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Vacuum-sealed high-capacity direct-current relay ceramic shell and manufacturing method thereof

A DC relay, vacuum sealing technology, applied in relays, electromagnetic relays, electromagnetic relay details and other directions, can solve the problems of low pulling force, low vibration resistance, low strength and hardness, and achieve reduced brittleness, increased strength and The effect of hardness

Active Publication Date: 2014-09-24
LOUDI ANTAEUS ELECTRONICS CERAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is currently the most ideal way to use ceramic vacuum sealing to extinguish the arc, but the current ceramic vacuum tubes are all made of ternary ceramic materials, and the composition of ternary ceramic materials includes Al 2 o 3 , CaCO 3 , SiO 2 , its brittleness is large, its strength and hardness are generally not high, and the pulling force after welding by traditional metallization process is generally 70 Mpa / cm 2 Left and right, low pull-out force, low vibration strength

Method used

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  • Vacuum-sealed high-capacity direct-current relay ceramic shell and manufacturing method thereof
  • Vacuum-sealed high-capacity direct-current relay ceramic shell and manufacturing method thereof
  • Vacuum-sealed high-capacity direct-current relay ceramic shell and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Ingredient synthesis: Weigh Al 2 O 3 100 parts, CaCO 3 3.5 parts, Cr 2 O 3 2.5 parts, SiO 2 1.3 parts, 0.56 parts of MgO, mix the ingredients and put them into the oven for baking, the baking temperature is 150℃, the baking time is 15 hours, and then put into the ball mill for 28 hours to obtain a uniformly refined Mixed raw materials, particle size reaches 4-4.8μm;

[0027] (2) Put the white wax and yellow wax into a single-cylinder mixer for heating and stirring at a heating temperature of 100°C. After being melted, the mixed raw materials obtained after ball milling are put into a fast single-cylinder mixer and fully stirred for 3 hours, and then sieved with a 100 mesh screen , Then put it into a slow mixing drum and stir for 3 hours, the heating temperature is 80℃;

[0028] (3) Hot pressing: Add the slow-stirred mixture into the hot die-casting machine, and press to obtain ceramic blanks;

[0029] (4) Wax dewaxing and sintering: the ceramic blank is dewaxed and sinter...

Embodiment 2

[0035] (1) Ingredient synthesis: Weigh Al 2 O 3 200 copies, CaCO 3 7 parts, Cr 2 O 3 5 parts, SiO 2 2.6 parts, MgO1.64 parts, mix the ingredients and put them into the oven for baking, the baking temperature is 150℃, and the baking time is 15 hours; then put them into a ball mill for 28 hours to obtain a uniformly refined Mixed raw materials, particle size reaches 4-4.8μm;

[0036] (2) Put the white wax and yellow wax into a single-cylinder mixer for heating and stirring at a heating temperature of 100°C. After being melted, the mixed raw materials obtained after ball milling are put into a fast single-cylinder mixer and fully stirred for 3 hours, and then sieved with a 100 mesh screen , Then put it into a slow mixing drum and stir for 3 hours, the heating temperature is 80℃;

[0037] (3) Hot pressing: Add the slow-stirred mixture into the hot die-casting machine, and press to obtain ceramic blanks;

[0038] (4) Wax dewaxing and sintering: the ceramic blank is dewaxed and sintered, ...

Embodiment 3

[0044] (1) Ingredient synthesis: Weigh Al 2 O 3 300 parts, CaCO 3 10.5 parts, Cr 2 O 3 7.5 parts, SiO 2 3.9 parts, MgO3.07 parts, mix the ingredients and put them into the oven for baking, the baking temperature is 150℃, the baking time is 15 hours, and then put into the ball mill for 28 hours to obtain a uniformly refined Mix the raw materials with a particle size of 4-4.8μm; (2) Take white wax and yellow wax and put them in a single-tube mixer for heating and stirring at a heating temperature of 100℃. After being melted, the mixed raw materials obtained after ball milling are put into a fast single-tube mixer and fully stirred After 3 hours, sieved with a 100-mesh screen, then put it into a slow mixing drum and stir for 3 hours, the heating temperature is 80℃;

[0045] (3) Hot pressing: Add the slow-stirred mixture into the hot die-casting machine, and press to obtain ceramic blanks;

[0046] (4) Wax dewaxing and sintering: the ceramic blank is dewaxed and sintered, the temperatu...

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Abstract

The invention discloses a vacuum-sealed high-capacity direct-current relay ceramic shell and a manufacturing method thereof. The relay ceramic shell comprises a ceramic piece, a copper electrode and a kovar alloy cover plate. The ceramic piece is made of five-element ceramic materials. The five-element ceramic materials comprise Al2O3, CaCO3, Cr2O3, SiO2 and MgO. The upper end face and the lower end face of the ceramic piece are partially provided with metal manganese molybdenum layers in a silk printing mode, the metal manganese molybdenum layers are sintered at high temperature to be combined with ceramic, chemical nickel plating is conducted on the metal manganese molybdenum layers, the metal manganese molybdenum layers and metal such as alloy and oxygen-free copper can be welded after chemical nickel plating, and welding drawing force can reach more than 90 Mpa / cm<2>. According to the vacuum-sealed high-capacity direct-current relay ceramic shell and the manufacturing method of the vacuum-sealed high-capacity direct-current relay ceramic shell, existing ceramic is metallized, ceramic materials and metallized materials are improved, metal materials are added to the ceramic, original three-element materials are changed into the five-element materials, the strength and rigidity of the ceramic are greatly improved, and the brittleness is lowered.

Description

Technical field [0001] The invention belongs to the field of inorganic ceramic materials, and specifically relates to a vacuum-sealed large-capacity DC relay ceramic casing and a preparation method thereof. Background technique [0002] The world advocates environmental protection and resource utilization. New energy power batteries are an effective way to solve energy. Firstly, they are developed in small electric vehicles. At present, they are used to replace fuel-engined vehicles in automobile manufacturing. New energy vehicles are for motor control systems. The requirements are more stringent. As the core component of new energy vehicles, motor control is not only related to vehicle performance, but also closely related to driving safety. The high-performance motor control system puts high demands on the processing power and safety features of the processor. The voltage of passenger cars is as high as 336VDC, passenger cars are 288VDC, and the power of electric motors is 60...

Claims

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Application Information

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IPC IPC(8): C04B35/10C04B35/622C04B41/88C04B37/02H01H50/02
Inventor 康丁华
Owner LOUDI ANTAEUS ELECTRONICS CERAMICS
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