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Wide breadth ultra-thin pure gold foil belt and manufacturing method of wide breadth ultra-thin pure gold foil belt

A manufacturing method, ultra-thin technology, applied in the direction of metal rolling, etc., can solve the problems of high foil consumables, increased production costs, low yield, etc., to achieve a simplified rolling process, high raw material utilization rate, and high processing accuracy Effect

Inactive Publication Date: 2015-10-21
SHENZHEN ZHONGJIN NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the many passes in each stage of the rolling process and the high number of rolling times, the process is complicated; in addition, multiple annealings are required, which leads to limited gold foil width, thick foil strip thickness, and low yield. High consumables increase production costs, thus limiting the industrial production and application of gold foil strips

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] In this example, the manufacturing method includes the following steps in sequence:

[0033] (1) Melting: put the pure gold material into the crucible melting furnace for melting, the melting temperature is 1100°C, and keep warm for 1 hour;

[0034] (2) Ingot casting: molding the above pure gold liquid ingot to obtain an ingot. According to the wide width requirement of the designed product, the shape of the cast ingot is a square gold ingot. In principle, the size of the gold ingot should be smaller than the designed wide gold foil strip with a width of 20mm and a thickness of 10mm;

[0035] (3) Upsetting: After heating the cast square gold ingot, put it into a closed mold for upsetting. The forging temperature is controlled at 300°C, and the forging is repeated until the closed mold is filled;

[0036] (4) Face milling: The upsetting forgings are milled to remove burrs, and the surface milling is smooth. Milling surface thickness tolerance within 0.2mm, and clean ...

Embodiment 2

[0046] In this example, the manufacturing method includes the following steps in sequence:

[0047] (1) Melting: put the pure gold material into the crucible melting furnace for melting, the melting temperature is 1150°C, and keep warm for 0.5 hours;

[0048] (2) Ingot casting: molding the above pure gold liquid ingot to obtain an ingot. According to the wide width requirement of the designed product, the shape of the cast ingot is a square gold ingot. In principle, the size of the gold ingot should be smaller than the designed wide gold foil strip with a width of 30mm and a thickness of 30mm;

[0049](3) Upsetting: After heating the cast square gold ingot, put it into a closed mold for upsetting. The forging temperature is controlled at 650°C, and the forging is repeated until the closed mold is filled;

[0050] (4) Face milling: The upsetting forgings are milled to remove burrs, and the surface milling is smooth. Milling surface thickness tolerance within 0.2mm, and clea...

Embodiment 3

[0060] In this example, the manufacturing method includes the following steps in sequence:

[0061] (1) Melting: put the pure gold material into the crucible melting furnace for melting, the melting temperature is 1125°C, and keep warm for 0.75 hours;

[0062] (2) Ingot casting: molding the above pure gold liquid ingot to obtain an ingot. According to the wide width requirement of the designed product, the ingot size is a square gold ingot. In principle, the size of the gold ingot should be smaller than the designed wide gold foil strip with a width of 25mm and a thickness of 20mm;

[0063] (3) Upsetting: After heating the cast square gold ingot, put it into a closed mold for upsetting. The forging temperature is controlled at 500°C, and the forging is repeated until the closed mold is filled;

[0064] (4) Face milling: The upsetting forgings are milled to remove burrs, and the surface milling is smooth. Milling surface thickness tolerance within 0.2mm, and clean it;

[0...

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Abstract

The invention discloses a wide breadth ultra-thin pure gold foil belt and a manufacturing method of the wide breadth ultra-thin pure gold foil belt. The manufacturing method comprises the following steps of (1) melting, (2) cast ingot forming, (3) upsetting, (4) surface milling, (5) cold rolling blank opening, (6) middle rolling, (7) annealing, (6) fine rolling, (7) foil rolling and (8) post treatment. The manufacturing method provided by the invention adopts the work procedures including ingot casting, upsetting, surface milling, rolling, annealing and the like; a lead belt is used in the rolling process; the one-step feeding quantity for processing of pure gold foils can be effectively reduced; in addition, the use rate of raw materials is high, so that the lowest quantity of tons of gold raw materials required for blank belt production by a horizontal continuous casting method and an upper traction method can be avoided. The whole rolling process only needs coarse rolling, middle rolling, fine rolling and foil rolling, and the rolling work procedures are simple; before the foil rolling, only once annealing is needed; the complexity of multiple times of annealing in the prior art is avoided. The wide breath ultra-thin pure gold foil belt and the manufacturing method have the advantages that the work procedures are simple; the fed raw materials for single-time production are few; the pure gold foils obtained in such a way have wide breadth and are ultra-thin. In addition, the processing precision of the whole manufacturing method is also higher.

Description

technical field [0001] The invention relates to the technical field of metal foil processing, in particular to a wide ultra-thin pure gold foil strip and a manufacturing method thereof. Background technique [0002] Pure gold is a beautiful golden-yellow metal that is malleable, the best of all metals. Gold is often used to make highly sensitive physical instrument components, various automation devices, rockets, submarines, computers, nuclear devices and communication systems. A large number of electrical contacts in these devices are widely made of gold. Since the price of gold is relatively expensive, in order to actually reduce the cost of using gold, gold is generally processed into gold foil. Gold foil was processed by hand earlier, and the manual process can only produce small-sized pure gold foil, which is very expensive and cannot be made into strips, which restricts the scope of use of gold foil. [0003] At present, there is a technology to process and make gold...

Claims

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Application Information

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IPC IPC(8): B21C37/02B21J5/02B21B1/40C22B11/00C22F1/14
CPCB21B1/00B21B1/40B21C37/02B21J5/02C22B11/00C22F1/14
Inventor 陈长发姜全兵李庆雄
Owner SHENZHEN ZHONGJIN NEW MATERIAL CO LTD