Manufacturing method of brake tube of air brake system

Abstract

The invention belongs to the technical field of mechanical parts manufacturing, and particularly relates to a manufacturing method of a brake tube of an air brake system. The manufacturing method of the brake tube of the air brake system comprises the following steps of smelting molten steel, casting into die casting billet, electroslag remelting, cogging hot rolling into square billet, forging into round ingots, hot extrusion, lubrication cold rolling, annealing treatment, surface treatment, inspection and entering a storage; in the process of smelting molten steel, the molten steel is produced when the composition of the molten steel meets the following requirements, wherein the molten steel is prepared from the following components in percentage by weight: 0.02%-0.03% of C, 0.018%-0.028% of P, 17.2%-17.4% of Cr, 9.2%-9.5% of Ni, 0.001%-0.002% of S, 0.21%-0.28% of Ti, 0.05%-0.06% of N, 0.01%-0.15% of Cu, the balance of Fe and unavoidable impurities. According to the manufacturing method of the brake tube of the air brake system, through the special design of material ingredients and optimization of partial parameters and methods of hot extrusion, lubrication cold rolling, annealing treatment, surface treatment and the other processes, so that the brake tube of the air brake system has better corrosion resistance and surface quality.

Description

technical field [0001] The invention belongs to the technical field of manufacturing mechanical parts, and in particular relates to a method for manufacturing a brake pipe of an air brake system. Background technique [0002] Air brakes, also known as mechanical brakes or friction brakes, are commonly used in airplanes, trains and urban rail transit vehicles. Commonly used air brake methods for urban rail transit vehicles include brake shoe brakes and disc brakes. The air brake system consists of an air supply system, a foundation brake device (commonly a brake shoe brake system and a disc brake device), an anti-skid device and a brake control unit. The air supply system is mainly composed of air compressor, main air cylinder, automatic brake valve, individual brake valve, distribution valve and action valve and other main components. The air compressor fills the main air cylinder with compressed air for braking. The automatic brake valve is the control device of the brak...

AI Technical Summary

Problems solved by technology

The manufacturing method of conventional stainless steel pipe, such as the production method of a kind of stainless steel seamless steel pipe disclosed by the Chinese invention patent of CN106391749A with the publication number of CN106391749A and the preparation of a kind of stainless steel seamless pipe disclosed by the Chinese invention patent of CN107096804A method, due to the existence of oxide particles, water stains, and abrasive debris in the process of heat treatment, pickling, and shot blasting, such high requirements cannot be met