nodular cast iron

By controlling the size and distribution of graphite diameter and the spherical regularity of graphite, the correlation degree with the

Nodular cast iron obtains spherical graphite through inoculation and spheroidization. Because the graphite is spherical, it is not easy to

Furan resin self hardening sand is used for molding and core making, and alcohol based zircon coating is used to

From 2015 to 2019, the wind power market was constantly changing and experienced two rush loading peaks of wind power.

In recent years, with the development of mechanical equipment towards portability, low energy consumption and high efficiency, new requirements are

In the process of measurement, if the temperature of the reference end changes, even the temperature range is large, the

The upper limit of temperature measurement is as high as 1350 ° C. in the process of temperature measurement, the

The principle of thermocouple temperature measurement is thermoelectric effect. In the thermocouple loop, the high temperature end is called the

In order to verify the accuracy of the simulation results and prove that the simulation software can be used to

The matrix of qt400-18 is mainly ferrite. The chemical composition of qt400-18 is not specified in GB 1348-2013 ductile iron

1) The self-developed 16 channel temperature measuring device was used to successfully collect the temperature curves of 45 ° fan-shaped