阅读说明：本技术 一种电容器用锌铝金属化膜蒸镀工艺 (Zinc-aluminum metallized film evaporation process for capacitor ) 是由 徐培畅 于 2020-06-30 设计创作，主要内容包括：本发明公开了一种电容器用锌铝金属化膜蒸镀工艺,包括蒸镀机,它包括以下步骤：一、把蒸镀机速度初设到11米/秒以下,在蒸镀机上分别设置铝蒸发器、锌蒸发器和抗氧化油蒸发器,铝蒸发器、锌蒸发器和抗氧化油蒸发器依次设在膜卷输送方向上,膜卷按顺序依次经过铝蒸发器、锌蒸发器和抗氧化油蒸发器；二、先把蒸发系统对应的钟罩合上,捞出锌锅里的杂质和表面氧化物,把锌锅放入锌蒸发器内,本发明提供一种薄膜产品质量好、客户投诉率低且退货率低的电容器用锌铝金属化膜蒸镀工艺。(The invention discloses a zinc-aluminum metallized film evaporation process for a capacitor, which comprises an evaporator and comprises the following steps: firstly, setting the speed of an evaporator to be less than 11 m/s, respectively arranging an aluminum evaporator, a zinc evaporator and an antioxidant oil evaporator on the evaporator, wherein the aluminum evaporator, the zinc evaporator and the antioxidant oil evaporator are sequentially arranged in the conveying direction of a film roll, and the film roll sequentially passes through the aluminum evaporator, the zinc evaporator and the antioxidant oil evaporator; and secondly, closing a bell jar corresponding to the evaporation system, fishing out impurities and surface oxides in the zinc pot, and putting the zinc pot into a zinc evaporator.)

1. The utility model provides a zinc aluminium metallized film coating by vaporization technology for condenser, includes the coating by vaporization machine, its characterized in that: it comprises the following steps:

firstly, setting the speed of an evaporator to be less than 11 m/s, arranging an aluminum evaporator, a zinc evaporator and an antioxidant oil evaporator on the evaporator, sequentially arranging the aluminum evaporator, the zinc evaporator and the antioxidant oil evaporator in the conveying direction of a film roll, and sequentially passing the film roll through the aluminum evaporator, the zinc evaporator and the antioxidant oil evaporator;

closing a bell jar corresponding to the evaporation system, fishing out impurities and surface oxides in the zinc pot, and putting the zinc pot into a zinc evaporator;

pressing a winding button to observe the test paper condition of the winding system, and closing a bell jar corresponding to the winding system after the test paper condition is normal;

fourthly, the evaporation system, the winding system, the bell jar corresponding to the evaporation system and the bell jar corresponding to the winding system form a vacuum chamber, the vacuum chamber is closed, and the system automatically starts to work according to a vacuum button cooling and pump set program;

fifthly, heating the evaporation boat and automatically heating the shielding oil, controlling the working temperature of the oil can to be 125-144 ℃, and controlling the working temperature of the oil port to be 145-162 ℃;

sixthly, starting winding, and respectively opening an aluminum evaporator cover plate, a zinc evaporator cover plate and an antioxidant oil evaporator cover plate when the speed rises to an initial set value;

beginning coating, bottoming the evaporated aluminum on the capacitor by using an aluminum evaporator to form an aluminum layer, covering a zinc layer on the surface of the aluminum layer by using a zinc evaporator, and finally covering an antioxidant oil layer on the zinc layer by using an antioxidant oil evaporator cover plate; the plating thickness square resistance monitoring system indicates the reading and automatically controls the plating thickness square resistance value to reach a set value;

and eighthly, when the winding length reaches a set value, automatically stopping winding, enabling the machine to enter a parking automatic program, folding the aluminum evaporator cover plate, the zinc evaporator cover plate and the antioxidant oil evaporator cover plate, heating the main drum, heating for 20-40 seconds to evaporate residual aluminum on the evaporation boat, then turning off a power supply of the evaporation boat, heating the main drum to room temperature, opening an air release valve, and breaking the air to release air.

2. The evaporation process of the zinc-aluminum metallized film for the capacitor as claimed in claim 1, characterized in that: the speed of the evaporator is initially set to 6-7 m/s.

3. The evaporation process of the zinc-aluminum metallized film for the capacitor as claimed in claim 1, characterized in that: the evaporator is selected from MULTIMET 650 or CAP-M650.

4. The evaporation process of the zinc-aluminum metallized film for the capacitor as claimed in claim 3, characterized in that: and seventhly, the width of the film roll on the evaporation machine is smaller than or equal to 18mm, the evaporation machine replaces new oil before the 1 st film roll and takes 12 film rolls as a new oil replacing period, and the oil quantity height of the visual hole of the oil tank is less than 80% through visual inspection.

5. The evaporation process of the zinc-aluminum metallized film for the capacitor as claimed in claim 4, characterized in that: the coating by vaporization machine selects MULTIMET 650, the width of a screen belt of the film roll is 3mm, the temperature of an oil pot is 138 ℃ and the temperature of an oil port is 155 ℃ in a new oil state, and the oil pot is kept unchanged, 60ml of new oil is added after 3 film rolls are coated by vaporization, and the temperature of the oil pot is 140 ℃; and 3 film rolls are in a new oil adding period, and the temperature of the oil can is increased by 2 ℃ until the 13 th film roll is completely replaced with new oil.

6. The evaporation process of the zinc-aluminum metallized film for the capacitor as claimed in claim 4, characterized in that: the coating by vaporization machine selects MULTIMET 650, the width of a screen belt of the film roll is 2mm, the temperature of an oil pot is 136 ℃ and the temperature of an oil port is 155 ℃ in a new oil state, and 60ml of new oil is added after 3 film rolls are coated by vaporization, and the temperature of the oil pot is 138 ℃; and 3 film rolls are in a new oil adding period, and the temperature of the oil can is increased by 2 ℃ until the 13 th film roll is completely replaced with new oil.

7. The evaporation process of the zinc-aluminum metallized film for the capacitor as claimed in claim 4, characterized in that: the evaporation plating machine adopts CAP-M650, the width of a screen belt of the film roll is 3mm, the temperature of an oil pot is 133 ℃, the temperature of an oil port is 147 ℃ in a new oil state, 60ml of new oil is added after 3 film rolls are evaporated, the temperature of the oil pot is 135 ℃, and the temperature of the oil port is 149 ℃; and 3 film rolls are in a new oil adding period, and the temperatures of an oil pot and an oil port are respectively increased by 2 ℃ until the 13 th film roll is completely replaced with new oil.

8. The evaporation process of the zinc-aluminum metallized film for the capacitor as claimed in claim 4, characterized in that: the CAP-M650 is selected as the evaporator, the width of a screen belt of the film roll is 2mm, the temperature of an oil pot is 132 ℃ and the temperature of an oil port is 145 ℃ in a new oil state, 60ml of new oil is added after 3 film rolls are evaporated, the temperature of the oil pot is 134 ℃ and the temperature of the oil port is 147 ℃; and 3 film rolls are in a new oil adding period, and the temperatures of an oil pot and an oil port are respectively increased by 2 ℃ until the 13 th film roll is completely replaced with new oil.

9. The evaporation process of the zinc-aluminum metallized film for the capacitor as claimed in claim 1, characterized in that: the heating temperature of the zinc evaporator is controlled to be 300-800 ℃.

Technical Field

The invention relates to the technical field of evaporation plating processes of capacitors, in particular to an evaporation plating process of a zinc-aluminum metallized film for a capacitor.

Background

The capacitor film is mostly a composite zinc-aluminum metallized film, in particular to an aluminum-zinc two-layer composite coating structure; the metal aluminum plating layer has better adhesion performance relative to a high polymer film material, and the production process is easy to process, but the metal aluminum plating layer is easy to oxidize in the air to form a compact oxidation layer taking aluminum oxide as a main component, and the compact oxidation layer can cause the capacity of the capacitor to be rapidly reduced when the capacitor works under the high-voltage and high-current alternating current; the adhesion performance of the metal zinc coating is poor relative to that of the polymer film material, but the metal zinc coating is evaporated outside the metal aluminum coating, so that the formation of an oxide layer on the inner aluminum coating can be well prevented, and the condition that the capacity of the capacitor is rapidly reduced can not occur. According to the prior art, the film product produced by the evaporation equipment has poor quality and high customer complaint rate and return rate.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the defects of the prior art are overcome, and the evaporation plating process of the zinc-aluminum metallized film for the capacitor is provided, wherein the film product quality is good, the customer complaint rate is low, and the return rate is low.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a zinc-aluminum metallized film evaporation process for a capacitor comprises an evaporator, and comprises the following steps:

firstly, setting the speed of an evaporator to be less than 11 m/s, respectively arranging an aluminum evaporator, a zinc evaporator and an antioxidant oil evaporator on the evaporator, wherein the aluminum evaporator, the zinc evaporator and the antioxidant oil evaporator are sequentially arranged in the conveying direction of a film roll, and the film roll sequentially passes through the aluminum evaporator, the zinc evaporator and the antioxidant oil evaporator;

closing a bell jar corresponding to the evaporation system, fishing out impurities and surface oxides in the zinc pot, and putting the zinc pot into a zinc evaporator;

pressing a winding button to observe the test paper condition of the winding system, and closing a bell jar corresponding to the winding system after the test paper condition is normal;

fourthly, the evaporation system, the winding system, the bell jar corresponding to the evaporation system and the bell jar corresponding to the winding system form a vacuum chamber, the vacuum chamber is closed, and the system automatically starts to work according to a vacuum button cooling and pump set program;

fifthly, heating the evaporation boat and automatically heating the shielding oil, controlling the working temperature of the oil can to be 125-144 ℃, and controlling the working temperature of the oil port to be 145-162 ℃;

sixthly, starting winding, and respectively opening an aluminum evaporator cover plate, a zinc evaporator cover plate and an antioxidant oil evaporator cover plate when the speed rises to an initial set value;

beginning coating, bottoming the evaporated aluminum on the capacitor by using an aluminum evaporator to form an aluminum layer, covering a zinc layer on the surface of the aluminum layer by using a zinc evaporator, and finally covering an antioxidant oil layer on the zinc layer by using an antioxidant oil evaporator cover plate; the plating thickness square resistance monitoring system indicates the reading and automatically controls the plating thickness square resistance value to reach a set value;

and eighthly, when the winding length reaches a set value, automatically stopping winding, enabling the machine to enter a parking automatic program, folding the aluminum evaporator cover plate, the zinc evaporator cover plate and the antioxidant oil evaporator cover plate, heating the main drum, heating for 20-40 seconds to evaporate residual aluminum on the evaporation boat, then turning off a power supply of the evaporation boat, heating the main drum to room temperature, opening an air release valve, and breaking the air to release air.

After adopting the structure, compared with the prior art, the invention has the following advantages: the speed of an evaporator is initially set to be lower than 11 m/s, then vacuumizing is carried out, then an evaporation boat is heated while shielding oil is heated, the working temperature of an oil can is controlled to be 125-144 ℃, the working temperature of an oil port is controlled to be within the range of 145-162 ℃, an aluminum evaporator is required to be opened firstly when winding starts, a zinc evaporator cover plate is opened for evaporation, finally an antioxidant oil evaporator cover plate is opened, at the moment, coating starts, aluminum is evaporated on a film, a layer of zinc is covered at the bottom, and an antioxidant oil layer is coated at last to prevent oxidation of the zinc layer.

Preferably, the speed of the evaporator in the first step is initially set to 6-7 m/s, and the speed is preferably 6, 6.5 or 7 m/s.

Preferably, the evaporator is selected from multi-IMET 650 or CAP-M650.

Preferably, in the seventh step, the width of the film roll on the evaporator is less than or equal to 18mm, the evaporator is used for replacing the fresh oil before the 1 st film roll, and the 12 film rolls are used as a period for replacing the fresh oil, the oil height of the visual hole of the oil tank is visually measured to be less than 80%, so that the oil consumption is low, the product quality is good, and the cost is low.

Preferably, the evaporator selects MULTIMET 650, the width of a screen belt of the film roll is 3mm, the temperature of an oil pot is 138 ℃ and the temperature of an oil port is 155 ℃ in a new oil state, the oil pot is kept unchanged, 60ml of new oil is added after 3 film rolls are evaporated, and the temperature of the oil pot is 140 ℃; 3 membrane rolls are for increasing new oil cycle, and the oilcan temperature increases 2 ℃, and until 13 membrane rolls change new oil completely, for multmet 650, the screen width is 3mm, the selection corresponds heating temperature and refueling mode.

Preferably, the evaporator selects MULTIMET 650, the width of a screen belt of the film roll is 2mm, the temperature of an oil pot is 136 ℃ and the temperature of an oil port is 155 ℃ in a new oil state, the oil pot is kept unchanged, 60ml of new oil is added after 3 film rolls are evaporated, and the temperature of the oil pot is 138 ℃; 3 membrane rolls are for increasing new oil cycle, and the oilcan temperature increases 2 ℃, and until 13 membrane rolls change new oil completely, for multmet 650, the screen width is 2mm, the selection corresponds heating temperature and refueling mode.

Preferably, the evaporation plating machine is CAP-M650, the width of a screen belt of the film roll is 3mm, the temperature of an oil pot is 133 ℃, the temperature of an oil port is 147 ℃ in a new oil state, 60ml of new oil is added after 3 film rolls are evaporated, the temperature of the oil pot is 135 ℃, and the temperature of the oil port is 149 ℃; 3 membrane book are for increasing new oil cycle, and oilcan and hydraulic fluid port temperature increase 2 ℃ respectively, and until 13 th membrane book change new oil completely, for CAP-M650, the screen width is 3mm, select corresponding heating temperature and refuel mode.

Preferably, the evaporation plating machine is CAP-M650, the width of a screen belt of the film roll is 2mm, the temperature of an oil pot is 132 ℃ and the temperature of an oil port is 145 ℃ in a new oil state, 60ml of new oil is added after 3 film rolls are evaporated, the temperature of the oil pot is 134 ℃ and the temperature of the oil port is 147 ℃; 3 membrane book are for increasing new oil cycle, and oilcan and hydraulic fluid port temperature increase 2 ℃ respectively, and until 13 th membrane book change new oil completely, for CAP-M650, the screen width is 2mm, select corresponding heating temperature and refuel mode.

Preferably, the heating temperature of the zinc evaporator is controlled to be 300-800 ℃, the power of a furnace opening is controlled to be 75-55%, the power of a furnace bore is controlled to be 20-50%, the heating temperature of the zinc evaporator is preferably 300, 500 or 800 ℃, the power of a hearth is controlled to be 20, 30 or 50%, and the power of the furnace opening is controlled to be 75, 60 or 55%.

Detailed Description

The present invention will be further described with reference to the following embodiments.

The invention provides a zinc-aluminum metallized film evaporation process for a capacitor, which comprises an evaporator and comprises the following steps:

a zinc-aluminum metallized film evaporation process for a capacitor comprises the following steps:

firstly, setting the speed of an evaporator to be less than 11 m/s, respectively arranging an aluminum evaporator, a zinc evaporator and an antioxidant oil evaporator on the evaporator, wherein the aluminum evaporator, the zinc evaporator and the antioxidant oil evaporator are sequentially arranged in the conveying direction of a film roll, and the film roll sequentially passes through the aluminum evaporator, the zinc evaporator and the antioxidant oil evaporator;

firstly, closing a bell jar corresponding to the evaporation system, dragging the trolley to the edge of the bell jar to be close to the zinc evaporator, dragging the zinc pot into the trolley, slightly dragging the zinc pot into a fixed groove on the trolley by using iron tongs, and paying attention to the fact that molten liquid zinc in the zinc pot cannot overflow; fishing out impurities and surface oxides in the zinc pot, putting the zinc pot into a zinc evaporator, and fishing out the impurities and the surface oxides in the zinc pot by using an iron scraper;

pressing a winding button to observe the test paper condition of the winding system, and closing a bell jar corresponding to the winding system after the test paper condition is normal;

fourthly, the evaporation system, the winding system, the bell jar corresponding to the evaporation system and the bell jar corresponding to the winding system form a vacuum chamber, the vacuum chamber is closed, and the system automatically starts to work according to a vacuum button cooling and pump set program; specifically, when vacuumizing, the vacuum valve is closed, the upper chamber isolation valve and the lower chamber isolation valve are opened, the two roots pumps are closed, COOLING work is carried out to a COOLING state, and the backing pump is used for roughly vacuumizing; when the vacuum degree reaches 4.0E-4Mbar, the two roots pumps are both opened, the upper chamber isolation valve and the lower chamber isolation valve are closed, the bell jar is the protective door on two sides of the evaporator, and the evaporation system and the winding system are respectively positioned in two sides of the evaporator.

Fifthly, heating the evaporation boat and automatically heating the shielding oil, controlling the working temperature of the oil can to be 125-144 ℃, and controlling the working temperature of the oil port to be 145-162 ℃;

sixthly, starting winding, and respectively opening an aluminum evaporator cover plate, a zinc evaporator cover plate and an antioxidant oil evaporator cover plate when the speed rises to an initial set value;

beginning coating, bottoming the evaporated aluminum on the capacitor by using an aluminum evaporator to form an aluminum layer, covering a zinc layer on the surface of the aluminum layer by using a zinc evaporator, and finally covering an antioxidant oil layer on the zinc layer by using an antioxidant oil evaporator cover plate; the plating thickness square resistance monitoring system indicates the reading and automatically controls the plating thickness square resistance value to reach a set value;

and eighthly, when the winding length reaches a set value, automatically stopping winding, enabling the machine to enter a parking automatic program, folding the aluminum evaporator cover plate, the zinc evaporator cover plate and the antioxidant oil evaporator cover plate, heating the main drum, heating for 20-40 seconds to evaporate residual aluminum on the evaporation boat, then closing an evaporation boat power supply, heating the main drum to room temperature, opening an air release valve, breaking the air to release air, and preparing for work between material loading and unloading and the next period of coating. When 5000 m is left in the evaporation process (10 min is left) or the film is arranged to be unloaded after the evaporation is finished, the next production is ready. Can not be placed in a workshop too early to avoid the influence of moisture absorption on quality.

The model specification is as follows: the square resistance requirement is as follows: (thickening square resistance) 2.5 +/-0.3 omega/□; .