Device for preventing high temperature caused by welding metal embedded part from burning out concrete base layer and method thereof

Abstract

The invention discloses a device for preventing high temperature caused by welding metal embedded parts from burning out concrete base layers and a method thereof. In the device, at least one metal pipe is welded on an embedded plate; one end of the metal pipe is adopted as a water intake and the other end is adopted as a water outtake; the metal pipe appears as bent or curved form and is positioned at the lower end of a part to be welded on the embedded plate; the metal pipe is hollow and provided with diameter between 15 mm and 25 mm; and both water and cement mortar can be poured into the metal pipe. When in welding on the embedded plate, the method adopts the proposal of leading cooling water to flow into the lower end of the part to be welded on the embedded plate through the metal pipe and then flow out of the metal pipe after absorbing heat generated by welding; and the method utilizes water stream to reduce the temperature of the contact surface between the embedded part and the concrete base layer. The invention can effectively control the temperature of the contact surface between the embedded part and the concrete base layer so as to prevent the high temperature caused by the welding from burning out concrete base layer and ensure the embedding quality; and cost is low, the operation is simple and practicality is high.

Description

technical field [0001] The invention relates to a device and a method for avoiding the burning of a concrete base layer by high temperature welding of metal embedded parts. Avoid concrete burnout caused by high temperature welding of metal embedded parts. Background technique [0002] Metal embedded parts are often used at the joints between metal components and concrete components. They are generally composed of embedded slabs and pre-embedded reinforcement. The pre-embedded reinforcement anchors the embedded slab to the concrete base, and the embedded slab is used for the upper part to be installed. Structural connection, most of the connection methods are welding. [0003] The high temperature generated during the metal welding process exceeds 1000°C. The welded part is usually located on the surface of the metal embedded plate. Through heat conduction, the temperature of the concrete base surface near the welded part exceeds 900°C. If the welding time lasts for a long t...

AI Technical Summary

Problems solved by technology

This method greatly reduces the progress of the project, and it is difficult to implement this method under the current tight construction schedule; 2. Water near the welding part, and use the evaporation of water to cool the pre-embedded board

This method may allow moisture to mix into the welded part, making the weld brittle and reducing the quality of the weld

And because watering can only be poured on the upper surface of the embedded slab, it cannot directly block the transfer of welding heat to the concrete base, so the cooling effect of watering on the joint between the embedded slab and the concrete base is limited; 3. Weld the embedded slab first pouring lower concrete

Images