Welding material for carbon commutator

Abstract

The invention discloses a solder used for carbon commutator. Chemical components contained by the solder are measured according to weight, and detail components are as the following: 76 to 81 percent of nickel, 12 to 16 percent of chrome and 3 to 12 percent phosphor. The component of the solder takes nickel as a basic body (nickel-based brazing welding powder) and contains a small quantity of minim active elements such as chrome and phosphor, etc., without elements which are harmful for people, thus meeting the environment-friendly requirement. The invention can resist a high temperature in a welding process, which can enhance joint fastness after a commutating segment body is welded with a carbon piece and lead the welded part to thoroughly bear the high speed running of a motor. The solder appears as a paste matter which belongs to a dry-wet compound type. The solder can be equally laid on the outer surface of the commutating segment body by using a welding torch so as to raise work efficiency. Therefore, the mechanical capabilities of strength, wear-resistance capability, etc. of the carbon commutator can be enhanced and service life is also prolonged. The invention is suitable for different fuel conditions.

Description

1. Technical field [0001] The invention relates to a carbon commutator for a motor, in particular to a welding material used for connecting and combining carbon slices and commutator slices (body) of the carbon commutator. 2. Background technology [0002] At present, the carbon commutator includes a commutator piece, a molding compound, and a carbon piece, wherein the carbon piece is arranged on the outer surface of the body of the commutator piece, and the carbon piece cooperates with the carbon brush of the motor. The connection and combination of the carbon segment and the commutator segment (body) adopts a bonding method, and the commutator segment body and the carbon segment are combined by using a silver-copper alloy layer and a mixed strong adhesive layer. Due to the low temperature required for this bonding method (normal temperature is enough), the combination of the commutator and the carbon is not very strong, and it is difficult to meet the high-speed operation ...

AI Technical Summary

Problems solved by technology

Due to the low temperature required for this bonding method (normal temperature is enough), the combination of the commutator and the carbon is not very strong, and it is difficult to meet the high-speed operation requirements of the motor, which affects the mechanical and electrical performance of the carbon commutator. ;Because the mixed strong adhesive used in the mentioned mixed strong adhesive layer is a dry substance, it cannot be sprayed with a welding torch, and it needs to be applied manually, resulting in uneven thickness of the mixed strong adhesive layer, which affects the bonding effect and low work efficiency