Processing technique for noise-reducing steel pipe

Abstract

The invention relates to a processing technique for a noise-reducing steel pipe. The processing technique comprises the following steps: (1) inserting a tubular mould into a seamless steel pipe and causing a gap between the seamless steel pipe and the mould to be 2-3mm; (2) filling the gap in the step (1) with a mixture of aluminum powder and foaming agent; (3) heating the steel pipe to be at 680 DEG C, keeping for 2 minutes, drawing out the mould and immediately cooling; (4) blowing down waste residue in the pipeline. The mould is made of a thermal shrinkage material and contracts under a high-temperature state; dolomite dust is selected as the foaming agent; the processing technique for the noise-reducing steel pipe has the beneficial effects that the sound wave energy in the pipe is absorbed, the processing technique is simple, the production cost is low, the sound-absorbing and noise-reducing effect is good, and the processing technique is easily popularized.

Description

technical field [0001] The invention relates to the technical field of noise-reducing pipe material processing, in particular to a processing technology of noise-reducing steel pipes. Background technique [0002] With the rapid development of the world economy, the number of cars in the world is also increasing rapidly. Nowadays, people cannot live without cars. However, cars will also cause certain harm to people. Noise is one of the forms of harm. The noise of the car is very loud, which will affect people's normal life and rest. The most important thing to reduce the noise of the car is the muffler and the exhaust pipe. The material of the exhaust pipe currently used is single, and there is no sound absorption in the pipe. Solve the above technical defects. Contents of the invention [0003] The invention provides a processing technology of a noise reduction steel pipe. [0004] The technical scheme that the present invention proposes for above-mentioned technical de...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of the world economy, the number of cars in the world is also increasing rapidly. Today, people cannot live without cars. However, cars will also cause certain harm to people. Noise is one of the forms of harm. Car noise is very loud, which will affect people's normal life and rest. The most important thing for car noise reduction is the muffler and exhaust pipe. At present, the material of the exhaust pipe is single, and there is no sound absorption in the pipe. Solve the above technical deficiencies