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Process for continuous casting of ingots composed of titanium or titanium alloys

A titanium alloy and ingot technology, which is applied in the field of continuous casting of ingots composed of titanium or titanium alloys, can solve the problems of reduced yield and increased working hours, and achieve the effect of suppressing surface defects

Inactive Publication Date: 2017-05-31
KOBE STEEL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, if the casting surface of the ingot to be cast has irregularities or scratches, it is necessary to perform pretreatment such as cutting on the surface before rolling, which causes a decrease in yield and an increase in man-hours.

Method used

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  • Process for continuous casting of ingots composed of titanium or titanium alloys
  • Process for continuous casting of ingots composed of titanium or titanium alloys
  • Process for continuous casting of ingots composed of titanium or titanium alloys

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Embodiment Construction

[0033] Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In addition, in the following description, the case where titanium or a titanium alloy is melt|dissolved with a plasma arc is demonstrated.

[0034] (Construction of continuous casting equipment)

[0035] In the continuous casting method of an ingot made of titanium or titanium alloy according to the present embodiment, the molten titanium or titanium alloy melted by plasma arc is poured into a bottomless mold, and it is discharged from below while being solidified. Ingots made of titanium or titanium alloys are thus cast continuously. A continuous casting device 1 for an ingot made of titanium or a titanium alloy that implements the continuous casting method, such as a three-dimensional figure 1 and section figure 2 As shown, it has: casting mold 2; cold hearth 3; feeding device 4; plasma torch 5; starting frit 6; plasma torch 7. The continuous casting dev...

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Abstract

By controlling the temperature Ts of the surface portion (11a) of the ingot (11) in the contact region (16) of the mold (2) and the ingot (11), and the surface portion of the contact region (16) from the ingot (11) (11a) At least one of the passing heat fluxes q to the casting mold (2) makes the thickness D of the contact region (16) of the solidified shell (13) of the molten (12) solidified within a predetermined range. Thereby, an ingot with a good state of the casting skin can be cast.

Description

technical field [0001] The present invention relates to a continuous casting method for an ingot made of titanium or a titanium alloy, which continuously casts an ingot made of titanium or a titanium alloy. Background technique [0002] Ingots are continuously cast by pouring metal melted by vacuum arc melting or electron beam melting into a bottomless mold and discharging it from below while solidifying. [0003] Patent Document 1 discloses an automatically controlled plasma arc melting casting method, which is a method of plasma arc melting titanium or titanium alloy in an inert gas atmosphere, pouring it into a mold and solidifying it. Plasma arc melting in an inert gas atmosphere is different from electron beam melting in vacuum, and not only pure titanium but also titanium alloys can be cast. [0004] prior art literature [0005] patent documents [0006] Patent Document 1: Japanese Patent No. 3077387 [0007] The problem to be solved by the invention [0008] How...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/00B22D11/041B22D11/055
CPCB22D11/188B22D11/207B22D11/22B22D11/117F27D2099/0031B22D11/041B22D11/001B22D11/00B22D11/055B22D21/022B22D23/10
Inventor 黑泽瑛介中冈威博堤一之大山英人金桥秀豪石田齐高桥大喜松若大介
Owner KOBE STEEL LTD