Nickel molybdenum titanium intermediate alloy and preparation method thereof

A master alloy, nickel-molybdenum technology, applied in the field of nickel-molybdenum-titanium master alloy and its preparation, can solve the problems of high density, affect the performance of titanium alloy, and high melting point of metal molybdenum, and achieve simple production process, stable product quality, and uniform element distribution. Effect

Active Publication Date: 2013-11-20
宝钛特种金属有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high melting point (2615°C) and high density (10.2g/cm2) of metal molybdenum 3 ), the melting of molybdenum and titanium-molybdenum alloy additives is insufficien

Method used

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  • Nickel molybdenum titanium intermediate alloy and preparation method thereof
  • Nickel molybdenum titanium intermediate alloy and preparation method thereof

Examples

Experimental program
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Example Embodiment

[0017] Example 1

[0018] Step 1: Calculate according to the target composition of the nickel-molybdenum-titanium master alloy. The feed amount is 15kg. Weigh the required weight of electrolytic nickel 10.5kg, molybdenum slab 4.43kg, and sponge titanium 0.07kg.

[0019] Step 2: Place the electrolytic nickel and molybdenum slabs in the crucible of the intermediate frequency induction furnace in order, and place the titanium sponge in the gap between the above two raw materials.

[0020] Step 3: When the vacuum degree is 20Pa, the intermediate frequency induction furnace is powered on, the starting power is 10kw, and the maximum power does not exceed 50kw. After the materials are completely melted, the power is cut off after overheating for 5 minutes, and when the temperature drops to 1300~1350℃, it is cast into a cylindrical ingot.

[0021] Step 4: Sample the upper and lower parts of the ingot for chemical composition analysis. The analysis results of the upper and lower parts are sho...

Example Embodiment

[0024] Example 2

[0025] Step 1: Calculate according to the target composition of the nickel-molybdenum-titanium master alloy. The feed amount is 13kg. Weigh the required weight of 9.1kg nickel scrap, 3.83kg molybdenum scrap, and 0.07kg pure titanium scrap.

[0026] Step 2: Place nickel scraps and molybdenum scraps in the crucible of the intermediate frequency induction furnace in order, and add pure titanium scraps in the gap between the above two raw materials.

[0027] Step 3: When the vacuum degree is 15Pa, the intermediate frequency induction furnace is powered on, the starting power is 10kw, and the maximum power does not exceed 50kw. After the materials are completely melted, the power is cut off after overheating for 6 minutes, and when the temperature drops to 1300~1350℃, it is cast into a cylindrical ingot.

[0028] Step 4: Sample the upper and lower parts of the ingot for chemical composition analysis. The analysis results are shown in the table below. The analysis resul...

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Abstract

The invention relates to a nickel molybdenum titanium intermediate alloy. The alloy comprises the following components in percentage by weight: 68-72% of Ni, 28-32% of Mo, and 0.4-0.6% of Ti. A preparation method comprises the following steps of: firstly, calculating and weighing the required raw materials according to the components of the alloy; secondly, putting the raw materials into a crucible of a medium-frequency induction furnace, wherein the raw material of nickel and the raw material of molybdenum are in crossed placement, and the raw material of titanium is put at the gap of the two raw materials; thirdly, after low vacuum degree medium-frequency induction melting, casting into cylindrical ingots at 1300-1350 DEG C; fourthly, turning the cylindrical ingots into scraps. The added titanium element is conductive to overcoming the defect that the intermediate alloy is mingled with high-density molybdenum, the chemical components of the prepared nickel molybdenum titanium intermediate alloy are stable and uniform, the deviation of the main components is not more than 0.5%, and the preparation method is conductive to producing excellent titanium alloy ingots which are segregation-free and have no metallurgy mingling defect and comprise uniformly distributed elements of molybdenum and nickel.

Description

technical field [0001] The invention belongs to the technical field of master alloys, and in particular relates to a nickel-molybdenum-titanium master alloy and a preparation method thereof. Background technique [0002] When the existing titanium alloy is smelted, there are two ways to add the alloy in the form of nickel and molybdenum pure metal, and in the form of titanium-molybdenum alloy and metal nickel. Due to the high melting point (2615°C) and high density (10.2g / cm2) of metal molybdenum 3 ), the melting of molybdenum and titanium-molybdenum alloy additives is insufficient, there is a hidden danger of forming high-density inclusions, and it is difficult to obtain ingots with uniform composition, which affects the performance of titanium alloys. Contents of the invention [0003] The technical problem solved by the present invention is to design a nickel-molybdenum-titanium master alloy and its preparation method. When the titanium alloy is smelted, the alloy is a...

Claims

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Application Information

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IPC IPC(8): C22C19/03C22C1/02
Inventor 和平志李彦宏陈战乾宋文君尹淑霞陈峰刘红王昌建郭盛祥刘敏国斌郑博龙
Owner 宝钛特种金属有限公司
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