Core heat setting process method

A process method and heat-setting technology, applied in the direction of thin-film/thick-film capacitors, laminated capacitors, etc., can solve the problems of core metal layer oxidation, winding film hollowing phenomenon, etc., and achieve obvious effects.

Inactive Publication Date: 2019-10-18
南通海美电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented method involves treating an electrode assembly (EA) inside two different environments before it can be used again or reused later. By doing this, there are fewer defects that could occur during production compared to traditional methods where multiple steps were necessary afterward. Additionally, these techniques allow for more precise control over how well EAs work when they have been put back into use.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the manufacturing process of high voltage tantalum electrolytic condenser (TED) cores by controllably increasing their strength without causing any cracks or other defects that could affect its performance.

Method used

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  • Core heat setting process method

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Effect test

Embodiment 1

[0026] see figure 1 , a core heat-setting process method, comprising the following steps:

[0027] Step 1. Use a tray with a compartment to carry capacitor cores with 1 / 3 of the capacity of the oven. The capacitor cores are separated from each other, and then put into the first oven, and use a vacuum pump to pump the inside of the first oven. Vacuum treatment, keep the vacuum pressure in the box at 4-7mbar, so that the air between the winding metal film in the capacitor core can be discharged, and the bonding degree of the metal film winding can be improved;

[0028] Step 2. Raise the temperature in the first baking oven to 88-91°C and keep it warm for 3-5 hours. Within the temperature range, the surface of the metal mold begins to be pre-shaped to prepare for the subsequent heat treatment;

[0029] Step 3. Transfer the capacitor core to the second oven, dry the nitrogen, remove the moisture in the nitrogen, and then transport the nitrogen to the second oven, discharge the air

Embodiment 2

[0034] Please refer to figure 1 , a core heat-setting process method, comprising the following steps:

[0035] Step 1. Use a tray with a compartment to carry capacitor cores with 1 / 3 of the capacity of the oven. The capacitor cores are separated from each other, and then put into the first oven, and use a vacuum pump to pump the inside of the first oven. Vacuum treatment to keep the vacuum pressure in the box at 6mbar, so that the air between the winding metal films in the capacitor core can be discharged, and the bonding degree of the metal film winding can be improved;

[0036] Step 2. Raise the temperature in the first baking oven to 89°C and keep it warm for 3.5 hours. Within the temperature range, the surface of the metal mold begins to be pre-shaped to prepare for the subsequent heating and heat treatment;

[0037] Step 3. Transfer the capacitor core to the second oven, dry the nitrogen gas, remove the moisture in the nitrogen, then transport the nitrogen gas to the seco

Embodiment 3

[0042] see figure 1 , a core heat-setting process method, comprising the following steps:

[0043] Step 1. Use a tray with a compartment to carry capacitor cores with 1 / 3 of the capacity of the oven. The capacitor cores are separated from each other, and then put into the first oven, and use a vacuum pump to pump the inside of the first oven. Vacuum treatment to keep the vacuum pressure in the box at 5mbar, so that the air between the winding metal films in the capacitor core can be discharged, and the bonding degree of the metal film winding can be improved;

[0044] Step 2. Raise the temperature in the first baking oven to 90°C and keep it warm for 4 hours. Within the temperature range, the surface of the metal mold begins to be pre-shaped to prepare for the subsequent heating and heat treatment;

[0045] Step 3. Transfer the capacitor core to the second oven, dry the nitrogen gas, remove the moisture in the nitrogen, then transport the nitrogen gas to the second oven, disch

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Abstract

The invention discloses a core heat setting process method comprising the steps: step one, placing a capacitor core in a first baking box, performing vacuum pumping in the first baking box and keepingthe vacuum pressure in the box at 4-7 mbar. According to the core heat setting process method, the capacitor core is placed in the first baking box and 4-7 mbar vacuum pumping treatment is performed.The core cutting layer is examined by the microscope, the number of hollows on the cross section is 3-7/mm and the size of the hollow point is phi0.1-0.6 mm. Compared with the conventional heat setting process that the number of the hollows on the cross section is 15-23/mm and the size of the hollow point is 0.8-1 mm, the effect is obtained and then pretreatment at the temperature of 88-91 DEG Cis performed and the heat is preserved for 3-5 h and then the capacitor core is transferred to a second baking box and the second baking box is filled with nitrogen to raise the temperature by 121-128DEG C and the heat is kept for 3.5-5h. The core cutting layer is detected by the microscope and the thickness of the strengthened layer is 1-8 microns so that the effect is obvious in comparison withthe conventional direct heat setting that the detected thickness of the cross section oxide layer is 20-34 microns.

Description

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Claims

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Application Information

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Owner 南通海美电子有限公司
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