Crescent Foundry Melting Engineer Interview Questions and Answers

Furnace lining procedure involves selecting appropriate refractory materials and installing them in the furnace.

• Select appropriate refractory materials based on the type of furnace and operating conditions

• Prepare the surface of the furnace by cleaning and removing any old lining

• Install the refractory materials using various techniques such as casting, gunning, or ramming

• Allow the lining to dry and cure before firing up...read more

Charge mix is made by combining various raw materials in specific proportions to achieve desired chemical composition.

• Determine the required chemical composition of the final product

• Select appropriate raw materials based on their chemical properties

• Calculate the required quantities of each raw material based on their chemical composition and desired final product composition

• Mix the raw materials thoroughly to ensure ho...read more

The method of controlling an element depends on the specific element and the context in which it is increasing.

• Identify the element and its source

• Determine the potential consequences of the increase

• Implement appropriate measures to reduce or eliminate the source of the increase

• Consider using technology or equipment to control the element

• Monitor the situation to ensure the element remains at a safe level

Graphite takes spherical shape in sg iron due to the presence of magnesium.

• Graphite in sg iron forms as nodules or spheres due to the addition of magnesium.

• Magnesium reacts with sulfur in the molten iron to form magnesium sulfide, which promotes the formation of spherical graphite.

• The spherical shape of graphite in sg iron improves the material's mechanical properties, such as strength and ductility.