Yongji Motor upgrades the localization level of key technologies of excavators

The trial production of the first 10 cubic meters AC driven excavator supporting variable frequency speed regulation asynchronous motor in China has been successfully announced recently. Taiyuan Heavy Machinery (Group) Co., Ltd. and China CNR Group Yongji Motor Factory realized a strong alliance, breaking the passive situation of foreign technology monopoly and realizing the localization of the key technology of variable frequency speed control asynchronous motor for excavators.

At present, Taizhong Group and Yongji Motor Factory have entered a stage of comprehensive cooperation. The 20 cubic meter excavator project is in the assembly and commissioning phase, and the 4 cubic meters and 28 cubic meters projects have signed technical agreements. The two sides intend to cooperate to develop larger-sized excavators, thus creating the world's most exchanging excavators. Previously, AC-driven excavators had many new performance requirements for variable-frequency motors because of their harsh working conditions. Only foreign companies mastered this technology.

Roofing Sheet , also known as steel Roof Sheet , Profile Roof Sheet, Corrugated Steel Sheet, steel floor bearing plate, profiled sheet, galvanized steel Roof Tile , color roofing tile, color coated steel sheet, aluminium zinc Metal Roof Sheet , etc. Roof sheet is made of Galvanized Steel Sheet or Color Steel Sheet by cold bending. The products are widely used in power plants, power equipment companies, automobile exhibition halls and steel structure plants Concrete warehouse, steel structure office, airport terminal, railway station, stadium, concert hall, Grand Theater, large supermarket, logistics center, Olympic Stadium, etc. 

1) Specification of color galvanized steel sheet and aluminized galvanized steel sheet substrate

Thickness: 0.15-1.2mm;
Width: 600-1250 mm;
Length: usually coil, the length depends on the minimum order quantity of steel plant.
2) Common specifications of color galvanized steel sheet and aluminum galvanized steel sheet for buildings
Thickness: 0.42, 0.48, 0.50, 0.55, 0.60mm.
3) Coating thickness
The coating thickness of galvanized steel sheet has Z100, Z150, z275, z450 and other brands, and the roof usually adopts z275 and z450.
The coating thickness of aluminum zinc steel plate has az100, az150, az200 and other brands, and the roof usually adopts az150.

Roof Tile

Color Roof Tile,Corrugated Roof Tile,Galvanized Roof Sheet,Corrugated Steel Sheet,Metal Roof Tiles

Jinan Hengming Steel Co., Ltd , https://www.jnhengmingsteel.com