Development Trend of Elevator Guide Rail Industry

Development Trend of Elevator Guide Rail Industry

The elevator industry is one of the industries closely linked to the development of the national economy. With the rapid development of the national economy and the advancement of urbanization, the elevator industry has also flourished. The solid steel guide rail is an indispensable reference component in the elevator system. The hot rolled elevator guide rail(T-type) profile steel (elevator guide blank) is important raw material for the solid (T-type) guide rail. In recent years, it has grown with the development of the elevator industry.

The elevator guide rail is two or more columns of vertical or inclined rigid rails installed in the elevator shaft or between the floors to ensure the vertical movement of the car and the counterweight along the vertical and vertical directions, ensuring that the escalators and moving walkways are making inclined or horizontal movement along them. The elevator guide rail provides guidance for counterweights or steps of elevator cars. The guide rail not only controls the running track of the elevator car and the counterweight, but also is a strong support for the emergency stop when the car is accidentally overspeeded. Therefore, the elevator guide rail is an important component related to elevator safety and operation quality. The elevator guide blank, also known as the T-shaped guide blank, belongs to the hot-rolled profiled steel product. The elevator guide blank is generally made of Q235B grade steel. The verticality and straightness of the elevator guide blank are the focus of quality control. If the verticality and flatness deviation exceed the range, it will not only increase the difficulty of machining, but also operate the elevator. The processing technology of elevator guide blanks mainly includes blanks purchasing, billet inspection, material cutting, heating, rolling, shearing, cooling, inspection, straightening, cold cutting, inspection, packing, storage.

With the steady and sustained development of China’s economy, especially the acceleration of urbanization construction, it has provided a good opportunity for the development of the elevator industry. With the development of large-scale and high-rise urban buildings, the elevator market has developed rapidly. In recent years, the demand for elevators in China has increased by more than 20% per year, driving the market for elevator guide rails to expand rapidly. The rapid development of the elevator and elevator rail market has created a huge demand for elevator guide blanks.

The elevator guide blank product belongs to the profiled steel, and the product has certain technical content in the production process. Therefore, to ensure that the product quality meets the specified requirements, the following key production technologies need to be mastered.

1. The shape of the blank of the elevator guide blank is determined by the hole design. Therefore, the quality of the hole design determines the quality of the shape of the elevator guide blank, and the hole design is the most critical production technology in the production of elevator guide blanks.

2. The quality of the elevator guide blanks roll and the processing quality of the straightening rolls affect the strip size and quality of the elevator guide blanks.

3. Uniform heating of the billet should be ensured, and the opening and rolling temperature during rolling should be also ensured. Otherwise, it will not only affect the production rhythm, but also cause the phenomenon of broken rolls due to the low temperature of the steel.

4. Due to the wear of the hole type during the production process, the strip size of the product will change accordingly. When the wear is at a certain time, the strip size will deviate from the tolerance requirement. At this time, the mill needs to be adjusted.

5. Elevator guide blank products have high requirements on verticality and flatness. However, the verticality and flatness of hot-rolled elevator guide blank products before straightening are generally out of tolerance, so the adjustment of straightening machine is also a key position.

6. The guide device is the accessory that guides the product into and out of the roll, which is directly related to whether the product can smoothly enter and exit the hole type.