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A kind of crucible basket sleeve and preparation method thereof

A technology of crucible and basket cover, which is applied in the field of crucible basket cover and its preparation for vacuum smelting of high-temperature alloys, and can solve the problems of crucible basket cover fusing, failure, and affecting normal smelting production, etc.

Active Publication Date: 2017-11-24
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual production process, it was found that under the action of the external intermediate frequency induction current, the welded crucible basket sleeve is very easy to generate an induced current at the welding point or the junction of the connection, resulting in partial fusing of the crucible basket sleeve and failure, seriously Affect normal smelting production

Method used

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  • A kind of crucible basket sleeve and preparation method thereof
  • A kind of crucible basket sleeve and preparation method thereof
  • A kind of crucible basket sleeve and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Manufacturing method of crucible basket cover for 25KG vacuum induction melting furnace

[0031] 1. Calculate the size of the material used for the crucible basket sleeve

[0032] It is known that the inner diameter of the crucible is D 0 =140mm, height is W 0 =260mm; coil inner diameter D 2 =240mm, height W 2 =300mm; the gap between the crucible and the crucible basket is a=30mm; then the inner diameter of the crucible basket is D 1 =200mm, height W 1 =280mm. Then the length of the steel plate L=670mm, the height of the steel plate H=540mm, such as Figure 4 shown.

[0033] 2. Processing of the upper and lower edges of the crucible basket sleeve

[0034] Carry out 15 equal divisions along the length of the steel plate. Then the width of the fixed upper edge 21 and the fixed lower edge 22 of the crucible basket cover is 40 mm, and the length is 80 mm. Then cut out 7 rectangles at the upper and lower ends of the steel plate at intervals, leaving 8 fixed upper e...

Embodiment 2

[0040] 10KG directional solidification furnace (HRS or LMC) crucible basket making method

[0041] 1. Calculate the size of the material used for the crucible basket sleeve

[0042] It is known that the inner diameter of the crucible is D 0 = 100mm, height is W 0 =220mm; coil inner diameter D 2 =180mm, height W 2 =250mm; the gap between the crucible and the crucible basket is a=25mm;

[0043] Then the inner diameter of the crucible basket D 1 =160mm, height W 1 =240mm; the length L of the steel plate=520mm, the height H of the steel plate=400mm.

[0044] 2. Processing of the upper and lower edges of the crucible basket sleeve

[0045] Carry out 12 equal divisions along the length direction of the steel plate. Then the width of the fixed upper edge and the fixed lower edge of the crucible basket sleeve is 40mm, and the length is 75mm. Then cut out 6 rectangles at intervals at the upper and lower ends of the steel plate, leaving 6 fixed upper edges and 6 fixed lower edg...

Embodiment 3

[0051] Manufacturing Method of Crucible Basket Cover for 50KG Integral Cast Fine Grain Furnace

[0052] 1. Calculate the size of the material used for the crucible basket sleeve

[0053] It is known that the inner diameter of the crucible is D 0 =240mm, height is W 0 =400mm; coil inner diameter D 2 =340mm, height W 2 =500mm; the gap between the crucible and the crucible basket is a=40mm;

[0054] Then the inner diameter of the crucible basket D 1 =320mm, height W 1 =420mm; length L of the steel plate=1000mm, height H of the steel plate=720mm.

[0055] 2. Processing of the upper and lower edges of the crucible basket sleeve

[0056] Carry out 16 equal divisions along the length direction of the steel plate. Then the width of the fixed upper edge and fixed lower edge of the crucible basket sleeve is 60mm, and the length is 150mm. Then cut out 8 rectangles at intervals at the upper and lower ends of the steel plate, leaving 8 fixed upper edges and 8 fixed lower edges.

...

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Abstract

The invention aims to provide a method for integrally producing a crucible basket cover. The method is characterized by comprising the following steps that firstly, the size of a material used by the crucible basket cover is calculated according to the sizes of a crucible and an inductive coil; then, a fixed upper edge and a fixed lower edge of the crucible basket cover are processed through electrospark wire-electrode cutting, and holes are processed in the wall of the crucible basket cover by a numerical control punching machine; the fixed upper edge of the crucible basket cover is outwards folded, the fixed lower edge of the crucible basket cover is inwards folded, and the wall of the crucible basket cover is bent to form the shape of a pen container; and finally, the upper and lower edges of the crucible basket cover and an insulation asbestos board are fixedly connected through a nut to obtain an integrally molded crucible basket cover without welding. The method not only can prevent the generation of welding points, but also can prominently improve the strength of the crucible basket cover, so that the service life of the crucible basket cover is prolonged, and the production efficiency is improved.

Description

technical field [0001] The invention relates to an integrated design of a crucible basket cover and a manufacturing method thereof, and in particular provides a crucible basket cover for vacuum smelting of high-temperature alloys and a preparation method thereof. Background technique [0002] In the vacuum smelting process of superalloys, the crucible is one of the key factors affecting the purity of alloy steel and the metallurgical quality of castings. In order to improve the uniformity and purity of molten steel, it needs to undergo a melt superheating treatment up to 1600°C-1800°C. Under the action of repeated high temperatures, the crucible is prone to peeling, cracks and other phenomena that lead to failure. In order to ensure the metallurgical quality of castings, a new crucible needs to be replaced after 3-5 times of normal smelting. However, the traditional process of changing the crucible is complicated and time-consuming, which seriously reduces the production e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F27B14/12C22C33/04C22B9/04
CPCY02P10/25
Inventor 李相伟董加胜白清举姜卫国楼琅洪
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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