Material for manufacturing boat and process method for manufacturing boat through material

A process method and a boat technology are applied to high-temperature boat materials and the field of preparing boats for high-temperature reduction furnaces, which can solve the problems of unsatisfactory boat materials, production and application limitations, and single materials, so as to reduce material costs, Improved appearance quality and high dimensional accuracy of castings

Active Publication Date: 2016-01-06
CHENGDU XINGYU PRECISION CASTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the fact that the materials that can be selected for the preparation of boats are relatively single, and the temperature that this type of material can withstand is relatively low (about 900 ° C), resulting in defects such as easy peeling and sticking of the boat during the operation of the boat. The output and application of material products are greatly restricted
At the same time, with the rapid development of the cemented carbide industry, the requirements for the maximum working temperature of the boat and the mechanical properties of the high-temperature environment are getting higher and higher. industry needs

Method used

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  • Material for manufacturing boat and process method for manufacturing boat through material

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Embodiment 1

[0025] (1) batching; batching is carried out according to the weight ratio of each composition in the material described in the present invention: metal nickel 90Kg, metal tungsten: 57.5Kg, graphite: 150 grams, metal titanium 300 grams, rare earth silicon 400 grams;

[0026] (2) Manufacture presses and press wax molds; use pressure to press the wax into the presses of aluminum alloy materials, wherein the presses are processed by numerical control, and the waxes are cast waxes at medium temperature, and are taken out after cooling and solidification;

[0027] (2) Shell making: coating and hanging refractory material on the surface of the wax mold to form a refractory shell, in which 830 silica sol is used as the adhesive for the surface layer, zircon sand and zirconium powder are used for the ingredients, and 1430 silica sol is used as the adhesive for the reinforcement layer , the ingredients are made of mullite and mullite powder, and the process of forming a hard shell must ...

Embodiment 2

[0034] (1) batching; batching is carried out according to the weight ratio of each composition in the material described in the present invention: metal nickel 175Kg, metal tungsten: 120Kg, graphite: 300 grams, metal titanium 600 grams, rare earth silicon 800 grams;

[0035] (2) Manufacture presses and press wax molds; use pressure to press the wax into the presses of aluminum alloy materials, wherein the presses are processed by numerical control, and the waxes are cast waxes at medium temperature, and are taken out after cooling and solidification;

[0036] (2) Shell making: coating and hanging refractory material on the surface of the wax mold to form a refractory shell, wherein the surface layer uses 830 silica sol as the adhesive, the ingredients use zircon sand and zirconium powder, and the reinforcement layer adopts 1430 silica sol as the adhesive, The ingredients are mullite and mullite powder, and the process of forming a hard shell must be repeated many times to form ...

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Abstract

The invention discloses a material for manufacturing a boat and a process method for manufacturing the boat through the material. The material comprises, by weight, 58%-62% of Ni, 0-0.2% of Ti, 0-0.15% of Si, 0-0.1% of C, 0-0.05% of Re, and the balance W and other impurities. The boat manufactured from the material through the process method has higher high-temperature strength performance under the conditions of a reducing atmosphere with the high temperature of 1250 DEG C, and can be used for six moths without deformation or cracking. Besides, in the using process, the phenomenon that materials adhere to the boat hardly occurs, the impurity content of reduced tungsten powder and the impurity content of reduced molybdenum powder can be reduced significantly, and the production efficiency and quality of the tungsten powder and the molybdenum powder are improved effectively.

Description

technical field [0001] The invention relates to a material for preparing a high-temperature boat for producing tungsten-molybdenum powder in a high-temperature reduction furnace, and a process method for preparing a boat for a high-temperature reduction furnace by using the material, belonging to the fields of new materials and metallurgical industry. Background technique [0002] Boats are widely used in the production of tungsten and molybdenum powders in high-temperature reduction furnaces, but the selection of boat materials has always troubled the cemented carbide industry. [0003] At present, tungsten-molybdenum powder reduction alloy boats at home and abroad are generally made of pure nickel, nickel-chromium superalloy casting or stainless steel welding. It has the advantages of good high-temperature strength, small deformation, and low production cost. Compared with other boat materials and boat processing The process has obvious advantages and is favored by the cem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/03B22C9/04
Inventor 李程
Owner CHENGDU XINGYU PRECISION CASTING
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