Page 12 - 数值模拟驱动的高温合金热加工技术

metallurgy, energy, transportation, and chemical engineering (such as generator

rotors and reactor pressure vessels for nuclear power generation equipment),
requiring high mechanical properties, all of which are obtained through heat

treatment. The heat treatment process, as a post heat processing step, is a key
link in ensuring the internal quality of the product and meeting performance
requirements. In order to ensure product quality and performance requirements,

and avoid the generation of large residual stresses, conservative methods are
commonly used in heat treatment processes, which are time-consuming. However,
prolonged heating and insulation can greatly increase energy consumption and

delay the time for products to enter the market. Therefore, how to shorten the heat
treatment time while ensuring quality is an important development direction for
improving the heat treatment process.

The production of large forgings has the characteristics of single piece and
small batch, with relatively large initial investment. Once the product is scrapped,

it will cause significant losses, which puts higher demands on the rationality of
process formulation. When producing new products or developing new processes,
relying solely on experience may result in unsatisfactory performance. But if

a large number of experimental studies are conducted, it will result in a waste
of manpower and financial resources; At the same time, the large size of large

forgings makes it impossible to conduct 1∶1 physical research, and physical
experiments usually have certain limitations, which cannot fully understand the
entire process. With the continuous improvement of mathematical models and

calculation methods in the heat treatment process, computer simulation of the
heat treatment process has been increasingly valued by people to guide actual
production and achieve good benefits.

This book is divided into seven chapters. Chapter 1 provides an overview
of high-temperature alloys and hot working technology, including the material
characteristics and industrial application fields of high-temperature alloys, the