When meeting with Huang Mingsheng, the general manager of Shuguang Holding Group Co., Ltd., Zhang Xiaolian said that the investment of Shuguang Group in the Pingfang District of Harbin City has played a leading role in attracting more enterprises to participate in the implementation of the “South Extension†strategy in Harbin. He hoped that the Dawning Group could continue to expand the investment in Kazakhstan as a key area for strategic development. The relevant departments of the city and district will continue to do a good job in supporting the construction of the project and promote their healthy development.
When meeting with Zhao Yongde, vice president of Zhejiang Jianli Group, Zhang Xiaolian said that the city and district governments attach great importance to the development of Jianli Group in Kazakhstan. The city will further take measures to provide investors with better production, living environment and more detailed services.
When meeting with some members of the Zhejiang Enterprise Confederation of Heilongjiang Province headed by Executive Vice President and Secretary General Chen Kejun, Zhang Xiaolian said that Zheshang played an important role in Harbin reform and development and economic construction. He hopes that Zheshang, which operates in Kazakhstan, will be able to attract more Zhejiang enterprises to invest and develop. The local government will further improve the mechanism of docking with foreign investors such as Zheshang, take the initiative to provide services for foreign investment, and work together to develop the regional economy.
According to reports, Shuguang Group is a national-level construction contractor special contracting qualification enterprise. It is planned to invest 1.2 billion yuan in the development of Hanan New Town in the Pingfang District. Jianli Group is the largest production base of bearing steel tubes in China. At present, it plans to build Harbin Jianli Precision Machinery Manufacturing Co., Ltd., which is invested and constructed in Bayan County, into a precision bearing roller production base in China. It mainly builds O-class and 1-stage precision bearing roller production bases, China Bearing Roller R&D Center and China Bearing Roller Testing Center. The project has been included in the “12th Five-Year†China Bearing Development Planning Key Construction Project by the National Bearing Association. The Zhejiang Enterprise Confederation of Heilongjiang Province is a province-wide organization that Zhejiang enterprises that are produced in Heilongjiang Province voluntarily participate in, and mainly promotes economic and trade cooperation and exchanges between Zhejiang and Black.
Plate rolling is a process of continuous three-point bending of sheet metal using a plate rolling machine. The equipment puts the sheet material between the upper and lower work rolls when rolling. The upper roller is raised and lowered vertically, and the two lower rollers rotate and move horizontally relative to the axis of the upper roller. When the upper roll descends, the plate is plastically deformed and bent between the upper and lower work rolls. The continuous rotation of the bottom roller drives the steel plate to advance and retreat through the friction between the plate and the roller to complete the coiling.
1. Pre-bending. When the plate is rolled, there is a length at both ends of the plate that does not bend because it does not touch the upper roller. It is called the remaining straight edge. In the process, the minimum force arm at which the plate starts to bend is called the theoretical remaining straight edge. The bending form (symmetrical bending, asymmetrical bending) is related.
2. Centering. The purpose of centering is to make the generatrix of the workpiece parallel to the roller axis to prevent skew.
3. Roll round. Rolling is the main process of product forming, which is divided into two types: one-time feed and multiple feeds. Multiple feeds are commonly used for rolling thick plates. The number of feeds depends on the technological constraints (such as the maximum allowable deformation during cold rolling) and equipment constraints (such as non-slip conditions and power conditions). When the rebound of the cold coil is significant, a certain amount of overcoiling must be added.
4. Straightening round. The purpose of rounding is to make the curvature of the entire circle as uniform as possible to ensure product quality. The general rounding process is divided into three steps:
(1) Load: According to experience or calculation, adjust the work roll to the position of the required maximum correction curvature.
(2) Rounding: Roll the roller 1 to 2 turns under the corrected curvature to make the entire curling rate uniform.
(3) Unloading: gradually unload the load, so that the workpiece is rolled several times under the gradually reduced correction load.
Rolling Machine,Three-Roller Bending Machine,Four-Roller Bending Machine,Roll Forming Machine
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