论文部分内容阅读
接杆钢钎上的波形螺纹一般用车床削成形。我矿采用了热压加工钢钎螺纹工艺,使钢钎钎维组织不受破坏,提高了钢钎的使用寿命、同时一次锻压成形,不需热处理,使工效大大提高。我矿接杆钢钎的螺纹使用锻钎机锻压。锻压时钢钎温度保持在850℃～1150℃之间;先将六角钢钎中心孔端扩大,随后在内径φ33.5毫米,孔长65毫米的模具中把钢钎镦元,并保证外元不小于φ32毫米、中
Post-shaped steel rod on the general shape of the thread cutting with a lathe. I mine the use of hot-pressed steel brazing thread process, the brazing of the braided and undisturbed tissue to improve the service life of steel brazing, forming a forging at the same time, without heat treatment, the work efficiency greatly increased. I use mine shaft rod forging welding forging thread. Forging the temperature of the steel to maintain between 850 ℃ ~ 1150 ℃; first hexagonal brazing center hole end, followed by φ33.5 mm in diameter, hole length 65 mm in the mold upset the drill rod, and ensure the outer Not less than φ32 mm, medium