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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 -
Shelling and Surface Cleaning of Castings
Shelling and surface cleaning of castings Casting group shell cleaning Cooling of castings After the shell is poured, the cooling time of the casting in the mold is related to the material, shape, size and production conditions of the casting. Generally, for alloy castin...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 -
Full Annealing for Metal Castings
Definition The heat treatment process of steel refers to the specific heating, insulation and cooling process parameters of steel during heat treatment, which are formulated according to the structural transformation law of steel during heating and cooling. Classificatio...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 -
Characteristics of Investment Casting
In metal processing and manufacturing, investment casting has become one of the preferred processes for the production of high-precision and complex structure castings with its unique advantages. This ancient and constantly innovative technology has greatly promoted the ...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
