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Method for adding iron in titanium and titanium alloy ingots

A titanium alloy and ingot casting technology, which is applied in the field of titanium and titanium alloy preparation, can solve the problems of uneven mixing, increased operation difficulty, and difficult composition ratio, so as to improve distribution uniformity, reduce production cost, and implement difficulty small effect

Active Publication Date: 2020-08-04
宁夏中色金航钛业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing method of adding iron to titanium and titanium alloys, because the density, shape, particle size of iron (iron nails, iron powder, iron beads, short iron wire or iron intermediate alloy) is quite different from that of the matrix sponge titanium, when mixing materials Iron may be locally enriched in the electrode block, resulting in uneven iron distribution during mixing, and even a part of iron loss during the electrode preparation process
Using iron-containing master alloys to add iron is a solution, but the cost of ferrous master alloys is high, and it is difficult to distribute the components containing multiple elements, and it cannot fundamentally solve the problem of uneven mixing
[0003] Iron is easy to segregate in titanium and titanium alloys, which is affected by the concentration difference of iron in the liquid phase and solid phase of titanium and titanium alloys, and has nothing to do with the type of raw materials added. The main method to solve the problem of iron segregation in electrode preparation is reverse Segregated cloth, but the current method of reverse segregation cloth is more complicated, it is necessary to prepare reverse segregation mandrel or adopt multiple cloth methods, which increases the cost or increases the difficulty of operation
[0004] In addition, when the consumable electrode is made of bulk material instead of sponge titanium (master alloy) mixture, it may be necessary to adjust its overall or local iron content, and it is extremely difficult to add iron according to the existing method

Method used

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  • Method for adding iron in titanium and titanium alloy ingots
  • Method for adding iron in titanium and titanium alloy ingots

Examples

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Embodiment 1

[0026] A method for adding iron in titanium and titanium alloy ingots, the method for adding iron in the titanium and titanium alloy ingots comprises the following steps,

[0027] Step (a), this example material is the lower TC4 material head of iron content, and its forging machine adds φ 96mm round bar;

[0028] In step (b), the electrode blocks forged in step (a) are sequentially welded along the axial direction of the electrode blocks to form electrode rods;

[0029] Step (c), according to the target composition and the needs of reverse segregation cloth, calculate the amount of iron that needs to be added to the electrode, and select the specification and quantity of the iron wire 02 that needs to be added. The diameter of the iron wire 02 is not greater than 8.5mm, and the length is not greater than the total length of the electrode. In this embodiment, we choose three 14# iron wires 02, whose diameter is about 2mm;

[0030] In step (d), the electrode rod assembled and ...

Embodiment 2

[0034] A method for adding iron in titanium and titanium alloy ingots, the method for adding iron in the titanium and titanium alloy ingots comprises the following steps,

[0035] Step (a), the material of this embodiment is a number of low-iron TC4 rods with similar components, which are forged into square rods with a size of 150×150×Lmm, and subjected to surface treatment to obtain electrode block 01;

[0036] Step (b), combining the electrode block 01 obtained in step (1) into an electrode with a specification of 150×300×Lmm and welding it;

[0037] Step (c), according to the target composition and the needs of reverse segregation cloth, calculate the amount of iron that needs to be added to each electrode, and select the specification and quantity of iron wire 02 that needs to be added. The diameter of iron wire 02 is not greater than 8.5mm, and the length is not greater than the total electrode Length, in the present embodiment, we select 3 10# iron wires 02 for use, and ...

Embodiment 3

[0043] A method for adding iron in titanium and titanium alloy ingots, the method for adding iron in the titanium and titanium alloy ingots comprises the following steps,

[0044]Step (1), first calculate the content of sponge titanium, aluminum vanadium alloy, aluminum beans and titanium dioxide in the electrode block according to the content of other elements except iron in the electrode block to be prepared, and weigh the sponge titanium, aluminum Mix the vanadium alloy, aluminum beans and titanium dioxide evenly, then add the mixed materials into the mold and weigh them, then mix the cloth normally. ;

[0045] In step (2), use the stamping head of the punching machine to squeeze the mold cavity, thereby completing the pressing of the electrode block 01. In order to fix the iron wire added later, a non-essential measure that can be taken is to make the upper and lower surfaces of the electrode block 01 along the electrode block 01 A groove 11 is formed in the axial directi...

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Abstract

The invention discloses a method for adding iron in titanium and titanium alloy ingots. A traditional method is characterized in that iron nails, iron powder or iron intermediate alloys are added intoa raw material, and then mixed and pressed into an electrode, and unlike the traditional method, the method for adding iron in the titanium and titanium alloy ingots is characterized in that iron elements missing in titanium and titanium alloys needing to be prepared are added as long iron wires, so that the distribution uniformity of the iron in the axial direction of the electrode is improved,and reverse segregation distribution is achieved by utilizing the position, the diameter and the length of the iron wires; meanwhile, the difficulty of iron adding when the electrode is formed by non-mixed pressed electrode blocks such as reclaimed material ends is overcome, difficulties in batching calculation and implementation are small by adding the iron wires, and only a small amount of manual work is added without influence on electrode molding and group welding efficiency; and the cost of the iron wires is much less than that of the iron intermediate alloys, and therefore the productioncost can be reduced.

Description

technical field [0001] The invention relates to the technical field of titanium and titanium alloy preparation, in particular to a method for adding iron to titanium and titanium alloy ingots. Background technique [0002] The existing method of adding iron to titanium and titanium alloys, because the density, shape, particle size of iron (iron nails, iron powder, iron beads, short iron wire or iron intermediate alloy) is quite different from that of the matrix sponge titanium, when mixing materials Iron may be locally enriched in the electrode block, resulting in uneven iron distribution during mixing, and even a part of iron loss during electrode preparation. The use of iron-containing master alloys to add iron is a solution, but the cost of iron-containing master alloys is high, and the distribution of various elements is difficult, and it cannot fundamentally solve the problem of uneven mixing. [0003] Iron is easy to segregate in titanium and titanium alloys, which is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00C22B9/20C22B34/12C22C14/00C22C1/02
CPCB23P15/00C22B9/20C22B34/12C22C14/00C22C1/02Y02P10/20
Inventor 胡革全刘彦昌李永林沈立华李培强董春芳王璐韩伟松唐寿全
Owner 宁夏中色金航钛业有限公司
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