A bearing ring blank and its casting-rolling composite process
A technology of bearing rings and composite technology, which is applied in the direction of casting molds, casting mold components, manufacturing tools, etc., can solve the problems of many processing steps of forging blanks, low quality of bearing rings, waste of labor and materials, etc., and achieve the elimination of casting defects , Improve water erosion resistance and improve production efficiency
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Embodiment 1
[0037] This embodiment provides a bearing ring blank. The bearing ring blank is composed of: C: 0.40%, Mn: 1.00%, Si: 0.45%, Cr: 1.25%, Mo: 0.20%, P: 0.05%, Ti: 0.09%, Al: 0.20%, V: 0.20%, Ni: 0.30%, Cu: 0.20%, S: 0.02%, composite rare earth: 0.12%, the balance is Fe; composite rare earth includes by mass percentage The following components: lanthanum: 25%, praseodymium: 16%, dysprosium: 13%, holmium: 6%, gadolinium: 9%, yttrium: 9%, cerium: 9%, neodymium: 8%, europium: 5%.
[0038] The casting and rolling composite process of the bearing ring blank has the following operation steps:
[0039] (1) Use molding sand to make mixed molds, and send the molds to an oven for drying at 210°C for later use;
[0040] The molding sand includes the following components in terms of mass percentage: water glass 9%, bentonite: 2%, and the rest is quartz sand; place the quartz sand in a sand mixer and then add bentonite for mixing, dry mix for 9 minutes, then add water glass, continue Mix for ...
Embodiment 2
[0049] This embodiment provides a bearing ring blank. The bearing ring blank is composed of: C: 0.45%, Mn: 0.80%, Si: 0.35%, Cr: 1.00%, Mo: 0.25%, P: 0.04%, Ti: 0.08%, Al: 0.23%, V: 0.10%, Ni: 0.20%, Cu: 0.15%, S: 0.01%, composite rare earth: 0.14%, and the balance is Fe;
[0050] The compound rare earth includes the following components by mass percentage: lanthanum: 25%, praseodymium: 18%, dysprosium: 11%, holmium: 7%, gadolinium: 8%, yttrium: 8%, cerium: 8%, neodymium: 8%, Europium: 7%.
[0051] The casting and rolling composite process of the bearing ring blank has the following operation steps:
[0052] (1) Use molding sand to make mixed molds, and send the molds to an oven for drying at 200°C for later use;
[0053] The molding sand includes the following components in terms of mass percentage: water glass 11%, bentonite: 1%, and the rest is quartz sand; place the quartz sand in a sand mixer and then add bentonite for mixing, dry mix for 11 minutes, then add water glas...
Embodiment 3
[0062] This embodiment provides a bearing ring blank. The bearing ring blank is composed of: C: 0.42%, Mn: 0.9%, Si: 0.55%, Cr: 0.95%, Mo: 0.30%, P: 0.03%, Ti: 0.10%, Al: 0.21%, V: 0.15%, Ni: 0.15%, Cu: 0.25%, S: 0.015%, composite rare earth: 0.13%, and the balance is Fe;
[0063] The compound rare earth includes the following components by mass percentage: lanthanum: 30%, praseodymium: 15%, dysprosium: 11%, holmium: 5%, gadolinium: 8%, yttrium: 8%, cerium: 8%, neodymium: 7%, Europium: 8%.
[0064] The casting and rolling composite process of the bearing ring blank has the following operation steps:
[0065] (1) Use molding sand to make mixed molds, and send the molds to an oven for drying at 205°C for later use;
[0066] The molding sand includes the following components in terms of mass percentage: water glass 8%, bentonite: 2%, and the rest is quartz sand; place the quartz sand in a sand mixer and then add bentonite for mixing, dry mix for 10 minutes, then add water glass...
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