1.Maintenance and management status of metallurgical machinery and equipment

On the one hand,the polarization of management is very serious.Management personnel did not pay attention to the maintenance of metallurgical machinery and equipment,did not really grasp the characteristics of the equipment,the maintenance of the established program is not reasonable,so that the program divorced from the actual production.Although the front-line staff can master the characteristics of the equipment proficiently,due to limited capacity,the maintenance plan is not complete.As a result,there is no scientific,reasonable and practical working method for metallurgical machinery and equipment maintenance,which hinders the development of work and affects the production efficiency of enterprises.On the other hand,there is no reasonable management system.At present,there are many problems in the maintenance of metallurgical machinery and equipment.The first one is that the managers do not have an adequate understanding of the performance and characteristics of the equipment and cannot ensure that the new production requirements of the equipment are met.Frequent equipment losses and failures occur,resulting in increased maintenance workload and production cost[1].At the same time,the installation technology of relevant personnel is not professional enough,which affects the installation efficiency,and there will be potential safety hazards.In addition,there is no maintenance method consistent with the actual production of the equipment,so it is difficult to find out the problems of the equipment through daily maintenance.Under general production,targeted maintenance is carried out when there is a major fault of the equipment.However,due to too much delay,it is not only more difficult to maintain,but also more costly to maintain.

2.Maintenance strategies for metallurgical machinery and equipment

2.1 Preventive maintenance

In essence,preventive maintenance means that relevant staff need to carefully check the equipment in the practice of work,and timely find out the problems existing in the operation of the equipment and take appropriate maintenance measures.To be specific,regular or irregular inspection of mechanical equipment is required in the daily work of the staff.If the preventive work in metallurgical equipment maintenance can be carried out,it will guarantee the normal operation and performance of the equipment.

2.2 Post-Maintenance

After maintenance means that appropriate maintenance measures should be taken in case of serious equipment failure.Generally speaking,this kind of maintenance has higher technical requirements.In order to avoid more serious problems in the future operation of metallurgical machinery,it is necessary to accurately find out the specific location of the fault,analyze the cause of the problem on the basis of combining with the corresponding fault type,and then take appropriate maintenance measures[2].For example,most heavy steel rolling machinery and equipment are under extremely high load,so problems such as structural deformation and oil film damage are easy to occur in the operation practice.Technicians are required to analyze the actual operation status of the equipment and select appropriate maintenance measures based on the analysis results.

2.3 Predictive maintenance

During the maintenance of metallurgical machinery and equipment,the hysteresis is relatively great,but the preventive maintenance has great blindness.Such problems will make it difficult to achieve efficient and safe operation of mechanical equipment,and equipment damage speed will also be accelerated.When carrying out predictive maintenance for the equipment,it is necessary to comprehensively detect the problems existing in the equipment.When there is a fault,it can give an automatic alarm to help the staff to find out the fault in time and monitor the specific problem.The application of this method can help the staff to find out the root cause of the problem quickly and accurately,which is conducive to the improvement of equipment maintenance quality and efficiency.

3.Metallurgical machinery and equipment management measures

3.1 Scientific and reasonable installation management

During the daily management of metallurgical enterprises,the installation of mechanical equipment system is a crucial link,which will affect the normal and reasonable operation,and also determine whether the equipment system meets the requirements of quality and type and the cost of management.In addition,it will affect the service life and maintenance cycle of metallurgical equipment.Therefore,in the installation of metallurgical machinery and equipment,must be closely around the principle of more,faster,better,less.Metallurgical machinery equipment is given priority to with heavy equipment,has more complex production work at the same time and heavy task,must therefore be fully mechanized production process,and must be highlighted in strategy and tactics and construction technology advanced,and also to ensure the scientific nature of construction organization design,so in order to ensure that the installation of the equipment configuration can be consistent with the production standards and design requirements.

3.2 Strengthen the lubrication management of equipment

Metallurgical industry production has unique characteristics,the plant machinery and equipment in the environment for a long time under extremely high temperature,faced with very harsh conditions.In order to prolong the service time of mechanical equipment,lubrication management must be strictly implemented.This link can play a significant protective role in preventing friction and reducing wear among various parts of mechanical equipment,and can minimize the faults caused by friction[3].Therefore,based on the main structure of metallurgical equipment,friction characteristics between parts,etc.,through a comprehensive and in-depth analysis,a reasonable choice of appropriate lubrication materials and methods.

3.3 Scientific establishment of maintenance management system

In the use of the equipment system,the scientific and reasonable operation process must be made in advance,and the responsibility system for the maintenance of metallurgical equipment system shall be established,the safety protection system shall be installed,and the professional education and training of relevant staff shall be implemented.During the application of the equipment system,the relevant operators should maintain and care the equipment used every day.Once there is a potential safety hazard,they should immediately report to the superior and inform the professional technicians to check the potential safety hazard carefully as soon as possible.At the same time,the equipment maintenance and management system should be further improved in metallurgical enterprises,and the staff should take the initiative to cherish all kinds of equipment and carry out operations closely around the work rules,so as to avoid the occurrence of irregular operations.On the basis of the lubrication and anticorrosion treatment,the maintenance information file should be established and recorded three times each time.Meanwhile,the number of records should be increased appropriately according to the actual situation.In addition,it is necessary to have an in-depth understanding of the responsibilities of the three-level site inspection work,ensure that the site inspection personnel are in place,so as to timely discover the risks and hidden dangers existing in the equipment system within the site inspection scope,and take appropriate maintenance and repair measures quickly.