working hours and increased production costs also increase the chance of introducing impurities

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of aluminum strontium tungsten master alloy and preparation method thereof
  • A kind of aluminum strontium tungsten master alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Weigh 99g aluminum strontium master alloy, 1g WO 3 ; Take CaF with a mass ratio of 1:35:35:1 2 , NaCl, KCl, Na 3 AlF 6 A total of 10g was mixed to form a flux, and mixed with WO 3 Mix to form a mixed powder; ball mill the mixed powder under vacuum protection, the ball milling speed is 350rpm, the ball to material ratio is 10:1, and the ball milling time is 8h; the mixed powder after ball milling is preheated to 400°C for 30min, and the Al-10Sr intermediate The alloy is heated to 800°C in a resistance furnace to melt, and the preheated mixed powder is wrapped with aluminum foil and pressed into the melt, and treated by acoustic-magnetic coupling for 10 minutes; the ultrasonic power is 1KW, and the frequency is 10KHz; Put it in place for 5 minutes to remove the slag and take it out of the furnace for casting.

Embodiment 2

[0031] Weigh 90g Al-Sr master alloy, 10g WO 3 ; Take by weighing CaF with a mass ratio of 10:45:45:10 2 , NaCl, KCl, Na 3 AlF 6 A total of 20g was mixed to form a flux, and mixed with WO 3 Mix to form a mixed powder; ball mill the mixed powder under vacuum protection, the ball milling speed is 350rpm, the ball-to-material ratio is 10:1, and the ball milling time is 8h; the ball-milled mixed powder is preheated to 500°C for 120min, and the Al-10Sr intermediate The alloy is heated to 800°C in a resistance furnace to melt, and the preheated mixed powder is wrapped with aluminum foil and pressed into the melt, and treated by acoustic-magnetic coupling for 10 minutes; the ultrasonic power is 1KW, and the frequency is 10KHz; Set it for 10 minutes to remove the slag and take it out of the furnace for casting.

Embodiment 3

[0033] Weigh 95g aluminum strontium master alloy, 5g WO 3 ; Take by weighing the CaF that mass ratio is 3:38:38:3 2 , NaCl, KCl, Na 3 AlF 6 A total of 15g was mixed to form a flux, and mixed with WO 3 Mix to form a mixed powder; ball mill the above mixed powder under vacuum protection, the ball milling speed is 350rpm, the ball-to-material ratio is 10:1, and the ball milling time is 8h; the ball-milled mixed powder is preheated to 450°C for 90min, The master alloy is melted by heating to 800°C in a resistance furnace, and the preheated mixed powder is wrapped with aluminum foil and pressed into the melt, and treated by acoustic-magnetic coupling for 10 minutes; the ultrasonic power is 1KW, and the frequency is 10KHz; after the treatment is completed Stand still for 15 minutes, remove the slag and take it out of the furnace for casting.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an aluminum strontium tungsten intermediate alloy and a preparation method thereof and belongs to the technical field of novel materials and metallurgy. With the adoption of the technical scheme, the aluminum strontium tungsten intermediate alloy comprises an ingredient of AlSr10Wx (x ranges from 1 to 5), wherein AlSr10Wx contains 10wt.% of Sr, 1wt.%-5wt.% of W and the balance of Al; WO3 and a solvent formed by CaF2, NaCl, KCl and Na3AlF6 are mixed and preheated after being subjected to ball milling; the preheated mixed powder is wrapped with an aluminum foil and pressed into a molten aluminum strontium intermediate alloy, and acoustomagnetic coupling treatment is performed for 5-20 min; a product is left to stand for 5-15 min after being treated, and slagging-off, discharge from a furnace and casting are performed. The yield of the aluminum strontium tungsten intermediate alloy prepared with the scheme is high; the prepared aluminum strontium tungsten intermediate alloy can modify the eutectic silicon phase in the cast aluminum-silicon alloy and the iron-rich phase, the modification effect of the iron-rich phase in the regenerated aluminum alloy can be strengthened, and the mechanical property of the aluminum alloy can be improved.

Description

technical field [0001] The invention belongs to the technical field of new materials and metallurgy, and in particular relates to an aluminum-strontium-tungsten master alloy used for modification of a cast aluminum-silicon alloy and a preparation method thereof. Background technique [0002] In cast aluminum-silicon alloys (such as ADC12, A356 aluminum alloy, etc.), the unmodified eutectic silicon phase exists in the form of coarse needles or flakes and severely splits the matrix. Therefore, in order to improve the overall performance of the alloy in the actual industry, it is generally necessary to modify the eutectic Si phase of the cast Al-Si alloy. [0003] In addition, adding a small amount of tungsten to the aluminum alloy can change the morphology of the iron-rich phase in the aluminum alloy, eliminate the acicular iron-rich phase, refine the bone-like iron-rich phase, and even granulate it, thereby reducing the iron-rich phase in the Hazards in aluminum alloys. The...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C1/03
CPCC22C1/03C22C21/00
Inventor 张文达白培康陈诚诚杨晶
Owner ZHONGBEI UNIV