石墨化退火

试验表明，SG可使第一阶段石墨化退火时间缩短到1.5小时之内；等二阶段退火时间缩短到2.5～5.5小时；

The results showed that SG inoculant could shorten the first stage graphitizing annealing time to less than 1.5h , and shorten the second stage annealing time to 2.5-5.5h .

对铸态可锻铸铁的材质、孕育处理及石墨化退火工艺进行了研究。

The components , modification and graphitizing annealing technology of ductile cast iron as-cast was researched .

若铸态组织中存在少量莱氏体，应770℃保温1h，以消除渗碳体，再进行740℃保温3h的石墨化退火处理。

As a little ledeburite in the cast structure existed , it was heated to eliminate the cementite 1 hour at 770 ℃, following the graphitizing annealing 3 hours at 740 ℃ .

复合孕育金属型可锻铸铁的退火工艺与普通孕育金属型可锻铸铁的相比，第一阶段石墨化退火时间由45min减少至25min；第二阶段石墨化退火时间由5h50min缩短至1h20min。

The annealing process of multiple inoculations metal-mould malleable cast iron is compared with common inoculation one , the first stage graphitization annealing time is decreased from 45 minutes to 25 minutes , and the second stage graphitization annealing time is shortened from 350 minutes to 80 minutes .

金属型铸造可锻铸铁的低温石墨化退火研究

Study of low temperature graphitization of permanent mold malleable cast iron

中碳钢球化退火石墨化退火在中小企业的应用

Application of Graphitic Annealing in the Middle or Small Corporation

可锻铸铁低温石墨化退火新工艺

New Process of Low Temperature Graphitization for Malleable Iron

用金属型生产可锻铸铁，在增加其含硅量条件下，可缩短第一、第二阶段石墨化退火时间。

The gravity die vas used to produced malleable iron for reducing the times of first and second stages heat treatment by increasing the silicon content .

应用故障树系统分析法研究可锻铸铁生产中铸态下产生的灰点和石墨化退火后的白脆缺陷，给出了故障树、分析过程及主要结论。

The gray spot defect of as-cast malleable iron and the shatter crack defect of graphitizing annealed malleable iron was analyzed using fault tree system . The fault tree , analysis procedure and the main conclusions were given .

通过对半固态铸铁石墨化退火工艺条件的分析及微观组织的观察，探讨半固态组织的演变机理，研究石墨化退火对半固态铸铁板力学性能的影响。

Via analyzing the annealing process condition to semisolid cast iron and the observation of microstructures , the evolution mechanism of the semisolid organization was discussed , and the effect of graphite annealing to the mechanic properties of semisolid cast iron plank was also researched .

结果表明：采用高温预温处理时，石墨核心数显著少于低温预温处理形成的核心数；石墨化退火周期仍较采用低温预温处理时长。

Results show that the number of graphite nodules formed during the high temperature preheat is less than that during the low temperature , and graphitization circle is longer .