Bonding wire smelting crucible

Abstract

The utility model discloses a bonding wire smelting crucible which comprises a quartz tube, a base is arranged at the bottom end of the quartz tube, an end cover is arranged at the upper end of the quartz tube, a crucible body is arranged in the quartz tube, an inner cover made of quartz materials is arranged between the crucible body and the quartz tube, and the inner cover is arranged in the quartz tube. And the inner cover covers the outer side of the crucible and is higher than the crucible. According to the utility model, the inner cover is arranged in the quartz tube, so that heat radiation of molten soup during smelting is effectively isolated, the service life of the quartz tube can be obviously prolonged (more than 10 times), the service life of the quartz tube is prolonged, and the cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of bonding wire smelting, in particular to a bonding wire smelting crucible. Background Art

[0002] The production of bonding wires requires high-temperature melting of ultra-pure metal raw materials, and then drawing, annealing and other processes to make the bonding wires required by customers. The melting process requires the use of a vacuum melting furnace, and the melting temperature can reach 1200°C. In order to ensure that the molten metal is not contaminated, graphite crucibles, quartz tubes and other components are used to build a vacuum melting environment. Existing high vacuum melting furnaces such as Figure 1 As shown, a quartz tube 10 and a crucible 20 constitute a vacuum melting environment. The existing design has a significant impact on the manufacturing cost because the quartz tube is expensive and has a short life. During melting, the high-temperature heat radiation of the molten soup directly acts on the quartz tube. As the number of uses increases, the inner wall of the quartz tube will oxidize and peel, which affects the cleanliness of the melting environment and the risk of vacuum damage. Utility Model Content

[0003] The utility model aims to provide a bonding wire melting crucible to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bonding wire melting crucible, comprising a quartz tube, a base is provided at the bottom end of the quartz tube, an end cover is provided at the upper end of the quartz tube, a crucible is provided in the quartz tube, an inner cover made of quartz material is provided between the crucible and the quartz tube, and the inner cover is provided on the outside of the crucible and has a height greater than the height of the crucible.

[0005] Preferably, the crucible is a graphite crucible.

[0006] Compared with the prior art, the utility model has the following beneficial effects: the utility model provides an inner cover in the quartz tube to effectively isolate the heat radiation of the molten metal during smelting, which can significantly increase the life of the quartz tube (more than 10 times), increase the service life of the quartz tube, and save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic diagram of the prior art structure;

[0008] Figure 2 It is a schematic diagram of the structure of the utility model.

[0009] In the figure: 1. quartz tube; 2. inner cover; 3. crucible; 4. base; 5. end cover. DETAILED DESCRIPTION

[0010] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0011] See also Figure 1 The utility model provides a technical solution: a bonding wire melting crucible, comprising a quartz tube 1, a base 4 is provided at the bottom end of the quartz tube 1, an end cover 5 is provided at the upper end of the quartz tube 1, the base 4 and the end cover 5 can maintain a sealed state with the quartz tube 1, a crucible 3 is provided in the quartz tube 1, an inner cover 2 made of quartz material is provided between the crucible 3 and the quartz tube 1, the inner cover 2 is provided on the outside of the crucible 3 and the height is greater than the height of the crucible 3, a vacuum environment is formed inside the quartz tube 1, so that the service life of the quartz tube is extended, a quartz inner cover 2 is added between the crucible 3 and the quartz tube 1, the heat radiation of the molten soup during smelting is effectively isolated, the service life of the quartz tube can be significantly improved (more than 10 times), and the manufacturing cost is saved.

[0012] Specifically, the crucible 3 is a graphite crucible.

[0013] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bonding wire melting crucible, characterized in that: The invention comprises a quartz tube (1), wherein the bottom end of the quartz tube (1) is provided with a base (4), the upper end of the quartz tube (1) is provided with an end cover (5), a crucible (3) is provided inside the quartz tube (1), an inner cover (2) made of quartz material is provided between the crucible (3) and the quartz tube (1), and the inner cover (2) is provided outside the crucible (3) and has a height greater than that of the crucible (3).

2. A bonding wire melting crucible according to claim 1, characterized in that: The crucible (3) is a graphite crucible.

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