Author Archives: jiangsutech

What is Sandblasting?


Sandblasting is a general term used to describe the act of propelling very fine bits of material at high-velocity to clean or etch a surface. Sand used to be the most commonly used material, but since the lung disease silicosis is caused by extended inhalation of the dust created by sand, other materials are now used in its place. Any small, relatively uniform particles will work, such as steel grit, copper slag, walnut shells, powdered abrasives, even bits of coconut […]

Comparing Metal Parts Manufacturing Methods


From machining to MIM, metal parts buyers have a wide range of options for addressing their part-production challenges. The key in choosing from among them is to remember that each technology brings something different to the table, and every part has unique requirements. Metal fabrication does not lack for depth as an industry. No fewer than 6 distinct — and commonly used — techniques exist for the manufacture of metal pieces and parts in 2019. Each can be considered the […]

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Coining


Coining is a closed die forging process, in which pressure is applied on the surface of the forging in order to obtain closer tolerances, smoother surfaces and eliminate draft. Closed die forging is a process in which forging is done by placing the work piece between two shaped dies. This process may be done in hot or cold working conditions, but is predominantly a cold work process. In coining, pressure is applied to a portion or the entire surface of […]

Secondary Operations for Powder Metallurgy Parts


A sintered powder metallurgy (PM) part can be finished or treated just like any other metal part to achieve desired characteristics-corrosion resistance, improve strength ans hardness, surface wear resistance, edge-sharpness relief, porosity sealing, and control of size and surface finish. Plating, coating, deburring, welding, furnace brazing, heat treating, and stem treating are among secondary operations that are used successfully in the process of fabricating finished PM parts. Unlikes parts made using other metal forming processes, powder metallurgy parts can be […]

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Common manufacturing processes for plastic and metal parts


One important tenet of Design for Manufacturing / Design for Assembly is the idea that the mechanical engineer and the industrial designer should choose the manufacturing processes that will be used to mass produce custom parts before finalizing the design for that part (and everything that it touches). Here are some common processes that are used to produce plastic and metal parts in consumer electronics and industrial automation applications. Some post-processes for plastic parts Sometimes plastic parts have to go […]

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Finishing Operations for Forgings


There are two categories of finishing operations: those that produce minor dimensional corrections, and surface treatment processes. Coining, sizing and straightening are commonly used to improve the dimensional accuracy of forgings. When tolerances closer than those that can be economically produced in the forging die are specified, coining and sizing operations are often employed. These processes cause plastic deformation of the forging, either by striking or squeezing a defined area. Coining may be performed either hot or cold, and can […]

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Warm Forging Process


Warm forging is performed with the workpiece heated to a range that is generally above the work hardening temperature and below the temperature at which scale forms. The process fills the niche between the closer tolerance, but sometimes expensive cold forging process and the somewhat lower precision hot forging process. It is being used to produce close tolerance components in steel alloys that were not feasible or impossible by cold forging. It is also being used to produce components very […]

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Cold Forging Process


Cold Forging Process Cold forging is one of the most widely used chipless forming processes, often requiring no machining other than drilling. The commonly accepted definition is the forming or forging of a bulk material at room temperature with no heating of the initial slug or inter-stages. The term “no heating” does not include in-process annealing, which may be performed at intermediate stages to relieve the effects of work hardening. The process produces greater dimensional accuracy than hot forming, and […]

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The process of injection molding explained


Injection molding is a manufacturing process used to produce single parts and products using various materials, most commonly thermosetting and thermoplastic polymers. Today, injection molding is the most popular method of manufacturing parts and is used to produce a variety of everyday plastic products, including packaging, toys, telephones, bottle lids, chairs and many more. Injection molding is also used to manufacture complex, small metal parts, known as Metal Injection Molding (MIM). But just how does injection molding work? The machine An injection […]

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MIM – Advanced technology that brings the future of metalworking to the present


Representing one of the advanced metal processing techniques, MIM (Metal Injection Molding) was created by fusing traditional plastic injection molding technology with powder metallurgy. Injection molding using metal dies makes it easy to manufacture otherwise hard to machine parts, including micro, precision, intricately shaped, and 3D parts. MIM is also superbly suited for mass production, as demonstrated by our ability to manufacture at rates ranging from 5,000 to 1 million pieces per month. MIM works best for parts that weigh […]

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