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

A method for preparing high-quality al-ti-b master alloy refiner by two-step feeding method

A master alloy, al-ti-b technology, applied in the field of new materials, can solve the problems of poor quality of Al-Ti-B master alloy refiner, average quality of master alloy refiner, and reduced reaction speed of fluoride salts, etc. Achieve uniform distribution, promote mass transfer and diffusion process, and reduce growth time

Active Publication Date: 2014-10-01
HUNAN JINLIANXING SPECIAL MATERIALS CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the one-time feeding method can save production time and reduce the operating intensity, but because the alloying reaction is an exothermic process, the melt temperature rises more during the one-time feeding process, and it is easy to produce long strips of TiAl. 3 phase, and because the amount of water slag in the reaction is too large, the reaction speed of the fluoride salt in the later stage is reduced, and the quality of the final Al-Ti-B master alloy refiner is poor
The secondary feeding method can avoid the shortcomings of excessive temperature rise and excessive water slag, so it is currently valued by the industry, but the traditional secondary charging process is only to add the required K 2 TiF 6 +KBF 4 The mixture is added in two parts
Therefore, the quality of the Al-Ti-B master alloy refiner produced by this secondary charging method is average, and the TiAl in the alloy structure 3 The uniformity of phase size is very poor, some reach 50~80μm, and some are ≤5μm, and the shape is also diverse, some are granular, some are long strips, and some have polygonal edges with regular edges. It meets the industry standard of Al-Ti-B master alloy refiner, but it is still far from the quality requirements of high-quality Al-Ti-B master alloy refiner

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 method for preparing high-quality al-ti-b master alloy refiner by two-step feeding method
  • A method for preparing high-quality al-ti-b master alloy refiner by two-step feeding method
  • A method for preparing high-quality al-ti-b master alloy refiner by two-step feeding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Embodiment 1: the manufacture of high-quality Al-5Ti-1B alloy wire rod

[0059] Melt 1028kg of 99.7% aluminum ingots in an aluminum melting furnace and heat them to 745°C, then pour them into a subcontractor furnace to remove impurities and oxides on the surface of the molten aluminum and prepare for the alloying process. Control the temperature in the subcontractor furnace at 700°C-750°C, and weigh 84kg of K with a purity of 98%. 2 TiF 6 and 84kg (for the required KBF 4 70% of the total) KBF with a purity of 98% 4 Raw materials, mix well in a mixer. Weigh the K just now 2 TiF 6 +KBF 4 The mixture is poured into the conical funnel of the feeder, and the feeder adds the mixture to the molten aluminum at a speed of 33 rpm. The feeding time is 6 minutes, accompanied by vigorous stirring by the mixer. After the first addition, continue to stir for 5 minutes, then let it stand for 8 minutes, stir for another 2 minutes, and finally pour out the water slag on the surfac...

Embodiment 2

[0065] Embodiment 2: the manufacture of high-quality Al-5Ti-0.5B alloy wire rod

[0066] Melt 1012kg of 99.7% aluminum ingots in an aluminum melting furnace and heat them to 749°C, then pour them into a subcontractor furnace to remove impurities and oxides on the surface of the molten aluminum and prepare for the alloying process. Control the temperature in the subcontractor furnace at 700°C-750°C, and weigh 44.1kg of K with a purity of 98%. 2 TiF 6 and 44.1kg (for the required KBF 4 70% of the total) KBF with a purity of 98% 4 Raw materials, mix well in a mixer. Weigh the K just now 2 TiF 6 +KBF 4 The mixture is poured into the conical funnel of the feeder, and the feeder adds the mixture to the molten aluminum at a speed of 33 rpm. The feeding time is 5 minutes, accompanied by vigorous stirring by the mixer. After the first addition, continue to stir for 3 minutes, then let stand for 8 minutes, stir for another 2 minutes, and finally pour out the water slag on the sur...

Embodiment 3

[0072] Embodiment 3: the manufacture of high-quality Al-5Ti-1B alloy trapezoidal block material

[0073] Melt 1021kg of 99.7% aluminum ingots in an aluminum melting furnace and heat them to 741°C, then pour them into a subcontractor furnace to remove impurities and oxides on the surface of the molten aluminum and prepare for the alloying process. Control the temperature in the subcontractor furnace at 700°C-750°C, and weigh 84kg of K with a purity of 98%. 2 TiF 6 and 84kg (for the required KBF 4 70% of the total) KBF with a purity of 98% 4 Raw materials, mix well in a mixer. weighed K 2 TiF 6 +KBF 4 The mixture is poured into the conical funnel of the feeder, and the feeder adds the mixture to the molten aluminum at a speed of 33 rpm. The feeding time is 8 minutes, accompanied by vigorous stirring by the mixer. After the first addition, continue to stir for 5 minutes, then let it stand for 8 minutes, stir for another 2 minutes, and finally pour out the water slag on the...

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

PropertyMeasurementUnit
diameteraaaaaaaaaa
sizeaaaaaaaaaa
sizeaaaaaaaaaa
Login to View More

Abstract

The present invention involves a method of two-step method to prepare high-quality Al-Ti-B intermediate alloy refiners. First, according to the chemical equation 2KBF4+K2TIF6+10 / 3AL = TIB2+3kalf4+1 / 3K3ALF6There are a small amount of excessive amounts to take a certain weight of K2TIF6 and KBF4 raw materials and mix well, and then add this part of the K2TIF6+KBF4 mixture to the aluminum fuse;The remaining K2TIF6 and KBF4 mixture are added to the melt, and the residue is dumped after the reaction is over; after the gas removal and resurrection are removed, it is directly cast into a trapezoidal block or a connected rolling machine.The present invention produces AL-TI-B products not only the size of TIB2 particles and TIAL3, but also the size of the scattered distribution is uniform, but there is no large-sized TIAL3 phase or a long strip 3 in the gold phase organization.Refined treatment for quality aluminum alloy materials.

Description

technical field [0001] The invention belongs to the material and metallurgical technology in the technical field of new materials, and relates to a method for preparing a high-quality Al-Ti-B master alloy refiner by a two-step feeding method. 2 TiK 6 and KBF 4 A production process that improves the quality of the Al-Ti-B master alloy refiner by using different ratios of raw materials. Background technique [0002] In recent years, aluminum and aluminum alloys have been widely used in high-tech fields such as machinery industry, automobile industry, aviation and military industry due to their light weight, high cost performance, beautiful appearance and good comprehensive performance. However, as people's requirements for materials are increasing day by day, especially in the high-tech field, the comprehensive performance of traditional aluminum alloys can no longer meet the needs. In order to improve the comprehensive performance of aluminum alloy materials, especially ca...

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): C22C1/03C22C21/00
Inventor 廖成伟陈建春李云龙陈欢潘春旭
Owner HUNAN JINLIANXING SPECIAL MATERIALS CO LTD