Copper alloy bearing holding frame and its preparation method
A bearing cage, copper alloy technology, applied in the direction of bearing components, shafts and bearings, mechanical equipment, etc., can solve the problems of hot melt erosion of mold materials, short mold life, waste products, etc., to achieve good organizational structure, excellent mechanical properties, Simple operation method
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Embodiment 1
[0016] Melting brass HPb59-1 according to the standard, the chemical composition is Cu59 Pb1.2 total impurities ≤ 2 Zn balance, pouring into ingots, extruding into tubes, heat-treating the tubes at 750±20°C for 2 times, and then The tube with superplasticity is cut into a ring-shaped blank, heated, placed in a mold at 630±10°C, and the upper pressing head moves downward at a speed of 35 mm / min to generate a gradual pressure of 0.1 to 40 MPa. Preparation Made of brass HPb59-1 bearing cage, the mechanical properties of the cage reach σ D ≥350Mpa, δ≥20%, HB>80.
Embodiment 2
[0018] The pipe prepared in Example 1 was heat-treated 3 times at a temperature of 730±20°C, and then the superplastic pipe was cut into a ring-shaped blank and heated, placed in a mold at 640±10°C, and the upper pressure head was heated at 35°C. It moves downward at a speed of mm / min to generate a gradually rising pressure of 0.1-40 MPa, and prepares a brass HPb59-1 bearing cage.
Embodiment 3
[0020] The pipe prepared in Example 1 was heat-treated twice at a temperature of 800±20°C, and then the superplastic pipe was cut into a ring-shaped blank and heated, placed in a mold at 620±10°C, and the upper pressure head was set at 35°C. It moves downward at a speed of mm / min to generate a gradually rising pressure of 0.1-40 MPa, and prepares a brass HPb59-1 bearing cage.
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