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Machining method of spark plug cap winding resistor

A technology of wire-wound resistors and processing methods, which is applied in the direction of spark plugs, wound resistor elements, circuits, etc., can solve the problems of non-conduction and easy falling off of wire-wound resistors, achieve beautiful wire-wound resistors, firm connections, and eliminate non-conductive effect of common phenomena

Active Publication Date: 2014-12-24
CHONGQING CONGREN ELECTROMECHANICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The welding process between the alloy wire and the metal cap is spot welding. Since spot welding is prone to false welding or false welding in the frequent production process, the spot welding between the alloy wire and the metal cap will be damaged during the use of the wirewound resistor. Easy to fall off, resulting in non-conduction of the winding resistor

Method used

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  • Machining method of spark plug cap winding resistor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Such as figure 1 As shown, this embodiment includes the following steps:

[0018] 1) Punching a 0.27mm thick chromium plate to form a metal cap 2, and press-fitting the metal cap 2 to both ends of the porcelain rod 1;

[0019] 2) Wrap the alloy wire 3 on the body of the porcelain rod 1, so that the two ends of the alloy wire 3 correspond to the two metal caps 2 one by one, and the ends of the alloy wire 3 are welded to the corresponding metal caps 2 by spot welding;

[0020] 3) Apply silver-copper paste to the joint between the alloy wire 3 and the metal cap 2, and then bake in an oven for 25 minutes at a temperature of 75°C, so that the silver-copper paste is solidified to form silver-copper A paste layer 4, a short section of the alloy wire 3 near the end is bonded and fixed on the metal cap 2 through the silver-copper paste layer 4;

[0021] 4) Continuously coat high-temperature paint three times on the outside of the open end of the metal cap 2 and the body of the...

Embodiment 2

[0023] Such as figure 1 As shown, this embodiment includes the following steps:

[0024] 1) Punching a 0.3mm thick chromium plate to form a metal cap 2, and press-fitting the metal cap 2 to both ends of the porcelain rod 1;

[0025] 2) Wrap the alloy wire 3 on the body of the porcelain rod 1, so that the two ends of the alloy wire 3 correspond to the two metal caps 2 one by one, and the ends of the alloy wire 3 are welded to the corresponding metal caps 2 by spot welding;

[0026] 3) Apply silver-copper paste to the joint between the alloy wire 3 and the metal cap 2, and then bake in an oven for 30 minutes at a temperature of 70°C, so that the silver-copper paste is solidified to form silver-copper A paste layer 4, a short section of the alloy wire 3 near the end is bonded and fixed on the metal cap 2 through the silver-copper paste layer 4;

[0027] 4) Continuously coat high-temperature paint three times on the outside of the open end of the metal cap 2 and the body of the ...

Embodiment 3

[0029] Such as figure 1 As shown, this embodiment includes the following steps:

[0030] 1) Punching a 0.33mm thick chrome plate to form a metal cap 2, and press-fitting the metal cap 2 to both ends of the porcelain rod 1;

[0031] 2) Wrap the alloy wire 3 on the body of the porcelain rod 1, so that the two ends of the alloy wire 3 correspond to the two metal caps 2 one by one, and the ends of the alloy wire 3 are welded to the corresponding metal caps 2 by spot welding;

[0032] 3) Apply silver-copper paste to the joint between the alloy wire 3 and the metal cap 2, and then bake in an oven for 35 minutes at a temperature of 65°C, so that the silver-copper paste is solidified to form silver-copper A paste layer 4, a short section of the alloy wire 3 near the end is bonded and fixed on the metal cap 2 through the silver-copper paste layer 4;

[0033] 4) Continuously coat high-temperature paint three times on the outside of the open end of the metal cap 2 and the body of the p...

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Abstract

The invention discloses a machining method of a spark plug cap winding resistor. The method includes the steps of firstly, pressing metal caps (2) at the two ends of a ceramic stick (1); secondly, winding an alloy wire (3) around the stick body of the ceramic stick (1), and welding the ends of the alloy wire (3) to the corresponding metal caps (2); thirdly, coating the welding positions of the alloy wire (3) and the metal caps (2) with silver copper slurry, and forming a silver copper slurry layer (4) after the silver copper slurry is solidified; fourthly, coating the outer faces of open ends of the metal caps (2) and the portion, between the two metal caps (2), of the stick body of the ceramic stick (1) with high-temperature paint, sending the metal caps (2) and the ceramic stick (1) into an oven to be baked, and solidifying the high-temperature paint to form a high-temperature paint layer (5). The alloy wire and the metal caps are bonded through the silver copper slurry, the connection reliability between the alloy wire and the metal caps is ensured on the premise that the alloy wire is not damaged, and therefore the conductivity of the winding resistor is effectively improved, and the machining method has the advantages of being ingenious in design, simple in structure, easy to refit, low in refit cost and the like.

Description

technical field [0001] The invention relates to a spark plug cap part, in particular to a processing method for a wire-wound resistor on the spark plug cap. Background technique [0002] Spark plug cap is an important part of automobiles, motorcycles and general machines. It is used to connect high-voltage wires and spark plugs. Its quality directly affects the starting performance of automobiles, motorcycles or general machines. The wire-wound resistance is installed in the spark plug cap, which is composed of a porcelain rod, an alloy wire and a metal cap. The metal cap is pressed on both ends of the porcelain rod, and the alloy wire is wound on the porcelain rod. metal cap. The welding process between the alloy wire and the metal cap is spot welding. Since spot welding is prone to false welding or false welding in the frequent production process, the spot welding between the alloy wire and the metal cap will be damaged during the use of the wirewound resistor. It is eas...

Claims

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Application Information

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IPC IPC(8): H01T13/40H01C17/04
Inventor 李从仁
Owner CHONGQING CONGREN ELECTROMECHANICAL