Processing technology and manufacturing method of weathering steel

The invention relates to a welding method of Q500qDNH weathering steel for Bridges with yield strength of 500MPa

Introduction: The technology provides a welding method of bridge special weathering steel Q500qDNH with yield strength of 500MPa, including: first, grinding and cleaning both sides of the groove, removing the oxide sheet and iron filings; Second, preheat the steel plate at the joint; Third, the use of flux-cored wire argon-rich gas body welding process for bottom welding; Fourthly, multi-layer and multi-pass continuous welding is carried out by the Aron-rich shielded welding process with flux-cored wire, and the temperature between layers is controlled. Five, carbon arc gas gouging welding root; Sixth, the second side multi-layer and multi-pass continuous welding is carried out by the Aron-rich shielded welding process of flux-cored wire. Seventh, the use of thermal insulation cotton covering the weld for thermal insulation slow cooling. The technology adopts multi-layer and multi-pass welding under the protection of argon rich gas body, and carries on the air gouging welding root treatment on the first side of the welding root during the second side welding, so as to ensure the strength of the welding.

The invention relates to a welding process method of Q500qENH weathering steel Angle joint in high cold area

About: The technology provides a welding process method of Q500qENH weather-resistant steel Angle joint in high cold area. The process method can overcome the adverse effects of the high cold environment on the welding performance, improve the low temperature toughness, crack resistance and weather resistance of the welded joint, so as to obtain a welded joint with good mechanical properties and weather resistance. It achieves matching welding of long-span, heavy-duty, high-strength, high-toughness and weather-resistant bridge steel in plateau and cold regions without pre-welding and post-welding heat treatment, which improves production efficiency and reduces energy consumption.

The invention relates to a process method for single-side welding and double-side forming of Q500qENH weathering steel in high-cold area

About: The technology provides a process method for single-side welding and double-side forming of Q500qENH weather-resistant steel in the high cold area. The process method can overcome the adverse effects of the high cold environment on the welding performance, improve the low temperature toughness, crack resistance and weather resistance of the welded joint, so as to obtain a welded joint with good mechanical properties and weather resistance. It achieves matching welding of long-span, heavy-duty, high-strength, high-toughness and weather-resistant bridge steel in plateau and cold regions without pre-welding and post-welding heat treatment, which improves production efficiency and reduces energy consumption.

The utility model relates to a high pressure sealing structure of the joint part of a weather-resistant steel tower

Introduction: The technology provides a high pressure sealing structure for the joint part of a weather-resistant steel tower, including a disk-like groove and an anti-rust sealant. The disk-like groove is arranged on the end face of the branch plate at the connection point between the branch plate and the main board. The disk-like groove is provided with an inlet and an outlet, and the inlet and outlet are installed with a removable sealing head. The technology is provided with a disk-like groove at the bonding surface, and the anti-rust sealant is installed in the disk-like groove, which can further achieve the sealing effect of the bonding surface, reduce the possibility of corrosion of the contact surface, and reduce the contact surface, but also easy to increase the effective contact surface, so that the fit degree is better, set the inlet and outlet, easy to add anti-rust sealant, easy to add.

5 The utility model relates to a welding solder composition testing device for weathering steel tower

About: The technology provides a steel tower weathering steel welding solder composition detection device, including a UAV and a metal material spectrometer, the metal material spectrometer is connected under the metal material spectrometer through the telescopic cylinder of the spectrometer and the probe of the metal material spectrometer is facing forward, and the sander is installed under the metal material spectrometer. The body of the sander is inclined and fixed on the end of the cylinder rod of the sanding telescopic cylinder, and the plane grinding wheel is inclined down to the front, and the cylinder seat of the sanding telescopic cylinder is fixed and connected on the cylinder seat of the telescopic cylinder of the spectrometer. The technology can quickly realize the remote detection of the tower solder composition, saving time and effort, and the operation safety is higher, and can be measured for the solder composition of different height positions, the telescopic cylinder is used, the cylinder has an elastic buffer effect during the telescopic process, when the probe touches the tower Angle steel, it can play a role in protecting the probe. It can improve the precision of solder composition detection.

Weathering steel screen

Weathering steel grill