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A kind of preparation technology of bt22 titanium alloy

A preparation process and technology of titanium alloy, applied in the field of preparation technology of BT22 titanium alloy, can solve the problems of cracking, scrapped parts, economic loss, etc., and achieve the effect of low process requirements, low cost and low economic risk.

Active Publication Date: 2022-04-19
QINGHAI JUNENG TITANIUM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the size of the structure becomes larger, the amount of deformation presents an amazing amplification effect at the edge of the part; if the strength of the part is not enough to restrain the internal stress, cracking will also occur, and in severe cases, the part will be scrapped and cause huge economic losses

Method used

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  • A kind of preparation technology of bt22 titanium alloy
  • A kind of preparation technology of bt22 titanium alloy
  • A kind of preparation technology of bt22 titanium alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A kind of preparation technology of BT22 titanium alloy, comprises the steps:

[0054] Step 1: Raw material ingredients:

[0055] The percentages of metal materials required for raw material batching are: sponge titanium 81wt%, aluminum bean 0.9wt%, AlMo70 master alloy 7.65wt%, AlV55 master alloy 8.15wt%, metal chromium 1.4wt% and iron nail 0.9wt%; Take a total of 780kg of raw materials and store them separately;

[0056] Step 2: Mixing and pressing into blocks:

[0057] Add the titanium sponge, AlMo70 master alloy, AlV55 master alloy, metal chromium, iron nails and aluminum beans mentioned in step 1 into the silo of the automatic compounding equipment, after automatic weighing, press in an 80MN hydraulic press to form Material block (titanium lump);

[0058] Step 3: Cloth, Drying:

[0059] Put the block (titanium lump) pressed in step 2 according to 2 pieces in each row, put it into the drying material box in a single layer, and dry the block (titanium lump);

[0...

Embodiment 2

[0087] A kind of preparation technology of BT22 titanium alloy, comprises the steps:

[0088] Step 1: Raw material ingredients:

[0089] The percentage of metal materials required for raw material batching is: 83wt% of titanium sponge, 0.5wt% of aluminum bean, 6.6wt% of AlMo70 master alloy, 8.05wt% of AlV55 master alloy, 1.2wt% of metal chromium and 0.65wt% of iron nail; Take a total of 780kg of raw materials and store them separately;

[0090] Step 2: Mixing and pressing into blocks:

[0091] Add the titanium sponge, AlMo70 master alloy, AlV55 master alloy, metal chromium, iron nails and aluminum beans mentioned in step 1 into the silo of the automatic compounding equipment, after automatic weighing, press in an 80MN hydraulic press to form Material block (titanium lump);

[0092] Step 3: Cloth, Drying:

[0093] Put the block (titanium lump) pressed in step 2 according to 2 pieces in each row, put it into the drying material box in a single layer, and dry the block (titan...

Embodiment 3

[0121] A kind of preparation technology of BT22 titanium alloy, comprises the steps:

[0122] Step 1: Raw material ingredients:

[0123] The percentages of metal materials required for raw material batching are: 82wt% of titanium sponge, 0.6wt% of aluminum beans, 7.2wt% of AlMo70 master alloy, 8.08wt% of AlV55 master alloy, 1.3wt% of metal chromium and 0.82wt% of iron nails; Take a total of 780kg of raw materials and store them separately;

[0124] Step 2: Mixing and pressing into blocks:

[0125] Add the titanium sponge, AlMo70 master alloy, AlV55 master alloy, metal chromium, iron nails and aluminum beans mentioned in step 1 into the silo of the automatic compounding equipment, after automatic weighing, press in an 80MN hydraulic press to form Material block (titanium lump);

[0126] Step 3: Cloth, Drying:

[0127] Put the block (titanium lump) pressed in step 2 according to 2 pieces in each row, put it into the drying material box in a single layer, and dry the block (t...

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Abstract

The invention discloses a preparation process of BT22 titanium alloy, which comprises the following steps: step 1: batching of raw materials; step 2: mixing and pressing into blocks; step 3: cloth and drying; step 4: electron beam cooling bed (EB ) Furnace smelting: put the dried blocks (titanium lumps) into the feeder in sequence in step 3, and send them into the electron beam cold bed furnace for smelting, and obtain BT22 titanium alloy ingots by one smelting; step 5: The BT22 titanium alloy ingot smelted in the electron beam cooling hearth furnace in step 4 is remelted by vacuum consumable arc (VAR), and the smelted ingot is taken out from the VAR furnace for quality inspection of the ingot. Compared with the traditional multiple VAR smelting process, this process can effectively remove high and low density inclusions in the raw materials and ensure the quality of the ingot; compared with the electron beam fuse technology, the preparation process is simple, the process requirements are lower, and the cost is small. Economic risk is low.

Description

technical field [0001] The invention relates to the field of titanium alloy preparation technology, in particular to a preparation process of BT22 titanium alloy. Background technique [0002] At present, there are two main methods of producing BT22 titanium alloy: one is to use the traditional vacuum consumable arc (VAR) furnace for multiple smelting, and the process is to combine sponge titanium, aluminum vanadium alloy, aluminum molybdenum alloy, metal chromium , iron nails (or aluminum-vanadium-iron alloy) and other raw materials are mixed evenly in a certain proportion, and then pressed into an electrode block of a certain specification with a hydraulic press, welded into a "round bar" consumable electrode, and then vacuum smelted into a BT22 titanium alloy in a VAR furnace Round ingot (generally after 2-3 times of repeated melting). During the VAR smelting process, the consumable electrode drips to the bottom of the crucible after being melted by the arc, and graduall...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/03C22B9/04C22B9/22C22B9/20C22C14/00
CPCC22C1/03C22B9/04C22B9/228C22B9/20C22C14/00
Inventor 杜彬雷云清张志斌王龙王军田成良王倩张炜华
Owner QINGHAI JUNENG TITANIUM IND CO LTD