Die-cast cage of raw materials as aluminum, brass, raw material melt after pouring into the Diecasting die for the die-casting machine, cage die cast forming at once. Casting lathe on the bus to go to the gate. This process is characterized by:
(1) maintain direct pressure molding, to obtain a good geometry and precision without mechanical processing, the production efficiency is high.
(2) after the shell with Moule-shaped, metallic crystalline solidification, organizational precision of the surface and wear resistance.
(3) high material utilization and reduce costs.
But when you die-cast aluminum alloy cage, need large-tonnage equipment, mold design and manufacturing complex, easy to make when you die-cast cage Pocket pulled. In the bearing to withstand shock, vibration and speed under changing conditions, needs to further improve the quality of die-cast cage.
2. the method of manufacturing plastic casting cage
Vacuum drying of granular plastic placed in the barrel, after resistance heating wire melting into a semi-liquid state, help move the piston or screw compression so that half of liquid raw material from the nozzle injection molding machine die, acquired through thermal insulation and cooling need cages. His process is characterized by:
(1) keep a plastic forming, to obtain a precise geometric shape and dimensional accuracy and surface roughness in low value, without machining, high production efficiency.
(2) mold and plastic casts-simple, bearing Assembly easy, easy to automate controls.
(3) plastic cages with wear-resistant, anti-magnetic and low friction and good performance.
But because of thermal deformation in the plastic itself, aging and embrittlement and other shortcomings, as well as structure and of cage-plastic injection process on some of the issues, keep the plastic casting application is restricted.
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