Research On Heat Treatment Temperature Measure & Control System For Forging Steel Crankshaft On A Large Scale

The heat treatment as the ealier procedure in the manufacturing crafts process of forging steel crankshaft, the quality of which play a key decision role in mechanical performance and latter processing on crankshaftTemperature as the important parameter in the heat treatment crafts, whether which is controlled accurately or not concerns the heat treatment performance of the crankshaft and production cost directly .so, It is important for research of heat treatment temperature control of the crankshaft.According to existing heat treatment temperature control device, this paper analyses heat treatment function demand of temperature control on forging steel crankshaft, proposes a system solution based on the front & back control panel structure with RS485 bus , and has finished the hardware design and software design of the control system ,which have been debugged both. Research work includes mainly:The hardware platform with advanced microprocessor MSP430F169 as master controller for heat treatment temperature control for crankshaft is designed based on module thought, including data acquiring unit, in-out put and communication with front panel etc peripheral module.Aiming at heavy lag and variable characteristic on temperature parameter in heat treatment, the paper adopts PID arithmetic and use fuzzy mathematics to regulate itself. Master control program .interrupt service program and communication program between front & back control panel are written according to the controlling algorithm with the module thought designed.Aiming at strong interference of the industrial scene, the designed project of dependability is provided from two respects of the hardware and software.Theory analysis and experiment both demonstrate that designed system enhances real-time character of control system and control precision effectively, improves the automatic degree of the heat treatment production line of the crankshaft greatly and have higher practical value.