Lian Steel construction machinery with steel help "the world's first crane"

A few days ago, as our country independently developed

The world's largest, most powerful lifting capacity

The first 11 axle crane

"World's first crane" Xugong XCA4000

A show of great power and important instruments

Steel bone strong nail casting machine

The steel plate used in the main boom of the crane

It is Lianyuan Steel construction machinery steel - LG960QT

Lian Steel construction machinery steel has formed a yield strength of 460~1400MPa series products, thickness specifications covering 2.0~25.4mm, with high strength, good formability, excellent surface quality, high thickness accuracy and good weldability.
Widely used in machinery, coal, transportation and mining and all kinds of engineering construction and other departments required equipment, such as: drilling rig, electric furnace, electric wheel dump truck, excavator, loader, bulldozer, aerial work truck, all kinds of lifting equipment and coal mine hydraulic support and other mechanical equipment.
In recent years, it has won 2 government research support projects, formulated 2 national standards, repeatedly won the National Science and Technology Progress Award, Hunan Province Science and Technology Progress Award, metallurgical science and technology award, and authorized 12 patents. And won the "China Innovation Method Competition National Finals second prize", "Metallurgical product physical quality Award", "Metallurgical product physical quality Gold Cup Award", "Metallurgical industry quality excellent products", "Hunan Famous brand products" and other honorary titles.

Performance uniformity
Tempered steel and tempered plate have more stable mechanical properties, and the whole roll performance fluctuation is less than 30MPa.

Impact toughness
Tempered plate and tempered plate have very low tough-brittle transition temperature, and still have good impact toughness at -60℃.

Bending property
Ultra-high strength steel has good forming performance, and 960MPa high strength steel can meet the bending performance of d=6a.

weldability
With good weldable performance, LG1100QT ≤ 10mm does not need to be preheated before welding.

Surface quality
Equipped with acid-free pickling production line and pretreatment process, surface treatment can be carried out according to user needs. The treated surface has no hardening, no dust, and a good finish.

Plate cut
The unevenness of the tempered board and the tempered board can meet any direction ≤5mm/m; Low internal stress of the steel plate can reduce the plate shape problems caused by cutting:

(1) After cutting the steel plate with a length of less than 5000mm, the sickle bend is less than 0.1% of the total length

(2) The sickle bend after cutting the steel plate with a length of 5000-8000mm is less than 5mm

(3) Sickle bending ≤8mm after cutting steel plate with length within 8000-10000mm