A high temperature wear resistant steel plate and its manufacturing method
A manufacturing method and high-temperature-resistant technology, applied in the field of metallurgical manufacturing, can solve problems such as increased manufacturing costs, resource consumption, and limitations in high-temperature wear resistance, and achieve the effects of good welding performance, excellent performance, and high high-temperature wear resistance
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Embodiment 1
[0023] The molten steel smelted according to the composition of Example 1 in Table 1 is vacuum degassed and then continuously cast. The thickness of the continuous casting slab is 220mm. The steel slab is heated to a furnace temperature of 1150°C and kept for 180 minutes. Crystallization rolling and non-recrystallization rolling, where the final rolling temperature in the recrystallization zone is 1030°C, the final rolling temperature in the non-recrystallization zone is 840°C, the final rolling thickness of the steel plate is 30mm, and the rolling speed is 10°C / s after rolling. After rapid cooling to 680°C, air cooling to room temperature, and then off-line quenching and tempering. There are two stages of heating during quenching. The primary heating temperature is 650°C and the holding time is 90 minutes. The secondary heating temperature is 860°C and the holding time is 20 minutes. fire.
Embodiment 2
[0025] The molten steel smelted according to the composition of Example 2 in Table 1 is vacuum degassed and then continuously cast. The thickness of the continuous casting slab is 220 mm. The steel slab is heated to a furnace temperature of 1250 ° C. After holding for 200 minutes, it is released from the furnace for austenite re- Crystallization rolling and rolling in the non-recrystallization area, wherein the final rolling temperature in the recrystallization area is 1020°C, the final rolling temperature in the non-recrystallization area is 830°C, the final rolling thickness of the steel plate is 25mm, and the rolling speed is 15°C / s after rolling. Rapid cooling to 650°C, then air cooling to room temperature, and then off-line quenching and tempering. There are two stages of heating during quenching, of which the primary heating temperature is 640°C and the holding time is 70 minutes, the secondary heating temperature is 850°C, and the holding time is 20 minutes; fire.
Embodiment 3
[0027] The molten steel smelted according to the composition of Example 3 in Table 1 is vacuum degassed and then continuously cast. The thickness of the continuous casting slab is 200 mm. The steel slab is heated to a furnace temperature of 1250 ° C. After holding for 220 minutes, it is taken out of the furnace for austenite re- Crystallization rolling and non-recrystallization area rolling, wherein the final rolling temperature in the recrystallization area is 1040°C, the final rolling temperature in the non-recrystallization area is 840°C, the final rolling thickness of the steel plate is 20mm, and the rolling speed is 15°C / s after rolling. Rapid cooling to 630°C and then air cooling to room temperature, then off-line quenching and tempering. During quenching, it is divided into two stages of heating, of which the heating temperature of the first stage is 650°C, and the holding time is 50 minutes; the heating temperature of the second stage is 880°C, and the holding time is 2...
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Abstract
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