锻造压力对铸锻复合成形汽车爪极性能的影响

Effects of Forging Pressure on Properties of Casting-forging Compound Forming of Automobile Claw-poles

采用6个锻造压力进行了汽车爪极的铸锻复合成形试验,并进行了25℃室温和-40℃低温的力学性能测试与分析。结果表明：随锻造压力从30 MPa增大到130 MPa时,汽车爪极的室温和低温力学性能均先提高后下降。与30 MPa锻造压力相比,在90MPa锻造压力时铸锻复合成形爪极在25℃的抗拉强度、屈服强度和冲击吸收能分别增大52 MPa、61 MPa、38 J,-40℃的抗拉强度、屈服强度和冲击吸收能分别增大64 MPa、72 MPa、42 J。铸锻复合成形汽车爪极的锻造压力优选为90 MPa。

Casting-forging compound forming tests of automotive claw-pole were done by using six forging pressures.And the mechanical properties at room temperature of 25℃ and low temperature of-40℃ were tested and analyzed. The results show that the mechanical properties of the automotive claw-pole at room temperature and low temperature firstly improve and then decrease with forging pressure increasing from 30 MPa to 130 MPa. Compared with the forging pressure of30 MPa, When the claw-poles are formed by casting-forging composite forming at the pressure of 90 MPa, the tensile strength,yield strength and impact energy absorption at room temperature increase by 52 MPa, 61 MPa and 38 J, while the tensile strength, yield strength and impact energy absorption at-40℃ increase by 64 MPa, 72 MPa and 42 J, respectively. The optimized forging pressure of casting-forging compound forming of automobile claw-pole is 90 MPa.