Preparation method of multi-composite treatment self-lubricating steel bushing and bushing
The invention provides a preparation method of a multi-composite treatment self-lubricating steel bushing and a corresponding bushing, and the preparation method comprises the following steps: S100, quenching a bushing blank at a high temperature of 870-900 DEG C, tempering at a medium temperature o...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention provides a preparation method of a multi-composite treatment self-lubricating steel bushing and a corresponding bushing, and the preparation method comprises the following steps: S100, quenching a bushing blank at a high temperature of 870-900 DEG C, tempering at a medium temperature of 580-630 DEG C, and carrying out heat preservation for 2-4 hours to complete quenching and tempering treatment; s200, the quenched and tempered lining blank is subjected to rough machining, an oil storage cavity is formed in the lining, and a crude lining is obtained; s300, the crude lining is quenched at the high temperature of 880-920 DEG C and tempered at the medium temperature of 400-450 DEG C, the heat preservation time is 2-4 hours, and carburizing and quenching treatment is completed; s400, the crude lining subjected to carburizing and quenching treatment is subjected to salt bath sulfur carbonitriding treatment, the temperature ranges from 400 DEG C to 450 DEG C, and the heat preservation time ranges from |
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