冲压模具毕业设计外文翻译英文原文heattreatmentofdieandmouldorientedconcurrentdesign

冲压模具毕业设计外文翻译英文原文heattreatmentofdieandmouldorientedconcurrentdesign内容摘要：

treatment for die and mould,the parameters including quenching medium type,quenching temperature and tempering temperature and time,must be properly selected,and whether using surface quenching or chemical heat treatment the parameters must be rightly is difficult to determine the parameters by puter puter technology develops quickly in recent decades,the difficulty with large?scale calculation has been simulating and weighing the property,the cost and the required period after heat is not difficult to optimize the heat treatment process. Data base for heat treatment A heat treatment database is described in database is the foundation of making out heat treatment ,heat treatment database is divided into materials database and process is an inexorable trend to predict the property by materials and it is difficult to establish a property database,it is necessary to establish the database by a series of materials database includes steel grades,chemical positions,properties and home and abroad grades parallel process database includes heat treatment criterions,classes,heat preservation time and cooling on the database,heat treatment process can be created by inferring from rules. Tool and equipment for heat treatment After heat treatment process is determined,tool and equipment CAD/CAE system transfers the information about design and manufacture to the numerical control rapid tooling prototype,the reliability of tool and the clamping apparatus can be whole procedure is transferred by work,in which there is no man?made interference. 3 Key Technique Coupling of temperature,microstructure,stress and property Heat treatment procedure is a procedure of temperaturemicrostructure?stress three factors can all influence the property see heating and cooling,hot stress and transformation will e into being when microstructure temperaturemicrostructure and temperature?microstructure?and stressproperty interact on each on the interaction of the four factors has been greatly developed,but the universal mathematic model has not been models fit the test nicely,but they cannot be put into with most of models are solved in analytic solution,and numerical method is employed so that the inaccuracy of calculation exists. Even so,paring experience method with qualitative analysis,heat treatment simulation by puter makes great progress. Establishment and integration of models The development procedure for die and mould involves design,manufacture,heat treatment,assembly,maintenance and so should have own database and are in series with each other by the entity?relation establishing and employing dynamic inference mechanism ,the aim of optimizing design can be relation between product model and other models was product model will change in case the cell model fact,it belongs to the relation of data with die and heat treatment model is integrated into the system,it is no more an isolated unit but a member which is close to other models in the searching,calculating and reasoning from the heat treatment database,procedure for。