When the two punches are squeezed, the blank metal is evenly deformed, and no pit phenomenon occurs. It can reduce the process force of the small end punch (protrusion), reduce the possibility of early failure of the small end punch, effectively extend the life of the mold, and improve the internal quality of the formed spiral bevel gear. The precision forging small cone angle spiral bevel gear double-action mold is characterized by multiple actions such as horizontal split mold clamping, upper and lower punch punching, mold opening and unloading on a universal single-action press. Dynamic closed mold.
When the press slider is at the top dead center, the springs are relaxed, the guide opening and closing wedge plates are connected to the upper and lower molds, and the wider lower end is open to the left and right locking mold slots), the spring is compressed, and the lower mold is at the highest point. The limit block of the upper mold is disengaged from the upper mold base-distance, and the mold is in an open state. The preform is loaded into the lower mold, and the press slider is activated to carry the upper punch. The guiding opening and closing wedge plate and the limiting block descending, the upper mold, hitting the lower mold, and the narrow section of the rear guiding opening and closing wedge plate enters between the left and right locking mold slots, and the left and right locking grooves are pushed by the spring ' The plates are closed and the upper and lower molds are locked to form a closed cavity. The press slider continues to descend, compressing successively and lowering the punch. And on the punch. The preform is then squeezed until the lower die holder touches the lower die of the lower die plate and the upper and lower punches reach the end point. The press slider stops and the workpiece is formed. The return of the press slide is raised, the guide opening and closing wedge plate/opening the left and right clamping groove plate with the oblique wedge surface), the upper mold is disengaged from the workpiece, and when the upper mold reaches the top dead center with the slider, the topping mechanism is started. The ejector rod 0 ejects the workpiece and completes a work cycle. At the top of the top bar 0 punch. During the unloading process, there is relative rotation between the workpiece and the punch, which is also necessary for the unloading of the precision forged spiral bevel gear.
Conclusion The design and manufacture of double-action closed molds forging forged spiral bevel gears on general-purpose presses is suitable for general use in general factories and has a good economic prospect.
Nickel-based alloy powders are commonly used in plasma transfer arc welding (PTAW) due to their excellent corrosion resistance, high temperature strength, and good weldability. These alloys are typically composed of nickel as the base metal, with various alloying elements added to enhance specific properties.
Some commonly used nickel-based alloy powders for PTAW include:
1. Inconel 625: This alloy powder is widely used for PTAW due to its high strength, excellent resistance to corrosion, and oxidation at elevated temperatures. It is commonly used in applications involving seawater, chemical processing, and aerospace industries.
2. Hastelloy X: This alloy powder is known for its high-temperature strength and oxidation resistance. It is commonly used in applications involving gas turbine engines, industrial furnace components, and chemical processing.
3. Monel 400: This alloy powder is known for its excellent resistance to corrosion, particularly in marine environments. It is commonly used in applications involving seawater, chemical processing, and oil refining.
4. Inconel 718: This alloy powder is known for its high strength, excellent resistance to corrosion, and good weldability. It is commonly used in applications involving aerospace, oil and gas, and nuclear industries.
5. Inconel 601: This alloy powder is known for its excellent resistance to high-temperature oxidation and corrosion. It is commonly used in applications involving heat treatment equipment, chemical processing, and power generation.
These nickel-based alloy powders can be used in PTAW processes to create high-quality welds with excellent mechanical properties and resistance to corrosion and high temperatures.
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