In the production process of locomotive hook tail frame forging, machining allowance and precision control are the most important links. Reasonable processing allowance allocation can improve material utilization and production efficiency, and precision control is the key to ensure the quality of forging. This paper will discuss the related problems of machining allowance and precision control of locomotive hook tail-frame forgings.
Machining allowance refers to the extra material reserved in the forging process in order to remove forging defects, ensure the dimensional accuracy of the forging and adjust the errors in the forging process. The reasonable distribution of machining allowance is very important for locomotive hook tail frame forging.
Allowance allocation: According to the structure, size and technical requirements of the forging, reasonable allocation of processing allowance. For parts with complex shapes or high precision requirements, the margin should be appropriately increased to ensure processing accuracy.
Margin influencing factors: The processing margin is affected by a variety of factors, including material characteristics, forging process, mold design, equipment capacity, etc. When determining the processing allowance, these factors should be fully considered to ensure the rationality and applicability of the allowance.
Margin optimization: In order to improve material utilization and reduce production costs, the processing margin should be optimized. Through the process test and production practice, constantly adjust and improve the allowance allocation scheme to achieve the best processing effect.
Precision control is the key measure to ensure the quality of locomotive hook tail frame forging, which mainly includes the following aspects:
Die accuracy: The accuracy of the die directly affects the shape and size of the forging. To ensure that the design and manufacturing accuracy of the mold meets the requirements, regular testing and maintenance, timely repair and replacement of damaged molds.
Processing equipment: The selection of high-precision, high-stability processing equipment, such as CNC machine tools, processing centers, etc., to ensure that the equipment is in good working condition, regular equipment maintenance and maintenance.
Processing technology: Develop a reasonable processing technology, including processing sequence, cutting parameters, etc., to reduce the error in the processing process. For different materials and workpiece structure, choose the appropriate tool and cutting fluid to improve the machining accuracy.
Detection and measurement: Adopt high-precision detection tools and measurement methods to detect the size, shape, position and other parameters of the forging. By comparing the actual measured value with the requirements of the design drawing, the error is found and corrected in time to ensure that the forging accuracy meets the standard requirements.
Quality traceability and continuous improvement: Establish a sound quality traceability system, record and monitor the key links in the production process. Identify potential problems through data analysis and take improvement measures to continuously improve the accuracy level of forgings. At the same time, strengthen staff training and technical exchanges, improve the skill level of operators and work responsibility.
The control of machining allowance and precision is very important in the forging process of locomotive hook tail frame. Reasonable processing allowance allocation can improve material utilization and production efficiency, and precision control is the key link to ensure the quality of forging. Through the optimization of processing allowance and the implementation of control measures, the quality and reliability of locomotive hook tail frame forging can be improved, and the production cost and scrap rate can be reduced. At the same time, strengthen technological innovation and quality management system construction, and constantly improve the core competitiveness of enterprises to meet market demand and customer expectations.
