A surface-treated pre-embedded plate processing technology for anti-fall beams

Abstract

The invention discloses a machining process for efficient surface treatment of a beam-falling prevention embedded plate. The machining process comprises the following steps that a mounting outer thread is machined on the outer side of one end of an embedded cylinder; the other end of the embedded cylinder is welded to an embedded bar to form an embedded bar cylinder; a cylinder mounting hole used for mounting the embedded bar cylinder is machined in a fixing plate; a mounting inner thread matched with the mounting outer thread is machined on the inner wall of the cylinder mounting hole; the fixing plate and the embedded bar cylinder are subjected to chemical degreasing, water washing and drying, and rust spots and oxide scales on the surface of the fixing plate and the surface of the embedded bar cylinder are removed in a shot blasting mode; and the fixing plate and the embedded bar cylinder are subjected to surface anticorrosion treatment and then assembled together in a threaded connection mode. The machining process for efficient surface treatment of the beam-falling prevention embedded plate can be used for conveniently conducting composite anticorrosion treatment combining multicomponent alloy permeability, Dacromet and a closed layer on the beam-falling prevention embedded plate.

Description

technical field [0001] The invention relates to the technical field of an anti-corrosion treatment process for a pre-embedded plate of an anti-fall beam for a bridge, in particular to a process for processing a pre-embedded plate for an anti-fall beam with surface treatment. Background technique [0002] The embedded parts of bridges with reinforced concrete structure are prone to corrosion and damage the concrete structure of the bridge due to long-term exposure to various corrosion-causing factors such as freezing damage, chemical corrosion, steel corrosion, and alkali-aggregate reaction; especially due to humidity The effect of carbon dioxide, temperature and carbon dioxide will cause the carbonization of concrete, and the effect of corrosive media such as oxygen, sulfur dioxide and chlorine will further aggravate the corrosion of bridge embedded parts and the damage of concrete structure. Traditional anti-corrosion processes such as electro-galvanizing, electro-cadmium p...

AI Technical Summary

Problems solved by technology

This is a pre-embedded slab for anti-fall beams commonly used in bridge infrastructure. The disadvantages of the pre-embedded slabs for anti-fall beams disclosed in the above-mentioned prior art lie in the composite anti-corrosion treatment of multi-element alloy co-infiltration, dacromet and sealing layer The process is relatively difficult, because the surface material of the through hole after composite anticorrosion treatment is different from the matrix of the fixed plate, and the welding performance of the through hole surface after composite anticorrosion treatment will also change, thus affecting the fixed plate and the embedded cylinder The welding firmness; while the structure of the finished anti-fall beam pre-embedded plate including the fixed plate, pre-embedded cylinder and pre-embedded steel bars is relatively complicated, and it takes up a lot of space in the co-infiltration furnace or when passing through other drying equipment, resulting in The efficiency of the surface anticorrosion treatment of the pre-buried plate of the anti-fall beam is low