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采用不同的模具预热温度和始锻温度进行了30Cr Mn Si V钻杆接头的锻压试验,并进行了钻杆冲击和磨损性能的测试与分析。结果表明:在试验条件下,随模具预热温度从210℃逐渐增大到330℃或者随始锻温度从1120℃逐渐增大到1240℃,钻杆接头的冲击性能和耐磨损性能均先提高后下降。钻杆接头的模具预热温度和始锻温度分别优选为300、1210℃。与210℃模具预热锻造的接头相比,300℃模具预热温度锻造的钻杆接头的冲击吸收功增大47%,磨损体积减小84%。与1120℃始锻温度锻造的接头相比,1210℃始锻温度锻造的钻杆接头冲击吸收功增大71%,磨损体积减小85%。
The forging test of 30Cr Mn Si V drill pipe joint was carried out by using different mold preheating temperature and initial forging temperature. The impact and wear performance of the drill pipe were tested and analyzed. The results show that under the test conditions, as the preheating temperature of the die increases from 210 ℃ to 330 ℃ or the initial forging temperature increases from 1120 ℃ to 1240 ℃, the impact performance and wear resistance of the drill joint Increase and then decline. The die preheating temperature and the forging temperature of the drill pipe joint are preferably 300, 1210 ° C., respectively. Compared with the preheating forging at 210 ℃, the impact energy absorbed by the forged pipe joints by preheating at 300 ℃ increased by 47% and the wear volume decreased by 84%. Compared with the forging temperature of 1120 ℃ forging temperature, the impact energy absorbed by the forged pipe joints increased by 71% and the wear volume decreased by 85% at 1210 ℃ forging temperature.