Method for smelting TA10 titanium alloy by using electron beam cold hearth

An electron beam cooling hearth furnace and titanium alloy technology, applied in the field of titanium alloy, can solve the problems of poor distribution uniformity of TA10 alloy and excessive volatilization of Ni element, etc., and achieve the effect of fast melting speed, good surface quality and high yield

Active Publication Date: 2018-08-10
QINGHAI JUNENG TITANIUM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Baoji Titanium Industry Co., Ltd. and Yunnan Titanium Industry Co., Ltd. respectively conducted research on the one-time forming process of electron beam cold hearth furnace melting of TA10 titaniu

Method used

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  • Method for smelting TA10 titanium alloy by using electron beam cold hearth
  • Method for smelting TA10 titanium alloy by using electron beam cold hearth
  • Method for smelting TA10 titanium alloy by using electron beam cold hearth

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0069] Example 1 Pressing of material block 1#~5# and comparative sample block D1#-D2#

[0070] The raw materials containing titanium, nickel and molybdenum are mixed to form the same accurate quality raw material block, the raw material block is pressed into a specific size material block, and dried. The composition and preparation conditions of the materials of block 1#~5# are shown in Table 1.

[0071] Table 1

[0072]

[0073] Take material block 1# as a typical representative to illustrate the preparation method of material block, the preparation process is as follows:

[0074] a. The total weight of titanium sponge (grade 0) and Ni-Mo master alloy is 640Kg. After mixing, all materials are compressed into raw material blocks with a weight of 20Kg / block (including titanium sponge 19.77kg and master alloy 0.23kg), totaling 32 yuan;

[0075] b. The size of the pressed alloy block is: 200mm×200mm×170mm;

[0076] c. Each electronic scale must be calibrated before use, and the measureme...

Example Embodiment

[0078] Example 2 Feeding method of material block 1#~5# and comparative sample block D1#~D2#

[0079] Put the prepared material blocks 1#~5# and the comparative sample blocks D1#~2# into the feeder 3 of the electron beam cooling bed smelting furnace as shown in Table 2 to melt TA10 titanium alloy. Block 1# is a typical representative to explain the stacking rules of material blocks, the stacking requirements are:

[0080] a. Overall requirements for stacking

[0081] The stacking rules on the left: 4 blocks per row, single-layered, a total of 16 alloy blocks, a total of 4 rows;

[0082] The stacking rules on the right: 4 blocks in each row, single-layered, a total of 16 alloy blocks, a total of 4 rows.

[0083] b. The specific stacking position is shown in Table 2: (A represents the feed block in the lance and ingot bottom making stage, B represents the feed block in the stable smelting stage)

[0084] Table 2

[0085]

[0086]

Example Embodiment

[0087] Example 3 Preparation of casting ingots 1#~5# and comparative ingots D1#~D2#

[0088] The material blocks 1#~5# prepared in Example 1 and the comparative sample blocks D1#~2# were placed in the feeder according to the stacking rules of Example 2, and were smelted in the electron beam cooling bed furnace through the following steps to prepare castings. The ingots are marked as casting ingots 1#~5# and comparative ingots D1#~D2#. The smelting process of the electron beam cooling bed furnace includes the following stages:

[0089] (1) Start the electron gun stage

[0090] Gun-opening stage: heating the condensing shell without melting it, and observe the vacuum change in the furnace. During the oven drying period, the current range of 1~5# gun should be strictly controlled to be no more than 5.0A; at the same time, the current range of 6~7# gun should be started to be no more than 2.0A to preheat the bottom support. After confirming that all the electron guns are in no abnormal...

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Abstract

The invention discloses a method for smelting a TA10 titanium alloy by using an electron beam cold hearth, and belongs to the field of titanium alloys. The method comprises the following steps that (1), materials containing titanium, nickel and molybdenum are mixed and pressed into a material block, and then the material block is dried; and (2) the dried material block is subjected to smelting byusing the electron beam cold hearth, and the TA10 titanium alloy is obtained. Electron beam cold hearth smelting comprises a gun starting stage, a casting ingot bottom making stage, and a stable smelting stage; and the electron beam cold hearth comprises a melting zone, a refining zone and a crystallization zone which are sequentially adjoined, the power of the melting zone in the stable smeltingstage is 800-1100 Kw, the power of the refining zone is 150-180 Kw, and the power of the crystallization zone is 180-210 Kw. The TA10 titanium alloy prepared through the method is good in element distribution uniformity and surface quality.

Description

technical field [0001] The application relates to a method for melting a TA10 titanium alloy by using an electron beam cold hearth furnace, which belongs to the field of titanium alloys. Background technique [0002] With the rapid growth of the amount of titanium alloy used in the aviation industry, the metallurgical quality of the alloy is becoming more and more important. According to statistics from various countries, many flight accidents are caused by premature failure due to metallurgical defects of titanium alloy components. In order to produce high-quality and high-clean titanium alloys for aero-engine rotating parts, in the late 1980s, the cooling bed melting technology was introduced internationally. , has unique advantages in the production of titanium alloy ingots for key aviation components. Electron beam cold hearth furnace smelting (abbreviated as EB) technology can not only eliminate high-density and low-density inclusions, but also recover a large amount ...

Claims

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Application Information

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IPC IPC(8): C22B9/22C22C1/03C22C14/00
CPCC22B9/228C22C1/03C22C14/00
Inventor 周武赵统福杜彬陈生李明
Owner QINGHAI JUNENG TITANIUM IND CO LTD
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