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A method for manufacturing a small circuit breaker integrated static contact bridge

A technology of a small circuit breaker and a manufacturing method, which is applied in the manufacturing of emergency protection devices, circuits, electrical components, etc., can solve the problems of high production costs, large investment in human and material resources, and increase in working temperature, and save energy and human and material resources. The effect of resource, production cost reduction, and overall performance improvement

Inactive Publication Date: 2016-03-30
张树堂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, there are disadvantages of potential safety hazards such as large body resistance, high working temperature, easy fusion welding, short life, and poor performance.
In addition, riveting and welding are indispensable processes in the current production of the static contact bridge of the miniature circuit breaker. The investment of manpower and material resources is large, and the energy consumption is high, so that the production cost remains high.

Method used

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  • A method for manufacturing a small circuit breaker integrated static contact bridge
  • A method for manufacturing a small circuit breaker integrated static contact bridge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: (the static contact bridge is copper inlaid with silver)

[0024] 1. The surface treated T 2 The copper strip is grooved in the direction of extension at 3 / 4 of the bandwidth, and the groove width is 3.9mm;

[0025] 2. Lay the surface-treated silver tape matching the groove width of 3.9mm in the groove;

[0026] 3. Use argon arc welding to seal the silver strip laid in the groove and the edge of the groove to obtain the inlaid blank strip body (such as figure 1 );

[0027] 4. After surface-treating the blank strip body of 3, put it into an electric furnace with a furnace temperature of 790°C and protect it with hydrogen for 2 hours;

[0028] 5. Continuously hot-roll the heated blank strip body in 4 under the protection of argon gas and induction heating to obtain a blank strip with a thickness of 110% of the required size (the required size is 1.20mm) ;

[0029] 6. Diffusion annealing is carried out on the primary strip of 5 to eliminate stress at a t...

Embodiment 2

[0032] Embodiment 2: (the static contact bridge is copper inlaid with silver alloy)

[0033] 1. The surface treated T 3 The copper strip is grooved in the direction of extension at 4 / 5 of the bandwidth, and the groove width is 2.9mm;

[0034] 2. Lay the surface-treated silver tape matching the groove width of 2.9mm in the groove;

[0035] 3. Use argon arc welding to seal the silver alloy strip laid in the groove and the edge of the groove to obtain an inlaid blank strip body (such as figure 1 );

[0036] 4. After the surface treatment of the blank body of 3, put it into an electric furnace with a furnace temperature of 820 ° C and protect it with argon gas and heat it for 2.5 hours;

[0037] 5. Continuously hot rolling the heated blank strip body in 4 under the protection of argon gas and induction heating to obtain a blank strip with a thickness of 115% of the required size;

[0038] 6. Diffusion annealing is carried out on the primary strip of 5 to eliminate stress, the ...

Embodiment 3

[0041] Embodiment three: (the static contact bridge is brass inlaid with silver)

[0042] 1. The surface-treated H 62 For the brass strip, a groove is made in the extension direction of 3 / 4 of the bandwidth, and the groove width is 3.7mm;

[0043] 2. Lay the surface-treated silver tape matching the groove width of 3.7mm in the groove;

[0044] 3. Use argon arc welding to seal the silver strip laid in the groove and the edge of the groove to obtain the inlaid blank strip body (such as figure 1 );

[0045] 4. After surface-treating the blank strip body of 3, put it into an electric furnace with a furnace temperature of 810°C and protect it with hydrogen for 2 hours;

[0046] 5. Continuously hot-roll the 4 heated blank strips under the protection of argon gas and induction heating to obtain a blank strip with a thickness of 120% of the required size;

[0047] 6. Diffusion annealing is carried out on the primary strip of 5 to eliminate stress. The temperature of the electric f...

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Abstract

The invention discloses a manufacturing method of an integrated static contact bridge of a miniature circuit breaker. The method comprises the following processing steps of: 1, arranging a groove in a red copper belt or a brass strip along a length direction; 2, laying a silver belt or a silver alloy belt in the groove; 3, welding an edge of the groove to obtain an initial green body; 4, putting the initial green body into a gas-protected electric furnace with the temperature of 790-840 DEG C, and heating for 1.5h-3h; 5, continuously hot rolling to prepare an initial blank belt material under heating and thermal preserving, annealing to relieve stress, and cold rolling to obtain a required dimension; and 6, punching on a one-step molding punch die to obtain the integrated static contact bridge. A riveted structure of a rivet contact and the static contact bridge and a welding structure of a plain film contact and the static contact bridge are replaced, so that the whole performances are obviously improved, and the safety and the reliability are realized. A riveting process and a welding process are omitted, so that a large amount of energy and human and material resources are saved, the function of energy-saving and consumption-reducing is played, the production cost is obviously reduced, and the economic effect and the social effect are obvious.

Description

Technical field: [0001] The invention relates to a method for manufacturing a contact bridge for low-voltage electrical products, in particular to a method for manufacturing a small circuit breaker integrated static contact bridge. Background technique: [0002] Low-voltage circuit breakers are widely used in industrial and civil power distribution, especially small circuit breakers are widely used in terminal protection of building electrical appliances. The development trend of miniature circuit breakers is intensification, high breaking, low noise, safe and reliable work and long life. The current production of static contact bridge parts for small and medium-sized circuit breakers is to form the static contact bridge parts by riveting or welding the contacts on the static contact bridge. The static contact bridge parts formed by riveting, the temperature rise in the work after installation, when it is heated and expanded and cooled, the riveted rivets and the contact br...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H69/00
Inventor 郑晓杰张树堂陈建新黄仁平唐艳华
Owner 张树堂
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