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  • Sheet Metal Fabrication
    What's the Sheet Metal Fabrication? Sheet metal fabrication is the process of turning flat sheet metals, typically 0.15 mm to 10 mm thick, into parts and structures of various shapes. The stock materials for this process are flat metal sheets.  Sheet metal is bent, or formed, from two dimensions to three by the use of hardened steel tools and dies which, when forced together with hydraulic power, form the sheet metal to shape and exact angle. Three main ways of Sheet Metal Fabrication >Laser Cutting In laser cutting, a high-density laser beam is directed onto a workpiece to melt, vaporise, or burn through it, effectively cutting the material. Laser cutters are used for cutting, boring, and engraving. There are three types of lasers used in laser cutting; CO2 (carbon dioxide), Nd (neodymium), Nd:YAG (neodymium-doped yttrium aluminium garnet). CO2 lasers have high energy efficiency and high power output ratio, and are used for cutting thin material, engraving, and boring. Nd lasers have high energy but low repetition efficiency. They are used for engraving, boring, and welding. Nd:YAG lasers have a very high power output and can cut thicker materials. However, they are more expensive to operate than CO2. Laser cutters can work with aluminum, steel, copper, stainless steel, and other metals. They are best used for cutting thin workpieces (maximum thickness of 15 mm for aluminium and 6 mm for steel), engraving, and boring >Water-Jet Cutting In water-jet cutting, a nozzle is used to focus a jet of water at very high pressures to cut a workpiece. For relatively soft material like rubber and wood, only water is used. A mixture of water and abrasive granular substances is used to cut harder material such as metals. Water-jet cutting can cut material of various thicknesses. The maximum thickness that can be cut depends on the material. Of all CNC cutting methods, waterjet cutting is the most precise with tolerances between 0.05 mm and 0.1 mm. One of the reasons for its high precision is that unlike plasma and laser counterparts, waterjet cutting does not generate heat hence there is no heat affected zone in the workpiece. Waterjet cutting is very versatile as it is used to cut hard material such as aluminum, steel, copper, stainless steel, and other metal alloys as well as softer materials like polymers, elastomers, wood, and foam. >Plasma Cutting Plasma cutting works by applying heat and energy to a gas to turn it to plasma. A jet of hot plasma is then accelerated using an inert gas or air, out of the cutting nozzle and onto the workpiece. The plasma completes an electrical arc with the workpiece, melting and cutting it. Being an electrical process, plasma cutters only work with electrically conductive material. Plasma cutters can cut through very thick material, up to 300 mm for aluminum and 200 mm for steel, with a tolerance of 0.2 mm. Other materials that are processed using plasma cutters are stainless steel, copper, and other metal alloys. Depending on the complexity of the part to be produced, 2-axis or 3-axis cutters may be used. Although plasma cutters are not as diverse or precise as waterjet and laser cutters, they are the best choice for thick electrically conductive metal parts, as they are faster and more cost-effective for cutting such materials.

    Hot Tags : Sheet metal Fabrication main ways of Sheet Metal Fabrication Laser Cutting Water-Jet Cutting Plasma Cutting Good Quality for sheet metal Fabrication copper material for sheet metal Fabrication stainless steel for sheet metal Fabrication

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  • Die casting molding
    Die casting is a metal casting process that is characterized by forcing molten metal under high pressure into a mould cavity. The mold cavity is created using two hardened tool steel dies which have been machined into shape and work similarly to an injection mold during the process. Most die castings are made from non-ferrous metals, specifically zinc, copper, aluminium, magnesium, lead, pewter, and tin-based alloys. Depending on the type of metal being cast, a hot- or cold-chamber machine is used.  What's the type of die casting molding Aluminum Alloy Die-Casting  If you need more information about the molding Learn More Zinc Alloy Die-casting If you need more information about the molding Learn More       Magnesium Alloy Die-Casting If you need more information about the molding Learn More Steel  Die-Casting If you need more information about the molding Learn More   How to work of Die-casting  Mold Preparation:Fixed the mold into the machine,usually consisting of two parts: the moved half and fixed half                                                         Heating Molten Material: According to the required materials, heat metals (such as aluminum alloys,zinc alloys, ) to a suffficicient temperature to melt them into a liquid state. Mold Closure: Merge the moved half and fixed half together to form a closed chamber                                                                                                   Injection Metal:Molten metal is injected into a closed mold through the die casting machine. the process is usually controlled by a hydraulic system to ensure that metal fills whote cavity Cooling and Solidification:After metal fills the mold, mold will be rapidly cooled by cooling water or other cooling media,causing the molten metal to solidify rapidly Mold Opening:Once solidification is completed, the moved and fixed half will separate and uncover the meatl parts formed during the die-casting process Flash removal and Processing:Remove any defective parts such as flash edges and excess materials.then,processing steps such as cutting, polishing, punching,  Surface treatment:Surface treatment of die-casting parts, such as painting,electroplating, anodizing, as needed to improve appearcance quality and anti-corrosion performance What's the main type of Finish for Die-casting Product There are several main reasons for surface treatment of die-casting products: Aesthetics and decoration: Through surface treatment, it can provide better appearance quality and decoration effect for die-casting products. For example, treatments such as spraying coatings, electroplating, or anodizing can present products with rich colors, glosses, and textures, enhance product aesthetics, and meet market demand and consumer aesthetic requirements. Surface protection: Some metal materials are prone to oxidation, corrosion, wear, and environmental impact, and surface treatment can provide a protective layer to extend the service life of the product. For example, electroplating or coating can form a corrosion-resistant barrier on the surface of die-casting products to prevent metal oxidation or damage. Improving functionality: Surface treatment can also improve the functionality of die-casting products. For example, special coatings can increase the friction resistance of products and provide better anti slip performance; Electroplating can improve conductivity and electromagnetic interference resistance. Blocking defects: During the die-casting process, some defects may occur, such as bubbles, protrusions, defects, etc. By surface treatment, these defects can be covered or repaired, making the surface of the product smoother and more uniform. Increase wear and corrosion resistance: Some surface treatment methods, such as coating, electroplating, etc., can improve the wear and corrosion resistance of products. This is very important for applications that require resistance to friction, chemical attack, or harsh environments, as it can extend the lifespan of the product and improve its performance. Spraying Coating Electroplating  Anodizing  Power Coating        

    Hot Tags : Die casting molding

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  • plastic injection molding
    What is Plastic Injectiong Moudling Process? Injection moulding is a manufacturing process for producing parts by injecting molten material into a mould or mold. Injection moulding can be performed with a host of materials mainly including metals (for which the process is called die-casting), glasses, elastomers, confections, and most commonly thermoplastic and thermosetting polymers. Material for the part is fed into a heated barrel, mixed (using a helical screw), and injected into a mould cavity, where it cools and hardens to the configuration of the cavity, After a product is designed, usually by an industrial designer or an engineer, moulds are made by a mould-maker (or toolmaker) from metal, usually either steel or aluminium, and precision-machined to form the features of the desired part. Injection moulding is widely used for manufacturing a variety of parts, from the smallest components to entire body panels of cars. Advances in 3D printing technology, using photopolymers that do not melt during the injection moulding of some lower-temperature thermoplastics, can be used for some simple injection moulds. Some Thermoset material can be injection: Material Mold Temperature(°C) Melt Temperature(°C) Melt Pressure(MPa) PE 60-70 170-200 60-100 PP 80-90 160-220 70-100 PC 60-110 230-285 80-130 POM 90-120 160-190 80-130 ABS 50-80 170-200 60-100 PMMA 40-60 160-180 80-130 Surface Finish Options Draft angle requirements will vary by requested finish. Industry standard Mold-Tech finishes are also available.             FINISH   DESCRIPTION PM-F0  non-cosmetic, finish to Protolabs' discretion PM-F1 low-cosmetic, most toolmarks removed PM-F2   non-cosmetic, EDM permissible SPI-C1 600 grit stone, 10-12 Ra PM-T1 SPI-C1 + light bead blast PM-T2 SPI-C1 + medium bead blast SPI-B1 600 grit paper, 2-3 Ra SPI-A2 grade #2 diamond buff, 1-2 Ra  What's main  defect of injection molding? The complexity of the injection molding process, and the interdependence of the many variables involved, means that any molding defect may have several different causes, of which more than one may be present at any given time Problem Possible Causes Picture Sink Marks Melt temperature too high Insufficient material injected Insufficient dwell time Premature gate freezing Sharp variations in wall thickness Wrong gate location Part ejected too hot Cavity pressure too low Voids Volatiles from overheated material Condensation on granules Premature freezing of flow path to thick section Flow marks Melt temperature too low Weld lines Incorrect gate location mold temperature too low Burn marks Incorrect filling pattern Warping Melt temperature too low Incorrect part design Overpacking near gate Sharp variations in wall thickness Flow length too great Unbalanced multiple gates Part ejected too hot Inadequate or badly located ejectors Temperature variations between the mold halves Some Case From Xiamen wiesel Technology co.,Ltd

    Hot Tags : plastic injecting mold OEM/ODM plastic injection molding Auto part injection molding Order your Plastic injection molding part medical equipment plastic injection molding

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