Fatigue-resistant and corrosion-resistant round steel for forging and pressing and preparation method thereof
A corrosion-resistant and fatigue-resistant technology, which is applied in the field of fatigue-resistant and corrosion-resistant forging round steel and its preparation, can solve the problem of unsatisfactory yield strength, tensile strength, unmentioned hardness, fatigue resistance and corrosion resistance, unfavorable When it comes to issues such as fatigue resistance and corrosion resistance, it achieves the effects of short manufacturing cycle, low manufacturing cost and good mechanical properties
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[0026] A method for producing round steel for fatigue-resistant and corrosion-resistant forging comprises the following steps:
[0027] 1) Batching process: melted composition target: melted carbon 0.51-0.53%, melted phosphorus 0.021-0.024%, and the content of residual elements meets the standard requirements. The baking temperature of the alloy meets the technical requirements, and the moisture content of the metallurgical auxiliary material is 0.35-0.41%.
[0028] 2) Electric furnace smelting: endpoint C: 0.21-0.22%, P: 0.022-0.024%, the content of residual elements meets the standard requirements; tapping temperature is 1635-1641°C.
[0029] 3) Continuous casting process: the billet enters the drawing and leveling machine at a temperature of 925-926°C, enters the pit for slow cooling for 24-25 hours, and exits the pit at a temperature of 240-245°C.
[0030] The chemical composition of table 1 embodiment 1-3 round steel forms
[0031]
[0032]
[0033] The batching p...
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