Lining type container used for precious metal crucible and preparation method thereof

A precious metal and crucible technology, which is applied to the field of lined container and its preparation, can solve the problems that the crucible lining cannot be produced in batches, increase the amount of crucible erosion, and the operation time is long, and achieves simple production, high equipment use efficiency, The effect of short production cycle

Active Publication Date: 2016-02-03
象山惠丰机械模具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This technology allows for efficient manufacturing of rare earth elements by directly making them into containers without requiring expensive steps like heat treatment or other methods such as fusion welds. It also simplifies the method of producing these materials while reducing their impact on environmentally friendly processes. Overall, this new technique results in lower energy usage, lesser environmental concerns associated with its fabrications, higher productivity rates, longer lifetimes of tools made from refractory material, reduced maintenance requirements, increased safety measures, etc., resulting in more affordable products than previously possible.

Problems solved by technology

This patented technical problem addressed by this patents relates to methods for making ceramics containing tantalum or molydenum metals. These techniques involve melting metal into liquid form during manufacturing processes such as casting, crystallizing, machining, etc., which requires expensive equipment like crucibles made up of graphite. Previous attempts have been attempted but resulted in poor results due to excessive wear caused by the liners themselves.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A lined container for a precious metal crucible and a preparation method thereof. Described preparation method is:

[0020] Step 1, according to the molar ratio of boric acid powder: lithium carbonate powder is 4: 1, boric acid powder and lithium carbonate powder are mixed uniformly, obtain mixed powder; Then to described mixed powder spray pure water, the pure water of spraying is described mixed powder. 0.1~0.8wt% of the powder, stirred and mixed to obtain a mixture; the mixture was left to stand at 10~20°C until the mixture was 84~88wt% of the mixture before standing, and a lithium tetraborate semi-dry material was obtained .

[0021] Step 2: molding the lithium tetraborate semi-dry material to obtain a lined container blank of the crucible.

[0022] Step 3: Put the lined container blank of the crucible in an oven, dry at 105°C for 2-3 hours, and sinter at 700-780°C for 2-3 hours; cool to obtain the inner lining for the precious metal crucible container.

Embodiment 2

[0024] A lined container for a precious metal crucible and a preparation method thereof. Described preparation method is:

[0025] Step 1, according to the molar ratio of boric acid powder: lithium carbonate powder is 4: 1, boric acid powder and lithium carbonate powder are mixed uniformly, obtain mixed powder; Then to described mixed powder spray pure water, the pure water of spraying is described mixed powder. 0.5~1.5wt% of the powder, stirred and mixed to obtain a mixture; the mixture was left to stand at 15~25°C until the mixture was 83~87wt% of the mixture before standing, and a lithium tetraborate semi-dry material was obtained .

[0026] Step 2: molding the lithium tetraborate semi-dry material to obtain a lined container blank of the crucible.

[0027] Step 3: Place the lined container blank of the crucible in an oven, dry at 105°C for 2-3 hours, and sinter at 750-820°C for 1.5-2.5 hours; cool to obtain the inner lining for the precious metal crucible container.

Embodiment 3

[0029] A lined container for a precious metal crucible and a preparation method thereof. Described preparation method is:

[0030] Step 1, according to the molar ratio of boric acid powder: lithium carbonate powder is 4: 1, boric acid powder and lithium carbonate powder are mixed uniformly, obtain mixed powder; Then to described mixed powder spray pure water, the pure water of spraying is described mixed powder. 1.2-2wt% of the powder, stirred and mixed to obtain a mixture; the mixture was left to stand at 20-40°C until the mixture was 82-86wt% of the mixture before standing, and a lithium tetraborate semi-dry material was obtained.

[0031] Step 2: molding the lithium tetraborate semi-dry material to obtain a lined container blank of the crucible.

[0032] Step 3: Place the lined container blank of the crucible in an oven, dry at 105°C for 2-3 hours, and sinter at 800-850°C for 1-2 hours; cool to obtain the inner lining for the precious metal crucible container.

[0033]...

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PUM

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Abstract

The invention relates to a lining type container used for a precious metal crucible and a preparation method thereof. According to the technical scheme, boronic acid powder and lithium carbonate powder are evenly mixed according to the mole ratio of 4:1 to obtain mixed powder; then, pure water is sprayed to the mixed powder, the sprayed pure water accounts for 0.1-2 wt% of the mixed powder, stirring is carried out till mixing is uniform, and a mixed material is obtained; the obtained material stands still under the condition of 10-40 DEG C till the mixed material accounts for 82-88 wt% of the mixed material before still standing, and a lithium tetraborate half-dry material is obtained; then the lithium tetraborate half-dry material is formed to obtain a crucible lining container blank; finally, the crucible lining container blank is placed in an oven, dried for 2-3 hours under the condition of 105 DEG C and sintered for 1-3 hours under the condition of 700-850 DEG C; cooling is carried out, and the lining type container used for the precious metal crucible is obtained. The container has the advantages that energy consumption is low, manufacturing is easy, the production period is short, equipment utilization efficiency is high, cost is saved, and the precious metal crucible is long in service life.

Description

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Claims

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Application Information

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Owner 象山惠丰机械模具有限公司
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