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Welding Repair of Castings
Principle 1. Usually refers to castings that do not meet the acceptance technical conditions or order agreement, have casting defects but can be repaired. 2. The area and number of castings allowed for welding repair are specified. The defect type is usually specified in...Read more -
Design of Gating System at Foundry
The gating system is the channel in a sand mold that guides molten metal into the mold cavity. The success of the casting process depends on the properties of the metal, the characteristics of the mold, and the structure of the gating system. A well-designed gating syste...Read more -
Incomplete Annealing & Spheroidizing Annealing of Metal Castings
Incomplete annealing of Metal Castings Definition: Incomplete annealing is a heat treatment process for steel castings, which involves heating the steel to a temperature range between Ac1 and Ac3 (for hypoeutectoid steel) or Ac1 and Accm (for hypereutectoid steel), cooli...Read more -
Mold Assembly in Castings
Mold assembly includes core setting, installation of chillers, core supports, and venting facilities, as well as securing the mold after assembly. The mold assembly for stainless steel investment castings focuses on wax pattern assembly and shell making, omitting the tra...Read more -
Residual Stress in Castings
Residual stress in metal castings is a significant issue that can affect the performance and longevity of metal components. Predicting and managing these stresses is crucial for ensuring the quality and durability of the final product. Prediction of Residual Stres...Read more -
The Filling Ability of Molten Metal During Casting Process
The filling ability of molten metal, also known as fluidity, is a crucial factor in the casting process. It refers to the capability of molten metal to fill the mold cavity completely before solidification. Understanding and optimizing this property is essential for prod...Read more -
Straightening of Castings
Straightening of castings, also known as correction or rectification, is a crucial step in the manufacturing process to ensure that cast metal parts meet precise dimensional specifications and structural integrity. Methods of Straightening There are several metho...Read more -
AISI 347 Stainless Steel Used for Castings
Stainless steel is a high alloy steel that can resist corrosion in air or chemically corrosive media. Stainless steel does not need to undergo surface treatment such as color plating, but it can also have the inherent surface properties of stainless steel. From a metallo...Read more -
Penetrant Testing to Detect Internal Defects in Castings
Penetration testing (PT) is also a kind of non-destructive testing. Its basic principle is to use the good permeability and capillary action of colored penetrants or fluorescent penetrants to narrow gaps. After penetration, removal, and imaging treatment, the surface def...Read more -
Detect Internal Defects in Castings by Ultrasonic
Ultrasonic testing can find defects such as shrinkage cavities, shrinkage porosity, porosity, inclusions, and cracks in castings with simple shapes and flat surfaces, and can determine the size and location of defects. Ultrasonic testing refers to a method of injecting u...Read more -
Three Kinds of Sand Casting Process
According the difference of the sand used for making the casting molds, sand casting process could be divided into many different kinds, such as green sand casting, coated sand casting (shell casting), self-hardening sand casting and dry sand casting (lost foam casting a...Read more -
Shell Mold Casting Process
Shell-mold casting process is also known as shell molding process. It is an expendable mold casting process that uses a resin covered sand to form the mold. In shell-mold casting process the mold is made like a shell. The thin or hollow mold is used so that weight of mol...Read more
