The bucket wheel stacker and reclaimer is prone to wear during operation. The traditional solution of the enterprise is to repair welding or brush plating after machining, but both have certain drawbacks: the thermal stress caused by the high temperature of repair welding cannot be completely eliminated, and it is easy to Cause material damage, resulting in bending or breaking of parts; while brush plating is limited by the thickness of the coating, which is easy to peel off, and the above two methods are repairing metal with metal, which cannot change the "hard-to-hard" matching relationship. Under the combined effect, it will still cause re-wear. In contemporary Western countries, the repair method of polymer composite materials is mostly used to solve the above problems, and the American 1stline technology is more widely used. It has super adhesion, excellent compressive strength and other comprehensive properties. Machined. It is not affected by the thermal stress of repair welding, and the repair thickness is not limited. At the same time, the metal material of the product does not have the concessional property, which can absorb the shock and vibration of the equipment, avoid the possibility of re-wear, and greatly prolong the service life of the equipment parts. Businesses save a lot of downtime. At present, the traditional method is gradually replaced in the maintenance of the failure of the bucket wheel stacker and reclaimer in China.
My country's development
The development of domestic bucket wheel stacker and reclaimer has basically gone through three stages. In the 1960s and 1970s, small bucket wheel stackers and reclaimers were designed in China. Typical models are 3025, 8030, etc., the reclaiming output is 300t/h, 800t/h, and the turning radius is 25m and 30m respectively. The 1980s and 1990s were the second stage of the development of bucket wheel stackers and reclaimers. Large-scale bucket wheel stackers and reclaimers have been gradually adopted in newly constructed bulk material yards such as steel mills and power plants for the stacking and transfer of bulk materials. The output reaches 2000t/h, and the turning radius reaches 40m. Restricted by domestic conditions at the time, the construction of these yard conveying equipment was mostly co-manufactured or imported as a whole, and even the entire bulk material conveying system was imported from abroad. After 2000, the domestic bucket wheel stacker and reclaimer has developed to a new stage. So far, domestic manufacturers have the design and manufacturing capabilities of 300~6000t/h production capacity and 25~60m radius of gyration bucket wheel stacker-reclaimer series products. At this stage, foreign manufacturers still occupy a certain share, but domestic manufacturers have mastered considerable technology and production capacity, and occupy the mainstream position in the domestic market by virtue of service and price advantages, and gradually enter the international market.
