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Q what is dosing in injection molding
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HowarIrving Release Time: May 23, 2024, 7:36 PM
Draft angle in injection molding refers to the degree of taper or slope given to the walls of a plastic part, facilitating its removal from the mold. This angle is crucial for reducing the extraction force needed and minimizing the risk of part damage or surface defects. Typically, a draft angle between 1 to 3 degrees is used, but this can vary based on the part’s complexity, depth, and surface finish requirements. Incorporating an adequate draft angle is essential in mold design to ensure the quality of the finished product and improve the longevity of the mold by reducing wear and tear.
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Q how to poka yoke water lines injection molding
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KristinFast Release Time: May 14, 2024, 4:14 AM
Preventing air traps in injection molding involves optimization of the mold design and process parameters. Firstly, ensure proper venting in the mold to allow air to escape. Secondly, adjust injection speeds; slower speeds can reduce turbulence, minimizing air entrapment. Tool maintenance is also crucial; ensure vents are clean and unobstructed. Positioning of gates should be strategic to facilitate air escape from the cavity. Using simulation software during the design phase can help identify and rectify potential air trap locations. Lastly, experimenting with different types of runners and gates can also mitigate this issue. Addressing these factors can significantly reduce the occurrence of air traps, improving the quality of the molded parts.
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Q black pipe vs galvanized
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AprilFelix Release Time: May 13, 2024, 7:01 AM
Black pipe and galvanized pipe are both commonly used for various applications, but they differ significantly in their composition and uses. Black pipe, made from steel, is untreated and is typically used for gas supply in residential and commercial settings due to its high heat resistance. It is called “black” pipe because of the black iron oxide coating on its surface, which helps protect it from corrosion in gas exposures. Galvanized pipe, on the other hand, is also made of steel but is coated with a protective layer of zinc to prevent corrosion. This makes it ideal for carrying water and is often used in plumbing for water supply. However, the galvanized coating can eventually wear off, leading to rust. Thus, it is not recommended for gas lines due to the risk of zinc flaking off and causing blockages.
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Q closed profile hdpe pipe
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SallyWard Release Time: May 8, 2024, 6:12 AM
Closed profile HDPE (High-Density Polyethylene) pipe is a type of plastic pipe known for its robust, lightweight, and flexible characteristics. It is constructed with a unique design that combines the advantages of corrugated exteriors for strength and a smooth interior for optimal fluid flow. This design makes it an excellent choice for various applications, including stormwater management, sewage, and drainage systems. Its resistance to chemicals and low maintenance requirements further contribute to its popularity in infrastructure projects. When considering closed profile HDPE pipes for a project, it’s essential to evaluate factors such as load-bearing capacity, installation environment, and longevity to ensure it meets the specific needs of the application.
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Q liquid propane pipe sizing chart
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RalapOwen Release Time: May 6, 2024, 7:46 AM
The minimum slope for drainage pipes, typically used for sanitary or stormwater drainage systems, is crucial for ensuring proper flow and avoiding stagnation. The general guideline is a 2% slope, which translates to a 2-foot drop per 100 feet of pipe (2 cm per meter). However, this can vary based on local regulations and the size of the pipe. For instance, larger pipes might require a lesser slope because their greater diameter can handle a higher flow volume even at a shallower slope. Ensuring the correct slope is vital for preventing blockages and ensuring that the system efficiently removes water, avoiding potential health hazards and property damage. Consulting local building codes and possibly a civil engineer is recommended when planning drainage systems.
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