CN212704029U

CN212704029U - Platinum crucible and special mould for repairing platinum cover

Info

Publication number: CN212704029U
Application number: CN202021485704.XU
Authority: CN
Inventors: 姜军; 陈志鹏; 朱智超; 纪执鑫
Original assignee: Anshan Jinhe Mining Co ltd
Current assignee: Anshan Jinhe Mining Co ltd
Priority date: 2020-07-24
Filing date: 2020-07-24
Publication date: 2021-03-16
Anticipated expiration: 2030-07-24

Abstract

The utility model relates to a platinum crucible and a special mould for repairing a platinum cover, which is characterized by consisting of a lower mould, a middle mould and an upper pressure head mould, wherein the lower mould is a hollow groove-shaped mould, the middle mould consists of a crucible-shaped male mould, the upper part of the crucible-shaped male mould is provided with a protruding edge and is integrally connected with the protruding edge, and the upper surface of the protruding edge is provided with a groove II matched with a convex-concave structure at the lower part of the platinum cover; the upper pressure head die is a cylindrical upper pressure head die with the same outer diameter as the lower die, and the lower part of the cylindrical upper pressure head die is provided with a groove I with a convex-concave structure matched with the convex-concave structure on the upper part of the platinum cover. The utility model has the advantages that: the method can effectively improve the maintenance efficiency, greatly reduce the frequency of re-purifying and processing the platinum metal, thereby avoiding unnecessary loss of the platinum metal, simplifying and efficiently repairing the platinum crucible and the platinum cover, and reducing the production cost of enterprises.

Description

Platinum crucible and special mould for repairing platinum cover

Technical Field

The utility model relates to a platinum crucible technical field, in particular to platinum crucible and platinum lid restore special mould.

Background

The platinum crucible and the platinum cover are made of high-purity platinum metal with the purity of more than or equal to 99.95 percent through high-frequency smelting, forging, rolling and fine processing. The melting point of platinum is 1770 ℃, the use temperature of the platinum vessel can be above 1300 ℃, the chemical property is stable, the platinum vessel does not generate chemical change after being burnt in the air and does not absorb moisture, most chemical reagents have no erosion effect on the platinum vessel, and the platinum vessel can resist the corrosion of hydrofluoric acid and molten alkali carbonate, and the platinum vessel have important characteristics different from those of a glass crucible, a glass cover, a ceramic crucible and a ceramic cover, so the platinum vessel and the platinum vessel are widely applied to the mineral separation analysis and assay work of ferrous metals and nonferrous metals such as iron ore (silicon content), magnesite (impurity content) and the like.

The platinum metal is expensive and soft, so that the force cannot be applied when the platinum crucible and the platinum cover are taken, and the sharp objects cannot be used for picking up materials in the crucible, so that the pot body and the cover body are prevented from being scratched or deformed. In addition, deformation of the pot body and the cover body caused by firing cannot be avoided, and once the platinum crucible and the platinum cover are greatly deformed, the accuracy and timeliness of mineral separation chemical analysis are seriously influenced. For example, in the examination of iron ore (silicon content) and magnesite (impurity content), a platinum crucible with a cover for containing a boric acid mixed solvent needs to be heated and melted in a muffle furnace to stew acid, after the crucible is burnt for a long time, the cover body deforms in a concave-convex manner, particularly, the lower half part of the crucible body is sunken into a crater shape, and the bottom of the crucible is piled into a wrinkled shape, so that the crucible is not placed stably, great inconvenience is brought to the operation of a person, more importantly, a sample is mixed in the deformed part, the sample is not dissolved uniformly, and in addition, the wrinkled cover body is not tight, the sample is cracked, the deviation of the test data is finally caused, and the accuracy of the examination result of the mineralization is seriously. Therefore, the platinum crucible and the platinum cover are essential key devices for analysis and assay, and the maintenance of the appearance of the platinum crucible and the platinum cover is very important.

At present, the plastic repair of platinum crucibles and platinum covers in various mine laboratories in China is mainly manual external force correction or factory returning remelting forming. The method has the advantages that the method has no cost due to manual operation, has the defects that the secondary damage of the platinum crucible and the platinum cover is easily caused due to improper operation, only the crucible and the cover with small deformation degree can be repaired manually, and the platinum crucible and the platinum cover which are high in use frequency and seriously deformed cannot be repaired. Returning to the factory for remelting and forming, namely sending the platinum crucible and the platinum cover to a special noble metal production enterprise for re-purification and processing, the method has the advantages that the completely new crucible and cover are obtained after remelting, and the method has the defects of high cost, long repair period, influence on the utilization rate of the crucible and the cover, and inevitably has 3 per mill of platinum metal loss after remelting every time.

The processing of the platinum crucible and the platinum cover mainly comprises die punch forming and spinning forming, the precision of products is high, the inner and outer smooth finish of the crucible and the cover is required to be high, the wall thickness is uniform, the crucible and the cover belong to high-end crystals with sheet materials formed in one step and the whole crucible and the whole cover without welding spots of welding seams, and therefore, the processing cost of remelting and forming in a factory is high under the condition of high use frequency. When the silicon content is tested in the iron dressing plant, 15 sets of platinum crucibles and platinum covers are prepared according to the laboratory of the medium-scale dressing plant in the Anshan area, the weight is 35 g/set, the platinum crucibles and the platinum covers are returned to the plant for remelting and forming for 1 time every 1.5 months, the processing cost is 15 yuan/g, the platinum metal loss rate is 3 per thousand, the platinum price is 280 yuan/g, namely the shaping and repairing cost of the platinum crucibles and the platinum covers all year round is 6.65 ten thousand yuan, which is equivalent to the cost of newly purchasing 7 sets of platinum crucibles and platinum covers, and the maintenance cost is very high.

Disclosure of Invention

The utility model aims at providing a simple structure, convenient operation has reduced unnecessary extravagant, restores with low costs platinum crucible and platinum special use and restores the mould.

The utility model relates to a special repairing mould for a platinum crucible and a platinum cover, which is characterized in that the special repairing mould consists of a lower mould, a middle mould and an upper pressure head mould,

the lower die is a cylindrical die with a hollow groove, wherein the size of the hollow groove is matched with that of the outer wall of the platinum crucible;

the middle die consists of a crucible-shaped male die with a convex edge at the upper part and integrally connected with the convex edge, the outer wall of the crucible-shaped male die is matched with the inner wall of the platinum crucible in size, and the upper surface of the convex edge is provided with a groove II matched with a convex-concave structure at the lower part of the platinum cover;

the upper pressure head die is a cylindrical upper pressure head die with the same outer diameter as the lower die, and the lower part of the cylindrical upper pressure head die is provided with a groove I with a convex-concave structure matched with the convex-concave structure on the upper part of the platinum cover.

Furthermore, the lower die, the middle die and the upper pressure head die are made of nylon engineering plastics with high strength toughness, wear resistance, aging resistance, machining performance and dimensional stability.

The utility model has the advantages that: by adopting the special repairing mold, the problems that the platinum crucible and the platinum cover are easily damaged secondarily due to manual repair, the wrinkled bottom and the wrinkled cover cannot be repaired, the factory return maintenance cost is high, the utilization rate of the crucible and the cover is low due to long period, the deformation of the cover body of the pot body influences the inspection accuracy and the like are solved, the maintenance efficiency can be effectively improved, the frequency of re-purifying and processing the platinum metal is greatly reduced, the unnecessary loss of the platinum metal is avoided, the repairing process of the platinum crucible and the platinum cover becomes simple and efficient, and the production cost of enterprises is reduced.

Drawings

FIG. 1 is a schematic view of the structure of a platinum crucible and a platinum lid.

Fig. 2 is a top view of a platinum cap.

Fig. 3 is an expanded view of the platinum crucible and the dedicated repairing mold for the platinum cover of the present invention.

Fig. 4 is an enlarged view of a portion a of fig. 3.

FIG. 5 is a schematic diagram of the repair of a platinum crucible and a platinum cover.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in figures 1-5, the utility model relates to a platinum crucible and a special repair mould for a platinum cover, which is characterized in that the repair mould comprises a lower mould 4, a middle mould and an upper pressure head mould 5,

the lower die 4 is a hollow groove-shaped die, and the size of the groove is matched with the size of the outer wall of the platinum crucible 1;

the upper pressure head die 5 is a cylindrical upper pressure head die with the same outer diameter as the lower die, the lower part of the cylindrical upper pressure head die is provided with a groove I51 with a convex-concave structure matched with the convex-concave structure on the upper part of the platinum cover,

the middle die consists of a crucible-shaped male die 32 with a protruding edge 31 at the upper part and integrally connected with the protruding edge 31, the outer wall of the crucible-shaped male die 32 is matched with the inner wall of the platinum crucible 1 in size, and a groove II 33 matched with the convex-concave structure at the lower part of the platinum cover 2 is arranged on the upper surface of the protruding edge 31;

when the device is used, the damaged platinum crucible 1 is placed in the hollow groove of the lower die 4, the middle die is inserted into the inner wall of the platinum crucible 1, the platinum cover 2 is placed in the groove II 33 at the upper part of the protruding edge 31, finally the upper pressure head die 5 is covered, the whole protruding edge 31 is embedded into the groove I51 with the convex-concave structure at the lower part of the upper pressure head die, and the platinum cover 2 is pressed between the upper pressure head die 5 and the middle die; and then, slowly and uniformly pressing down with force, repeatedly screwing, correcting, gradually aligning and attaching the lower die, the middle die and the upper pressure head die until the dies are completely attached to the crucible and the cover and no obvious crack exists, and taking out the platinum crucible and the platinum cover which are shaped in a circle.

Lower mould 4, middle mould and last pressure head mould 5 adopt engineering plastics preparation to form. The mould is made of a nylon rod, so that the mould has the advantages of high strength and toughness, wear resistance and aging resistance, machining performance and dimensional stability, and secondary damage to the platinum cover 2 of the platinum crucible 1 is effectively prevented by the mould made of the nylon rod. All die processing requirements must achieve complete attachment to a brand new platinum crucible and a platinum cover.

Claims

1. The special repairing mold for the platinum crucible and the platinum cover is characterized by comprising a lower mold, a middle mold and an upper pressure head mold, wherein the lower mold is a cylindrical mold with a hollow groove, and the size of the hollow groove is matched with that of the outer wall of the platinum crucible; the middle die consists of a crucible-shaped male die with a convex edge at the upper part and integrally connected with the convex edge, the outer wall of the crucible-shaped male die is matched with the inner wall of the platinum crucible in size, and the upper surface of the convex edge is provided with a groove II matched with a convex-concave structure at the lower part of the platinum cover; the upper pressure head die is a cylindrical upper pressure head die with the same outer diameter as the lower die, and the lower part of the cylindrical upper pressure head die is provided with a groove I with a convex-concave structure matched with the convex-concave structure on the upper part of the platinum cover.