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Low-cost condensate shell for electron beam cooling bed smelting furnace and preparation method thereof

A technology of electron beam cooling bed and smelting furnace, which is applied in the field of low-cost condensate shells for electron beam cooling bed smelting furnaces and its preparation. No impact on efficiency, cost reduction, and simple operation

Active Publication Date: 2021-02-23
LUOYANG SUNRUI TI PRECISION CASTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the industry generally adopts that each brand requires a solidified shell, and there are dozens of common refractory metals and alloys. In addition to the expensive base materials, many precious metal elements are added, so the cost of a single solidified shell is high and requires more preparations. The cost of a grade is higher after the shell is condensed

Method used

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  • Low-cost condensate shell for electron beam cooling bed smelting furnace and preparation method thereof
  • Low-cost condensate shell for electron beam cooling bed smelting furnace and preparation method thereof
  • Low-cost condensate shell for electron beam cooling bed smelting furnace and preparation method thereof

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preparation example Construction

[0032] A method for preparing a low-cost condensate shell for an electron beam cooling bed smelting furnace, comprising the following steps:

[0033] Step 1. Preparation before preparation:

[0034] Lift out the original condensed shell, clean the cooling bed, measure the thickness h of the original condensed shell, and take 110%-150% of the original condensed shell thickness h as the total height H of the newly prepared condensed shell;

[0035] Step 2. Bottom base layer paving:

[0036] Take 20%-60% of the total height H of the paving material as the bottom base paving height, and use waste, residual material or low-purity metal of the same matrix material as the smelted metal to spread evenly on the bottom of the cooling bed;

[0037] Step 3, intermediate transition layer paving:

[0038] Take 5%-30% of the total height H of the paving material as the paving height of the intermediate transition layer, use smelted high-purity metal raw materials, alloys or returned materi...

Embodiment 1

[0048] Embodiment 1: Preparation of pure titanium solidified shell

[0049] Step 1. Preparation before preparation:

[0050] Lift out the original condensed shell and clean the cooling bed; measure the thickness of the original condensed shell to 95mm; determine that the height of the paving material for the newly prepared condensed shell is in the range of 110-120mm, and use 3-10mm thick pure titanium plate waste for the paving material, and the oxygen content At 0.2%-0.3%; with grade 1 sponge titanium as the raw material for making condensed shell;

[0051] Step 2. Bottom base layer paving:

[0052] The height of the base layer is set at 50-60mm, and the pure titanium plate waste is evenly spread on the bottom of the cooling bed, and the oxygen content is 0.2%-0.3%;

[0053] Step 3, intermediate transition layer paving:

[0054] The height of the transition layer paving is set at 10-30mm, and the pure titanium plate waste and sponge titanium are used to intersperse and spre...

Embodiment 2

[0064] Embodiment 2: Preparation of TC4 titanium alloy solidified shell

[0065] Step 1. Preparation before preparation:

[0066] Lift out the original condensate shell and clean the cooling bed; measure the thickness of the original condensate shell to be 101mm, and determine the height of the material to be in the range of 110-150mm; the material used for the material is TC4 alloy casting sprue, frame and other types of waste recycled and smelted many times. TC4 plate scraps with qualified components and the mixture of grade 1 sponge titanium and aluminum vanadium master alloy are used as raw materials for making solidified shells;

[0067] Step 2. Bottom base layer paving:

[0068] The base material paving height is set at 50-70mm, and the TC4 alloy casting sprue, frame and other types of waste materials recycled and smelted are used to spread evenly on the bottom of the cooling bed;

[0069] Step 3, intermediate transition layer paving:

[0070] The height of the paving...

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Abstract

The invention discloses a low-cost solidified shell for an electron beam cooling bed smelting furnace and a preparation method thereof. The solidified shell is a cladding structure, including a bottom base layer, a middle transition layer, and a top near-surface layer. The bottom base layer is made of the same matrix material as the smelted metal. Scrap, remnants or low-purity metals, the intermediate transition layer is made of smelted high-purity metal raw materials, alloys or returned materials of the same material as the smelted metal raw materials, and the top near-surface layer is made of smelted high-purity metal raw materials, alloys or the same material as the smelted metal raw materials Residual material, its preparation method includes pre-preparation preparation; bottom layer laying material; intermediate transition layer laying material; top near surface layer laying material; melting molding, when the laying is completed, the melting chamber is vacuumed, and the melting and cooling bed area is opened after the melting condition is reached , The electron guns in the refining cooling bed area, the split cooling bed area, the electron guns at the crucible and the runner mouth are not turned on or the energy of the electron guns in this area is set to 0. When the raw materials laid on the surface of the cooling bed are melted, all the electron guns are turned off, and the condensed shell is obtained. .

Description

technical field [0001] The invention relates to a preparation technology of an electron beam smelting ingot, in particular to a low-cost solidification shell for an electron beam cooling bed smelting furnace and a preparation method thereof. Background technique [0002] Electron Beam Cold Hearth Furnace Melting (EBCHM) is a vacuum smelting equipment that uses the heat generated by electron beam bombardment to smelt and purify high-temperature refractory metals in a vacuum state. The electron beam furnace is equipped with a water-cooled copper bed. The raw materials are melted in the cooling bed and flow to the water-cooled copper crucible. The surface of the cooling bed is covered with a condensate shell to avoid direct contact between the metal melt and the copper bed, thereby protecting the copper bed lining and preventing it from being cooled by the cooling bed. Material contamination. Through the scanning of the raw material and the solidified shell by the electron bea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B9/22C22C14/00
CPCC22B9/228C22C14/00
Inventor 裴腾李渤渤刘茵琪朱俊杰蒋林凡
Owner LUOYANG SUNRUI TI PRECISION CASTING