Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Novel-structure crucible for high-temperature alloy smelting and vacuum induction smelting process thereof

A technology of high-temperature alloy and new structure, applied in the direction of crucible furnace, process efficiency improvement, furnace type, etc., can solve the problems of scum entering the ingot, alloy liquid entering the ingot mold, and the reduction of filtering effect, so as to improve the purity, Effect of improving metallurgical quality and reducing inclusion content

Pending Publication Date: 2020-12-11
JIANGSU LONGDA SUPERALLOY MATERIAL CO LTD
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During pouring of the alloy liquid, when a filter screen with a small hole size is used, the large-sized scum will block the filter screen, resulting in a decrease in the filtering effect. The filter screen directly enters the ingot mold, so that the filter screen completely loses its filtering effect and a large amount of scum enters the ingot
Therefore, in the actual batch smelting and pouring process, a filter with a larger hole size is often used for filtering. Although large-sized scum can be filtered, small-sized scum will directly pass through the filter and enter the ingot mold. able to fundamentally control and remove

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
  • Novel-structure crucible for high-temperature alloy smelting and vacuum induction smelting process thereof
  • Novel-structure crucible for high-temperature alloy smelting and vacuum induction smelting process thereof
  • Novel-structure crucible for high-temperature alloy smelting and vacuum induction smelting process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as Figure 1~3 As shown, the present embodiment provides a new structure crucible for smelting superalloys, including a crucible body 1, wherein: a baffle 2 is vertically arranged in the crucible body 1, and the upper end of the baffle 2 is connected to the upper end of the crucible body 1. flush, there is a gap between the lower end of the baffle plate 2 and the bottom of the crucible body 1 , a filter screen 3 is set in the gap, and a gate 4 is set on the top of the crucible body 1 .

[0026] Wherein: the left and right ends of the baffle plate 2 are connected to the inner wall of the crucible body 1, the lower end of the baffle plate 2 is connected to the upper end of the filter screen 3, and the lower end of the filter screen 3 is connected to the bottom of the crucible body 1.

[0027] Wherein: the top of the right side of the crucible body 1 is provided with a gate 4 .

[0028] Wherein: the material of the baffle plate 2 is the same as that of the crucible b...

Embodiment 2

[0033] This embodiment provides a vacuum induction smelting process. The grade of the smelted alloy is K417. In terms of mass fraction, the chemical composition of the alloy is: 0.18%C, 9.0%Cr, 5.4%Al, 4.9%Ti, 3.0% Mo, 15% Co, 0.8% V, 0.017% B, 0.07% Zr, the balance is Ni, 13Kg alloy is smelted in a single furnace.

[0034] A 25Kg-capacity magnesia crucible with a middle baffle and a bottom filter is used for melting. The width of the gap between the lower end of the crucible baffle and the bottom of the crucible is about 20mm, and the filter is a zirconia-based filter with a porosity of 20PPI.

[0035] A vacuum induction melting process, wherein: comprising the following steps:

[0036] (1) Add Ni, C, Mo, Co, and Cr for smelting high-temperature alloy master alloy into the first space in the crucible for charging, and perform the first smelting after the charging is completed; after the first refining, add Nb, Ti , Al elements for the second refining and stirring; finally ad...

Embodiment 3

[0040] This example provides a new structure crucible for high-temperature alloy smelting and its vacuum induction smelting process. The grade of the smelted alloy is K417, and the chemical composition (mass fraction) of the alloy is: 0.18%C, 9.0%Cr, 5.4 %Al, 4.9%Ti, 3.0%Mo, 15%Co, 0.8%V, 0.017%B, 0.07%Zr, the balance is Ni, smelting 13Kg alloy in a single furnace.

[0041] A 25Kg-capacity magnesia crucible with a middle baffle and a bottom filter is used for melting. The width of the gap between the lower end of the crucible baffle and the bottom of the crucible is about 20mm, and the filter is a zirconia-based filter with a porosity of 20PPI.

[0042] A vacuum induction melting process, wherein: comprising the following steps:

[0043] (1) Add Ni, C, Mo, Co, and Cr for smelting high-temperature alloy master alloy into the first space in the crucible for charging, and carry out the first smelting after the charging is completed; after the first refining, add Ti, Al , V eleme...

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
widthaaaaaaaaaa
Login to View More

Abstract

The invention provides a novel-structure crucible for high-temperature alloy smelting. The novel-structure crucible comprises a crucible body; a baffle is vertically arranged in the crucible body; theupper end of the baffle is flush with the upper end of the crucible body; a gap is reserved between the lower end of the baffle and the bottom of the crucible body; a filter screen is arranged in thegap; and a sprue is formed in the top of the crucible body. The baffle inside the crucible has an adsorption effect on dross, the dross floating on the surface of alloy liquid can be adsorbed on thebaffle by slightly shaking in the furnace shaking process, the filter screen at the bottom can filter inclusions in alloy melt, and the contents of the inclusions and the dross in the poured alloy melt are effectively reduced.

Description

technical field [0001] The invention relates to the technical field of alloy smelting, in particular to a crucible with a new structure for smelting high-temperature alloys and a vacuum induction smelting process thereof. Background technique [0002] Superalloys are irreplaceable key structural materials for the manufacture of high-temperature components of aero-engines and ground gas turbines, and their purity will directly affect the performance and reliability of engines and gas turbines. During the smelting process of high-temperature alloys, due to the purity of raw materials and the reaction with the crucible during the melting process of the alloy, oxide inclusions will inevitably be generated, and at the same time, they will continue to float and accumulate to form scum. Pouring into master alloy ingots. In the subsequent casting preparation process, after the master alloy ingot is melted, the dross enters the casting along with the master alloy melt, and gradually...

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 Applications(China)
IPC IPC(8): F27B14/04F27B14/06F27B14/08F27B14/10C22B9/02C22C1/03C22C33/06
CPCF27B14/04F27B14/061F27B14/10F27B14/0806C22C1/03C22C33/06C22B9/023Y02P10/20Y02P10/25
Inventor 王博李华兵李峰董鸿志李淑苹熊兰兰王世普浦益龙
Owner JIANGSU LONGDA SUPERALLOY MATERIAL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com