Manufacturing Process of Casting for KI Vietnam factory

Kingdom Flow Control Co., Ltd. (KI) Vietnam Factory are committed to providing our customers with high-quality valve products. Today, through photos, we will introduce you the casting process, giving you a deeper understanding of the production techniques and environment behind KI products in Vietnam.

Here are the casting process of KI Vietnam Factory: 

 1  Wax Injection: Injecting wax into the mold and make a wax pattern with the same shape as the product.

 2  Pattern Tree Assembly: Assembling the wax pattern to the gate.

 3  Shell Making: Coating the wax pattern tree assembly with refractory powders for around five layers and drying it under controlled temperature and humidity. 

 4  Dewaxing by Heating: The wax will be melted from the shell when heating the coated pattern tree assembly for around 30 minutes.

 5  Sintering: The shell is heated at a high temperature to provide additional heat resistance strength to prevent cracks during pouring.

 6  Pouring: Analyzing the test coupon of every furnace to ensure the chemical composition before pouring.

 7  Vibrating: Vibrating the shell on the pattern tree assembly and the casting parts will reveal accordingly.

 8  Cutting, Grinding and Shot Blasting: Cutting the single pattern from the tree assembly and grinding the gate to ensure the gate height. To brighten the surface by shot blasting for serval cycles.

 9  Heat Treatment: Conducting the heat treatment to improve the physical and mechanical properties of casting parts for better machinability.

 10  Pickling: Removing the adherence of the oxide on the stainless casting parts and enhancing the corrosion resist ability of its surface by acid chemical liquid.

 11  Machining: Machining the casting parts according to the required specifications.

 12  Pressure Testing: Pressure testing is a critical procedure used to ensure valves or fittings do not leak under specified pressures.