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Intermediate alloy nickel-molybdenum 30 additive for titanium-molybdenum-nickel-titanium alloy ingot, as well as production method

An intermediate alloy and titanium alloy technology, which is applied in the field of alloy manufacturing, can solve the problems of high cost, difficulty in controlling the alloy ratio of the final product, segregation of molybdenum and nickel elements, etc., and achieve quality assurance improvement, reduction of intermediate alloy cost, and uniform composition Effect

Inactive Publication Date: 2014-07-23
武侗
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Problems solved by technology

[0002] When smelting titanium-molybdenum-nickel-titanium alloy materials in China, it was previously used to add titanium-32 molybdenum and pure nickel to the sponge titanium as the master alloy. The cost of the titanium-32 molybdenum master alloy used in the old process is high, and there are still molybdenum and nickel elements. Segregation and other issues
[0003] According to the search, a nickel-molybdenum-titanium master alloy and its preparation method (CN103397225A) discloses a master alloy using the ratio of Ni68-72, Mo28-32, Ti0.4-0.6, which is found in the process of use It is not easy to control the alloy ratio of the final product

Method used

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Embodiment Construction

[0015] 1 The ratio of the master alloy: Ni: 69-73; Mo: 29-31 (weight percent).

[0016] This ratio ensures that the deviation of nickel and molybdenum elements in the titanium-molybdenum-nickel alloy ingot after the final smelting is less than 0.4%

[0017] 2 production method:

[0018] Step 1: Prepare raw materials and casting molds according to the composition ratio of the alloy

[0019] In order to ensure product quality, nickel is electrolytic nickel, molybdenum is pure molybdenum plate edge or pure molybdenum scrap; mold is heat-resistant cylindrical cast iron mold

[0020] Step 2: Melting and pouring

[0021] The equipment is a vacuum intermediate frequency furnace. Put the prepared raw materials into the vacuum intermediate frequency furnace for smelting. After the refining temperature is guaranteed to be 1500--1600°C and 20 minutes later; after adding nickel-magnesium master alloy and raising the temperature to about 1550°C, let it stand still Pouring is performed a...

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Abstract

The invention provides an intermediate alloy nickel-molybdenum 30 additive for a titanium-molybdenum-nickel-titanium alloy ingot, as well as a production method. The intermediate alloy additive comprises the following components in percentage by weight: 69-73% of Ni, and 29-31% of Mo, and the balance of impurities, wherein the total percentage of Ni and Mo is 100%. The production method comprises the following steps: according to the proportion of components in the alloy, preparing raw materials, pouring a mold, smelting and casting, sampling and analyzing, magnetically separating, manually sorting and encasing. According to the intermediate alloy nickel-molybdenum 30 additive and the production method, the intermediate alloy cost of the titanium-molybdenum-nickel-titanium alloy ingot can be lowered greatly; especially impurities of S, P and the like in nickel can be well removed by adding nickel-magnesium alloy in manufacturing, and magnesium is volatilized during the smelting process and has no residues in the ingot, therefore, the increase of harmful impurity elements in the titanium-molybdenum-nickel ingot can be better controlled.

Description

technical field [0001] The invention belongs to the technical field of alloy manufacture, in particular to the manufacture of an intermediate alloy to be added during the production of ingots of titanium alloy material titanium molybdenum nickel. Background technique [0002] When smelting titanium-molybdenum-nickel-titanium alloy materials in China, it was previously used to add titanium-32 molybdenum and pure nickel to the sponge titanium as the master alloy. The cost of the titanium-32 molybdenum master alloy used in the old process is high, and there are still molybdenum and nickel elements. problems such as segregation. [0003] According to the search, a nickel-molybdenum-titanium master alloy and its preparation method (CN103397225A) discloses a master alloy using the ratio of Ni68-72, Mo28-32, Ti0.4-0.6, which is found during use It is not easy to control the alloy ratio of the final product. At the same time, a method for preparing a nickel-molybdenum master alloy...

Claims

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Application Information

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IPC IPC(8): C22C19/03C22C1/03
Inventor 武侗
Owner 武侗
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