Method for manufacturing steel strip combined oil-control ring wiper blade ring and backing ring material flat steel strip molding

Abstract

The invention discloses a manufacturing method of a steel strip compound oil-ring shaving-ring and lining-ring formed flat steel strip. The method is that an eligible coil strip is drawn into a round steel wire with a section area resembling that of a finished flat steel strip; then the round steel wire is rolled by a rolling mill and is drawn by a rolling drawplate, or then is drawn by a flat drawn plate to obtain required section area and size. The ratio between the section area of the round steel wire and that of a flat steel strip which is rolled by the rolling machine and the rolling drawplate is controlled in the range of 1 : 1.2. The manufacturing method has high working efficiency, quick speed, high section form and size accuracy, good strip-forming capability and low manufacturing cost.

Description

Technical field [0001] The invention relates to a manufacturing method for forming a flat steel strip. This profiled flat steel strip is used to manufacture wiper rings and backing rings in steel belt combination oil rings for internal combustion engines. technical background [0002] The steel belt combination oil ring in the piston ring set consists of a scraper ring and a backing ring. Both the scraper ring and the lining ring are made of formed flat steel strips with specific cross-sectional shape, size and material. These formed flat steel strips are currently cut longitudinally from wider steel strips into more than two steel strips, and then Both sides of the sheared strip are broached to a specific size and shape on a broaching machine. The main disadvantages of this processing method are: 1. Since it is cut with a wide steel strip, the length of each steel strip after cutting is limited, which directly affects the processing efficiency of the subsequent process an...

AI Technical Summary

Problems solved by technology

The main disadvantages of this processing method are: 1. Since it is cut with a wide steel strip, the length of each steel strip after cutting is limited, which directly affects the processing efficiency of the subsequent process and increases the adjustment of the subsequent forming machine tool. workload

2. Since the size and shape in the width direction are obtained by cutting, as the broaching blade wears, the accuracy of size and shape will also deteriorate, thus affecting product quality

Images