CN113084129B

CN113084129B - Preparation device and preparation method of metal film

Info

Publication number: CN113084129B
Application number: CN202110384227.0A
Authority: CN
Inventors: 张博玮; 张学斌; 邹中秋; 仝西川; 苏海林; 都有为
Original assignee: Jiangsu Red Magnetic Materials Co ltd
Current assignee: Jiangsu Red Magnetic Materials Co ltd
Priority date: 2021-04-09
Filing date: 2021-04-09
Publication date: 2022-04-01
Anticipated expiration: 2041-04-09
Also published as: CN113084129A

Abstract

The invention relates to a preparation device and a preparation method of a metal film, and belongs to the technical field of metallurgy. The device comprises a pot, a rotary roller, a scraper and a driving mechanism, wherein the rotary roller is rotatably arranged above the interior of the smelting pot through a transmission shaft; the scraping plate is fixedly arranged on the upper part of one side pot wall of the smelting pot, and the scraping plate is in tangential contact with the outer circumference of the rotating roller; the driving mechanism is a motor and a speed reducer; the smelting pot is a crucible, the material of the rotating roller and the material of the scraper are both tungsten steel, and the melting point is 2800 ℃. When in work, the metal blocks are smelted into molten alloy in a smelting pot at the temperature of 1600-1800 ℃, and the molten alloy is contacted with a roller; the transmission shaft drives the rotating roller to rotate at the rotating speed of 2-8r/min under the driving of the driving motor and the speed reducer, the alloy melt is solidified into an alloy film on the surface of the rotating roller, and when the rotating roller rotates to the scraper, the scraper scrapes off the alloy film; the thickness of the alloy film is 0.1-2 mm.

Description

Preparation device and preparation method of metal film

Technical Field

The invention belongs to the technical field of metallurgy, and particularly relates to a preparation method of a metal film.

Background

The traditional preparation method of metal or alloy mostly adopts a smelting ingot casting method, metal or alloy is firstly smelted, cast into a specific mould and cooled to form an alloy ingot. The alloy prepared by the smelting ingot casting method is easy to cause component segregation during casting along with the increase of alloy components or the shape of a die, so that the performance of the alloy is deteriorated, and the prepared metal or alloy ingot is mostly in three-dimensional shapes such as a block shape, a rod shape and the like, so that the subsequent cold working process is difficult to perform on the alloy with high hardness value and good wear resistance.

Common metal film preparation methods include a chemical vapor deposition method, an electroplating method, a vacuum thermal evaporation method, a direct current sputtering method and the like, and the method has expensive required equipment, complex manufacturing process flow, long time and no mass production; the preparation method of the metal strip is a strip casting method, the method can only prepare the alloy strip with lower melting point, vacuum or protective gas is needed in the preparation process, and the prepared strip is easy to have ingredient segregation or uneven strip thickness.

Disclosure of Invention

The invention provides a preparation method of a metal film, aiming at solving the problem of component segregation of an alloy and the problem of crushing of a metal or an alloy with high hardness.

The device for preparing the metal film comprises a smelting pot 2, a rotating roller 3, a scraping plate 4 and a driving mechanism, wherein the rotating roller 3 is rotatably arranged above the smelting pot 2 through a transmission shaft 1; the scraping plate 4 is fixedly arranged on the upper part of the pot wall on one side of the smelting pot 2, and the scraping plate 4 is in tangential contact with the outer circumference of the rotating roller 3;

the driving mechanism is a motor and a speed reducer;

the smelting pot 2 is a crucible, the material of the rotating roller 3 and the material of the scraper 4 are both tungsten steel, and the melting point is 2800 ℃;

when in work, the metal blocks are smelted into molten alloy in a smelting pot at the temperature of 1600-1800 ℃, and the molten alloy is contacted with a roller; the transmission shaft drives the rotating roller to rotate at the rotating speed of 2-8r/min under the driving of the driving motor and the speed reducer, the alloy melt is solidified into an alloy film on the surface of the rotating roller, and when the rotating roller rotates to the scraper, the scraper scrapes off the alloy film; the thickness of the alloy film is 0.1-2 mm.

The specific technical scheme is as follows:

the transmission shaft is tubular, and a cooling liquid channel is arranged in the tubular.

The transmission shaft is arranged on the smelting pot through a pair of lifting mechanisms, the lifting mechanisms are hydraulic oil cylinders, cylinder bodies of the hydraulic oil cylinders are fixedly arranged on the pot wall of the smelting pot, and rod ends of piston rods of the hydraulic oil cylinders are fixedly connected with the transmission shaft; the piston rod of the hydraulic oil cylinder is made of tungsten steel.

The preparation operation steps of the metal film based on the metal film preparation device are as follows:

(1) smelting the metal blocks into molten alloy in a smelting pot 2 at the temperature of 1600-1800 ℃, and regulating a rotating roller 3 to be just contacted with the molten alloy through a pair of lifting mechanisms 5;

(2) starting a driving motor and a speed reducer to drive the rotating roller 3 to rotate at a rotating speed of 2-8r/min, introducing cooling liquid into the transmission shaft 1, and rapidly cooling the alloy melt when the alloy melt contacts the rotating roller 3 and solidifying the alloy melt on the surface of the rotating roller 3 to form an alloy film with the thickness of 0.1-2 mm;

(3) when the roller 3 rotates to the scraper 4, the scraper 4 scrapes off the alloy film 7 and collects the alloy film by a winder.

The beneficial technical effects of the invention are embodied in the following aspects:

1. the invention can prepare the metal or alloy film with high melting point, and the film thickness is thinner. As can be seen from Table 1, the thickness of the Fe-Ni alloy film was 0.1mm, and the thickness of the Fe-Si-Al alloy film was 1 mm.

TABLE 1

Film composition	Thickness of film
		Iron-nickel alloy	0.1mm
Fe-Si-Al alloy	1mm

TABLE 2

Sample (I)	Saturation magnetization	Coercive force
			1	1.01T	97A/m
2	1.62T	23A/m

2. The alloy film prepared by the invention can be prepared into flaky powder with micron-level thickness after ball milling and crushing, the saturation magnetization intensity is obviously improved, and the coercive force is obviously reduced. In table 2, No. 1 is a common sendust sample, and No. 2 is a sheet sendust sample prepared by ball milling and crushing a sendust film prepared by the present invention.

Drawings

FIG. 1 is a schematic view of a metal thin film forming apparatus.

FIG. 2 is a sectional view of a metal thin film formation apparatus.

FIG. 3 is a schematic view showing the operation of the metal thin film formation apparatus.

FIG. 4 is a graph of the morphology of the iron-nickel alloy obtained in example 1.

FIG. 5 is the X-ray spectrum of the Fe-Ni alloy obtained in example 1.

Sequence numbers in the upper figure: the device comprises a transmission shaft 1, a smelting pot 2, a rotating roller 3, a scraper 4, a hydraulic lifting mechanism 5, molten alloy 6 and an alloy film 7.

Detailed Description

The invention will now be further described by way of example with reference to the accompanying drawings.

Example 1

Referring to fig. 1, the device for preparing the metal film comprises a smelting pot 2, a rotating roller 3, a scraping plate 4 and a driving mechanism, wherein the driving mechanism comprises a motor and a speed reducer. The roller 3 is rotatably arranged above the smelting pot 2 through a transmission shaft 1; the scraping plate 4 is fixedly arranged on the upper part of the pot wall on one side of the smelting pot 2, and the scraping plate 4 is in tangential contact with the outer circumference of the rotating roller 3.

The smelting pot 2 is a crucible, the material of the roller 3 and the material of the scraper 4 are both tungsten steel, and the melting point is 2800 ℃.

Example 2

The preparation operation steps of the alloy film are as follows:

(1) weighing 1kg of iron blocks and 1kg of nickel blocks according to the mass ratio of 2: 1. The weighed materials are put into a smelting pot 2 to be heated to 1700 ℃, and the temperature is kept between 1700 ℃ and 1750 ℃ to keep the materials in a molten state.

(2) Referring to fig. 2, the distance between the roller 3 and the liquid level is adjusted by a pair of hydraulic lifting mechanisms 5, so that the roller 3 is just contacted with the iron-nickel alloy melt 6.

(3) Starting a driving mechanism and a cooling water mechanism, wherein the driving mechanism drives the roller 3 to rotate at the rotating speed of 8r/min, and cooling water enters the transmission shaft 1 to solidify the alloy melt 6 on the surface of the roller 3 to form an alloy film with the thickness of about 0.1 mm; referring to fig. 3, when the roller 3 rotates to the scraper 4, the alloy thin film 7 is scraped off by the scraper 4, see fig. 4. The winding device is opened and the iron-nickel alloy thin film scraped by the scraper 4 is collected. The composition measurement of the prepared iron-nickel alloy thin film is shown in FIG. 5.

Example 3

The preparation operation steps of the alloy film are as follows:

(1) weighing 1kg of iron blocks, silicon blocks and aluminum blocks according to the mass ratio of 85:9.6: 5.4. The weighed materials are put into a smelting pot 2 to be heated to 1750 ℃, and the temperature is kept between 1750 ℃ and 1800 ℃ to keep the materials in a molten state.

(2) The distance between the roller 3 and the liquid level is adjusted by a pair of hydraulic lifting mechanisms 5, so that the roller 3 is just contacted with the iron-nickel alloy melt 6.

(3) And starting a driving mechanism and a cooling water mechanism, wherein the driving mechanism drives the rotary roller 3 to rotate at the rotating speed of 5r/min, cooling water enters the transmission shaft 1 to enable the alloy melt 6 to be solidified on the surface of the rotary roller 3 to form an alloy film with the thickness of about 1mm, and when the rotary roller 3 rotates to the scraper 4, the alloy film 7 is scraped through the scraper 4. The winding device is opened and the ferrosilicon aluminum alloy film scraped by the scraper 4 is collected.

Example 4

The preparation operation steps of the alloy film are as follows:

(1) weighing 1kg of iron blocks and silicon blocks according to the mass ratio of 93: 7. The weighed materials are put into a smelting pot 2 to be heated to 1680 ℃, and the temperature is kept between 1680 ℃ and 1700 ℃ to keep the materials in a molten state.

(3) And starting a driving mechanism and a cooling water mechanism, wherein the driving mechanism drives the rotary roller 3 to rotate at the rotating speed of 2r/min, cooling water enters the transmission shaft 1 to enable the alloy melt 6 to be solidified on the surface of the rotary roller 3 to form an alloy film with the thickness of about 2mm, and when the rotary roller 3 rotates to the scraper 4, the alloy film 7 is scraped through the scraper 4. The winding device is opened and the ferrosilicon aluminum alloy film scraped by the scraper 4 is collected.

Claims

1. A metal film preparation device is characterized in that: the device comprises a smelting pot, a rotating roller, a scraping plate and a driving mechanism, wherein the rotating roller is rotatably arranged above the smelting pot through a transmission shaft; the scraper is fixedly arranged on the upper part of one side pot wall of the smelting pot and is in tangential contact with the outer circumference of the rotary roller;

the driving mechanism is a motor and a speed reducer;

the smelting pot is a crucible, the material of the rotating roller and the material of the scraper are both tungsten steel, and the melting point is 2800 ℃;

2. The apparatus for forming a metal thin film according to claim 1, wherein: the transmission shaft is tubular, and a cooling liquid channel is arranged in the tubular.

3. The apparatus for forming a metal thin film according to claim 1, wherein: the transmission shaft is arranged on the smelting pot through a pair of lifting mechanisms, the lifting mechanisms are hydraulic oil cylinders, cylinder bodies of the hydraulic oil cylinders are fixedly arranged on the pot wall of the smelting pot, and rod ends of piston rods of the hydraulic oil cylinders are fixedly connected with the transmission shaft; the piston rod of the hydraulic oil cylinder is made of tungsten steel.

4. The method for producing a metal thin film based on the apparatus for producing a metal thin film according to claim 1, characterized by comprising the steps of:

(1) smelting the metal blocks into molten alloy in a smelting pot at 1600-1800 deg.c, and regulating the rollers to contact the molten alloy via one pair of elevating mechanisms;

(2) starting a driving motor and a speed reducer to drive a rotating roller to rotate at a rotating speed of 2-8r/min, introducing cooling liquid into a transmission shaft, and rapidly cooling the alloy melt when the alloy melt contacts the rotating roller and solidifying the alloy melt on the surface of the rotating roller to form an alloy film with the thickness of 0.1-2 mm;

(3) when the roller rotates to the scraper, the scraper scrapes off the alloy film and collects the alloy film by a winding machine.