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Method for independent heating of high-temperature alloy master alloy pouring mold group and splitter plate

A technology of superalloy and shunt plate, which is used in metal processing equipment, equipment for feeding molten metal into casting molds, and manufacturing tools, etc. problems such as low temperature, to achieve the effect of improving purity, reducing macrosegregation, and shortening the solidification process

Active Publication Date: 2021-06-08
JIANGSU LONGDA SUPERALLOY MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, due to the low heating temperature of the distribution plate under the traditional mode of forming, it is necessary to use a higher pouring temperature to pour the master alloy to avoid the blockage of the distribution hole of the distribution plate, which will cause the solidification time of the master alloy ingot to prolong and make the mother alloy The size of the secondary shrinkage cavity of the alloy ingot becomes larger, and the macroscopic segregation of the alloying elements increases, resulting in a large difference in the consistency of the composition of the master alloy ingot, and even the phenomenon that the local chemical composition is unqualified

Method used

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  • Method for independent heating of high-temperature alloy master alloy pouring mold group and splitter plate
  • Method for independent heating of high-temperature alloy master alloy pouring mold group and splitter plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for independently heating a mold set for pouring a high-temperature alloy master alloy and a diverter plate, comprising the following steps:

[0028] (1) Diverter tray preparation: first check the appearance quality of the diverter tray, select a diverter tray without damage and cracks; secondly measure the size of the diversion hole at the bottom of the diversion tray, and further expand the diversion hole with a smaller diameter until the hole diameter meets the requirements; finally Grind the inner and outer surfaces of the diverter plate, and use it after purging and cleaning;

[0029] (2) Mold tube preparation: first straighten the mold tube, measure the inner diameter, outer diameter, wall thickness and length of the mold tube after the straightening is completed, and select the mold tube that meets the requirements; secondly, carry out the internal and external surface of the mold tube that meets the requirements Cleaning, check the smoothness of the inn...

Embodiment 2

[0037] A method for independently heating a mold set for pouring a high-temperature alloy master alloy and a diverter plate, comprising the following steps:

[0038] (1) Diverter tray preparation: first check the appearance quality of the diverter tray, select a diverter tray without damage and cracks; secondly measure the size of the diversion hole at the bottom of the diversion tray, and further expand the diversion hole with a smaller diameter until the hole diameter meets the requirements; finally Grind the inner and outer surfaces of the diverter plate, and use it after purging and cleaning;

[0039](2) Mold tube preparation: first straighten the mold tube, measure the inner diameter, outer diameter, wall thickness and length of the mold tube after the straightening is completed, and select the mold tube that meets the requirements; secondly, carry out the internal and external surface of the mold tube that meets the requirements Cleaning, check the smoothness of the inne...

Embodiment 3

[0047] A method for independently heating a mold set for pouring a high-temperature alloy master alloy and a diverter plate, comprising the following steps:

[0048] (1) Diverter tray preparation: first check the appearance quality of the diverter tray, select a diverter tray without damage and cracks; secondly measure the size of the diversion hole at the bottom of the diversion tray, and further expand the diversion hole with a smaller diameter until the hole diameter meets the requirements; finally Grind the inner and outer surfaces of the diverter plate, and use it after purging and cleaning;

[0049] (2) Mold tube preparation: first straighten the mold tube, measure the inner diameter, outer diameter, wall thickness and length of the mold tube after the straightening is completed, and select the mold tube that meets the requirements; secondly, carry out the internal and external surface of the mold tube that meets the requirements Cleaning, check the smoothness of the inn...

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Abstract

The invention belongs to the technical field of alloy smelting, and in particular relates to a method for independently heating a mold set for high-temperature alloy parent alloy pouring and a diverter plate. The molding method of the present invention includes the following steps: (1) Open the fiber blanket according to the diameter, quantity and combination of the mold tubes, and lay it flat on the upper part of the module; (2) Put the diverter plate into an oven at 900~1000°C , and keep warm for 2~5h; (3) put the module and fiber blanket together in an oven at 350~450°C, and keep warm for 2~5h; Fix it and send it into a vacuum induction melting furnace for pouring. The invention greatly increases the heating temperature of the splitter plate, which can avoid the hot cracking of the splitter plate, the blockage of the bottom splitter hole and the further deflation of the splitter plate, and can reduce the pouring temperature of the alloy liquid, thereby reducing the macroscopic segregation of the ingot and reducing the shrinkage cavity size , reduce the content of scum and slag in the alloy liquid, improve the purity of the alloy, and at the same time reduce the damage of the high-temperature melt to the furnace nozzle and the mold tube.

Description

technical field [0001] The invention belongs to the technical field of alloy smelting, and in particular relates to a method for independently heating a mold set for high-temperature alloy parent alloy pouring and a diverter plate. Background technique [0002] As a metal material with the highest temperature bearing capacity, superalloys are widely used in the manufacture of hot end components of aero-engines and ground gas turbines. During the pouring process of the superalloy master alloy, auxiliary materials such as the splitter plate and the mold tube will inevitably come into contact with the high-temperature melt and bring in gas, thereby combining with active elements such as Ai and Ti in the superalloy to form alumina and titanium nitride, etc. Endogenous inclusions. At the same time, foreign inclusions such as refractory materials will be brought in by the cracking of the diverter plate under the condition of intense heat. Whether internal or foreign inclusions, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D35/04B22D35/06B22D7/06B22D7/00
CPCB22D7/005B22D7/06B22D35/04B22D35/06
Inventor 王博熊兰兰李淑苹李华兵董鸿志王颜臣浦益龙
Owner JIANGSU LONGDA SUPERALLOY MATERIAL CO LTD