Stainless Steel is used for investment castings that require high resistance to corrosion and wear in safety-critical applications for defense, oil and gas, medical and other commercial industries. Stainless steel is a group of ferrous alloys that all contain chromium – the key ingredient for superior corrosion resistance. There are many grades of stainless steel with varying alloy composition and physical characteristics. All stainless steels contain at least 10.5 percent chromium but may contain significantly more depending on the application.…

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Boat Rail Base Fittings are the important fittings that connect the tubing to the deck of a boat. There are a load of variables when picking handrail bases; the challenge is finding the right one. To help, they are designed with square and round bases in many angles, from 30° to 90°, thus to match existing handrail bases, meet any space restrictions or create a look for new installations.   One of the key features of boat rail base fittings…

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A golf putter is a club used in the golf sport to make relatively short and low-speed strokes with the intention of rolling the ball into the hole from a short distance away. Golf putter head is the critical component of the putter. Due to the complex shapes of golf putter, stainless steel investment casting is the suitable and ideal manufacturing method to produce the head blanks. Golf Putter Head Manufacturing Process In general, there are three main steps in…

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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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