论文部分内容阅读
为迅速提高我国钎具质量,早日赶上世界先进水平,冶金部钎钢协作组于1981年3月至5日在梅山铁矿组织了一次规摸较大的国内外中深孔钎具寿命联合标定试验。本次联合标定的中深孔钎具有瑞典山德维克公司φ32毫米25CrNi_3M_0成品钎杆及套管,国产φ32毫米30sim_nm_ov和35sim_nm_ov成品钎杆及套管,多种牌号硬质合金φ58十字型和柱齿型钎头,长度分别为380和330毫米的钎尾等。
In order to rapidly improve the quality of China’s brazing tools and catch up with the world’s advanced level as early as possible, the Metallurgical Department Brazing Steel Cooperation Group organized a large-scale deep-hole drilling tool life combination at the Meishan Iron Mine from March to March 1981. Calibration test. The joint calibration of the deep hole brazing with Sweden Sandvik φ32 mm 25CrNi_3M_0 finished rod and casing, domestic φ32 mm 30sim_nm_ov and 35sim_nm_ov finished rod and bushing, a variety of grades carbide φ58 cross and column Toothed bit, the length of 380 and 330 millimeters of shank and so on.