Processing technology for exhaust pipe sealing ring

Abstract

The invention relates to a processing technology for a multi-circle laminated exhaust pipe sealing ring used in an automobile exhaust pipe, and solves the problem that the conventional processing method for the sealing ring is unsuitable for an imported closed sealing ring. The technology comprises the following steps of: (1) selecting materials and coiling a spring; (2) pressing a rough blank; (3) bending and flushing the end of the sealing ring; (5) tempering at an intermediate temperature; (6) finishing and cleaning the internal surface of the sealing ring; (7) oiling; and (8) packaging and warehousing. The spring is coiled by a multi-roller coiling unit, so that the diameter of the sealing ring can reach the maximum accuracy, and a circular ring or an elliptical ring can be produced by programming according to different requirements; the end is bent and flushed after pressing, so that the smoothness of the sealing ring is ensured, and torsional force cannot be generated during use; and the sealing ring is made into a wave shape by a pitch roller or a pressing mold, so that the spring pressure of the sealing ring is increased.

Description

Technical field

[0001] The invention relates to a processing technology of a sealing ring, in particular to a processing technology of a multi-lap stacked exhaust pipe sealing ring used in an automobile exhaust pipe. Background technique

[0002] With the vigorous development of my country's internal combustion engine industry, advanced engine models introduced from abroad have now been widely used in my country. The localization of internal combustion engine repair parts and main engine production parts is also being solved continuously.

[0003] In medium and high-power turbocharged diesel engines, the exhaust pipe has a relatively large temperature change range when the engine is working and non-working, and the exhaust pipe is longer. At present, segmented exhaust pipes such as six-cylinder engines are mostly used in foreign countries. There is one exhaust manifold for three cylinders. Sealing rings are used to prevent leakage. The high-temperature and high-pressure exhaust ga...

Examples

Embodiment

[0028] Example: A processing technology of the exhaust pipe sealing ring (see attached figure 1 ), including the following steps:

[0029] (1) Select the material, select a single layer of strip material, and coil the spring on the multi-roll winding unit to form a two-loop structure, cut off the ends of the strip material to form a thick seal ring, and the distance between the two ends is 4 times the width of the strip material, the multi-roll winding unit adopts 5 round rollers arranged symmetrically in the center, the round rollers are enclosed in a circle, and the pitch rollers are arranged at the positions corresponding to the round rollers, and the pitch rollers are arranged in a wave shape , The strip material is rolled into a wave shape when passing through the position of the pitch roller;

[0030] (2) Combine the rough embryo and place the coil spring on the compression mold. The compression mold has a wave-shaped undulating surface, which corresponds to the wave shape of...

Technical field

[0001] The invention relates to a processing technology of a sealing ring, in particular to a processing technology of a multi-lap stacked exhaust pipe sealing ring used in an automobile exhaust pipe. Background technique

[0002] With the vigorous development of my country's internal combustion engine industry, advanced engine models introduced from abroad have now been widely used in my country. The localization of internal combustion engine repair parts and main engine production parts is also being solved continuously.

[0003] In medium and high-power turbocharged diesel engines, the exhaust pipe has a relatively large temperature change range when the engine is working and non-working, and the exhaust pipe is longer. At present, segmented exhaust pipes such as six-cylinder engines are mostly used in foreign countries. There is one exhaust manifold for three cylinders. Sealing rings are used to prevent leakage. The high-temperature and high-pressure exhaust ga...

Examples

Embodiment

[0028] Example: A processing technology of the exhaust pipe sealing ring (see attached figure 1 ), including the following steps:

[0029] (1) Select the material, select a single layer of strip material, and coil the spring on the multi-roll winding unit to form a two-loop structure, cut off the ends of the strip material to form a thick seal ring, and the distance between the two ends is 4 times the width of the strip material, the multi-roll winding unit adopts 5 round rollers arranged symmetrically in the center, the round rollers are enclosed in a circle, and the pitch rollers are arranged at the positions corresponding to the round rollers, and the pitch rollers are arranged in a wave shape , The strip material is rolled into a wave shape when passing through the position of the pitch roller;

[0030] (2) Combine the rough embryo and place the coil spring on the compression mold. The compression mold has a wave-shaped undulating surface, which corresponds to the wave shape of...

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