Steel cap of stick type porcelain insulator for contact network of electric railway and processing method of steel cap

Abstract

The invention discloses a method for processing a steel cap of a stick type porcelain insulator for a contact network of an electric railway. The method comprises the following steps of: 1) feeding: cutting Q235A high-quality carbon steel bar into cylindrical blank materials with two level end surfaces; 2) heating: heating the blank materials to reach 1000 to 1100 DEG C; 3) upsetting: upsetting the heated blank materials; 4) die forging: carrying out die forging to the processed blank materials through a horizontal forging machine, so as to obtain formed blanks: and 5) mechanical processing: mechanically processing the formed blanks; 6) thermal ironing zinc: thermally ironing zinc of more than 80 microns in thickness on the surface. According to the method, the conventional metal casting steel cap of the insulator is replaced by the metal die forging steel cap, so that the safety and reliability of the contact network are improved, the national policies on energy conservation and emission reduction and development of green traffic are met, and the magnaflux inspection in casting technology is reduced in the aspect of production procedure, so that the cost of products can be effectively reduced. The invention also discloses a steel cap of the stick type porcelain insulator for the contact network of the electric railway.

Description

technical field [0001] The invention relates to a rod-type porcelain insulator steel cap for an electrified railway catenary, in particular to a steel cap and a processing method thereof. Background technique [0002] Rod type porcelain insulator steel caps for electrified railway catenary are divided into two types: upper steel cap and lower steel cap. Single ear hardware. They are widely used in electrified railways, high-speed railways, subways and other modern railways to connect the wrist arm and fix them. [0003] Due to the difficulty of production and processing, the insulator steel caps currently produced are all cast and then machined. Due to the defects of the casting process, the products have common defects such as trachoma, sticky sand, segregation, porosity, pores, shrinkage cavities, slag inclusions, scarring, and sand expansion, which makes the catenary with cast steel cap insulators have certain safety hazards. Accidents affecting train operation due t...

AI Technical Summary

Problems solved by technology

Due to the defects of the casting process, the products have common defects such as trachoma, sticky sand, segregation, porosity, pores, shrinkage cavities, slag inclusions, scarring, and sand expansion, which makes the catenary with cast steel cap insulators have certain safety hazards. Accidents affecting train operation due to cracking of insulator steel caps occurred on the operating line from time to time

In addition, the foundry industry has high energy consumption, serious environmental pollution, harsh operating environment, and low production efficiency, which do not comply with the energy-saving and emission-reduction policies formulated by the state.

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