CFS Foundry is the professional investment casting manufacturer for various stainless steel casting. As a custom stainless steel casting supplier, it is important to control the quality of stainless steel investment castings and common to meet porosity defect during manufacturing process. According to our experience in casting stainless steel, we would like to analyze how to eliminate porosity defect of stainless steel investment casting. Casting Structure and Original Production Process Take ball valve casting with 1”inner hole as example, material is 316 stainless…

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There are many factors influencing the formation of casting defects from the perspectives of defect types and possible causes of stainless steel investment castings, and the quality control of each link will affect the final casting quality. Stainless steel casting manufacturer can control the casting quality strictly from the following three aspects based on the the casting defects happened in the stainless steel investment casting production practice. 1. Raw Material Control The surface layer material has an important influence on…

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The exhaust manifold refers to a diverging manifold which is connected to the engine cylinder block, and the exhaust gas of each cylinder is collected and introduced into the exhaust manifold. To minimize the exhaust resistance and avoid mutual interference between the cylinders are the main requirements for it. Mutual interference will occur between the cylinders when the exhaust gas is excessively concentrated, that is, when a cylinder is exhausted, it will just hit the exhaust gas from other cylinders.…

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Valve bonnet is the the cover for the opening in the body, and it is the second most important valve component of a pressure valve. Like valve bodies, bonnets are also designed in different shapes and dimensions. A bonnet, which has the same casting material as the body, acts as a cover on the valve body. It is commonly connected to the body by a threaded, bolted, or welded joint. During manufacture of the valve, the internal components, such as…

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SS316 and 17-4 PH are common used two types of stainless steel grades for investment casting. 316 is typical austenite stainless steel casting grade, while 17-4 PH stainless steel is precipitation hardening material grade, which are all defined in American standards. When you compare Stainless Steel 17-4 ph vs 316 for casting, it is obvious that 17-4 PH has the higher hardening content. Precipitation hardening grade is actually a combination of two stainless steel structures such as austenite and martensite.…

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Impellers are the component of the mixer which imparts flow. Mixing impeller, also called agitator blades, is designed and manufactured to transfer the energy driven by the motor to the contents of a tank as quickly and efficiently as possible. There are mainly four types of mixing impellers, and each mixing impeller type converts the energy given to it in a different way: Airfoil: Generally most efficient because it produces the maximum pumping with the lowest shear. Pitch Blade: Ideal…

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With the rapid development of industry, stir mixing has been widely used in petroleum, chemical, medicine, pesticide, daily chemicals, cosmetics, paper making and wastewater treatment industries. In these industrial production, it cannot do without mechanical stirring equipments, and stainless steel mixing impeller for agitator is the key component of mechanical stirring equipment. Agitator blade impeller is a complex casting, which not only has complex shape, but also needs to be symmetrical and balanced, and some have complex curved surface. At…

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The turbine housing is the housing that covers the turbine and directs the exhaust gasses into the turbine wheel. The turbine housing is one of the most crucial parts of the turbo-charger, to determine how the turbo will peform. CFS Foundry acts as the OEM stainless steel casting supplier for turbine housings. Stainless Steel Investment Casting for Turbine Housing Stainless steel casting in CFS Foundry is an excellent lost wax investment casting process. It is widely used to cast all…

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A pump is a mechanical device that is used to force a fluid (a liquid or a gas) to move forward inside a pipeline or hose. They can also be used to produce pressure by the creation of a suction (partial vacuum), which causes the fluid to rise to a higher altitude. Stainless Steel Casting For Pump Stainless steel has long been a durable, reliable building material for magnetic drive pumps. The properties of stainless steel make it an excellent…

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Stainless steel casting is a custom investment casting manufacturing process that produce various stainless steel products by pouring liquid stainless steel into molds after dewaxing. The advantage of stainless steel casting over forging is that there is no limitation on the shape, in other words, no matter how complex the product is, it can be always made by stainless steel casting. To produce superior quality stainless steel castings but low prices, it is a wise choice to select a good…

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