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Production technology of wire drawing

am the following specifications to explore practical techniques. (2) pre-production process ① Process surface treatment line stretched borax concentration of 8 to 15, the temperature is above 8O ℃. ② drawing process route: According to the specifications of steel wire: 5.5mm ~ 4.85mm ~ 4.45mm ~. 1mm ~ 3.8mm5.5mm ~. 83mm ~ 4.40mm ~ 4.05mm ~ 3.74mm ~ 3.47mm ~ 3.20mm5.5mm ~ 4.83mm ~. 56mm ~ 4.1lmm ~ 3.74mm ~ 3.41mm ~ 3.14mm ~ 2.91mm ~ 2.72mm5.5mm ~ 4.83mm4.26mm3.79mm ~ 3.34mm ~. 01mm ~ 2.69mm ~ 2.42mm ~ 2.18mm ~ 1.98mm ~ 1.85mm5.3 test results first and second rod rod wire drawing production are shown in Table 1 and Table 2.80 Luo Sumei : wire drawing production technology in Table 1 of 4 first production tables Rod Roberts Rod Roberts 2, the second batch of production statistics from the table, the data can be seen: the first drawing of the twisted rod waste and specifications for the proportion of waste is too high, the use of second rod is better, but the finished product rate also does not meet the design specifications. Therefore, it is necessary equipment, process adjustments, and the material conditions were compared. Trial of 6 6.1 The drawing process analysis and improvement process (1) wire drawing production and design capabilities have a greater gap, mainly for the following reasons: ① LZ2 a lO/6OO Straight wire drawing machine is not stable enough to play wide open for individual rod lot easier to break in the drawing process, from the circle,[link widoczny dla zalogowanych], resulting in wire roll off from the tuner to make threading a longer lead time to ask, seriously affecting the rate of the effective operation of wire drawing machine; drive has not adjusted the parameters take the line speed to meet the design speed of only about 50; ② We currently selected wire drawing machine drawing for 90 late advanced equipment, PLC control, raw material instability caused by wire-drawing machine parameter adjustment frequently not conducive to efficient and stable production; ③ The surface pretreatment currently used on high-carbon steel wire pre-adaptation to be improved. (2) the above problems is unreasonable in equipment and technology improvements at the corresponding measures taken: ① surface treatment line. Duckbill-type line planes shift; emergency stop device reinforcement; over the line parts of the installation cable model; wire brush to replace the disk drive pulley; single head drawing machine installation of cover and so on. ② LZ2 a lO/6OO Straight wire drawing machine first stage of the installation of pressure line roller; wire drawing machine brake disc replacement; improved roller straightening device; mold box gland improvement; rejection can lead to improve the wheel; install the module to change communication ; word round off stand improvement. ③ box into the line of the mold height, direction and height reduction to make proper adjustments to ensure that the wire drawing process is not pulled in the flat, in good condition. ④ The straightening roller height, direction and amount of pressure to make necessary adjustments to ensure that it can effectively remove the residual stress after wire drawing. ⑤-by-disc measurements of wire diameter specifications to ensure the effective control of semi-finished products. By rectification, the later production (792.32rnlTl basically the process of semi-finished products to eliminate the occurrence of distortion of waste and achieved good results. Improved, largely determine the LZ2 a lO/6OO Straight wire drawing machine of the performance parameters, and adjusted the routes and with drawing die technology, to develop the West 1.85,2.72,3.2,3.8 mm4 specifications in the technological process for production of hot-dip galvanizing and wire test well the preparation. 7 Conclusion Steel Wire and Strand in the electric power and telecommunications industries in great demand,[link widoczny dla zalogowanych], the paper production process of wire drawing pilot study reached the following conclusions: (1) high line through the cold drawn wire rods Stubbs,[link widoczny dla zalogowanych], increased tensile strength and elongation decreased. (2) Roberts products are electrolytic alkaline cleaning,[link widoczny dla zalogowanych], hydrochloric acid,[link widoczny dla zalogowanych], ammonium chloride fluxing, and finally into the hot dip zinc pot, zinc dipped galvanized mild steel wire directly affect the performance of time , an elongation stress, tensile strength and torsional performance degradation, increased elongation, 1D winding improved. Through the process of drawing lines to detect and adjust the performance parameters of the wire during the test to test the performance analysis and production problems have been improved, allowing for the size of the mechanical properties and related parameters and other indicators to meet user requirements, product quality through the National Quality Supervision and Inspection Center of the certification. validate process routes are reasonable, feasible. References [1] Dai Baochang. important use of wire products of new technologies. Metallurgical Industry Press, 2001. (23 Kui Xu Min. wire coating and corrosion. Ministry of Metallurgical Metal Products Information Network, 1992. Received :2008 -03-10

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