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A kind of manufacture method of molybdenum alloy boat

A production method and molybdenum alloy technology are applied in the field of molybdenum alloy boat production, which can solve the problem of high cost of molybdenum boats, and achieve the effects of improving room temperature brittleness, improving strength and toughness, and increasing recrystallization temperature.

Active Publication Date: 2017-08-18
LUOYANG SIFON ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention prepares special equipment for preparing molybdenum boats, and the cost of preparing molybdenum boats is relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A method for making a molybdenum alloy boat, comprising the following steps:

[0034] (1) Preparation of molybdenum slab:

[0035] a. Ingredients: Molybdenum slabs are prepared from the following raw materials in weight percentage: Al(NO 3 ) 3 : 1.0%, La(NO 3 ) 3 : 3.0%, TiH 2 : 1.2%, polyethylene glycol 2000: 0.4%, silicon powder: 0.5%, the balance is molybdenum powder and unavoidable impurities, and all raw materials are 100%, the Fischer particle size of the molybdenum powder used in the present invention≤4μm, Al(NO 3 ) 3 , La(NO 3 ) 3 Fisherman's particle size ≤ 40μm, TiH 2 The Fischer particle size of polyethylene glycol and silicon powder is less than or equal to 20 μm. Grading the particle size of raw materials will help reduce the formation of difficult-to-close gaps or agglomeration of raw materials during the mixing process, thereby reducing the quality defects of molybdenum slabs;

[0036] b. Preparation of alloy powder: the raw material Al(NO 3 ) ...

Embodiment 2

[0043] A method for making a molybdenum alloy boat, comprising the following steps:

[0044] (1) Preparation of molybdenum slab:

[0045] a. Ingredients: Molybdenum slabs are prepared from the following raw materials in weight percentage: Al(NO 3 ) 3 : 4.0%, La(NO 3 ) 3 : 0.5%, TiH 2 : 0.5%, polyethylene glycol 3000: 0.7%, silicon powder: 1.5%, the balance is molybdenum powder and unavoidable impurities, and all raw materials are 100%, the Fischer particle size of the molybdenum powder used in the present invention≤4μm, Al(NO 3 ) 3 , La(NO 3 ) 3 Fisherman's particle size ≤ 40μm, TiH 2 The Fischer particle size of polyethylene glycol and silicon powder is less than or equal to 20 μm. Grading the particle size of raw materials will help reduce the formation of difficult-to-close gaps or agglomeration of raw materials during the mixing process, thereby reducing the quality defects of molybdenum slabs;

[0046] b. Preparation of alloy powder: the raw material Al(NO 3 ) ...

Embodiment 3

[0053] A method for making a molybdenum alloy boat, comprising the following steps:

[0054] (1) Preparation of molybdenum slab:

[0055] a. Ingredients: Molybdenum slabs are prepared from the following raw materials in weight percentage: Al(NO 3 ) 3 : 2.0%, La(NO 3 ) 3 : 1.0%, TiH 2 : 1.0%, polyethylene glycol 3000: 0.5%, silicon powder: 1.0%, the balance is molybdenum powder and unavoidable impurities, and all raw materials are 100%, the Fischer particle size of the molybdenum powder used in the present invention≤4μm, Al(NO 3 ) 3 , La(NO 3 ) 3 Fisherman's particle size ≤ 40μm, TiH 2 The Fischer particle size of polyethylene glycol and silicon powder is less than or equal to 20 μm. Grading the particle size of raw materials will help reduce the formation of difficult-to-close gaps or agglomeration during the mixing process of raw materials, thereby reducing the quality defects of molybdenum slabs;

[0056] b. Preparation of alloy powder: the raw material Al(NO 3 ) ...

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Abstract

The invention discloses a method for making a molybdenum alloy boat, which includes the following steps: (1) preparing a molybdenum slab: a. Ingredients: the molybdenum slab is prepared from the following raw materials in weight percentage: Al(NO3)3: 1.0% to 4.0% , La(NO3)3: 0.5-3.0%, TiH2: 0.5-1.2%, polyethylene glycol: 0.4%-0.7%, silicon powder: 0.5-1.5%, and the balance is molybdenum powder and unavoidable impurities; b, Preparation of alloy powder; c. Compacting and sintering: the alloy powder is compacted and sintered to obtain molybdenum slabs; (2) rolling: the molybdenum slabs are processed into blanks, hot rolling, warm rolling, cold rolling and annealing processes Molybdenum alloy; (3) Cutting and bending: Cut out four squares at the four corners of the molybdenum alloy, and bend the four sides respectively; (4) Welding and forming. The molybdenum alloy used in the molybdenum alloy boat has high tensile strength and high elongation, and the manufactured molybdenum alloy boat has high yield and low cost.

Description

technical field [0001] The invention relates to a method for processing metal molybdenum and molybdenum alloys used in molybdenum crucibles, molybdenum alloy boats and the like in the process of reduction and roasting in metallurgical and chemical processes, in particular to a method for manufacturing molybdenum alloy boats. Background technique [0002] Molybdenum and molybdenum alloy crucibles and reduction boats are commonly used reduction and roasting vessels in metallurgical and chemical processes. At present, the wall thickness of molybdenum boats is mostly greater than 2mm. The processing methods of molybdenum boats are mostly made of powder metallurgy and molybdenum plate stamping process. The above-mentioned process molybdenum boats have many defects, the yield is not high, and the service life is short, especially for medium-thickness molybdenum plate stamping. When it is used, it is prone to cracking and wrinkles. Even if the precision of the stamped molybdenum bo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00B22F1/00B22F3/10
CPCB22F1/0003B22F3/10B22F2998/10B22F2999/00B23P15/00B22F2009/043B22F3/02B22F2201/013
Inventor 孙虎民赵文普高建杰崔冬乐
Owner LUOYANG SIFON ELECTRONICS
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